Flutter Impeller
impeller::StrokePathSourceGeometry Class Referenceabstract

An abstract Geometry base class that produces fillable vertices representing the stroked outline from any |PathSource| provided by the subclass. More...

#include <stroke_path_geometry.h>

Inheritance diagram for impeller::StrokePathSourceGeometry:
impeller::StrokeSegmentsGeometry impeller::Geometry impeller::StrokeDashedLineGeometry impeller::StrokeDiffRoundRectGeometry impeller::StrokeEllipseGeometry impeller::StrokePathGeometry impeller::StrokeRoundRectGeometry impeller::StrokeRoundSuperellipseGeometry

Protected Member Functions

 StrokePathSourceGeometry (const StrokeParameters &parameters)
 
virtual const PathSourceGetSource () const =0
 
std::optional< RectGetCoverage (const Matrix &transform) const override
 
void Dispatch (PathAndArcSegmentReceiver &receiver, Tessellator &tessellator, Scalar scale) const override
 
- Protected Member Functions inherited from impeller::StrokeSegmentsGeometry
 StrokeSegmentsGeometry (const StrokeParameters &parameters)
 
std::optional< RectGetStrokeCoverage (const Matrix &transform, const Rect &segment_bounds) const
 

Additional Inherited Members

- Public Member Functions inherited from impeller::StrokeSegmentsGeometry
 ~StrokeSegmentsGeometry () override
 
Scalar GetStrokeWidth () const
 
Scalar GetMiterLimit () const
 
Cap GetStrokeCap () const
 
Join GetStrokeJoin () const
 
Scalar ComputeAlphaCoverage (const Matrix &transform) const override
 
- Public Member Functions inherited from impeller::Geometry
virtual ~Geometry ()
 
virtual bool CoversArea (const Matrix &transform, const Rect &rect) const
 Determines if this geometry, transformed by the given transform, will completely cover all surface area of the given rect. More...
 
virtual bool IsAxisAlignedRect () const
 
virtual bool CanApplyMaskFilter () const
 
- Static Public Member Functions inherited from impeller::Geometry
static std::unique_ptr< GeometryMakeFillPath (const flutter::DlPath &path, std::optional< Rect > inner_rect=std::nullopt)
 
static std::unique_ptr< GeometryMakeStrokePath (const flutter::DlPath &path, const StrokeParameters &stroke={})
 
static std::unique_ptr< GeometryMakeCover ()
 
static std::unique_ptr< GeometryMakeRect (const Rect &rect)
 
static std::unique_ptr< GeometryMakeOval (const Rect &rect)
 
static std::unique_ptr< GeometryMakeLine (const Point &p0, const Point &p1, const StrokeParameters &stroke)
 
static std::unique_ptr< GeometryMakeCircle (const Point &center, Scalar radius)
 
static std::unique_ptr< GeometryMakeStrokedCircle (const Point &center, Scalar radius, Scalar stroke_width)
 
static std::unique_ptr< GeometryMakeFilledArc (const Rect &oval_bounds, Degrees start, Degrees sweep, bool include_center)
 
static std::unique_ptr< GeometryMakeStrokedArc (const Rect &oval_bounds, Degrees start, Degrees sweep, const StrokeParameters &stroke)
 
static std::unique_ptr< GeometryMakeRoundRect (const Rect &rect, const Size &radii)
 
static std::unique_ptr< GeometryMakeRoundSuperellipse (const Rect &rect, Scalar corner_radius)
 
static Scalar ComputeStrokeAlphaCoverage (const Matrix &entity, Scalar stroke_width)
 Compute an alpha value to simulate lower coverage of fractional pixel strokes. More...
 
static GeometryResult ComputePositionGeometry (const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass)
 

Detailed Description

An abstract Geometry base class that produces fillable vertices representing the stroked outline from any |PathSource| provided by the subclass.

Definition at line 94 of file stroke_path_geometry.h.

Constructor & Destructor Documentation

◆ StrokePathSourceGeometry()

impeller::StrokePathSourceGeometry::StrokePathSourceGeometry ( const StrokeParameters parameters)
explicitprotected

Definition at line 839 of file stroke_path_geometry.cc.

841  : StrokeSegmentsGeometry(parameters) {}
StrokeSegmentsGeometry(const StrokeParameters &parameters)

Member Function Documentation

◆ Dispatch()

void impeller::StrokePathSourceGeometry::Dispatch ( PathAndArcSegmentReceiver receiver,
Tessellator tessellator,
Scalar  scale 
) const
overrideprotectedvirtual

Dispatch the path segments to the StrokePathSegmentReceiver for the provided transform scale.

Implements impeller::StrokeSegmentsGeometry.

Definition at line 848 of file stroke_path_geometry.cc.

850  {
852 }
static void PathToStrokedSegments(const PathSource &source, SegmentReceiver &receiver)
virtual const PathSource & GetSource() const =0

References GetSource(), and impeller::PathTessellator::PathToStrokedSegments().

◆ GetCoverage()

std::optional< Rect > impeller::StrokePathSourceGeometry::GetCoverage ( const Matrix transform) const
overrideprotectedvirtual

Implements impeller::Geometry.

Definition at line 843 of file stroke_path_geometry.cc.

844  {
845  return GetStrokeCoverage(transform, GetSource().GetBounds());
846 }
std::optional< Rect > GetStrokeCoverage(const Matrix &transform, const Rect &segment_bounds) const

References GetSource(), impeller::StrokeSegmentsGeometry::GetStrokeCoverage(), and transform.

◆ GetSource()

virtual const PathSource& impeller::StrokePathSourceGeometry::GetSource ( ) const
protectedpure virtual

The documentation for this class was generated from the following files: