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Merge pull request #21 from andriyoganp/fix/webcontent-converter-plat…
…form-channel fix: content to image native code
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,3 +1,7 @@ | ||
| ## 0.0.8 | ||
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| * Add native code to convert content image | ||
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| ## 0.0.7 | ||
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| * Add parameter option to generate image as raster | ||
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175 changes: 150 additions & 25 deletions
175
android/src/main/kotlin/com/ayeee/blue_print_pos/BluePrintPosPlugin.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,36 +1,161 @@ | ||
| package com.ayeee.blue_print_pos | ||
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| import android.app.Activity | ||
| import android.content.Context | ||
| import android.graphics.Bitmap | ||
| import android.graphics.Canvas | ||
| import android.os.Build | ||
| import android.os.Handler | ||
| import android.os.Looper | ||
| import android.view.View | ||
| import android.view.WindowInsets | ||
| import android.webkit.WebView | ||
| import android.webkit.WebViewClient | ||
| import androidx.annotation.NonNull | ||
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| import io.flutter.embedding.engine.plugins.FlutterPlugin | ||
| import io.flutter.embedding.engine.plugins.activity.ActivityAware | ||
| import io.flutter.embedding.engine.plugins.activity.ActivityPluginBinding | ||
| import io.flutter.plugin.common.MethodCall | ||
| import io.flutter.plugin.common.MethodChannel | ||
| import io.flutter.plugin.common.MethodChannel.MethodCallHandler | ||
| import io.flutter.plugin.common.MethodChannel.Result | ||
| import io.flutter.plugin.common.PluginRegistry.Registrar | ||
| import java.io.ByteArrayOutputStream | ||
| import kotlin.math.absoluteValue | ||
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| /** BluePrintPosPlugin */ | ||
| class BluePrintPosPlugin: FlutterPlugin, MethodCallHandler { | ||
| /// The MethodChannel that will the communication between Flutter and native Android | ||
| /// | ||
| /// This local reference serves to register the plugin with the Flutter Engine and unregister it | ||
| /// when the Flutter Engine is detached from the Activity | ||
| private lateinit var channel : MethodChannel | ||
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| override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) { | ||
| channel = MethodChannel(flutterPluginBinding.binaryMessenger, "blue_print_pos") | ||
| channel.setMethodCallHandler(this) | ||
| } | ||
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| override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) { | ||
| if (call.method == "getPlatformVersion") { | ||
| result.success("Android ${android.os.Build.VERSION.RELEASE}") | ||
| } else { | ||
| result.notImplemented() | ||
| } | ||
| } | ||
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| override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) { | ||
| channel.setMethodCallHandler(null) | ||
| } | ||
| class BluePrintPosPlugin : FlutterPlugin, MethodCallHandler, ActivityAware { | ||
| /// The MethodChannel that will the communication between Flutter and native Android | ||
| /// | ||
| /// This local reference serves to register the plugin with the Flutter Engine and unregister it | ||
| /// when the Flutter Engine is detached from the Activity | ||
| private lateinit var channel: MethodChannel | ||
| private lateinit var activity: Activity | ||
| private lateinit var context: Context | ||
| private lateinit var webView: WebView | ||
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| override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) { | ||
| val viewID = "webview-view-type" | ||
| flutterPluginBinding.platformViewRegistry.registerViewFactory(viewID, FLNativeViewFactory()) | ||
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| channel = MethodChannel(flutterPluginBinding.binaryMessenger, "blue_print_pos") | ||
| channel.setMethodCallHandler(this) | ||
| context = flutterPluginBinding.applicationContext | ||
| } | ||
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| override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) { | ||
| val arguments = call.arguments as Map<*, *> | ||
| val content = arguments["content"] as String | ||
| val duration = arguments["duration"] as Double? | ||
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| if (call.method == "contentToImage") { | ||
| webView = WebView(this.context) | ||
| val dWidth: Int | ||
| val dHeight: Int | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { | ||
| val windowMetrics = activity.windowManager.currentWindowMetrics | ||
| val insets = windowMetrics.windowInsets.getInsetsIgnoringVisibility(WindowInsets.Type.systemBars()) | ||
| dWidth = windowMetrics.bounds.width() - insets.left - insets.right | ||
| dHeight = windowMetrics.bounds.height() - insets.bottom - insets.top | ||
| } else { | ||
| dWidth = this.activity.window.windowManager.defaultDisplay.width | ||
| dHeight = this.activity.window.windowManager.defaultDisplay.height | ||
| } | ||
| print("\ndwidth : $dWidth") | ||
| print("\ndheight : $dHeight") | ||
| webView.layout(0, 0, dWidth, dHeight) | ||
| webView.loadDataWithBaseURL(null, content, "text/HTML", "UTF-8", null) | ||
| webView.setInitialScale(1) | ||
| webView.settings.javaScriptEnabled = true | ||
| webView.settings.useWideViewPort = true | ||
| webView.settings.javaScriptCanOpenWindowsAutomatically = true | ||
| webView.settings.loadWithOverviewMode = true | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { | ||
| print("\n=======> enabled scrolled <=========") | ||
| WebView.enableSlowWholeDocumentDraw() | ||
| } | ||
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| print("\n ///////////////// webview setted /////////////////") | ||
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| webView.webViewClient = object : WebViewClient() { | ||
| override fun onPageFinished(view: WebView, url: String) { | ||
| super.onPageFinished(view, url) | ||
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| Handler(Looper.getMainLooper()).postDelayed({ | ||
| print("\nOS Version: ${Build.VERSION.SDK_INT}") | ||
| print("\n ================ webview completed ==============") | ||
| print("\n scroll delayed ${webView.scrollBarFadeDuration}") | ||
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| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { | ||
| webView.evaluateJavascript("document.body.offsetWidth") { offsetWidth -> | ||
| webView.evaluateJavascript("document.body.offsetHeight") { offsetHeight -> | ||
| print("\noffsetWidth : $offsetWidth") | ||
| print("\noffsetHeight : $offsetHeight") | ||
| val data = webView.toBitmap( | ||
| offsetWidth!!.toDouble(), | ||
| offsetHeight!!.toDouble() | ||
| ) | ||
| if (data != null) { | ||
| val bytes = data.toByteArray() | ||
| result.success(bytes) | ||
| println("\n Got snapshot") | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }, duration!!.toLong()) | ||
| } | ||
| } | ||
| } else { | ||
| result.notImplemented() | ||
| } | ||
| } | ||
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| override fun onAttachedToActivity(binding: ActivityPluginBinding) { | ||
| print("onAttachedToActivity") | ||
| activity = binding.activity | ||
| webView = WebView(activity.applicationContext) | ||
| webView.minimumHeight = 1 | ||
| webView.minimumWidth = 1 | ||
| } | ||
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| override fun onDetachedFromActivityForConfigChanges() { | ||
| // TODO: the Activity your plugin was attached to was destroyed to change configuration. | ||
| // This call will be followed by onReattachedToActivityForConfigChanges(). | ||
| print("onDetachedFromActivityForConfigChanges") | ||
| } | ||
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| override fun onReattachedToActivityForConfigChanges(binding: ActivityPluginBinding) { | ||
| // TODO: your plugin is now attached to a new Activity after a configuration change. | ||
| print("onAttachedToActivity") | ||
| onAttachedToActivity(binding) | ||
| } | ||
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| override fun onDetachedFromActivity() { | ||
| // TODO: your plugin is no longer associated with an Activity. Clean up references. | ||
| print("onDetachedFromActivity") | ||
| } | ||
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| override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) { | ||
| channel.setMethodCallHandler(null) | ||
| } | ||
| } | ||
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| fun WebView.toBitmap(offsetWidth: Double, offsetHeight: Double): Bitmap? { | ||
| if (offsetHeight > 0 && offsetWidth > 0) { | ||
| val width = (offsetWidth * this.resources.displayMetrics.density).absoluteValue.toInt() | ||
| val height = (offsetHeight * this.resources.displayMetrics.density).absoluteValue.toInt() | ||
| this.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)) | ||
| val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888) | ||
| val canvas = Canvas(bitmap) | ||
| this.draw(canvas) | ||
| return bitmap | ||
| } | ||
| return null | ||
| } | ||
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| fun Bitmap.toByteArray(): ByteArray { | ||
| ByteArrayOutputStream().apply { | ||
| compress(Bitmap.CompressFormat.PNG, 100, this) | ||
| return toByteArray() | ||
| } | ||
| } |
43 changes: 43 additions & 0 deletions
43
android/src/main/kotlin/com/ayeee/blue_print_pos/FLNativeViewFactory.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| package com.ayeee.blue_print_pos | ||
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| import android.content.Context | ||
| import android.view.View | ||
| import android.webkit.WebView | ||
| import io.flutter.plugin.common.StandardMessageCodec | ||
| import io.flutter.plugin.platform.PlatformView | ||
| import io.flutter.plugin.platform.PlatformViewFactory | ||
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| class FLNativeViewFactory : PlatformViewFactory(StandardMessageCodec.INSTANCE) { | ||
| override fun create(context: Context, viewId: Int, args: Any?): PlatformView { | ||
| val creationParams = args as Map<String?, Any?>? | ||
| return FLNativeView(context, viewId, creationParams) | ||
| } | ||
| } | ||
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| internal class FLNativeView(context: Context, id: Int, creationParams: Map<String?, Any?>?) : PlatformView { | ||
| private val webView: WebView = WebView(context) | ||
| private var arguments: Map<String?, Any?>? = creationParams | ||
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| override fun getView(): View { | ||
| return webView | ||
| } | ||
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| override fun dispose() {} | ||
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| init { | ||
| var width = (arguments!!["width"]!! as Number).toInt() | ||
| var height = (arguments!!["height"]!! as Number).toInt() | ||
| var content = arguments!!["content"] as String | ||
| webView.layout(0, 0, width, height) | ||
| webView.loadDataWithBaseURL(null, content, "text/HTML", "UTF-8", null) | ||
| webView.setInitialScale(1) | ||
| webView.settings.javaScriptEnabled = true | ||
| webView.settings.useWideViewPort = true | ||
| webView.settings.javaScriptCanOpenWindowsAutomatically = true | ||
| webView.settings.loadWithOverviewMode = true | ||
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| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| #include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig" | ||
| #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig" | ||
| #include "Generated.xcconfig" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| #include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig" | ||
| #include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig" | ||
| #include "Generated.xcconfig" |
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