feature<Statistics>: finish statistiscs

src/Views/Repository.axaml

@@ -81,6 +81,10 @@
             <Path Width="14" Height="14" Data="{StaticResource Icons.Clean}"/>
           </Button>
 
+          <Button Classes="icon_button" Width="32" Click="OpenStatistics" ToolTip.Tip="{DynamicResource Text.Repository.Statistics}">
+            <Path Width="14" Height="14" Data="{StaticResource Icons.Statistics}"/>
+          </Button>
+
           <Button Classes="icon_button" Width="32" Command="{Binding OpenConfigure}" ToolTip.Tip="{DynamicResource Text.Repository.Configure}">
             <Path Width="15" Height="15" Data="{StaticResource Icons.Settings1}"/>
           </Button>

src/Views/Repository.axaml.cs

@@ -188,6 +188,14 @@ namespace SourceGit.Views {
                 }
             }
         }
+
+        private async void OpenStatistics(object sender, RoutedEventArgs e) {
+            if (DataContext is ViewModels.Repository repo) {
+                var dialog = new Statistics() { DataContext = new ViewModels.Statistics(repo.FullPath) };
+                await dialog.ShowDialog(TopLevel.GetTopLevel(this) as Window);
+                e.Handled = true;
+            }
+        }
     }
 }
 

src/Views/Statistics.axaml

@@ -0,0 +1,222 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:m="using:SourceGit.Models"
+        xmlns:vm="using:SourceGit.ViewModels"
+        xmlns:v="using:SourceGit.Views"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="SourceGit.Views.Statistics"
+        x:DataType="vm:Statistics"
+        Title="{DynamicResource Text.Statistics}"
+        Background="{DynamicResource Brush.Window}"
+        Width="800" Height="450"
+        WindowStartupLocation="CenterOwner"
+        CanResize="False"
+        ExtendClientAreaToDecorationsHint="True"
+        ExtendClientAreaChromeHints="NoChrome">
+  <Grid RowDefinitions="30,*">
+    <!-- Title bar -->
+    <Grid Grid.Row="0" ColumnDefinitions="Auto,*,Auto">
+      <Border Grid.Column="0" Grid.ColumnSpan="3"
+              Background="{DynamicResource Brush.TitleBar}"
+              BorderThickness="0,0,0,1" BorderBrush="{DynamicResource Brush.Border0}"
+              IsHitTestVisible="False"/>
+      
+      <Path Grid.Column="0"
+            Width="14" Height="14"
+            Margin="10,0,0,0"
+            Data="{StaticResource Icons.Statistics}"
+            IsVisible="{Binding Source={x:Static vm:Preference.Instance}, Path=UseMacOSStyle, Converter={x:Static BoolConverters.Not}}"/>
+
+      <Grid Grid.Column="0" Classes="caption_button_box" Margin="2,4,0,0" IsVisible="{Binding Source={x:Static vm:Preference.Instance}, Path=UseMacOSStyle}">
+        <Button Classes="caption_button_macos" Click="CloseWindow">
+          <Grid>
+            <Ellipse Fill="{DynamicResource Brush.MacOS.Close}"/>
+            <Path Height="6" Width="6" Stretch="Fill" Fill="#404040" Stroke="#404040" StrokeThickness="1" Data="{StaticResource Icons.Window.Close}"/>
+          </Grid>
+        </Button>
+      </Grid>
+
+      <TextBlock Grid.Column="0" Grid.ColumnSpan="3"
+                 Classes="bold"
+                 Text="{DynamicResource Text.Statistics}"
+                 HorizontalAlignment="Center" VerticalAlignment="Center"
+                 IsHitTestVisible="False"/>
+
+      <Button Grid.Column="2"
+              Classes="caption_button"
+              Click="CloseWindow"
+              IsVisible="{Binding Source={x:Static vm:Preference.Instance}, Path=UseMacOSStyle, Converter={x:Static BoolConverters.Not}}">
+        <Path Data="{StaticResource Icons.Window.Close}"/>
+      </Button>
+    </Grid>
+
+    <!-- Body -->
+    <TabControl Grid.Row="1" Margin="0,8,0,0">
+      <TabControl.Styles>
+        <Style Selector="TabControl /template/ ItemsPresenter#PART_ItemsPresenter">
+          <Setter Property="HorizontalAlignment" Value="Center"/>
+        </Style>
+      </TabControl.Styles>
+      
+      <TabItem>
+        <TabItem.Header>
+          <TextBlock Classes="tab_header" Text="{DynamicResource Text.Statistics.ThisYear}"/>
+        </TabItem.Header>
+
+        <Grid RowDefinitions="*,32" ColumnDefinitions="Auto,*" Margin="8">
+          <!-- Table By Author -->
+          <DataGrid Grid.Row="0" Grid.Column="0"
+                    ItemsSource="{Binding Data.YearByAuthor}"
+                    SelectionMode="Single"
+                    CanUserReorderColumns="False"
+                    CanUserResizeColumns="False"
+                    CanUserSortColumns="False"
+                    HeadersVisibility="Column"
+                    GridLinesVisibility="All"
+                    BorderThickness="1"
+                    BorderBrush="{DynamicResource Brush.Border1}"
+                    Background="{DynamicResource Brush.Contents}"
+                    IsReadOnly="True"
+                    RowHeight="26"
+                    HorizontalScrollBarVisibility="Disabled"
+                    VerticalScrollBarVisibility="Auto">
+            <DataGrid.Columns>
+              <DataGridTextColumn Width="150" Header="{DynamicResource Text.Statistics.AuthorName}" Binding="{Binding Name}"/>
+              <DataGridTextColumn Width="100" Header="{DynamicResource Text.Statistics.CommitAmount}" Binding="{Binding Count}"/>
+            </DataGrid.Columns>
+          </DataGrid>
+
+          <!-- Total Authors -->
+          <StackPanel Grid.Row="1" Grid.Column="0" Orientation="Horizontal">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalAuthors}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.YearByAuthor.Count}" Margin="4,0,0,0"/>
+          </StackPanel>
+
+          <!-- Graph -->
+          <v:Chart Grid.Row="0" Grid.Column="1"
+                   Margin="16,8,0,0"
+                   FontFamily="{StaticResource JetBrainsMono}"
+                   LineBrush="{DynamicResource Brush.FG1}"
+                   ShapeBrush="{DynamicResource Brush.Accent1}"
+                   Samples="{Binding Data.Year}"/>
+
+          <!-- Total Commits -->
+          <StackPanel Grid.Row="1" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalCommits}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.TotalYear}" Margin="4,0,0,0"/>
+          </StackPanel>
+        </Grid>
+      </TabItem>
+
+      <TabItem>
+        <TabItem.Header>
+          <TextBlock Classes="tab_header" Text="{DynamicResource Text.Statistics.ThisMonth}"/>
+        </TabItem.Header>
+
+        <Grid RowDefinitions="*,32" ColumnDefinitions="Auto,*" Margin="8">
+          <!-- Table By Author -->
+          <DataGrid Grid.Row="0" Grid.Column="0"
+                    ItemsSource="{Binding Data.MonthByAuthor}"
+                    SelectionMode="Single"
+                    CanUserReorderColumns="False"
+                    CanUserResizeColumns="False"
+                    CanUserSortColumns="False"
+                    HeadersVisibility="Column"
+                    GridLinesVisibility="All"
+                    BorderThickness="1"
+                    BorderBrush="{DynamicResource Brush.Border1}"
+                    Background="{DynamicResource Brush.Contents}"
+                    IsReadOnly="True"
+                    RowHeight="26"
+                    HorizontalScrollBarVisibility="Disabled"
+                    VerticalScrollBarVisibility="Auto">
+            <DataGrid.Columns>
+              <DataGridTextColumn Width="150" Header="{DynamicResource Text.Statistics.AuthorName}" Binding="{Binding Name}"/>
+              <DataGridTextColumn Width="100" Header="{DynamicResource Text.Statistics.CommitAmount}" Binding="{Binding Count}"/>
+            </DataGrid.Columns>
+          </DataGrid>
+
+          <!-- Total Authors -->
+          <StackPanel Grid.Row="1" Grid.Column="0" Orientation="Horizontal">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalAuthors}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.MonthByAuthor.Count}" Margin="4,0,0,0"/>
+          </StackPanel>
+
+          <!-- Graph -->
+          <v:Chart Grid.Row="0" Grid.Column="1"
+                   Margin="16,8,0,0"
+                   FontFamily="{StaticResource JetBrainsMono}"
+                   LineBrush="{DynamicResource Brush.FG1}"
+                   ShapeBrush="{DynamicResource Brush.Accent1}"
+                   Samples="{Binding Data.Month}"/>
+
+          <!-- Total Commits -->
+          <StackPanel Grid.Row="1" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalCommits}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.TotalMonth}" Margin="4,0,0,0"/>
+          </StackPanel>
+        </Grid>
+      </TabItem>
+
+      <TabItem>
+        <TabItem.Header>
+          <TextBlock Classes="tab_header" Text="{DynamicResource Text.Statistics.ThisWeek}"/>
+        </TabItem.Header>
+
+        <Grid RowDefinitions="*,32" ColumnDefinitions="Auto,*" Margin="8">
+          <!-- Table By Author -->
+          <DataGrid Grid.Row="0" Grid.Column="0"
+                    ItemsSource="{Binding Data.WeekByAuthor}"
+                    SelectionMode="Single"
+                    CanUserReorderColumns="False"
+                    CanUserResizeColumns="False"
+                    CanUserSortColumns="False"
+                    HeadersVisibility="Column"
+                    GridLinesVisibility="All"
+                    BorderThickness="1"
+                    BorderBrush="{DynamicResource Brush.Border1}"
+                    Background="{DynamicResource Brush.Contents}"
+                    IsReadOnly="True"
+                    RowHeight="26"
+                    HorizontalScrollBarVisibility="Disabled"
+                    VerticalScrollBarVisibility="Auto">
+            <DataGrid.Columns>
+              <DataGridTextColumn Width="150" Header="{DynamicResource Text.Statistics.AuthorName}" Binding="{Binding Name}"/>
+              <DataGridTextColumn Width="100" Header="{DynamicResource Text.Statistics.CommitAmount}" Binding="{Binding Count}"/>
+            </DataGrid.Columns>
+          </DataGrid>
+
+          <!-- Total Authors -->
+          <StackPanel Grid.Row="1" Grid.Column="0" Orientation="Horizontal">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalAuthors}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.WeekByAuthor.Count}" Margin="4,0,0,0"/>
+          </StackPanel>
+
+          <!-- Graph -->
+          <v:Chart Grid.Row="0" Grid.Column="1"
+                   Margin="16,8,0,0"
+                   FontFamily="{StaticResource JetBrainsMono}"
+                   LineBrush="{DynamicResource Brush.FG1}"
+                   ShapeBrush="{DynamicResource Brush.Accent1}"
+                   Samples="{Binding Data.Week}"/>
+
+          <!-- Total Commits -->
+          <StackPanel Grid.Row="1" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
+            <TextBlock Text="{DynamicResource Text.Statistics.TotalCommits}" Foreground="{DynamicResource Brush.FG2}" FontWeight="Bold"/>
+            <TextBlock Text="{Binding Data.TotalWeek}" Margin="4,0,0,0"/>
+          </StackPanel>
+        </Grid>
+      </TabItem>
+    </TabControl>
+
+    <!-- Loading Mask -->
+    <Path Grid.Row="1" 
+          Classes="rotating"
+          Width="48" Height="48"
+          Data="{DynamicResource Icons.Loading}"
+          HorizontalAlignment="Center" VerticalAlignment="Center"
+          IsVisible="{Binding IsLoading}"/>
+  </Grid>
+</Window>

src/Views/Statistics.axaml.cs

@@ -0,0 +1,185 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.Media;
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+
+namespace SourceGit.Views {
+    public class Chart : Control {
+        public static readonly StyledProperty<FontFamily> FontFamilyProperty =
+            AvaloniaProperty.Register<Chart, FontFamily>(nameof(FontFamily));
+
+        public FontFamily FontFamily {
+            get => GetValue(FontFamilyProperty);
+            set => SetValue(FontFamilyProperty, 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.Sample>> SamplesProperty =
+            AvaloniaProperty.Register<Chart, List<Models.Sample>>(nameof(Samples), null);
+
+        public List<Models.Sample> Samples {
+            get => GetValue(SamplesProperty);
+            set => SetValue(SamplesProperty, value);
+        }
+
+        static Chart() {
+            AffectsRender<Chart>(SamplesProperty);
+        }
+
+        public override void Render(DrawingContext context) {
+            if (Samples == null) 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(FontFamily);
+            var pen = new Pen(LineBrush, 1);
+            var width = Bounds.Width;
+            var height = Bounds.Height;
+
+            // Draw coordinate
+            var maxLabel = new FormattedText($"{maxV}", CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeface, 12.0, LineBrush);
+            var horizonStart = maxLabel.Width + 8;
+            var labelHeight = 32;
+            context.DrawText(maxLabel, new Point(0, -maxLabel.Height * 0.5));
+            context.DrawLine(pen, new Point(horizonStart, 0), new Point(horizonStart, height - labelHeight));
+            context.DrawLine(pen, new Point(horizonStart, height - labelHeight), new Point(width, 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());
+            for (int i = 1; i < 5; i++) {
+                var vLabel = new FormattedText(
+                    $"{maxV - i * labelStepV}",
+                    CultureInfo.CurrentCulture,
+                    FlowDirection.LeftToRight,
+                    typeface,
+                    12.0,
+                    LineBrush);
+
+                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
+            var shapeWidth = Math.Min(32, stepX - 4);
+            var hitboxes = new List<Rect>();
+            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));
+            }
+
+            // Draw shapes
+            for (int i = 0; i < samples.Count; i++) {
+                var hLabel = new FormattedText(
+                    samples[i].Name,
+                    CultureInfo.CurrentCulture,
+                    FlowDirection.LeftToRight,
+                    typeface,
+                    10.0,
+                    LineBrush);
+                var rect = hitboxes[i];
+                var xLabel = rect.X - (hLabel.Width - rect.Width) * 0.5;
+                var yLabel = height - labelHeight + 4;
+
+                context.DrawRectangle(ShapeBrush, null, rect);
+
+                if (stepX < 32) {
+                    var matrix = Matrix.CreateTranslation(hLabel.Width * 0.5, -hLabel.Height * 0.5) // Center of label
+                        * Matrix.CreateRotation(Math.PI * 0.25) // Rotate
+                        * Matrix.CreateTranslation(xLabel, yLabel); // Move
+                    using (context.PushTransform(matrix)) {
+                        context.DrawText(hLabel, new Point(0, 0));
+                    }
+                } else {
+                    context.DrawText(hLabel, new Point(xLabel, yLabel));
+                }
+            }
+
+            // Draw labels on hover
+            for (int i = 0; i < samples.Count; i++) {
+                var rect = hitboxes[i];
+                if (rect.Contains(_mousePos)) {
+                    var tooltip = new FormattedText(
+                        $"{samples[i].Count}",
+                        CultureInfo.CurrentCulture,
+                        FlowDirection.LeftToRight,
+                        typeface,
+                        12.0,
+                        LineBrush);
+
+                    var tx = rect.X - (tooltip.Width - rect.Width) * 0.5;
+                    var ty = rect.Y - tooltip.Height - 4;
+                    context.DrawText(tooltip, new Point(tx, ty));
+                    break;
+                }
+            }
+        }
+
+        protected override void OnPointerMoved(PointerEventArgs e) {
+            base.OnPointerMoved(e);
+            _mousePos = e.GetPosition(this);
+            InvalidateVisual();
+        }
+
+        private Point _mousePos = new Point(0, 0);
+    }
+
+    public partial class Statistics : Window {
+        public Statistics() {
+            InitializeComponent();
+        }
+
+        private void CloseWindow(object sender, RoutedEventArgs e) {
+            Close();
+        }
+    }
+}