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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/debug/trace_event.h"
#include "cc/content_layer_client.h"
#include "cc/picture.h"
#include "cc/rendering_stats.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "ui/gfx/rect_conversions.h"
namespace cc {
scoped_refptr<Picture> Picture::Create() {
return make_scoped_refptr(new Picture());
}
Picture::Picture() : picture_(new SkPicture()) {
}
Picture::Picture(SkPicture* picture, gfx::Rect layer_rect,
gfx::Rect opaque_rect) :
layer_rect_(layer_rect),
opaque_rect_(opaque_rect),
picture_(picture) {
}
Picture::~Picture() {
}
scoped_refptr<Picture> Picture::Clone() {
// SkPicture is not thread-safe to rasterize with, so return a thread-safe
// clone of it.
SkPicture* clone = picture_->clone();
return make_scoped_refptr(new Picture(clone, layer_rect_, opaque_rect_));
}
void Picture::Record(ContentLayerClient* painter, gfx::Rect layer_rect,
RenderingStats& stats) {
TRACE_EVENT0("cc", "Picture::Record");
SkCanvas* canvas = picture_->beginRecording(
layer_rect.width(),
layer_rect.height(),
SkPicture::kOptimizeForClippedPlayback_RecordingFlag);
canvas->save();
canvas->translate(SkFloatToScalar(-layer_rect.x()),
SkFloatToScalar(-layer_rect.y()));
SkPaint paint;
paint.setAntiAlias(false);
paint.setXfermodeMode(SkXfermode::kClear_Mode);
SkRect layer_skrect = SkRect::MakeXYWH(layer_rect.x(),
layer_rect.y(),
layer_rect.width(),
layer_rect.height());
canvas->drawRect(layer_skrect, paint);
canvas->clipRect(layer_skrect);
gfx::RectF opaque_layer_rect;
base::TimeTicks beginPaintTime = base::TimeTicks::Now();
painter->paintContents(canvas, layer_rect, opaque_layer_rect);
double delta = (base::TimeTicks::Now() - beginPaintTime).InSecondsF();
stats.totalPaintTimeInSeconds += delta;
canvas->restore();
picture_->endRecording();
opaque_rect_ = gfx::ToEnclosedRect(opaque_layer_rect);
layer_rect_ = layer_rect;
}
void Picture::Raster(SkCanvas* canvas) {
TRACE_EVENT0("cc", "Picture::Raster");
canvas->translate(layer_rect_.x(), layer_rect_.y());
canvas->save();
canvas->drawPicture(*picture_);
canvas->restore();
}
} // namespace cc
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