From 34884282f7465aca016a3fa9a06618b9116cb8e1 Mon Sep 17 00:00:00 2001
From: Arnaud Delubac <arnaud.delubac@interactiu.cat>
Date: Wed, 18 Dec 2019 13:04:29 +0100
Subject: [PATCH 1/5] adding option to display pdf in dual mode and the
 isLandscape property

---
 .../barteksc/pdfviewer/DecodingAsyncTask.java |  4 +--
 .../github/barteksc/pdfviewer/PDFView.java    | 32 +++++++++++++++++++
 .../github/barteksc/pdfviewer/PdfFile.java    | 10 ++++--
 .../pdfviewer/scroll/DefaultScrollHandle.java |  6 +++-
 .../pdfviewer/util/PageSizeCalculator.java    | 12 +++++--
 .../barteksc/sample/PDFViewActivity.java      | 20 ++++++++++--
 6 files changed, 75 insertions(+), 9 deletions(-)

diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
index 24292ac9..6e5cdb8d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
@@ -52,8 +52,8 @@ protected Throwable doInBackground(Void... params) {
             if (pdfView != null) {
                 PdfDocument pdfDocument = docSource.createDocument(pdfView.getContext(), pdfiumCore, password);
                 pdfFile = new PdfFile(pdfiumCore, pdfDocument, pdfView.getPageFitPolicy(), getViewSize(pdfView),
-                        userPages, pdfView.isSwipeVertical(), pdfView.getSpacingPx(), pdfView.isAutoSpacingEnabled(),
-                        pdfView.isFitEachPage());
+                        userPages, pdfView.isOnDualPageMode(),  pdfView.isSwipeVertical(), pdfView.getSpacingPx(), pdfView.isAutoSpacingEnabled(),
+                        pdfView.isFitEachPage(), pdfView.isOnLandscapeOrientation());
                 return null;
             } else {
                 return new NullPointerException("pdfView == null");
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
index b8374721..4bb2938f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
@@ -176,6 +176,10 @@ enum ScrollDir {
 
     private int defaultPage = 0;
 
+    private boolean dualPageMode = false;
+
+    private boolean isLandscapeOrientation = false;
+
     /** True if should scroll through pages vertically instead of horizontally */
     private boolean swipeVertical = true;
 
@@ -1179,6 +1183,18 @@ public boolean isBestQuality() {
         return bestQuality;
     }
 
+    public boolean isOnDualPageMode() {
+        return dualPageMode;
+    }
+
+    public boolean isOnLandscapeOrientation() { return isLandscapeOrientation; }
+
+    public void setLandscapeOrientation(boolean landscapeOrientation) {this.isLandscapeOrientation = landscapeOrientation; }
+
+    public void setDualPageMode(boolean dualPageMode) {
+        this.dualPageMode = dualPageMode;
+    }
+
     public boolean isSwipeVertical() {
         return swipeVertical;
     }
@@ -1353,6 +1369,10 @@ public class Configurator {
 
         private int defaultPage = 0;
 
+        private boolean landscapeOrientation = false;
+
+        private boolean dualPageMode = false;
+
         private boolean swipeHorizontal = false;
 
         private boolean annotationRendering = false;
@@ -1461,6 +1481,16 @@ public Configurator defaultPage(int defaultPage) {
             return this;
         }
 
+        public Configurator landscapeOrientation(boolean landscapeOrientation) {
+            this.landscapeOrientation = landscapeOrientation;
+            return this;
+        }
+
+        public Configurator dualPageMode(boolean dualPageMode) {
+            this.dualPageMode = dualPageMode;
+            return this;
+        }
+
         public Configurator swipeHorizontal(boolean swipeHorizontal) {
             this.swipeHorizontal = swipeHorizontal;
             return this;
@@ -1542,6 +1572,8 @@ public void load() {
             PDFView.this.setNightMode(nightMode);
             PDFView.this.enableDoubletap(enableDoubletap);
             PDFView.this.setDefaultPage(defaultPage);
+            PDFView.this.setLandscapeOrientation(landscapeOrientation);
+            PDFView.this.setDualPageMode(dualPageMode);
             PDFView.this.setSwipeVertical(!swipeHorizontal);
             PDFView.this.enableAnnotationRendering(annotationRendering);
             PDFView.this.setScrollHandle(scrollHandle);
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
index fdc104f2..3610bcbb 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
@@ -51,6 +51,8 @@ class PdfFile {
     private SizeF maxHeightPageSize = new SizeF(0, 0);
     /** Scaled page with maximum width */
     private SizeF maxWidthPageSize = new SizeF(0, 0);
+    /** True if dualPageMode is on*/
+    private boolean showTwoPages;
     /** True if scrolling is vertical, else it's horizontal */
     private boolean isVertical;
     /** Fixed spacing between pages in pixels */
@@ -69,6 +71,8 @@ class PdfFile {
      * else the largest page fits and other pages scale relatively
      */
     private final boolean fitEachPage;
+
+    private final boolean isLandscape;
     /**
      * The pages the user want to display in order
      * (ex: 0, 2, 2, 8, 8, 1, 1, 1)
@@ -76,7 +80,8 @@ class PdfFile {
     private int[] originalUserPages;
 
     PdfFile(PdfiumCore pdfiumCore, PdfDocument pdfDocument, FitPolicy pageFitPolicy, Size viewSize, int[] originalUserPages,
-            boolean isVertical, int spacing, boolean autoSpacing, boolean fitEachPage) {
+            boolean showTwoPages, boolean isVertical, int spacing, boolean autoSpacing, boolean fitEachPage, boolean isLandscape) {
+        this.showTwoPages = showTwoPages;
         this.pdfiumCore = pdfiumCore;
         this.pdfDocument = pdfDocument;
         this.pageFitPolicy = pageFitPolicy;
@@ -85,6 +90,7 @@ class PdfFile {
         this.spacingPx = spacing;
         this.autoSpacing = autoSpacing;
         this.fitEachPage = fitEachPage;
+        this.isLandscape = isLandscape;
         setup(viewSize);
     }
 
@@ -122,7 +128,7 @@ public void recalculatePageSizes(Size viewSize) {
         maxHeightPageSize = calculator.getOptimalMaxHeightPageSize();
 
         for (Size size : originalPageSizes) {
-            pageSizes.add(calculator.calculate(size));
+            pageSizes.add(calculator.calculate(size, showTwoPages, isLandscape));
         }
         if (autoSpacing) {
             prepareAutoSpacing(viewSize);
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
index 8195a540..42c1feab 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
@@ -149,7 +149,11 @@ private void calculateMiddle() {
             pos = getY();
             viewSize = getHeight();
             pdfViewSize = pdfView.getHeight();
-        } else {
+        } else if (pdfView.isOnDualPageMode()){
+            pos = getX();
+            viewSize = getWidth() / 2;
+            pdfViewSize = pdfView.getWidth() / 2;
+        } else  {
             pos = getX();
             viewSize = getWidth();
             pdfViewSize = pdfView.getWidth();
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
index 4d678c98..e7f35a3b 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
@@ -15,6 +15,9 @@
  */
 package com.github.barteksc.pdfviewer.util;
 
+import android.app.Activity;
+import android.util.Log;
+import android.content.pm.ActivityInfo;
 import com.shockwave.pdfium.util.Size;
 import com.shockwave.pdfium.util.SizeF;
 
@@ -40,11 +43,16 @@ public PageSizeCalculator(FitPolicy fitPolicy, Size originalMaxWidthPageSize, Si
         calculateMaxPages();
     }
 
-    public SizeF calculate(Size pageSize) {
+    public SizeF calculate(Size pageSize, boolean showTwoPages, boolean isLandscape) {
         if (pageSize.getWidth() <= 0 || pageSize.getHeight() <= 0) {
             return new SizeF(0, 0);
         }
-        float maxWidth = fitEachPage ? viewSize.getWidth() : pageSize.getWidth() * widthRatio;
+        float maxWidth = 0;
+        if(showTwoPages && !isLandscape){
+           maxWidth = fitEachPage ? viewSize.getWidth()  : pageSize.getWidth() / 2 * widthRatio;
+        } else {
+            maxWidth = fitEachPage ? viewSize.getWidth() : pageSize.getWidth() * widthRatio;
+        }
         float maxHeight = fitEachPage ? viewSize.getHeight() : pageSize.getHeight() * heightRatio;
         switch (fitPolicy) {
             case HEIGHT:
diff --git a/sample/src/main/java/com/github/barteksc/sample/PDFViewActivity.java b/sample/src/main/java/com/github/barteksc/sample/PDFViewActivity.java
index d23b0008..a17da127 100755
--- a/sample/src/main/java/com/github/barteksc/sample/PDFViewActivity.java
+++ b/sample/src/main/java/com/github/barteksc/sample/PDFViewActivity.java
@@ -18,6 +18,7 @@
 import android.content.ActivityNotFoundException;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.content.res.Configuration;
 import android.database.Cursor;
 import android.graphics.Color;
 import android.net.Uri;
@@ -71,6 +72,8 @@ public class PDFViewActivity extends AppCompatActivity implements OnPageChangeLi
 
     String pdfFileName;
 
+
+
     @OptionsItem(R.id.pickFile)
     void pickFile() {
         int permissionCheck = ContextCompat.checkSelfPermission(this,
@@ -112,6 +115,9 @@ void afterViews() {
     }
 
     private void displayFromAsset(String assetFileName) {
+        boolean isLandscape = false;
+        int orientation = this.getResources().getConfiguration().orientation;
+        isLandscape = orientation == Configuration.ORIENTATION_LANDSCAPE;
         pdfFileName = assetFileName;
 
         pdfView.fromAsset(SAMPLE_FILE)
@@ -119,8 +125,14 @@ private void displayFromAsset(String assetFileName) {
                 .onPageChange(this)
                 .enableAnnotationRendering(true)
                 .onLoad(this)
+                .landscapeOrientation(isLandscape)
+                .dualPageMode(true)
                 .scrollHandle(new DefaultScrollHandle(this))
-                .spacing(10) // in dp
+                .spacing(0) // in dp
+                .enableSwipe(true)
+                .swipeHorizontal(true)
+                .pageFling(true)
+                .fitEachPage(false)
                 .onPageError(this)
                 .pageFitPolicy(FitPolicy.BOTH)
                 .load();
@@ -135,7 +147,11 @@ private void displayFromUri(Uri uri) {
                 .enableAnnotationRendering(true)
                 .onLoad(this)
                 .scrollHandle(new DefaultScrollHandle(this))
-                .spacing(10) // in dp
+                .spacing(0) // in dp
+                .dualPageMode(true)
+                .enableSwipe(true)
+                .swipeHorizontal(true)
+                .pageFling(true)
                 .onPageError(this)
                 .load();
     }

From 6f00b6d34e2fcd82781245f5c38ba9fd238e53a7 Mon Sep 17 00:00:00 2001
From: Arnaud Delubac <arnaud.delubac@interactiu.cat>
Date: Wed, 18 Dec 2019 13:31:16 +0100
Subject: [PATCH 2/5] nothng new

---
 .../java/com/github/barteksc/pdfviewer/AnimationManager.java    | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/CacheManager.java   | 2 +-
 .../java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java   | 2 +-
 .../java/com/github/barteksc/pdfviewer/DragPinchManager.java    | 2 +-
 .../src/main/java/com/github/barteksc/pdfviewer/PDFView.java    | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/PagesLoader.java    | 2 +-
 .../src/main/java/com/github/barteksc/pdfviewer/PdfFile.java    | 2 +-
 .../java/com/github/barteksc/pdfviewer/RenderingHandler.java    | 2 +-
 .../barteksc/pdfviewer/exception/FileNotFoundException.java     | 2 +-
 .../barteksc/pdfviewer/exception/PageRenderingException.java    | 2 +-
 .../com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java  | 2 +-
 .../java/com/github/barteksc/pdfviewer/link/LinkHandler.java    | 2 +-
 .../java/com/github/barteksc/pdfviewer/listener/Callbacks.java  | 2 +-
 .../com/github/barteksc/pdfviewer/listener/OnDrawListener.java  | 2 +-
 .../com/github/barteksc/pdfviewer/listener/OnErrorListener.java | 2 +-
 .../barteksc/pdfviewer/listener/OnLoadCompleteListener.java     | 2 +-
 .../github/barteksc/pdfviewer/listener/OnLongPressListener.java | 2 +-
 .../barteksc/pdfviewer/listener/OnPageChangeListener.java       | 2 +-
 .../github/barteksc/pdfviewer/listener/OnPageErrorListener.java | 2 +-
 .../barteksc/pdfviewer/listener/OnPageScrollListener.java       | 2 +-
 .../github/barteksc/pdfviewer/listener/OnRenderListener.java    | 2 +-
 .../com/github/barteksc/pdfviewer/listener/OnTapListener.java   | 2 +-
 .../java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java  | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/model/PagePart.java | 2 +-
 .../github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java   | 2 +-
 .../java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java | 2 +-
 .../java/com/github/barteksc/pdfviewer/source/AssetSource.java  | 2 +-
 .../com/github/barteksc/pdfviewer/source/ByteArraySource.java   | 2 +-
 .../com/github/barteksc/pdfviewer/source/DocumentSource.java    | 2 +-
 .../java/com/github/barteksc/pdfviewer/source/FileSource.java   | 2 +-
 .../com/github/barteksc/pdfviewer/source/InputStreamSource.java | 2 +-
 .../java/com/github/barteksc/pdfviewer/source/UriSource.java    | 2 +-
 .../java/com/github/barteksc/pdfviewer/util/ArrayUtils.java     | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/util/Constants.java | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/util/FileUtils.java | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/util/MathUtils.java | 2 +-
 .../com/github/barteksc/pdfviewer/util/PageSizeCalculator.java  | 2 +-
 .../main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java  | 2 +-
 .../src/main/java/com/github/barteksc/pdfviewer/util/Util.java  | 2 +-
 40 files changed, 40 insertions(+), 40 deletions(-)

diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
index e7e9439f..a7c6470d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
index 082ca3bf..66f8385f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.graphics.RectF;
 import android.support.annotation.Nullable;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
index 6e5cdb8d..1c9d58d6 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.os.AsyncTask;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
index 3860bc73..5ca5b77d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.graphics.PointF;
 import android.graphics.RectF;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
index 4bb2938f..5946100a 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.content.Context;
 import android.graphics.Bitmap;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
index 26c30f4b..70be2cc0 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.graphics.RectF;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
index 3610bcbb..01ce993f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.graphics.Bitmap;
 import android.graphics.Rect;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
index 22f55f4f..eb6fce44 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer;
+package android.lib.pdfviewer;
 
 import android.graphics.Bitmap;
 import android.graphics.Color;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
index f0fc6f80..db341137 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.exception;
+package android.lib.pdfviewer.exception;
 
 @Deprecated
 public class FileNotFoundException extends RuntimeException {
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
index b6ff2b89..fa459059 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
@@ -1,4 +1,4 @@
-package com.github.barteksc.pdfviewer.exception;
+package android.lib.pdfviewer.exception;
 
 public class PageRenderingException extends Exception {
     private final int page;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
index 0849da38..018b67ec 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.link;
+package android.lib.pdfviewer.link;
 
 import android.content.Context;
 import android.content.Intent;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
index f09dc11e..5ea3ba9e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.link;
+package android.lib.pdfviewer.link;
 
 import com.github.barteksc.pdfviewer.model.LinkTapEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
index 09becb1c..f0a97436 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
index cb9af8b3..189c05bf 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 import android.graphics.Canvas;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
index 876bacfc..45becf9d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 public interface OnErrorListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
index c319fc58..d5cd970f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 /**
  * Implement this interface to receive events from PDFView
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
index fc94c726..052f9703 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
index dfb758a5..4fd4432e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 /**
  * Implements this interface to receive events from PDFView
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
index 3fb38a2e..40a4de38 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 public interface OnPageErrorListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
index 6eda1fd1..521eba5c 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 /**
  * Implements this interface to receive events from PDFView
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
index 99982497..d3e209fe 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 public interface OnRenderListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
index 081a3a26..6adc13ed 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.listener;
+package android.lib.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
index 7e72bdd3..660b70e3 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.model;
+package android.lib.pdfviewer.model;
 
 import android.graphics.RectF;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
index 376d2ccd..e1d03c0b 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.model;
+package android.lib.pdfviewer.model;
 
 import android.graphics.Bitmap;
 import android.graphics.RectF;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
index 42c1feab..957adfc0 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
@@ -1,4 +1,4 @@
-package com.github.barteksc.pdfviewer.scroll;
+package android.lib.pdfviewer.scroll;
 
 import android.content.Context;
 import android.graphics.Color;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
index b58de5a4..8cf886c1 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
@@ -1,4 +1,4 @@
-package com.github.barteksc.pdfviewer.scroll;
+package android.lib.pdfviewer.scroll;
 
 import com.github.barteksc.pdfviewer.PDFView;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
index 3e24e204..e82c48c5 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 
 import android.content.Context;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
index 245c78fc..38a72984 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
index 4c76c5ab..2938d4f1 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
index cfe092c8..ea09e9fa 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 import android.content.Context;
 import android.os.ParcelFileDescriptor;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
index 26e60a8d..bdcae2f4 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
index 15215f0c..a4014f7b 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.source;
+package android.lib.pdfviewer.source;
 
 import android.content.Context;
 import android.net.Uri;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
index 1ff38398..a390dd9e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 import java.util.ArrayList;
 import java.util.List;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
index e03de0c3..79de4842 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 public class Constants {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
index 0aa325e9..0dc054e5 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
index 6e90dd55..21f0365f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 public enum FitPolicy {
     WIDTH, HEIGHT, BOTH
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
index 119ae8ce..dfcdcc71 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 public class MathUtils {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
index e7f35a3b..d8fbc712 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 import android.app.Activity;
 import android.util.Log;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
index e2e73ab7..b419a950 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 public enum SnapEdge {
     START, CENTER, END, NONE
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
index 58e473e0..0d8dff09 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package com.github.barteksc.pdfviewer.util;
+package android.lib.pdfviewer.util;
 
 import android.content.Context;
 import android.util.TypedValue;

From b35f7d4cce95578b984f2907fb9b0d8f9d29a479 Mon Sep 17 00:00:00 2001
From: Arnaud Delubac <arnaud.delubac@interactiu.cat>
Date: Wed, 18 Dec 2019 14:17:20 +0100
Subject: [PATCH 3/5] correcting package name

---
 .../barteksc/pdfviewer/AnimationManager.java  |  442 +--
 .../barteksc/pdfviewer/CacheManager.java      |  384 +-
 .../barteksc/pdfviewer/DecodingAsyncTask.java |    2 +-
 .../barteksc/pdfviewer/DragPinchManager.java  |  634 ++--
 .../github/barteksc/pdfviewer/PDFView.java    | 3190 ++++++++---------
 .../barteksc/pdfviewer/PagesLoader.java       |    2 +-
 .../github/barteksc/pdfviewer/PdfFile.java    |    2 +-
 .../barteksc/pdfviewer/RenderingHandler.java  |  322 +-
 .../exception/FileNotFoundException.java      |    2 +-
 .../exception/PageRenderingException.java     |    2 +-
 .../pdfviewer/link/DefaultLinkHandler.java    |    2 +-
 .../barteksc/pdfviewer/link/LinkHandler.java  |    2 +-
 .../pdfviewer/listener/Callbacks.java         |    2 +-
 .../pdfviewer/listener/OnDrawListener.java    |   76 +-
 .../pdfviewer/listener/OnErrorListener.java   |    2 +-
 .../listener/OnLoadCompleteListener.java      |   58 +-
 .../listener/OnLongPressListener.java         |    2 +-
 .../listener/OnPageChangeListener.java        |   64 +-
 .../listener/OnPageErrorListener.java         |    2 +-
 .../listener/OnPageScrollListener.java        |    2 +-
 .../pdfviewer/listener/OnRenderListener.java  |    2 +-
 .../pdfviewer/listener/OnTapListener.java     |    2 +-
 .../pdfviewer/model/LinkTapEvent.java         |    2 +-
 .../barteksc/pdfviewer/model/PagePart.java    |  160 +-
 .../pdfviewer/scroll/DefaultScrollHandle.java |    2 +-
 .../pdfviewer/scroll/ScrollHandle.java        |    2 +-
 .../pdfviewer/source/AssetSource.java         |    2 +-
 .../pdfviewer/source/ByteArraySource.java     |    2 +-
 .../pdfviewer/source/DocumentSource.java      |    2 +-
 .../barteksc/pdfviewer/source/FileSource.java |    2 +-
 .../pdfviewer/source/InputStreamSource.java   |    2 +-
 .../barteksc/pdfviewer/source/UriSource.java  |    2 +-
 .../barteksc/pdfviewer/util/ArrayUtils.java   |  148 +-
 .../barteksc/pdfviewer/util/Constants.java    |  102 +-
 .../barteksc/pdfviewer/util/FileUtils.java    |    2 +-
 .../barteksc/pdfviewer/util/FitPolicy.java    |    2 +-
 .../barteksc/pdfviewer/util/MathUtils.java    |  210 +-
 .../pdfviewer/util/PageSizeCalculator.java    |    2 +-
 .../barteksc/pdfviewer/util/SnapEdge.java     |    2 +-
 .../github/barteksc/pdfviewer/util/Util.java  |    2 +-
 40 files changed, 2923 insertions(+), 2923 deletions(-)

diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
index a7c6470d..89e813af 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/AnimationManager.java
@@ -1,221 +1,221 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer;
-
-import android.animation.Animator;
-import android.animation.Animator.AnimatorListener;
-import android.animation.AnimatorListenerAdapter;
-import android.animation.ValueAnimator;
-import android.animation.ValueAnimator.AnimatorUpdateListener;
-import android.graphics.PointF;
-import android.view.animation.DecelerateInterpolator;
-import android.widget.OverScroller;
-
-
-/**
- * This manager is used by the PDFView to launch animations.
- * It uses the ValueAnimator appeared in API 11 to start
- * an animation, and call moveTo() on the PDFView as a result
- * of each animation update.
- */
-class AnimationManager {
-
-    private PDFView pdfView;
-
-    private ValueAnimator animation;
-
-    private OverScroller scroller;
-
-    private boolean flinging = false;
-
-    private boolean pageFlinging = false;
-
-    public AnimationManager(PDFView pdfView) {
-        this.pdfView = pdfView;
-        scroller = new OverScroller(pdfView.getContext());
-    }
-
-    public void startXAnimation(float xFrom, float xTo) {
-        stopAll();
-        animation = ValueAnimator.ofFloat(xFrom, xTo);
-        XAnimation xAnimation = new XAnimation();
-        animation.setInterpolator(new DecelerateInterpolator());
-        animation.addUpdateListener(xAnimation);
-        animation.addListener(xAnimation);
-        animation.setDuration(400);
-        animation.start();
-    }
-
-    public void startYAnimation(float yFrom, float yTo) {
-        stopAll();
-        animation = ValueAnimator.ofFloat(yFrom, yTo);
-        YAnimation yAnimation = new YAnimation();
-        animation.setInterpolator(new DecelerateInterpolator());
-        animation.addUpdateListener(yAnimation);
-        animation.addListener(yAnimation);
-        animation.setDuration(400);
-        animation.start();
-    }
-
-    public void startZoomAnimation(float centerX, float centerY, float zoomFrom, float zoomTo) {
-        stopAll();
-        animation = ValueAnimator.ofFloat(zoomFrom, zoomTo);
-        animation.setInterpolator(new DecelerateInterpolator());
-        ZoomAnimation zoomAnim = new ZoomAnimation(centerX, centerY);
-        animation.addUpdateListener(zoomAnim);
-        animation.addListener(zoomAnim);
-        animation.setDuration(400);
-        animation.start();
-    }
-
-    public void startFlingAnimation(int startX, int startY, int velocityX, int velocityY, int minX, int maxX, int minY, int maxY) {
-        stopAll();
-        flinging = true;
-        scroller.fling(startX, startY, velocityX, velocityY, minX, maxX, minY, maxY);
-    }
-
-    public void startPageFlingAnimation(float targetOffset) {
-        if (pdfView.isSwipeVertical()) {
-            startYAnimation(pdfView.getCurrentYOffset(), targetOffset);
-        } else {
-            startXAnimation(pdfView.getCurrentXOffset(), targetOffset);
-        }
-        pageFlinging = true;
-    }
-
-    void computeFling() {
-        if (scroller.computeScrollOffset()) {
-            pdfView.moveTo(scroller.getCurrX(), scroller.getCurrY());
-            pdfView.loadPageByOffset();
-        } else if (flinging) { // fling finished
-            flinging = false;
-            pdfView.loadPages();
-            hideHandle();
-            pdfView.performPageSnap();
-        }
-    }
-
-    public void stopAll() {
-        if (animation != null) {
-            animation.cancel();
-            animation = null;
-        }
-        stopFling();
-    }
-
-    public void stopFling() {
-        flinging = false;
-        scroller.forceFinished(true);
-    }
-
-    public boolean isFlinging() {
-        return flinging || pageFlinging;
-    }
-
-    class XAnimation extends AnimatorListenerAdapter implements AnimatorUpdateListener {
-
-        @Override
-        public void onAnimationUpdate(ValueAnimator animation) {
-            float offset = (Float) animation.getAnimatedValue();
-            pdfView.moveTo(offset, pdfView.getCurrentYOffset());
-            pdfView.loadPageByOffset();
-        }
-
-        @Override
-        public void onAnimationCancel(Animator animation) {
-            pdfView.loadPages();
-            pageFlinging = false;
-            hideHandle();
-        }
-
-        @Override
-        public void onAnimationEnd(Animator animation) {
-            pdfView.loadPages();
-            pageFlinging = false;
-            hideHandle();
-        }
-    }
-
-    class YAnimation extends AnimatorListenerAdapter implements AnimatorUpdateListener {
-
-        @Override
-        public void onAnimationUpdate(ValueAnimator animation) {
-            float offset = (Float) animation.getAnimatedValue();
-            pdfView.moveTo(pdfView.getCurrentXOffset(), offset);
-            pdfView.loadPageByOffset();
-        }
-
-        @Override
-        public void onAnimationCancel(Animator animation) {
-            pdfView.loadPages();
-            pageFlinging = false;
-            hideHandle();
-        }
-
-        @Override
-        public void onAnimationEnd(Animator animation) {
-            pdfView.loadPages();
-            pageFlinging = false;
-            hideHandle();
-        }
-    }
-
-    class ZoomAnimation implements AnimatorUpdateListener, AnimatorListener {
-
-        private final float centerX;
-        private final float centerY;
-
-        public ZoomAnimation(float centerX, float centerY) {
-            this.centerX = centerX;
-            this.centerY = centerY;
-        }
-
-        @Override
-        public void onAnimationUpdate(ValueAnimator animation) {
-            float zoom = (Float) animation.getAnimatedValue();
-            pdfView.zoomCenteredTo(zoom, new PointF(centerX, centerY));
-        }
-
-        @Override
-        public void onAnimationCancel(Animator animation) {
-            pdfView.loadPages();
-            hideHandle();
-        }
-
-        @Override
-        public void onAnimationEnd(Animator animation) {
-            pdfView.loadPages();
-            pdfView.performPageSnap();
-            hideHandle();
-        }
-
-        @Override
-        public void onAnimationRepeat(Animator animation) {
-        }
-
-        @Override
-        public void onAnimationStart(Animator animation) {
-        }
-
-    }
-
-    private void hideHandle() {
-        if (pdfView.getScrollHandle() != null) {
-            pdfView.getScrollHandle().hideDelayed();
-        }
-    }
-
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer;
+
+import android.animation.Animator;
+import android.animation.Animator.AnimatorListener;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.graphics.PointF;
+import android.view.animation.DecelerateInterpolator;
+import android.widget.OverScroller;
+
+
+/**
+ * This manager is used by the PDFView to launch animations.
+ * It uses the ValueAnimator appeared in API 11 to start
+ * an animation, and call moveTo() on the PDFView as a result
+ * of each animation update.
+ */
+class AnimationManager {
+
+    private PDFView pdfView;
+
+    private ValueAnimator animation;
+
+    private OverScroller scroller;
+
+    private boolean flinging = false;
+
+    private boolean pageFlinging = false;
+
+    public AnimationManager(PDFView pdfView) {
+        this.pdfView = pdfView;
+        scroller = new OverScroller(pdfView.getContext());
+    }
+
+    public void startXAnimation(float xFrom, float xTo) {
+        stopAll();
+        animation = ValueAnimator.ofFloat(xFrom, xTo);
+        XAnimation xAnimation = new XAnimation();
+        animation.setInterpolator(new DecelerateInterpolator());
+        animation.addUpdateListener(xAnimation);
+        animation.addListener(xAnimation);
+        animation.setDuration(400);
+        animation.start();
+    }
+
+    public void startYAnimation(float yFrom, float yTo) {
+        stopAll();
+        animation = ValueAnimator.ofFloat(yFrom, yTo);
+        YAnimation yAnimation = new YAnimation();
+        animation.setInterpolator(new DecelerateInterpolator());
+        animation.addUpdateListener(yAnimation);
+        animation.addListener(yAnimation);
+        animation.setDuration(400);
+        animation.start();
+    }
+
+    public void startZoomAnimation(float centerX, float centerY, float zoomFrom, float zoomTo) {
+        stopAll();
+        animation = ValueAnimator.ofFloat(zoomFrom, zoomTo);
+        animation.setInterpolator(new DecelerateInterpolator());
+        ZoomAnimation zoomAnim = new ZoomAnimation(centerX, centerY);
+        animation.addUpdateListener(zoomAnim);
+        animation.addListener(zoomAnim);
+        animation.setDuration(400);
+        animation.start();
+    }
+
+    public void startFlingAnimation(int startX, int startY, int velocityX, int velocityY, int minX, int maxX, int minY, int maxY) {
+        stopAll();
+        flinging = true;
+        scroller.fling(startX, startY, velocityX, velocityY, minX, maxX, minY, maxY);
+    }
+
+    public void startPageFlingAnimation(float targetOffset) {
+        if (pdfView.isSwipeVertical()) {
+            startYAnimation(pdfView.getCurrentYOffset(), targetOffset);
+        } else {
+            startXAnimation(pdfView.getCurrentXOffset(), targetOffset);
+        }
+        pageFlinging = true;
+    }
+
+    void computeFling() {
+        if (scroller.computeScrollOffset()) {
+            pdfView.moveTo(scroller.getCurrX(), scroller.getCurrY());
+            pdfView.loadPageByOffset();
+        } else if (flinging) { // fling finished
+            flinging = false;
+            pdfView.loadPages();
+            hideHandle();
+            pdfView.performPageSnap();
+        }
+    }
+
+    public void stopAll() {
+        if (animation != null) {
+            animation.cancel();
+            animation = null;
+        }
+        stopFling();
+    }
+
+    public void stopFling() {
+        flinging = false;
+        scroller.forceFinished(true);
+    }
+
+    public boolean isFlinging() {
+        return flinging || pageFlinging;
+    }
+
+    class XAnimation extends AnimatorListenerAdapter implements AnimatorUpdateListener {
+
+        @Override
+        public void onAnimationUpdate(ValueAnimator animation) {
+            float offset = (Float) animation.getAnimatedValue();
+            pdfView.moveTo(offset, pdfView.getCurrentYOffset());
+            pdfView.loadPageByOffset();
+        }
+
+        @Override
+        public void onAnimationCancel(Animator animation) {
+            pdfView.loadPages();
+            pageFlinging = false;
+            hideHandle();
+        }
+
+        @Override
+        public void onAnimationEnd(Animator animation) {
+            pdfView.loadPages();
+            pageFlinging = false;
+            hideHandle();
+        }
+    }
+
+    class YAnimation extends AnimatorListenerAdapter implements AnimatorUpdateListener {
+
+        @Override
+        public void onAnimationUpdate(ValueAnimator animation) {
+            float offset = (Float) animation.getAnimatedValue();
+            pdfView.moveTo(pdfView.getCurrentXOffset(), offset);
+            pdfView.loadPageByOffset();
+        }
+
+        @Override
+        public void onAnimationCancel(Animator animation) {
+            pdfView.loadPages();
+            pageFlinging = false;
+            hideHandle();
+        }
+
+        @Override
+        public void onAnimationEnd(Animator animation) {
+            pdfView.loadPages();
+            pageFlinging = false;
+            hideHandle();
+        }
+    }
+
+    class ZoomAnimation implements AnimatorUpdateListener, AnimatorListener {
+
+        private final float centerX;
+        private final float centerY;
+
+        public ZoomAnimation(float centerX, float centerY) {
+            this.centerX = centerX;
+            this.centerY = centerY;
+        }
+
+        @Override
+        public void onAnimationUpdate(ValueAnimator animation) {
+            float zoom = (Float) animation.getAnimatedValue();
+            pdfView.zoomCenteredTo(zoom, new PointF(centerX, centerY));
+        }
+
+        @Override
+        public void onAnimationCancel(Animator animation) {
+            pdfView.loadPages();
+            hideHandle();
+        }
+
+        @Override
+        public void onAnimationEnd(Animator animation) {
+            pdfView.loadPages();
+            pdfView.performPageSnap();
+            hideHandle();
+        }
+
+        @Override
+        public void onAnimationRepeat(Animator animation) {
+        }
+
+        @Override
+        public void onAnimationStart(Animator animation) {
+        }
+
+    }
+
+    private void hideHandle() {
+        if (pdfView.getScrollHandle() != null) {
+            pdfView.getScrollHandle().hideDelayed();
+        }
+    }
+
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
index 66f8385f..97e6914d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/CacheManager.java
@@ -1,192 +1,192 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer;
-
-import android.graphics.RectF;
-import android.support.annotation.Nullable;
-
-import com.github.barteksc.pdfviewer.model.PagePart;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Comparator;
-import java.util.List;
-import java.util.PriorityQueue;
-
-import static com.github.barteksc.pdfviewer.util.Constants.Cache.CACHE_SIZE;
-import static com.github.barteksc.pdfviewer.util.Constants.Cache.THUMBNAILS_CACHE_SIZE;
-
-class CacheManager {
-
-    private final PriorityQueue<PagePart> passiveCache;
-
-    private final PriorityQueue<PagePart> activeCache;
-
-    private final List<PagePart> thumbnails;
-
-    private final Object passiveActiveLock = new Object();
-
-    private final PagePartComparator orderComparator = new PagePartComparator();
-
-    public CacheManager() {
-        activeCache = new PriorityQueue<>(CACHE_SIZE, orderComparator);
-        passiveCache = new PriorityQueue<>(CACHE_SIZE, orderComparator);
-        thumbnails = new ArrayList<>();
-    }
-
-    public void cachePart(PagePart part) {
-        synchronized (passiveActiveLock) {
-            // If cache too big, remove and recycle
-            makeAFreeSpace();
-
-            // Then add part
-            activeCache.offer(part);
-        }
-    }
-
-    public void makeANewSet() {
-        synchronized (passiveActiveLock) {
-            passiveCache.addAll(activeCache);
-            activeCache.clear();
-        }
-    }
-
-    private void makeAFreeSpace() {
-        synchronized (passiveActiveLock) {
-            while ((activeCache.size() + passiveCache.size()) >= CACHE_SIZE &&
-                    !passiveCache.isEmpty()) {
-                PagePart part = passiveCache.poll();
-                part.getRenderedBitmap().recycle();
-            }
-
-            while ((activeCache.size() + passiveCache.size()) >= CACHE_SIZE &&
-                    !activeCache.isEmpty()) {
-                activeCache.poll().getRenderedBitmap().recycle();
-            }
-        }
-    }
-
-    public void cacheThumbnail(PagePart part) {
-        synchronized (thumbnails) {
-            // If cache too big, remove and recycle
-            while (thumbnails.size() >= THUMBNAILS_CACHE_SIZE) {
-                thumbnails.remove(0).getRenderedBitmap().recycle();
-            }
-
-            // Then add thumbnail
-            addWithoutDuplicates(thumbnails, part);
-        }
-
-    }
-
-    public boolean upPartIfContained(int page, RectF pageRelativeBounds, int toOrder) {
-        PagePart fakePart = new PagePart(page, null, pageRelativeBounds, false, 0);
-
-        PagePart found;
-        synchronized (passiveActiveLock) {
-            if ((found = find(passiveCache, fakePart)) != null) {
-                passiveCache.remove(found);
-                found.setCacheOrder(toOrder);
-                activeCache.offer(found);
-                return true;
-            }
-
-            return find(activeCache, fakePart) != null;
-        }
-    }
-
-    /**
-     * Return true if already contains the described PagePart
-     */
-    public boolean containsThumbnail(int page, RectF pageRelativeBounds) {
-        PagePart fakePart = new PagePart(page, null, pageRelativeBounds, true, 0);
-        synchronized (thumbnails) {
-            for (PagePart part : thumbnails) {
-                if (part.equals(fakePart)) {
-                    return true;
-                }
-            }
-            return false;
-        }
-    }
-
-    /**
-     * Add part if it doesn't exist, recycle bitmap otherwise
-     */
-    private void addWithoutDuplicates(Collection<PagePart> collection, PagePart newPart) {
-        for (PagePart part : collection) {
-            if (part.equals(newPart)) {
-                newPart.getRenderedBitmap().recycle();
-                return;
-            }
-        }
-        collection.add(newPart);
-    }
-
-    @Nullable
-    private static PagePart find(PriorityQueue<PagePart> vector, PagePart fakePart) {
-        for (PagePart part : vector) {
-            if (part.equals(fakePart)) {
-                return part;
-            }
-        }
-        return null;
-    }
-
-    public List<PagePart> getPageParts() {
-        synchronized (passiveActiveLock) {
-            List<PagePart> parts = new ArrayList<>(passiveCache);
-            parts.addAll(activeCache);
-            return parts;
-        }
-    }
-
-    public List<PagePart> getThumbnails() {
-        synchronized (thumbnails) {
-            return thumbnails;
-        }
-    }
-
-    public void recycle() {
-        synchronized (passiveActiveLock) {
-            for (PagePart part : passiveCache) {
-                part.getRenderedBitmap().recycle();
-            }
-            passiveCache.clear();
-            for (PagePart part : activeCache) {
-                part.getRenderedBitmap().recycle();
-            }
-            activeCache.clear();
-        }
-        synchronized (thumbnails) {
-            for (PagePart part : thumbnails) {
-                part.getRenderedBitmap().recycle();
-            }
-            thumbnails.clear();
-        }
-    }
-
-    class PagePartComparator implements Comparator<PagePart> {
-        @Override
-        public int compare(PagePart part1, PagePart part2) {
-            if (part1.getCacheOrder() == part2.getCacheOrder()) {
-                return 0;
-            }
-            return part1.getCacheOrder() > part2.getCacheOrder() ? 1 : -1;
-        }
-    }
-
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer;
+
+import android.graphics.RectF;
+import android.support.annotation.Nullable;
+
+import com.github.barteksc.pdfviewer.model.PagePart;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Comparator;
+import java.util.List;
+import java.util.PriorityQueue;
+
+import static com.github.barteksc.pdfviewer.util.Constants.Cache.CACHE_SIZE;
+import static com.github.barteksc.pdfviewer.util.Constants.Cache.THUMBNAILS_CACHE_SIZE;
+
+class CacheManager {
+
+    private final PriorityQueue<PagePart> passiveCache;
+
+    private final PriorityQueue<PagePart> activeCache;
+
+    private final List<PagePart> thumbnails;
+
+    private final Object passiveActiveLock = new Object();
+
+    private final PagePartComparator orderComparator = new PagePartComparator();
+
+    public CacheManager() {
+        activeCache = new PriorityQueue<>(CACHE_SIZE, orderComparator);
+        passiveCache = new PriorityQueue<>(CACHE_SIZE, orderComparator);
+        thumbnails = new ArrayList<>();
+    }
+
+    public void cachePart(PagePart part) {
+        synchronized (passiveActiveLock) {
+            // If cache too big, remove and recycle
+            makeAFreeSpace();
+
+            // Then add part
+            activeCache.offer(part);
+        }
+    }
+
+    public void makeANewSet() {
+        synchronized (passiveActiveLock) {
+            passiveCache.addAll(activeCache);
+            activeCache.clear();
+        }
+    }
+
+    private void makeAFreeSpace() {
+        synchronized (passiveActiveLock) {
+            while ((activeCache.size() + passiveCache.size()) >= CACHE_SIZE &&
+                    !passiveCache.isEmpty()) {
+                PagePart part = passiveCache.poll();
+                part.getRenderedBitmap().recycle();
+            }
+
+            while ((activeCache.size() + passiveCache.size()) >= CACHE_SIZE &&
+                    !activeCache.isEmpty()) {
+                activeCache.poll().getRenderedBitmap().recycle();
+            }
+        }
+    }
+
+    public void cacheThumbnail(PagePart part) {
+        synchronized (thumbnails) {
+            // If cache too big, remove and recycle
+            while (thumbnails.size() >= THUMBNAILS_CACHE_SIZE) {
+                thumbnails.remove(0).getRenderedBitmap().recycle();
+            }
+
+            // Then add thumbnail
+            addWithoutDuplicates(thumbnails, part);
+        }
+
+    }
+
+    public boolean upPartIfContained(int page, RectF pageRelativeBounds, int toOrder) {
+        PagePart fakePart = new PagePart(page, null, pageRelativeBounds, false, 0);
+
+        PagePart found;
+        synchronized (passiveActiveLock) {
+            if ((found = find(passiveCache, fakePart)) != null) {
+                passiveCache.remove(found);
+                found.setCacheOrder(toOrder);
+                activeCache.offer(found);
+                return true;
+            }
+
+            return find(activeCache, fakePart) != null;
+        }
+    }
+
+    /**
+     * Return true if already contains the described PagePart
+     */
+    public boolean containsThumbnail(int page, RectF pageRelativeBounds) {
+        PagePart fakePart = new PagePart(page, null, pageRelativeBounds, true, 0);
+        synchronized (thumbnails) {
+            for (PagePart part : thumbnails) {
+                if (part.equals(fakePart)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    /**
+     * Add part if it doesn't exist, recycle bitmap otherwise
+     */
+    private void addWithoutDuplicates(Collection<PagePart> collection, PagePart newPart) {
+        for (PagePart part : collection) {
+            if (part.equals(newPart)) {
+                newPart.getRenderedBitmap().recycle();
+                return;
+            }
+        }
+        collection.add(newPart);
+    }
+
+    @Nullable
+    private static PagePart find(PriorityQueue<PagePart> vector, PagePart fakePart) {
+        for (PagePart part : vector) {
+            if (part.equals(fakePart)) {
+                return part;
+            }
+        }
+        return null;
+    }
+
+    public List<PagePart> getPageParts() {
+        synchronized (passiveActiveLock) {
+            List<PagePart> parts = new ArrayList<>(passiveCache);
+            parts.addAll(activeCache);
+            return parts;
+        }
+    }
+
+    public List<PagePart> getThumbnails() {
+        synchronized (thumbnails) {
+            return thumbnails;
+        }
+    }
+
+    public void recycle() {
+        synchronized (passiveActiveLock) {
+            for (PagePart part : passiveCache) {
+                part.getRenderedBitmap().recycle();
+            }
+            passiveCache.clear();
+            for (PagePart part : activeCache) {
+                part.getRenderedBitmap().recycle();
+            }
+            activeCache.clear();
+        }
+        synchronized (thumbnails) {
+            for (PagePart part : thumbnails) {
+                part.getRenderedBitmap().recycle();
+            }
+            thumbnails.clear();
+        }
+    }
+
+    class PagePartComparator implements Comparator<PagePart> {
+        @Override
+        public int compare(PagePart part1, PagePart part2) {
+            if (part1.getCacheOrder() == part2.getCacheOrder()) {
+                return 0;
+            }
+            return part1.getCacheOrder() > part2.getCacheOrder() ? 1 : -1;
+        }
+    }
+
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
index 1c9d58d6..6e5cdb8d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DecodingAsyncTask.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer;
+package com.github.barteksc.pdfviewer;
 
 import android.os.AsyncTask;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
index 5ca5b77d..edca09f6 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java
@@ -1,317 +1,317 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer;
-
-import android.graphics.PointF;
-import android.graphics.RectF;
-import android.view.GestureDetector;
-import android.view.MotionEvent;
-import android.view.ScaleGestureDetector;
-import android.view.View;
-
-import com.github.barteksc.pdfviewer.model.LinkTapEvent;
-import com.github.barteksc.pdfviewer.scroll.ScrollHandle;
-import com.github.barteksc.pdfviewer.util.SnapEdge;
-import com.shockwave.pdfium.PdfDocument;
-import com.shockwave.pdfium.util.SizeF;
-
-import static com.github.barteksc.pdfviewer.util.Constants.Pinch.MAXIMUM_ZOOM;
-import static com.github.barteksc.pdfviewer.util.Constants.Pinch.MINIMUM_ZOOM;
-
-/**
- * This Manager takes care of moving the PDFView,
- * set its zoom track user actions.
- */
-class DragPinchManager implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, ScaleGestureDetector.OnScaleGestureListener, View.OnTouchListener {
-
-    private PDFView pdfView;
-    private AnimationManager animationManager;
-
-    private GestureDetector gestureDetector;
-    private ScaleGestureDetector scaleGestureDetector;
-
-    private boolean scrolling = false;
-    private boolean scaling = false;
-    private boolean enabled = false;
-
-    DragPinchManager(PDFView pdfView, AnimationManager animationManager) {
-        this.pdfView = pdfView;
-        this.animationManager = animationManager;
-        gestureDetector = new GestureDetector(pdfView.getContext(), this);
-        scaleGestureDetector = new ScaleGestureDetector(pdfView.getContext(), this);
-        pdfView.setOnTouchListener(this);
-    }
-
-    void enable() {
-        enabled = true;
-    }
-
-    void disable() {
-        enabled = false;
-    }
-
-    void disableLongpress(){
-        gestureDetector.setIsLongpressEnabled(false);
-    }
-
-    @Override
-    public boolean onSingleTapConfirmed(MotionEvent e) {
-        boolean onTapHandled = pdfView.callbacks.callOnTap(e);
-        boolean linkTapped = checkLinkTapped(e.getX(), e.getY());
-        if (!onTapHandled && !linkTapped) {
-            ScrollHandle ps = pdfView.getScrollHandle();
-            if (ps != null && !pdfView.documentFitsView()) {
-                if (!ps.shown()) {
-                    ps.show();
-                } else {
-                    ps.hide();
-                }
-            }
-        }
-        pdfView.performClick();
-        return true;
-    }
-
-    private boolean checkLinkTapped(float x, float y) {
-        PdfFile pdfFile = pdfView.pdfFile;
-        if (pdfFile == null) {
-            return false;
-        }
-        float mappedX = -pdfView.getCurrentXOffset() + x;
-        float mappedY = -pdfView.getCurrentYOffset() + y;
-        int page = pdfFile.getPageAtOffset(pdfView.isSwipeVertical() ? mappedY : mappedX, pdfView.getZoom());
-        SizeF pageSize = pdfFile.getScaledPageSize(page, pdfView.getZoom());
-        int pageX, pageY;
-        if (pdfView.isSwipeVertical()) {
-            pageX = (int) pdfFile.getSecondaryPageOffset(page, pdfView.getZoom());
-            pageY = (int) pdfFile.getPageOffset(page, pdfView.getZoom());
-        } else {
-            pageY = (int) pdfFile.getSecondaryPageOffset(page, pdfView.getZoom());
-            pageX = (int) pdfFile.getPageOffset(page, pdfView.getZoom());
-        }
-        for (PdfDocument.Link link : pdfFile.getPageLinks(page)) {
-            RectF mapped = pdfFile.mapRectToDevice(page, pageX, pageY, (int) pageSize.getWidth(),
-                    (int) pageSize.getHeight(), link.getBounds());
-            mapped.sort();
-            if (mapped.contains(mappedX, mappedY)) {
-                pdfView.callbacks.callLinkHandler(new LinkTapEvent(x, y, mappedX, mappedY, mapped, link));
-                return true;
-            }
-        }
-        return false;
-    }
-
-    private void startPageFling(MotionEvent downEvent, MotionEvent ev, float velocityX, float velocityY) {
-        if (!checkDoPageFling(velocityX, velocityY)) {
-            return;
-        }
-
-        int direction;
-        if (pdfView.isSwipeVertical()) {
-            direction = velocityY > 0 ? -1 : 1;
-        } else {
-            direction = velocityX > 0 ? -1 : 1;
-        }
-        // get the focused page during the down event to ensure only a single page is changed
-        float delta = pdfView.isSwipeVertical() ? ev.getY() - downEvent.getY() : ev.getX() - downEvent.getX();
-        float offsetX = pdfView.getCurrentXOffset() - delta * pdfView.getZoom();
-        float offsetY = pdfView.getCurrentYOffset() - delta * pdfView.getZoom();
-        int startingPage = pdfView.findFocusPage(offsetX, offsetY);
-        int targetPage = Math.max(0, Math.min(pdfView.getPageCount() - 1, startingPage + direction));
-
-        SnapEdge edge = pdfView.findSnapEdge(targetPage);
-        float offset = pdfView.snapOffsetForPage(targetPage, edge);
-        animationManager.startPageFlingAnimation(-offset);
-    }
-
-    @Override
-    public boolean onDoubleTap(MotionEvent e) {
-        if (!pdfView.isDoubletapEnabled()) {
-            return false;
-        }
-
-        if (pdfView.getZoom() < pdfView.getMidZoom()) {
-            pdfView.zoomWithAnimation(e.getX(), e.getY(), pdfView.getMidZoom());
-        } else if (pdfView.getZoom() < pdfView.getMaxZoom()) {
-            pdfView.zoomWithAnimation(e.getX(), e.getY(), pdfView.getMaxZoom());
-        } else {
-            pdfView.resetZoomWithAnimation();
-        }
-        return true;
-    }
-
-    @Override
-    public boolean onDoubleTapEvent(MotionEvent e) {
-        return false;
-    }
-
-    @Override
-    public boolean onDown(MotionEvent e) {
-        animationManager.stopFling();
-        return true;
-    }
-
-    @Override
-    public void onShowPress(MotionEvent e) {
-
-    }
-
-    @Override
-    public boolean onSingleTapUp(MotionEvent e) {
-        return false;
-    }
-
-    @Override
-    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
-        scrolling = true;
-        if (pdfView.isZooming() || pdfView.isSwipeEnabled()) {
-            pdfView.moveRelativeTo(-distanceX, -distanceY);
-        }
-        if (!scaling || pdfView.doRenderDuringScale()) {
-            pdfView.loadPageByOffset();
-        }
-        return true;
-    }
-
-    private void onScrollEnd(MotionEvent event) {
-        pdfView.loadPages();
-        hideHandle();
-        if (!animationManager.isFlinging()) {
-            pdfView.performPageSnap();
-        }
-    }
-
-    @Override
-    public void onLongPress(MotionEvent e) {
-        pdfView.callbacks.callOnLongPress(e);
-    }
-
-    @Override
-    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
-        if (!pdfView.isSwipeEnabled()) {
-            return false;
-        }
-        if (pdfView.isPageFlingEnabled()) {
-            if (pdfView.pageFillsScreen()) {
-                onBoundedFling(velocityX, velocityY);
-            } else {
-                startPageFling(e1, e2, velocityX, velocityY);
-            }
-            return true;
-        }
-
-        int xOffset = (int) pdfView.getCurrentXOffset();
-        int yOffset = (int) pdfView.getCurrentYOffset();
-
-        float minX, minY;
-        PdfFile pdfFile = pdfView.pdfFile;
-        if (pdfView.isSwipeVertical()) {
-            minX = -(pdfView.toCurrentScale(pdfFile.getMaxPageWidth()) - pdfView.getWidth());
-            minY = -(pdfFile.getDocLen(pdfView.getZoom()) - pdfView.getHeight());
-        } else {
-            minX = -(pdfFile.getDocLen(pdfView.getZoom()) - pdfView.getWidth());
-            minY = -(pdfView.toCurrentScale(pdfFile.getMaxPageHeight()) - pdfView.getHeight());
-        }
-
-        animationManager.startFlingAnimation(xOffset, yOffset, (int) (velocityX), (int) (velocityY),
-                (int) minX, 0, (int) minY, 0);
-        return true;
-    }
-
-    private void onBoundedFling(float velocityX, float velocityY) {
-        int xOffset = (int) pdfView.getCurrentXOffset();
-        int yOffset = (int) pdfView.getCurrentYOffset();
-
-        PdfFile pdfFile = pdfView.pdfFile;
-
-        float pageStart = -pdfFile.getPageOffset(pdfView.getCurrentPage(), pdfView.getZoom());
-        float pageEnd = pageStart - pdfFile.getPageLength(pdfView.getCurrentPage(), pdfView.getZoom());
-        float minX, minY, maxX, maxY;
-        if (pdfView.isSwipeVertical()) {
-            minX = -(pdfView.toCurrentScale(pdfFile.getMaxPageWidth()) - pdfView.getWidth());
-            minY = pageEnd + pdfView.getHeight();
-            maxX = 0;
-            maxY = pageStart;
-        } else {
-            minX = pageEnd + pdfView.getWidth();
-            minY = -(pdfView.toCurrentScale(pdfFile.getMaxPageHeight()) - pdfView.getHeight());
-            maxX = pageStart;
-            maxY = 0;
-        }
-
-        animationManager.startFlingAnimation(xOffset, yOffset, (int) (velocityX), (int) (velocityY),
-                (int) minX, (int) maxX, (int) minY, (int) maxY);
-    }
-
-    @Override
-    public boolean onScale(ScaleGestureDetector detector) {
-        float dr = detector.getScaleFactor();
-        float wantedZoom = pdfView.getZoom() * dr;
-        float minZoom = Math.min(MINIMUM_ZOOM, pdfView.getMinZoom());
-        float maxZoom = Math.min(MAXIMUM_ZOOM, pdfView.getMaxZoom());
-        if (wantedZoom < minZoom) {
-            dr = minZoom / pdfView.getZoom();
-        } else if (wantedZoom > maxZoom) {
-            dr = maxZoom / pdfView.getZoom();
-        }
-        pdfView.zoomCenteredRelativeTo(dr, new PointF(detector.getFocusX(), detector.getFocusY()));
-        return true;
-    }
-
-    @Override
-    public boolean onScaleBegin(ScaleGestureDetector detector) {
-        scaling = true;
-        return true;
-    }
-
-    @Override
-    public void onScaleEnd(ScaleGestureDetector detector) {
-        pdfView.loadPages();
-        hideHandle();
-        scaling = false;
-    }
-
-    @Override
-    public boolean onTouch(View v, MotionEvent event) {
-        if (!enabled) {
-            return false;
-        }
-
-        boolean retVal = scaleGestureDetector.onTouchEvent(event);
-        retVal = gestureDetector.onTouchEvent(event) || retVal;
-
-        if (event.getAction() == MotionEvent.ACTION_UP) {
-            if (scrolling) {
-                scrolling = false;
-                onScrollEnd(event);
-            }
-        }
-        return retVal;
-    }
-
-    private void hideHandle() {
-        ScrollHandle scrollHandle = pdfView.getScrollHandle();
-        if (scrollHandle != null && scrollHandle.shown()) {
-            scrollHandle.hideDelayed();
-        }
-    }
-
-    private boolean checkDoPageFling(float velocityX, float velocityY) {
-        float absX = Math.abs(velocityX);
-        float absY = Math.abs(velocityY);
-        return pdfView.isSwipeVertical() ? absY > absX : absX > absY;
-    }
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer;
+
+import android.graphics.PointF;
+import android.graphics.RectF;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+import android.view.ScaleGestureDetector;
+import android.view.View;
+
+import com.github.barteksc.pdfviewer.model.LinkTapEvent;
+import com.github.barteksc.pdfviewer.scroll.ScrollHandle;
+import com.github.barteksc.pdfviewer.util.SnapEdge;
+import com.shockwave.pdfium.PdfDocument;
+import com.shockwave.pdfium.util.SizeF;
+
+import static com.github.barteksc.pdfviewer.util.Constants.Pinch.MAXIMUM_ZOOM;
+import static com.github.barteksc.pdfviewer.util.Constants.Pinch.MINIMUM_ZOOM;
+
+/**
+ * This Manager takes care of moving the PDFView,
+ * set its zoom track user actions.
+ */
+class DragPinchManager implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener, ScaleGestureDetector.OnScaleGestureListener, View.OnTouchListener {
+
+    private PDFView pdfView;
+    private AnimationManager animationManager;
+
+    private GestureDetector gestureDetector;
+    private ScaleGestureDetector scaleGestureDetector;
+
+    private boolean scrolling = false;
+    private boolean scaling = false;
+    private boolean enabled = false;
+
+    DragPinchManager(PDFView pdfView, AnimationManager animationManager) {
+        this.pdfView = pdfView;
+        this.animationManager = animationManager;
+        gestureDetector = new GestureDetector(pdfView.getContext(), this);
+        scaleGestureDetector = new ScaleGestureDetector(pdfView.getContext(), this);
+        pdfView.setOnTouchListener(this);
+    }
+
+    void enable() {
+        enabled = true;
+    }
+
+    void disable() {
+        enabled = false;
+    }
+
+    void disableLongpress(){
+        gestureDetector.setIsLongpressEnabled(false);
+    }
+
+    @Override
+    public boolean onSingleTapConfirmed(MotionEvent e) {
+        boolean onTapHandled = pdfView.callbacks.callOnTap(e);
+        boolean linkTapped = checkLinkTapped(e.getX(), e.getY());
+        if (!onTapHandled && !linkTapped) {
+            ScrollHandle ps = pdfView.getScrollHandle();
+            if (ps != null && !pdfView.documentFitsView()) {
+                if (!ps.shown()) {
+                    ps.show();
+                } else {
+                    ps.hide();
+                }
+            }
+        }
+        pdfView.performClick();
+        return true;
+    }
+
+    private boolean checkLinkTapped(float x, float y) {
+        PdfFile pdfFile = pdfView.pdfFile;
+        if (pdfFile == null) {
+            return false;
+        }
+        float mappedX = -pdfView.getCurrentXOffset() + x;
+        float mappedY = -pdfView.getCurrentYOffset() + y;
+        int page = pdfFile.getPageAtOffset(pdfView.isSwipeVertical() ? mappedY : mappedX, pdfView.getZoom());
+        SizeF pageSize = pdfFile.getScaledPageSize(page, pdfView.getZoom());
+        int pageX, pageY;
+        if (pdfView.isSwipeVertical()) {
+            pageX = (int) pdfFile.getSecondaryPageOffset(page, pdfView.getZoom());
+            pageY = (int) pdfFile.getPageOffset(page, pdfView.getZoom());
+        } else {
+            pageY = (int) pdfFile.getSecondaryPageOffset(page, pdfView.getZoom());
+            pageX = (int) pdfFile.getPageOffset(page, pdfView.getZoom());
+        }
+        for (PdfDocument.Link link : pdfFile.getPageLinks(page)) {
+            RectF mapped = pdfFile.mapRectToDevice(page, pageX, pageY, (int) pageSize.getWidth(),
+                    (int) pageSize.getHeight(), link.getBounds());
+            mapped.sort();
+            if (mapped.contains(mappedX, mappedY)) {
+                pdfView.callbacks.callLinkHandler(new LinkTapEvent(x, y, mappedX, mappedY, mapped, link));
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void startPageFling(MotionEvent downEvent, MotionEvent ev, float velocityX, float velocityY) {
+        if (!checkDoPageFling(velocityX, velocityY)) {
+            return;
+        }
+
+        int direction;
+        if (pdfView.isSwipeVertical()) {
+            direction = velocityY > 0 ? -1 : 1;
+        } else {
+            direction = velocityX > 0 ? -1 : 1;
+        }
+        // get the focused page during the down event to ensure only a single page is changed
+        float delta = pdfView.isSwipeVertical() ? ev.getY() - downEvent.getY() : ev.getX() - downEvent.getX();
+        float offsetX = pdfView.getCurrentXOffset() - delta * pdfView.getZoom();
+        float offsetY = pdfView.getCurrentYOffset() - delta * pdfView.getZoom();
+        int startingPage = pdfView.findFocusPage(offsetX, offsetY);
+        int targetPage = Math.max(0, Math.min(pdfView.getPageCount() - 1, startingPage + direction));
+
+        SnapEdge edge = pdfView.findSnapEdge(targetPage);
+        float offset = pdfView.snapOffsetForPage(targetPage, edge);
+        animationManager.startPageFlingAnimation(-offset);
+    }
+
+    @Override
+    public boolean onDoubleTap(MotionEvent e) {
+        if (!pdfView.isDoubletapEnabled()) {
+            return false;
+        }
+
+        if (pdfView.getZoom() < pdfView.getMidZoom()) {
+            pdfView.zoomWithAnimation(e.getX(), e.getY(), pdfView.getMidZoom());
+        } else if (pdfView.getZoom() < pdfView.getMaxZoom()) {
+            pdfView.zoomWithAnimation(e.getX(), e.getY(), pdfView.getMaxZoom());
+        } else {
+            pdfView.resetZoomWithAnimation();
+        }
+        return true;
+    }
+
+    @Override
+    public boolean onDoubleTapEvent(MotionEvent e) {
+        return false;
+    }
+
+    @Override
+    public boolean onDown(MotionEvent e) {
+        animationManager.stopFling();
+        return true;
+    }
+
+    @Override
+    public void onShowPress(MotionEvent e) {
+
+    }
+
+    @Override
+    public boolean onSingleTapUp(MotionEvent e) {
+        return false;
+    }
+
+    @Override
+    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
+        scrolling = true;
+        if (pdfView.isZooming() || pdfView.isSwipeEnabled()) {
+            pdfView.moveRelativeTo(-distanceX, -distanceY);
+        }
+        if (!scaling || pdfView.doRenderDuringScale()) {
+            pdfView.loadPageByOffset();
+        }
+        return true;
+    }
+
+    private void onScrollEnd(MotionEvent event) {
+        pdfView.loadPages();
+        hideHandle();
+        if (!animationManager.isFlinging()) {
+            pdfView.performPageSnap();
+        }
+    }
+
+    @Override
+    public void onLongPress(MotionEvent e) {
+        pdfView.callbacks.callOnLongPress(e);
+    }
+
+    @Override
+    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+        if (!pdfView.isSwipeEnabled()) {
+            return false;
+        }
+        if (pdfView.isPageFlingEnabled()) {
+            if (pdfView.pageFillsScreen()) {
+                onBoundedFling(velocityX, velocityY);
+            } else {
+                startPageFling(e1, e2, velocityX, velocityY);
+            }
+            return true;
+        }
+
+        int xOffset = (int) pdfView.getCurrentXOffset();
+        int yOffset = (int) pdfView.getCurrentYOffset();
+
+        float minX, minY;
+        PdfFile pdfFile = pdfView.pdfFile;
+        if (pdfView.isSwipeVertical()) {
+            minX = -(pdfView.toCurrentScale(pdfFile.getMaxPageWidth()) - pdfView.getWidth());
+            minY = -(pdfFile.getDocLen(pdfView.getZoom()) - pdfView.getHeight());
+        } else {
+            minX = -(pdfFile.getDocLen(pdfView.getZoom()) - pdfView.getWidth());
+            minY = -(pdfView.toCurrentScale(pdfFile.getMaxPageHeight()) - pdfView.getHeight());
+        }
+
+        animationManager.startFlingAnimation(xOffset, yOffset, (int) (velocityX), (int) (velocityY),
+                (int) minX, 0, (int) minY, 0);
+        return true;
+    }
+
+    private void onBoundedFling(float velocityX, float velocityY) {
+        int xOffset = (int) pdfView.getCurrentXOffset();
+        int yOffset = (int) pdfView.getCurrentYOffset();
+
+        PdfFile pdfFile = pdfView.pdfFile;
+
+        float pageStart = -pdfFile.getPageOffset(pdfView.getCurrentPage(), pdfView.getZoom());
+        float pageEnd = pageStart - pdfFile.getPageLength(pdfView.getCurrentPage(), pdfView.getZoom());
+        float minX, minY, maxX, maxY;
+        if (pdfView.isSwipeVertical()) {
+            minX = -(pdfView.toCurrentScale(pdfFile.getMaxPageWidth()) - pdfView.getWidth());
+            minY = pageEnd + pdfView.getHeight();
+            maxX = 0;
+            maxY = pageStart;
+        } else {
+            minX = pageEnd + pdfView.getWidth();
+            minY = -(pdfView.toCurrentScale(pdfFile.getMaxPageHeight()) - pdfView.getHeight());
+            maxX = pageStart;
+            maxY = 0;
+        }
+
+        animationManager.startFlingAnimation(xOffset, yOffset, (int) (velocityX), (int) (velocityY),
+                (int) minX, (int) maxX, (int) minY, (int) maxY);
+    }
+
+    @Override
+    public boolean onScale(ScaleGestureDetector detector) {
+        float dr = detector.getScaleFactor();
+        float wantedZoom = pdfView.getZoom() * dr;
+        float minZoom = Math.min(MINIMUM_ZOOM, pdfView.getMinZoom());
+        float maxZoom = Math.min(MAXIMUM_ZOOM, pdfView.getMaxZoom());
+        if (wantedZoom < minZoom) {
+            dr = minZoom / pdfView.getZoom();
+        } else if (wantedZoom > maxZoom) {
+            dr = maxZoom / pdfView.getZoom();
+        }
+        pdfView.zoomCenteredRelativeTo(dr, new PointF(detector.getFocusX(), detector.getFocusY()));
+        return true;
+    }
+
+    @Override
+    public boolean onScaleBegin(ScaleGestureDetector detector) {
+        scaling = true;
+        return true;
+    }
+
+    @Override
+    public void onScaleEnd(ScaleGestureDetector detector) {
+        pdfView.loadPages();
+        hideHandle();
+        scaling = false;
+    }
+
+    @Override
+    public boolean onTouch(View v, MotionEvent event) {
+        if (!enabled) {
+            return false;
+        }
+
+        boolean retVal = scaleGestureDetector.onTouchEvent(event);
+        retVal = gestureDetector.onTouchEvent(event) || retVal;
+
+        if (event.getAction() == MotionEvent.ACTION_UP) {
+            if (scrolling) {
+                scrolling = false;
+                onScrollEnd(event);
+            }
+        }
+        return retVal;
+    }
+
+    private void hideHandle() {
+        ScrollHandle scrollHandle = pdfView.getScrollHandle();
+        if (scrollHandle != null && scrollHandle.shown()) {
+            scrollHandle.hideDelayed();
+        }
+    }
+
+    private boolean checkDoPageFling(float velocityX, float velocityY) {
+        float absX = Math.abs(velocityX);
+        float absY = Math.abs(velocityY);
+        return pdfView.isSwipeVertical() ? absY > absX : absX > absY;
+    }
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
index 5946100a..8f37f7ea 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java
@@ -1,1595 +1,1595 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer;
-
-import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Color;
-import android.graphics.ColorMatrix;
-import android.graphics.ColorMatrixColorFilter;
-import android.graphics.Paint;
-import android.graphics.Paint.Style;
-import android.graphics.PaintFlagsDrawFilter;
-import android.graphics.PointF;
-import android.graphics.Rect;
-import android.graphics.RectF;
-import android.graphics.drawable.Drawable;
-import android.net.Uri;
-import android.os.AsyncTask;
-import android.os.Build;
-import android.os.HandlerThread;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.widget.RelativeLayout;
-
-import com.github.barteksc.pdfviewer.exception.PageRenderingException;
-import com.github.barteksc.pdfviewer.link.DefaultLinkHandler;
-import com.github.barteksc.pdfviewer.link.LinkHandler;
-import com.github.barteksc.pdfviewer.listener.Callbacks;
-import com.github.barteksc.pdfviewer.listener.OnDrawListener;
-import com.github.barteksc.pdfviewer.listener.OnErrorListener;
-import com.github.barteksc.pdfviewer.listener.OnLoadCompleteListener;
-import com.github.barteksc.pdfviewer.listener.OnLongPressListener;
-import com.github.barteksc.pdfviewer.listener.OnPageChangeListener;
-import com.github.barteksc.pdfviewer.listener.OnPageErrorListener;
-import com.github.barteksc.pdfviewer.listener.OnPageScrollListener;
-import com.github.barteksc.pdfviewer.listener.OnRenderListener;
-import com.github.barteksc.pdfviewer.listener.OnTapListener;
-import com.github.barteksc.pdfviewer.model.PagePart;
-import com.github.barteksc.pdfviewer.scroll.ScrollHandle;
-import com.github.barteksc.pdfviewer.source.AssetSource;
-import com.github.barteksc.pdfviewer.source.ByteArraySource;
-import com.github.barteksc.pdfviewer.source.DocumentSource;
-import com.github.barteksc.pdfviewer.source.FileSource;
-import com.github.barteksc.pdfviewer.source.InputStreamSource;
-import com.github.barteksc.pdfviewer.source.UriSource;
-import com.github.barteksc.pdfviewer.util.Constants;
-import com.github.barteksc.pdfviewer.util.FitPolicy;
-import com.github.barteksc.pdfviewer.util.MathUtils;
-import com.github.barteksc.pdfviewer.util.SnapEdge;
-import com.github.barteksc.pdfviewer.util.Util;
-import com.shockwave.pdfium.PdfDocument;
-import com.shockwave.pdfium.PdfiumCore;
-import com.shockwave.pdfium.util.Size;
-import com.shockwave.pdfium.util.SizeF;
-
-import java.io.File;
-import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-/**
- * It supports animations, zoom, cache, and swipe.
- * <p>
- * To fully understand this class you must know its principles :
- * - The PDF document is seen as if we always want to draw all the pages.
- * - The thing is that we only draw the visible parts.
- * - All parts are the same size, this is because we can't interrupt a native page rendering,
- * so we need these renderings to be as fast as possible, and be able to interrupt them
- * as soon as we can.
- * - The parts are loaded when the current offset or the current zoom level changes
- * <p>
- * Important :
- * - DocumentPage = A page of the PDF document.
- * - UserPage = A page as defined by the user.
- * By default, they're the same. But the user can change the pages order
- * using {@link #load(DocumentSource, String, int[])}. In this
- * particular case, a userPage of 5 can refer to a documentPage of 17.
- */
-public class PDFView extends RelativeLayout {
-
-    private static final String TAG = PDFView.class.getSimpleName();
-
-    public static final float DEFAULT_MAX_SCALE = 3.0f;
-    public static final float DEFAULT_MID_SCALE = 1.75f;
-    public static final float DEFAULT_MIN_SCALE = 1.0f;
-
-    private float minZoom = DEFAULT_MIN_SCALE;
-    private float midZoom = DEFAULT_MID_SCALE;
-    private float maxZoom = DEFAULT_MAX_SCALE;
-
-    /**
-     * START - scrolling in first page direction
-     * END - scrolling in last page direction
-     * NONE - not scrolling
-     */
-    enum ScrollDir {
-        NONE, START, END
-    }
-
-    private ScrollDir scrollDir = ScrollDir.NONE;
-
-    /** Rendered parts go to the cache manager */
-    CacheManager cacheManager;
-
-    /** Animation manager manage all offset and zoom animation */
-    private AnimationManager animationManager;
-
-    /** Drag manager manage all touch events */
-    private DragPinchManager dragPinchManager;
-
-    PdfFile pdfFile;
-
-    /** The index of the current sequence */
-    private int currentPage;
-
-    /**
-     * If you picture all the pages side by side in their optimal width,
-     * and taking into account the zoom level, the current offset is the
-     * position of the left border of the screen in this big picture
-     */
-    private float currentXOffset = 0;
-
-    /**
-     * If you picture all the pages side by side in their optimal width,
-     * and taking into account the zoom level, the current offset is the
-     * position of the left border of the screen in this big picture
-     */
-    private float currentYOffset = 0;
-
-    /** The zoom level, always >= 1 */
-    private float zoom = 1f;
-
-    /** True if the PDFView has been recycled */
-    private boolean recycled = true;
-
-    /** Current state of the view */
-    private State state = State.DEFAULT;
-
-    /** Async task used during the loading phase to decode a PDF document */
-    private DecodingAsyncTask decodingAsyncTask;
-
-    /** The thread {@link #renderingHandler} will run on */
-    private HandlerThread renderingHandlerThread;
-    /** Handler always waiting in the background and rendering tasks */
-    RenderingHandler renderingHandler;
-
-    private PagesLoader pagesLoader;
-
-    Callbacks callbacks = new Callbacks();
-
-    /** Paint object for drawing */
-    private Paint paint;
-
-    /** Paint object for drawing debug stuff */
-    private Paint debugPaint;
-
-    /** Policy for fitting pages to screen */
-    private FitPolicy pageFitPolicy = FitPolicy.WIDTH;
-
-    private boolean fitEachPage = false;
-
-    private int defaultPage = 0;
-
-    private boolean dualPageMode = false;
-
-    private boolean isLandscapeOrientation = false;
-
-    /** True if should scroll through pages vertically instead of horizontally */
-    private boolean swipeVertical = true;
-
-    private boolean enableSwipe = true;
-
-    private boolean doubletapEnabled = true;
-
-    private boolean nightMode = false;
-
-    private boolean pageSnap = true;
-
-    /** Pdfium core for loading and rendering PDFs */
-    private PdfiumCore pdfiumCore;
-
-    private ScrollHandle scrollHandle;
-
-    private boolean isScrollHandleInit = false;
-
-    ScrollHandle getScrollHandle() {
-        return scrollHandle;
-    }
-
-    /**
-     * True if bitmap should use ARGB_8888 format and take more memory
-     * False if bitmap should be compressed by using RGB_565 format and take less memory
-     */
-    private boolean bestQuality = false;
-
-    /**
-     * True if annotations should be rendered
-     * False otherwise
-     */
-    private boolean annotationRendering = false;
-
-    /**
-     * True if the view should render during scaling<br/>
-     * Can not be forced on older API versions (< Build.VERSION_CODES.KITKAT) as the GestureDetector does
-     * not detect scrolling while scaling.<br/>
-     * False otherwise
-     */
-    private boolean renderDuringScale = false;
-
-    /** Antialiasing and bitmap filtering */
-    private boolean enableAntialiasing = true;
-    private PaintFlagsDrawFilter antialiasFilter =
-            new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
-
-    /** Spacing between pages, in px */
-    private int spacingPx = 0;
-
-    /** Add dynamic spacing to fit each page separately on the screen. */
-    private boolean autoSpacing = false;
-
-    /** Fling a single page at a time */
-    private boolean pageFling = true;
-
-    /** Pages numbers used when calling onDrawAllListener */
-    private List<Integer> onDrawPagesNums = new ArrayList<>(10);
-
-    /** Holds info whether view has been added to layout and has width and height */
-    private boolean hasSize = false;
-
-    /** Holds last used Configurator that should be loaded when view has size */
-    private Configurator waitingDocumentConfigurator;
-
-    /** Construct the initial view */
-    public PDFView(Context context, AttributeSet set) {
-        super(context, set);
-
-        renderingHandlerThread = new HandlerThread("PDF renderer");
-
-        if (isInEditMode()) {
-            return;
-        }
-
-        cacheManager = new CacheManager();
-        animationManager = new AnimationManager(this);
-        dragPinchManager = new DragPinchManager(this, animationManager);
-        pagesLoader = new PagesLoader(this);
-
-        paint = new Paint();
-        debugPaint = new Paint();
-        debugPaint.setStyle(Style.STROKE);
-
-        pdfiumCore = new PdfiumCore(context);
-        setWillNotDraw(false);
-    }
-
-    private void load(DocumentSource docSource, String password) {
-        load(docSource, password, null);
-    }
-
-    private void load(DocumentSource docSource, String password, int[] userPages) {
-
-        if (!recycled) {
-            throw new IllegalStateException("Don't call load on a PDF View without recycling it first.");
-        }
-
-        recycled = false;
-        // Start decoding document
-        decodingAsyncTask = new DecodingAsyncTask(docSource, password, userPages, this, pdfiumCore);
-        decodingAsyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
-    }
-
-    /**
-     * Go to the given page.
-     *
-     * @param page Page index.
-     */
-    public void jumpTo(int page, boolean withAnimation) {
-        if (pdfFile == null) {
-            return;
-        }
-
-        page = pdfFile.determineValidPageNumberFrom(page);
-        float offset = page == 0 ? 0 : -pdfFile.getPageOffset(page, zoom);
-        if (swipeVertical) {
-            if (withAnimation) {
-                animationManager.startYAnimation(currentYOffset, offset);
-            } else {
-                moveTo(currentXOffset, offset);
-            }
-        } else {
-            if (withAnimation) {
-                animationManager.startXAnimation(currentXOffset, offset);
-            } else {
-                moveTo(offset, currentYOffset);
-            }
-        }
-        showPage(page);
-    }
-
-    public void jumpTo(int page) {
-        jumpTo(page, false);
-    }
-
-    void showPage(int pageNb) {
-        if (recycled) {
-            return;
-        }
-
-        // Check the page number and makes the
-        // difference between UserPages and DocumentPages
-        pageNb = pdfFile.determineValidPageNumberFrom(pageNb);
-        currentPage = pageNb;
-
-        loadPages();
-
-        if (scrollHandle != null && !documentFitsView()) {
-            scrollHandle.setPageNum(currentPage + 1);
-        }
-
-        callbacks.callOnPageChange(currentPage, pdfFile.getPagesCount());
-    }
-
-    /**
-     * Get current position as ratio of document length to visible area.
-     * 0 means that document start is visible, 1 that document end is visible
-     *
-     * @return offset between 0 and 1
-     */
-    public float getPositionOffset() {
-        float offset;
-        if (swipeVertical) {
-            offset = -currentYOffset / (pdfFile.getDocLen(zoom) - getHeight());
-        } else {
-            offset = -currentXOffset / (pdfFile.getDocLen(zoom) - getWidth());
-        }
-        return MathUtils.limit(offset, 0, 1);
-    }
-
-    /**
-     * @param progress   must be between 0 and 1
-     * @param moveHandle whether to move scroll handle
-     * @see PDFView#getPositionOffset()
-     */
-    public void setPositionOffset(float progress, boolean moveHandle) {
-        if (swipeVertical) {
-            moveTo(currentXOffset, (-pdfFile.getDocLen(zoom) + getHeight()) * progress, moveHandle);
-        } else {
-            moveTo((-pdfFile.getDocLen(zoom) + getWidth()) * progress, currentYOffset, moveHandle);
-        }
-        loadPageByOffset();
-    }
-
-    public void setPositionOffset(float progress) {
-        setPositionOffset(progress, true);
-    }
-
-    public void stopFling() {
-        animationManager.stopFling();
-    }
-
-    public int getPageCount() {
-        if (pdfFile == null) {
-            return 0;
-        }
-        return pdfFile.getPagesCount();
-    }
-
-    public void setSwipeEnabled(boolean enableSwipe) {
-        this.enableSwipe = enableSwipe;
-    }
-
-    public void setNightMode(boolean nightMode) {
-        this.nightMode = nightMode;
-        if (nightMode) {
-            ColorMatrix colorMatrixInverted =
-                    new ColorMatrix(new float[]{
-                            -1, 0, 0, 0, 255,
-                            0, -1, 0, 0, 255,
-                            0, 0, -1, 0, 255,
-                            0, 0, 0, 1, 0});
-
-            ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrixInverted);
-            paint.setColorFilter(filter);
-        } else {
-            paint.setColorFilter(null);
-        }
-    }
-
-    void enableDoubletap(boolean enableDoubletap) {
-        this.doubletapEnabled = enableDoubletap;
-    }
-
-    boolean isDoubletapEnabled() {
-        return doubletapEnabled;
-    }
-
-    void onPageError(PageRenderingException ex) {
-        if (!callbacks.callOnPageError(ex.getPage(), ex.getCause())) {
-            Log.e(TAG, "Cannot open page " + ex.getPage(), ex.getCause());
-        }
-    }
-
-    public void recycle() {
-        waitingDocumentConfigurator = null;
-
-        animationManager.stopAll();
-        dragPinchManager.disable();
-
-        // Stop tasks
-        if (renderingHandler != null) {
-            renderingHandler.stop();
-            renderingHandler.removeMessages(RenderingHandler.MSG_RENDER_TASK);
-        }
-        if (decodingAsyncTask != null) {
-            decodingAsyncTask.cancel(true);
-        }
-
-        // Clear caches
-        cacheManager.recycle();
-
-        if (scrollHandle != null && isScrollHandleInit) {
-            scrollHandle.destroyLayout();
-        }
-
-        if (pdfFile != null) {
-            pdfFile.dispose();
-            pdfFile = null;
-        }
-
-        renderingHandler = null;
-        scrollHandle = null;
-        isScrollHandleInit = false;
-        currentXOffset = currentYOffset = 0;
-        zoom = 1f;
-        recycled = true;
-        callbacks = new Callbacks();
-        state = State.DEFAULT;
-    }
-
-    public boolean isRecycled() {
-        return recycled;
-    }
-
-    /** Handle fling animation */
-    @Override
-    public void computeScroll() {
-        super.computeScroll();
-        if (isInEditMode()) {
-            return;
-        }
-        animationManager.computeFling();
-    }
-
-    @Override
-    protected void onDetachedFromWindow() {
-        recycle();
-        if (renderingHandlerThread != null) {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
-                renderingHandlerThread.quitSafely();
-            } else {
-                renderingHandlerThread.quit();
-            }
-            renderingHandlerThread = null;
-        }
-        super.onDetachedFromWindow();
-    }
-
-    @Override
-    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
-        hasSize = true;
-        if (waitingDocumentConfigurator != null) {
-            waitingDocumentConfigurator.load();
-        }
-        if (isInEditMode() || state != State.SHOWN) {
-            return;
-        }
-
-        // calculates the position of the point which in the center of view relative to big strip
-        float centerPointInStripXOffset = -currentXOffset + oldw * 0.5f;
-        float centerPointInStripYOffset = -currentYOffset + oldh * 0.5f;
-
-        float relativeCenterPointInStripXOffset;
-        float relativeCenterPointInStripYOffset;
-
-        if (swipeVertical){
-            relativeCenterPointInStripXOffset = centerPointInStripXOffset / pdfFile.getMaxPageWidth();
-            relativeCenterPointInStripYOffset = centerPointInStripYOffset / pdfFile.getDocLen(zoom);
-        }else {
-            relativeCenterPointInStripXOffset = centerPointInStripXOffset / pdfFile.getDocLen(zoom);
-            relativeCenterPointInStripYOffset = centerPointInStripYOffset / pdfFile.getMaxPageHeight();
-        }
-
-        animationManager.stopAll();
-        pdfFile.recalculatePageSizes(new Size(w, h));
-
-        if (swipeVertical) {
-            currentXOffset = -relativeCenterPointInStripXOffset * pdfFile.getMaxPageWidth() + w * 0.5f;
-            currentYOffset = -relativeCenterPointInStripYOffset * pdfFile.getDocLen(zoom) + h * 0.5f ;
-        }else {
-            currentXOffset = -relativeCenterPointInStripXOffset * pdfFile.getDocLen(zoom) + w * 0.5f;
-            currentYOffset = -relativeCenterPointInStripYOffset * pdfFile.getMaxPageHeight() + h * 0.5f;
-        }
-        moveTo(currentXOffset,currentYOffset);
-        loadPageByOffset();
-    }
-
-    @Override
-    public boolean canScrollHorizontally(int direction) {
-        if (pdfFile == null) {
-            return true;
-        }
-
-        if (swipeVertical) {
-            if (direction < 0 && currentXOffset < 0) {
-                return true;
-            } else if (direction > 0 && currentXOffset + toCurrentScale(pdfFile.getMaxPageWidth()) > getWidth()) {
-                return true;
-            }
-        } else {
-            if (direction < 0 && currentXOffset < 0) {
-                return true;
-            } else if (direction > 0 && currentXOffset + pdfFile.getDocLen(zoom) > getWidth()) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    @Override
-    public boolean canScrollVertically(int direction) {
-        if (pdfFile == null) {
-            return true;
-        }
-
-        if (swipeVertical) {
-            if (direction < 0 && currentYOffset < 0) {
-                return true;
-            } else if (direction > 0 && currentYOffset + pdfFile.getDocLen(zoom) > getHeight()) {
-                return true;
-            }
-        } else {
-            if (direction < 0 && currentYOffset < 0) {
-                return true;
-            } else if (direction > 0 && currentYOffset + toCurrentScale(pdfFile.getMaxPageHeight()) > getHeight()) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    @Override
-    protected void onDraw(Canvas canvas) {
-        if (isInEditMode()) {
-            return;
-        }
-        // As I said in this class javadoc, we can think of this canvas as a huge
-        // strip on which we draw all the images. We actually only draw the rendered
-        // parts, of course, but we render them in the place they belong in this huge
-        // strip.
-
-        // That's where Canvas.translate(x, y) becomes very helpful.
-        // This is the situation :
-        //  _______________________________________________
-        // |   			 |					 			   |
-        // | the actual  |					The big strip  |
-        // |	canvas	 | 								   |
-        // |_____________|								   |
-        // |_______________________________________________|
-        //
-        // If the rendered part is on the bottom right corner of the strip
-        // we can draw it but we won't see it because the canvas is not big enough.
-
-        // But if we call translate(-X, -Y) on the canvas just before drawing the object :
-        //  _______________________________________________
-        // |   			  					  _____________|
-        // |   The big strip     			 |			   |
-        // |		    					 |	the actual |
-        // |								 |	canvas	   |
-        // |_________________________________|_____________|
-        //
-        // The object will be on the canvas.
-        // This technique is massively used in this method, and allows
-        // abstraction of the screen position when rendering the parts.
-
-        // Draws background
-
-        if (enableAntialiasing) {
-            canvas.setDrawFilter(antialiasFilter);
-        }
-
-        Drawable bg = getBackground();
-        if (bg == null) {
-            canvas.drawColor(nightMode ? Color.BLACK : Color.WHITE);
-        } else {
-            bg.draw(canvas);
-        }
-
-        if (recycled) {
-            return;
-        }
-
-        if (state != State.SHOWN) {
-            return;
-        }
-
-        // Moves the canvas before drawing any element
-        float currentXOffset = this.currentXOffset;
-        float currentYOffset = this.currentYOffset;
-        canvas.translate(currentXOffset, currentYOffset);
-
-        // Draws thumbnails
-        for (PagePart part : cacheManager.getThumbnails()) {
-            drawPart(canvas, part);
-
-        }
-
-        // Draws parts
-        for (PagePart part : cacheManager.getPageParts()) {
-            drawPart(canvas, part);
-            if (callbacks.getOnDrawAll() != null
-                    && !onDrawPagesNums.contains(part.getPage())) {
-                onDrawPagesNums.add(part.getPage());
-            }
-        }
-
-        for (Integer page : onDrawPagesNums) {
-            drawWithListener(canvas, page, callbacks.getOnDrawAll());
-        }
-        onDrawPagesNums.clear();
-
-        drawWithListener(canvas, currentPage, callbacks.getOnDraw());
-
-        // Restores the canvas position
-        canvas.translate(-currentXOffset, -currentYOffset);
-    }
-
-    private void drawWithListener(Canvas canvas, int page, OnDrawListener listener) {
-        if (listener != null) {
-            float translateX, translateY;
-            if (swipeVertical) {
-                translateX = 0;
-                translateY = pdfFile.getPageOffset(page, zoom);
-            } else {
-                translateY = 0;
-                translateX = pdfFile.getPageOffset(page, zoom);
-            }
-
-            canvas.translate(translateX, translateY);
-            SizeF size = pdfFile.getPageSize(page);
-            listener.onLayerDrawn(canvas,
-                    toCurrentScale(size.getWidth()),
-                    toCurrentScale(size.getHeight()),
-                    page);
-
-            canvas.translate(-translateX, -translateY);
-        }
-    }
-
-    /** Draw a given PagePart on the canvas */
-    private void drawPart(Canvas canvas, PagePart part) {
-        // Can seem strange, but avoid lot of calls
-        RectF pageRelativeBounds = part.getPageRelativeBounds();
-        Bitmap renderedBitmap = part.getRenderedBitmap();
-
-        if (renderedBitmap.isRecycled()) {
-            return;
-        }
-
-        // Move to the target page
-        float localTranslationX = 0;
-        float localTranslationY = 0;
-        SizeF size = pdfFile.getPageSize(part.getPage());
-
-        if (swipeVertical) {
-            localTranslationY = pdfFile.getPageOffset(part.getPage(), zoom);
-            float maxWidth = pdfFile.getMaxPageWidth();
-            localTranslationX = toCurrentScale(maxWidth - size.getWidth()) / 2;
-        } else {
-            localTranslationX = pdfFile.getPageOffset(part.getPage(), zoom);
-            float maxHeight = pdfFile.getMaxPageHeight();
-            localTranslationY = toCurrentScale(maxHeight - size.getHeight()) / 2;
-        }
-        canvas.translate(localTranslationX, localTranslationY);
-
-        Rect srcRect = new Rect(0, 0, renderedBitmap.getWidth(),
-                renderedBitmap.getHeight());
-
-        float offsetX = toCurrentScale(pageRelativeBounds.left * size.getWidth());
-        float offsetY = toCurrentScale(pageRelativeBounds.top * size.getHeight());
-        float width = toCurrentScale(pageRelativeBounds.width() * size.getWidth());
-        float height = toCurrentScale(pageRelativeBounds.height() * size.getHeight());
-
-        // If we use float values for this rectangle, there will be
-        // a possible gap between page parts, especially when
-        // the zoom level is high.
-        RectF dstRect = new RectF((int) offsetX, (int) offsetY,
-                (int) (offsetX + width),
-                (int) (offsetY + height));
-
-        // Check if bitmap is in the screen
-        float translationX = currentXOffset + localTranslationX;
-        float translationY = currentYOffset + localTranslationY;
-        if (translationX + dstRect.left >= getWidth() || translationX + dstRect.right <= 0 ||
-                translationY + dstRect.top >= getHeight() || translationY + dstRect.bottom <= 0) {
-            canvas.translate(-localTranslationX, -localTranslationY);
-            return;
-        }
-
-        canvas.drawBitmap(renderedBitmap, srcRect, dstRect, paint);
-
-        if (Constants.DEBUG_MODE) {
-            debugPaint.setColor(part.getPage() % 2 == 0 ? Color.RED : Color.BLUE);
-            canvas.drawRect(dstRect, debugPaint);
-        }
-
-        // Restore the canvas position
-        canvas.translate(-localTranslationX, -localTranslationY);
-
-    }
-
-    /**
-     * Load all the parts around the center of the screen,
-     * taking into account X and Y offsets, zoom level, and
-     * the current page displayed
-     */
-    public void loadPages() {
-        if (pdfFile == null || renderingHandler == null) {
-            return;
-        }
-
-        // Cancel all current tasks
-        renderingHandler.removeMessages(RenderingHandler.MSG_RENDER_TASK);
-        cacheManager.makeANewSet();
-
-        pagesLoader.loadPages();
-        redraw();
-    }
-
-    /** Called when the PDF is loaded */
-    void loadComplete(PdfFile pdfFile) {
-        state = State.LOADED;
-
-        this.pdfFile = pdfFile;
-
-        if (!renderingHandlerThread.isAlive()) {
-            renderingHandlerThread.start();
-        }
-        renderingHandler = new RenderingHandler(renderingHandlerThread.getLooper(), this);
-        renderingHandler.start();
-
-        if (scrollHandle != null) {
-            scrollHandle.setupLayout(this);
-            isScrollHandleInit = true;
-        }
-
-        dragPinchManager.enable();
-
-        callbacks.callOnLoadComplete(pdfFile.getPagesCount());
-
-        jumpTo(defaultPage, false);
-    }
-
-    void loadError(Throwable t) {
-        state = State.ERROR;
-        // store reference, because callbacks will be cleared in recycle() method
-        OnErrorListener onErrorListener = callbacks.getOnError();
-        recycle();
-        invalidate();
-        if (onErrorListener != null) {
-            onErrorListener.onError(t);
-        } else {
-            Log.e("PDFView", "load pdf error", t);
-        }
-    }
-
-    void redraw() {
-        invalidate();
-    }
-
-    /**
-     * Called when a rendering task is over and
-     * a PagePart has been freshly created.
-     *
-     * @param part The created PagePart.
-     */
-    public void onBitmapRendered(PagePart part) {
-        // when it is first rendered part
-        if (state == State.LOADED) {
-            state = State.SHOWN;
-            callbacks.callOnRender(pdfFile.getPagesCount());
-        }
-
-        if (part.isThumbnail()) {
-            cacheManager.cacheThumbnail(part);
-        } else {
-            cacheManager.cachePart(part);
-        }
-        redraw();
-    }
-
-    public void moveTo(float offsetX, float offsetY) {
-        moveTo(offsetX, offsetY, true);
-    }
-
-    /**
-     * Move to the given X and Y offsets, but check them ahead of time
-     * to be sure not to go outside the the big strip.
-     *
-     * @param offsetX    The big strip X offset to use as the left border of the screen.
-     * @param offsetY    The big strip Y offset to use as the right border of the screen.
-     * @param moveHandle whether to move scroll handle or not
-     */
-    public void moveTo(float offsetX, float offsetY, boolean moveHandle) {
-        if (swipeVertical) {
-            // Check X offset
-            float scaledPageWidth = toCurrentScale(pdfFile.getMaxPageWidth());
-            if (scaledPageWidth < getWidth()) {
-                offsetX = getWidth() / 2 - scaledPageWidth / 2;
-            } else {
-                if (offsetX > 0) {
-                    offsetX = 0;
-                } else if (offsetX + scaledPageWidth < getWidth()) {
-                    offsetX = getWidth() - scaledPageWidth;
-                }
-            }
-
-            // Check Y offset
-            float contentHeight = pdfFile.getDocLen(zoom);
-            if (contentHeight < getHeight()) { // whole document height visible on screen
-                offsetY = (getHeight() - contentHeight) / 2;
-            } else {
-                if (offsetY > 0) { // top visible
-                    offsetY = 0;
-                } else if (offsetY + contentHeight < getHeight()) { // bottom visible
-                    offsetY = -contentHeight + getHeight();
-                }
-            }
-
-            if (offsetY < currentYOffset) {
-                scrollDir = ScrollDir.END;
-            } else if (offsetY > currentYOffset) {
-                scrollDir = ScrollDir.START;
-            } else {
-                scrollDir = ScrollDir.NONE;
-            }
-        } else {
-            // Check Y offset
-            float scaledPageHeight = toCurrentScale(pdfFile.getMaxPageHeight());
-            if (scaledPageHeight < getHeight()) {
-                offsetY = getHeight() / 2 - scaledPageHeight / 2;
-            } else {
-                if (offsetY > 0) {
-                    offsetY = 0;
-                } else if (offsetY + scaledPageHeight < getHeight()) {
-                    offsetY = getHeight() - scaledPageHeight;
-                }
-            }
-
-            // Check X offset
-            float contentWidth = pdfFile.getDocLen(zoom);
-            if (contentWidth < getWidth()) { // whole document width visible on screen
-                offsetX = (getWidth() - contentWidth) / 2;
-            } else {
-                if (offsetX > 0) { // left visible
-                    offsetX = 0;
-                } else if (offsetX + contentWidth < getWidth()) { // right visible
-                    offsetX = -contentWidth + getWidth();
-                }
-            }
-
-            if (offsetX < currentXOffset) {
-                scrollDir = ScrollDir.END;
-            } else if (offsetX > currentXOffset) {
-                scrollDir = ScrollDir.START;
-            } else {
-                scrollDir = ScrollDir.NONE;
-            }
-        }
-
-        currentXOffset = offsetX;
-        currentYOffset = offsetY;
-        float positionOffset = getPositionOffset();
-
-        if (moveHandle && scrollHandle != null && !documentFitsView()) {
-            scrollHandle.setScroll(positionOffset);
-        }
-
-        callbacks.callOnPageScroll(getCurrentPage(), positionOffset);
-
-        redraw();
-    }
-
-    void loadPageByOffset() {
-        if (0 == pdfFile.getPagesCount()) {
-            return;
-        }
-
-        float offset, screenCenter;
-        if (swipeVertical) {
-            offset = currentYOffset;
-            screenCenter = ((float) getHeight()) / 2;
-        } else {
-            offset = currentXOffset;
-            screenCenter = ((float) getWidth()) / 2;
-        }
-
-        int page = pdfFile.getPageAtOffset(-(offset - screenCenter), zoom);
-
-        if (page >= 0 && page <= pdfFile.getPagesCount() - 1 && page != getCurrentPage()) {
-            showPage(page);
-        } else {
-            loadPages();
-        }
-    }
-
-    /**
-     * Animate to the nearest snapping position for the current SnapPolicy
-     */
-    public void performPageSnap() {
-        if (!pageSnap || pdfFile == null || pdfFile.getPagesCount() == 0) {
-            return;
-        }
-        int centerPage = findFocusPage(currentXOffset, currentYOffset);
-        SnapEdge edge = findSnapEdge(centerPage);
-        if (edge == SnapEdge.NONE) {
-            return;
-        }
-
-        float offset = snapOffsetForPage(centerPage, edge);
-        if (swipeVertical) {
-            animationManager.startYAnimation(currentYOffset, -offset);
-        } else {
-            animationManager.startXAnimation(currentXOffset, -offset);
-        }
-    }
-
-    /**
-     * Find the edge to snap to when showing the specified page
-     */
-    SnapEdge findSnapEdge(int page) {
-        if (!pageSnap || page < 0) {
-            return SnapEdge.NONE;
-        }
-        float currentOffset = swipeVertical ? currentYOffset : currentXOffset;
-        float offset = -pdfFile.getPageOffset(page, zoom);
-        int length = swipeVertical ? getHeight() : getWidth();
-        float pageLength = pdfFile.getPageLength(page, zoom);
-
-        if (length >= pageLength) {
-            return SnapEdge.CENTER;
-        } else if (currentOffset >= offset) {
-            return SnapEdge.START;
-        } else if (offset - pageLength > currentOffset - length) {
-            return SnapEdge.END;
-        } else {
-            return SnapEdge.NONE;
-        }
-    }
-
-    /**
-     * Get the offset to move to in order to snap to the page
-     */
-    float snapOffsetForPage(int pageIndex, SnapEdge edge) {
-        float offset = pdfFile.getPageOffset(pageIndex, zoom);
-
-        float length = swipeVertical ? getHeight() : getWidth();
-        float pageLength = pdfFile.getPageLength(pageIndex, zoom);
-
-        if (edge == SnapEdge.CENTER) {
-            offset = offset - length / 2f + pageLength / 2f;
-        } else if (edge == SnapEdge.END) {
-            offset = offset - length + pageLength;
-        }
-        return offset;
-    }
-
-    int findFocusPage(float xOffset, float yOffset) {
-        float currOffset = swipeVertical ? yOffset : xOffset;
-        float length = swipeVertical ? getHeight() : getWidth();
-        // make sure first and last page can be found
-        if (currOffset > -1) {
-            return 0;
-        } else if (currOffset < -pdfFile.getDocLen(zoom) + length + 1) {
-            return pdfFile.getPagesCount() - 1;
-        }
-        // else find page in center
-        float center = currOffset - length / 2f;
-        return pdfFile.getPageAtOffset(-center, zoom);
-    }
-
-    /**
-     * @return true if single page fills the entire screen in the scrolling direction
-     */
-    public boolean pageFillsScreen() {
-        float start = -pdfFile.getPageOffset(currentPage, zoom);
-        float end = start - pdfFile.getPageLength(currentPage, zoom);
-        if (isSwipeVertical()) {
-            return start > currentYOffset && end < currentYOffset - getHeight();
-        } else {
-            return start > currentXOffset && end < currentXOffset - getWidth();
-        }
-    }
-
-    /**
-     * Move relatively to the current position.
-     *
-     * @param dx The X difference you want to apply.
-     * @param dy The Y difference you want to apply.
-     * @see #moveTo(float, float)
-     */
-    public void moveRelativeTo(float dx, float dy) {
-        moveTo(currentXOffset + dx, currentYOffset + dy);
-    }
-
-    /**
-     * Change the zoom level
-     */
-    public void zoomTo(float zoom) {
-        this.zoom = zoom;
-    }
-
-    /**
-     * Change the zoom level, relatively to a pivot point.
-     * It will call moveTo() to make sure the given point stays
-     * in the middle of the screen.
-     *
-     * @param zoom  The zoom level.
-     * @param pivot The point on the screen that should stays.
-     */
-    public void zoomCenteredTo(float zoom, PointF pivot) {
-        float dzoom = zoom / this.zoom;
-        zoomTo(zoom);
-        float baseX = currentXOffset * dzoom;
-        float baseY = currentYOffset * dzoom;
-        baseX += (pivot.x - pivot.x * dzoom);
-        baseY += (pivot.y - pivot.y * dzoom);
-        moveTo(baseX, baseY);
-    }
-
-    /**
-     * @see #zoomCenteredTo(float, PointF)
-     */
-    public void zoomCenteredRelativeTo(float dzoom, PointF pivot) {
-        zoomCenteredTo(zoom * dzoom, pivot);
-    }
-
-    /**
-     * Checks if whole document can be displayed on screen, doesn't include zoom
-     *
-     * @return true if whole document can displayed at once, false otherwise
-     */
-    public boolean documentFitsView() {
-        float len = pdfFile.getDocLen(1);
-        if (swipeVertical) {
-            return len < getHeight();
-        } else {
-            return len < getWidth();
-        }
-    }
-
-    public void fitToWidth(int page) {
-        if (state != State.SHOWN) {
-            Log.e(TAG, "Cannot fit, document not rendered yet");
-            return;
-        }
-        zoomTo(getWidth() / pdfFile.getPageSize(page).getWidth());
-        jumpTo(page);
-    }
-
-    public SizeF getPageSize(int pageIndex) {
-        if (pdfFile == null) {
-            return new SizeF(0, 0);
-        }
-        return pdfFile.getPageSize(pageIndex);
-    }
-
-    public int getCurrentPage() {
-        return currentPage;
-    }
-
-    public float getCurrentXOffset() {
-        return currentXOffset;
-    }
-
-    public float getCurrentYOffset() {
-        return currentYOffset;
-    }
-
-    public float toRealScale(float size) {
-        return size / zoom;
-    }
-
-    public float toCurrentScale(float size) {
-        return size * zoom;
-    }
-
-    public float getZoom() {
-        return zoom;
-    }
-
-    public boolean isZooming() {
-        return zoom != minZoom;
-    }
-
-    private void setDefaultPage(int defaultPage) {
-        this.defaultPage = defaultPage;
-    }
-
-    public void resetZoom() {
-        zoomTo(minZoom);
-    }
-
-    public void resetZoomWithAnimation() {
-        zoomWithAnimation(minZoom);
-    }
-
-    public void zoomWithAnimation(float centerX, float centerY, float scale) {
-        animationManager.startZoomAnimation(centerX, centerY, zoom, scale);
-    }
-
-    public void zoomWithAnimation(float scale) {
-        animationManager.startZoomAnimation(getWidth() / 2, getHeight() / 2, zoom, scale);
-    }
-
-    private void setScrollHandle(ScrollHandle scrollHandle) {
-        this.scrollHandle = scrollHandle;
-    }
-
-    /**
-     * Get page number at given offset
-     *
-     * @param positionOffset scroll offset between 0 and 1
-     * @return page number at given offset, starting from 0
-     */
-    public int getPageAtPositionOffset(float positionOffset) {
-        return pdfFile.getPageAtOffset(pdfFile.getDocLen(zoom) * positionOffset, zoom);
-    }
-
-    public float getMinZoom() {
-        return minZoom;
-    }
-
-    public void setMinZoom(float minZoom) {
-        this.minZoom = minZoom;
-    }
-
-    public float getMidZoom() {
-        return midZoom;
-    }
-
-    public void setMidZoom(float midZoom) {
-        this.midZoom = midZoom;
-    }
-
-    public float getMaxZoom() {
-        return maxZoom;
-    }
-
-    public void setMaxZoom(float maxZoom) {
-        this.maxZoom = maxZoom;
-    }
-
-    public void useBestQuality(boolean bestQuality) {
-        this.bestQuality = bestQuality;
-    }
-
-    public boolean isBestQuality() {
-        return bestQuality;
-    }
-
-    public boolean isOnDualPageMode() {
-        return dualPageMode;
-    }
-
-    public boolean isOnLandscapeOrientation() { return isLandscapeOrientation; }
-
-    public void setLandscapeOrientation(boolean landscapeOrientation) {this.isLandscapeOrientation = landscapeOrientation; }
-
-    public void setDualPageMode(boolean dualPageMode) {
-        this.dualPageMode = dualPageMode;
-    }
-
-    public boolean isSwipeVertical() {
-        return swipeVertical;
-    }
-
-    public boolean isSwipeEnabled() {
-        return enableSwipe;
-    }
-
-    private void setSwipeVertical(boolean swipeVertical) {
-        this.swipeVertical = swipeVertical;
-    }
-
-    public void enableAnnotationRendering(boolean annotationRendering) {
-        this.annotationRendering = annotationRendering;
-    }
-
-    public boolean isAnnotationRendering() {
-        return annotationRendering;
-    }
-
-    public void enableRenderDuringScale(boolean renderDuringScale) {
-        this.renderDuringScale = renderDuringScale;
-    }
-
-    public boolean isAntialiasing() {
-        return enableAntialiasing;
-    }
-
-    public void enableAntialiasing(boolean enableAntialiasing) {
-        this.enableAntialiasing = enableAntialiasing;
-    }
-
-    public int getSpacingPx() {
-        return spacingPx;
-    }
-
-    public boolean isAutoSpacingEnabled() {
-        return autoSpacing;
-    }
-
-    public void setPageFling(boolean pageFling) {
-        this.pageFling = pageFling;
-    }
-
-    public boolean isPageFlingEnabled() {
-        return pageFling;
-    }
-
-    private void setSpacing(int spacingDp) {
-        this.spacingPx = Util.getDP(getContext(), spacingDp);
-    }
-
-    private void setAutoSpacing(boolean autoSpacing) {
-        this.autoSpacing = autoSpacing;
-    }
-
-    private void setPageFitPolicy(FitPolicy pageFitPolicy) {
-        this.pageFitPolicy = pageFitPolicy;
-    }
-
-    public FitPolicy getPageFitPolicy() {
-        return pageFitPolicy;
-    }
-
-    private void setFitEachPage(boolean fitEachPage) {
-        this.fitEachPage = fitEachPage;
-    }
-
-    public boolean isFitEachPage() {
-        return fitEachPage;
-    }
-
-    public boolean isPageSnap() {
-        return pageSnap;
-    }
-
-    public void setPageSnap(boolean pageSnap) {
-        this.pageSnap = pageSnap;
-    }
-
-    public boolean doRenderDuringScale() {
-        return renderDuringScale;
-    }
-
-    /** Returns null if document is not loaded */
-    public PdfDocument.Meta getDocumentMeta() {
-        if (pdfFile == null) {
-            return null;
-        }
-        return pdfFile.getMetaData();
-    }
-
-    /** Will be empty until document is loaded */
-    public List<PdfDocument.Bookmark> getTableOfContents() {
-        if (pdfFile == null) {
-            return Collections.emptyList();
-        }
-        return pdfFile.getBookmarks();
-    }
-
-    /** Will be empty until document is loaded */
-    public List<PdfDocument.Link> getLinks(int page) {
-        if (pdfFile == null) {
-            return Collections.emptyList();
-        }
-        return pdfFile.getPageLinks(page);
-    }
-
-    /** Use an asset file as the pdf source */
-    public Configurator fromAsset(String assetName) {
-        return new Configurator(new AssetSource(assetName));
-    }
-
-    /** Use a file as the pdf source */
-    public Configurator fromFile(File file) {
-        return new Configurator(new FileSource(file));
-    }
-
-    /** Use URI as the pdf source, for use with content providers */
-    public Configurator fromUri(Uri uri) {
-        return new Configurator(new UriSource(uri));
-    }
-
-    /** Use bytearray as the pdf source, documents is not saved */
-    public Configurator fromBytes(byte[] bytes) {
-        return new Configurator(new ByteArraySource(bytes));
-    }
-
-    /** Use stream as the pdf source. Stream will be written to bytearray, because native code does not support Java Streams */
-    public Configurator fromStream(InputStream stream) {
-        return new Configurator(new InputStreamSource(stream));
-    }
-
-    /** Use custom source as pdf source */
-    public Configurator fromSource(DocumentSource docSource) {
-        return new Configurator(docSource);
-    }
-
-    private enum State {DEFAULT, LOADED, SHOWN, ERROR}
-
-    public class Configurator {
-
-        private final DocumentSource documentSource;
-
-        private int[] pageNumbers = null;
-
-        private boolean enableSwipe = true;
-
-        private boolean enableDoubletap = true;
-
-        private OnDrawListener onDrawListener;
-
-        private OnDrawListener onDrawAllListener;
-
-        private OnLoadCompleteListener onLoadCompleteListener;
-
-        private OnErrorListener onErrorListener;
-
-        private OnPageChangeListener onPageChangeListener;
-
-        private OnPageScrollListener onPageScrollListener;
-
-        private OnRenderListener onRenderListener;
-
-        private OnTapListener onTapListener;
-
-        private OnLongPressListener onLongPressListener;
-
-        private OnPageErrorListener onPageErrorListener;
-
-        private LinkHandler linkHandler = new DefaultLinkHandler(PDFView.this);
-
-        private int defaultPage = 0;
-
-        private boolean landscapeOrientation = false;
-
-        private boolean dualPageMode = false;
-
-        private boolean swipeHorizontal = false;
-
-        private boolean annotationRendering = false;
-
-        private String password = null;
-
-        private ScrollHandle scrollHandle = null;
-
-        private boolean antialiasing = true;
-
-        private int spacing = 0;
-
-        private boolean autoSpacing = false;
-
-        private FitPolicy pageFitPolicy = FitPolicy.WIDTH;
-
-        private boolean fitEachPage = false;
-
-        private boolean pageFling = false;
-
-        private boolean pageSnap = false;
-
-        private boolean nightMode = false;
-
-        private Configurator(DocumentSource documentSource) {
-            this.documentSource = documentSource;
-        }
-
-        public Configurator pages(int... pageNumbers) {
-            this.pageNumbers = pageNumbers;
-            return this;
-        }
-
-        public Configurator enableSwipe(boolean enableSwipe) {
-            this.enableSwipe = enableSwipe;
-            return this;
-        }
-
-        public Configurator enableDoubletap(boolean enableDoubletap) {
-            this.enableDoubletap = enableDoubletap;
-            return this;
-        }
-
-        public Configurator enableAnnotationRendering(boolean annotationRendering) {
-            this.annotationRendering = annotationRendering;
-            return this;
-        }
-
-        public Configurator onDraw(OnDrawListener onDrawListener) {
-            this.onDrawListener = onDrawListener;
-            return this;
-        }
-
-        public Configurator onDrawAll(OnDrawListener onDrawAllListener) {
-            this.onDrawAllListener = onDrawAllListener;
-            return this;
-        }
-
-        public Configurator onLoad(OnLoadCompleteListener onLoadCompleteListener) {
-            this.onLoadCompleteListener = onLoadCompleteListener;
-            return this;
-        }
-
-        public Configurator onPageScroll(OnPageScrollListener onPageScrollListener) {
-            this.onPageScrollListener = onPageScrollListener;
-            return this;
-        }
-
-        public Configurator onError(OnErrorListener onErrorListener) {
-            this.onErrorListener = onErrorListener;
-            return this;
-        }
-
-        public Configurator onPageError(OnPageErrorListener onPageErrorListener) {
-            this.onPageErrorListener = onPageErrorListener;
-            return this;
-        }
-
-        public Configurator onPageChange(OnPageChangeListener onPageChangeListener) {
-            this.onPageChangeListener = onPageChangeListener;
-            return this;
-        }
-
-        public Configurator onRender(OnRenderListener onRenderListener) {
-            this.onRenderListener = onRenderListener;
-            return this;
-        }
-
-        public Configurator onTap(OnTapListener onTapListener) {
-            this.onTapListener = onTapListener;
-            return this;
-        }
-
-        public Configurator onLongPress(OnLongPressListener onLongPressListener) {
-            this.onLongPressListener = onLongPressListener;
-            return this;
-        }
-
-        public Configurator linkHandler(LinkHandler linkHandler) {
-            this.linkHandler = linkHandler;
-            return this;
-        }
-
-        public Configurator defaultPage(int defaultPage) {
-            this.defaultPage = defaultPage;
-            return this;
-        }
-
-        public Configurator landscapeOrientation(boolean landscapeOrientation) {
-            this.landscapeOrientation = landscapeOrientation;
-            return this;
-        }
-
-        public Configurator dualPageMode(boolean dualPageMode) {
-            this.dualPageMode = dualPageMode;
-            return this;
-        }
-
-        public Configurator swipeHorizontal(boolean swipeHorizontal) {
-            this.swipeHorizontal = swipeHorizontal;
-            return this;
-        }
-
-        public Configurator password(String password) {
-            this.password = password;
-            return this;
-        }
-
-        public Configurator scrollHandle(ScrollHandle scrollHandle) {
-            this.scrollHandle = scrollHandle;
-            return this;
-        }
-
-        public Configurator enableAntialiasing(boolean antialiasing) {
-            this.antialiasing = antialiasing;
-            return this;
-        }
-
-        public Configurator spacing(int spacing) {
-            this.spacing = spacing;
-            return this;
-        }
-
-        public Configurator autoSpacing(boolean autoSpacing) {
-            this.autoSpacing = autoSpacing;
-            return this;
-        }
-
-        public Configurator pageFitPolicy(FitPolicy pageFitPolicy) {
-            this.pageFitPolicy = pageFitPolicy;
-            return this;
-        }
-
-        public Configurator fitEachPage(boolean fitEachPage) {
-            this.fitEachPage = fitEachPage;
-            return this;
-        }
-
-        public Configurator pageSnap(boolean pageSnap) {
-            this.pageSnap = pageSnap;
-            return this;
-        }
-
-        public Configurator pageFling(boolean pageFling) {
-            this.pageFling = pageFling;
-            return this;
-        }
-
-        public Configurator nightMode(boolean nightMode) {
-            this.nightMode = nightMode;
-            return this;
-        }
-
-        public Configurator disableLongpress() {
-            PDFView.this.dragPinchManager.disableLongpress();
-            return this;
-        }
-
-        public void load() {
-            if (!hasSize) {
-                waitingDocumentConfigurator = this;
-                return;
-            }
-            PDFView.this.recycle();
-            PDFView.this.callbacks.setOnLoadComplete(onLoadCompleteListener);
-            PDFView.this.callbacks.setOnError(onErrorListener);
-            PDFView.this.callbacks.setOnDraw(onDrawListener);
-            PDFView.this.callbacks.setOnDrawAll(onDrawAllListener);
-            PDFView.this.callbacks.setOnPageChange(onPageChangeListener);
-            PDFView.this.callbacks.setOnPageScroll(onPageScrollListener);
-            PDFView.this.callbacks.setOnRender(onRenderListener);
-            PDFView.this.callbacks.setOnTap(onTapListener);
-            PDFView.this.callbacks.setOnLongPress(onLongPressListener);
-            PDFView.this.callbacks.setOnPageError(onPageErrorListener);
-            PDFView.this.callbacks.setLinkHandler(linkHandler);
-            PDFView.this.setSwipeEnabled(enableSwipe);
-            PDFView.this.setNightMode(nightMode);
-            PDFView.this.enableDoubletap(enableDoubletap);
-            PDFView.this.setDefaultPage(defaultPage);
-            PDFView.this.setLandscapeOrientation(landscapeOrientation);
-            PDFView.this.setDualPageMode(dualPageMode);
-            PDFView.this.setSwipeVertical(!swipeHorizontal);
-            PDFView.this.enableAnnotationRendering(annotationRendering);
-            PDFView.this.setScrollHandle(scrollHandle);
-            PDFView.this.enableAntialiasing(antialiasing);
-            PDFView.this.setSpacing(spacing);
-            PDFView.this.setAutoSpacing(autoSpacing);
-            PDFView.this.setPageFitPolicy(pageFitPolicy);
-            PDFView.this.setFitEachPage(fitEachPage);
-            PDFView.this.setPageSnap(pageSnap);
-            PDFView.this.setPageFling(pageFling);
-
-            if (pageNumbers != null) {
-                PDFView.this.load(documentSource, password, pageNumbers);
-            } else {
-                PDFView.this.load(documentSource, password);
-            }
-        }
-    }
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.ColorMatrix;
+import android.graphics.ColorMatrixColorFilter;
+import android.graphics.Paint;
+import android.graphics.Paint.Style;
+import android.graphics.PaintFlagsDrawFilter;
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Build;
+import android.os.HandlerThread;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.widget.RelativeLayout;
+
+import com.github.barteksc.pdfviewer.exception.PageRenderingException;
+import com.github.barteksc.pdfviewer.link.DefaultLinkHandler;
+import com.github.barteksc.pdfviewer.link.LinkHandler;
+import com.github.barteksc.pdfviewer.listener.Callbacks;
+import com.github.barteksc.pdfviewer.listener.OnDrawListener;
+import com.github.barteksc.pdfviewer.listener.OnErrorListener;
+import com.github.barteksc.pdfviewer.listener.OnLoadCompleteListener;
+import com.github.barteksc.pdfviewer.listener.OnLongPressListener;
+import com.github.barteksc.pdfviewer.listener.OnPageChangeListener;
+import com.github.barteksc.pdfviewer.listener.OnPageErrorListener;
+import com.github.barteksc.pdfviewer.listener.OnPageScrollListener;
+import com.github.barteksc.pdfviewer.listener.OnRenderListener;
+import com.github.barteksc.pdfviewer.listener.OnTapListener;
+import com.github.barteksc.pdfviewer.model.PagePart;
+import com.github.barteksc.pdfviewer.scroll.ScrollHandle;
+import com.github.barteksc.pdfviewer.source.AssetSource;
+import com.github.barteksc.pdfviewer.source.ByteArraySource;
+import com.github.barteksc.pdfviewer.source.DocumentSource;
+import com.github.barteksc.pdfviewer.source.FileSource;
+import com.github.barteksc.pdfviewer.source.InputStreamSource;
+import com.github.barteksc.pdfviewer.source.UriSource;
+import com.github.barteksc.pdfviewer.util.Constants;
+import com.github.barteksc.pdfviewer.util.FitPolicy;
+import com.github.barteksc.pdfviewer.util.MathUtils;
+import com.github.barteksc.pdfviewer.util.SnapEdge;
+import com.github.barteksc.pdfviewer.util.Util;
+import com.shockwave.pdfium.PdfDocument;
+import com.shockwave.pdfium.PdfiumCore;
+import com.shockwave.pdfium.util.Size;
+import com.shockwave.pdfium.util.SizeF;
+
+import java.io.File;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * It supports animations, zoom, cache, and swipe.
+ * <p>
+ * To fully understand this class you must know its principles :
+ * - The PDF document is seen as if we always want to draw all the pages.
+ * - The thing is that we only draw the visible parts.
+ * - All parts are the same size, this is because we can't interrupt a native page rendering,
+ * so we need these renderings to be as fast as possible, and be able to interrupt them
+ * as soon as we can.
+ * - The parts are loaded when the current offset or the current zoom level changes
+ * <p>
+ * Important :
+ * - DocumentPage = A page of the PDF document.
+ * - UserPage = A page as defined by the user.
+ * By default, they're the same. But the user can change the pages order
+ * using {@link #load(DocumentSource, String, int[])}. In this
+ * particular case, a userPage of 5 can refer to a documentPage of 17.
+ */
+public class PDFView extends RelativeLayout {
+
+    private static final String TAG = PDFView.class.getSimpleName();
+
+    public static final float DEFAULT_MAX_SCALE = 3.0f;
+    public static final float DEFAULT_MID_SCALE = 1.75f;
+    public static final float DEFAULT_MIN_SCALE = 1.0f;
+
+    private float minZoom = DEFAULT_MIN_SCALE;
+    private float midZoom = DEFAULT_MID_SCALE;
+    private float maxZoom = DEFAULT_MAX_SCALE;
+
+    /**
+     * START - scrolling in first page direction
+     * END - scrolling in last page direction
+     * NONE - not scrolling
+     */
+    enum ScrollDir {
+        NONE, START, END
+    }
+
+    private ScrollDir scrollDir = ScrollDir.NONE;
+
+    /** Rendered parts go to the cache manager */
+    CacheManager cacheManager;
+
+    /** Animation manager manage all offset and zoom animation */
+    private AnimationManager animationManager;
+
+    /** Drag manager manage all touch events */
+    private DragPinchManager dragPinchManager;
+
+    PdfFile pdfFile;
+
+    /** The index of the current sequence */
+    private int currentPage;
+
+    /**
+     * If you picture all the pages side by side in their optimal width,
+     * and taking into account the zoom level, the current offset is the
+     * position of the left border of the screen in this big picture
+     */
+    private float currentXOffset = 0;
+
+    /**
+     * If you picture all the pages side by side in their optimal width,
+     * and taking into account the zoom level, the current offset is the
+     * position of the left border of the screen in this big picture
+     */
+    private float currentYOffset = 0;
+
+    /** The zoom level, always >= 1 */
+    private float zoom = 1f;
+
+    /** True if the PDFView has been recycled */
+    private boolean recycled = true;
+
+    /** Current state of the view */
+    private State state = State.DEFAULT;
+
+    /** Async task used during the loading phase to decode a PDF document */
+    private DecodingAsyncTask decodingAsyncTask;
+
+    /** The thread {@link #renderingHandler} will run on */
+    private HandlerThread renderingHandlerThread;
+    /** Handler always waiting in the background and rendering tasks */
+    RenderingHandler renderingHandler;
+
+    private PagesLoader pagesLoader;
+
+    Callbacks callbacks = new Callbacks();
+
+    /** Paint object for drawing */
+    private Paint paint;
+
+    /** Paint object for drawing debug stuff */
+    private Paint debugPaint;
+
+    /** Policy for fitting pages to screen */
+    private FitPolicy pageFitPolicy = FitPolicy.WIDTH;
+
+    private boolean fitEachPage = false;
+
+    private int defaultPage = 0;
+
+    private boolean dualPageMode = false;
+
+    private boolean isLandscapeOrientation = false;
+
+    /** True if should scroll through pages vertically instead of horizontally */
+    private boolean swipeVertical = true;
+
+    private boolean enableSwipe = true;
+
+    private boolean doubletapEnabled = true;
+
+    private boolean nightMode = false;
+
+    private boolean pageSnap = true;
+
+    /** Pdfium core for loading and rendering PDFs */
+    private PdfiumCore pdfiumCore;
+
+    private ScrollHandle scrollHandle;
+
+    private boolean isScrollHandleInit = false;
+
+    ScrollHandle getScrollHandle() {
+        return scrollHandle;
+    }
+
+    /**
+     * True if bitmap should use ARGB_8888 format and take more memory
+     * False if bitmap should be compressed by using RGB_565 format and take less memory
+     */
+    private boolean bestQuality = false;
+
+    /**
+     * True if annotations should be rendered
+     * False otherwise
+     */
+    private boolean annotationRendering = false;
+
+    /**
+     * True if the view should render during scaling<br/>
+     * Can not be forced on older API versions (< Build.VERSION_CODES.KITKAT) as the GestureDetector does
+     * not detect scrolling while scaling.<br/>
+     * False otherwise
+     */
+    private boolean renderDuringScale = false;
+
+    /** Antialiasing and bitmap filtering */
+    private boolean enableAntialiasing = true;
+    private PaintFlagsDrawFilter antialiasFilter =
+            new PaintFlagsDrawFilter(0, Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
+
+    /** Spacing between pages, in px */
+    private int spacingPx = 0;
+
+    /** Add dynamic spacing to fit each page separately on the screen. */
+    private boolean autoSpacing = false;
+
+    /** Fling a single page at a time */
+    private boolean pageFling = true;
+
+    /** Pages numbers used when calling onDrawAllListener */
+    private List<Integer> onDrawPagesNums = new ArrayList<>(10);
+
+    /** Holds info whether view has been added to layout and has width and height */
+    private boolean hasSize = false;
+
+    /** Holds last used Configurator that should be loaded when view has size */
+    private Configurator waitingDocumentConfigurator;
+
+    /** Construct the initial view */
+    public PDFView(Context context, AttributeSet set) {
+        super(context, set);
+
+        renderingHandlerThread = new HandlerThread("PDF renderer");
+
+        if (isInEditMode()) {
+            return;
+        }
+
+        cacheManager = new CacheManager();
+        animationManager = new AnimationManager(this);
+        dragPinchManager = new DragPinchManager(this, animationManager);
+        pagesLoader = new PagesLoader(this);
+
+        paint = new Paint();
+        debugPaint = new Paint();
+        debugPaint.setStyle(Style.STROKE);
+
+        pdfiumCore = new PdfiumCore(context);
+        setWillNotDraw(false);
+    }
+
+    private void load(DocumentSource docSource, String password) {
+        load(docSource, password, null);
+    }
+
+    private void load(DocumentSource docSource, String password, int[] userPages) {
+
+        if (!recycled) {
+            throw new IllegalStateException("Don't call load on a PDF View without recycling it first.");
+        }
+
+        recycled = false;
+        // Start decoding document
+        decodingAsyncTask = new DecodingAsyncTask(docSource, password, userPages, this, pdfiumCore);
+        decodingAsyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+    }
+
+    /**
+     * Go to the given page.
+     *
+     * @param page Page index.
+     */
+    public void jumpTo(int page, boolean withAnimation) {
+        if (pdfFile == null) {
+            return;
+        }
+
+        page = pdfFile.determineValidPageNumberFrom(page);
+        float offset = page == 0 ? 0 : -pdfFile.getPageOffset(page, zoom);
+        if (swipeVertical) {
+            if (withAnimation) {
+                animationManager.startYAnimation(currentYOffset, offset);
+            } else {
+                moveTo(currentXOffset, offset);
+            }
+        } else {
+            if (withAnimation) {
+                animationManager.startXAnimation(currentXOffset, offset);
+            } else {
+                moveTo(offset, currentYOffset);
+            }
+        }
+        showPage(page);
+    }
+
+    public void jumpTo(int page) {
+        jumpTo(page, false);
+    }
+
+    void showPage(int pageNb) {
+        if (recycled) {
+            return;
+        }
+
+        // Check the page number and makes the
+        // difference between UserPages and DocumentPages
+        pageNb = pdfFile.determineValidPageNumberFrom(pageNb);
+        currentPage = pageNb;
+
+        loadPages();
+
+        if (scrollHandle != null && !documentFitsView()) {
+            scrollHandle.setPageNum(currentPage + 1);
+        }
+
+        callbacks.callOnPageChange(currentPage, pdfFile.getPagesCount());
+    }
+
+    /**
+     * Get current position as ratio of document length to visible area.
+     * 0 means that document start is visible, 1 that document end is visible
+     *
+     * @return offset between 0 and 1
+     */
+    public float getPositionOffset() {
+        float offset;
+        if (swipeVertical) {
+            offset = -currentYOffset / (pdfFile.getDocLen(zoom) - getHeight());
+        } else {
+            offset = -currentXOffset / (pdfFile.getDocLen(zoom) - getWidth());
+        }
+        return MathUtils.limit(offset, 0, 1);
+    }
+
+    /**
+     * @param progress   must be between 0 and 1
+     * @param moveHandle whether to move scroll handle
+     * @see PDFView#getPositionOffset()
+     */
+    public void setPositionOffset(float progress, boolean moveHandle) {
+        if (swipeVertical) {
+            moveTo(currentXOffset, (-pdfFile.getDocLen(zoom) + getHeight()) * progress, moveHandle);
+        } else {
+            moveTo((-pdfFile.getDocLen(zoom) + getWidth()) * progress, currentYOffset, moveHandle);
+        }
+        loadPageByOffset();
+    }
+
+    public void setPositionOffset(float progress) {
+        setPositionOffset(progress, true);
+    }
+
+    public void stopFling() {
+        animationManager.stopFling();
+    }
+
+    public int getPageCount() {
+        if (pdfFile == null) {
+            return 0;
+        }
+        return pdfFile.getPagesCount();
+    }
+
+    public void setSwipeEnabled(boolean enableSwipe) {
+        this.enableSwipe = enableSwipe;
+    }
+
+    public void setNightMode(boolean nightMode) {
+        this.nightMode = nightMode;
+        if (nightMode) {
+            ColorMatrix colorMatrixInverted =
+                    new ColorMatrix(new float[]{
+                            -1, 0, 0, 0, 255,
+                            0, -1, 0, 0, 255,
+                            0, 0, -1, 0, 255,
+                            0, 0, 0, 1, 0});
+
+            ColorMatrixColorFilter filter = new ColorMatrixColorFilter(colorMatrixInverted);
+            paint.setColorFilter(filter);
+        } else {
+            paint.setColorFilter(null);
+        }
+    }
+
+    void enableDoubletap(boolean enableDoubletap) {
+        this.doubletapEnabled = enableDoubletap;
+    }
+
+    boolean isDoubletapEnabled() {
+        return doubletapEnabled;
+    }
+
+    void onPageError(PageRenderingException ex) {
+        if (!callbacks.callOnPageError(ex.getPage(), ex.getCause())) {
+            Log.e(TAG, "Cannot open page " + ex.getPage(), ex.getCause());
+        }
+    }
+
+    public void recycle() {
+        waitingDocumentConfigurator = null;
+
+        animationManager.stopAll();
+        dragPinchManager.disable();
+
+        // Stop tasks
+        if (renderingHandler != null) {
+            renderingHandler.stop();
+            renderingHandler.removeMessages(RenderingHandler.MSG_RENDER_TASK);
+        }
+        if (decodingAsyncTask != null) {
+            decodingAsyncTask.cancel(true);
+        }
+
+        // Clear caches
+        cacheManager.recycle();
+
+        if (scrollHandle != null && isScrollHandleInit) {
+            scrollHandle.destroyLayout();
+        }
+
+        if (pdfFile != null) {
+            pdfFile.dispose();
+            pdfFile = null;
+        }
+
+        renderingHandler = null;
+        scrollHandle = null;
+        isScrollHandleInit = false;
+        currentXOffset = currentYOffset = 0;
+        zoom = 1f;
+        recycled = true;
+        callbacks = new Callbacks();
+        state = State.DEFAULT;
+    }
+
+    public boolean isRecycled() {
+        return recycled;
+    }
+
+    /** Handle fling animation */
+    @Override
+    public void computeScroll() {
+        super.computeScroll();
+        if (isInEditMode()) {
+            return;
+        }
+        animationManager.computeFling();
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        recycle();
+        if (renderingHandlerThread != null) {
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+                renderingHandlerThread.quitSafely();
+            } else {
+                renderingHandlerThread.quit();
+            }
+            renderingHandlerThread = null;
+        }
+        super.onDetachedFromWindow();
+    }
+
+    @Override
+    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
+        hasSize = true;
+        if (waitingDocumentConfigurator != null) {
+            waitingDocumentConfigurator.load();
+        }
+        if (isInEditMode() || state != State.SHOWN) {
+            return;
+        }
+
+        // calculates the position of the point which in the center of view relative to big strip
+        float centerPointInStripXOffset = -currentXOffset + oldw * 0.5f;
+        float centerPointInStripYOffset = -currentYOffset + oldh * 0.5f;
+
+        float relativeCenterPointInStripXOffset;
+        float relativeCenterPointInStripYOffset;
+
+        if (swipeVertical){
+            relativeCenterPointInStripXOffset = centerPointInStripXOffset / pdfFile.getMaxPageWidth();
+            relativeCenterPointInStripYOffset = centerPointInStripYOffset / pdfFile.getDocLen(zoom);
+        }else {
+            relativeCenterPointInStripXOffset = centerPointInStripXOffset / pdfFile.getDocLen(zoom);
+            relativeCenterPointInStripYOffset = centerPointInStripYOffset / pdfFile.getMaxPageHeight();
+        }
+
+        animationManager.stopAll();
+        pdfFile.recalculatePageSizes(new Size(w, h));
+
+        if (swipeVertical) {
+            currentXOffset = -relativeCenterPointInStripXOffset * pdfFile.getMaxPageWidth() + w * 0.5f;
+            currentYOffset = -relativeCenterPointInStripYOffset * pdfFile.getDocLen(zoom) + h * 0.5f ;
+        }else {
+            currentXOffset = -relativeCenterPointInStripXOffset * pdfFile.getDocLen(zoom) + w * 0.5f;
+            currentYOffset = -relativeCenterPointInStripYOffset * pdfFile.getMaxPageHeight() + h * 0.5f;
+        }
+        moveTo(currentXOffset,currentYOffset);
+        loadPageByOffset();
+    }
+
+    @Override
+    public boolean canScrollHorizontally(int direction) {
+        if (pdfFile == null) {
+            return true;
+        }
+
+        if (swipeVertical) {
+            if (direction < 0 && currentXOffset < 0) {
+                return true;
+            } else if (direction > 0 && currentXOffset + toCurrentScale(pdfFile.getMaxPageWidth()) > getWidth()) {
+                return true;
+            }
+        } else {
+            if (direction < 0 && currentXOffset < 0) {
+                return true;
+            } else if (direction > 0 && currentXOffset + pdfFile.getDocLen(zoom) > getWidth()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean canScrollVertically(int direction) {
+        if (pdfFile == null) {
+            return true;
+        }
+
+        if (swipeVertical) {
+            if (direction < 0 && currentYOffset < 0) {
+                return true;
+            } else if (direction > 0 && currentYOffset + pdfFile.getDocLen(zoom) > getHeight()) {
+                return true;
+            }
+        } else {
+            if (direction < 0 && currentYOffset < 0) {
+                return true;
+            } else if (direction > 0 && currentYOffset + toCurrentScale(pdfFile.getMaxPageHeight()) > getHeight()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        if (isInEditMode()) {
+            return;
+        }
+        // As I said in this class javadoc, we can think of this canvas as a huge
+        // strip on which we draw all the images. We actually only draw the rendered
+        // parts, of course, but we render them in the place they belong in this huge
+        // strip.
+
+        // That's where Canvas.translate(x, y) becomes very helpful.
+        // This is the situation :
+        //  _______________________________________________
+        // |   			 |					 			   |
+        // | the actual  |					The big strip  |
+        // |	canvas	 | 								   |
+        // |_____________|								   |
+        // |_______________________________________________|
+        //
+        // If the rendered part is on the bottom right corner of the strip
+        // we can draw it but we won't see it because the canvas is not big enough.
+
+        // But if we call translate(-X, -Y) on the canvas just before drawing the object :
+        //  _______________________________________________
+        // |   			  					  _____________|
+        // |   The big strip     			 |			   |
+        // |		    					 |	the actual |
+        // |								 |	canvas	   |
+        // |_________________________________|_____________|
+        //
+        // The object will be on the canvas.
+        // This technique is massively used in this method, and allows
+        // abstraction of the screen position when rendering the parts.
+
+        // Draws background
+
+        if (enableAntialiasing) {
+            canvas.setDrawFilter(antialiasFilter);
+        }
+
+        Drawable bg = getBackground();
+        if (bg == null) {
+            canvas.drawColor(nightMode ? Color.BLACK : Color.WHITE);
+        } else {
+            bg.draw(canvas);
+        }
+
+        if (recycled) {
+            return;
+        }
+
+        if (state != State.SHOWN) {
+            return;
+        }
+
+        // Moves the canvas before drawing any element
+        float currentXOffset = this.currentXOffset;
+        float currentYOffset = this.currentYOffset;
+        canvas.translate(currentXOffset, currentYOffset);
+
+        // Draws thumbnails
+        for (PagePart part : cacheManager.getThumbnails()) {
+            drawPart(canvas, part);
+
+        }
+
+        // Draws parts
+        for (PagePart part : cacheManager.getPageParts()) {
+            drawPart(canvas, part);
+            if (callbacks.getOnDrawAll() != null
+                    && !onDrawPagesNums.contains(part.getPage())) {
+                onDrawPagesNums.add(part.getPage());
+            }
+        }
+
+        for (Integer page : onDrawPagesNums) {
+            drawWithListener(canvas, page, callbacks.getOnDrawAll());
+        }
+        onDrawPagesNums.clear();
+
+        drawWithListener(canvas, currentPage, callbacks.getOnDraw());
+
+        // Restores the canvas position
+        canvas.translate(-currentXOffset, -currentYOffset);
+    }
+
+    private void drawWithListener(Canvas canvas, int page, OnDrawListener listener) {
+        if (listener != null) {
+            float translateX, translateY;
+            if (swipeVertical) {
+                translateX = 0;
+                translateY = pdfFile.getPageOffset(page, zoom);
+            } else {
+                translateY = 0;
+                translateX = pdfFile.getPageOffset(page, zoom);
+            }
+
+            canvas.translate(translateX, translateY);
+            SizeF size = pdfFile.getPageSize(page);
+            listener.onLayerDrawn(canvas,
+                    toCurrentScale(size.getWidth()),
+                    toCurrentScale(size.getHeight()),
+                    page);
+
+            canvas.translate(-translateX, -translateY);
+        }
+    }
+
+    /** Draw a given PagePart on the canvas */
+    private void drawPart(Canvas canvas, PagePart part) {
+        // Can seem strange, but avoid lot of calls
+        RectF pageRelativeBounds = part.getPageRelativeBounds();
+        Bitmap renderedBitmap = part.getRenderedBitmap();
+
+        if (renderedBitmap.isRecycled()) {
+            return;
+        }
+
+        // Move to the target page
+        float localTranslationX = 0;
+        float localTranslationY = 0;
+        SizeF size = pdfFile.getPageSize(part.getPage());
+
+        if (swipeVertical) {
+            localTranslationY = pdfFile.getPageOffset(part.getPage(), zoom);
+            float maxWidth = pdfFile.getMaxPageWidth();
+            localTranslationX = toCurrentScale(maxWidth - size.getWidth()) / 2;
+        } else {
+            localTranslationX = pdfFile.getPageOffset(part.getPage(), zoom);
+            float maxHeight = pdfFile.getMaxPageHeight();
+            localTranslationY = toCurrentScale(maxHeight - size.getHeight()) / 2;
+        }
+        canvas.translate(localTranslationX, localTranslationY);
+
+        Rect srcRect = new Rect(0, 0, renderedBitmap.getWidth(),
+                renderedBitmap.getHeight());
+
+        float offsetX = toCurrentScale(pageRelativeBounds.left * size.getWidth());
+        float offsetY = toCurrentScale(pageRelativeBounds.top * size.getHeight());
+        float width = toCurrentScale(pageRelativeBounds.width() * size.getWidth());
+        float height = toCurrentScale(pageRelativeBounds.height() * size.getHeight());
+
+        // If we use float values for this rectangle, there will be
+        // a possible gap between page parts, especially when
+        // the zoom level is high.
+        RectF dstRect = new RectF((int) offsetX, (int) offsetY,
+                (int) (offsetX + width),
+                (int) (offsetY + height));
+
+        // Check if bitmap is in the screen
+        float translationX = currentXOffset + localTranslationX;
+        float translationY = currentYOffset + localTranslationY;
+        if (translationX + dstRect.left >= getWidth() || translationX + dstRect.right <= 0 ||
+                translationY + dstRect.top >= getHeight() || translationY + dstRect.bottom <= 0) {
+            canvas.translate(-localTranslationX, -localTranslationY);
+            return;
+        }
+
+        canvas.drawBitmap(renderedBitmap, srcRect, dstRect, paint);
+
+        if (Constants.DEBUG_MODE) {
+            debugPaint.setColor(part.getPage() % 2 == 0 ? Color.RED : Color.BLUE);
+            canvas.drawRect(dstRect, debugPaint);
+        }
+
+        // Restore the canvas position
+        canvas.translate(-localTranslationX, -localTranslationY);
+
+    }
+
+    /**
+     * Load all the parts around the center of the screen,
+     * taking into account X and Y offsets, zoom level, and
+     * the current page displayed
+     */
+    public void loadPages() {
+        if (pdfFile == null || renderingHandler == null) {
+            return;
+        }
+
+        // Cancel all current tasks
+        renderingHandler.removeMessages(RenderingHandler.MSG_RENDER_TASK);
+        cacheManager.makeANewSet();
+
+        pagesLoader.loadPages();
+        redraw();
+    }
+
+    /** Called when the PDF is loaded */
+    void loadComplete(PdfFile pdfFile) {
+        state = State.LOADED;
+
+        this.pdfFile = pdfFile;
+
+        if (!renderingHandlerThread.isAlive()) {
+            renderingHandlerThread.start();
+        }
+        renderingHandler = new RenderingHandler(renderingHandlerThread.getLooper(), this);
+        renderingHandler.start();
+
+        if (scrollHandle != null) {
+            scrollHandle.setupLayout(this);
+            isScrollHandleInit = true;
+        }
+
+        dragPinchManager.enable();
+
+        callbacks.callOnLoadComplete(pdfFile.getPagesCount());
+
+        jumpTo(defaultPage, false);
+    }
+
+    void loadError(Throwable t) {
+        state = State.ERROR;
+        // store reference, because callbacks will be cleared in recycle() method
+        OnErrorListener onErrorListener = callbacks.getOnError();
+        recycle();
+        invalidate();
+        if (onErrorListener != null) {
+            onErrorListener.onError(t);
+        } else {
+            Log.e("PDFView", "load pdf error", t);
+        }
+    }
+
+    void redraw() {
+        invalidate();
+    }
+
+    /**
+     * Called when a rendering task is over and
+     * a PagePart has been freshly created.
+     *
+     * @param part The created PagePart.
+     */
+    public void onBitmapRendered(PagePart part) {
+        // when it is first rendered part
+        if (state == State.LOADED) {
+            state = State.SHOWN;
+            callbacks.callOnRender(pdfFile.getPagesCount());
+        }
+
+        if (part.isThumbnail()) {
+            cacheManager.cacheThumbnail(part);
+        } else {
+            cacheManager.cachePart(part);
+        }
+        redraw();
+    }
+
+    public void moveTo(float offsetX, float offsetY) {
+        moveTo(offsetX, offsetY, true);
+    }
+
+    /**
+     * Move to the given X and Y offsets, but check them ahead of time
+     * to be sure not to go outside the the big strip.
+     *
+     * @param offsetX    The big strip X offset to use as the left border of the screen.
+     * @param offsetY    The big strip Y offset to use as the right border of the screen.
+     * @param moveHandle whether to move scroll handle or not
+     */
+    public void moveTo(float offsetX, float offsetY, boolean moveHandle) {
+        if (swipeVertical) {
+            // Check X offset
+            float scaledPageWidth = toCurrentScale(pdfFile.getMaxPageWidth());
+            if (scaledPageWidth < getWidth()) {
+                offsetX = getWidth() / 2 - scaledPageWidth / 2;
+            } else {
+                if (offsetX > 0) {
+                    offsetX = 0;
+                } else if (offsetX + scaledPageWidth < getWidth()) {
+                    offsetX = getWidth() - scaledPageWidth;
+                }
+            }
+
+            // Check Y offset
+            float contentHeight = pdfFile.getDocLen(zoom);
+            if (contentHeight < getHeight()) { // whole document height visible on screen
+                offsetY = (getHeight() - contentHeight) / 2;
+            } else {
+                if (offsetY > 0) { // top visible
+                    offsetY = 0;
+                } else if (offsetY + contentHeight < getHeight()) { // bottom visible
+                    offsetY = -contentHeight + getHeight();
+                }
+            }
+
+            if (offsetY < currentYOffset) {
+                scrollDir = ScrollDir.END;
+            } else if (offsetY > currentYOffset) {
+                scrollDir = ScrollDir.START;
+            } else {
+                scrollDir = ScrollDir.NONE;
+            }
+        } else {
+            // Check Y offset
+            float scaledPageHeight = toCurrentScale(pdfFile.getMaxPageHeight());
+            if (scaledPageHeight < getHeight()) {
+                offsetY = getHeight() / 2 - scaledPageHeight / 2;
+            } else {
+                if (offsetY > 0) {
+                    offsetY = 0;
+                } else if (offsetY + scaledPageHeight < getHeight()) {
+                    offsetY = getHeight() - scaledPageHeight;
+                }
+            }
+
+            // Check X offset
+            float contentWidth = pdfFile.getDocLen(zoom);
+            if (contentWidth < getWidth()) { // whole document width visible on screen
+                offsetX = (getWidth() - contentWidth) / 2;
+            } else {
+                if (offsetX > 0) { // left visible
+                    offsetX = 0;
+                } else if (offsetX + contentWidth < getWidth()) { // right visible
+                    offsetX = -contentWidth + getWidth();
+                }
+            }
+
+            if (offsetX < currentXOffset) {
+                scrollDir = ScrollDir.END;
+            } else if (offsetX > currentXOffset) {
+                scrollDir = ScrollDir.START;
+            } else {
+                scrollDir = ScrollDir.NONE;
+            }
+        }
+
+        currentXOffset = offsetX;
+        currentYOffset = offsetY;
+        float positionOffset = getPositionOffset();
+
+        if (moveHandle && scrollHandle != null && !documentFitsView()) {
+            scrollHandle.setScroll(positionOffset);
+        }
+
+        callbacks.callOnPageScroll(getCurrentPage(), positionOffset);
+
+        redraw();
+    }
+
+    void loadPageByOffset() {
+        if (0 == pdfFile.getPagesCount()) {
+            return;
+        }
+
+        float offset, screenCenter;
+        if (swipeVertical) {
+            offset = currentYOffset;
+            screenCenter = ((float) getHeight()) / 2;
+        } else {
+            offset = currentXOffset;
+            screenCenter = ((float) getWidth()) / 2;
+        }
+
+        int page = pdfFile.getPageAtOffset(-(offset - screenCenter), zoom);
+
+        if (page >= 0 && page <= pdfFile.getPagesCount() - 1 && page != getCurrentPage()) {
+            showPage(page);
+        } else {
+            loadPages();
+        }
+    }
+
+    /**
+     * Animate to the nearest snapping position for the current SnapPolicy
+     */
+    public void performPageSnap() {
+        if (!pageSnap || pdfFile == null || pdfFile.getPagesCount() == 0) {
+            return;
+        }
+        int centerPage = findFocusPage(currentXOffset, currentYOffset);
+        SnapEdge edge = findSnapEdge(centerPage);
+        if (edge == SnapEdge.NONE) {
+            return;
+        }
+
+        float offset = snapOffsetForPage(centerPage, edge);
+        if (swipeVertical) {
+            animationManager.startYAnimation(currentYOffset, -offset);
+        } else {
+            animationManager.startXAnimation(currentXOffset, -offset);
+        }
+    }
+
+    /**
+     * Find the edge to snap to when showing the specified page
+     */
+    SnapEdge findSnapEdge(int page) {
+        if (!pageSnap || page < 0) {
+            return SnapEdge.NONE;
+        }
+        float currentOffset = swipeVertical ? currentYOffset : currentXOffset;
+        float offset = -pdfFile.getPageOffset(page, zoom);
+        int length = swipeVertical ? getHeight() : getWidth();
+        float pageLength = pdfFile.getPageLength(page, zoom);
+
+        if (length >= pageLength) {
+            return SnapEdge.CENTER;
+        } else if (currentOffset >= offset) {
+            return SnapEdge.START;
+        } else if (offset - pageLength > currentOffset - length) {
+            return SnapEdge.END;
+        } else {
+            return SnapEdge.NONE;
+        }
+    }
+
+    /**
+     * Get the offset to move to in order to snap to the page
+     */
+    float snapOffsetForPage(int pageIndex, SnapEdge edge) {
+        float offset = pdfFile.getPageOffset(pageIndex, zoom);
+
+        float length = swipeVertical ? getHeight() : getWidth();
+        float pageLength = pdfFile.getPageLength(pageIndex, zoom);
+
+        if (edge == SnapEdge.CENTER) {
+            offset = offset - length / 2f + pageLength / 2f;
+        } else if (edge == SnapEdge.END) {
+            offset = offset - length + pageLength;
+        }
+        return offset;
+    }
+
+    int findFocusPage(float xOffset, float yOffset) {
+        float currOffset = swipeVertical ? yOffset : xOffset;
+        float length = swipeVertical ? getHeight() : getWidth();
+        // make sure first and last page can be found
+        if (currOffset > -1) {
+            return 0;
+        } else if (currOffset < -pdfFile.getDocLen(zoom) + length + 1) {
+            return pdfFile.getPagesCount() - 1;
+        }
+        // else find page in center
+        float center = currOffset - length / 2f;
+        return pdfFile.getPageAtOffset(-center, zoom);
+    }
+
+    /**
+     * @return true if single page fills the entire screen in the scrolling direction
+     */
+    public boolean pageFillsScreen() {
+        float start = -pdfFile.getPageOffset(currentPage, zoom);
+        float end = start - pdfFile.getPageLength(currentPage, zoom);
+        if (isSwipeVertical()) {
+            return start > currentYOffset && end < currentYOffset - getHeight();
+        } else {
+            return start > currentXOffset && end < currentXOffset - getWidth();
+        }
+    }
+
+    /**
+     * Move relatively to the current position.
+     *
+     * @param dx The X difference you want to apply.
+     * @param dy The Y difference you want to apply.
+     * @see #moveTo(float, float)
+     */
+    public void moveRelativeTo(float dx, float dy) {
+        moveTo(currentXOffset + dx, currentYOffset + dy);
+    }
+
+    /**
+     * Change the zoom level
+     */
+    public void zoomTo(float zoom) {
+        this.zoom = zoom;
+    }
+
+    /**
+     * Change the zoom level, relatively to a pivot point.
+     * It will call moveTo() to make sure the given point stays
+     * in the middle of the screen.
+     *
+     * @param zoom  The zoom level.
+     * @param pivot The point on the screen that should stays.
+     */
+    public void zoomCenteredTo(float zoom, PointF pivot) {
+        float dzoom = zoom / this.zoom;
+        zoomTo(zoom);
+        float baseX = currentXOffset * dzoom;
+        float baseY = currentYOffset * dzoom;
+        baseX += (pivot.x - pivot.x * dzoom);
+        baseY += (pivot.y - pivot.y * dzoom);
+        moveTo(baseX, baseY);
+    }
+
+    /**
+     * @see #zoomCenteredTo(float, PointF)
+     */
+    public void zoomCenteredRelativeTo(float dzoom, PointF pivot) {
+        zoomCenteredTo(zoom * dzoom, pivot);
+    }
+
+    /**
+     * Checks if whole document can be displayed on screen, doesn't include zoom
+     *
+     * @return true if whole document can displayed at once, false otherwise
+     */
+    public boolean documentFitsView() {
+        float len = pdfFile.getDocLen(1);
+        if (swipeVertical) {
+            return len < getHeight();
+        } else {
+            return len < getWidth();
+        }
+    }
+
+    public void fitToWidth(int page) {
+        if (state != State.SHOWN) {
+            Log.e(TAG, "Cannot fit, document not rendered yet");
+            return;
+        }
+        zoomTo(getWidth() / pdfFile.getPageSize(page).getWidth());
+        jumpTo(page);
+    }
+
+    public SizeF getPageSize(int pageIndex) {
+        if (pdfFile == null) {
+            return new SizeF(0, 0);
+        }
+        return pdfFile.getPageSize(pageIndex);
+    }
+
+    public int getCurrentPage() {
+        return currentPage;
+    }
+
+    public float getCurrentXOffset() {
+        return currentXOffset;
+    }
+
+    public float getCurrentYOffset() {
+        return currentYOffset;
+    }
+
+    public float toRealScale(float size) {
+        return size / zoom;
+    }
+
+    public float toCurrentScale(float size) {
+        return size * zoom;
+    }
+
+    public float getZoom() {
+        return zoom;
+    }
+
+    public boolean isZooming() {
+        return zoom != minZoom;
+    }
+
+    private void setDefaultPage(int defaultPage) {
+        this.defaultPage = defaultPage;
+    }
+
+    public void resetZoom() {
+        zoomTo(minZoom);
+    }
+
+    public void resetZoomWithAnimation() {
+        zoomWithAnimation(minZoom);
+    }
+
+    public void zoomWithAnimation(float centerX, float centerY, float scale) {
+        animationManager.startZoomAnimation(centerX, centerY, zoom, scale);
+    }
+
+    public void zoomWithAnimation(float scale) {
+        animationManager.startZoomAnimation(getWidth() / 2, getHeight() / 2, zoom, scale);
+    }
+
+    private void setScrollHandle(ScrollHandle scrollHandle) {
+        this.scrollHandle = scrollHandle;
+    }
+
+    /**
+     * Get page number at given offset
+     *
+     * @param positionOffset scroll offset between 0 and 1
+     * @return page number at given offset, starting from 0
+     */
+    public int getPageAtPositionOffset(float positionOffset) {
+        return pdfFile.getPageAtOffset(pdfFile.getDocLen(zoom) * positionOffset, zoom);
+    }
+
+    public float getMinZoom() {
+        return minZoom;
+    }
+
+    public void setMinZoom(float minZoom) {
+        this.minZoom = minZoom;
+    }
+
+    public float getMidZoom() {
+        return midZoom;
+    }
+
+    public void setMidZoom(float midZoom) {
+        this.midZoom = midZoom;
+    }
+
+    public float getMaxZoom() {
+        return maxZoom;
+    }
+
+    public void setMaxZoom(float maxZoom) {
+        this.maxZoom = maxZoom;
+    }
+
+    public void useBestQuality(boolean bestQuality) {
+        this.bestQuality = bestQuality;
+    }
+
+    public boolean isBestQuality() {
+        return bestQuality;
+    }
+
+    public boolean isOnDualPageMode() {
+        return dualPageMode;
+    }
+
+    public boolean isOnLandscapeOrientation() { return isLandscapeOrientation; }
+
+    public void setLandscapeOrientation(boolean landscapeOrientation) {this.isLandscapeOrientation = landscapeOrientation; }
+
+    public void setDualPageMode(boolean dualPageMode) {
+        this.dualPageMode = dualPageMode;
+    }
+
+    public boolean isSwipeVertical() {
+        return swipeVertical;
+    }
+
+    public boolean isSwipeEnabled() {
+        return enableSwipe;
+    }
+
+    private void setSwipeVertical(boolean swipeVertical) {
+        this.swipeVertical = swipeVertical;
+    }
+
+    public void enableAnnotationRendering(boolean annotationRendering) {
+        this.annotationRendering = annotationRendering;
+    }
+
+    public boolean isAnnotationRendering() {
+        return annotationRendering;
+    }
+
+    public void enableRenderDuringScale(boolean renderDuringScale) {
+        this.renderDuringScale = renderDuringScale;
+    }
+
+    public boolean isAntialiasing() {
+        return enableAntialiasing;
+    }
+
+    public void enableAntialiasing(boolean enableAntialiasing) {
+        this.enableAntialiasing = enableAntialiasing;
+    }
+
+    public int getSpacingPx() {
+        return spacingPx;
+    }
+
+    public boolean isAutoSpacingEnabled() {
+        return autoSpacing;
+    }
+
+    public void setPageFling(boolean pageFling) {
+        this.pageFling = pageFling;
+    }
+
+    public boolean isPageFlingEnabled() {
+        return pageFling;
+    }
+
+    private void setSpacing(int spacingDp) {
+        this.spacingPx = Util.getDP(getContext(), spacingDp);
+    }
+
+    private void setAutoSpacing(boolean autoSpacing) {
+        this.autoSpacing = autoSpacing;
+    }
+
+    private void setPageFitPolicy(FitPolicy pageFitPolicy) {
+        this.pageFitPolicy = pageFitPolicy;
+    }
+
+    public FitPolicy getPageFitPolicy() {
+        return pageFitPolicy;
+    }
+
+    private void setFitEachPage(boolean fitEachPage) {
+        this.fitEachPage = fitEachPage;
+    }
+
+    public boolean isFitEachPage() {
+        return fitEachPage;
+    }
+
+    public boolean isPageSnap() {
+        return pageSnap;
+    }
+
+    public void setPageSnap(boolean pageSnap) {
+        this.pageSnap = pageSnap;
+    }
+
+    public boolean doRenderDuringScale() {
+        return renderDuringScale;
+    }
+
+    /** Returns null if document is not loaded */
+    public PdfDocument.Meta getDocumentMeta() {
+        if (pdfFile == null) {
+            return null;
+        }
+        return pdfFile.getMetaData();
+    }
+
+    /** Will be empty until document is loaded */
+    public List<PdfDocument.Bookmark> getTableOfContents() {
+        if (pdfFile == null) {
+            return Collections.emptyList();
+        }
+        return pdfFile.getBookmarks();
+    }
+
+    /** Will be empty until document is loaded */
+    public List<PdfDocument.Link> getLinks(int page) {
+        if (pdfFile == null) {
+            return Collections.emptyList();
+        }
+        return pdfFile.getPageLinks(page);
+    }
+
+    /** Use an asset file as the pdf source */
+    public Configurator fromAsset(String assetName) {
+        return new Configurator(new AssetSource(assetName));
+    }
+
+    /** Use a file as the pdf source */
+    public Configurator fromFile(File file) {
+        return new Configurator(new FileSource(file));
+    }
+
+    /** Use URI as the pdf source, for use with content providers */
+    public Configurator fromUri(Uri uri) {
+        return new Configurator(new UriSource(uri));
+    }
+
+    /** Use bytearray as the pdf source, documents is not saved */
+    public Configurator fromBytes(byte[] bytes) {
+        return new Configurator(new ByteArraySource(bytes));
+    }
+
+    /** Use stream as the pdf source. Stream will be written to bytearray, because native code does not support Java Streams */
+    public Configurator fromStream(InputStream stream) {
+        return new Configurator(new InputStreamSource(stream));
+    }
+
+    /** Use custom source as pdf source */
+    public Configurator fromSource(DocumentSource docSource) {
+        return new Configurator(docSource);
+    }
+
+    private enum State {DEFAULT, LOADED, SHOWN, ERROR}
+
+    public class Configurator {
+
+        private final DocumentSource documentSource;
+
+        private int[] pageNumbers = null;
+
+        private boolean enableSwipe = true;
+
+        private boolean enableDoubletap = true;
+
+        private OnDrawListener onDrawListener;
+
+        private OnDrawListener onDrawAllListener;
+
+        private OnLoadCompleteListener onLoadCompleteListener;
+
+        private OnErrorListener onErrorListener;
+
+        private OnPageChangeListener onPageChangeListener;
+
+        private OnPageScrollListener onPageScrollListener;
+
+        private OnRenderListener onRenderListener;
+
+        private OnTapListener onTapListener;
+
+        private OnLongPressListener onLongPressListener;
+
+        private OnPageErrorListener onPageErrorListener;
+
+        private LinkHandler linkHandler = new DefaultLinkHandler(PDFView.this);
+
+        private int defaultPage = 0;
+
+        private boolean landscapeOrientation = false;
+
+        private boolean dualPageMode = false;
+
+        private boolean swipeHorizontal = false;
+
+        private boolean annotationRendering = false;
+
+        private String password = null;
+
+        private ScrollHandle scrollHandle = null;
+
+        private boolean antialiasing = true;
+
+        private int spacing = 0;
+
+        private boolean autoSpacing = false;
+
+        private FitPolicy pageFitPolicy = FitPolicy.WIDTH;
+
+        private boolean fitEachPage = false;
+
+        private boolean pageFling = false;
+
+        private boolean pageSnap = false;
+
+        private boolean nightMode = false;
+
+        private Configurator(DocumentSource documentSource) {
+            this.documentSource = documentSource;
+        }
+
+        public Configurator pages(int... pageNumbers) {
+            this.pageNumbers = pageNumbers;
+            return this;
+        }
+
+        public Configurator enableSwipe(boolean enableSwipe) {
+            this.enableSwipe = enableSwipe;
+            return this;
+        }
+
+        public Configurator enableDoubletap(boolean enableDoubletap) {
+            this.enableDoubletap = enableDoubletap;
+            return this;
+        }
+
+        public Configurator enableAnnotationRendering(boolean annotationRendering) {
+            this.annotationRendering = annotationRendering;
+            return this;
+        }
+
+        public Configurator onDraw(OnDrawListener onDrawListener) {
+            this.onDrawListener = onDrawListener;
+            return this;
+        }
+
+        public Configurator onDrawAll(OnDrawListener onDrawAllListener) {
+            this.onDrawAllListener = onDrawAllListener;
+            return this;
+        }
+
+        public Configurator onLoad(OnLoadCompleteListener onLoadCompleteListener) {
+            this.onLoadCompleteListener = onLoadCompleteListener;
+            return this;
+        }
+
+        public Configurator onPageScroll(OnPageScrollListener onPageScrollListener) {
+            this.onPageScrollListener = onPageScrollListener;
+            return this;
+        }
+
+        public Configurator onError(OnErrorListener onErrorListener) {
+            this.onErrorListener = onErrorListener;
+            return this;
+        }
+
+        public Configurator onPageError(OnPageErrorListener onPageErrorListener) {
+            this.onPageErrorListener = onPageErrorListener;
+            return this;
+        }
+
+        public Configurator onPageChange(OnPageChangeListener onPageChangeListener) {
+            this.onPageChangeListener = onPageChangeListener;
+            return this;
+        }
+
+        public Configurator onRender(OnRenderListener onRenderListener) {
+            this.onRenderListener = onRenderListener;
+            return this;
+        }
+
+        public Configurator onTap(OnTapListener onTapListener) {
+            this.onTapListener = onTapListener;
+            return this;
+        }
+
+        public Configurator onLongPress(OnLongPressListener onLongPressListener) {
+            this.onLongPressListener = onLongPressListener;
+            return this;
+        }
+
+        public Configurator linkHandler(LinkHandler linkHandler) {
+            this.linkHandler = linkHandler;
+            return this;
+        }
+
+        public Configurator defaultPage(int defaultPage) {
+            this.defaultPage = defaultPage;
+            return this;
+        }
+
+        public Configurator landscapeOrientation(boolean landscapeOrientation) {
+            this.landscapeOrientation = landscapeOrientation;
+            return this;
+        }
+
+        public Configurator dualPageMode(boolean dualPageMode) {
+            this.dualPageMode = dualPageMode;
+            return this;
+        }
+
+        public Configurator swipeHorizontal(boolean swipeHorizontal) {
+            this.swipeHorizontal = swipeHorizontal;
+            return this;
+        }
+
+        public Configurator password(String password) {
+            this.password = password;
+            return this;
+        }
+
+        public Configurator scrollHandle(ScrollHandle scrollHandle) {
+            this.scrollHandle = scrollHandle;
+            return this;
+        }
+
+        public Configurator enableAntialiasing(boolean antialiasing) {
+            this.antialiasing = antialiasing;
+            return this;
+        }
+
+        public Configurator spacing(int spacing) {
+            this.spacing = spacing;
+            return this;
+        }
+
+        public Configurator autoSpacing(boolean autoSpacing) {
+            this.autoSpacing = autoSpacing;
+            return this;
+        }
+
+        public Configurator pageFitPolicy(FitPolicy pageFitPolicy) {
+            this.pageFitPolicy = pageFitPolicy;
+            return this;
+        }
+
+        public Configurator fitEachPage(boolean fitEachPage) {
+            this.fitEachPage = fitEachPage;
+            return this;
+        }
+
+        public Configurator pageSnap(boolean pageSnap) {
+            this.pageSnap = pageSnap;
+            return this;
+        }
+
+        public Configurator pageFling(boolean pageFling) {
+            this.pageFling = pageFling;
+            return this;
+        }
+
+        public Configurator nightMode(boolean nightMode) {
+            this.nightMode = nightMode;
+            return this;
+        }
+
+        public Configurator disableLongpress() {
+            PDFView.this.dragPinchManager.disableLongpress();
+            return this;
+        }
+
+        public void load() {
+            if (!hasSize) {
+                waitingDocumentConfigurator = this;
+                return;
+            }
+            PDFView.this.recycle();
+            PDFView.this.callbacks.setOnLoadComplete(onLoadCompleteListener);
+            PDFView.this.callbacks.setOnError(onErrorListener);
+            PDFView.this.callbacks.setOnDraw(onDrawListener);
+            PDFView.this.callbacks.setOnDrawAll(onDrawAllListener);
+            PDFView.this.callbacks.setOnPageChange(onPageChangeListener);
+            PDFView.this.callbacks.setOnPageScroll(onPageScrollListener);
+            PDFView.this.callbacks.setOnRender(onRenderListener);
+            PDFView.this.callbacks.setOnTap(onTapListener);
+            PDFView.this.callbacks.setOnLongPress(onLongPressListener);
+            PDFView.this.callbacks.setOnPageError(onPageErrorListener);
+            PDFView.this.callbacks.setLinkHandler(linkHandler);
+            PDFView.this.setSwipeEnabled(enableSwipe);
+            PDFView.this.setNightMode(nightMode);
+            PDFView.this.enableDoubletap(enableDoubletap);
+            PDFView.this.setDefaultPage(defaultPage);
+            PDFView.this.setLandscapeOrientation(landscapeOrientation);
+            PDFView.this.setDualPageMode(dualPageMode);
+            PDFView.this.setSwipeVertical(!swipeHorizontal);
+            PDFView.this.enableAnnotationRendering(annotationRendering);
+            PDFView.this.setScrollHandle(scrollHandle);
+            PDFView.this.enableAntialiasing(antialiasing);
+            PDFView.this.setSpacing(spacing);
+            PDFView.this.setAutoSpacing(autoSpacing);
+            PDFView.this.setPageFitPolicy(pageFitPolicy);
+            PDFView.this.setFitEachPage(fitEachPage);
+            PDFView.this.setPageSnap(pageSnap);
+            PDFView.this.setPageFling(pageFling);
+
+            if (pageNumbers != null) {
+                PDFView.this.load(documentSource, password, pageNumbers);
+            } else {
+                PDFView.this.load(documentSource, password);
+            }
+        }
+    }
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
index 70be2cc0..26c30f4b 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PagesLoader.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer;
+package com.github.barteksc.pdfviewer;
 
 import android.graphics.RectF;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
index 01ce993f..3610bcbb 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PdfFile.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer;
+package com.github.barteksc.pdfviewer;
 
 import android.graphics.Bitmap;
 import android.graphics.Rect;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
index eb6fce44..aa9471fa 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/RenderingHandler.java
@@ -1,161 +1,161 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer;
-
-import android.graphics.Bitmap;
-import android.graphics.Color;
-import android.graphics.Matrix;
-import android.graphics.Rect;
-import android.graphics.RectF;
-import android.os.Handler;
-import android.os.Looper;
-import android.os.Message;
-import android.util.Log;
-
-import com.github.barteksc.pdfviewer.exception.PageRenderingException;
-import com.github.barteksc.pdfviewer.model.PagePart;
-
-/**
- * A {@link Handler} that will process incoming {@link RenderingTask} messages
- * and alert {@link PDFView#onBitmapRendered(PagePart)} when the portion of the
- * PDF is ready to render.
- */
-class RenderingHandler extends Handler {
-    /**
-     * {@link Message#what} kind of message this handler processes.
-     */
-    static final int MSG_RENDER_TASK = 1;
-
-    private static final String TAG = RenderingHandler.class.getName();
-
-    private PDFView pdfView;
-
-    private RectF renderBounds = new RectF();
-    private Rect roundedRenderBounds = new Rect();
-    private Matrix renderMatrix = new Matrix();
-    private boolean running = false;
-
-    RenderingHandler(Looper looper, PDFView pdfView) {
-        super(looper);
-        this.pdfView = pdfView;
-    }
-
-    void addRenderingTask(int page, float width, float height, RectF bounds, boolean thumbnail, int cacheOrder, boolean bestQuality, boolean annotationRendering) {
-        RenderingTask task = new RenderingTask(width, height, bounds, page, thumbnail, cacheOrder, bestQuality, annotationRendering);
-        Message msg = obtainMessage(MSG_RENDER_TASK, task);
-        sendMessage(msg);
-    }
-
-    @Override
-    public void handleMessage(Message message) {
-        RenderingTask task = (RenderingTask) message.obj;
-        try {
-            final PagePart part = proceed(task);
-            if (part != null) {
-                if (running) {
-                    pdfView.post(new Runnable() {
-                        @Override
-                        public void run() {
-                            pdfView.onBitmapRendered(part);
-                        }
-                    });
-                } else {
-                    part.getRenderedBitmap().recycle();
-                }
-            }
-        } catch (final PageRenderingException ex) {
-            pdfView.post(new Runnable() {
-                @Override
-                public void run() {
-                    pdfView.onPageError(ex);
-                }
-            });
-        }
-    }
-
-    private PagePart proceed(RenderingTask renderingTask) throws PageRenderingException {
-        PdfFile pdfFile = pdfView.pdfFile;
-        pdfFile.openPage(renderingTask.page);
-
-        int w = Math.round(renderingTask.width);
-        int h = Math.round(renderingTask.height);
-
-        if (w == 0 || h == 0 || pdfFile.pageHasError(renderingTask.page)) {
-            return null;
-        }
-
-        Bitmap render;
-        try {
-            render = Bitmap.createBitmap(w, h, renderingTask.bestQuality ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);
-        } catch (IllegalArgumentException e) {
-            Log.e(TAG, "Cannot create bitmap", e);
-            return null;
-        }
-        calculateBounds(w, h, renderingTask.bounds);
-
-        pdfFile.renderPageBitmap(render, renderingTask.page, roundedRenderBounds, renderingTask.annotationRendering);
-
-        return new PagePart(renderingTask.page, render,
-                renderingTask.bounds, renderingTask.thumbnail,
-                renderingTask.cacheOrder);
-    }
-
-    private void calculateBounds(int width, int height, RectF pageSliceBounds) {
-        renderMatrix.reset();
-        renderMatrix.postTranslate(-pageSliceBounds.left * width, -pageSliceBounds.top * height);
-        renderMatrix.postScale(1 / pageSliceBounds.width(), 1 / pageSliceBounds.height());
-
-        renderBounds.set(0, 0, width, height);
-        renderMatrix.mapRect(renderBounds);
-        renderBounds.round(roundedRenderBounds);
-    }
-
-    void stop() {
-        running = false;
-    }
-
-    void start() {
-        running = true;
-    }
-
-    private class RenderingTask {
-
-        float width, height;
-
-        RectF bounds;
-
-        int page;
-
-        boolean thumbnail;
-
-        int cacheOrder;
-
-        boolean bestQuality;
-
-        boolean annotationRendering;
-
-        RenderingTask(float width, float height, RectF bounds, int page, boolean thumbnail, int cacheOrder, boolean bestQuality, boolean annotationRendering) {
-            this.page = page;
-            this.width = width;
-            this.height = height;
-            this.bounds = bounds;
-            this.thumbnail = thumbnail;
-            this.cacheOrder = cacheOrder;
-            this.bestQuality = bestQuality;
-            this.annotationRendering = annotationRendering;
-        }
-    }
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer;
+
+import android.graphics.Bitmap;
+import android.graphics.Color;
+import android.graphics.Matrix;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
+import android.util.Log;
+
+import com.github.barteksc.pdfviewer.exception.PageRenderingException;
+import com.github.barteksc.pdfviewer.model.PagePart;
+
+/**
+ * A {@link Handler} that will process incoming {@link RenderingTask} messages
+ * and alert {@link PDFView#onBitmapRendered(PagePart)} when the portion of the
+ * PDF is ready to render.
+ */
+class RenderingHandler extends Handler {
+    /**
+     * {@link Message#what} kind of message this handler processes.
+     */
+    static final int MSG_RENDER_TASK = 1;
+
+    private static final String TAG = RenderingHandler.class.getName();
+
+    private PDFView pdfView;
+
+    private RectF renderBounds = new RectF();
+    private Rect roundedRenderBounds = new Rect();
+    private Matrix renderMatrix = new Matrix();
+    private boolean running = false;
+
+    RenderingHandler(Looper looper, PDFView pdfView) {
+        super(looper);
+        this.pdfView = pdfView;
+    }
+
+    void addRenderingTask(int page, float width, float height, RectF bounds, boolean thumbnail, int cacheOrder, boolean bestQuality, boolean annotationRendering) {
+        RenderingTask task = new RenderingTask(width, height, bounds, page, thumbnail, cacheOrder, bestQuality, annotationRendering);
+        Message msg = obtainMessage(MSG_RENDER_TASK, task);
+        sendMessage(msg);
+    }
+
+    @Override
+    public void handleMessage(Message message) {
+        RenderingTask task = (RenderingTask) message.obj;
+        try {
+            final PagePart part = proceed(task);
+            if (part != null) {
+                if (running) {
+                    pdfView.post(new Runnable() {
+                        @Override
+                        public void run() {
+                            pdfView.onBitmapRendered(part);
+                        }
+                    });
+                } else {
+                    part.getRenderedBitmap().recycle();
+                }
+            }
+        } catch (final PageRenderingException ex) {
+            pdfView.post(new Runnable() {
+                @Override
+                public void run() {
+                    pdfView.onPageError(ex);
+                }
+            });
+        }
+    }
+
+    private PagePart proceed(RenderingTask renderingTask) throws PageRenderingException {
+        PdfFile pdfFile = pdfView.pdfFile;
+        pdfFile.openPage(renderingTask.page);
+
+        int w = Math.round(renderingTask.width);
+        int h = Math.round(renderingTask.height);
+
+        if (w == 0 || h == 0 || pdfFile.pageHasError(renderingTask.page)) {
+            return null;
+        }
+
+        Bitmap render;
+        try {
+            render = Bitmap.createBitmap(w, h, renderingTask.bestQuality ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Cannot create bitmap", e);
+            return null;
+        }
+        calculateBounds(w, h, renderingTask.bounds);
+
+        pdfFile.renderPageBitmap(render, renderingTask.page, roundedRenderBounds, renderingTask.annotationRendering);
+
+        return new PagePart(renderingTask.page, render,
+                renderingTask.bounds, renderingTask.thumbnail,
+                renderingTask.cacheOrder);
+    }
+
+    private void calculateBounds(int width, int height, RectF pageSliceBounds) {
+        renderMatrix.reset();
+        renderMatrix.postTranslate(-pageSliceBounds.left * width, -pageSliceBounds.top * height);
+        renderMatrix.postScale(1 / pageSliceBounds.width(), 1 / pageSliceBounds.height());
+
+        renderBounds.set(0, 0, width, height);
+        renderMatrix.mapRect(renderBounds);
+        renderBounds.round(roundedRenderBounds);
+    }
+
+    void stop() {
+        running = false;
+    }
+
+    void start() {
+        running = true;
+    }
+
+    private class RenderingTask {
+
+        float width, height;
+
+        RectF bounds;
+
+        int page;
+
+        boolean thumbnail;
+
+        int cacheOrder;
+
+        boolean bestQuality;
+
+        boolean annotationRendering;
+
+        RenderingTask(float width, float height, RectF bounds, int page, boolean thumbnail, int cacheOrder, boolean bestQuality, boolean annotationRendering) {
+            this.page = page;
+            this.width = width;
+            this.height = height;
+            this.bounds = bounds;
+            this.thumbnail = thumbnail;
+            this.cacheOrder = cacheOrder;
+            this.bestQuality = bestQuality;
+            this.annotationRendering = annotationRendering;
+        }
+    }
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
index db341137..f0fc6f80 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/FileNotFoundException.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.exception;
+package com.github.barteksc.pdfviewer.exception;
 
 @Deprecated
 public class FileNotFoundException extends RuntimeException {
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
index fa459059..b6ff2b89 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/exception/PageRenderingException.java
@@ -1,4 +1,4 @@
-package android.lib.pdfviewer.exception;
+package com.github.barteksc.pdfviewer.exception;
 
 public class PageRenderingException extends Exception {
     private final int page;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
index 018b67ec..0849da38 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/DefaultLinkHandler.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.link;
+package com.github.barteksc.pdfviewer.link;
 
 import android.content.Context;
 import android.content.Intent;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
index 5ea3ba9e..f09dc11e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/link/LinkHandler.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.link;
+package com.github.barteksc.pdfviewer.link;
 
 import com.github.barteksc.pdfviewer.model.LinkTapEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
index f0a97436..09becb1c 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/Callbacks.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
index 189c05bf..a318ebb6 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnDrawListener.java
@@ -1,38 +1,38 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.listener;
-
-import android.graphics.Canvas;
-
-/**
- * This interface allows an extern class to draw
- * something on the PDFView canvas, above all images.
- */
-public interface OnDrawListener {
-
-    /**
-     * This method is called when the PDFView is
-     * drawing its view.
-     * <p>
-     * The page is starting at (0,0)
-     *
-     * @param canvas        The canvas on which to draw things.
-     * @param pageWidth     The width of the current page.
-     * @param pageHeight    The height of the current page.
-     * @param displayedPage The current page index
-     */
-    void onLayerDrawn(Canvas canvas, float pageWidth, float pageHeight, int displayedPage);
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.listener;
+
+import android.graphics.Canvas;
+
+/**
+ * This interface allows an extern class to draw
+ * something on the PDFView canvas, above all images.
+ */
+public interface OnDrawListener {
+
+    /**
+     * This method is called when the PDFView is
+     * drawing its view.
+     * <p>
+     * The page is starting at (0,0)
+     *
+     * @param canvas        The canvas on which to draw things.
+     * @param pageWidth     The width of the current page.
+     * @param pageHeight    The height of the current page.
+     * @param displayedPage The current page index
+     */
+    void onLayerDrawn(Canvas canvas, float pageWidth, float pageHeight, int displayedPage);
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
index 45becf9d..876bacfc 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnErrorListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 public interface OnErrorListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
index d5cd970f..a52cbc92 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLoadCompleteListener.java
@@ -1,29 +1,29 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.listener;
-
-/**
- * Implement this interface to receive events from PDFView
- * when loading is complete.
- */
-public interface OnLoadCompleteListener {
-
-    /**
-     * Called when the PDF is loaded
-     * @param nbPages the number of pages in this PDF file
-     */
-    void loadComplete(int nbPages);
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.listener;
+
+/**
+ * Implement this interface to receive events from PDFView
+ * when loading is complete.
+ */
+public interface OnLoadCompleteListener {
+
+    /**
+     * Called when the PDF is loaded
+     * @param nbPages the number of pages in this PDF file
+     */
+    void loadComplete(int nbPages);
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
index 052f9703..fc94c726 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnLongPressListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
index 4fd4432e..0945ca8e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageChangeListener.java
@@ -1,32 +1,32 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.listener;
-
-/**
- * Implements this interface to receive events from PDFView
- * when a page has changed through swipe
- */
-public interface OnPageChangeListener {
-
-    /**
-     * Called when the user use swipe to change page
-     *
-     * @param page      the new page displayed, starting from 0
-     * @param pageCount the total page count
-     */
-    void onPageChanged(int page, int pageCount);
-
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.listener;
+
+/**
+ * Implements this interface to receive events from PDFView
+ * when a page has changed through swipe
+ */
+public interface OnPageChangeListener {
+
+    /**
+     * Called when the user use swipe to change page
+     *
+     * @param page      the new page displayed, starting from 0
+     * @param pageCount the total page count
+     */
+    void onPageChanged(int page, int pageCount);
+
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
index 40a4de38..3fb38a2e 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageErrorListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 public interface OnPageErrorListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
index 521eba5c..6eda1fd1 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnPageScrollListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 /**
  * Implements this interface to receive events from PDFView
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
index d3e209fe..99982497 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnRenderListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 public interface OnRenderListener {
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
index 6adc13ed..081a3a26 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/listener/OnTapListener.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.listener;
+package com.github.barteksc.pdfviewer.listener;
 
 import android.view.MotionEvent;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
index 660b70e3..7e72bdd3 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/LinkTapEvent.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.model;
+package com.github.barteksc.pdfviewer.model;
 
 import android.graphics.RectF;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
index e1d03c0b..19a2186f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/model/PagePart.java
@@ -1,80 +1,80 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.model;
-
-import android.graphics.Bitmap;
-import android.graphics.RectF;
-
-public class PagePart {
-
-    private int page;
-
-    private Bitmap renderedBitmap;
-
-    private RectF pageRelativeBounds;
-
-    private boolean thumbnail;
-
-    private int cacheOrder;
-
-    public PagePart(int page, Bitmap renderedBitmap, RectF pageRelativeBounds, boolean thumbnail, int cacheOrder) {
-        super();
-        this.page = page;
-        this.renderedBitmap = renderedBitmap;
-        this.pageRelativeBounds = pageRelativeBounds;
-        this.thumbnail = thumbnail;
-        this.cacheOrder = cacheOrder;
-    }
-
-    public int getCacheOrder() {
-        return cacheOrder;
-    }
-
-    public int getPage() {
-        return page;
-    }
-
-    public Bitmap getRenderedBitmap() {
-        return renderedBitmap;
-    }
-
-    public RectF getPageRelativeBounds() {
-        return pageRelativeBounds;
-    }
-
-    public boolean isThumbnail() {
-        return thumbnail;
-    }
-
-    public void setCacheOrder(int cacheOrder) {
-        this.cacheOrder = cacheOrder;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (!(obj instanceof PagePart)) {
-            return false;
-        }
-
-        PagePart part = (PagePart) obj;
-        return part.getPage() == page
-                && part.getPageRelativeBounds().left == pageRelativeBounds.left
-                && part.getPageRelativeBounds().right == pageRelativeBounds.right
-                && part.getPageRelativeBounds().top == pageRelativeBounds.top
-                && part.getPageRelativeBounds().bottom == pageRelativeBounds.bottom;
-    }
-
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.model;
+
+import android.graphics.Bitmap;
+import android.graphics.RectF;
+
+public class PagePart {
+
+    private int page;
+
+    private Bitmap renderedBitmap;
+
+    private RectF pageRelativeBounds;
+
+    private boolean thumbnail;
+
+    private int cacheOrder;
+
+    public PagePart(int page, Bitmap renderedBitmap, RectF pageRelativeBounds, boolean thumbnail, int cacheOrder) {
+        super();
+        this.page = page;
+        this.renderedBitmap = renderedBitmap;
+        this.pageRelativeBounds = pageRelativeBounds;
+        this.thumbnail = thumbnail;
+        this.cacheOrder = cacheOrder;
+    }
+
+    public int getCacheOrder() {
+        return cacheOrder;
+    }
+
+    public int getPage() {
+        return page;
+    }
+
+    public Bitmap getRenderedBitmap() {
+        return renderedBitmap;
+    }
+
+    public RectF getPageRelativeBounds() {
+        return pageRelativeBounds;
+    }
+
+    public boolean isThumbnail() {
+        return thumbnail;
+    }
+
+    public void setCacheOrder(int cacheOrder) {
+        this.cacheOrder = cacheOrder;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof PagePart)) {
+            return false;
+        }
+
+        PagePart part = (PagePart) obj;
+        return part.getPage() == page
+                && part.getPageRelativeBounds().left == pageRelativeBounds.left
+                && part.getPageRelativeBounds().right == pageRelativeBounds.right
+                && part.getPageRelativeBounds().top == pageRelativeBounds.top
+                && part.getPageRelativeBounds().bottom == pageRelativeBounds.bottom;
+    }
+
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
index 957adfc0..42c1feab 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/DefaultScrollHandle.java
@@ -1,4 +1,4 @@
-package android.lib.pdfviewer.scroll;
+package com.github.barteksc.pdfviewer.scroll;
 
 import android.content.Context;
 import android.graphics.Color;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
index 8cf886c1..b58de5a4 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/scroll/ScrollHandle.java
@@ -1,4 +1,4 @@
-package android.lib.pdfviewer.scroll;
+package com.github.barteksc.pdfviewer.scroll;
 
 import com.github.barteksc.pdfviewer.PDFView;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
index e82c48c5..3e24e204 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/AssetSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 
 import android.content.Context;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
index 38a72984..245c78fc 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/ByteArraySource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
index 2938d4f1..4c76c5ab 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/DocumentSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
index ea09e9fa..cfe092c8 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/FileSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 import android.content.Context;
 import android.os.ParcelFileDescriptor;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
index bdcae2f4..26e60a8d 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/InputStreamSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
index a4014f7b..15215f0c 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/source/UriSource.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.source;
+package com.github.barteksc.pdfviewer.source;
 
 import android.content.Context;
 import android.net.Uri;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
index a390dd9e..3fb887d6 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/ArrayUtils.java
@@ -1,74 +1,74 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.util;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class ArrayUtils {
-
-    private ArrayUtils() {
-        // Prevents instantiation
-    }
-
-    /** Transforms (0,1,2,2,3) to (0,1,2,3) */
-    public static int[] deleteDuplicatedPages(int[] pages) {
-        List<Integer> result = new ArrayList<>();
-        int lastInt = -1;
-        for (Integer currentInt : pages) {
-            if (lastInt != currentInt) {
-                result.add(currentInt);
-            }
-            lastInt = currentInt;
-        }
-        int[] arrayResult = new int[result.size()];
-        for (int i = 0; i < result.size(); i++) {
-            arrayResult[i] = result.get(i);
-        }
-        return arrayResult;
-    }
-
-    /** Transforms (0, 4, 4, 6, 6, 6, 3) into (0, 1, 1, 2, 2, 2, 3) */
-    public static int[] calculateIndexesInDuplicateArray(int[] originalUserPages) {
-        int[] result = new int[originalUserPages.length];
-        if (originalUserPages.length == 0) {
-            return result;
-        }
-
-        int index = 0;
-        result[0] = index;
-        for (int i = 1; i < originalUserPages.length; i++) {
-            if (originalUserPages[i] != originalUserPages[i - 1]) {
-                index++;
-            }
-            result[i] = index;
-        }
-
-        return result;
-    }
-
-    public static String arrayToString(int[] array) {
-        StringBuilder builder = new StringBuilder("[");
-        for (int i = 0; i < array.length; i++) {
-            builder.append(array[i]);
-            if (i != array.length - 1) {
-                builder.append(",");
-            }
-        }
-        builder.append("]");
-        return builder.toString();
-    }
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ArrayUtils {
+
+    private ArrayUtils() {
+        // Prevents instantiation
+    }
+
+    /** Transforms (0,1,2,2,3) to (0,1,2,3) */
+    public static int[] deleteDuplicatedPages(int[] pages) {
+        List<Integer> result = new ArrayList<>();
+        int lastInt = -1;
+        for (Integer currentInt : pages) {
+            if (lastInt != currentInt) {
+                result.add(currentInt);
+            }
+            lastInt = currentInt;
+        }
+        int[] arrayResult = new int[result.size()];
+        for (int i = 0; i < result.size(); i++) {
+            arrayResult[i] = result.get(i);
+        }
+        return arrayResult;
+    }
+
+    /** Transforms (0, 4, 4, 6, 6, 6, 3) into (0, 1, 1, 2, 2, 2, 3) */
+    public static int[] calculateIndexesInDuplicateArray(int[] originalUserPages) {
+        int[] result = new int[originalUserPages.length];
+        if (originalUserPages.length == 0) {
+            return result;
+        }
+
+        int index = 0;
+        result[0] = index;
+        for (int i = 1; i < originalUserPages.length; i++) {
+            if (originalUserPages[i] != originalUserPages[i - 1]) {
+                index++;
+            }
+            result[i] = index;
+        }
+
+        return result;
+    }
+
+    public static String arrayToString(int[] array) {
+        StringBuilder builder = new StringBuilder("[");
+        for (int i = 0; i < array.length; i++) {
+            builder.append(array[i]);
+            if (i != array.length - 1) {
+                builder.append(",");
+            }
+        }
+        builder.append("]");
+        return builder.toString();
+    }
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
index 79de4842..bea7e1b6 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Constants.java
@@ -1,51 +1,51 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.util;
-
-public class Constants {
-
-    public static boolean DEBUG_MODE = false;
-
-    /** Between 0 and 1, the thumbnails quality (default 0.3). Increasing this value may cause performance decrease */
-    public static float THUMBNAIL_RATIO = 0.3f;
-
-    /**
-     * The size of the rendered parts (default 256)
-     * Tinier : a little bit slower to have the whole page rendered but more reactive.
-     * Bigger : user will have to wait longer to have the first visual results
-     */
-    public static float PART_SIZE = 256;
-
-    /** Part of document above and below screen that should be preloaded, in dp */
-    public static int PRELOAD_OFFSET = 20;
-
-    public static class Cache {
-
-        /** The size of the cache (number of bitmaps kept) */
-        public static int CACHE_SIZE = 120;
-
-        public static int THUMBNAILS_CACHE_SIZE = 8;
-    }
-
-    public static class Pinch {
-
-        public static float MAXIMUM_ZOOM = 10;
-
-        public static float MINIMUM_ZOOM = 1;
-
-    }
-
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.util;
+
+public class Constants {
+
+    public static boolean DEBUG_MODE = false;
+
+    /** Between 0 and 1, the thumbnails quality (default 0.3). Increasing this value may cause performance decrease */
+    public static float THUMBNAIL_RATIO = 0.3f;
+
+    /**
+     * The size of the rendered parts (default 256)
+     * Tinier : a little bit slower to have the whole page rendered but more reactive.
+     * Bigger : user will have to wait longer to have the first visual results
+     */
+    public static float PART_SIZE = 256;
+
+    /** Part of document above and below screen that should be preloaded, in dp */
+    public static int PRELOAD_OFFSET = 20;
+
+    public static class Cache {
+
+        /** The size of the cache (number of bitmaps kept) */
+        public static int CACHE_SIZE = 120;
+
+        public static int THUMBNAILS_CACHE_SIZE = 8;
+    }
+
+    public static class Pinch {
+
+        public static float MAXIMUM_ZOOM = 10;
+
+        public static float MINIMUM_ZOOM = 1;
+
+    }
+
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
index 0dc054e5..0aa325e9 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FileUtils.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.util;
+package com.github.barteksc.pdfviewer.util;
 
 import android.content.Context;
 
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
index 21f0365f..6e90dd55 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/FitPolicy.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.util;
+package com.github.barteksc.pdfviewer.util;
 
 public enum FitPolicy {
     WIDTH, HEIGHT, BOTH
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
index dfcdcc71..8d9b224f 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/MathUtils.java
@@ -1,105 +1,105 @@
-/**
- * Copyright 2016 Bartosz Schiller
- * <p/>
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * <p/>
- * http://www.apache.org/licenses/LICENSE-2.0
- * <p/>
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package android.lib.pdfviewer.util;
-
-public class MathUtils {
-
-    static private final int BIG_ENOUGH_INT = 16 * 1024;
-    static private final double BIG_ENOUGH_FLOOR = BIG_ENOUGH_INT;
-    static private final double BIG_ENOUGH_CEIL = 16384.999999999996;
-
-    private MathUtils() {
-        // Prevents instantiation
-    }
-
-    /**
-     * Limits the given <b>number</b> between the other values
-     * @param number  The number to limit.
-     * @param between The smallest value the number can take.
-     * @param and     The biggest value the number can take.
-     * @return The limited number.
-     */
-    public static int limit(int number, int between, int and) {
-        if (number <= between) {
-            return between;
-        }
-        if (number >= and) {
-            return and;
-        }
-        return number;
-    }
-
-    /**
-     * Limits the given <b>number</b> between the other values
-     * @param number  The number to limit.
-     * @param between The smallest value the number can take.
-     * @param and     The biggest value the number can take.
-     * @return The limited number.
-     */
-    public static float limit(float number, float between, float and) {
-        if (number <= between) {
-            return between;
-        }
-        if (number >= and) {
-            return and;
-        }
-        return number;
-    }
-
-    public static float max(float number, float max) {
-        if (number > max) {
-            return max;
-        }
-        return number;
-    }
-
-    public static float min(float number, float min) {
-        if (number < min) {
-            return min;
-        }
-        return number;
-    }
-
-    public static int max(int number, int max) {
-        if (number > max) {
-            return max;
-        }
-        return number;
-    }
-
-    public static int min(int number, int min) {
-        if (number < min) {
-            return min;
-        }
-        return number;
-    }
-
-    /**
-     * Methods from libGDX - https://github.com/libgdx/libgdx
-     */
-
-    /** Returns the largest integer less than or equal to the specified float. This method will only properly floor floats from
-     * -(2^14) to (Float.MAX_VALUE - 2^14). */
-    static public int floor(float value) {
-        return (int) (value + BIG_ENOUGH_FLOOR) - BIG_ENOUGH_INT;
-    }
-
-    /** Returns the smallest integer greater than or equal to the specified float. This method will only properly ceil floats from
-     * -(2^14) to (Float.MAX_VALUE - 2^14). */
-    static public int ceil(float value) {
-        return (int) (value + BIG_ENOUGH_CEIL) - BIG_ENOUGH_INT;
-    }
-}
+/**
+ * Copyright 2016 Bartosz Schiller
+ * <p/>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.barteksc.pdfviewer.util;
+
+public class MathUtils {
+
+    static private final int BIG_ENOUGH_INT = 16 * 1024;
+    static private final double BIG_ENOUGH_FLOOR = BIG_ENOUGH_INT;
+    static private final double BIG_ENOUGH_CEIL = 16384.999999999996;
+
+    private MathUtils() {
+        // Prevents instantiation
+    }
+
+    /**
+     * Limits the given <b>number</b> between the other values
+     * @param number  The number to limit.
+     * @param between The smallest value the number can take.
+     * @param and     The biggest value the number can take.
+     * @return The limited number.
+     */
+    public static int limit(int number, int between, int and) {
+        if (number <= between) {
+            return between;
+        }
+        if (number >= and) {
+            return and;
+        }
+        return number;
+    }
+
+    /**
+     * Limits the given <b>number</b> between the other values
+     * @param number  The number to limit.
+     * @param between The smallest value the number can take.
+     * @param and     The biggest value the number can take.
+     * @return The limited number.
+     */
+    public static float limit(float number, float between, float and) {
+        if (number <= between) {
+            return between;
+        }
+        if (number >= and) {
+            return and;
+        }
+        return number;
+    }
+
+    public static float max(float number, float max) {
+        if (number > max) {
+            return max;
+        }
+        return number;
+    }
+
+    public static float min(float number, float min) {
+        if (number < min) {
+            return min;
+        }
+        return number;
+    }
+
+    public static int max(int number, int max) {
+        if (number > max) {
+            return max;
+        }
+        return number;
+    }
+
+    public static int min(int number, int min) {
+        if (number < min) {
+            return min;
+        }
+        return number;
+    }
+
+    /**
+     * Methods from libGDX - https://github.com/libgdx/libgdx
+     */
+
+    /** Returns the largest integer less than or equal to the specified float. This method will only properly floor floats from
+     * -(2^14) to (Float.MAX_VALUE - 2^14). */
+    static public int floor(float value) {
+        return (int) (value + BIG_ENOUGH_FLOOR) - BIG_ENOUGH_INT;
+    }
+
+    /** Returns the smallest integer greater than or equal to the specified float. This method will only properly ceil floats from
+     * -(2^14) to (Float.MAX_VALUE - 2^14). */
+    static public int ceil(float value) {
+        return (int) (value + BIG_ENOUGH_CEIL) - BIG_ENOUGH_INT;
+    }
+}
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
index d8fbc712..e7f35a3b 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/PageSizeCalculator.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.util;
+package com.github.barteksc.pdfviewer.util;
 
 import android.app.Activity;
 import android.util.Log;
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
index b419a950..e2e73ab7 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/SnapEdge.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.util;
+package com.github.barteksc.pdfviewer.util;
 
 public enum SnapEdge {
     START, CENTER, END, NONE
diff --git a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
index 0d8dff09..58e473e0 100644
--- a/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
+++ b/android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/util/Util.java
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package android.lib.pdfviewer.util;
+package com.github.barteksc.pdfviewer.util;
 
 import android.content.Context;
 import android.util.TypedValue;

From fa43c89c227b1c66168ba4e981bd00b7378fcb62 Mon Sep 17 00:00:00 2001
From: Arnaud Delubac <arnaud.delubac@interactiu.cat>
Date: Thu, 19 Dec 2019 11:49:33 +0100
Subject: [PATCH 4/5] updating gradle tool

---
 build.gradle | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build.gradle b/build.gradle
index 0a9a0ba0..03a38f03 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.2'
+        classpath 'com.android.tools.build:gradle:3.5.2'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
     }

From 2d54d51d19f9cca4432f4626d2cf7b8406e6e2d2 Mon Sep 17 00:00:00 2001
From: Arnaud Delubac <arnaud.delubac@interactiu.cat>
Date: Fri, 20 Dec 2019 08:52:32 +0100
Subject: [PATCH 5/5] Fixing compilation issue because of gradle version

---
 build.gradle                                 | 4 ++--
 gradle/wrapper/gradle-wrapper.properties     | 2 +-
 sample/src/main/res/layout/activity_main.xml | 8 ++++----
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/build.gradle b/build.gradle
index 03a38f03..cddca95e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.2'
+        classpath 'com.android.tools.build:gradle:3.4.2'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
     }
@@ -16,4 +16,4 @@ allprojects {
         google()
         jcenter()
     }
-}
+}
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 1a59b22b..285c4261 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
diff --git a/sample/src/main/res/layout/activity_main.xml b/sample/src/main/res/layout/activity_main.xml
index a14dd73d..fb1cf589 100644
--- a/sample/src/main/res/layout/activity_main.xml
+++ b/sample/src/main/res/layout/activity_main.xml
@@ -3,9 +3,9 @@
 	android:layout_width="match_parent"
 	android:layout_height="match_parent">
 
-    <com.github.barteksc.pdfviewer.PDFView
-        android:id="@+id/pdfView"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+	<com.github.barteksc.pdfviewer.PDFView
+		android:id="@+id/pdfView"
+		android:layout_width="match_parent"
+		android:layout_height="match_parent" />
 
 </RelativeLayout>
\ No newline at end of file