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// Copyright 2014 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 "cc/resources/clip_display_item.h"
#include "third_party/skia/include/core/SkCanvas.h"
namespace cc {
ClipDisplayItem::ClipDisplayItem(gfx::Rect clip_rect,
const std::vector<SkRRect>& rounded_clip_rects)
: clip_rect_(clip_rect), rounded_clip_rects_(rounded_clip_rects) {
}
ClipDisplayItem::~ClipDisplayItem() {
}
void ClipDisplayItem::Raster(SkCanvas* canvas,
SkDrawPictureCallback* callback) const {
canvas->save();
canvas->clipRect(SkRect::MakeXYWH(clip_rect_.x(), clip_rect_.y(),
clip_rect_.width(), clip_rect_.height()));
for (size_t i = 0; i < rounded_clip_rects_.size(); ++i) {
if (rounded_clip_rects_[i].isRect()) {
canvas->clipRect(rounded_clip_rects_[i].rect());
} else {
bool antialiased = true;
canvas->clipRRect(rounded_clip_rects_[i], SkRegion::kIntersect_Op,
antialiased);
}
}
}
bool ClipDisplayItem::IsSuitableForGpuRasterization() const {
return true;
}
int ClipDisplayItem::ApproximateOpCount() const {
return 1;
}
size_t ClipDisplayItem::PictureMemoryUsage() const {
size_t total_size = sizeof(gfx::Rect);
for (size_t i = 0; i < rounded_clip_rects_.size(); ++i) {
total_size += sizeof(rounded_clip_rects_[i]);
}
return total_size;
}
EndClipDisplayItem::EndClipDisplayItem() {
}
EndClipDisplayItem::~EndClipDisplayItem() {
}
void EndClipDisplayItem::Raster(SkCanvas* canvas,
SkDrawPictureCallback* callback) const {
canvas->restore();
}
bool EndClipDisplayItem::IsSuitableForGpuRasterization() const {
return true;
}
int EndClipDisplayItem::ApproximateOpCount() const {
return 0;
}
size_t EndClipDisplayItem::PictureMemoryUsage() const {
return 0;
}
} // namespace cc
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