Flutter Impeller
filter_contents_filter_input.h
Go to the documentation of this file.
1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_INPUTS_FILTER_CONTENTS_FILTER_INPUT_H_
6 #define FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_INPUTS_FILTER_CONTENTS_FILTER_INPUT_H_
7 
9 
10 namespace impeller {
11 
12 class FilterContentsFilterInput final : public FilterInput {
13  public:
15 
16  // |FilterInput|
17  std::optional<Snapshot> GetSnapshot(std::string_view label,
18  const ContentContext& renderer,
19  const Entity& entity,
20  std::optional<Rect> coverage_limit,
21  int32_t mip_count) const override;
22 
23  // |FilterInput|
24  std::optional<Rect> GetCoverage(const Entity& entity) const override;
25 
26  // |FilterInput|
27  std::optional<Rect> GetSourceCoverage(
28  const Matrix& effect_transform,
29  const Rect& output_limit) const override;
30 
31  // |FilterInput|
32  Matrix GetLocalTransform(const Entity& entity) const override;
33 
34  // |FilterInput|
35  Matrix GetTransform(const Entity& entity) const override;
36 
37  // |FilterInput|
38  virtual void SetEffectTransform(const Matrix& matrix) override;
39 
40  // |FilterInput|
41  virtual void SetRenderingMode(Entity::RenderingMode rendering_mode) override;
42 
43  private:
44  explicit FilterContentsFilterInput(std::shared_ptr<FilterContents> filter);
45 
46  std::shared_ptr<FilterContents> filter_;
47  mutable std::optional<Snapshot> snapshot_;
48 
49  friend FilterInput;
50 };
51 
52 } // namespace impeller
53 
54 #endif // FLUTTER_IMPELLER_ENTITY_CONTENTS_FILTERS_INPUTS_FILTER_CONTENTS_FILTER_INPUT_H_
std::optional< Snapshot > GetSnapshot(std::string_view label, const ContentContext &renderer, const Entity &entity, std::optional< Rect > coverage_limit, int32_t mip_count) const override
virtual void SetRenderingMode(Entity::RenderingMode rendering_mode) override
Turns on subpass mode for filter inputs.
Matrix GetLocalTransform(const Entity &entity) const override
Get the local transform of this filter input. This transform is relative to the Entity transform spac...
Matrix GetTransform(const Entity &entity) const override
Get the transform of this FilterInput. This is equivalent to calling entity.GetTransform() * GetLocal...
std::optional< Rect > GetSourceCoverage(const Matrix &effect_transform, const Rect &output_limit) const override
virtual void SetEffectTransform(const Matrix &matrix) override
Sets the effect transform of filter inputs.
std::optional< Rect > GetCoverage(const Entity &entity) const override
A 4x4 matrix using column-major storage.
Definition: matrix.h:37