Initial import

1 files changed, 126 insertions, 0 deletions

diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31029.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31029.cs
new file mode 100644
index 00000000..9f9594a2
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla31029.cs
@@ -0,0 +1,126 @@
+using System;
+using System.IO;
+using System.Text;
+using Xamarin.Forms.CustomAttributes;
+
+#if UITEST
+using Xamarin.UITest;
+using NUnit.Framework;
+#endif
+
+namespace Xamarin.Forms.Controls
+{
+	[Preserve (AllMembers = true)]
+	[Issue (IssueTracker.Bugzilla, 31029, "[Windows Phone 8.1]Generating an Image via MemoryStream does not appear")]
+	public class Bugzilla31029 : TestContentPage // or TestMasterDetailPage, etc ...
+	{
+		protected override void Init ()
+		{
+			var generatedImage = new Image { Aspect = Aspect.AspectFit };
+
+			var btn = new Button { Text="generate" };
+
+			btn.Clicked += (sender, e) => {
+				var source =  GenerateBmp (60, 60, Color.Red);
+				generatedImage.Source = source;
+
+			};
+
+			Content = new StackLayout {
+				Children = {
+						btn,
+                    new Label {Text = "GeneratedImage", Font=Font.BoldSystemFontOfSize(NamedSize.Medium)},
+                    generatedImage
+                },
+				Padding = new Thickness (0, 20, 0, 0),
+				VerticalOptions = LayoutOptions.StartAndExpand,
+				HorizontalOptions = LayoutOptions.CenterAndExpand
+			};
+		}
+		public ImageSource GenerateBmp (int rows, int cols, Color color)
+		{
+			BmpMaker bmpMaker = new BmpMaker (rows, cols);
+			//background color to white
+			for (int i = 0; i < rows; i++) {
+				for (int j = 0; j < cols; j++) {
+					bmpMaker.SetPixel (i, j, Color.White);
+				}
+			}
+			//draw a square
+			int marginX = rows / 10;
+			int marginY = cols / 10;
+			for (int row = marginX; row < (rows - marginX); row++) {
+				for (int col = marginY; col < (cols - marginY); col++) {
+					bmpMaker.SetPixel (row, col, color);
+				}
+			}
+			ImageSource resultImage = bmpMaker.Generate ();
+			return resultImage;
+		}
+	}
+
+	public class BmpMaker
+	{
+		const int HeaderSize = 54;
+		readonly byte[] _buffer;
+		public BmpMaker (int width, int height)
+		{
+			Width = width;
+			Height = height;
+			int numPixels = Width * Height;
+			int numPixelBytes = 4 * numPixels;
+			int fileSize = HeaderSize + numPixelBytes;
+			_buffer = new byte[fileSize];
+			// Write headers in MemoryStream and hence the buffer. 
+			using (MemoryStream memoryStream = new MemoryStream (_buffer)) {
+				using (BinaryWriter writer = new BinaryWriter (memoryStream, Encoding.UTF8)) {
+					// Construct BMP header (14 bytes). 
+					writer.Write (new char[] { 'B', 'M' }); // Signature 
+					writer.Write (fileSize); // File size 
+					writer.Write ((short) 0); // Reserved 
+					writer.Write ((short) 0); // Reserved 
+					writer.Write (HeaderSize); // Offset to pixels 
+					// Construct BitmapInfoHeader (40 bytes). 
+					writer.Write (40); // Header size 
+					writer.Write (Width); // Pixel width 
+					writer.Write (Height); // Pixel height 
+					writer.Write ((short) 1); // Planes 
+					writer.Write ((short) 32); // Bits per pixel 
+					writer.Write (0); // Compression 
+					writer.Write (numPixelBytes); // Image size in bytes 
+					writer.Write (0); // X pixels per meter 
+					writer.Write (0); // Y pixels per meter 
+					writer.Write (0); // Number colors in color table 
+					writer.Write (0); // Important color count 
+				}
+			}
+		}
+
+		public int Width { get; private set; }
+		public int Height { get; private set; }
+
+		public void SetPixel (int row, int col, Color color)
+		{
+			SetPixel (row, col, (int) (255 * color.R),
+				(int) (255 * color.G),
+				(int) (255 * color.B),
+				(int) (255 * color.A));
+		}
+
+		public void SetPixel (int row, int col, int r, int g, int b, int a = 255)
+		{
+			int index = (row * Width + col) * 4 + HeaderSize;
+			_buffer[index + 0] = (byte) b;
+			_buffer[index + 1] = (byte) g;
+			_buffer[index + 2] = (byte) r;
+			_buffer[index + 3] = (byte) a;
+		}
+
+		public ImageSource Generate ()
+		{
+			Stream memoryStream = new MemoryStream (_buffer);
+			ImageSource imageSource = ImageSource.FromStream (() => { return memoryStream; });
+			return imageSource;
+		}
+	}
+}