[Workspaces] Add encoder parameter to bitmap.save() (#36228)

* [Workspaces] Add encoder parameter to bitmap.save()

* 1 more call fixed

* Move repeated code to the csharp library

Author: donlaci

src/modules/Workspaces/WorkspacesCsharpLibrary/DrawHelper.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+
+namespace WorkspacesCsharpLibrary
+{
+    public class DrawHelper
+    {
+        public static void SaveBitmap(Bitmap bitmap, MemoryStream memory)
+        {
+            ImageCodecInfo imageCodecInfo = ImageCodecInfo.GetImageEncoders().FirstOrDefault(codec => codec.FormatID == ImageFormat.Png.Guid);
+            EncoderParameters encoderParameters = new(1);
+            encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 50);
+
+            bitmap.Save(memory, imageCodecInfo, encoderParameters);
+        }
+    }
+}

src/modules/Workspaces/WorkspacesCsharpLibrary/Models/BaseApplication.cs

@@ -132,7 +132,7 @@ public BitmapImage IconBitmapImage
 
                         using (var memory = new MemoryStream())
                         {
-                            previewBitmap.Save(memory, ImageFormat.Png);
+                            DrawHelper.SaveBitmap(previewBitmap, memory);
                             memory.Position = 0;
 
                             BitmapImage bitmapImage = new BitmapImage();

src/modules/Workspaces/WorkspacesEditor/Utils/DrawHelper.cs

@@ -153,7 +153,8 @@ Rectangle GetAppRect(Application app)
             }
 
             using MemoryStream memory = new();
-            previewBitmap.Save(memory, ImageFormat.Png);
+            WorkspacesCsharpLibrary.DrawHelper.SaveBitmap(previewBitmap, memory);
+
             memory.Position = 0;
 
             BitmapImage bitmapImage = new();
@@ -311,7 +312,9 @@ public static BitmapImage DrawPreviewIcons(Project project)
             }
 
             using MemoryStream memory = new();
-            previewBitmap.Save(memory, ImageFormat.Png);
+
+            WorkspacesCsharpLibrary.DrawHelper.SaveBitmap(previewBitmap, memory);
+
             memory.Position = 0;
 
             BitmapImage bitmapImage = new();

src/modules/Workspaces/WorkspacesEditor/Utils/WorkspacesIcon.cs

@@ -94,7 +94,7 @@ public static void SaveIcon(Bitmap icon, string path)
             FileStream fileStream = new FileStream(path, FileMode.CreateNew);
             using (var memoryStream = new MemoryStream())
             {
-                icon.Save(memoryStream, ImageFormat.Png);
+                WorkspacesCsharpLibrary.DrawHelper.SaveBitmap(icon, memoryStream);
 
                 BinaryWriter iconWriter = new BinaryWriter(fileStream);
                 if (fileStream != null && iconWriter != null)