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 
24 #include <memory>
25 
26 class SkStream;
27 class SkWStream;
28 
29 namespace android {
30 
31 class Canvas;
32 
33 // Skia's SkPicture class has been split into an SkPictureRecorder
34 // and an SkPicture. AndroidPicture recreates the functionality
35 // of the old SkPicture interface by flip-flopping between the two
36 // new classes.
37 class Picture {
38 public:
39     explicit Picture(const Picture* src = NULL);
40 
41     Canvas* beginRecording(int width, int height);
42 
43     void endRecording();
44 
45     int width() const;
46 
47     int height() const;
48 
49     static Picture* CreateFromStream(SkStream* stream);
50 
51     void serialize(SkWStream* stream) const;
52 
53     void draw(Canvas* canvas);
54 
55 private:
56     int mWidth;
57     int mHeight;
58     sk_sp<SkPicture> mPicture;
59     std::unique_ptr<SkPictureRecorder> mRecorder;
60 
61     // Make a copy of a picture that is in the midst of being recorded. The
62     // resulting picture will have balanced saves and restores.
63     sk_sp<SkPicture> makePartialCopy() const;
64 };
65 
66 }; // namespace android
67 #endif // ANDROID_GRAPHICS_PICTURE_H_
68