bool MCGImageToCGImage(MCGImageRef p_src, const MCGIntegerRectangle &p_src_rect, CGColorSpaceRef p_colorspace, bool p_invert, CGImageRef &r_image)
{
MCGRaster t_raster;
if (!MCGImageGetRaster(p_src, t_raster))
return false;
if (p_invert)
{
return MCGRasterToCGImage(t_raster, p_src_rect, p_colorspace, true, true, r_image);
}
// If we don't need to modify the data then create image with data provider that references the MCGImageRef
bool t_success = true;
CGImageRef t_image = nil;
CGDataProviderRef t_data_provider = nil;
if (t_success)
t_success = MCGImageCreateCGDataProvider(p_src, p_src_rect, t_data_provider);
bool t_alpha;
t_alpha = !MCGImageIsOpaque(p_src);
CGBitmapInfo t_bm_info;
t_bm_info = MCGPixelFormatToCGBitmapInfo(kMCGPixelFormatNative, t_alpha);
if (t_success)
{
t_image = CGImageCreate(p_src_rect.size.width, p_src_rect.size.height, 8, 32, t_raster.stride, p_colorspace, t_bm_info, t_data_provider, nil, true, kCGRenderingIntentDefault);
t_success = t_image != nil;
}
CGDataProviderRelease(t_data_provider);
if (t_success)
r_image = t_image;
return t_success;
}
bool MCPatternIsOpaque(MCPatternRef p_pattern)
{
return p_pattern != nil && MCGImageIsOpaque(p_pattern->image);
}
