implement CopyBitmapDataObject

samples/ControlCatalog/Pages/ClipboardPage.xaml

@@ -12,7 +12,7 @@
     <Button Click="CopyFilesDataObject" Content="Copy files to clipboard (data object)" />
     <Button Click="PasteFilesDataObject" Content="Paste files from clipboard (data object)" />
 
-    <Button Click="CopyBitmapDataObject" Content="Copy bitmap (CF_DIB, image/bmp) to clipboard (data object)" IsEnabled="False" />
+    <Button Click="CopyBitmapDataObject" Content="Copy bitmap (CF_DIB, image/bmp) to clipboard (data object)" />
     <Button Click="PasteBitmapDataObject" Content="Paste bitmap (CF_DIB, image/bmp) from clipboard (data object)" />
 
     <Button Click="GetFormats" Content="Get clipboard formats" />
@@ -21,7 +21,6 @@
     <TextBox x:Name="ClipboardContent"
              MinHeight="400"
              AcceptsReturn="True"
-             Watermark="Text to copy of file names per line"
-             TextWrapping="Wrap"/>
+             Watermark="Text to copy of file names per line" />
   </StackPanel>
 </UserControl>

samples/ControlCatalog/Pages/ClipboardPage.xaml.cs

@@ -119,9 +119,24 @@ namespace ControlCatalog.Pages
             }
         }
 
-        private void CopyBitmapDataObject(object? sender, RoutedEventArgs args)
+        private async void CopyBitmapDataObject(object? sender, RoutedEventArgs args)
         {
-            throw new NotSupportedException();
+            if (TopLevel.GetTopLevel(this)?.Clipboard is { } clipboard)
+            {
+                var lines = (ClipboardContent.Text ?? string.Empty)
+                    .Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
+                if (lines.Length < 3)
+                {
+                    return;
+                }
+                var format = lines[0];
+                var hexLine = string.Join(" ", lines.Skip(2));
+                var hexBytes = hexLine.Split(new[] { ' ', '-' }, StringSplitOptions.RemoveEmptyEntries);
+                var bytes = hexBytes.Select(x => Convert.ToByte(x, 16));
+                var dataObject = new DataObject();
+                dataObject.Set(format, bytes);
+                await clipboard.SetDataObjectAsync(dataObject);
+            }
         }
 
         private async void PasteBitmapDataObject(object? sender, RoutedEventArgs args)
@@ -133,6 +148,12 @@ namespace ControlCatalog.Pages
                 var obj = await clipboard.GetDataAsync(format);
                 var bytes = obj as IEnumerable<byte>;
                 if (bytes == null)
+                {
+                    format = "Unknown_Format_8";
+                    obj = await clipboard.GetDataAsync(format);
+                    bytes = obj as IEnumerable<byte>;
+                }
+                if (bytes == null)
                 {
                     format = "Dib";
                     obj = await clipboard.GetDataAsync(format);
@@ -159,11 +180,14 @@ namespace ControlCatalog.Pages
 
                 if (bytes != null)
                 {
-                    var printable = bytes.Take(1000);
+                    var printable = bytes.ToArray();
                     var sb = new StringBuilder(256 + printable.Count() * 3);
-                    sb.AppendLine($"format: {format}, {bytes.Count()} bytes, list of first {printable.Count()}");
-                    sb.AppendJoin(" ", printable.Select(x => x.ToString("X2")));
+                    sb.AppendLine($"{format}");
+                    sb.AppendLine($"{bytes.Count()} bytes (list of first {printable.Count()} bytes)");
+                    sb.Append(BitConverter.ToString(printable).Replace('-', ' '));
+                    ClipboardContent.TextWrapping = Avalonia.Media.TextWrapping.NoWrap;
                     ClipboardContent.Text = sb.ToString();
+                    ClipboardContent.TextWrapping = Avalonia.Media.TextWrapping.Wrap;
                 }
                 else
                 {