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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 <vector>
9
10 #include "impeller/entity/contents/color_source_contents.h"
11 #include "impeller/entity/entity.h"
12 #include "impeller/geometry/color.h"
13 #include "impeller/geometry/point.h"
14
15 namespace impeller {
16
17 class RadialGradientContents final : public ColorSourceContents {
18 public:
19 RadialGradientContents();
20
21 ~RadialGradientContents() override;
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 Point center_;
56 Scalar radius_;
57 std::vector<Color> colors_;
58 std::vector<Scalar> stops_;
59 Entity::TileMode tile_mode_;
60 Color decal_border_color_ = Color::BlackTransparent();
61
62 RadialGradientContents(const RadialGradientContents&) = delete;
63
64 RadialGradientContents& operator=(const RadialGradientContents&) = delete;
65 };
66
67 } // namespace impeller
68
69 #endif // FLUTTER_IMPELLER_ENTITY_CONTENTS_RADIAL_GRADIENT_CONTENTS_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:123
impeller::RadialGradientContents::~RadialGradientContents
~RadialGradientContents() override
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:20
color_source_contents.h
transform
Matrix transform
Definition: gaussian_blur_filter_contents.cc:213
impeller::Contents::ColorFilterProc
std::function< Color(Color)> ColorFilterProc
Definition: contents.h:35
impeller::RadialGradientContents::GetColors
const std::vector< Color > & GetColors() const
Definition: radial_gradient_contents.cc:38
impeller::Entity::TileMode
TileMode
Definition: entity.h:42
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:163
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:33
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:269
color.h
impeller::ColorSourceContents
Definition: color_source_contents.h:37
impeller::RadialGradientContents
Definition: radial_gradient_contents.h:17
impeller::RadialGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: radial_gradient_contents.cc:30
impeller
Definition: allocation.cc:12
impeller::RadialGradientContents::IsOpaque
bool IsOpaque(const Matrix &transform) 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
impeller::ContentContext
Definition: content_context.h:366
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37