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Robust clip region resize

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This commit is contained in:
Killy 2020-04-28 19:19:17 +03:00
commit 4c0277be90
1 changed files with 15 additions and 15 deletions
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30
Greenshot/Drawing/Surface.cs
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@ -1406,24 +1406,24 @@ namespace Greenshot.Drawing
return GetImage(RenderMode.EXPORT);
}
private static Rectangle ZoomClipRectangle(Rectangle rc, double scale)
=> new Rectangle(
private static Rectangle ZoomClipRectangle(Rectangle rc, double scale, int inflateAmount = 0)
{
rc = new Rectangle(
(int)(rc.X * scale),
(int)(rc.Y * scale),
(int)((rc.Width + 1) * scale) + 1, // making sure to redraw enough pixels when moving scaled image
(int)((rc.Height + 1) * scale) + 1
);
private static RectangleF ZoomClipRectangle(RectangleF rc, double scale)
=> new RectangleF(
(float)Math.Floor(rc.X * scale),
(float)Math.Floor(rc.Y * scale),
(float)Math.Ceiling(rc.Width * scale),
(float)Math.Ceiling(rc.Height * scale)
(int)(rc.Width * scale) + 1,
(int)(rc.Height * scale) + 1
);
if (scale > 1)
{
inflateAmount = (int)(inflateAmount * scale);
}
rc.Inflate(inflateAmount, inflateAmount);
return rc;
}
public void InvalidateElements(Rectangle rc)
=> Invalidate(ZoomClipRectangle(rc, _zoomFactor));
=> Invalidate(ZoomClipRectangle(rc, _zoomFactor, 1));
/// <summary>
/// This is the event handler for the Paint Event, try to draw as little as possible!
@ -1439,7 +1439,7 @@ namespace Greenshot.Drawing
LOG.Debug("Empty cliprectangle??");
return;
}
Rectangle imageClipRectangle = ZoomClipRectangle(targetClipRectangle, 1.0 / _zoomFactor);
Rectangle imageClipRectangle = ZoomClipRectangle(targetClipRectangle, 1.0 / _zoomFactor, 2);
bool isZoomedIn = ZoomFactor > 1f;
if (_elements.HasIntersectingFilters(imageClipRectangle) || isZoomedIn)
@ -1467,7 +1467,7 @@ namespace Greenshot.Drawing
//graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
DrawBackground(graphics, imageClipRectangle);
graphics.DrawImage(Image, imageClipRectangle, imageClipRectangle, GraphicsUnit.Pixel);
graphics.SetClip(ZoomClipRectangle(targetGraphics.ClipBounds, 1.0 / _zoomFactor));
graphics.SetClip(ZoomClipRectangle(Rectangle.Round(targetGraphics.ClipBounds), 1.0 / _zoomFactor, 2));
_elements.Draw(graphics, _buffer, RenderMode.EDIT, imageClipRectangle);
}
targetGraphics.ScaleTransform(_zoomFactor, _zoomFactor);