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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FLUTTER_FLOW_LAYERS_CONTAINER_LAYER_H_
#define FLUTTER_FLOW_LAYERS_CONTAINER_LAYER_H_
#include <vector>
#include "flutter/flow/layers/layer.h"
namespace flutter {
class ContainerLayer : public Layer {
public:
ContainerLayer();
virtual void Add(std::shared_ptr<Layer> layer);
void Preroll(PrerollContext* context, const SkMatrix& matrix) override;
void Paint(PaintContext& context) const override;
#if defined(OS_FUCHSIA)
void UpdateScene(SceneUpdateContext& context) override;
#endif // defined(OS_FUCHSIA)
const std::vector<std::shared_ptr<Layer>>& layers() const { return layers_; }
protected:
void PrerollChildren(PrerollContext* context,
const SkMatrix& child_matrix,
SkRect* child_paint_bounds);
void PaintChildren(PaintContext& context) const;
#if defined(OS_FUCHSIA)
void UpdateSceneChildren(SceneUpdateContext& context);
#endif // defined(OS_FUCHSIA)
// For OpacityLayer to restructure to have a single child.
void ClearChildren() { layers_.clear(); }
private:
std::vector<std::shared_ptr<Layer>> layers_;
FML_DISALLOW_COPY_AND_ASSIGN(ContainerLayer);
};
} // namespace flutter
#endif // FLUTTER_FLOW_LAYERS_CONTAINER_LAYER_H_