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refactor: custom renderer for launcher tab bar

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leo 2024-06-29 17:04:39 +08:00
parent bfea573d4b
commit 1241539260
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6 changed files with 112 additions and 47 deletions
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100
src/Views/LauncherTabBar.axaml.cs
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@ -4,6 +4,7 @@ using Avalonia;
using Avalonia.Controls;
using Avalonia.Input;
using Avalonia.Interactivity;
using Avalonia.Media;
namespace SourceGit.Views
{
@ -14,6 +15,98 @@ namespace SourceGit.Views
InitializeComponent();
}
public override void Render(DrawingContext context)
{
base.Render(context);
if (LauncherTabsList == null || LauncherTabsList.SelectedIndex == -1)
return;
var startX = LauncherTabsScroller.Offset.X;
var endX = startX + LauncherTabsScroller.Viewport.Width;
var height = LauncherTabsScroller.Viewport.Height;
var selectedIdx = LauncherTabsList.SelectedIndex;
var count = LauncherTabsList.ItemCount;
var separatorPen = new Pen(this.FindResource("Brush.FG2") as IBrush, 0.5);
var separatorY = (height - 20) * 0.5;
for (var i = 0; i < count; i++)
{
if (i == selectedIdx || i == selectedIdx - 1)
continue;
var container = LauncherTabsList.ContainerFromIndex(i);
var containerEndX = container.Bounds.Right;
if (containerEndX < startX || containerEndX > endX)
continue;
var separatorX = containerEndX - startX + LauncherTabsScroller.Bounds.X;
context.DrawLine(separatorPen, new Point(separatorX, separatorY), new Point(separatorX, separatorY + 20));
}
var selected = LauncherTabsList.ContainerFromIndex(selectedIdx);
var activeStartX = selected.Bounds.X;
var activeEndX = activeStartX + selected.Bounds.Width;
if (activeStartX > endX + 6 || activeEndX < startX - 6)
return;
var geo = new StreamGeometry();
var angle = Math.PI / 2;
var x = 0.0;
var y = height + 0.5;
using (var ctx = geo.Open())
{
var drawLeftX = activeStartX - startX + LauncherTabsScroller.Bounds.X;
var drawRightX = activeEndX - startX + LauncherTabsScroller.Bounds.X;
if (drawLeftX < LauncherTabsScroller.Bounds.X)
{
x = LauncherTabsScroller.Bounds.X;
ctx.BeginFigure(new Point(x, y), true);
y = 0;
ctx.LineTo(new Point(x, y));
x = drawRightX - 6;
}
else
{
x = drawLeftX - 6;
ctx.BeginFigure(new Point(x, y), true);
x = drawLeftX;
y -= 6;
ctx.ArcTo(new Point(x, y), new Size(6.5, 6.5), angle, false, SweepDirection.CounterClockwise);
y = 6;
ctx.LineTo(new Point(x, y));
x += 6;
y = 0;
ctx.ArcTo(new Point(x, y), new Size(6, 6), angle, false, SweepDirection.Clockwise);
x = drawRightX - 6;
}
if (drawRightX < LauncherTabsScroller.Bounds.Right)
{
ctx.LineTo(new Point(x, y));
x = drawRightX;
y = 6;
ctx.ArcTo(new Point(x, y), new Size(6, 6), angle, false, SweepDirection.Clockwise);
y = height - 6;
ctx.LineTo(new Point(x, y));
x += 6;
y = height + 0.5;
ctx.ArcTo(new Point(x, y), new Size(6.5, 6.5), angle, false, SweepDirection.CounterClockwise);
}
else
{
x = LauncherTabsScroller.Bounds.Right;
ctx.LineTo(new Point(x, y));
y = height + 0.5;
ctx.LineTo(new Point(x, y));
}
}
var fill = this.FindResource("Brush.ToolBar") as IBrush;
var stroke = new Pen(this.FindResource("Brush.Border0") as IBrush, 1);
context.DrawGeometry(fill, stroke, geo);
}
private void ScrollTabs(object sender, PointerWheelEventArgs e)
{
if (!e.KeyModifiers.HasFlag(KeyModifiers.Shift))
@ -52,6 +145,13 @@ namespace SourceGit.Views
LeftScrollIndicator.IsVisible = false;
RightScrollIndicator.IsVisible = false;
}
InvalidateVisual();
}
private void OnTabsSelectionChanged(object sender, SelectionChangedEventArgs e)
{
InvalidateVisual();
}
private void SetupDragAndDrop(object sender, RoutedEventArgs e)