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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 <functional>
9 #include <memory>
10 #include <vector>
11
12 #include "flutter/fml/macros.h"
13 #include "impeller/entity/contents/color_source_contents.h"
14 #include "impeller/entity/entity.h"
15 #include "impeller/geometry/color.h"
16 #include "impeller/geometry/gradient.h"
17 #include "impeller/geometry/path.h"
18 #include "impeller/geometry/point.h"
19
20 namespace impeller {
21
22 class RadialGradientContents final : public ColorSourceContents {
23 public:
24 RadialGradientContents();
25
26 ~RadialGradientContents() override;
27
28 // |Contents|
29 bool IsOpaque() const override;
30
31 // |Contents|
32 bool Render(const ContentContext& renderer,
33 const Entity& entity,
34 RenderPass& pass) const override;
35
36 // |Contents|
37 [[nodiscard]] bool ApplyColorFilter(
38 const ColorFilterProc& color_filter_proc) override;
39
40 void SetCenterAndRadius(Point center, Scalar radius);
41
42 void SetColors(std::vector<Color> colors);
43
44 void SetStops(std::vector<Scalar> stops);
45
46 const std::vector<Color>& GetColors() const;
47
48 const std::vector<Scalar>& GetStops() const;
49
50 void SetTileMode(Entity::TileMode tile_mode);
51
52 private:
53 bool RenderTexture(const ContentContext& renderer,
54 const Entity& entity,
55 RenderPass& pass) const;
56
57 bool RenderSSBO(const ContentContext& renderer,
58 const Entity& entity,
59 RenderPass& pass) const;
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
67 RadialGradientContents(const RadialGradientContents&) = delete;
68
69 RadialGradientContents& operator=(const RadialGradientContents&) = delete;
70 };
71
72 } // namespace impeller
73
74 #endif // FLUTTER_IMPELLER_ENTITY_CONTENTS_RADIAL_GRADIENT_CONTENTS_H_
path.h
impeller::RadialGradientContents::SetCenterAndRadius
void SetCenterAndRadius(Point center, Scalar radius)
Definition: radial_gradient_contents.cc:21
point.h
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::RadialGradientContents::SetStops
void SetStops(std::vector< Scalar > stops)
Definition: radial_gradient_contents.cc:34
entity.h
impeller::RadialGradientContents::GetStops
const std::vector< Scalar > & GetStops() const
Definition: radial_gradient_contents.cc:42
impeller::Color
Definition: color.h:124
impeller::RadialGradientContents::~RadialGradientContents
~RadialGradientContents() override
impeller::RadialGradientContents::IsOpaque
bool IsOpaque() const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: radial_gradient_contents.cc:46
gradient.h
impeller::RadialGradientContents::Render
bool Render(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
Definition: radial_gradient_contents.cc:58
impeller::Entity
Definition: entity.h:21
color_source_contents.h
impeller::Contents::ColorFilterProc
std::function< Color(Color)> ColorFilterProc
Definition: contents.h:38
impeller::RadialGradientContents::GetColors
const std::vector< Color > & GetColors() const
Definition: radial_gradient_contents.cc:38
impeller::Entity::TileMode
TileMode
Definition: entity.h:40
impeller::RadialGradientContents::RadialGradientContents
RadialGradientContents()
impeller::RadialGradientContents::ApplyColorFilter
bool ApplyColorFilter(const ColorFilterProc &color_filter_proc) override
If possible, applies a color filter to this contents inputs on the CPU.
Definition: radial_gradient_contents.cc:187
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:29
impeller::RadialGradientContents::SetTileMode
void SetTileMode(Entity::TileMode tile_mode)
Definition: radial_gradient_contents.cc:26
impeller::TPoint< Scalar >
impeller::Color::BlackTransparent
static constexpr Color BlackTransparent()
Definition: color.h:262
color.h
impeller::ColorSourceContents
Definition: color_source_contents.h:34
impeller::RadialGradientContents
Definition: radial_gradient_contents.h:22
impeller::RadialGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: radial_gradient_contents.cc:30
impeller
Definition: aiks_context.cc:10
impeller::ContentContext
Definition: content_context.h:332