| 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 #pragma once
6
7 #include <functional>
8 #include <memory>
9 #include <vector>
10
11 #include "flutter/fml/macros.h"
12 #include "impeller/entity/contents/color_source_contents.h"
13 #include "impeller/entity/entity.h"
14 #include "impeller/geometry/color.h"
15 #include "impeller/geometry/gradient.h"
16 #include "impeller/geometry/path.h"
17 #include "impeller/geometry/point.h"
18
19 namespace impeller {
20
21 class RadialGradientContents final : public ColorSourceContents {
22 public:
23 RadialGradientContents();
24
25 ~RadialGradientContents() override;
26
27 // |Contents|
28 bool IsOpaque() const override;
29
30 // |Contents|
31 bool Render(const ContentContext& renderer,
32 const Entity& entity,
33 RenderPass& pass) const override;
34
35 // |Contents|
36 [[nodiscard]] bool ApplyColorFilter(
37 const ColorFilterProc& color_filter_proc) override;
38
39 void SetCenterAndRadius(Point center, Scalar radius);
40
41 void SetColors(std::vector<Color> colors);
42
43 void SetStops(std::vector<Scalar> stops);
44
45 const std::vector<Color>& GetColors() const;
46
47 const std::vector<Scalar>& GetStops() const;
48
49 void SetTileMode(Entity::TileMode tile_mode);
50
51 void SetDither(bool dither);
52
53 private:
54 bool RenderTexture(const ContentContext& renderer,
55 const Entity& entity,
56 RenderPass& pass) const;
57
58 bool RenderSSBO(const ContentContext& renderer,
59 const Entity& entity,
60 RenderPass& pass) const;
61 Point center_;
62 Scalar radius_;
63 std::vector<Color> colors_;
64 std::vector<Scalar> stops_;
65 Entity::TileMode tile_mode_;
66 Color decal_border_color_ = Color::BlackTransparent();
67 bool dither_ = false;
68
69 FML_DISALLOW_COPY_AND_ASSIGN(RadialGradientContents);
70 };
71
72 } // namespace impeller
path.h
impeller::RadialGradientContents::SetCenterAndRadius
void SetCenterAndRadius(Point center, Scalar radius)
Definition: radial_gradient_contents.cc:23
point.h
impeller::Scalar
float Scalar
Definition: scalar.h:15
impeller::RadialGradientContents::SetStops
void SetStops(std::vector< Scalar > stops)
Definition: radial_gradient_contents.cc:40
entity.h
impeller::RadialGradientContents::GetStops
const std::vector< Scalar > & GetStops() const
Definition: radial_gradient_contents.cc:48
impeller::Color
Definition: color.h:122
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:52
gradient.h
impeller::RadialGradientContents::Render
bool Render(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
Definition: radial_gradient_contents.cc:64
impeller::Entity
Definition: entity.h:21
color_source_contents.h
impeller::Contents::ColorFilterProc
std::function< Color(Color)> ColorFilterProc
Definition: contents.h:37
impeller::RadialGradientContents::SetDither
void SetDither(bool dither)
Definition: radial_gradient_contents.cc:32
impeller::RadialGradientContents::GetColors
const std::vector< Color > & GetColors() const
Definition: radial_gradient_contents.cc:44
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:195
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:27
impeller::RadialGradientContents::SetTileMode
void SetTileMode(Entity::TileMode tile_mode)
Definition: radial_gradient_contents.cc:28
impeller::TPoint< Scalar >
impeller::Color::BlackTransparent
static constexpr Color BlackTransparent()
Definition: color.h:260
color.h
impeller::ColorSourceContents
Definition: color_source_contents.h:33
impeller::RadialGradientContents
Definition: radial_gradient_contents.h:21
impeller::RadialGradientContents::SetColors
void SetColors(std::vector< Color > colors)
Definition: radial_gradient_contents.cc:36
impeller
Definition: aiks_context.cc:10
impeller::ContentContext
Definition: content_context.h:344