border_mask_blur_filter_contents.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_IMPELLER_ENTITY_CONTENTS_FILTERS_BORDER_MASK_BLUR_FILTER_CONTENTS_H_
#define FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_BORDER_MASK_BLUR_FILTER_CONTENTS_H_
 
#include <memory>
#include <optional>
#include "impeller/entity/contents/filters/filter_contents.h"
#include "impeller/entity/contents/filters/inputs/filter_input.h"
 
namespace impeller {
 
class BorderMaskBlurFilterContents final : public FilterContents {
 public:
  BorderMaskBlurFilterContents();
 
  ~BorderMaskBlurFilterContents() override;
 
  void SetSigma(Sigma sigma_x, Sigma sigma_y);
 
  void SetBlurStyle(BlurStyle blur_style);
 
  // |FilterContents|
  std::optional<Rect> GetFilterCoverage(
      const FilterInput::Vector& inputs,
      const Entity& entity,
      const Matrix& effect_transform) const override;
 
  // |FilterContents|
  std::optional<Rect> GetFilterSourceCoverage(
      const Matrix& effect_transform,
      const Rect& output_limit) const override;
 
 private:
  // |FilterContents|
  std::optional<Entity> RenderFilter(
      const FilterInput::Vector& input_textures,
      const ContentContext& renderer,
      const Entity& entity,
      const Matrix& effect_transform,
      const Rect& coverage,
      const std::optional<Rect>& coverage_hint) const override;
 
  Sigma sigma_x_;
  Sigma sigma_y_;
  BlurStyle blur_style_ = BlurStyle::kNormal;
  bool src_color_factor_ = false;
  bool inner_blur_factor_ = true;
  bool outer_blur_factor_ = true;
 
  BorderMaskBlurFilterContents(const BorderMaskBlurFilterContents&) = delete;
 
  BorderMaskBlurFilterContents& operator=(const BorderMaskBlurFilterContents&) =
      delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_BORDER_MASK_BLUR_FILTER_CONTENTS_H_