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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/picture_pile_impl.h"
#include "third_party/skia/include/core/SkCanvas.h"
namespace cc {
scoped_refptr<PicturePileImpl> PicturePileImpl::Create() {
return make_scoped_refptr(new PicturePileImpl());
}
PicturePileImpl::PicturePileImpl() {
}
PicturePileImpl::~PicturePileImpl() {
}
scoped_refptr<PicturePileImpl> PicturePileImpl::CloneForDrawing() const {
TRACE_EVENT0("cc", "PicturePileImpl::CloneForDrawing");
scoped_refptr<PicturePileImpl> clone = Create();
clone->pile_.resize(pile_.size());
for (size_t i = 0; i < pile_.size(); ++i)
clone->pile_[i] = pile_[i]->Clone();
return clone;
}
void PicturePileImpl::Raster(SkCanvas* canvas, gfx::Rect rect) {
// TODO(enne): do this more efficiently, i.e. top down with Skia clips
canvas->save();
canvas->translate(-rect.x(), -rect.y());
SkRect layer_skrect = SkRect::MakeXYWH(rect.x(), rect.y(),
rect.width(), rect.height());
canvas->clipRect(layer_skrect);
for (size_t i = 0; i < pile_.size(); ++i) {
if (!pile_[i]->LayerRect().Intersects(rect))
continue;
pile_[i]->Raster(canvas);
}
canvas->restore();
}
} // namespace cc
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