refactor: use converters instead of store so many data in Models.Commit

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/App.axaml.cs

@@ -247,8 +247,6 @@ public static void SetTheme(string theme, string themeOverridesFile)
                     else
                         Models.CommitGraph.SetDefaultPens(overrides.GraphPenThickness);
 
-                    Models.Commit.OpacityForNotMerged = overrides.OpacityForNotMergedCommits;
-
                     app.Resources.MergedDictionaries.Add(resDic);
                     app._themeOverrides = resDic;
                 }

src/Converters/BoolConverters.cs

@@ -9,6 +9,9 @@ public static class BoolConverters
             new FuncValueConverter<bool, double>(x => x ? 200 : double.NaN);
 
         public static readonly FuncValueConverter<bool, FontWeight> IsBoldToFontWeight =
-            new FuncValueConverter<bool, FontWeight>(x => x ? FontWeight.Bold : FontWeight.Normal);
+            new FuncValueConverter<bool, FontWeight>(x => x ? FontWeight.Bold : FontWeight.Regular);
+
+        public static readonly FuncValueConverter<bool, double> IsMergedToOpacity =
+            new FuncValueConverter<bool, double>(x => x ? 1 : 0.65);
     }
 }

src/Converters/DoubleConverters.cs

@@ -1,4 +1,5 @@
-using Avalonia.Data.Converters;
+using Avalonia;
+using Avalonia.Data.Converters;
 
 namespace SourceGit.Converters
 {
@@ -15,5 +16,8 @@ public static class DoubleConverters
 
         public static readonly FuncValueConverter<double, string> OneMinusToPercentage =
             new FuncValueConverter<double, string>(v => ((1.0 - v) * 100).ToString("F3") + "%");
+
+        public static readonly FuncValueConverter<double, Thickness> ToLeftMargin =
+            new FuncValueConverter<double, Thickness>(v => new Thickness(v, 0, 0, 0));
     }
 }

src/Models/Commit.cs

@@ -1,9 +1,6 @@
 using System;
 using System.Collections.Generic;
 
-using Avalonia;
-using Avalonia.Media;
-
 namespace SourceGit.Models
 {
     public enum CommitSearchMethod
@@ -18,15 +15,8 @@ public enum CommitSearchMethod
 
     public class Commit
     {
-        // As retrieved by: git mktree </dev/null
         public const string EmptyTreeSHA1 = "4b825dc642cb6eb9a060e54bf8d69288fbee4904";
 
-        public static double OpacityForNotMerged
-        {
-            get;
-            set;
-        } = 0.65;
-
         public string SHA { get; set; } = string.Empty;
         public User Author { get; set; } = User.Invalid;
         public ulong AuthorTime { get; set; } = 0;
@@ -35,22 +25,19 @@ public static double OpacityForNotMerged
         public string Subject { get; set; } = string.Empty;
         public List<string> Parents { get; set; } = new();
         public List<Decorator> Decorators { get; set; } = new();
-        public bool HasDecorators => Decorators.Count > 0;
+
+        public bool IsMerged { get; set; } = false;
+        public int Color { get; set; } = 0;
+        public double LeftMargin { get; set; } = 0;
 
         public string AuthorTimeStr => DateTime.UnixEpoch.AddSeconds(AuthorTime).ToLocalTime().ToString(DateTimeFormat.Active.DateTime);
         public string CommitterTimeStr => DateTime.UnixEpoch.AddSeconds(CommitterTime).ToLocalTime().ToString(DateTimeFormat.Active.DateTime);
         public string AuthorTimeShortStr => DateTime.UnixEpoch.AddSeconds(AuthorTime).ToLocalTime().ToString(DateTimeFormat.Active.DateOnly);
         public string CommitterTimeShortStr => DateTime.UnixEpoch.AddSeconds(CommitterTime).ToLocalTime().ToString(DateTimeFormat.Active.DateOnly);
 
-        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;
-
-        public int Color { get; set; } = 0;
-        public double Opacity => IsMerged ? 1 : OpacityForNotMerged;
-        public FontWeight FontWeight => IsCurrentHead ? FontWeight.Bold : FontWeight.Regular;
-        public Thickness Margin { get; set; } = new(0);
-        public IBrush Brush => CommitGraph.Pens[Color].Brush;
+        public bool HasDecorators => Decorators.Count > 0;
 
         public string GetFriendlyName()
         {

src/Models/CommitGraph.cs

@@ -199,8 +199,8 @@ public static CommitGraph Parse(List<Commit> commits, bool firstParentOnlyEnable
 
                 // Margins & merge state (used by Views.Histories).
                 commit.IsMerged = isMerged;
-                commit.Margin = new Thickness(Math.Max(offsetX, maxOffsetOld) + halfWidth + 2, 0, 0, 0);
                 commit.Color = dotColor;
+                commit.LeftMargin = Math.Max(offsetX, maxOffsetOld) + halfWidth + 2;
             }
 
             // Deal with curves haven't ended yet.

src/Views/CommitRefsPresenter.cs

@@ -183,7 +183,7 @@ protected override Size MeasureOverride(Size availableSize)
                 var typeface = new Typeface(FontFamily);
                 var typefaceBold = new Typeface(FontFamily, FontStyle.Normal, FontWeight.Bold);
                 var fg = Foreground;
-                var normalBG = UseGraphColor ? commit.Brush : Brushes.Gray;
+                var normalBG = UseGraphColor ? Models.CommitGraph.Pens[commit.Color].Brush : Brushes.Gray;
                 var labelSize = FontSize;
                 var requiredHeight = 16.0;
                 var x = 0.0;

src/Views/Histories.axaml

@@ -103,7 +103,7 @@
 
             <DataGridTemplateColumn.CellTemplate>
               <DataTemplate DataType="m:Commit">
-                <Border Padding="{Binding Margin}" ClipToBounds="True" Background="Transparent">
+                <Border Padding="{Binding LeftMargin, Converter={x:Static c:DoubleConverters.ToLeftMargin}}" ClipToBounds="True" Background="Transparent">
                   <Grid ColumnDefinitions="Auto,Auto,Auto,*" Margin="2,0,4,0" ClipToBounds="True">
                     <v:CommitStatusIndicator Grid.Column="0"
                                              CurrentBranch="{Binding $parent[v:Histories].CurrentBranch}"
@@ -140,8 +140,8 @@
                                               LinkForeground="{DynamicResource Brush.Link}"
                                               Subject="{Binding Subject}"
                                               IssueTrackers="{Binding $parent[v:Histories].IssueTrackers}"
-                                              FontWeight="{Binding FontWeight}"
-                                              Opacity="{Binding Opacity}"/>
+                                              FontWeight="{Binding IsCurrentHead, Converter={x:Static c:BoolConverters.IsBoldToFontWeight}}"
+                                              Opacity="{Binding IsMerged, Converter={x:Static c:BoolConverters.IsMergedToOpacity}}"/>
                   </Grid>
                 </Border>
               </DataTemplate>
@@ -167,15 +167,15 @@
                             HorizontalAlignment="Left"
                             VerticalAlignment="Center"
                             User="{Binding Author}"
-                            Opacity="{Binding Opacity}"
+                            Opacity="{Binding IsMerged, Converter={x:Static c:BoolConverters.IsMergedToOpacity}}"
                             IsHitTestVisible="False"/>
 
                   <Border Grid.Column="1" Padding="8,0,4,0" ClipToBounds="True">
                     <TextBlock Classes="primary"
                                Text="{Binding Author.Name}"
-                               FontWeight="{Binding FontWeight}"
-                               HorizontalAlignment="Left"
-                               Opacity="{Binding Opacity}"/>
+                               FontWeight="{Binding IsCurrentHead, Converter={x:Static c:BoolConverters.IsBoldToFontWeight}}"
+                               Opacity="{Binding IsMerged, Converter={x:Static c:BoolConverters.IsMergedToOpacity}}"
+                               HorizontalAlignment="Left"/>
                   </Border>
                 </Grid>
               </DataTemplate>
@@ -192,8 +192,8 @@
                 <Border Padding="8,0,0,0" Background="Transparent" ClipToBounds="True">
                   <TextBlock Classes="primary"
                              Text="{Binding SHA, Converter={x:Static c:StringConverters.ToShortSHA}}"
-                             FontWeight="{Binding FontWeight}"
-                             Opacity="{Binding Opacity}"/>
+                             FontWeight="{Binding IsCurrentHead, Converter={x:Static c:BoolConverters.IsBoldToFontWeight}}"
+                             Opacity="{Binding IsMerged, Converter={x:Static c:BoolConverters.IsMergedToOpacity}}"/>
                 </Border>
               </DataTemplate>
             </DataGridTemplateColumn.CellTemplate>
@@ -217,8 +217,8 @@
               <DataTemplate DataType="m:Commit">
                 <Border Padding="8,0" Background="Transparent" ClipToBounds="True">
                   <v:CommitTimeTextBlock Classes="primary"
-                                         FontWeight="{Binding FontWeight}"
-                                         Opacity="{Binding Opacity}"
+                                         FontWeight="{Binding IsCurrentHead, Converter={x:Static c:BoolConverters.IsBoldToFontWeight}}"
+                                         Opacity="{Binding IsMerged, Converter={x:Static c:BoolConverters.IsMergedToOpacity}}"
                                          UseAuthorTime="{Binding Source={x:Static vm:Preferences.Instance}, Path=ShowAuthorTimeInGraph, Mode=OneWay}"
                                          ShowAsDateTime="{Binding Source={x:Static vm:Preferences.Instance}, Path=!DisplayTimeAsPeriodInHistories}"
                                          DateTimeFormat="{Binding Source={x:Static vm:Preferences.Instance}, Path=DateTimeFormat}"/>