//-----------------------------------------------------------------------------
void CGDrawContext::drawBitmap (CBitmap* bitmap, const CRect& inRect, const CPoint& inOffset, float alpha)
{
if (bitmap == 0 || alpha == 0.f)
return;
CGBitmap* cgBitmap = bitmap->getPlatformBitmap () ? dynamic_cast<CGBitmap*> (bitmap->getPlatformBitmap ()) : 0;
CGImageRef image = cgBitmap ? cgBitmap->getCGImage () : 0;
if (image)
{
CGContextRef context = beginCGContext (false, true);
if (context)
{
CRect rect (inRect);
rect.makeIntegral ();
CPoint offset (inOffset);
offset.makeIntegral ();
CGContextSetAlpha (context, (CGFloat)alpha*currentState.globalAlpha);
CGRect dest;
dest.origin.x = rect.left - offset.h;
dest.origin.y = -(rect.top) - (bitmap->getHeight () - offset.v);
dest.size.width = cgBitmap->getSize ().x;
dest.size.height = cgBitmap->getSize ().y;
CGRect clipRect2;
clipRect2.origin.x = rect.left;
clipRect2.origin.y = -(rect.top) - rect.height ();
clipRect2.size.width = rect.width ();
clipRect2.size.height = rect.height ();
CGContextClipToRect (context, clipRect2);
CGLayerRef layer = cgBitmap->getCGLayer ();
if (layer == 0)
{
BitmapDrawCountMap::iterator it = bitmapDrawCount.find (cgBitmap);
if (it == bitmapDrawCount.end ())
{
bitmapDrawCount.insert (std::pair<CGBitmap*, int32_t> (cgBitmap, 1));
CGContextDrawImage (context, dest, image);
}
else
{
it->second++;
layer = cgBitmap->createCGLayer (context);
}
}
if (layer)
{
CGContextDrawLayerInRect (context, dest, layer);
}
releaseCGContext (context);
}
}
}
//-----------------------------------------------------------------------------
void CGDrawContext::drawCGImageRef (CGContextRef context, CGImageRef image, CGLayerRef layer, double bitmapScaleFactor, const CRect& inRect, const CPoint& inOffset, float alpha, CBitmap* bitmap)
{
CRect rect (inRect);
CPoint offset (inOffset);
CGContextSetAlpha (context, (CGFloat)alpha*currentState.globalAlpha);
CGRect dest;
dest.origin.x = static_cast<CGFloat> (rect.left - offset.x);
dest.origin.y = static_cast<CGFloat> (-(rect.top) - (bitmap->getHeight () - offset.y));
dest.size.width = static_cast<CGFloat> (bitmap->getWidth ());
dest.size.height = static_cast<CGFloat> (bitmap->getHeight ());
CGRect clipRect;
clipRect.origin.x = static_cast<CGFloat> (rect.left);
clipRect.origin.y = static_cast<CGFloat> (-(rect.top) - rect.getHeight ());
clipRect.size.width = static_cast<CGFloat> (rect.getWidth ());
clipRect.size.height = static_cast<CGFloat> (rect.getHeight ());
if (bitmapScaleFactor != 1.)
{
CGContextConcatCTM (context, CGAffineTransformMakeScale (static_cast<CGFloat> (1./bitmapScaleFactor), static_cast<CGFloat> (1./bitmapScaleFactor)));
CGAffineTransform transform = CGAffineTransformMakeScale (static_cast<CGFloat> (bitmapScaleFactor), static_cast<CGFloat> (bitmapScaleFactor));
clipRect.origin = CGPointApplyAffineTransform (clipRect.origin, transform);
clipRect.size = CGSizeApplyAffineTransform (clipRect.size, transform);
dest.origin = CGPointApplyAffineTransform (dest.origin, transform);
dest.size = CGSizeApplyAffineTransform (dest.size, transform);
}
dest = pixelAlligned (dest);
clipRect = pixelAlligned (clipRect);
CGContextClipToRect (context, clipRect);
if (layer)
{
CGContextDrawLayerInRect (context, dest, layer);
}
else
{
CGContextDrawImage (context, dest, image);
}
}
void CGContextDrawLayerInRect_wrap( CGContext *con, CGLayer* lay, float x, float y, float width, float height ) {
CGContextDrawLayerInRect( con, CGRectMake(x, y, width, height), lay);
}
