#include <text_contents.h>
Public Member Functions | |
TextContents () | |
~TextContents () | |
void | SetTextFrame (const std::shared_ptr< TextFrame > &frame) |
void | SetColor (Color color) |
void | SetForceTextColor (bool value) |
Force the text color to apply to the rendered glyphs, even if those glyphs are bitmaps. More... | |
void | SetTextProperties (Color color, const std::optional< StrokeParameters > &stroke) |
Must be set after text frame. More... | |
Color | GetColor () const |
void | SetInheritedOpacity (Scalar opacity) override |
Inherit the provided opacity. More... | |
void | SetOffset (Vector2 offset) |
std::optional< Rect > | GetTextFrameBounds () const |
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. More... | |
void | SetScale (Scalar scale) |
bool | Render (const ContentContext &renderer, const Entity &entity, RenderPass &pass) const override |
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Contents () | |
virtual | ~Contents () |
void | SetCoverageHint (std::optional< Rect > coverage_hint) |
Hint that specifies the coverage area of this Contents that will actually be used during rendering. This is for optimization purposes only and can not be relied on as a clip. May optionally affect the result of GetCoverage() . More... | |
const std::optional< Rect > & | GetCoverageHint () const |
virtual bool | IsOpaque (const Matrix &transform) const |
Whether this Contents only emits opaque source colors from the fragment stage. This value does not account for any entity properties (e.g. the blend mode), clips/visibility culling, or inherited opacity. More... | |
virtual std::optional< Snapshot > | RenderToSnapshot (const ContentContext &renderer, const Entity &entity, std::optional< Rect > coverage_limit=std::nullopt, const std::optional< SamplerDescriptor > &sampler_descriptor=std::nullopt, bool msaa_enabled=true, int32_t mip_count=1, std::string_view label="Snapshot") const |
Render this contents to a snapshot, respecting the entity's transform, path, clip depth, and blend mode. The result texture size is always the size of GetCoverage(entity) . More... | |
std::optional< Size > | GetColorSourceSize () const |
Return the color source's intrinsic size, if available. More... | |
void | SetColorSourceSize (Size size) |
virtual std::optional< Color > | AsBackgroundColor (const Entity &entity, ISize target_size) const |
Returns a color if this Contents will flood the given target_size with a color. This output color is the "Source" color that will be used for the Entity's blend operation. More... | |
virtual bool | ApplyColorFilter (const ColorFilterProc &color_filter_proc) |
If possible, applies a color filter to this contents inputs on the CPU. More... | |
Static Public Member Functions | |
static void | ComputeVertexData (GlyphAtlasPipeline::VertexShader::PerVertexData *vtx_contents, const std::shared_ptr< TextFrame > &frame, Scalar scale, const Matrix &entity_transform, Vector2 offset, std::optional< GlyphProperties > glyph_properties, const std::shared_ptr< GlyphAtlas > &atlas) |
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static std::shared_ptr< Contents > | MakeAnonymous (RenderProc render_proc, CoverageProc coverage_proc) |
Additional Inherited Members | |
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using | ColorFilterProc = std::function< Color(Color)> |
using | RenderProc = std::function< bool(const ContentContext &renderer, const Entity &entity, RenderPass &pass)> |
using | CoverageProc = std::function< std::optional< Rect >(const Entity &entity)> |
Definition at line 23 of file text_contents.h.
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default |
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default |
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static |
Definition at line 87 of file text_contents.cc.
References impeller::FrameBounds::atlas_bounds, impeller::Matrix::Basis(), impeller::TextFrame::ComputeSubpixelPosition(), impeller::FontGlyphAtlas::FindGlyphBounds(), impeller::Font::GetAxisAlignment(), impeller::TRect< T >::GetLeftTop(), impeller::TRect< T >::GetSize(), impeller::SubpixelGlyph::glyph, impeller::FrameBounds::glyph_bounds, impeller::Rational::Invert(), impeller::FrameBounds::is_placeholder, impeller::Matrix::IsTranslationScaleOnly(), impeller::kAll, impeller::kNone, impeller::kX, impeller::kY, impeller::Matrix::m, impeller::Matrix::MakeScale(), impeller::TPoint< T >::Round(), impeller::TRect< T >::Scale(), impeller::SizeToPoint(), transform, VALIDATION_LOG, impeller::TPoint< T >::x, and impeller::TPoint< T >::y.
Referenced by Render(), and impeller::testing::TEST_P().
Color impeller::TextContents::GetColor | ( | ) | const |
Definition at line 40 of file text_contents.cc.
References impeller::Color::alpha, and impeller::Color::WithAlpha().
Referenced by Render().
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overridevirtual |
Get the area of the render pass that will be affected when this contents is rendered.
During rendering, coverage coordinates count pixels from the top left corner of the framebuffer.
std::nullopt
result means that rendering this contents has no effect on the output color. Implements impeller::Contents.
Definition at line 56 of file text_contents.cc.
References impeller::Entity::GetTransform().
std::optional<Rect> impeller::TextContents::GetTextFrameBounds | ( | ) | const |
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overridevirtual |
Implements impeller::Contents.
Definition at line 220 of file text_contents.cc.
References buffer_view, ComputeVertexData(), data, impeller::RenderPass::Draw(), impeller::HostBuffer::Emplace(), impeller::HostBuffer::EmplaceUniform(), GetColor(), impeller::ContentContext::GetContext(), impeller::ContentContext::GetGlyphAtlasPipeline(), impeller::ContentContext::GetLazyGlyphAtlas(), impeller::Entity::GetShaderClipDepth(), impeller::Entity::GetShaderTransform(), impeller::Entity::GetTransform(), impeller::ContentContext::GetTransientsBuffer(), impeller::Matrix::IsTranslationScaleOnly(), impeller::Color::IsTransparent(), impeller::k16bit, impeller::kBase, impeller::GlyphAtlas::kColorBitmap, impeller::kLinear, impeller::kNearest, impeller::kTriangle, impeller::SamplerDescriptor::mag_filter, impeller::SamplerDescriptor::min_filter, impeller::SamplerDescriptor::mip_filter, impeller::OptionsFromPassAndEntity(), impeller::Color::Premultiply(), impeller::RenderPass::SetCommandLabel(), impeller::RenderPass::SetElementCount(), impeller::RenderPass::SetIndexBuffer(), impeller::RenderPass::SetPipeline(), impeller::RenderPass::SetVertexBuffer(), impeller::ToVector(), type, and VALIDATION_LOG.
Referenced by impeller::testing::TEST_P().
void impeller::TextContents::SetColor | ( | Color | color | ) |
Definition at line 36 of file text_contents.cc.
Referenced by impeller::testing::TEST_P().
void impeller::TextContents::SetForceTextColor | ( | bool | value | ) |
Force the text color to apply to the rendered glyphs, even if those glyphs are bitmaps.
This is used to ensure that mask blurs work correctly on emoji.
Definition at line 52 of file text_contents.cc.
References value.
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overridevirtual |
Inherit the provided opacity.
Use of this method is invalid if CanAcceptOpacity returns false.
Reimplemented from impeller::Contents.
Definition at line 44 of file text_contents.cc.
void impeller::TextContents::SetOffset | ( | Vector2 | offset | ) |
Definition at line 48 of file text_contents.cc.
Referenced by impeller::testing::TEST_P().
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inline |
Definition at line 56 of file text_contents.h.
Referenced by impeller::testing::TEST_P().
void impeller::TextContents::SetTextFrame | ( | const std::shared_ptr< TextFrame > & | frame | ) |
Definition at line 32 of file text_contents.cc.
Referenced by impeller::testing::TEST_P().
void impeller::TextContents::SetTextProperties | ( | Color | color, |
const std::optional< StrokeParameters > & | stroke | ||
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Must be set after text frame.
Definition at line 60 of file text_contents.cc.
References impeller::GlyphProperties::color, impeller::GlyphProperties::stroke, and impeller::Color::WithAlpha().