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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Canvas.h"
#include "Picture.h"
#include "SkStream.h"
namespace android {
Picture::Picture(const Picture* src) {
if (NULL != src) {
mWidth = src->width();
mHeight = src->height();
if (NULL != src->mPicture.get()) {
mPicture.reset(SkRef(src->mPicture.get()));
} if (NULL != src->mRecorder.get()) {
mPicture.reset(src->makePartialCopy());
}
} else {
mWidth = 0;
mHeight = 0;
}
}
Canvas* Picture::beginRecording(int width, int height) {
mPicture.reset(NULL);
mRecorder.reset(new SkPictureRecorder);
mWidth = width;
mHeight = height;
SkCanvas* canvas = mRecorder->beginRecording(width, height, NULL, 0);
// the java side will wrap this guy in a Canvas.java, which will call
// unref in its finalizer, so we have to ref it here, so that both that
// Canvas.java and our picture can both be owners
canvas->ref();
return Canvas::create_canvas(canvas);
}
void Picture::endRecording() {
if (NULL != mRecorder.get()) {
mPicture.reset(mRecorder->endRecording());
mRecorder.reset(NULL);
}
}
int Picture::width() const {
if (NULL != mPicture.get()) {
SkASSERT(mPicture->width() == mWidth);
SkASSERT(mPicture->height() == mHeight);
}
return mWidth;
}
int Picture::height() const {
if (NULL != mPicture.get()) {
SkASSERT(mPicture->width() == mWidth);
SkASSERT(mPicture->height() == mHeight);
}
return mHeight;
}
Picture* Picture::CreateFromStream(SkStream* stream) {
Picture* newPict = new Picture;
newPict->mPicture.reset(SkPicture::CreateFromStream(stream));
if (NULL != newPict->mPicture.get()) {
newPict->mWidth = newPict->mPicture->width();
newPict->mHeight = newPict->mPicture->height();
}
return newPict;
}
void Picture::serialize(SkWStream* stream) const {
if (NULL != mRecorder.get()) {
SkAutoTDelete<SkPicture> tempPict(this->makePartialCopy());
tempPict->serialize(stream);
} else if (NULL != mPicture.get()) {
mPicture->serialize(stream);
} else {
SkPicture empty;
empty.serialize(stream);
}
}
void Picture::draw(Canvas* canvas) {
if (NULL != mRecorder.get()) {
this->endRecording();
SkASSERT(NULL != mPicture.get());
}
if (NULL != mPicture.get()) {
// TODO: remove this const_cast once pictures are immutable
const_cast<SkPicture*>(mPicture.get())->draw(canvas->getSkCanvas());
}
}
SkPicture* Picture::makePartialCopy() const {
SkASSERT(NULL != mRecorder.get());
SkPictureRecorder reRecorder;
SkCanvas* canvas = reRecorder.beginRecording(mWidth, mHeight, NULL, 0);
mRecorder->partialReplay(canvas);
return reRecorder.endRecording();
}
}; // namespace android
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