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optimize<Chart>: more reasonable interval division
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b0d5c1fd52
commit
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1 changed files with 51 additions and 24 deletions
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@ -10,7 +10,6 @@ namespace SourceGit.Views.Controls {
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/// 绘制提交频率柱状图
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/// </summary>
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public class Chart : FrameworkElement {
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public static readonly int LABEL_UNIT = 32;
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public static readonly double MAX_SHAPE_WIDTH = 24;
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public static readonly DependencyProperty LineBrushProperty = DependencyProperty.Register(
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@ -51,7 +50,22 @@ namespace SourceGit.Views.Controls {
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foreach (var s in samples) {
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if (maxV < s.Count) maxV = s.Count;
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}
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maxV = (int)Math.Ceiling(maxV / 10.0) * 10;
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if (maxV <= 5) {
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maxV = 5;
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} else if (maxV <= 10) {
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maxV = 10;
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} else if (maxV <= 50) {
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maxV = 50;
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} else if (maxV <= 100) {
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maxV = 100;
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} else if (maxV <= 200) {
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maxV = 200;
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} else if (maxV <= 500) {
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maxV = 500;
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} else {
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maxV = (int)Math.Ceiling(maxV / 500.0) * 500;
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}
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InvalidateVisual();
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}
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@ -65,61 +79,72 @@ namespace SourceGit.Views.Controls {
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base.OnRender(dc);
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var font = new FontFamily("Consolas");
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var culture = CultureInfo.CurrentCulture;
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var typeface = new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
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var ppi = VisualTreeHelper.GetDpi(this).PixelsPerDip;
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var pen = new Pen(LineBrush, 1);
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dc.DrawLine(pen, new Point(LABEL_UNIT, 0), new Point(LABEL_UNIT, ActualHeight - LABEL_UNIT));
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dc.DrawLine(pen, new Point(LABEL_UNIT, ActualHeight - LABEL_UNIT), new Point(ActualWidth, ActualHeight - LABEL_UNIT));
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// 坐标系绘制
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var maxLabel = new FormattedText($"{maxV}", culture, FlowDirection.LeftToRight, typeface, 12.0, LineBrush, ppi);
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var horizonStart = maxLabel.Width + 8;
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var labelHeight = 32;
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dc.DrawText(maxLabel, new Point(0, - maxLabel.Height * 0.5));
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dc.DrawLine(pen, new Point(horizonStart, 0), new Point(horizonStart, ActualHeight - labelHeight));
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dc.DrawLine(pen, new Point(horizonStart, ActualHeight - labelHeight), new Point(ActualWidth, ActualHeight - labelHeight));
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if (samples.Count == 0) return;
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var stepV = (ActualHeight - LABEL_UNIT) / 5;
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// 绘制纵坐标数值参考线
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var stepX = (ActualWidth - horizonStart) / samples.Count;
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var stepV = (ActualHeight - labelHeight) / 5;
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var labelStepV = maxV / 5;
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var gridPen = new Pen(LineBrush, 1) { DashStyle = DashStyles.Dash };
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for (int i = 1; i < 5; i++) {
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var vLabel = new FormattedText(
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$"{maxV - i * labelStepV}",
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CultureInfo.CurrentCulture,
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culture,
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FlowDirection.LeftToRight,
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new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
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typeface,
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12.0,
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LineBrush,
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VisualTreeHelper.GetDpi(this).PixelsPerDip);
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ppi);
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var dashHeight = i * stepV;
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var vy = Math.Max(0, dashHeight - vLabel.Height * 0.5);
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dc.PushOpacity(.1);
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dc.DrawLine(gridPen, new Point(LABEL_UNIT + 1, dashHeight), new Point(ActualWidth, dashHeight));
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dc.DrawLine(gridPen, new Point(horizonStart + 1, dashHeight), new Point(ActualWidth, dashHeight));
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dc.Pop();
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dc.DrawText(vLabel, new Point(0, vy));
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dc.DrawText(vLabel, new Point(horizonStart - vLabel.Width - 8, vy));
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}
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var stepX = (ActualWidth - LABEL_UNIT) / samples.Count;
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// 先计算一下当前每个样本的碰撞区域,用于当鼠标移动上去时显示数值
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if (hitboxes.Count == 0) {
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var shapeWidth = Math.Min(LABEL_UNIT, stepX - 4);
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var shapeWidth = Math.Min(32, stepX - 4);
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for (int i = 0; i < samples.Count; i++) {
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var h = samples[i].Count * (ActualHeight - LABEL_UNIT) / maxV;
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var x = LABEL_UNIT + 1 + stepX * i + (stepX - shapeWidth) * 0.5;
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var y = ActualHeight - LABEL_UNIT - h;
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var h = samples[i].Count * (ActualHeight - labelHeight) / maxV;
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var x = horizonStart + 1 + stepX * i + (stepX - shapeWidth) * 0.5;
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var y = ActualHeight - labelHeight - h;
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hitboxes.Add(new Rect(x, y, shapeWidth, h));
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}
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}
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var mouse = Mouse.GetPosition(this);
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// 绘制样本
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for (int i = 0; i < samples.Count; i++) {
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var hLabel = new FormattedText(
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samples[i].Name,
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CultureInfo.CurrentCulture,
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culture,
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FlowDirection.LeftToRight,
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new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
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typeface,
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10.0,
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LineBrush,
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VisualTreeHelper.GetDpi(this).PixelsPerDip);
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ppi);
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var rect = hitboxes[i];
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var xLabel = rect.X - (hLabel.Width - rect.Width) * 0.5;
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var yLabel = ActualHeight - LABEL_UNIT + 4;
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var yLabel = ActualHeight - labelHeight + 4;
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dc.DrawRectangle(ChartBrush, null, rect);
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if (stepX < LABEL_UNIT) {
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if (stepX < 32) {
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dc.PushTransform(new TranslateTransform(xLabel, yLabel));
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dc.PushTransform(new RotateTransform(45, hLabel.Width * 0.5, hLabel.Height * 0.5));
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dc.DrawText(hLabel, new Point(0, 0));
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@ -130,17 +155,19 @@ namespace SourceGit.Views.Controls {
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}
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}
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// 当鼠标移动上去时显示数值
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var mouse = Mouse.GetPosition(this);
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for (int i = 0; i < samples.Count; i++) {
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var rect = hitboxes[i];
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if (rect.Contains(mouse)) {
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var tooltip = new FormattedText(
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$"{samples[i].Count}",
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CultureInfo.CurrentCulture,
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culture,
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FlowDirection.LeftToRight,
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new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal),
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typeface,
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12.0,
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FindResource("Brush.FG1") as Brush,
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VisualTreeHelper.GetDpi(this).PixelsPerDip);
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ppi);
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var tx = rect.X - (tooltip.Width - rect.Width) * 0.5;
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var ty = rect.Y - tooltip.Height - 4;
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