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Fix: prevent image blurring at 100% zoom

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Even at 100% GDI+ manages to do some smoothing.
Also minor optimization - not messing with Graphics state when not needed.
This commit is contained in:
Killy 2020-05-01 18:45:10 +03:00
commit 0fce43404d
1 changed files with 14 additions and 4 deletions
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18
Greenshot/Drawing/Surface.cs
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@ -1461,8 +1461,7 @@ namespace Greenshot.Drawing
Rectangle imageClipRectangle = ZoomClipRectangle(targetClipRectangle, _zoomFactor.Inverse(), 2); Rectangle imageClipRectangle = ZoomClipRectangle(targetClipRectangle, _zoomFactor.Inverse(), 2);
bool isZoomedIn = _zoomFactor > Fraction.Identity; if (_elements.HasIntersectingFilters(imageClipRectangle) || _zoomFactor > Fraction.Identity)
if (_elements.HasIntersectingFilters(imageClipRectangle) || isZoomedIn)
{ {
if (_buffer != null) if (_buffer != null)
{ {
@ -1491,7 +1490,11 @@ namespace Greenshot.Drawing
_elements.Draw(graphics, _buffer, RenderMode.EDIT, imageClipRectangle); _elements.Draw(graphics, _buffer, RenderMode.EDIT, imageClipRectangle);
} }
targetGraphics.ScaleTransform(_zoomFactor, _zoomFactor); targetGraphics.ScaleTransform(_zoomFactor, _zoomFactor);
if (isZoomedIn) if (_zoomFactor == Fraction.Identity)
{
targetGraphics.DrawImage(_buffer, imageClipRectangle, imageClipRectangle, GraphicsUnit.Pixel);
}
else if(_zoomFactor > Fraction.Identity)
{ {
DrawSharpImage(targetGraphics, _buffer, imageClipRectangle); DrawSharpImage(targetGraphics, _buffer, imageClipRectangle);
} }
@ -1506,7 +1509,14 @@ namespace Greenshot.Drawing
DrawBackground(targetGraphics, targetClipRectangle); DrawBackground(targetGraphics, targetClipRectangle);
targetGraphics.ScaleTransform(_zoomFactor, _zoomFactor); targetGraphics.ScaleTransform(_zoomFactor, _zoomFactor);
DrawSmoothImage(targetGraphics, Image, imageClipRectangle); if (_zoomFactor == Fraction.Identity)
{
targetGraphics.DrawImage(Image, imageClipRectangle, imageClipRectangle, GraphicsUnit.Pixel);
}
else
{
DrawSmoothImage(targetGraphics, Image, imageClipRectangle);
}
_elements.Draw(targetGraphics, null, RenderMode.EDIT, imageClipRectangle); _elements.Draw(targetGraphics, null, RenderMode.EDIT, imageClipRectangle);
targetGraphics.ResetTransform(); targetGraphics.ResetTransform();
} }