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/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <sys/types.h>
#include <cstdint>
#include "Layer.h"
namespace android {
// A layer that can render a combination of the following effects.
// * fill the bounds of the layer with a color
// * render a shadow cast by the bounds of the layer
// If no effects are enabled, the layer is considered to be invisible.
class EffectLayer : public Layer {
public:
explicit EffectLayer(const LayerCreationArgs&);
~EffectLayer() override;
sp<compositionengine::LayerFE> getCompositionEngineLayerFE() const override;
compositionengine::LayerFECompositionState* editCompositionState() override;
const char* getType() const override { return "EffectLayer"; }
bool isVisible() const override;
bool setColor(const half3& color) override;
bool setDataspace(ui::Dataspace dataspace) override;
ui::Dataspace getDataSpace() const override;
bool isOpaque(const Layer::State& s) const override;
protected:
/*
* compositionengine::LayerFE overrides
*/
const compositionengine::LayerFECompositionState* getCompositionState() const override;
void preparePerFrameCompositionState() override;
std::vector<compositionengine::LayerFE::LayerSettings> prepareClientCompositionList(
compositionengine::LayerFE::ClientCompositionTargetSettings& targetSettings) override;
std::unique_ptr<compositionengine::LayerFECompositionState> mCompositionState;
sp<Layer> createClone() override;
private:
// Returns true if there is a valid color to fill.
bool fillsColor() const;
// Returns true if this layer has a blur value.
bool hasBlur() const;
bool hasSomethingToDraw() const { return fillsColor() || drawShadows() || hasBlur(); }
};
} // namespace android
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