//-----------------------------------------------------------------------------
IPlatformBitmap* CBitmap::getBestPlatformBitmapForScaleFactor (double scaleFactor) const
{
if (bitmaps.empty ())
return 0;
IPlatformBitmap* bestBitmap = bitmaps[0];
double bestDiff = std::abs (scaleFactor - bestBitmap->getScaleFactor ());
VSTGUI_RANGE_BASED_FOR_LOOP (BitmapVector, bitmaps, BitmapPointer, bitmap)
if (bitmap->getScaleFactor () == scaleFactor)
return bitmap;
else if (std::abs (scaleFactor - bitmap->getScaleFactor ()) <= bestDiff && bitmap->getScaleFactor () > bestBitmap->getScaleFactor ())
{
bestBitmap = bitmap;
bestDiff = std::abs (scaleFactor - bitmap->getScaleFactor ());
}
VSTGUI_RANGE_BASED_FOR_LOOP_END
return bestBitmap;
}
//-----------------------------------------------------------------------------
void CGDrawContext::fillRectWithBitmap (CBitmap* bitmap, const CRect& srcRect, const CRect& dstRect, float alpha)
{
if (bitmap == 0 || alpha == 0.f || srcRect.isEmpty () || dstRect.isEmpty ())
return;
if (!(srcRect.left == 0 && srcRect.right == 0 && srcRect.right == bitmap->getWidth () && srcRect.bottom == bitmap->getHeight ()))
{
// CGContextDrawTiledImage does not work with parts of a bitmap
CDrawContext::fillRectWithBitmap(bitmap, srcRect, dstRect, alpha);
return;
}
IPlatformBitmap* platformBitmap = bitmap->getBestPlatformBitmapForScaleFactor (scaleFactor);
CPoint bitmapSize = platformBitmap->getSize ();
if (srcRect.right > bitmapSize.x || srcRect.bottom > bitmapSize.y)
return;
CGBitmap* cgBitmap = platformBitmap ? dynamic_cast<CGBitmap*> (platformBitmap) : 0;
CGImageRef image = cgBitmap ? cgBitmap->getCGImage () : 0;
if (image)
{
CGContextRef context = beginCGContext (false, true);
if (context)
{
// TODO: Check if this works with retina images
CGRect clipRect = CGRectFromCRect (dstRect);
clipRect.origin.y = -(clipRect.origin.y) - clipRect.size.height;
clipRect = pixelAlligned (clipRect);
CGContextClipToRect (context, clipRect);
CGRect r = {};
r.size.width = CGImageGetWidth (image);
r.size.height = CGImageGetHeight (image);
CGContextDrawTiledImage (context, r, image);
releaseCGContext (context);
}
}
}
//-----------------------------------------------------------------------------
void D2DDrawContext::drawBitmap (CBitmap* bitmap, const CRect& dest, const CPoint& offset, float alpha)
{
if (renderTarget == 0)
return;
D2DApplyClip ac (this);
if (ac.isEmpty ())
return;
double transformedScaleFactor = getScaleFactor ();
CGraphicsTransform t = getCurrentTransform ();
if (t.m11 == t.m22 && t.m12 == 0 && t.m21 == 0)
transformedScaleFactor *= t.m11;
IPlatformBitmap* platformBitmap = bitmap->getBestPlatformBitmapForScaleFactor (transformedScaleFactor);
D2DBitmap* d2dBitmap = platformBitmap ? dynamic_cast<D2DBitmap*> (platformBitmap) : 0;
if (d2dBitmap)
{
if (d2dBitmap->getSource ())
{
ID2D1Bitmap* d2d1Bitmap = D2DBitmapCache::instance ()->getBitmap (d2dBitmap, renderTarget);
if (d2d1Bitmap)
{
double bitmapScaleFactor = platformBitmap->getScaleFactor ();
CGraphicsTransform bitmapTransform;
bitmapTransform.scale (bitmapScaleFactor, bitmapScaleFactor);
Transform transform (*this, bitmapTransform.inverse ());
CRect d (dest);
d.makeIntegral ();
CRect source (dest);
source.offset (-source.left, -source.top);
source.offset (offset.x, offset.y);
bitmapTransform.transform (source);
D2D1_RECT_F sourceRect = makeD2DRect (source);
renderTarget->DrawBitmap (d2d1Bitmap, makeD2DRect (d), alpha * currentState.globalAlpha, D2D1_BITMAP_INTERPOLATION_MODE_LINEAR, &sourceRect);
}
}
}
}