| Flutter Impeller |

solid_color_contents.cc
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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 #include "solid_color_contents.h"
6
7 #include "impeller/entity/contents/content_context.h"
8 #include "impeller/entity/entity.h"
9 #include "impeller/entity/geometry/geometry.h"
10 #include "impeller/geometry/path.h"
11 #include "impeller/renderer/render_pass.h"
12
13 namespace impeller {
14
15 SolidColorContents::SolidColorContents() = default;
16
17 SolidColorContents::~SolidColorContents() = default;
18
19 void SolidColorContents::SetColor(Color color) {
20 color_ = color;
21 }
22
23 Color SolidColorContents::GetColor() const {
24 return color_.WithAlpha(color_.alpha * GetOpacityFactor());
25 }
26
27 bool SolidColorContents::IsSolidColor() const {
28 return true;
29 }
30
31 bool SolidColorContents::IsOpaque() const {
32 return GetColor().IsOpaque();
33 }
34
35 std::optional<Rect> SolidColorContents::GetCoverage(
36 const Entity& entity) const {
37 if (GetColor().IsTransparent()) {
38 return std::nullopt;
39 }
40
41 const std::shared_ptr<Geometry>& geometry = GetGeometry();
42 if (geometry == nullptr) {
43 return std::nullopt;
44 }
45 return geometry->GetCoverage(entity.GetTransform());
46 };
47
48 bool SolidColorContents::Render(const ContentContext& renderer,
49 const Entity& entity,
50 RenderPass& pass) const {
51 auto capture = entity.GetCapture().CreateChild("SolidColorContents");
52 using VS = SolidFillPipeline::VertexShader;
53
54 VS::FrameInfo frame_info;
55 frame_info.color = capture.AddColor("Color", GetColor()).Premultiply();
56
57 PipelineBuilderCallback pipeline_callback =
58 [&renderer](ContentContextOptions options) {
59 return renderer.GetSolidFillPipeline(options);
60 };
61 return ColorSourceContents::DrawGeometry<VS>(
62 renderer, entity, pass, pipeline_callback, frame_info,
63 [](RenderPass& pass) {
64 pass.SetCommandLabel("Solid Fill");
65 return true;
66 });
67 }
68
69 std::unique_ptr<SolidColorContents> SolidColorContents::Make(const Path& path,
70 Color color) {
71 auto contents = std::make_unique<SolidColorContents>();
72 contents->SetGeometry(Geometry::MakeFillPath(path));
73 contents->SetColor(color);
74 return contents;
75 }
76
77 std::optional<Color> SolidColorContents::AsBackgroundColor(
78 const Entity& entity,
79 ISize target_size) const {
80 Rect target_rect = Rect::MakeSize(target_size);
81 return GetGeometry()->CoversArea(entity.GetTransform(), target_rect)
82 ? GetColor()
83 : std::optional<Color>();
84 }
85
86 bool SolidColorContents::ApplyColorFilter(
87 const ColorFilterProc& color_filter_proc) {
88 color_ = color_filter_proc(color_);
89 return true;
90 }
91
92 } // namespace impeller
impeller::SolidColorContents::GetColor
Color GetColor() const
Definition: solid_color_contents.cc:23
impeller::SolidColorContents::Make
static std::unique_ptr< SolidColorContents > Make(const Path &path, Color color)
Definition: solid_color_contents.cc:69
path.h
impeller::ColorSourceContents::PipelineBuilderCallback
std::function< std::shared_ptr< Pipeline< PipelineDescriptor > >(ContentContextOptions)> PipelineBuilderCallback
Definition: color_source_contents.h:113
impeller::ColorSourceContents::GetOpacityFactor
Scalar GetOpacityFactor() const
Get the opacity factor for this color source.
Definition: color_source_contents.cc:28
impeller::SolidColorContents::IsOpaque
bool IsOpaque() const override
Whether this Contents only emits opaque source colors from the fragment stage. This value does not ac...
Definition: solid_color_contents.cc:31
impeller::Entity::GetCapture
Capture & GetCapture() const
Definition: entity.cc:206
impeller::Entity::GetTransform
const Matrix & GetTransform() const
Get the global transform matrix for this Entity.
Definition: entity.cc:49
entity.h
solid_color_contents.h
impeller::Color
Definition: color.h:124
impeller::SolidColorContents::IsSolidColor
bool IsSolidColor() const override
Definition: solid_color_contents.cc:27
impeller::SolidColorContents::GetCoverage
std::optional< Rect > GetCoverage(const Entity &entity) const override
Get the area of the render pass that will be affected when this contents is rendered.
Definition: solid_color_contents.cc:35
impeller::Color::alpha
Scalar alpha
Definition: color.h:143
impeller::ColorSourceContents::GetGeometry
const std::shared_ptr< Geometry > & GetGeometry() const
Get the geometry that this contents will use to render.
Definition: color_source_contents.cc:20
impeller::SolidColorContents::~SolidColorContents
~SolidColorContents() override
impeller::RenderPass::SetCommandLabel
virtual void SetCommandLabel(std::string_view label)
The debugging label to use for the command.
Definition: render_pass.cc:97
impeller::VS
SolidFillVertexShader VS
Definition: stroke_path_geometry.cc:15
impeller::Entity
Definition: entity.h:21
impeller::Geometry::MakeFillPath
static std::shared_ptr< Geometry > MakeFillPath(const Path &path, std::optional< Rect > inner_rect=std::nullopt)
Definition: geometry.cc:175
impeller::TSize< int64_t >
render_pass.h
impeller::SolidColorContents::ApplyColorFilter
bool ApplyColorFilter(const ColorFilterProc &color_filter_proc) override
If possible, applies a color filter to this contents inputs on the CPU.
Definition: solid_color_contents.cc:86
impeller::Path
Paths are lightweight objects that describe a collection of linear, quadratic, or cubic segments....
Definition: path.h:51
impeller::Contents::ColorFilterProc
std::function< Color(Color)> ColorFilterProc
Definition: contents.h:38
impeller::Color::WithAlpha
constexpr Color WithAlpha(Scalar new_alpha) const
Definition: color.h:270
geometry.h
impeller::ContentContext::GetSolidFillPipeline
std::shared_ptr< Pipeline< PipelineDescriptor > > GetSolidFillPipeline(ContentContextOptions opts) const
Definition: content_context.h:475
impeller::SolidColorContents::SolidColorContents
SolidColorContents()
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition: render_pass.h:33
content_context.h
impeller::TRect< Scalar >::MakeSize
constexpr static TRect MakeSize(const TSize< U > &size)
Definition: rect.h:146
impeller::SolidColorContents::SetColor
void SetColor(Color color)
Definition: solid_color_contents.cc:19
impeller::Capture::CreateChild
Capture CreateChild(std::string_view label)
Definition: capture.h:239
impeller::SolidColorContents::Render
bool Render(const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override
Definition: solid_color_contents.cc:48
impeller::Color::IsOpaque
constexpr bool IsOpaque() const
Definition: color.h:886
impeller::RenderPipelineT::VertexShader
VertexShader_ VertexShader
Definition: pipeline.h:93
impeller::ContentContextOptions
Definition: content_context.h:288
impeller
Definition: aiks_blur_unittests.cc:20
impeller::ContentContext
Definition: content_context.h:392
impeller::TRect< Scalar >
impeller::SolidColorContents::AsBackgroundColor
std::optional< Color > AsBackgroundColor(const Entity &entity, ISize target_size) const override
Returns a color if this Contents will flood the given target_size with a color. This output color is ...
Definition: solid_color_contents.cc:77