//-----------------------------------------------------------------------------
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::drawBitmap (CBitmap* bitmap, const CRect& inRect, const CPoint& inOffset, float alpha)
{
if (bitmap == 0 || alpha == 0.f)
return;
double transformedScaleFactor = scaleFactor;
CGraphicsTransform t = getCurrentTransform ();
if (t.m11 == t.m22 && t.m12 == 0 && t.m21 == 0)
transformedScaleFactor *= t.m11;
IPlatformBitmap* platformBitmap = bitmap->getBestPlatformBitmapForScaleFactor (transformedScaleFactor);
CGBitmap* cgBitmap = platformBitmap ? dynamic_cast<CGBitmap*> (platformBitmap) : 0;
CGImageRef image = cgBitmap ? cgBitmap->getCGImage () : 0;
if (image)
{
CGContextRef context = beginCGContext (false, true);
if (context)
{
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));
}
else
{
it->second++;
layer = cgBitmap->createCGLayer (context);
}
}
drawCGImageRef (context, image, layer, cgBitmap->getScaleFactor (), inRect, inOffset, alpha, bitmap);
releaseCGContext (context);
}
}
}
