blob: caf7d3df92a8ca500e8774d9ccbe9809ce309c28 [file] [log] [blame]
/*
* 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 <memory>
#include "include/core/SkData.h"
#include "include/core/SkDrawable.h"
#include "include/core/SkPictureRecorder.h"
#include "include/core/SkTypes.h"
#include "src/core/SkBigPicture.h"
#include "src/core/SkRecord.h"
#include "src/core/SkRecordDraw.h"
#include "src/core/SkRecordOpts.h"
#include "src/core/SkRecordedDrawable.h"
#include "src/core/SkRecorder.h"
using namespace skia_private;
SkPictureRecorder::SkPictureRecorder() {
fActivelyRecording = false;
fRecorder = std::make_unique<SkRecorder>(nullptr, SkRect::MakeEmpty());
}
SkPictureRecorder::~SkPictureRecorder() {}
SkCanvas* SkPictureRecorder::beginRecording(const SkRect& userCullRect,
sk_sp<SkBBoxHierarchy> bbh) {
const SkRect cullRect = userCullRect.isEmpty() ? SkRect::MakeEmpty() : userCullRect;
fCullRect = cullRect;
fBBH = std::move(bbh);
if (!fRecord) {
fRecord.reset(new SkRecord);
}
fRecorder->reset(fRecord.get(), cullRect);
fActivelyRecording = true;
return this->getRecordingCanvas();
}
SkCanvas* SkPictureRecorder::beginRecording(const SkRect& bounds, SkBBHFactory* factory) {
return this->beginRecording(bounds, factory ? (*factory)() : nullptr);
}
SkCanvas* SkPictureRecorder::getRecordingCanvas() {
return fActivelyRecording ? fRecorder.get() : nullptr;
}
class SkEmptyPicture final : public SkPicture {
public:
void playback(SkCanvas*, AbortCallback*) const override { }
size_t approximateBytesUsed() const override { return sizeof(*this); }
int approximateOpCount(bool nested) const override { return 0; }
SkRect cullRect() const override { return SkRect::MakeEmpty(); }
};
sk_sp<SkPicture> SkPictureRecorder::finishRecordingAsPicture() {
fActivelyRecording = false;
fRecorder->restoreToCount(1); // If we were missing any restores, add them now.
if (fRecord->count() == 0) {
return sk_make_sp<SkEmptyPicture>();
}
// TODO: delay as much of this work until just before first playback?
SkRecordOptimize(fRecord.get());
SkDrawableList* drawableList = fRecorder->getDrawableList();
std::unique_ptr<SkBigPicture::SnapshotArray> pictList{
drawableList ? drawableList->newDrawableSnapshot() : nullptr
};
if (fBBH) {
AutoTMalloc<SkRect> bounds(fRecord->count());
AutoTMalloc<SkBBoxHierarchy::Metadata> meta(fRecord->count());
SkRecordFillBounds(fCullRect, *fRecord, bounds, meta);
fBBH->insert(bounds, meta, fRecord->count());
// Now that we've calculated content bounds, we can update fCullRect, often trimming it.
SkRect bbhBound = SkRect::MakeEmpty();
for (int i = 0; i < fRecord->count(); i++) {
bbhBound.join(bounds[i]);
}
SkASSERT((bbhBound.isEmpty() || fCullRect.contains(bbhBound))
|| (bbhBound.isEmpty() && fCullRect.isEmpty()));
fCullRect = bbhBound;
}
size_t subPictureBytes = fRecorder->approxBytesUsedBySubPictures();
for (int i = 0; pictList && i < pictList->count(); i++) {
subPictureBytes += pictList->begin()[i]->approximateBytesUsed();
}
return sk_make_sp<SkBigPicture>(fCullRect,
std::move(fRecord),
std::move(pictList),
std::move(fBBH),
subPictureBytes);
}
sk_sp<SkPicture> SkPictureRecorder::finishRecordingAsPictureWithCull(const SkRect& cullRect) {
fCullRect = cullRect;
return this->finishRecordingAsPicture();
}
void SkPictureRecorder::partialReplay(SkCanvas* canvas) const {
if (nullptr == canvas) {
return;
}
int drawableCount = 0;
SkDrawable* const* drawables = nullptr;
SkDrawableList* drawableList = fRecorder->getDrawableList();
if (drawableList) {
drawableCount = drawableList->count();
drawables = drawableList->begin();
}
SkRecordDraw(*fRecord, canvas, nullptr, drawables, drawableCount, nullptr/*bbh*/, nullptr/*callback*/);
}
sk_sp<SkDrawable> SkPictureRecorder::finishRecordingAsDrawable() {
fActivelyRecording = false;
fRecorder->restoreToCount(1); // If we were missing any restores, add them now.
SkRecordOptimize(fRecord.get());
if (fBBH) {
AutoTMalloc<SkRect> bounds(fRecord->count());
AutoTMalloc<SkBBoxHierarchy::Metadata> meta(fRecord->count());
SkRecordFillBounds(fCullRect, *fRecord, bounds, meta);
fBBH->insert(bounds, meta, fRecord->count());
}
sk_sp<SkDrawable> drawable =
sk_make_sp<SkRecordedDrawable>(std::move(fRecord), std::move(fBBH),
fRecorder->detachDrawableList(), fCullRect);
return drawable;
}