- In InRamImageData.Open don't draw the image unscaled because this c…

…an cause the image not to be drawn

- added corresponding test

Changelog.md

@@ -121,4 +121,5 @@ Be aware that code written for 1.9 will not work out of the box because DotSpati
 - Legend selection to be able to select features of a category (#1008)
 - Some errors in SetSelectable plugin (#1008)
 - Crash when attempting to use a serial GPS device on Mono
-- Clear the selection inside FeatureLayer.RemoveSelectedFeatures so the removed features are no longer contained when IFeatureSet.FeatureRemoved is raised
+- Clear the selection inside FeatureLayer.RemoveSelectedFeatures so the removed features are no longer contained when IFeatureSet.FeatureRemoved is raised
+- In InRamImageData.Open don't draw the image unscaled because this can cause the image not to be drawn

Source/DotSpatial.Data.Tests/DotSpatial.Data.Tests.csproj

@@ -81,6 +81,7 @@
     </Reference>
     <Reference Include="System.Data" />
     <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Windows.Forms" />
     <Reference Include="System.XML" />
   </ItemGroup>
@@ -98,6 +99,7 @@
     <Compile Include="ExtentTests.cs" />
     <Compile Include="FeatureListTests.cs" />
     <Compile Include="GeometryTests.cs" />
+    <Compile Include="InRamImageDataTests.cs" />
     <Compile Include="LineShapefileTests.cs" />
     <Compile Include="PointShapefileTests.cs" />
     <Compile Include="PolygonShapefileTests.cs" />

Source/DotSpatial.Data.Tests/InRamImageDataTests.cs

@@ -0,0 +1,31 @@
+// Copyright (c) DotSpatial Team. All rights reserved.
+// Licensed under the MIT license. See License.txt file in the project root for full license information.
+
+using System.Drawing;
+using System.IO;
+using NUnit.Framework;
+
+namespace DotSpatial.Data.Tests
+{
+    /// <summary>
+    /// Contains tests for the InRamImageData class.
+    /// </summary>
+    [TestFixture]
+    public class InRamImageDataTests
+    {
+        /// <summary>
+        /// This checks that the image that gets loaded in InRamImageData(fileName) ctor gets drawn to _inRamImage.
+        /// </summary>
+        [Test(Description = "This checks that the image that gets loaded in InRamImageData(fileName) constructor gets drawn to _inRamImage.")]
+        public void InRamImageDataCtorLoadsImageWithColor()
+        {
+            var imagePath = Path.Combine(@"Data\Grids", "Hintergrundkarte.tif");
+
+            using (var inram = new InRamImageData(imagePath))
+            using (var bitmap = inram.GetBitmap())
+            {
+                Assert.AreEqual(Color.FromArgb(255, 125, 105, 72), bitmap.GetPixel(300, 300)); // if the image was not drawn correctly GetPixel returns the ARGB values for white
+            }
+        }
+    }
+}

Source/DotSpatial.Data/InRamImageData.cs

@@ -281,7 +281,7 @@ public override void Open()
                 Width = temp.Width;
                 Height = temp.Height;
                 using (var g = Graphics.FromImage(_myImage))
-                    g.DrawImageUnscaled(temp, 0, 0);
+                    g.DrawImage(temp, 0, 0, temp.Width, temp.Height); // don't draw unscaled because then nothing is shown
             }
 
             WorldFile = new WorldFile(Filename);