Flutter Impeller
radial_gradient_contents.h
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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_RADIAL_GRADIENT_CONTENTS_H_
6 #define FLUTTER_IMPELLER_ENTITY_CONTENTS_RADIAL_GRADIENT_CONTENTS_H_
7 
8 #include <vector>
9 
11 #include "impeller/entity/entity.h"
14 
15 namespace impeller {
16 
18  public:
20 
22 
23  // |Contents|
24  bool IsOpaque(const Matrix& transform) const override;
25 
26  // |Contents|
27  bool Render(const ContentContext& renderer,
28  const Entity& entity,
29  RenderPass& pass) const override;
30 
31  // |Contents|
32  [[nodiscard]] bool ApplyColorFilter(
33  const ColorFilterProc& color_filter_proc) override;
34 
35  void SetCenterAndRadius(Point center, Scalar radius);
36 
37  void SetColors(std::vector<Color> colors);
38 
39  void SetStops(std::vector<Scalar> stops);
40 
41  const std::vector<Color>& GetColors() const;
42 
43  const std::vector<Scalar>& GetStops() const;
44 
45  void SetTileMode(Entity::TileMode tile_mode);
46 
47  private:
48  bool RenderTexture(const ContentContext& renderer,
49  const Entity& entity,
50  RenderPass& pass) const;
51 
52  bool RenderSSBO(const ContentContext& renderer,
53  const Entity& entity,
54  RenderPass& pass) const;
55 
56  bool RenderUniform(const ContentContext& renderer,
57  const Entity& entity,
58  RenderPass& pass) const;
59 
60  Point center_;
61  Scalar radius_;
62  std::vector<Color> colors_;
63  std::vector<Scalar> stops_;
64  Entity::TileMode tile_mode_;
65  Color decal_border_color_ = Color::BlackTransparent();
66 
68 
69  RadialGradientContents& operator=(const RadialGradientContents&) = delete;
70 };
71 
72 } // namespace impeller
73 
74 #endif // FLUTTER_IMPELLER_ENTITY_CONTENTS_RADIAL_GRADIENT_CONTENTS_H_
std::function< Color(Color)> ColorFilterProc
Definition: contents.h:35
bool IsOpaque(const Matrix &transform) const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
void SetTileMode(Entity::TileMode tile_mode)
bool Render(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
void SetCenterAndRadius(Point center, Scalar radius)
void SetStops(std::vector< Scalar > stops)
bool ApplyColorFilter(const ColorFilterProc &color_filter_proc) override
If possible, applies a color filter to this contents inputs on the CPU.
void SetColors(std::vector< Color > colors)
const std::vector< Scalar > & GetStops() const
const std::vector< Color > & GetColors() const
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:30
float Scalar
Definition: scalar.h:19
static constexpr Color BlackTransparent()
Definition: color.h:270
A 4x4 matrix using column-major storage.
Definition: matrix.h:37