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refactor: do not change original image aspect ratio and do not upscale image in SWIPE mode

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Signed-off-by: leo <longshuang@msn.cn>
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leo 2025-06-11 10:12:03 +08:00
parent bcefb773c1
commit 7c1a894525
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1 changed files with 24 additions and 14 deletions
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38
src/Views/ImageContainer.cs
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@ -137,21 +137,12 @@ namespace SourceGit.Views
var w = Bounds.Width;
var h = Bounds.Height;
var x = w * alpha;
var left = OldImage;
if (left != null && alpha > 0)
{
var src = new Rect(0, 0, left.Size.Width * alpha, left.Size.Height);
var dst = new Rect(0, 0, x, h);
context.DrawImage(left, src, dst);
}
var right = NewImage;
if (right != null && alpha < 1)
{
var src = new Rect(right.Size.Width * alpha, 0, right.Size.Width * (1 - alpha), right.Size.Height);
var dst = new Rect(x, 0, w - x, h);
context.DrawImage(right, src, dst);
}
if (OldImage is { } left && alpha > 0)
RenderSingleSide(context, left, new Rect(0, 0, x, h));
if (NewImage is { } right && alpha < 1)
RenderSingleSide(context, right, new Rect(x, 0, w - x, h));
context.DrawLine(new Pen(Brushes.DarkGreen, 2), new Point(x, 0), new Point(x, Bounds.Height));
}
@ -233,6 +224,25 @@ namespace SourceGit.Views
return new Size(scale * img.Width, scale * img.Height);
}
private void RenderSingleSide(DrawingContext context, Bitmap img, Rect clip)
{
var w = Bounds.Width;
var h = Bounds.Height;
var imgW = img.Size.Width;
var imgH = img.Size.Height;
var scale = Math.Min(1, Math.Min(w / imgW, h / imgH));
var scaledW = img.Size.Width * scale;
var scaledH = img.Size.Height * scale;
var src = new Rect(0, 0, imgW, imgH);
var dst = new Rect((w - scaledW) * 0.5, (h - scaledH) * 0.5, scaledW, scaledH);
using (context.PushClip(clip))
context.DrawImage(img, src, dst);
}
private bool _pressedOnSlider = false;
private bool _lastInSlider = false;
}