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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkData.h"
#include "SkDrawable.h"
#include "SkLayerInfo.h"
#include "SkPictureRecorder.h"
#include "SkRecord.h"
#include "SkRecordDraw.h"
#include "SkRecorder.h"
#include "SkRecordOpts.h"
#include "SkTypes.h"
SkPictureRecorder::SkPictureRecorder() {}
SkPictureRecorder::~SkPictureRecorder() {}
SkCanvas* SkPictureRecorder::beginRecording(const SkRect& cullRect,
SkBBHFactory* bbhFactory /* = NULL */,
uint32_t recordFlags /* = 0 */) {
fCullRect = cullRect;
fFlags = recordFlags;
if (bbhFactory) {
fBBH.reset((*bbhFactory)(cullRect));
SkASSERT(fBBH.get());
}
fRecord.reset(SkNEW(SkRecord));
fRecorder.reset(SkNEW_ARGS(SkRecorder, (fRecord.get(), cullRect)));
return this->getRecordingCanvas();
}
SkCanvas* SkPictureRecorder::getRecordingCanvas() {
return fRecorder.get();
}
SkPicture* SkPictureRecorder::endRecordingAsPicture() {
// TODO: delay as much of this work until just before first playback?
SkRecordOptimize(fRecord);
SkAutoTUnref<SkLayerInfo> saveLayerData;
if (fBBH && (fFlags & kComputeSaveLayerInfo_RecordFlag)) {
SkPicture::AccelData::Key key = SkLayerInfo::ComputeKey();
saveLayerData.reset(SkNEW_ARGS(SkLayerInfo, (key)));
}
SkDrawableList* drawableList = fRecorder->getDrawableList();
SkPicture::SnapshotArray* pictList = drawableList ? drawableList->newDrawableSnapshot() : NULL;
if (fBBH.get()) {
if (saveLayerData) {
SkRecordComputeLayers(fCullRect, *fRecord, pictList, fBBH.get(), saveLayerData);
} else {
SkRecordFillBounds(fCullRect, *fRecord, fBBH.get());
}
SkRect bbhBound = fBBH->getRootBound();
SkASSERT((bbhBound.isEmpty() || fCullRect.contains(bbhBound))
|| (bbhBound.isEmpty() && fCullRect.isEmpty()));
fCullRect = bbhBound;
}
SkPicture* pict = SkNEW_ARGS(SkPicture, (fCullRect, fRecord, pictList, fBBH));
if (saveLayerData) {
pict->EXPERIMENTAL_addAccelData(saveLayerData);
}
// release our refs now, so only the picture will be the owner.
fRecorder.reset(NULL);
fRecord.reset(NULL);
fBBH.reset(NULL);
return pict;
}
void SkPictureRecorder::partialReplay(SkCanvas* canvas) const {
if (NULL == canvas) {
return;
}
int drawableCount = 0;
SkDrawable* const* drawables = NULL;
SkDrawableList* drawableList = fRecorder->getDrawableList();
if (drawableList) {
drawableCount = drawableList->count();
drawables = drawableList->begin();
}
SkRecordDraw(*fRecord, canvas, NULL, drawables, drawableCount, NULL/*bbh*/, NULL/*callback*/);
}
///////////////////////////////////////////////////////////////////////////////////////////////////
class SkRecordedDrawable : public SkDrawable {
SkAutoTUnref<SkRecord> fRecord;
SkAutoTUnref<SkBBoxHierarchy> fBBH;
SkAutoTDelete<SkDrawableList> fDrawableList;
const SkRect fBounds;
const bool fDoSaveLayerInfo;
public:
SkRecordedDrawable(SkRecord* record, SkBBoxHierarchy* bbh, SkDrawableList* drawableList,
const SkRect& bounds, bool doSaveLayerInfo)
: fRecord(SkRef(record))
, fBBH(SkSafeRef(bbh))
, fDrawableList(drawableList) // we take ownership
, fBounds(bounds)
, fDoSaveLayerInfo(doSaveLayerInfo)
{}
protected:
SkRect onGetBounds() SK_OVERRIDE { return fBounds; }
void onDraw(SkCanvas* canvas) SK_OVERRIDE {
SkDrawable* const* drawables = NULL;
int drawableCount = 0;
if (fDrawableList) {
drawables = fDrawableList->begin();
drawableCount = fDrawableList->count();
}
SkRecordDraw(*fRecord, canvas, NULL, drawables, drawableCount, fBBH, NULL/*callback*/);
}
SkPicture* onNewPictureSnapshot() SK_OVERRIDE {
SkPicture::SnapshotArray* pictList = NULL;
if (fDrawableList) {
// TODO: should we plumb-down the BBHFactory and recordFlags from our host
// PictureRecorder?
pictList = fDrawableList->newDrawableSnapshot();
}
SkAutoTUnref<SkLayerInfo> saveLayerData;
if (fBBH && fDoSaveLayerInfo) {
SkPicture::AccelData::Key key = SkLayerInfo::ComputeKey();
saveLayerData.reset(SkNEW_ARGS(SkLayerInfo, (key)));
SkBBoxHierarchy* bbh = NULL; // we've already computed fBBH (received in constructor)
// TODO: update saveLayer info computation to reuse the already computed
// bounds in 'fBBH'
SkRecordComputeLayers(fBounds, *fRecord, pictList, bbh, saveLayerData);
}
SkPicture* pict = SkNEW_ARGS(SkPicture, (fBounds, fRecord, pictList, fBBH));
if (saveLayerData) {
pict->EXPERIMENTAL_addAccelData(saveLayerData);
}
return pict;
}
};
SkDrawable* SkPictureRecorder::endRecordingAsDrawable() {
// TODO: delay as much of this work until just before first playback?
SkRecordOptimize(fRecord);
if (fBBH.get()) {
SkRecordFillBounds(fCullRect, *fRecord, fBBH.get());
}
SkDrawable* drawable = SkNEW_ARGS(SkRecordedDrawable,
(fRecord, fBBH, fRecorder->detachDrawableList(),
fCullRect,
SkToBool(fFlags & kComputeSaveLayerInfo_RecordFlag)));
// release our refs now, so only the drawable will be the owner.
fRecorder.reset(NULL);
fRecord.reset(NULL);
fBBH.reset(NULL);
return drawable;
}
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