solid_rsuperellipse_blur_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_SOLID_RSUPERELLIPSE_BLUR_CONTENTS_H_
#define FLUTTER_IMPELLER_ENTITY_CONTENTS_SOLID_RSUPERELLIPSE_BLUR_CONTENTS_H_
 
#include <functional>
#include <memory>
#include <vector>
 
#include "impeller/entity/contents/contents.h"
#include "impeller/entity/contents/filters/filter_contents.h"
#include "impeller/entity/contents/solid_rrect_like_blur_contents.h"
#include "impeller/geometry/color.h"
 
namespace impeller {
 
/// @brief  Draws a fast solid color blur of an rounded superellipse. Only
/// supports RSuperellipses with fully symmetrical radii. Also produces correct
/// results for rectangles (corner_radius=0) and circles
/// (corner_radius=width/2=height/2).
class SolidRSuperellipseBlurContents final : public SolidRRectLikeBlurContents {
 public:
  SolidRSuperellipseBlurContents();
 
  ~SolidRSuperellipseBlurContents() override;
 
 private:
  // |SolidRRectLikeBlurContents|
  bool SetPassInfo(RenderPass& pass,
                   const ContentContext& renderer,
                   PassContext& pass_context) const override;
 
  SolidRSuperellipseBlurContents(const SolidRSuperellipseBlurContents&) =
      delete;
 
  SolidRSuperellipseBlurContents& operator=(
      const SolidRSuperellipseBlurContents&) = delete;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ENTITY_CONTENTS_SOLID_RSUPERELLIPSE_BLUR_CONTENTS_H_