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 8 #include "SkKeyedImage.h" 9 10 #include "SkImage_Base.h" 11 12 SkBitmapKey SkBitmapKeyFromImage(const SkImage* image) { 13 if (!image) { 14 return {{0, 0, 0, 0}, 0}; 15 } 16 if (const SkBitmap* bm = as_IB(image)->onPeekBitmap()) { 17 SkIPoint o = bm->pixelRefOrigin(); 18 return {image->bounds().makeOffset(o.x(), o.y()), bm->getGenerationID()}; 19 } 20 return {image->bounds(), image->uniqueID()}; 21 } 22 23 SkKeyedImage::SkKeyedImage(sk_sp<SkImage> i) : fImage(std::move(i)) { 24 fKey = SkBitmapKeyFromImage(fImage.get()); 25 } 26 27 SkKeyedImage::SkKeyedImage(const SkBitmap& bm) : fImage(SkImage::MakeFromBitmap(bm)) { 28 if (fImage) { 29 fKey = {bm.getSubset(), bm.getGenerationID()}; 30 } 31 } 32 33 SkKeyedImage SkKeyedImage::subset(SkIRect subset) const { 34 SkKeyedImage img; 35 if (fImage && subset.intersect(fImage->bounds())) { 36 img.fImage = fImage->makeSubset(subset); 37 if (img.fImage) { 38 img.fKey = {subset.makeOffset(fKey.fSubset.x(), fKey.fSubset.y()), fKey.fID}; 39 } 40 } 41 return img; 42 } 43 44 sk_sp<SkImage> SkKeyedImage::release() { 45 sk_sp<SkImage> image = std::move(fImage); 46 SkASSERT(nullptr == fImage); 47 fKey = {{0, 0, 0, 0}, 0}; 48 return image; 49 } 50
