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We push a bit up the tree during preroll to learn whether there system composited layers below each layer. During update scene, we squash down to paint tasks, which we execute after publishing the new scene.
37 lines
962 B
C++
37 lines
962 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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#ifndef FLUTTER_FLOW_LAYERS_TRANSFORM_LAYER_H_
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#define FLUTTER_FLOW_LAYERS_TRANSFORM_LAYER_H_
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#include "flutter/flow/layers/container_layer.h"
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namespace flow {
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class TransformLayer : public ContainerLayer {
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public:
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TransformLayer();
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~TransformLayer() override;
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void set_transform(const SkMatrix& transform) { transform_ = transform; }
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protected:
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void Preroll(PrerollContext* context, const SkMatrix& matrix) override;
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void Paint(PaintContext& context) override;
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#if defined(OS_FUCHSIA)
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void UpdateScene(SceneUpdateContext& context,
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mozart::Node* container) override;
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#endif // defined(OS_FUCHSIA)
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private:
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SkMatrix transform_;
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FTL_DISALLOW_COPY_AND_ASSIGN(TransformLayer);
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};
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} // namespace flow
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#endif // FLUTTER_FLOW_LAYERS_TRANSFORM_LAYER_H_
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