image_filter_layer.h

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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_IMAGE_FILTER_LAYER_H_
#define FLUTTER_FLOW_LAYERS_IMAGE_FILTER_LAYER_H_
 
#include <memory>
#include "flutter/flow/layers/cacheable_layer.h"
 
namespace flutter {
 
class ImageFilterLayer : public CacheableContainerLayer {
 public:
  explicit ImageFilterLayer(const std::shared_ptr<DlImageFilter>& filter,
                            const DlPoint& offset = DlPoint());
 
  void Diff(DiffContext* context, const Layer* old_layer) override;
 
  void Preroll(PrerollContext* context) override;
 
  void Paint(PaintContext& context) const override;
 
 private:
  DlPoint offset_;
  const std::shared_ptr<DlImageFilter> filter_;
  std::shared_ptr<DlImageFilter> transformed_filter_;
 
  FML_DISALLOW_COPY_AND_ASSIGN(ImageFilterLayer);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_FLOW_LAYERS_IMAGE_FILTER_LAYER_H_