| Flutter Impeller |

color_source.cc
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 #include "impeller/aiks/color_source.h"
6
7 #include <memory>
8 #include <vector>
9
10 #include "impeller/aiks/paint.h"
11 #include "impeller/core/sampler_descriptor.h"
12 #include "impeller/entity/contents/conical_gradient_contents.h"
13 #include "impeller/entity/contents/filters/color_filter_contents.h"
14 #include "impeller/entity/contents/linear_gradient_contents.h"
15 #include "impeller/entity/contents/radial_gradient_contents.h"
16 #include "impeller/entity/contents/runtime_effect_contents.h"
17 #include "impeller/entity/contents/solid_color_contents.h"
18 #include "impeller/entity/contents/sweep_gradient_contents.h"
19 #include "impeller/entity/contents/tiled_texture_contents.h"
20 #include "impeller/geometry/color.h"
21 #include "impeller/geometry/matrix.h"
22 #include "impeller/geometry/scalar.h"
23 #include "impeller/runtime_stage/runtime_stage.h"
24
25 #if IMPELLER_ENABLE_3D
26 #include "impeller/entity/contents/scene_contents.h" // nogncheck
27 #include "impeller/scene/node.h" // nogncheck
28 #endif // IMPELLER_ENABLE_3D
29
30 namespace impeller {
31
32 ColorSource::ColorSource() noexcept
33 : proc_([](const Paint& paint) -> std::shared_ptr<ColorSourceContents> {
34 auto contents = std::make_shared<SolidColorContents>();
35 contents->SetColor(paint.color);
36 return contents;
37 }){};
38
39 ColorSource::~ColorSource() = default;
40
41 ColorSource ColorSource::MakeColor() {
42 return {};
43 }
44
45 ColorSource ColorSource::MakeLinearGradient(Point start_point,
46 Point end_point,
47 std::vector<Color> colors,
48 std::vector<Scalar> stops,
49 Entity::TileMode tile_mode,
50 Matrix effect_transform) {
51 ColorSource result;
52 result.type_ = Type::kLinearGradient;
53 result.proc_ = [start_point, end_point, colors = std::move(colors),
54 stops = std::move(stops), tile_mode,
55 effect_transform](const Paint& paint) {
56 auto contents = std::make_shared<LinearGradientContents>();
57 contents->SetOpacityFactor(paint.color.alpha);
58 contents->SetColors(colors);
59 contents->SetStops(stops);
60 contents->SetEndPoints(start_point, end_point);
61 contents->SetTileMode(tile_mode);
62 contents->SetEffectTransform(effect_transform);
63
64 std::vector<Point> bounds{start_point, end_point};
65 auto intrinsic_size = Rect::MakePointBounds(bounds.begin(), bounds.end());
66 if (intrinsic_size.has_value()) {
67 contents->SetColorSourceSize(intrinsic_size->GetSize());
68 }
69 return contents;
70 };
71 return result;
72 }
73
74 ColorSource ColorSource::MakeConicalGradient(Point center,
75 Scalar radius,
76 std::vector<Color> colors,
77 std::vector<Scalar> stops,
78 Point focus_center,
79 Scalar focus_radius,
80 Entity::TileMode tile_mode,
81 Matrix effect_transform) {
82 ColorSource result;
83 result.type_ = Type::kConicalGradient;
84 result.proc_ = [center, radius, colors = std::move(colors),
85 stops = std::move(stops), focus_center, focus_radius,
86 tile_mode, effect_transform](const Paint& paint) {
87 std::shared_ptr<ConicalGradientContents> contents =
88 std::make_shared<ConicalGradientContents>();
89 contents->SetOpacityFactor(paint.color.alpha);
90 contents->SetColors(colors);
91 contents->SetStops(stops);
92 contents->SetCenterAndRadius(center, radius);
93 contents->SetTileMode(tile_mode);
94 contents->SetEffectTransform(effect_transform);
95 contents->SetFocus(focus_center, focus_radius);
96
97 auto radius_pt = Point(radius, radius);
98 std::vector<Point> bounds{center + radius_pt, center - radius_pt};
99 auto intrinsic_size = Rect::MakePointBounds(bounds.begin(), bounds.end());
100 if (intrinsic_size.has_value()) {
101 contents->SetColorSourceSize(intrinsic_size->GetSize());
102 }
103 return contents;
104 };
105 return result;
106 }
107
108 ColorSource ColorSource::MakeRadialGradient(Point center,
109 Scalar radius,
110 std::vector<Color> colors,
111 std::vector<Scalar> stops,
112 Entity::TileMode tile_mode,
113 Matrix effect_transform) {
114 ColorSource result;
115 result.type_ = Type::kRadialGradient;
116 result.proc_ = [center, radius, colors = std::move(colors),
117 stops = std::move(stops), tile_mode,
118 effect_transform](const Paint& paint) {
119 auto contents = std::make_shared<RadialGradientContents>();
120 contents->SetOpacityFactor(paint.color.alpha);
121 contents->SetColors(colors);
122 contents->SetStops(stops);
123 contents->SetCenterAndRadius(center, radius);
124 contents->SetTileMode(tile_mode);
125 contents->SetEffectTransform(effect_transform);
126
127 auto radius_pt = Point(radius, radius);
128 std::vector<Point> bounds{center + radius_pt, center - radius_pt};
129 auto intrinsic_size = Rect::MakePointBounds(bounds.begin(), bounds.end());
130 if (intrinsic_size.has_value()) {
131 contents->SetColorSourceSize(intrinsic_size->GetSize());
132 }
133 return contents;
134 };
135 return result;
136 }
137
138 ColorSource ColorSource::MakeSweepGradient(Point center,
139 Degrees start_angle,
140 Degrees end_angle,
141 std::vector<Color> colors,
142 std::vector<Scalar> stops,
143 Entity::TileMode tile_mode,
144 Matrix effect_transform) {
145 ColorSource result;
146 result.type_ = Type::kSweepGradient;
147 result.proc_ = [center, start_angle, end_angle, colors = std::move(colors),
148 stops = std::move(stops), tile_mode,
149 effect_transform](const Paint& paint) {
150 auto contents = std::make_shared<SweepGradientContents>();
151 contents->SetOpacityFactor(paint.color.alpha);
152 contents->SetCenterAndAngles(center, start_angle, end_angle);
153 contents->SetColors(colors);
154 contents->SetStops(stops);
155 contents->SetTileMode(tile_mode);
156 contents->SetEffectTransform(effect_transform);
157
158 return contents;
159 };
160 return result;
161 }
162
163 ColorSource ColorSource::MakeImage(std::shared_ptr<Texture> texture,
164 Entity::TileMode x_tile_mode,
165 Entity::TileMode y_tile_mode,
166 SamplerDescriptor sampler_descriptor,
167 Matrix effect_transform) {
168 ColorSource result;
169 result.type_ = Type::kImage;
170 result.proc_ = [texture = std::move(texture), x_tile_mode, y_tile_mode,
171 sampler_descriptor = std::move(sampler_descriptor),
172 effect_transform](const Paint& paint) {
173 auto contents = std::make_shared<TiledTextureContents>();
174 contents->SetOpacityFactor(paint.color.alpha);
175 contents->SetTexture(texture);
176 contents->SetTileModes(x_tile_mode, y_tile_mode);
177 contents->SetSamplerDescriptor(sampler_descriptor);
178 contents->SetEffectTransform(effect_transform);
179 if (paint.color_filter) {
180 TiledTextureContents::ColorFilterProc filter_proc =
181 [color_filter = paint.color_filter](FilterInput::Ref input) {
182 return color_filter->WrapWithGPUColorFilter(
183 std::move(input), ColorFilterContents::AbsorbOpacity::kNo);
184 };
185 contents->SetColorFilter(filter_proc);
186 }
187 contents->SetColorSourceSize(Size::Ceil(texture->GetSize()));
188 return contents;
189 };
190 return result;
191 }
192
193 ColorSource ColorSource::MakeRuntimeEffect(
194 std::shared_ptr<RuntimeStage> runtime_stage,
195 std::shared_ptr<std::vector<uint8_t>> uniform_data,
196 std::vector<RuntimeEffectContents::TextureInput> texture_inputs) {
197 ColorSource result;
198 result.type_ = Type::kRuntimeEffect;
199 result.proc_ = [runtime_stage = std::move(runtime_stage),
200 uniform_data = std::move(uniform_data),
201 texture_inputs =
202 std::move(texture_inputs)](const Paint& paint) {
203 auto contents = std::make_shared<RuntimeEffectContents>();
204 contents->SetOpacityFactor(paint.color.alpha);
205 contents->SetRuntimeStage(runtime_stage);
206 contents->SetUniformData(uniform_data);
207 contents->SetTextureInputs(texture_inputs);
208 return contents;
209 };
210 return result;
211 }
212
213 #if IMPELLER_ENABLE_3D
214 ColorSource ColorSource::MakeScene(std::shared_ptr<scene::Node> scene_node,
215 Matrix camera_transform) {
216 ColorSource result;
217 result.type_ = Type::kScene;
218 result.proc_ = [scene_node = std::move(scene_node),
219 camera_transform](const Paint& paint) {
220 auto contents = std::make_shared<SceneContents>();
221 contents->SetOpacityFactor(paint.color.alpha);
222 contents->SetNode(scene_node);
223 contents->SetCameraTransform(camera_transform);
224 return contents;
225 };
226 return result;
227 }
228 #endif // IMPELLER_ENABLE_3D
229
230 ColorSource::Type ColorSource::GetType() const {
231 return type_;
232 }
233
234 std::shared_ptr<ColorSourceContents> ColorSource::GetContents(
235 const Paint& paint) const {
236 return proc_(paint);
237 }
238
239 } // namespace impeller
impeller::ColorSource::Type::kScene
@ kScene
impeller::ColorSource::Type::kLinearGradient
@ kLinearGradient
impeller::ColorSource::GetContents
std::shared_ptr< ColorSourceContents > GetContents(const Paint &paint) const
Definition: color_source.cc:234
impeller::Scalar
float Scalar
Definition: scalar.h:18
impeller::ColorSource::Type::kRadialGradient
@ kRadialGradient
impeller::ColorSource::MakeLinearGradient
static ColorSource MakeLinearGradient(Point start_point, Point end_point, std::vector< Color > colors, std::vector< Scalar > stops, Entity::TileMode tile_mode, Matrix effect_transform)
Definition: color_source.cc:45
impeller::Paint
Definition: paint.h:23
solid_color_contents.h
impeller::FilterInput::Ref
std::shared_ptr< FilterInput > Ref
Definition: filter_input.h:32
tiled_texture_contents.h
impeller::TSize< Scalar >::Ceil
constexpr TSize Ceil() const
Definition: size.h:96
impeller::ColorFilterContents::AbsorbOpacity::kNo
@ kNo
impeller::ColorSource::MakeSweepGradient
static ColorSource MakeSweepGradient(Point center, Degrees start_angle, Degrees end_angle, std::vector< Color > colors, std::vector< Scalar > stops, Entity::TileMode tile_mode, Matrix effect_transform)
Definition: color_source.cc:138
impeller::ColorSource::MakeColor
static ColorSource MakeColor()
Definition: color_source.cc:41
impeller::ColorSource::MakeImage
static ColorSource MakeImage(std::shared_ptr< Texture > texture, Entity::TileMode x_tile_mode, Entity::TileMode y_tile_mode, SamplerDescriptor sampler_descriptor, Matrix effect_transform)
Definition: color_source.cc:163
sweep_gradient_contents.h
impeller::TiledTextureContents::ColorFilterProc
std::function< std::shared_ptr< ColorFilterContents >(FilterInput::Ref)> ColorFilterProc
Definition: tiled_texture_contents.h:29
impeller::TRect< Scalar >::MakePointBounds
constexpr static std::optional< TRect > MakePointBounds(const U &value)
Definition: rect.h:151
runtime_effect_contents.h
impeller::SamplerDescriptor
Definition: sampler_descriptor.h:15
matrix.h
impeller::Point
TPoint< Scalar > Point
Definition: point.h:316
impeller::ColorSource
Definition: color_source.h:28
color_source.h
runtime_stage.h
scene_contents.h
node.h
impeller::ColorSource::MakeConicalGradient
static ColorSource MakeConicalGradient(Point center, Scalar radius, std::vector< Color > colors, std::vector< Scalar > stops, Point focus_center, Scalar focus_radius, Entity::TileMode tile_mode, Matrix effect_transform)
Definition: color_source.cc:74
impeller::ColorSource::Type::kRuntimeEffect
@ kRuntimeEffect
conical_gradient_contents.h
impeller::ColorSource::ColorSource
ColorSource() noexcept
Definition: color_source.cc:32
color_filter_contents.h
impeller::Entity::TileMode
TileMode
Definition: entity.h:42
impeller::ColorSource::MakeRadialGradient
static ColorSource MakeRadialGradient(Point center, Scalar radius, std::vector< Color > colors, std::vector< Scalar > stops, Entity::TileMode tile_mode, Matrix effect_transform)
Definition: color_source.cc:108
scalar.h
sampler_descriptor.h
impeller::ColorSource::Type::kImage
@ kImage
impeller::ColorSource::MakeRuntimeEffect
static ColorSource MakeRuntimeEffect(std::shared_ptr< RuntimeStage > runtime_stage, std::shared_ptr< std::vector< uint8_t >> uniform_data, std::vector< RuntimeEffectContents::TextureInput > texture_inputs)
Definition: color_source.cc:193
impeller::ColorSource::Type::kConicalGradient
@ kConicalGradient
std
Definition: comparable.h:95
impeller::ColorSource::Type
Type
Definition: color_source.h:30
impeller::TPoint< Scalar >
impeller::ColorSource::~ColorSource
~ColorSource()
paint.h
impeller::Degrees
Definition: scalar.h:46
color.h
radial_gradient_contents.h
impeller::ColorSourceContents
Definition: color_source_contents.h:36
impeller::ColorSource::Type::kSweepGradient
@ kSweepGradient
impeller
Definition: aiks_blur_unittests.cc:20
impeller::ColorSource::GetType
Type GetType() const
Definition: color_source.cc:230
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition: matrix.h:37
linear_gradient_contents.h