image_filter.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_LIB_UI_PAINTING_IMAGE_FILTER_H_
#define FLUTTER_LIB_UI_PAINTING_IMAGE_FILTER_H_
 
#include "flutter/display_list/dl_sampling_options.h"
#include "flutter/display_list/effects/dl_image_filter.h"
#include "flutter/lib/ui/dart_wrapper.h"
#include "flutter/lib/ui/painting/color_filter.h"
#include "lib/ui/painting/fragment_shader.h"
#include "third_party/tonic/typed_data/typed_list.h"
 
namespace tonic {
class DartLibraryNatives;
}  // namespace tonic
 
namespace flutter {
 
class ImageFilter : public RefCountedDartWrappable<ImageFilter> {
  DEFINE_WRAPPERTYPEINFO();
  FML_FRIEND_MAKE_REF_COUNTED(ImageFilter);
 
 public:
  ~ImageFilter() override;
  static void Create(Dart_Handle wrapper);
 
  static DlImageSampling SamplingFromIndex(int filterQualityIndex);
  static DlFilterMode FilterModeFromIndex(int index);
 
  void initBlur(double sigma_x, double sigma_y, int tile_mode_index);
  void initDilate(double radius_x, double radius_y);
  void initErode(double radius_x, double radius_y);
  void initMatrix(const tonic::Float64List& matrix4, int filter_quality_index);
  void initColorFilter(ColorFilter* colorFilter);
  void initComposeFilter(ImageFilter* outer, ImageFilter* inner);
  void initShader(ReusableFragmentShader* shader);
  static bool equals(ImageFilter* a, ImageFilter* b);
 
  const std::shared_ptr<DlImageFilter> filter(DlTileMode mode) const;
 
  static void RegisterNatives(tonic::DartLibraryNatives* natives);
 
 private:
  ImageFilter();
 
  std::shared_ptr<DlImageFilter> filter_;
  bool is_dynamic_tile_mode_ = false;
};
 
}  // namespace flutter
 
#endif  // FLUTTER_LIB_UI_PAINTING_IMAGE_FILTER_H_