1 /* 2 * Copyright 2015 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 #ifndef SkBitmapController_DEFINED 9 #define SkBitmapController_DEFINED 10 11 #include "SkBitmap.h" 12 #include "SkBitmapCache.h" 13 #include "SkFilterQuality.h" 14 #include "SkMatrix.h" 15 16 class SkBitmapProvider; 17 18 /** 19 * Handles request to scale, filter, and lock a bitmap to be rasterized. 20 */ 21 class SkBitmapController : ::SkNoncopyable { 22 public: 23 class State : ::SkNoncopyable { 24 public: 25 virtual ~State() {} 26 27 const SkPixmap& pixmap() const { return fPixmap; } 28 const SkMatrix& invMatrix() const { return fInvMatrix; } 29 SkFilterQuality quality() const { return fQuality; } 30 31 protected: 32 SkPixmap fPixmap; 33 SkMatrix fInvMatrix; 34 SkFilterQuality fQuality; 35 36 private: 37 friend class SkBitmapController; 38 }; 39 40 virtual ~SkBitmapController() {} 41 42 State* requestBitmap(const SkBitmapProvider&, const SkMatrix& inverse, SkFilterQuality, 43 void* storage, size_t storageSize); 44 45 State* requestBitmap(const SkBitmapProvider& bp, const SkMatrix& inv, SkFilterQuality quality) { 46 return this->requestBitmap(bp, inv, quality, nullptr, 0); 47 } 48 49 protected: 50 virtual State* onRequestBitmap(const SkBitmapProvider&, const SkMatrix& inv, SkFilterQuality, 51 void* storage, size_t storageSize) = 0; 52 }; 53 54 /////////////////////////////////////////////////////////////////////////////////////////////////// 55 56 class SkDefaultBitmapController : public SkBitmapController { 57 public: 58 SkDefaultBitmapController() {} 59 60 protected: 61 State* onRequestBitmap(const SkBitmapProvider&, const SkMatrix& inverse, SkFilterQuality, 62 void* storage, size_t storageSize) override; 63 }; 64 65 #endif 66
