diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/core/SkBitmap.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h index 1def198..84d069c 100644 --- a/include/core/SkBitmap.h +++ b/include/core/SkBitmap.h @@ -404,6 +404,19 @@ public: 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). + + @param dst The bitmap to be filled with alpha layer + @param paint The paint to draw with + @param allocator Allocator used to allocate the pixelref for the dst + bitmap. If this is null, the standard HeapAllocator + will be used. + @param offset If not null, it is set to top-left coordinate to position + the returned bitmap so that it visually lines up with the + original + */ void extractAlpha(SkBitmap* dst, const SkPaint* paint, Allocator* allocator, SkIPoint* offset) const; |