1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 #ifndef SkKeyedImage_DEFINED 8 #define SkKeyedImage_DEFINED 9 10 #include "SkBitmap.h" 11 #include "SkBitmapKey.h" 12 #include "SkImage.h" 13 14 /** 15 This class has all the advantages of SkBitmaps and SkImages. 16 17 The SkImage holds on to encoded data. The SkBitmapKey properly de-dups subsets. 18 */ 19 class SkKeyedImage { 20 public: 21 SkKeyedImage() {} 22 SkKeyedImage(sk_sp<SkImage>); 23 SkKeyedImage(const SkBitmap&); 24 SkKeyedImage(SkKeyedImage&&) = default; 25 SkKeyedImage(const SkKeyedImage&) = default; 26 27 SkKeyedImage& operator=(SkKeyedImage&&) = default; 28 SkKeyedImage& operator=(const SkKeyedImage&) = default; 29 30 explicit operator bool() const { return fImage; } 31 const SkBitmapKey& key() const { return fKey; } 32 const sk_sp<SkImage>& image() const { return fImage; } 33 sk_sp<SkImage> release(); 34 SkKeyedImage subset(SkIRect subset) const; 35 36 private: 37 sk_sp<SkImage> fImage; 38 SkBitmapKey fKey = {{0, 0, 0, 0}, 0}; 39 }; 40 41 /** 42 * Given an Image, return the Bitmap Key that corresponds to it. If the Image 43 * wraps a Bitmap, use that Bitmap's key. 44 */ 45 SkBitmapKey SkBitmapKeyFromImage(const SkImage*); 46 #endif // SkKeyedImage_DEFINED 47
