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// Copyright 2015 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 "ui/compositor/clip_transform_recorder.h"
#include "base/logging.h"
#include "cc/playback/clip_display_item.h"
#include "cc/playback/clip_path_display_item.h"
#include "cc/playback/display_item_list.h"
#include "cc/playback/transform_display_item.h"
#include "ui/compositor/paint_context.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/path.h"
namespace ui {
ClipTransformRecorder::ClipTransformRecorder(const PaintContext& context)
: context_(context), num_closers_(0) {
}
ClipTransformRecorder::~ClipTransformRecorder() {
for (size_t i = 0; i < num_closers_; ++i) {
switch (closers_[i]) {
case CLIP_RECT:
context_.list_->CreateAndAppendItem<cc::EndClipDisplayItem>();
break;
case CLIP_PATH:
context_.list_->CreateAndAppendItem<cc::EndClipPathDisplayItem>();
break;
case TRANSFORM:
context_.list_->CreateAndAppendItem<cc::EndTransformDisplayItem>();
break;
}
}
}
void ClipTransformRecorder::ClipRect(const gfx::Rect& clip_rect) {
auto* item = context_.list_->CreateAndAppendItem<cc::ClipDisplayItem>();
item->SetNew(clip_rect, std::vector<SkRRect>());
DCHECK_LT(num_closers_, arraysize(closers_));
closers_[num_closers_++] = CLIP_RECT;
}
void ClipTransformRecorder::ClipPath(const gfx::Path& clip_path) {
bool anti_alias = false;
auto* item = context_.list_->CreateAndAppendItem<cc::ClipPathDisplayItem>();
item->SetNew(clip_path, SkRegion::kIntersect_Op, anti_alias);
DCHECK_LT(num_closers_, arraysize(closers_));
closers_[num_closers_++] = CLIP_PATH;
}
void ClipTransformRecorder::ClipPathWithAntiAliasing(
const gfx::Path& clip_path) {
bool anti_alias = true;
auto* item = context_.list_->CreateAndAppendItem<cc::ClipPathDisplayItem>();
item->SetNew(clip_path, SkRegion::kIntersect_Op, anti_alias);
DCHECK_LT(num_closers_, arraysize(closers_));
closers_[num_closers_++] = CLIP_PATH;
}
void ClipTransformRecorder::Transform(const gfx::Transform& transform) {
auto* item = context_.list_->CreateAndAppendItem<cc::TransformDisplayItem>();
item->SetNew(transform);
DCHECK_LT(num_closers_, arraysize(closers_));
closers_[num_closers_++] = TRANSFORM;
}
} // namespace ui
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