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optimize<Chart>: more reasonable interval division

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This commit is contained in:
leo 2023-11-08 11:04:31 +08:00
parent b0d5c1fd52
commit cd934349aa
1 changed files with 51 additions and 24 deletions
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75
src/Views/Controls/Chart.cs
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@ -10,7 +10,6 @@ namespace SourceGit.Views.Controls {
/// 绘制提交频率柱状图 /// 绘制提交频率柱状图
/// </summary> /// </summary>
public class Chart : FrameworkElement { public class Chart : FrameworkElement {
public static readonly int LABEL_UNIT = 32;
public static readonly double MAX_SHAPE_WIDTH = 24; public static readonly double MAX_SHAPE_WIDTH = 24;
public static readonly DependencyProperty LineBrushProperty = DependencyProperty.Register( public static readonly DependencyProperty LineBrushProperty = DependencyProperty.Register(
@ -51,7 +50,22 @@ namespace SourceGit.Views.Controls {
foreach (var s in samples) { foreach (var s in samples) {
if (maxV < s.Count) maxV = s.Count; if (maxV < s.Count) maxV = s.Count;
} }
maxV = (int)Math.Ceiling(maxV / 10.0) * 10;
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;
}
InvalidateVisual(); InvalidateVisual();
} }
@ -65,61 +79,72 @@ namespace SourceGit.Views.Controls {
base.OnRender(dc); base.OnRender(dc);
var font = new FontFamily("Consolas"); var font = new FontFamily("Consolas");
var culture = CultureInfo.CurrentCulture;
var typeface = new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal);
var ppi = VisualTreeHelper.GetDpi(this).PixelsPerDip;
var pen = new Pen(LineBrush, 1); 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)); // 坐标系绘制
var maxLabel = new FormattedText($"{maxV}", culture, FlowDirection.LeftToRight, typeface, 12.0, LineBrush, ppi);
var horizonStart = maxLabel.Width + 8;
var labelHeight = 32;
dc.DrawText(maxLabel, new Point(0, - maxLabel.Height * 0.5));
dc.DrawLine(pen, new Point(horizonStart, 0), new Point(horizonStart, ActualHeight - labelHeight));
dc.DrawLine(pen, new Point(horizonStart, ActualHeight - labelHeight), new Point(ActualWidth, ActualHeight - labelHeight));
if (samples.Count == 0) return; if (samples.Count == 0) return;
var stepV = (ActualHeight - LABEL_UNIT) / 5; // 绘制纵坐标数值参考线
var stepX = (ActualWidth - horizonStart) / samples.Count;
var stepV = (ActualHeight - labelHeight) / 5;
var labelStepV = maxV / 5; var labelStepV = maxV / 5;
var gridPen = new Pen(LineBrush, 1) { DashStyle = DashStyles.Dash }; var gridPen = new Pen(LineBrush, 1) { DashStyle = DashStyles.Dash };
for (int i = 1; i < 5; i++) { for (int i = 1; i < 5; i++) {
var vLabel = new FormattedText( var vLabel = new FormattedText(
$"{maxV - i * labelStepV}", $"{maxV - i * labelStepV}",
CultureInfo.CurrentCulture, culture,
FlowDirection.LeftToRight, FlowDirection.LeftToRight,
new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal), typeface,
12.0, 12.0,
LineBrush, LineBrush,
VisualTreeHelper.GetDpi(this).PixelsPerDip); ppi);
var dashHeight = i * stepV; var dashHeight = i * stepV;
var vy = Math.Max(0, dashHeight - vLabel.Height * 0.5); var vy = Math.Max(0, dashHeight - vLabel.Height * 0.5);
dc.PushOpacity(.1); dc.PushOpacity(.1);
dc.DrawLine(gridPen, new Point(LABEL_UNIT + 1, dashHeight), new Point(ActualWidth, dashHeight)); dc.DrawLine(gridPen, new Point(horizonStart + 1, dashHeight), new Point(ActualWidth, dashHeight));
dc.Pop(); dc.Pop();
dc.DrawText(vLabel, new Point(0, vy)); dc.DrawText(vLabel, new Point(horizonStart - vLabel.Width - 8, vy));
} }
var stepX = (ActualWidth - LABEL_UNIT) / samples.Count; // 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
if (hitboxes.Count == 0) { if (hitboxes.Count == 0) {
var shapeWidth = Math.Min(LABEL_UNIT, stepX - 4); var shapeWidth = Math.Min(32, stepX - 4);
for (int i = 0; i < samples.Count; i++) { for (int i = 0; i < samples.Count; i++) {
var h = samples[i].Count * (ActualHeight - LABEL_UNIT) / maxV; var h = samples[i].Count * (ActualHeight - labelHeight) / maxV;
var x = LABEL_UNIT + 1 + stepX * i + (stepX - shapeWidth) * 0.5; var x = horizonStart + 1 + stepX * i + (stepX - shapeWidth) * 0.5;
var y = ActualHeight - LABEL_UNIT - h; var y = ActualHeight - labelHeight - h;
hitboxes.Add(new Rect(x, y, shapeWidth, h)); hitboxes.Add(new Rect(x, y, shapeWidth, h));
} }
} }
var mouse = Mouse.GetPosition(this); // 绘制样本
for (int i = 0; i < samples.Count; i++) { for (int i = 0; i < samples.Count; i++) {
var hLabel = new FormattedText( var hLabel = new FormattedText(
samples[i].Name, samples[i].Name,
CultureInfo.CurrentCulture, culture,
FlowDirection.LeftToRight, FlowDirection.LeftToRight,
new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal), typeface,
10.0, 10.0,
LineBrush, LineBrush,
VisualTreeHelper.GetDpi(this).PixelsPerDip); ppi);
var rect = hitboxes[i]; var rect = hitboxes[i];
var xLabel = rect.X - (hLabel.Width - rect.Width) * 0.5; var xLabel = rect.X - (hLabel.Width - rect.Width) * 0.5;
var yLabel = ActualHeight - LABEL_UNIT + 4; var yLabel = ActualHeight - labelHeight + 4;
dc.DrawRectangle(ChartBrush, null, rect); dc.DrawRectangle(ChartBrush, null, rect);
if (stepX < LABEL_UNIT) { if (stepX < 32) {
dc.PushTransform(new TranslateTransform(xLabel, yLabel)); dc.PushTransform(new TranslateTransform(xLabel, yLabel));
dc.PushTransform(new RotateTransform(45, hLabel.Width * 0.5, hLabel.Height * 0.5)); dc.PushTransform(new RotateTransform(45, hLabel.Width * 0.5, hLabel.Height * 0.5));
dc.DrawText(hLabel, new Point(0, 0)); dc.DrawText(hLabel, new Point(0, 0));
@ -130,17 +155,19 @@ namespace SourceGit.Views.Controls {
} }
} }
// 当鼠标移动上去时显示数值
var mouse = Mouse.GetPosition(this);
for (int i = 0; i < samples.Count; i++) { for (int i = 0; i < samples.Count; i++) {
var rect = hitboxes[i]; var rect = hitboxes[i];
if (rect.Contains(mouse)) { if (rect.Contains(mouse)) {
var tooltip = new FormattedText( var tooltip = new FormattedText(
$"{samples[i].Count}", $"{samples[i].Count}",
CultureInfo.CurrentCulture, culture,
FlowDirection.LeftToRight, FlowDirection.LeftToRight,
new Typeface(font, FontStyles.Normal, FontWeights.Normal, FontStretches.Normal), typeface,
12.0, 12.0,
FindResource("Brush.FG1") as Brush, FindResource("Brush.FG1") as Brush,
VisualTreeHelper.GetDpi(this).PixelsPerDip); ppi);
var tx = rect.X - (tooltip.Width - rect.Width) * 0.5; var tx = rect.X - (tooltip.Width - rect.Width) * 0.5;
var ty = rect.Y - tooltip.Height - 4; var ty = rect.Y - tooltip.Height - 4;