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Reduce the updated region on OS X (related to #1170)

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This commit is contained in:
David Capello 2016-07-12 17:23:28 -03:00
parent 5640277ff7
commit 5dfda3b0f0
1 changed files with 20 additions and 9 deletions
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29
src/she/skia/skia_window_osx.mm
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@ -270,22 +270,34 @@ private:
if (!m_display->isInitialized())
return;
if (rect.isEmpty())
return;
NSRect viewBounds = m_window.contentView.bounds;
int scale = this->scale();
SkiaSurface* surface = static_cast<SkiaSurface*>(m_display->getSurface());
const SkBitmap& bitmap = surface->bitmap();
const SkBitmap& origBitmap = surface->bitmap();
// Create a subset to draw on the view
SkBitmap bitmap;
if (!origBitmap.extractSubset(
&bitmap, SkIRect::MakeXYWH(rect.x/scale,
(viewBounds.size.height-(rect.y+rect.h))/scale,
rect.w/scale,
rect.h/scale)))
return;
ASSERT(bitmap.width() * bitmap.bytesPerPixel() == bitmap.rowBytes());
bitmap.lockPixels();
{
NSRect viewBounds = [[m_window contentView] bounds];
NSGraphicsContext* gc = [NSGraphicsContext currentContext];
CGContextRef cg = (CGContextRef)[gc graphicsPort];
CGImageRef img = SkCreateCGImageRef(bitmap);
if (img) {
CGRect r = CGRectMake(viewBounds.origin.x,
viewBounds.origin.y,
viewBounds.size.width,
viewBounds.size.height);
CGRect r = CGRectMake(viewBounds.origin.x+rect.x,
viewBounds.origin.y+rect.y,
rect.w, rect.h);
CGContextSaveGState(cg);
CGContextSetInterpolationQuality(cg, kCGInterpolationNone);
CGContextDrawImage(cg, r, img);
@ -293,7 +305,6 @@ private:
CGImageRelease(img);
}
}
bitmap.unlockPixels();
}