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fix: offset of commit graph does not look quite right (#1287)

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This is because that when using `VirtualizingStackPanel`, the `Bounds.Height` of `ListBoxItem` may not be the same with its `Height` setted in axaml.

Signed-off-by: leo <longshuang@msn.cn>
This commit is contained in:
leo 2025-05-08 12:22:23 +08:00
parent 6df38ad970
commit 832fcd7487
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3 changed files with 52 additions and 30 deletions
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4
src/Models/CommitGraph.cs
View file

@ -64,8 +64,8 @@ namespace SourceGit.Models
{
const double unitWidth = 12;
const double halfWidth = 6;
const double unitHeight = 28;
const double halfHeight = 14;
const double unitHeight = 1;
const double halfHeight = 0.5;
var temp = new CommitGraph();
var unsolved = new List<PathHelper>();

76
src/Views/CommitGraph.cs
View file

@ -56,22 +56,33 @@ namespace SourceGit.Views
return;
// Calculate drawing area.
double width = Bounds.Width - 273 - histories.AuthorNameColumnWidth.Value;
double height = Bounds.Height;
double startY = list.Scroll?.Offset.Y ?? 0;
double endY = startY + height + 28;
var width = Bounds.Width - 273 - histories.AuthorNameColumnWidth.Value;
var height = Bounds.Height;
// Calculate row height
var container = list.ItemsPanelRoot as VirtualizingStackPanel;
if (container == null)
return;
var item = list.ContainerFromIndex(container.FirstRealizedIndex);
if (item == null)
return;
var rowHeight = item.Bounds.Height;
var startY = container.FirstRealizedIndex * rowHeight - item.TranslatePoint(new Point(0, 0), list).Value!.Y;
var endY = startY + height + 28;
// Apply scroll offset and clip.
using (context.PushClip(new Rect(0, 0, width, height)))
using (context.PushTransform(Matrix.CreateTranslation(0, -startY)))
{
// Draw contents
DrawCurves(context, graph, startY, endY);
DrawAnchors(context, graph, startY, endY);
DrawCurves(context, graph, startY, endY, rowHeight);
DrawAnchors(context, graph, startY, endY, rowHeight);
}
}
private void DrawCurves(DrawingContext context, Models.CommitGraph graph, double top, double bottom)
private void DrawCurves(DrawingContext context, Models.CommitGraph graph, double top, double bottom, double rowHeight)
{
var grayedPen = new Pen(new SolidColorBrush(Colors.Gray, 0.4), Models.CommitGraph.Pens[0].Thickness);
var onlyHighlightCurrentBranch = OnlyHighlightCurrentBranch;
@ -82,16 +93,20 @@ namespace SourceGit.Views
{
if (link.IsMerged)
continue;
if (link.End.Y < top)
var startY = link.Start.Y * rowHeight;
var endY = link.End.Y * rowHeight;
if (endY < top)
continue;
if (link.Start.Y > bottom)
if (startY > bottom)
break;
var geo = new StreamGeometry();
using (var ctx = geo.Open())
{
ctx.BeginFigure(link.Start, false);
ctx.QuadraticBezierTo(link.Control, link.End);
ctx.BeginFigure(new Point(link.Start.X, startY), false);
ctx.QuadraticBezierTo(new Point(link.Control.X, link.Control.Y * rowHeight), new Point(link.End.X, endY));
}
context.DrawGeometry(null, grayedPen, geo);
@ -100,10 +115,11 @@ namespace SourceGit.Views
foreach (var line in graph.Paths)
{
var last = line.Points[0];
var last = new Point(line.Points[0].X, line.Points[0].Y * rowHeight);
var size = line.Points.Count;
var endY = line.Points[size - 1].Y * rowHeight;
if (line.Points[size - 1].Y < top)
if (endY < top)
continue;
if (last.Y > bottom)
break;
@ -117,7 +133,7 @@ namespace SourceGit.Views
var ended = false;
for (int i = 1; i < size; i++)
{
var cur = line.Points[i];
var cur = new Point(line.Points[i].X, line.Points[i].Y * rowHeight);
if (cur.Y < top)
{
last = cur;
@ -173,23 +189,27 @@ namespace SourceGit.Views
{
if (onlyHighlightCurrentBranch && !link.IsMerged)
continue;
if (link.End.Y < top)
var startY = link.Start.Y * rowHeight;
var endY = link.End.Y * rowHeight;
if (endY < top)
continue;
if (link.Start.Y > bottom)
if (startY > bottom)
break;
var geo = new StreamGeometry();
using (var ctx = geo.Open())
{
ctx.BeginFigure(link.Start, false);
ctx.QuadraticBezierTo(link.Control, link.End);
ctx.BeginFigure(new Point(link.Start.X, startY), false);
ctx.QuadraticBezierTo(new Point(link.Control.X, link.Control.Y * rowHeight), new Point(link.End.X, endY));
}
context.DrawGeometry(null, Models.CommitGraph.Pens[link.Color], geo);
}
}
private void DrawAnchors(DrawingContext context, Models.CommitGraph graph, double top, double bottom)
private void DrawAnchors(DrawingContext context, Models.CommitGraph graph, double top, double bottom, double rowHeight)
{
var dotFill = DotBrush;
var dotFillPen = new Pen(dotFill, 2);
@ -198,9 +218,11 @@ namespace SourceGit.Views
foreach (var dot in graph.Dots)
{
if (dot.Center.Y < top)
var center = new Point(dot.Center.X, dot.Center.Y * rowHeight);
if (center.Y < top)
continue;
if (dot.Center.Y > bottom)
if (center.Y > bottom)
break;
var pen = Models.CommitGraph.Pens[dot.Color];
@ -210,16 +232,16 @@ namespace SourceGit.Views
switch (dot.Type)
{
case Models.CommitGraph.DotType.Head:
context.DrawEllipse(dotFill, pen, dot.Center, 6, 6);
context.DrawEllipse(pen.Brush, null, dot.Center, 3, 3);
context.DrawEllipse(dotFill, pen, center, 6, 6);
context.DrawEllipse(pen.Brush, null, center, 3, 3);
break;
case Models.CommitGraph.DotType.Merge:
context.DrawEllipse(pen.Brush, null, dot.Center, 6, 6);
context.DrawLine(dotFillPen, new Point(dot.Center.X, dot.Center.Y - 3), new Point(dot.Center.X, dot.Center.Y + 3));
context.DrawLine(dotFillPen, new Point(dot.Center.X - 3, dot.Center.Y), new Point(dot.Center.X + 3, dot.Center.Y));
context.DrawEllipse(pen.Brush, null, center, 6, 6);
context.DrawLine(dotFillPen, new Point(center.X, center.Y - 3), new Point(center.X, center.Y + 3));
context.DrawLine(dotFillPen, new Point(center.X - 3, center.Y), new Point(center.X + 3, center.Y));
break;
default:
context.DrawEllipse(dotFill, pen, dot.Center, 3, 3);
context.DrawEllipse(dotFill, pen, center, 3, 3);
break;
}
}

2
src/Views/Histories.axaml
View file

@ -76,7 +76,7 @@
<Style Selector="ListBoxItem">
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Height" Value="28"/>
<Setter Property="Height" Value="26"/>
<Setter Property="Template">
<ControlTemplate>
<Grid>