feature: enhanced statistics panel (#493)

* replace the `YEAR` tab with `OVERVIEW` tab, which will analyze most recent 20K commits
* use `LiveChartsCore.SkiaSharpView.Avalonia` instead of a custom chart view

src/Commands/Statistics.cs

@@ -6,21 +6,35 @@ namespace SourceGit.Commands
     {
         public Statistics(string repo)
         {
-            _statistics = new Models.Statistics();
-
             WorkingDirectory = repo;
             Context = repo;
-            Args = $"log --date-order --branches --remotes --since=\"{_statistics.Since()}\" --pretty=format:\"%ct$%an\"";
+            Args = $"log --date-order --branches --remotes -20000 --pretty=format:\"%ct$%an\"";
         }
 
         public Models.Statistics Result()
         {
-            Exec();
+            var statistics = new Models.Statistics();
-            _statistics.Complete();
+            var rs = ReadToEnd();
-            return _statistics;
+            if (!rs.IsSuccess)
+                return statistics;
+
+            var start = 0;
+            var end = rs.StdOut.IndexOf('\n', start);
+            while (end > 0)
+            {
+                ParseLine(statistics, rs.StdOut.Substring(start, end - start));
+                start = end + 1;
+                end = rs.StdOut.IndexOf('\n', start);
+            }
+
+            if (start < rs.StdOut.Length)
+                ParseLine(statistics, rs.StdOut.Substring(start));
+
+            statistics.Complete();
+            return statistics;
         }
 
-        protected override void OnReadline(string line)
+        private void ParseLine(Models.Statistics statistics, string line)
         {
             var dateEndIdx = line.IndexOf('$', StringComparison.Ordinal);
             if (dateEndIdx == -1)
@@ -28,9 +42,7 @@ namespace SourceGit.Commands
 
             var dateStr = line.Substring(0, dateEndIdx);
             if (double.TryParse(dateStr, out var date))
-                _statistics.AddCommit(line.Substring(dateEndIdx + 1), date);
+                statistics.AddCommit(line.Substring(dateEndIdx + 1), date);
         }
-
-        private readonly Models.Statistics _statistics = null;
     }
 }

src/Models/Statistics.cs

@@ -1,122 +1,165 @@
 using System;
 using System.Collections.Generic;
 
+using LiveChartsCore;
+using LiveChartsCore.Defaults;
+using LiveChartsCore.SkiaSharpView;
+using LiveChartsCore.SkiaSharpView.Painting;
+
+using SkiaSharp;
+
 namespace SourceGit.Models
 {
-    public class StatisticsSample(string name)
+    public enum StaticsticsMode
+    {
+        All,
+        ThisMonth,
+        ThisWeek,
+    }
+
+    public class StaticsticsAuthor(string name, int count)
     {
         public string Name { get; set; } = name;
-        public int Count { get; set; } = 0;
+        public int Count { get; set; } = count;
+    }
+
+    public class StaticsticsSample(DateTime time, int count)
+    {
+        public DateTime Time { get; set; } = time;
+        public int Count { get; set; } = count;
     }
 
     public class StatisticsReport
     {
+        public static readonly string[] WEEKDAYS = ["SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"];
+
         public int Total { get; set; } = 0;
-        public List<StatisticsSample> Samples { get; set; } = new List<StatisticsSample>();
+        public List<StaticsticsAuthor> Authors { get; set; } = new List<StaticsticsAuthor>();
-        public List<StatisticsSample> ByAuthor { get; set; } = new List<StatisticsSample>();
+        public List<ISeries> Series { get; set; } = new List<ISeries>();
+        public List<Axis> XAxes { get; set; } = new List<Axis>();
+        public List<Axis> YAxes { get; set; } = new List<Axis>();
 
-        public void AddCommit(int index, string author)
+        public StatisticsReport(StaticsticsMode mode, DateTime start)
         {
-            Total++;
+            _mode = mode;
-            Samples[index].Count++;
 
-            if (_mapUsers.TryGetValue(author, out var value))
+            YAxes = [new Axis() {
+                TextSize = 10,
+                MinLimit = 0,
+                SeparatorsPaint = new SolidColorPaint(SKColors.LightSlateGray) { StrokeThickness = .6f }
+            }];
+            
+            if (mode == StaticsticsMode.ThisWeek)
             {
-                value.Count++;
+                for (int i = 0; i < 7; i++)
+                    _mapSamples.Add(start.AddDays(i), 0);
+
+                XAxes.Add(new DateTimeAxis(TimeSpan.FromDays(1), v => WEEKDAYS[(int)v.DayOfWeek]) { TextSize = 10 });
+            }
+            else if (mode == StaticsticsMode.ThisMonth)
+            {
+                var now = DateTime.Now;
+                var maxDays = DateTime.DaysInMonth(now.Year, now.Month);
+                for (int i = 0; i < maxDays; i++)
+                    _mapSamples.Add(start.AddDays(i), 0);
+
+                XAxes.Add(new DateTimeAxis(TimeSpan.FromDays(1), v => $"{v:MM/dd}") { TextSize = 10 });
             }
             else
             {
-                var sample = new StatisticsSample(author);
+                XAxes.Add(new DateTimeAxis(TimeSpan.FromDays(365), v => $"{v:yyyy/MM}") { TextSize = 10 });
-                sample.Count++;
-
-                _mapUsers.Add(author, sample);
-                ByAuthor.Add(sample);
             }
         }
 
+        public void AddCommit(DateTime time, string author)
+        {
+            Total++;
+
+            var normalized = DateTime.MinValue;
+            if (_mode == StaticsticsMode.ThisWeek || _mode == StaticsticsMode.ThisMonth)
+                normalized = time.Date;
+            else
+                normalized = new DateTime(time.Year, time.Month, 1).ToLocalTime();
+
+            if (_mapSamples.TryGetValue(normalized, out var vs))
+                _mapSamples[normalized] = vs + 1;
+            else
+                _mapSamples.Add(normalized, 1);
+
+            if (_mapUsers.TryGetValue(author, out var vu))
+                _mapUsers[author] = vu + 1;
+            else
+                _mapUsers.Add(author, 1);
+        }
+
         public void Complete()
         {
-            ByAuthor.Sort((l, r) => r.Count - l.Count);
+            var samples = new List<DateTimePoint>();
+            foreach (var kv in _mapSamples)
+                samples.Add(new DateTimePoint(kv.Key, kv.Value));
+
+            Series.Add(
+                new LineSeries<DateTimePoint>()
+                {
+                    Values = samples,
+                    Stroke = new SolidColorPaint(SKColors.Green) { StrokeThickness = 1 },
+                    GeometrySize = 8,
+                    GeometryStroke = new SolidColorPaint(SKColors.Green) { StrokeThickness = 2 }
+                }
+            );
+
+            foreach (var kv in _mapUsers)
+                Authors.Add(new StaticsticsAuthor(kv.Key, kv.Value));
+
+            Authors.Sort((l, r) => r.Count - l.Count);
+
             _mapUsers.Clear();
+            _mapSamples.Clear();
         }
 
-        private readonly Dictionary<string, StatisticsSample> _mapUsers = new Dictionary<string, StatisticsSample>();
+        private StaticsticsMode _mode = StaticsticsMode.All;
+        private Dictionary<string, int> _mapUsers = new Dictionary<string, int>();
+        private Dictionary<DateTime, int> _mapSamples = new Dictionary<DateTime, int>();
     }
 
     public class Statistics
     {
-        public StatisticsReport Year { get; set; } = new StatisticsReport();
+        public StatisticsReport All { get; set; }
-        public StatisticsReport Month { get; set; } = new StatisticsReport();
+        public StatisticsReport Month { get; set; }
-        public StatisticsReport Week { get; set; } = new StatisticsReport();
+        public StatisticsReport Week { get; set; }
 
         public Statistics()
         {
-            _today = DateTime.Today;
+            _today = DateTime.Now.ToLocalTime().Date;
-            _thisWeekStart = _today.AddSeconds(-(int)_today.DayOfWeek * 3600 * 24 - _today.Hour * 3600 - _today.Minute * 60 - _today.Second);
+            _thisWeekStart = _today.AddSeconds(-(int)_today.DayOfWeek * 3600 * 24);
-            _thisWeekEnd = _thisWeekStart.AddDays(7);
+            _thisMonthStart = _today.AddDays(1 - _today.Day);
 
-            for (int i = 0; i < 12; i++)
+            All = new StatisticsReport(StaticsticsMode.All, DateTime.MinValue);
-                Year.Samples.Add(new StatisticsSample(""));
+            Month = new StatisticsReport(StaticsticsMode.ThisMonth, _thisMonthStart);
-
+            Week = new StatisticsReport(StaticsticsMode.ThisWeek, _thisWeekStart);
-            var monthDays = DateTime.DaysInMonth(_today.Year, _today.Month);
-            for (int i = 0; i < monthDays; i++)
-                Month.Samples.Add(new StatisticsSample($"{i + 1}"));
-
-            string[] weekDayNames = ["SUN", "MON", "TUE", "WED", "THU", "FRI", "SAT"];
-            for (int i = 0; i < weekDayNames.Length; i++)
-                Week.Samples.Add(new StatisticsSample(weekDayNames[i]));
-        }
-
-        public string Since()
-        {
-            return _today.AddMonths(-11).ToString("yyyy-MM-01 00:00:00");
         }
 
         public void AddCommit(string author, double timestamp)
         {
             var time = DateTime.UnixEpoch.AddSeconds(timestamp).ToLocalTime();
-            if (time.CompareTo(_thisWeekStart) >= 0 && time.CompareTo(_thisWeekEnd) < 0)
+            if (time >= _thisWeekStart)
-                Week.AddCommit((int)time.DayOfWeek, author);
+                Week.AddCommit(time, author);
 
-            if (time.Month == _today.Month)
+            if (time >= _thisMonthStart)
-                Month.AddCommit(time.Day - 1, author);
+                Month.AddCommit(time, author);
 
-            Year.AddCommit(time.Month - 1, author);
+            All.AddCommit(time, author);
         }
 
         public void Complete()
         {
-            Year.Complete();
+            All.Complete();
             Month.Complete();
             Week.Complete();
-
-            // Year is start from 11 months ago from now.
-            var thisYear = _today.Year;
-            var start = _today.AddMonths(-11);
-            if (start.Month == 1)
-            {
-                for (int i = 0; i < 12; i++)
-                    Year.Samples[i].Name = $"{thisYear}/{i + 1:00}";
-            }
-            else
-            {
-                var lastYearIdx = start.Month - 1;
-                var lastYearMonths = Year.Samples.GetRange(lastYearIdx, 12 - lastYearIdx);
-                for (int i = 0; i < lastYearMonths.Count; i++)
-                    lastYearMonths[i].Name = $"{thisYear - 1}/{lastYearIdx + i + 1:00}";
-
-                var thisYearMonths = Year.Samples.GetRange(0, lastYearIdx);
-                for (int i = 0; i < thisYearMonths.Count; i++)
-                    thisYearMonths[i].Name = $"{thisYear}/{i + 1:00}";
-
-                Year.Samples.Clear();
-                Year.Samples.AddRange(lastYearMonths);
-                Year.Samples.AddRange(thisYearMonths);
-            }
         }
 
         private readonly DateTime _today;
+        private readonly DateTime _thisMonthStart;
         private readonly DateTime _thisWeekStart;
-        private readonly DateTime _thisWeekEnd;
     }
 }

src/Resources/Locales/de_DE.axaml

@@ -567,7 +567,6 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">COMMITTER</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">MONAT</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">WOCHE</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">JAHR</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">COMMITS: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">AUTOREN: </x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">SUBMODULE</x:String>

src/Resources/Locales/en_US.axaml

@@ -571,9 +571,9 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">COMMITTER</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">MONTH</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">WEEK</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">YEAR</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">COMMITS: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">AUTHORS: </x:String>
+  <x:String x:Key="Text.Statistics.Overview" xml:space="preserve">OVERVIEW</x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">SUBMODULES</x:String>
   <x:String x:Key="Text.Submodule.Add" xml:space="preserve">Add Submodule</x:String>
   <x:String x:Key="Text.Submodule.CopyPath" xml:space="preserve">Copy Relative Path</x:String>

src/Resources/Locales/fr_FR.axaml

@@ -552,7 +552,6 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">COMMITTER</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">MONTH</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">WEEK</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">YEAR</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">COMMITS: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">AUTHORS: </x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">SUBMODULES</x:String>

src/Resources/Locales/pt_BR.axaml

@@ -545,7 +545,6 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">COMMITTER</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">MÊS</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">SEMANA</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">ANO</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">COMMITS: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">AUTORES: </x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">SUBMÓDULOS</x:String>

src/Resources/Locales/ru_RU.axaml

@@ -571,7 +571,6 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">ФИКСАТОРЫ</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">МЕСЯЦ</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">НЕДЕЛЯ</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">ГОД</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">ФИКСАЦИИ: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">АВТОРЫ: </x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">ПОДМОДУЛИ</x:String>

src/Resources/Locales/zh_CN.axaml

@@ -569,9 +569,9 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">提交者</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">本月</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">本周</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">最近一年</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">提交次数: </x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">贡献者人数: </x:String>
+  <x:String x:Key="Text.Statistics.Overview" xml:space="preserve">总览</x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">子模块</x:String>
   <x:String x:Key="Text.Submodule.Add" xml:space="preserve">添加子模块</x:String>
   <x:String x:Key="Text.Submodule.CopyPath" xml:space="preserve">复制路径</x:String>

src/Resources/Locales/zh_TW.axaml

@@ -574,9 +574,9 @@
   <x:String x:Key="Text.Statistics.Committer" xml:space="preserve">提交者</x:String>
   <x:String x:Key="Text.Statistics.ThisMonth" xml:space="preserve">本月</x:String>
   <x:String x:Key="Text.Statistics.ThisWeek" xml:space="preserve">本週</x:String>
-  <x:String x:Key="Text.Statistics.MostRecentYear" xml:space="preserve">最近一年</x:String>
   <x:String x:Key="Text.Statistics.TotalCommits" xml:space="preserve">提交次數:</x:String>
   <x:String x:Key="Text.Statistics.TotalAuthors" xml:space="preserve">貢獻者人數:</x:String>
+  <x:String x:Key="Text.Statistics.Overview" xml:space="preserve">總覽</x:String>
   <x:String x:Key="Text.Submodule" xml:space="preserve">子模組</x:String>
   <x:String x:Key="Text.Submodule.Add" xml:space="preserve">新增子模組</x:String>
   <x:String x:Key="Text.Submodule.CopyPath" xml:space="preserve">複製路徑</x:String>

src/SourceGit.csproj

@@ -45,7 +45,8 @@
     <PackageReference Include="Avalonia.Diagnostics" Version="11.1.3" Condition="'$(Configuration)' == 'Debug'" />
     <PackageReference Include="Avalonia.AvaloniaEdit" Version="11.1.0" />
     <PackageReference Include="AvaloniaEdit.TextMate" Version="11.1.0" />
-    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />    
+    <PackageReference Include="LiveChartsCore.SkiaSharpView.Avalonia" Version="2.0.0-rc3.3" />
     <PackageReference Include="TextMateSharp" Version="1.0.63" />
     <PackageReference Include="TextMateSharp.Grammars" Version="1.0.63" />
   </ItemGroup>

src/ViewModels/Statistics.cs

@@ -50,7 +50,7 @@ namespace SourceGit.ViewModels
             switch (_selectedIndex)
             {
                 case 0:
-                    SelectedReport = _data.Year;
+                    SelectedReport = _data.All;
                     break;
                 case 1:
                     SelectedReport = _data.Month;

src/Views/Statistics.axaml

@@ -5,6 +5,7 @@
                     xmlns:m="using:SourceGit.Models"
                     xmlns:vm="using:SourceGit.ViewModels"
                     xmlns:v="using:SourceGit.Views"
+                    xmlns:lvc="using:LiveChartsCore.SkiaSharpView.Avalonia"
                     mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
                     x:Class="SourceGit.Views.Statistics"
                     x:DataType="vm:Statistics"
@@ -62,6 +63,7 @@
 
       <ListBox.Styles>
         <Style Selector="ListBoxItem">
+          <Setter Property="Width" Value="110"/>
           <Setter Property="Height" Value="28"/>
           <Setter Property="Padding" Value="0"/>
           <Setter Property="Background" Value="Transparent"/>
@@ -90,6 +92,7 @@
         <Style Selector="TextBlock.view_mode_switcher">
           <Setter Property="FontWeight" Value="Bold"/>
           <Setter Property="Foreground" Value="{DynamicResource Brush.FG2}"/>
+          <Setter Property="HorizontalAlignment" Value="Center"/>
         </Style>
 
         <Style Selector="ListBoxItem:pointerover TextBlock.view_mode_switcher">
@@ -103,7 +106,7 @@
 
       <ListBoxItem>
         <Border Classes="switcher_bg">
-          <TextBlock Classes="view_mode_switcher" Text="{DynamicResource Text.Statistics.MostRecentYear}"/>
+          <TextBlock Classes="view_mode_switcher" Text="{DynamicResource Text.Statistics.Overview}"/>
         </Border>
       </ListBoxItem>
 
@@ -128,7 +131,7 @@
             <Grid Grid.Column="0" RowDefinitions="*,16">
               <!-- Table By Committer -->
               <ListBox Grid.Column="0"
-                       ItemsSource="{Binding ByAuthor}"
+                       ItemsSource="{Binding Authors}"
                        SelectionMode="Single"
                        BorderThickness="1"
                        BorderBrush="{DynamicResource Brush.Border2}"
@@ -150,7 +153,7 @@
                 </ListBox.ItemsPanel>
 
                 <ListBox.ItemTemplate>
-                  <DataTemplate DataType="m:StatisticsSample">
+                  <DataTemplate DataType="m:StaticsticsAuthor">
                     <Border BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border2}">
                       <Grid ColumnDefinitions="*,100">
                         <Border Grid.Column="0" Padding="8,0" ClipToBounds="True">
@@ -170,7 +173,7 @@
                 <!-- Total Committers -->
                 <StackPanel Grid.Column="0" Orientation="Horizontal" VerticalAlignment="Bottom">
                   <TextBlock Classes="primary" Text="{DynamicResource Text.Statistics.TotalAuthors}" FontSize="11" Foreground="{DynamicResource Brush.FG2}"/>
-                  <TextBlock Classes="primary" Text="{Binding ByAuthor.Count}" FontSize="11" Margin="4,0,0,0"/>
+                  <TextBlock Classes="primary" Text="{Binding Authors.Count}" FontSize="11" Margin="4,0,0,0"/>
                 </StackPanel>
 
                 <!-- Total Commits -->
@@ -182,12 +185,7 @@
             </Grid>
 
             <!-- Graph -->
-            <v:Chart Grid.Column="1"
+            <lvc:CartesianChart Grid.Column="1" Margin="16" Series="{Binding Series}" XAxes="{Binding XAxes}" YAxes="{Binding YAxes}" ZoomMode="X"/>
-                     Margin="16"
-                     LabelBrush="{DynamicResource Brush.FG1}"
-                     LineBrush="{DynamicResource Brush.Border2}"
-                     ShapeBrush="{DynamicResource Brush.Accent}"
-                     Samples="{Binding Samples}"/>
           </Grid>
         </DataTemplate>
       </ContentControl.DataTemplates>

src/Views/Statistics.axaml.cs

@@ -1,220 +1,7 @@
-using System;
-using System.Collections.Generic;
-using System.Globalization;
-
-using Avalonia;
-using Avalonia.Controls;
 using Avalonia.Input;
-using Avalonia.Media;
 
 namespace SourceGit.Views
 {
-    public class Chart : Control
-    {
-        public static readonly StyledProperty<IBrush> LabelBrushProperty =
-            AvaloniaProperty.Register<Chart, IBrush>(nameof(LabelBrush), Brushes.Black);
-
-        public IBrush LabelBrush
-        {
-            get => GetValue(LabelBrushProperty);
-            set => SetValue(LabelBrushProperty, value);
-        }
-
-        public static readonly StyledProperty<IBrush> LineBrushProperty =
-            AvaloniaProperty.Register<Chart, IBrush>(nameof(LineBrush), Brushes.Gray);
-
-        public IBrush LineBrush
-        {
-            get => GetValue(LineBrushProperty);
-            set => SetValue(LineBrushProperty, value);
-        }
-
-        public static readonly StyledProperty<IBrush> ShapeBrushProperty =
-            AvaloniaProperty.Register<Chart, IBrush>(nameof(ShapeBrush), Brushes.Gray);
-
-        public IBrush ShapeBrush
-        {
-            get => GetValue(ShapeBrushProperty);
-            set => SetValue(ShapeBrushProperty, value);
-        }
-
-        public static readonly StyledProperty<List<Models.StatisticsSample>> SamplesProperty =
-            AvaloniaProperty.Register<Chart, List<Models.StatisticsSample>>(nameof(Samples));
-
-        public List<Models.StatisticsSample> Samples
-        {
-            get => GetValue(SamplesProperty);
-            set => SetValue(SamplesProperty, value);
-        }
-
-        static Chart()
-        {
-            SamplesProperty.Changed.AddClassHandler<Chart>((c, _) =>
-            {
-                c._hitBoxes.Clear();
-                c._lastHitIdx = -1;
-                c.InvalidateMeasure();
-            });
-        }
-
-        public override void Render(DrawingContext context)
-        {
-            if (Samples == null || Bounds.Width == 0)
-                return;
-
-            var samples = Samples;
-            int maxV = 0;
-            foreach (var s in samples)
-            {
-                if (maxV < s.Count)
-                    maxV = s.Count;
-            }
-
-            if (maxV < 5)
-                maxV = 5;
-            else if (maxV < 10)
-                maxV = 10;
-            else if (maxV < 50)
-                maxV = 50;
-            else if (maxV < 100)
-                maxV = 100;
-            else if (maxV < 200)
-                maxV = 200;
-            else if (maxV < 500)
-                maxV = 500;
-            else
-                maxV = (int)Math.Ceiling(maxV / 500.0) * 500;
-
-            var typeface = new Typeface("fonts:SourceGit#JetBrains Mono");
-            var pen = new Pen(LineBrush);
-            var width = Bounds.Width;
-            var height = Bounds.Height;
-
-            // Draw coordinate
-            var maxLabel = new FormattedText($"{maxV}", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeface, 12.0, LabelBrush);
-            var horizonStart = maxLabel.Width + 8;
-            var labelHeight = maxLabel.Height;
-            var bg = this.FindResource("Brush.Contents") as IBrush;
-            context.DrawText(maxLabel, new Point(0, -maxLabel.Height * 0.5));
-            context.DrawRectangle(bg, pen, new Rect(horizonStart, 0, width - horizonStart, height - labelHeight));
-
-            if (samples.Count == 0)
-                return;
-
-            // Draw horizontal lines
-            var stepX = (width - horizonStart) / samples.Count;
-            var stepV = (height - labelHeight) / 5;
-            var labelStepV = maxV / 5;
-            var gridPen = new Pen(LineBrush, 1, new DashStyle() { Dashes = [2, 2, 0, 2], Offset = 1 });
-            for (int i = 1; i < 5; i++)
-            {
-                var vLabel = new FormattedText(
-                    $"{maxV - i * labelStepV}",
-                    CultureInfo.CurrentCulture,
-                    FlowDirection.LeftToRight,
-                    typeface,
-                    12.0,
-                    LabelBrush);
-
-                var dashHeight = i * stepV;
-                var vy = Math.Max(0, dashHeight - vLabel.Height * 0.5);
-                using (context.PushOpacity(.1))
-                {
-                    context.DrawLine(gridPen, new Point(horizonStart + 1, dashHeight), new Point(width, dashHeight));
-                }
-                context.DrawText(vLabel, new Point(horizonStart - vLabel.Width - 8, vy));
-            }
-
-            // Calculate hit boxes
-            if (_hitBoxes.Count == 0)
-            {
-                var shapeWidth = Math.Min(32, stepX - 4);
-                for (int i = 0; i < samples.Count; i++)
-                {
-                    var h = samples[i].Count * (height - labelHeight) / maxV;
-                    var x = horizonStart + 1 + stepX * i + (stepX - shapeWidth) * 0.5;
-                    var y = height - labelHeight - h;
-                    _hitBoxes.Add(new Rect(x, y, shapeWidth, h - 1));
-                }
-            }
-
-            // Draw shapes
-            for (int i = 0; i < samples.Count; i++)
-            {
-                var hLabel = new FormattedText(
-                    samples[i].Name,
-                    CultureInfo.CurrentCulture,
-                    FlowDirection.LeftToRight,
-                    typeface,
-                    10.0,
-                    LabelBrush);
-                var rect = _hitBoxes[i];
-                var xLabel = rect.X - (hLabel.Width - rect.Width) * 0.5;
-                var yLabel = height - labelHeight + 4;
-
-                context.DrawRectangle(ShapeBrush, null, rect);
-
-                var test = (stepX - 4) / hLabel.Width;
-                if (test < 1.0)
-                {
-                    var matrix = Matrix.CreateRotation(Math.Acos(test)) * Matrix.CreateTranslation(xLabel + hLabel.Width * 0.5, yLabel);
-                    using (context.PushTransform(matrix))
-                        context.DrawText(hLabel, new Point(0, 0));
-                }
-                else
-                {
-                    context.DrawText(hLabel, new Point(xLabel, yLabel));
-                }
-            }
-
-            // Draw labels on hover
-            if (_lastHitIdx >= 0 && _lastHitIdx < samples.Count)
-            {
-                var rect = _hitBoxes[_lastHitIdx];
-                var tooltip = new FormattedText(
-                        $"{samples[_lastHitIdx].Count}",
-                        CultureInfo.CurrentCulture,
-                        FlowDirection.LeftToRight,
-                        typeface,
-                        12.0,
-                        LabelBrush);
-
-                var tx = rect.X - (tooltip.Width - rect.Width) * 0.5;
-                var ty = rect.Y - tooltip.Height - 4;
-                context.DrawText(tooltip, new Point(tx, ty));
-            }
-        }
-
-        protected override void OnPointerMoved(PointerEventArgs e)
-        {
-            base.OnPointerMoved(e);
-
-            var p = e.GetPosition(this);
-            for (int i = 0; i < _hitBoxes.Count; i++)
-            {
-                if (_hitBoxes[i].Contains(p))
-                {
-                    if (_lastHitIdx != i)
-                    {
-                        _lastHitIdx = i;
-                        InvalidateVisual();
-                    }
-
-                    return;
-                }
-            }
-
-            if (_lastHitIdx != -1)
-            {
-                _lastHitIdx = -1;
-                InvalidateVisual();
-            }
-        }
-
-        private readonly List<Rect> _hitBoxes = new List<Rect>();
-        private int _lastHitIdx = -1;
-    }
-
     public partial class Statistics : ChromelessWindow
     {
         public Statistics()