diff options
Diffstat (limited to 'include/core/SkBitmap.h')
| -rw-r--r-- | include/core/SkBitmap.h | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h index 64a2a5b..1d21a2f 100644 --- a/include/core/SkBitmap.h +++ b/include/core/SkBitmap.h @@ -401,6 +401,13 @@ public: */ void* getAddr(int x, int y) const; + /** Return the SkColor of the specified pixel. In most cases this will + require un-premultiplying the color. Alpha only configs (A1 and A8) + return black with the appropriate alpha set. The value is undefined + for kNone_Config or if x or y are out of bounds. + */ + SkColor getColor(int x, int y) const; + /** Returns the address of the pixel specified by x,y for 32bit pixels. */ inline uint32_t* getAddr32(int x, int y) const; @@ -461,18 +468,18 @@ public: */ int extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy); - void extractAlpha(SkBitmap* dst) const { - this->extractAlpha(dst, NULL, NULL, NULL); + bool extractAlpha(SkBitmap* dst) const { + return this->extractAlpha(dst, NULL, NULL, NULL); } - void extractAlpha(SkBitmap* dst, const SkPaint* paint, + bool extractAlpha(SkBitmap* dst, const SkPaint* paint, SkIPoint* offset) const { - this->extractAlpha(dst, paint, NULL, offset); + return this->extractAlpha(dst, paint, NULL, offset); } /** Set dst to contain alpha layer of this bitmap. If destination bitmap fails to be initialized, e.g. because allocator can't allocate pixels - for it, dst will be resetted (zero width and height, no pixels). + for it, dst will not be modified and false will be returned. @param dst The bitmap to be filled with alpha layer @param paint The paint to draw with @@ -483,7 +490,7 @@ public: the returned bitmap so that it visually lines up with the original */ - void extractAlpha(SkBitmap* dst, const SkPaint* paint, Allocator* allocator, + bool extractAlpha(SkBitmap* dst, const SkPaint* paint, Allocator* allocator, SkIPoint* offset) const; void flatten(SkFlattenableWriteBuffer&) const; |