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 #include "Canvas.h"
18 #include "Picture.h"
19
20 #include "SkStream.h"
21
22 namespace android {
23
Picture(const Picture * src)24 Picture::Picture(const Picture* src) {
25 if (NULL != src) {
26 mWidth = src->width();
27 mHeight = src->height();
28 if (NULL != src->mPicture.get()) {
29 mPicture.reset(SkRef(src->mPicture.get()));
30 } else if (NULL != src->mRecorder.get()) {
31 mPicture.reset(src->makePartialCopy());
32 }
33 validate();
34 } else {
35 mWidth = 0;
36 mHeight = 0;
37 }
38 }
39
beginRecording(int width,int height)40 Canvas* Picture::beginRecording(int width, int height) {
41 mPicture.reset(NULL);
42 mRecorder.reset(new SkPictureRecorder);
43 mWidth = width;
44 mHeight = height;
45 SkCanvas* canvas = mRecorder->beginRecording(width, height, NULL, 0);
46 return Canvas::create_canvas(canvas);
47 }
48
endRecording()49 void Picture::endRecording() {
50 if (NULL != mRecorder.get()) {
51 mPicture.reset(mRecorder->endRecording());
52 validate();
53 mRecorder.reset(NULL);
54 }
55 }
56
width() const57 int Picture::width() const {
58 validate();
59 return mWidth;
60 }
61
height() const62 int Picture::height() const {
63 validate();
64 return mHeight;
65 }
66
CreateFromStream(SkStream * stream)67 Picture* Picture::CreateFromStream(SkStream* stream) {
68 Picture* newPict = new Picture;
69
70 SkPicture* skPicture = SkPicture::CreateFromStream(stream);
71 if (NULL != skPicture) {
72 newPict->mPicture.reset(skPicture);
73
74 const SkIRect cullRect = skPicture->cullRect().roundOut();
75 newPict->mWidth = cullRect.width();
76 newPict->mHeight = cullRect.height();
77 }
78
79 return newPict;
80 }
81
serialize(SkWStream * stream) const82 void Picture::serialize(SkWStream* stream) const {
83 if (NULL != mRecorder.get()) {
84 SkAutoTDelete<SkPicture> tempPict(this->makePartialCopy());
85 tempPict->serialize(stream);
86 } else if (NULL != mPicture.get()) {
87 validate();
88 mPicture->serialize(stream);
89 } else {
90 SkPictureRecorder recorder;
91 recorder.beginRecording(0, 0);
92 SkAutoTUnref<SkPicture> empty(recorder.endRecording());
93 empty->serialize(stream);
94 }
95 }
96
draw(Canvas * canvas)97 void Picture::draw(Canvas* canvas) {
98 if (NULL != mRecorder.get()) {
99 this->endRecording();
100 SkASSERT(NULL != mPicture.get());
101 }
102 validate();
103 if (NULL != mPicture.get()) {
104 mPicture.get()->playback(canvas->asSkCanvas());
105 }
106 }
107
makePartialCopy() const108 SkPicture* Picture::makePartialCopy() const {
109 SkASSERT(NULL != mRecorder.get());
110
111 SkPictureRecorder reRecorder;
112
113 SkCanvas* canvas = reRecorder.beginRecording(mWidth, mHeight, NULL, 0);
114 mRecorder->partialReplay(canvas);
115 return reRecorder.endRecording();
116 }
117
validate() const118 void Picture::validate() const {
119 #ifdef SK_DEBUG
120 if (NULL != mPicture.get()) {
121 SkRect cullRect = mPicture->cullRect();
122 SkRect myRect = SkRect::MakeWH(SkIntToScalar(mWidth), SkIntToScalar(mHeight));
123 SkASSERT(cullRect == myRect);
124 }
125 #endif
126 }
127
128 }; // namespace android
129