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* Copyright 2011 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef SkCGUtils_DEFINED
#define SkCGUtils_DEFINED
#include "include/core/SkImage.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkSize.h"
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
#include <ApplicationServices/ApplicationServices.h>
#include <CoreGraphics/CoreGraphics.h>
class SkBitmap;
class SkData;
class SkPixmap;
class SkStreamRewindable;
SK_API CGContextRef SkCreateCGContext(const SkPixmap&);
* Given a CGImage, allocate an SkBitmap and copy the image's pixels into it. If scaleToFit is not
* null, use it to determine the size of the bitmap, and scale the image to fill the bitmap.
* Otherwise use the image's width/height.
* On failure, return false, and leave bitmap unchanged.
SK_API bool SkCreateBitmapFromCGImage(SkBitmap* dst, CGImageRef src);
SK_API sk_sp<SkImage> SkMakeImageFromCGImage(CGImageRef);
* Copy the pixels from src into the memory specified by info/rowBytes/dstPixels. On failure,
* return false (e.g. ImageInfo incompatible with src).
SK_API bool SkCopyPixelsFromCGImage(const SkImageInfo& info, size_t rowBytes, void* dstPixels,
CGImageRef src);
static inline bool SkCopyPixelsFromCGImage(const SkPixmap& dst, CGImageRef src) {
return SkCopyPixelsFromCGImage(, dst.rowBytes(), dst.writable_addr(), src);
* Create an imageref from the specified bitmap using the specified colorspace.
* If space is NULL, then CGColorSpaceCreateDeviceRGB() is used.
SK_API CGImageRef SkCreateCGImageRefWithColorspace(const SkBitmap& bm,
CGColorSpaceRef space);
* Create an imageref from the specified bitmap using the colorspace returned
* by CGColorSpaceCreateDeviceRGB()
static inline CGImageRef SkCreateCGImageRef(const SkBitmap& bm) {
return SkCreateCGImageRefWithColorspace(bm, NULL);
* Draw the bitmap into the specified CG context. The bitmap will be converted
* to a CGImage using the generic RGB colorspace. (x,y) specifies the position
* of the top-left corner of the bitmap. The bitmap is converted using the
* colorspace returned by CGColorSpaceCreateDeviceRGB()
void SkCGDrawBitmap(CGContextRef, const SkBitmap&, float x, float y);
* Return a provider that wraps the specified stream.
* When the provider is finally deleted, it will delete the stream.
CGDataProviderRef SkCreateDataProviderFromStream(std::unique_ptr<SkStreamRewindable>);
CGDataProviderRef SkCreateDataProviderFromData(sk_sp<SkData>);
#endif // defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
#endif // SkCGUtils_DEFINED