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32 lines
823 B
C++
32 lines
823 B
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flow/layers/opacity_layer.h"
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namespace flow {
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OpacityLayer::OpacityLayer() {
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}
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OpacityLayer::~OpacityLayer() {
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}
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void OpacityLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
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ContainerLayer::Preroll(context, matrix);
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set_paint_bounds(context->child_paint_bounds);
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}
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void OpacityLayer::Paint(PaintContext::ScopedFrame& frame) {
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SkPaint paint;
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paint.setColor(SkColorSetARGB(alpha_, 0, 0, 0));
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paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
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SkCanvas& canvas = frame.canvas();
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SkAutoCanvasRestore save(&canvas, false);
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canvas.saveLayer(&paint_bounds(), &paint);
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PaintChildren(frame);
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}
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} // namespace flow
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