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For https://github.com/flutter/flutter/issues/33807 We still need to make layers' children immutable for full immutability. That will require us to change the SceneBuilder API to build the layer bottom up instead of top down (post-order traversal instead of pre-order traversal).
36 lines
1.0 KiB
C++
36 lines
1.0 KiB
C++
// Copyright 2013 The Flutter 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 flutter {
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// Be careful that SkMatrix's default constructor doesn't initialize the matrix
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// at all. Hence |set_transform| must be called with an initialized SkMatrix.
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class TransformLayer : public ContainerLayer {
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public:
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TransformLayer(const SkMatrix& transform);
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~TransformLayer() override;
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void Preroll(PrerollContext* context, const SkMatrix& matrix) override;
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void Paint(PaintContext& context) const override;
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#if defined(OS_FUCHSIA)
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void UpdateScene(SceneUpdateContext& context) override;
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#endif // defined(OS_FUCHSIA)
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private:
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SkMatrix transform_;
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FML_DISALLOW_COPY_AND_ASSIGN(TransformLayer);
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};
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} // namespace flutter
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#endif // FLUTTER_FLOW_LAYERS_TRANSFORM_LAYER_H_
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