blob: ab4bf8826ab1d2475382eb595e2acfe50f926160 [file] [log] [blame]
// 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/compositing_recorder.h"
#include "cc/paint/display_item_list.h"
#include "cc/paint/paint_op_buffer.h"
#include "ui/compositor/paint_context.h"
#include "ui/gfx/canvas.h"
namespace ui {
CompositingRecorder::CompositingRecorder(const PaintContext& context,
uint8_t alpha,
bool lcd_text_requires_opaque_layer)
: context_(context),
saved_(alpha < 255) {
if (!saved_)
return;
context_.list_->StartPaint();
context_.list_->push<cc::SaveLayerAlphaOp>(nullptr, alpha,
!lcd_text_requires_opaque_layer);
context_.list_->EndPaintOfPairedBegin();
}
CompositingRecorder::~CompositingRecorder() {
if (!saved_)
return;
context_.list_->StartPaint();
context_.list_->push<cc::RestoreOp>();
context_.list_->EndPaintOfPairedEnd();
}
} // namespace ui