feat: 添加对悬停提交的支持，更新相关视图模型和UI绑定

Author: heartacker

src/Models/Commit.cs

@@ -51,6 +51,7 @@ public static double OpacityForNotMerged
         public string CommitterTimeShortStr => DateTime.UnixEpoch.AddSeconds(CommitterTime).ToLocalTime().ToString(DateTimeFormat.Active.DateOnly);
 
         public bool IsCommitFilterHead { get; set; } = false;
+        public bool IsHoveredRelated { get; set; } = false;
         public bool IsMerged { get; set; } = false;
         public bool IsCommitterVisible => !Author.Equals(Committer) || AuthorTime != CommitterTime;
         public bool IsCurrentHead => Decorators.Find(x => x.Type is DecoratorType.CurrentBranchHead or DecoratorType.CurrentCommitHead) != null;

src/ViewModels/Histories.cs

@@ -63,6 +63,17 @@ public long NavigationId
             private set => SetProperty(ref _navigationId, value);
         }
 
+        public long HoveredCommitId
+        {
+            get => _hoveredCommitId;
+            set
+            {
+                if (SetProperty(ref _hoveredCommitId, value))
+                {
+                }
+            }
+        }
+
         public IDisposable DetailContext
         {
             get => _detailContext;
@@ -233,6 +244,9 @@ public void ProcessHoveredCommit(Models.Commit commit)
             Console.WriteLine($"=========");
             childrens.Reverse();
 
+            _commits.ForEach(c => c.IsHoveredRelated = false);
+            childrens.ForEach(c => c.IsHoveredRelated = true);
+            HoveredCommitId = commit.Index;
             foreach (var c in childrens)
             {
                 Console.WriteLine($"{c.Index}.{c.Subject}");
@@ -570,6 +584,8 @@ private void NavigateTo(Models.Commit commit)
         private Models.Commit _autoSelectedCommit = null;
         private Models.Bisect _bisect = null;
         private long _navigationId = 0;
+        private long _hoveredCommitId = 0;
+
         private IDisposable _detailContext = null;
 
         private GridLength _leftArea = new GridLength(1, GridUnitType.Star);

src/Views/CommitGraph.cs

@@ -33,6 +33,15 @@ public bool OnlyHighlightCurrentBranch
             set => SetValue(OnlyHighlightCurrentBranchProperty, value);
         }
 
+        public static readonly StyledProperty<long> HoveredCommitIdProperty =
+            AvaloniaProperty.Register<CommitGraph, long>(nameof(HoveredCommitId), 0);
+
+        public long HoveredCommitId
+        {
+            get => GetValue(HoveredCommitIdProperty);
+            set => SetValue(HoveredCommitIdProperty, value);
+        }
+
         public static readonly StyledProperty<Models.CommitGraphLayout> LayoutProperty =
             AvaloniaProperty.Register<CommitGraph, Models.CommitGraphLayout>(nameof(Layout));
 
@@ -48,6 +57,7 @@ static CommitGraph()
                 GraphProperty,
                 DotBrushProperty,
                 OnlyHighlightCurrentBranchProperty,
+                HoveredCommitIdProperty,
                 LayoutProperty);
         }
 
@@ -75,6 +85,7 @@ public override void Render(DrawingContext context)
         private void DrawCurves(DrawingContext context, Models.CommitGraph graph, double top, double bottom, double rowHeight)
         {
             var grayedPen = new Pen(new SolidColorBrush(Colors.Gray, 0.4), Models.CommitGraph.Pens[0].Thickness);
+            var grayedPenHover = new Pen(new SolidColorBrush(Colors.Gray, 0.7), Models.CommitGraph.Pens[0].Thickness);
             var onlyHighlightCurrentBranch = OnlyHighlightCurrentBranch;
 
             if (onlyHighlightCurrentBranch)
@@ -169,6 +180,7 @@ private void DrawCurves(DrawingContext context, Models.CommitGraph graph, double
                     }
                 }
 
+
                 if (!line.IsMerged && onlyHighlightCurrentBranch)
                     context.DrawGeometry(null, grayedPen, geo);
                 else

src/Views/Histories.axaml

@@ -235,6 +235,7 @@
                      Graph="{Binding Graph}"
                      DotBrush="{DynamicResource Brush.Contents}"
                      OnlyHighlightCurrentBranch="{Binding $parent[v:Histories].OnlyHighlightCurrentBranch}"
+                     HoveredCommitId="{Binding $parent[v:Histories].HoveredCommitId}"
                      HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
                      IsHitTestVisible="False"
                      ClipToBounds="True"/>

src/Views/Histories.axaml.cs

@@ -122,6 +122,15 @@ public long NavigationId
             set => SetValue(NavigationIdProperty, value);
         }
 
+        public static readonly StyledProperty<long> HoveredCommitIdProperty =
+            AvaloniaProperty.Register<Histories, long>(nameof(HoveredCommitId));
+
+        public long HoveredCommitId
+        {
+            get => GetValue(HoveredCommitIdProperty);
+            set => SetValue(HoveredCommitIdProperty, value);
+        }
+
         public static readonly StyledProperty<List<Models.Commit>> LastSelectedCommitsProperty =
             AvaloniaProperty.Register<Histories, List<Models.Commit>>(nameof(LastSelectedCommits));
 

src/Views/Repository.axaml

@@ -840,6 +840,7 @@
                          IssueTrackers="{Binding $parent[v:Repository].((vm:Repository)DataContext).IssueTrackers}"
                          OnlyHighlightCurrentBranch="{Binding $parent[v:Repository].((vm:Repository)DataContext).OnlyHighlightCurrentBranchInHistories}"
                          LastSelectedCommits="{Binding LastSelectedCommits}"
+                         HoveredCommitId="{Binding HoveredCommitId}"
                          NavigationId="{Binding NavigationId}"/>
           </DataTemplate>