Step by step improving of the functionality, now added Jpeg XR via the WmpFileFormatHandler which uses WPF.

src/Greenshot.Base/Controls/SaveImageFileDialog.cs

@@ -166,7 +166,7 @@ namespace Greenshot.Base.Controls
                 // if the filename contains a valid extension, which is the same like the selected filter item's extension, the filename is okay
                 if (fn.EndsWith(Extension, StringComparison.CurrentCultureIgnoreCase)) return fn;
                 // otherwise we just add the selected filter item's extension
-                else return fn + "." + Extension;
+                return fn + "." + Extension;
             }
             set
             {

src/Greenshot.Base/Core/ClipboardHelper.cs

@@ -65,7 +65,8 @@ namespace Greenshot.Base.Core
         //private static readonly string FORMAT_HTML = "HTML Format";
 
         // Template for the HTML Text on the clipboard
-        // see: https://msdn.microsoft.com/en-us/library/ms649015%28v=vs.85%29.aspx
+        // see: https://msdn.microsoft.com/en-us/library/ms649015%28v=v
+        // s.85%29.aspx
         // or:  https://msdn.microsoft.com/en-us/library/Aa767917.aspx
         private const string HtmlClipboardString = @"Version:0.9
 StartHTML:<<<<<<<1

src/Greenshot.Base/Core/Enums/ExifOrientations.cs

@@ -0,0 +1,36 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
+ *
+ * For more information see: https://getgreenshot.org/
+ * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace Greenshot.Base.Core.Enums
+{
+    internal enum ExifOrientations : byte
+    {
+        Unknown = 0,
+        TopLeft = 1,
+        TopRight = 2,
+        BottomRight = 3,
+        BottomLeft = 4,
+        LeftTop = 5,
+        RightTop = 6,
+        RightBottom = 7,
+        LeftBottom = 8,
+    }
+}

src/Greenshot.Base/Core/FileFormatHandlers/AbstractFileFormatHandler.cs

@@ -1,27 +0,0 @@
-using System.Collections.Generic;
-using System.Drawing;
-using System.IO;
-using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
-
-namespace Greenshot.Base.Core.FileFormatHandlers
-{
-    public abstract class AbstractFileFormatHandler
-    {
-        /// <summary>
-        /// Make sure we handle the input extension always the same, by "normalizing" it
-        /// </summary>
-        /// <param name="extension">string</param>
-        /// <returns>string</returns>
-        protected string NormalizeExtension(string extension)
-        {
-            if (string.IsNullOrEmpty(extension))
-            {
-                return null;
-            }
-
-            extension = extension.ToLowerInvariant();
-            return !extension.StartsWith(".") ? $".{extension}" : extension;
-        }
-    }
-}

src/Greenshot.Base/Core/ImageHelper.cs

@@ -26,28 +26,26 @@ using System.Drawing.Drawing2D;
 using System.Drawing.Imaging;
 using System.IO;
 using System.Linq;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using Greenshot.Base.Core.Enums;
 using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Effects;
 using Greenshot.Base.IniFile;
 using Greenshot.Base.Interfaces;
 using Greenshot.Base.UnmanagedHelpers;
 using log4net;
+using Brush = System.Drawing.Brush;
+using Color = System.Drawing.Color;
+using Matrix = System.Drawing.Drawing2D.Matrix;
+using Pen = System.Drawing.Pen;
+using PixelFormat = System.Drawing.Imaging.PixelFormat;
+using Point = System.Drawing.Point;
+using Size = System.Drawing.Size;
 
 namespace Greenshot.Base.Core
 {
-    internal enum ExifOrientations : byte
-    {
-        Unknown = 0,
-        TopLeft = 1,
-        TopRight = 2,
-        BottomRight = 3,
-        BottomLeft = 4,
-        LeftTop = 5,
-        RightTop = 6,
-        RightBottom = 7,
-        LeftBottom = 8,
-    }
-
     /// <summary>
     /// Description of ImageHelper.
     /// </summary>
@@ -1570,7 +1568,7 @@ namespace Greenshot.Base.Core
                     nPercentW = nPercentH;
                     if (canvasUseNewSize)
                     {
-                        destX = Math.Max(0, Convert.ToInt32((newWidth - sourceImage.Width * nPercentW) / 2));
+                        destX = Math.Max(0, System.Convert.ToInt32((newWidth - sourceImage.Width * nPercentW) / 2));
                     }
                 }
                 else if ((int) nPercentH == 1)
@@ -1578,7 +1576,7 @@ namespace Greenshot.Base.Core
                     nPercentH = nPercentW;
                     if (canvasUseNewSize)
                     {
-                        destY = Math.Max(0, Convert.ToInt32((newHeight - sourceImage.Height * nPercentH) / 2));
+                        destY = Math.Max(0, System.Convert.ToInt32((newHeight - sourceImage.Height * nPercentH) / 2));
                     }
                 }
                 else if ((int) nPercentH != 0 && nPercentH < nPercentW)
@@ -1586,7 +1584,7 @@ namespace Greenshot.Base.Core
                     nPercentW = nPercentH;
                     if (canvasUseNewSize)
                     {
-                        destX = Math.Max(0, Convert.ToInt32((newWidth - sourceImage.Width * nPercentW) / 2));
+                        destX = Math.Max(0, System.Convert.ToInt32((newWidth - sourceImage.Width * nPercentW) / 2));
                     }
                 }
                 else
@@ -1594,7 +1592,7 @@ namespace Greenshot.Base.Core
                     nPercentH = nPercentW;
                     if (canvasUseNewSize)
                     {
-                        destY = Math.Max(0, Convert.ToInt32((newHeight - sourceImage.Height * nPercentH) / 2));
+                        destY = Math.Max(0, System.Convert.ToInt32((newHeight - sourceImage.Height * nPercentH) / 2));
                     }
                 }
             }
@@ -1739,16 +1737,97 @@ namespace Greenshot.Base.Core
         {
             var bitmap = CreateEmptyLike(image, Color.Transparent);
 
-            using var gfx = Graphics.FromImage(bitmap);
-            gfx.InterpolationMode = InterpolationMode.HighQualityBicubic;
+            using var graphics = Graphics.FromImage(bitmap);
+            graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
 
-            gfx.TranslateTransform((float)bitmap.Width / 2, (float)bitmap.Height / 2);
-            gfx.RotateTransform(rotationAngle);
-            gfx.TranslateTransform(-(float)bitmap.Width / 2, -(float)bitmap.Height / 2);
+            graphics.TranslateTransform((float)bitmap.Width / 2, (float)bitmap.Height / 2);
+            graphics.RotateTransform(rotationAngle);
+            graphics.TranslateTransform(-(float)bitmap.Width / 2, -(float)bitmap.Height / 2);
 
-            gfx.DrawImage(image, new Point(0, 0));
+            graphics.DrawImage(image, new Point(0, 0));
 
             return bitmap;
         }
+
+        /// <summary>
+        /// Map a System.Drawing.Imaging.PixelFormat to a System.Windows.Media.PixelFormat
+        /// </summary>
+        /// <param name="pixelFormat">System.Drawing.Imaging.PixelFormat</param>
+        /// <returns>System.Windows.Media.PixelFormat</returns>
+        /// <exception cref="NotSupportedException"></exception>
+        public static System.Windows.Media.PixelFormat Map(this PixelFormat pixelFormat) =>
+            pixelFormat switch
+            {
+                PixelFormat.Format32bppArgb => PixelFormats.Bgra32,
+                PixelFormat.Format24bppRgb => PixelFormats.Bgr24,
+                PixelFormat.Format32bppRgb => PixelFormats.Bgr32,
+                _ => throw new NotSupportedException($"Can't map {pixelFormat}.")
+            };
+
+        /// <summary>
+        /// Map a System.Windows.Media.PixelFormat to a System.Drawing.Imaging.PixelFormat
+        /// </summary>
+        /// <param name="pixelFormat">System.Windows.Media.PixelFormat</param>
+        /// <returns>System.Drawing.Imaging.PixelFormat</returns>
+        /// <exception cref="NotSupportedException"></exception>
+        public static PixelFormat Map(this System.Windows.Media.PixelFormat pixelFormat)
+        {
+            if (pixelFormat == PixelFormats.Bgra32)
+            {
+                return PixelFormat.Format32bppArgb;
+            }
+            if (pixelFormat == PixelFormats.Bgr24)
+            {
+                return PixelFormat.Format24bppRgb;
+            }
+            if (pixelFormat == PixelFormats.Bgr32)
+            {
+                return PixelFormat.Format32bppRgb;
+            }
+
+            throw new NotSupportedException($"Can't map {pixelFormat}.");
+        }
+
+        /// <summary>
+        /// Convert a Bitmap to a BitmapSource
+        /// </summary>
+        /// <param name="bitmap">Bitmap</param>
+        /// <returns>BitmapSource</returns>
+        public static BitmapSource ToBitmapSource(this Bitmap bitmap)
+        {
+            var bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, bitmap.PixelFormat);
+
+            BitmapSource bitmapSource;
+            try
+            {
+                bitmapSource = BitmapSource.Create(
+                    bitmapData.Width, bitmapData.Height,
+                    bitmap.HorizontalResolution, bitmap.VerticalResolution,
+                    bitmap.PixelFormat.Map(), null,
+                    bitmapData.Scan0, bitmapData.Stride * bitmapData.Height, bitmapData.Stride);
+            }
+            finally
+            {
+                bitmap.UnlockBits(bitmapData);
+            }
+
+            return bitmapSource;
+        }
+
+        /// <summary>
+        /// Convert a BitmapSource to a Bitmap
+        /// </summary>
+        /// <param name="bitmapSource">BitmapSource</param>
+        /// <returns>Bitmap</returns>
+        public static Bitmap ToBitmap(this BitmapSource bitmapSource)
+        {
+            var pixelFormat = bitmapSource.Format.Map();
+
+            Bitmap bitmap = new Bitmap(bitmapSource.PixelWidth, bitmapSource.PixelHeight, pixelFormat);
+            BitmapData data = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size), ImageLockMode.WriteOnly, pixelFormat);
+            bitmapSource.CopyPixels(Int32Rect.Empty, data.Scan0, data.Height * data.Stride, data.Stride);
+            bitmap.UnlockBits(data);
+            return bitmap;
+        }
     }
 }

src/Greenshot.Editor/Drawing/MetafileContainer.cs

@@ -64,6 +64,16 @@ namespace Greenshot.Editor.Drawing
             return newImage;
         }
 
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _metafile?.Dispose();
+            }
+            
+            base.Dispose(disposing);
+        }
+
         public override bool HasDefaultSize => true;
 
         public override Size DefaultSize => new Size(_metafile.Width, _metafile.Height);

src/Greenshot.Editor/EditorInitialize.cs

@@ -28,12 +28,19 @@ namespace Greenshot.Editor
     {
         public static void Initialize()
         {
-            FileFormatHandlerRegistry.FileFormatHandlers.Add(new SvgFileFormatHandler());
+            // All generic things, like gif, png, jpg etc.
             FileFormatHandlerRegistry.FileFormatHandlers.Add(new DefaultFileFormatHandler());
-            FileFormatHandlerRegistry.FileFormatHandlers.Add(new DibFileFormatHandler());
             FileFormatHandlerRegistry.FileFormatHandlers.Add(new GreenshotFileFormatHandler());
+            // For .svg support
+            FileFormatHandlerRegistry.FileFormatHandlers.Add(new SvgFileFormatHandler());
+            // For clipboard support
+            FileFormatHandlerRegistry.FileFormatHandlers.Add(new DibFileFormatHandler());
+            // .ico
             FileFormatHandlerRegistry.FileFormatHandlers.Add(new IconFileFormatHandler());
+            // EMF & WMF
             FileFormatHandlerRegistry.FileFormatHandlers.Add(new MetaFileFormatHandler());
+            // JPG XR
+            FileFormatHandlerRegistry.FileFormatHandlers.Add(new WmpFileFormatHandler());
         }
     }
 }

src/Greenshot.Editor/FileFormatHandlers/AbstractFileFormatHandler.cs

@@ -0,0 +1,76 @@
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using Greenshot.Base.Interfaces;
+using Greenshot.Base.Interfaces.Drawing;
+using Greenshot.Editor.Drawing;
+
+namespace Greenshot.Editor.FileFormatHandlers
+{
+    public abstract class AbstractFileFormatHandler : IFileFormatHandler
+    {
+        /// <summary>
+        /// Make sure we handle the input extension always the same, by "normalizing" it
+        /// </summary>
+        /// <param name="extension">string</param>
+        /// <returns>string</returns>
+        protected string NormalizeExtension(string extension)
+        {
+            if (string.IsNullOrEmpty(extension))
+            {
+                return null;
+            }
+
+            extension = extension.ToLowerInvariant();
+            return !extension.StartsWith(".") ? $".{extension}" : extension;
+        }
+
+        protected abstract string[] OurExtensions { get; }
+
+        /// <inheritdoc />
+        public virtual IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
+        {
+            return OurExtensions;
+        }
+
+        /// <inheritdoc />
+        public virtual bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        {
+            return OurExtensions.Contains(NormalizeExtension(extension));
+        }
+
+        /// <inheritdoc />
+        public virtual int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        {
+            return int.MaxValue;
+        }
+
+        public abstract bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension);
+        public abstract bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap);
+
+        /// <summary>
+        /// Default implementation taking the TryLoadFromStream image and placing it in an ImageContainer 
+        /// </summary>
+        /// <param name="stream">Stream</param>
+        /// <param name="extension">string</param>
+        /// <param name="drawableContainer">IDrawableContainer out</param>
+        /// <param name="parentSurface">ISurface</param>
+        /// <returns>bool</returns>
+        public virtual bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface parentSurface = null)
+        {
+            if (TryLoadFromStream(stream, extension, out var bitmap))
+            {
+                var imageContainer = new ImageContainer(parentSurface)
+                {
+                    Image = bitmap
+                };
+                drawableContainer = imageContainer;
+                return true;
+            }
+
+            drawableContainer = null;
+            return true;
+        }
+    }
+}

src/Greenshot.Editor/FileFormatHandlers/DefaultFileFormatHandler.cs

@@ -19,16 +19,11 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-using System.Collections.Generic;
 using System.Drawing;
 using System.Drawing.Imaging;
 using System.IO;
-using System.Linq;
 using Greenshot.Base.Core;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
-using Greenshot.Editor.Drawing;
 
 namespace Greenshot.Editor.FileFormatHandlers
 {
@@ -37,28 +32,10 @@ namespace Greenshot.Editor.FileFormatHandlers
     /// </summary>
     public class DefaultFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
     {
-        private static readonly string [] OurExtensions = { ".png", ".bmp", ".gif", ".jpg", ".jpeg", ".tiff", ".tif" };
+        protected override string[] OurExtensions { get; } = { ".png", ".bmp", ".gif", ".jpg", ".jpeg", ".tiff", ".tif" };
 
         /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
-        {
-            return OurExtensions;
-        }
-
-        /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return OurExtensions.Contains(NormalizeExtension(extension));
-        }
-
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
-
-        /// <inheritdoc />
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
             ImageFormat imageFormat = NormalizeExtension(extension) switch
             {
@@ -81,28 +58,11 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             using var tmpImage = Image.FromStream(stream, true, true);
             bitmap = ImageHelper.Clone(tmpImage, PixelFormat.Format32bppArgb);
             return true;
         }
-
-        /// <inheritdoc />
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface surface = null)
-        {
-            if (TryLoadFromStream(stream, extension, out var bitmap))
-            {
-                var imageContainer = new ImageContainer(surface)
-                {
-                    Image = bitmap
-                };
-                drawableContainer = imageContainer;
-                return true;
-            }
-
-            drawableContainer = null;
-            return true;
-        }
     }
 }

src/Greenshot.Editor/FileFormatHandlers/DibFileFormatHandler.cs

@@ -20,18 +20,13 @@
  */
 
 using System;
-using System.Collections.Generic;
 using System.Drawing;
 using System.Drawing.Imaging;
 using System.IO;
-using System.Linq;
 using System.Runtime.InteropServices;
 using Greenshot.Base.Core;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
 using Greenshot.Base.UnmanagedHelpers;
-using Greenshot.Editor.Drawing;
 using log4net;
 
 namespace Greenshot.Editor.FileFormatHandlers
@@ -43,29 +38,10 @@ namespace Greenshot.Editor.FileFormatHandlers
     {
         private const double DpiToPelsPerMeter = 39.3701;
         private static readonly ILog Log = LogManager.GetLogger(typeof(DibFileFormatHandler));
-        private static readonly string [] OurExtensions = { ".dib", ".format17" };
+        protected override string[] OurExtensions { get; } = { ".dib", ".format17" };
 
         /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
-        {
-            return OurExtensions;
-        }
-
-        /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            extension = NormalizeExtension(extension);
-            return OurExtensions.Contains(extension);
-        }
-
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
-
-        /// <inheritdoc />
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
             var dibBytes = ConvertToDib(bitmap);
             destination.Write(dibBytes, 0, dibBytes.Length);
@@ -73,7 +49,7 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             byte[] dibBuffer = new byte[stream.Length];
             _ = stream.Read(dibBuffer, 0, dibBuffer.Length);
@@ -133,24 +109,6 @@ namespace Greenshot.Editor.FileFormatHandlers
             return true;
         }
 
-        /// <inheritdoc />
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface surface = null)
-        {
-            if (TryLoadFromStream(stream, extension, out var bitmap))
-            {
-                var imageContainer = new ImageContainer(surface)
-                {
-                    Image = bitmap
-                };
-                drawableContainer = imageContainer;
-                return true;
-            }
-
-            drawableContainer = null;
-            return true;
-        }
-
-
         /// <summary>
         /// Converts the Bitmap to a Device Independent Bitmap format of type BITFIELDS.
         /// </summary>

src/Greenshot.Editor/FileFormatHandlers/GreenshotFileFormatHandler.cs

@@ -25,18 +25,16 @@ using System.Drawing;
 using System.IO;
 using System.Linq;
 using Greenshot.Base.Core;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
 
 namespace Greenshot.Editor.FileFormatHandlers
 {
     public class GreenshotFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
     {
-        private static readonly string[] OurExtensions = { ".greenshot" };
+        protected override string[] OurExtensions { get; } = { ".greenshot" };
 
         /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
+        public override IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
         {
             if (fileFormatHandlerAction == FileFormatHandlerActions.LoadDrawableFromStream)
             {
@@ -47,12 +45,8 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        public override bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
         {
-            if (fileFormatHandlerAction == FileFormatHandlerActions.LoadDrawableFromStream)
-            {
-                return false;
-            }
             if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
             {
                 return false;
@@ -61,29 +55,17 @@ namespace Greenshot.Editor.FileFormatHandlers
             return OurExtensions.Contains(NormalizeExtension(extension));
         }
 
-
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
-            return int.MaxValue;
+            throw new NotImplementedException();
         }
 
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
-        {
-            // TODO: Implement this
-            return false;
-        }
-
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             var surface = SimpleServiceProvider.Current.GetInstance<Func<ISurface>>().Invoke();
             bitmap = (Bitmap)surface.GetImageForExport();
             return true;
         }
 
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface parent = null)
-        {
-            throw new NotImplementedException();
-        }
     }
 }

src/Greenshot.Editor/FileFormatHandlers/IconFileFormatHandler.cs

@@ -20,16 +20,11 @@
  */
 
 using System;
-using System.Collections.Generic;
 using System.Drawing;
 using System.Drawing.Imaging;
 using System.IO;
-using System.Linq;
 using Greenshot.Base.Core;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
-using Greenshot.Editor.Drawing;
 using log4net;
 
 namespace Greenshot.Editor.FileFormatHandlers
@@ -39,45 +34,18 @@ namespace Greenshot.Editor.FileFormatHandlers
     /// </summary>
     public class IconFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
     {
-        private static readonly ILog Log = LogManager.GetLogger(typeof(ImageHelper));
+        private static readonly ILog Log = LogManager.GetLogger(typeof(IconFileFormatHandler));
 
-        private static readonly string[] OurExtensions = { ".ico" };
+        protected override string[] OurExtensions { get; } = { ".ico" };
 
-        /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
-        {
-            if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
-            {
-                return Enumerable.Empty<string>();
-            }
 
-            return OurExtensions;
-        }
-
-        /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
-            {
-                return false;
-            }
-
-            return OurExtensions.Contains(NormalizeExtension(extension));
-        }
-
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
-
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
             // TODO: Implement this
             return false;
         }
 
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             _ = stream.Seek(0, SeekOrigin.Current);
 
@@ -115,23 +83,6 @@ namespace Greenshot.Editor.FileFormatHandlers
             return false;
         }
 
-
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface surface = null)
-        {
-            if (TryLoadFromStream(stream, extension, out var bitmap))
-            {
-                var imageContainer = new ImageContainer(surface)
-                {
-                    Image = bitmap
-                };
-                drawableContainer = imageContainer;
-                return true;
-            }
-
-            drawableContainer = null;
-            return true;
-        }
-
         /// <summary>
         /// Based on: https://www.codeproject.com/KB/cs/IconExtractor.aspx
         /// And a hint from: https://www.codeproject.com/KB/cs/IconLib.aspx

src/Greenshot.Editor/FileFormatHandlers/MetaFileFormatHandler.cs

@@ -25,7 +25,6 @@ using System.Drawing.Imaging;
 using System.IO;
 using System.Linq;
 using Greenshot.Base.Core;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
 using Greenshot.Base.Interfaces.Drawing;
 using Greenshot.Editor.Drawing;
@@ -37,10 +36,9 @@ namespace Greenshot.Editor.FileFormatHandlers
     /// </summary>
     public class MetaFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
     {
-        private static readonly string [] OurExtensions = { ".wmf", ".emf" };
+        protected override string[] OurExtensions { get; } = { ".wmf", ".emf" };
 
-        /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
+        public override IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
         {
             if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
             {
@@ -51,7 +49,7 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        public override bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
         {
             if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
             {
@@ -62,19 +60,13 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
-
-        /// <inheritdoc />
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
             return false;
         }
 
         /// <inheritdoc />
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             try
             {
@@ -93,7 +85,7 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface surface = null)
+        public override bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface surface = null)
         {
             if (Image.FromStream(stream, true, true) is Metafile metaFile)
             {

src/Greenshot.Editor/FileFormatHandlers/PngFileFormatHandler.cs

@@ -1,84 +0,0 @@
-/*
- * Greenshot - a free and open source screenshot tool
- * Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
- * 
- * For more information see: https://getgreenshot.org/
- * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 1 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.IO;
-using System.Linq;
-using Greenshot.Base.Interfaces;
-using Greenshot.Base.Interfaces.Drawing;
-
-namespace Greenshot.Editor.FileFormatHandlers
-{
-    /// <summary>
-    /// This can be an ImageSharp implementation
-    /// </summary>
-    public class PngFileFormatHandler : IFileFormatHandler
-    {
-        private static readonly string[] OurExtensions = { "png" };
-
-        /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
-        {
-            if (fileFormatHandlerAction == FileFormatHandlerActions.LoadDrawableFromStream)
-            {
-                return Enumerable.Empty<string>();
-            }
-
-            return OurExtensions;
-        }
-
-        /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            if (fileFormatHandlerAction == FileFormatHandlerActions.LoadDrawableFromStream)
-            {
-                return false;
-            }
-
-            return OurExtensions.Contains(extension?.ToLowerInvariant());
-        }
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
-
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
-        {
-            // TODO: Implement this
-            throw new NotImplementedException();
-        }
-
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
-        {
-            // TODO: Implement this
-            return false;
-        }
-
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface parent)
-        {
-            // TODO: Implement this
-            throw new NotImplementedException();
-        }
-    }
-}

src/Greenshot.Editor/FileFormatHandlers/SvgFileFormatHandler.cs

@@ -24,7 +24,6 @@ using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
 using System.Linq;
-using Greenshot.Base.Core.FileFormatHandlers;
 using Greenshot.Base.Interfaces;
 using Greenshot.Base.Interfaces.Drawing;
 using Greenshot.Editor.Drawing;
@@ -39,10 +38,10 @@ namespace Greenshot.Editor.FileFormatHandlers
     public class SvgFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
     {
         private static readonly ILog Log = LogManager.GetLogger(typeof(SvgFileFormatHandler));
-        private static readonly string[] OurExtensions = { ".svg" };
+        protected override string[] OurExtensions { get; } = { ".svg" };
 
         /// <inheritdoc />
-        public IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
+        public override IEnumerable<string> SupportedExtensions(FileFormatHandlerActions fileFormatHandlerAction)
         {
             if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
             {
@@ -53,7 +52,7 @@ namespace Greenshot.Editor.FileFormatHandlers
         }
 
         /// <inheritdoc />
-        public bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
+        public override bool Supports(FileFormatHandlerActions fileFormatHandlerAction, string extension)
         {
             if (fileFormatHandlerAction == FileFormatHandlerActions.SaveToStream)
             {
@@ -62,13 +61,8 @@ namespace Greenshot.Editor.FileFormatHandlers
 
             return OurExtensions.Contains(NormalizeExtension(extension));
         }
-        /// <inheritdoc />
-        public int PriorityFor(FileFormatHandlerActions fileFormatHandlerAction, string extension)
-        {
-            return int.MaxValue;
-        }
 
-        public bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
         {
             var svgDocument = SvgDocument.Open<SvgDocument>(stream);
 
@@ -85,13 +79,13 @@ namespace Greenshot.Editor.FileFormatHandlers
             return false;
         }
 
-        public bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
         {
             // TODO: Implement this
             return false;
         }
 
-        public bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface parent = null)
+        public override bool TryLoadDrawableFromStream(Stream stream, string extension, out IDrawableContainer drawableContainer, ISurface parent = null)
         {
             var svgDocument = SvgDocument.Open<SvgDocument>(stream);
             if (svgDocument == null)

src/Greenshot.Editor/FileFormatHandlers/WmpFileFormatHandler.cs

@@ -0,0 +1,66 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2021 Thomas Braun, Jens Klingen, Robin Krom
+ * 
+ * For more information see: https://getgreenshot.org/
+ * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+using System.Drawing;
+using System.IO;
+using System.Windows.Media.Imaging;
+using Greenshot.Base.Interfaces;
+using Greenshot.Base.Core;
+
+namespace Greenshot.Editor.FileFormatHandlers
+{
+    /// <summary>
+    /// This is the default .NET bitmap file format handler
+    /// </summary>
+    public class WmpFileFormatHandler : AbstractFileFormatHandler, IFileFormatHandler
+    {
+        protected override string[] OurExtensions { get; } = { ".jxr", ".wdp", ".wmp" };
+
+        /// <inheritdoc />
+        public override bool TrySaveToStream(Bitmap bitmap, Stream destination, string extension)
+        {
+            try
+            {
+                var bitmapSource = bitmap.ToBitmapSource();
+                var bitmapFrame = BitmapFrame.Create(bitmapSource);
+                var jpegXrEncoder = new WmpBitmapEncoder();
+                jpegXrEncoder.Frames.Add(bitmapFrame);
+                // TODO: Support supplying a quality
+                //jpegXrEncoder.ImageQualityLevel = quality / 100f;
+                jpegXrEncoder.Save(destination);
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool TryLoadFromStream(Stream stream, string extension, out Bitmap bitmap)
+        {
+            var decoder = new WmpBitmapDecoder(stream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.None);
+            var bitmapSource = decoder.Frames[0];
+            bitmap = bitmapSource.ToBitmap();
+            return true;
+        }
+    }
+}