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#import "NSImage+MGLAdditions.h"
@implementation NSImage (MGLAdditions)
- (std::unique_ptr<mbgl::SpriteImage>)mgl_spriteImage {
// Create a bitmap image representation from the image, respecting backing
// scale factor and any resizing done on the image at runtime.
// http://www.cocoabuilder.com/archive/cocoa/82430-nsimage-getting-raw-bitmap-data.html#82431
[self lockFocus];
NSBitmapImageRep *rep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:{ NSZeroPoint, self.size }];
[self unlockFocus];
// Get the image’s raw pixel data as an RGBA buffer.
std::string pixelString((const char *)rep.bitmapData, rep.pixelsWide * rep.pixelsHigh * 4 /* RGBA */);
mbgl::PremultipliedImage cPremultipliedImage({ static_cast<uint32_t>(rep.pixelsWide), static_cast<uint32_t>(rep.pixelsHigh) });
std::copy(rep.bitmapData, rep.bitmapData + cPremultipliedImage.bytes(), cPremultipliedImage.data.get());
return std::make_unique<mbgl::SpriteImage>(std::move(cPremultipliedImage),
(float)(rep.pixelsWide / self.size.width));
}
@end
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