Added Preference and ToggleButton for diff navigation style

src/ViewModels/DiffContext.cs

@@ -133,6 +133,14 @@ namespace SourceGit.ViewModels
             LoadDiffContent();
         }
 
+        public void ToggleHighlightedDiffNavigation()
+        {
+            Preference.Instance.EnableChangeBlocks = !Preference.Instance.EnableChangeBlocks;
+            if (_content is Models.TextDiff textDiff)
+                textDiff.CurrentChangeBlockIdx = -1;
+            RefreshChangeBlockIndicator();
+        }
+
         public void IncrUnified()
         {
             UnifiedLines = _unifiedLines + 1;
@@ -145,6 +153,12 @@ namespace SourceGit.ViewModels
             LoadDiffContent();
         }
 
+        public void ToggleTwoSideDiff()
+        {
+            Preference.Instance.UseSideBySideDiff = !Preference.Instance.UseSideBySideDiff;
+            RefreshChangeBlockIndicator();
+        }
+
         public void OpenExternalMergeTool()
         {
             var toolType = Preference.Instance.ExternalMergeToolType;

src/ViewModels/Preference.cs

@@ -206,6 +206,12 @@ namespace SourceGit.ViewModels
             set => SetProperty(ref _useFullTextDiff, value);
         }
 
+        public bool EnableChangeBlocks
+        {
+            get => _enableChangeBlocks;
+            set => SetProperty(ref _enableChangeBlocks, value);
+        }
+
         public Models.ChangeViewMode UnstagedChangeViewMode
         {
             get => _unstagedChangeViewMode;
@@ -614,6 +620,7 @@ namespace SourceGit.ViewModels
         private bool _enableDiffViewWordWrap = false;
         private bool _showHiddenSymbolsInDiffView = false;
         private bool _useFullTextDiff = false;
+        private bool _enableChangeBlocks = false;
 
         private Models.ChangeViewMode _unstagedChangeViewMode = Models.ChangeViewMode.List;
         private Models.ChangeViewMode _stagedChangeViewMode = Models.ChangeViewMode.List;

src/Views/DiffView.axaml

@@ -34,6 +34,15 @@
 
           <!-- Toolbar Buttons -->
           <StackPanel Grid.Column="3" Margin="8,0,0,0" Orientation="Horizontal" VerticalAlignment="Center">
+            <ToggleButton Classes="line_path"
+              Width="28"
+              Command="{Binding ToggleHighlightedDiffNavigation}"
+              IsChecked="{Binding Source={x:Static vm:Preference.Instance}, Path=EnableChangeBlocks, Mode=OneWay}"
+              IsVisible="{Binding IsTextDiff}"
+              ToolTip.Tip="{DynamicResource Text.Diff.HighlightedDiffNavigation}">
+              <Path Width="13" Height="13" Data="{StaticResource Icons.Highlight}" Margin="0,3,0,0"/>
+            </ToggleButton>
+
             <Button Classes="icon_button"
                     Width="28"
                     Click="OnGotoPrevChange"
@@ -45,9 +54,14 @@
             <TextBlock Classes="primary"
                        Margin="0,0,0,0"
                        Text="{Binding ChangeBlockIndicator}"
-                       FontSize="11" 
+                       FontSize="11">
-                       TextTrimming="CharacterEllipsis"
+              <TextBlock.IsVisible>
-                       IsVisible="{Binding IsTextDiff}"/>
+                <MultiBinding Converter="{x:Static BoolConverters.And}">
+                  <Binding Path="IsTextDiff"/>
+                  <Binding Source="{x:Static vm:Preference.Instance}" Path="EnableChangeBlocks" Mode="OneWay"/>
+                </MultiBinding>
+              </TextBlock.IsVisible>
+            </TextBlock>
 
             <Button Classes="icon_button"
                     Width="28"
@@ -131,7 +145,8 @@
 
             <ToggleButton Classes="line_path"
                           Width="28" Height="18"
-                          IsChecked="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSideBySideDiff, Mode=TwoWay}"
+                          Command="{Binding ToggleTwoSideDiff}"
+                          IsChecked="{Binding Source={x:Static vm:Preference.Instance}, Path=UseSideBySideDiff, Mode=OneWay}"
                           IsVisible="{Binding IsTextDiff}"
                           ToolTip.Tip="{DynamicResource Text.Diff.SideBySide}">
               <Path Width="12" Height="12" Data="{StaticResource Icons.LayoutHorizontal}" Margin="0,2,0,0"/>

src/Views/DiffView.axaml.cs

@@ -12,6 +12,13 @@ namespace SourceGit.Views
         }
 
         private void OnGotoPrevChange(object _, RoutedEventArgs e)
+        {
+            if (ViewModels.Preference.Instance.EnableChangeBlocks)
+            {
+                if (DataContext is ViewModels.DiffContext diffCtx)
+                    diffCtx.PrevChange();
+            }
+            else
             {
                 var textDiff = this.FindDescendantOfType<ThemedTextDiffPresenter>();
                 if (textDiff == null)
@@ -23,8 +30,16 @@ namespace SourceGit.Views
 
                 e.Handled = true;
             }
+        }
 
         private void OnGotoNextChange(object _, RoutedEventArgs e)
+        {
+            if (ViewModels.Preference.Instance.EnableChangeBlocks)
+            {
+                if (DataContext is ViewModels.DiffContext diffCtx)
+                    diffCtx.NextChange();
+            }
+            else
             {
                 var textDiff = this.FindDescendantOfType<ThemedTextDiffPresenter>();
                 if (textDiff == null)
@@ -37,4 +52,5 @@ namespace SourceGit.Views
                 e.Handled = true;
             }
         }
+    }
 }

src/Views/TextDiffView.axaml.cs

@@ -635,6 +635,7 @@ namespace SourceGit.Views
                 //TextArea.Caret.BringCaretToView(); // NOTE: Brings caret line (barely) into view.
                 ScrollToLine(changeBlock.StartLine); // NOTE: Brings specified line into center of view.
             }
+            TextArea.TextView.Redraw();
         }
 
         public override void Render(DrawingContext context)
@@ -712,6 +713,10 @@ namespace SourceGit.Views
             {
                 InvalidateVisual();
             }
+            else if (change.Property == CurrentChangeBlockIdxProperty)
+            {
+                InvalidateVisual();
+            }
         }
 
         private void OnTextViewContextRequested(object sender, ContextRequestedEventArgs e)
@@ -1587,7 +1592,7 @@ namespace SourceGit.Views
 
             CurrentChangeBlockIdxProperty.Changed.AddClassHandler<TextDiffView>((v, e) =>
             {
-                if ((int)e.NewValue >= 0 && v.Editor.Presenter != null)
+                if (v.Editor.Presenter != null)
                 {
                     foreach (var p in v.Editor.Presenter.GetVisualDescendants().OfType<ThemedTextDiffPresenter>())
                     {