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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSGOpacityEffect_DEFINED
#define SkSGOpacityEffect_DEFINED
#include "SkSGEffectNode.h"
namespace sksg {
/**
* Concrete Effect node, applying opacity to its descendants.
*
*/
class OpacityEffect final : public EffectNode {
public:
static sk_sp<OpacityEffect> Make(sk_sp<RenderNode> child, float opacity = 1) {
return child ? sk_sp<OpacityEffect>(new OpacityEffect(std::move(child), opacity)) : nullptr;
}
SG_ATTRIBUTE(Opacity, float, fOpacity)
protected:
OpacityEffect(sk_sp<RenderNode>, float);
void onRender(SkCanvas*) const override;
SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
private:
float fOpacity;
typedef EffectNode INHERITED;
};
} // namespace sksg
#endif // SkSGOpacityEffect_DEFINED
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