1 /* 2 * Copyright 2014 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 SkPicturePlayback_DEFINED 9 #define SkPicturePlayback_DEFINED 10 11 #include "SkPictureFlat.h" // for DrawType 12 13 class SkBitmap; 14 class SkCanvas; 15 class SkPaint; 16 class SkPictureData; 17 18 // The basic picture playback class replays the provided picture into a canvas. 19 class SkPicturePlayback final : SkNoncopyable { 20 public: 21 SkPicturePlayback(const SkPictureData* data) 22 : fPictureData(data) 23 , fCurOffset(0) { 24 } 25 26 void draw(SkCanvas* canvas, SkPicture::AbortCallback*, SkReadBuffer* buffer); 27 28 // TODO: remove the curOp calls after cleaning up GrGatherDevice 29 // Return the ID of the operation currently being executed when playing 30 // back. 0 indicates no call is active. 31 size_t curOpID() const { return fCurOffset; } 32 void resetOpID() { fCurOffset = 0; } 33 34 protected: 35 const SkPictureData* fPictureData; 36 37 // The offset of the current operation when within the draw method 38 size_t fCurOffset; 39 40 void handleOp(SkReadBuffer* reader, 41 DrawType op, 42 uint32_t size, 43 SkCanvas* canvas, 44 const SkMatrix& initialMatrix); 45 46 static DrawType ReadOpAndSize(SkReadBuffer* reader, uint32_t* size); 47 48 class AutoResetOpID { 49 public: 50 AutoResetOpID(SkPicturePlayback* playback) : fPlayback(playback) { } 51 ~AutoResetOpID() { 52 if (fPlayback) { 53 fPlayback->resetOpID(); 54 } 55 } 56 57 private: 58 SkPicturePlayback* fPlayback; 59 }; 60 61 private: 62 typedef SkNoncopyable INHERITED; 63 }; 64 65 #endif 66
