feature<Statistics>: add simple statistic page

2025-06-01 17:24:59 +00:00 · 2022-01-11 20:18:35 +08:00 · 2022-01-11 20:18:35 +08:00 · c52ed4a711
commit c52ed4a711
parent f04c01b878
10 changed files with 512 additions and 0 deletions
--- a/src/Views/Controls/Chart.cs
+++ b/src/Views/Controls/Chart.cs
@ -0,0 +1,118 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Media;
+
+namespace SourceGit.Views.Controls {
+    /// <summary>
+    ///     绘制提交频率柱状图
+    /// </summary>
+    public class Chart : FrameworkElement {
+        public static readonly int LABEL_UNIT = 32;
+        public static readonly double MAX_SHAPE_WIDTH = 24;
+
+        public static readonly DependencyProperty LineBrushProperty = DependencyProperty.Register(
+            "LineBrush", 
+            typeof(Brush), 
+            typeof(Chart), 
+            new PropertyMetadata(Brushes.White));
+
+        public Brush LineBrush {
+            get { return (Brush)GetValue(LineBrushProperty); }
+            set { SetValue(LineBrushProperty, value); }
+        }
+
+        public static readonly DependencyProperty ChartBrushProperty = DependencyProperty.Register(
+            "ChartBrush",
+            typeof(Brush),
+            typeof(Chart),
+            new PropertyMetadata(Brushes.White));
+
+        public Brush ChartBrush {
+            get { return (Brush)GetValue(ChartBrushProperty); }
+            set { SetValue(ChartBrushProperty, value); }
+        }
+
+        private int maxV = 0;
+        private List<Models.StatisticSample> samples = new List<Models.StatisticSample>();
+
+        /// <summary>
+        ///     设置绘制数据
+        /// </summary>
+        /// <param name="samples">数据源</param>
+        public void SetData(List<Models.StatisticSample> samples) {
+            this.samples = samples;
+            maxV = 0;
+
+            foreach (var s in samples) {
+                if (maxV < s.Count) maxV = s.Count;
+            }
+
+            maxV = (int)Math.Ceiling(maxV / 10.0) * 10;
+            InvalidateVisual();
+        }
+
+        protected override void OnRender(DrawingContext dc) {
+            base.OnRender(dc);
+
+            var font = new FontFamily("Consolas");
+            var pen = new Pen(LineBrush, 1);
+            dc.DrawLine(pen, new Point(LABEL_UNIT, 0), new Point(LABEL_UNIT, ActualHeight - LABEL_UNIT));
+            dc.DrawLine(pen, new Point(LABEL_UNIT, ActualHeight - LABEL_UNIT), new Point(ActualWidth, ActualHeight - LABEL_UNIT));
+
+            if (samples.Count == 0) return;
+
+            var stepV = (ActualHeight - LABEL_UNIT) / 5;
+            var labelStepV = maxV / 5;
+            var gridPen = new Pen(LineBrush, 1) { DashStyle = DashStyles.Dash };
+            for (int i = 1; i < 5; i++) {
+                var vLabel = new FormattedText(
+                    $"{maxV - i * labelStepV}",
+                    CultureInfo.CurrentCulture,
+                    FlowDirection.LeftToRight,
+                    new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
+                    12.0,
+                    LineBrush,
+                    VisualTreeHelper.GetDpi(this).PixelsPerDip);
+
+                var dashHeight = i * stepV;
+                var vy = Math.Max(0, dashHeight - vLabel.Height * 0.5);
+                dc.DrawLine(gridPen, new Point(LABEL_UNIT + 1, dashHeight), new Point(ActualWidth, dashHeight));
+                dc.DrawText(vLabel, new Point(0, vy));
+            }
+
+            var stepX = (ActualWidth - LABEL_UNIT) / samples.Count;
+            var shapeWidth = Math.Min(LABEL_UNIT, stepX - 4);
+            for (int i = 0; i < samples.Count; i++) {
+                var h = samples[i].Count * (ActualHeight - LABEL_UNIT) / maxV;
+                var x = LABEL_UNIT + 1 + stepX * i + (stepX - shapeWidth) * 0.5;
+                var y = ActualHeight - LABEL_UNIT - h;
+                var rect = new Rect(x, y, shapeWidth, h);
+
+                var hLabel = new FormattedText(
+                    samples[i].Name,
+                    CultureInfo.CurrentCulture,
+                    FlowDirection.LeftToRight,
+                    new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
+                    10.0,
+                    LineBrush,
+                    VisualTreeHelper.GetDpi(this).PixelsPerDip);
+                var xLabel = x - (hLabel.Width - shapeWidth) * 0.5;
+                var yLabel = ActualHeight - LABEL_UNIT + 4;
+
+                dc.DrawRectangle(ChartBrush, null, rect);
+
+                if (stepX < LABEL_UNIT) {
+                    dc.PushTransform(new TranslateTransform(xLabel, yLabel));
+                    dc.PushTransform(new RotateTransform(45, hLabel.Width * 0.5, hLabel.Height * 0.5));
+                    dc.DrawText(hLabel, new Point(0, 0));
+                    dc.Pop();
+                    dc.Pop();
+                } else {
+                    dc.DrawText(hLabel, new Point(xLabel, yLabel));
+                }                
+            }
+        }
+    }
+}