placeholder_filter_input.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_INPUTS_PLACEHOLDER_FILTER_INPUT_H_
#define FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_INPUTS_PLACEHOLDER_FILTER_INPUT_H_
 
#include "impeller/entity/contents/filters/inputs/filter_input.h"
 
namespace impeller {
 
class PlaceholderFilterInput final : public FilterInput {
 public:
  explicit PlaceholderFilterInput(Rect coverage);
 
  ~PlaceholderFilterInput() override;
 
  // |FilterInput|
  Variant GetInput() const override;
 
  // |FilterInput|
  std::optional<Snapshot> GetSnapshot(const std::string& label,
                                      const ContentContext& renderer,
                                      const Entity& entity,
                                      std::optional<Rect> coverage_limit,
                                      int32_t mip_count = 1) const override;
 
  // |FilterInput|
  std::optional<Rect> GetCoverage(const Entity& entity) const override;
 
  // |FilterInput|
  void PopulateGlyphAtlas(
      const std::shared_ptr<LazyGlyphAtlas>& lazy_glyph_atlas,
      Scalar scale) override;
 
 private:
  Rect coverage_rect_;
 
  friend FilterInput;
};
 
}  // namespace impeller
 
#endif  // FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_INPUTS_PLACEHOLDER_FILTER_INPUT_H_