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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_GRAPHICS_PICTURE_H
     18 #define ANDROID_GRAPHICS_PICTURE_H
     19 
     20 #include "SkPicture.h"
     21 #include "SkPictureRecorder.h"
     22 #include "SkRefCnt.h"
     23 #include "SkTemplates.h"
     24 
     25 class SkStream;
     26 class SkWStream;
     27 
     28 namespace android {
     29 
     30 class Canvas;
     31 
     32 // Skia's SkPicture class has been split into an SkPictureRecorder
     33 // and an SkPicture. AndroidPicture recreates the functionality
     34 // of the old SkPicture interface by flip-flopping between the two
     35 // new classes.
     36 class Picture {
     37 public:
     38     explicit Picture(const Picture* src = NULL);
     39 
     40     Canvas* beginRecording(int width, int height);
     41 
     42     void endRecording();
     43 
     44     int width() const;
     45 
     46     int height() const;
     47 
     48     static Picture* CreateFromStream(SkStream* stream);
     49 
     50     void serialize(SkWStream* stream) const;
     51 
     52     void draw(Canvas* canvas);
     53 
     54 private:
     55     int mWidth;
     56     int mHeight;
     57     SkAutoTUnref<const SkPicture> mPicture;
     58     SkAutoTDelete<SkPictureRecorder> mRecorder;
     59 
     60     // Make a copy of a picture that is in the midst of being recorded. The
     61     // resulting picture will have balanced saves and restores.
     62     SkPicture* makePartialCopy() const;
     63 };
     64 
     65 }; // namespace android
     66 #endif // ANDROID_GRAPHICS_PICTURE_H
     67