Flutter Impeller
Public Member Functions | Protected Member Functions | List of all members
impeller::TypographerContext Class Referenceabstract

The graphics context necessary to render text. More...

#include <typographer_context.h>

Inheritance diagram for impeller::TypographerContext:
impeller::TypographerContextSkia

Public Member Functions

virtual ~TypographerContext ()
 
virtual bool IsValid () const
 
virtual std::shared_ptr< GlyphAtlasContext > CreateGlyphAtlasContext (GlyphAtlas::Type type) const =0
 
virtual std::shared_ptr< GlyphAtlas > CreateGlyphAtlas (Context &context, GlyphAtlas::Type type, HostBuffer &host_buffer, const std::shared_ptr< GlyphAtlasContext > &atlas_context, const std::vector< std::shared_ptr< TextFrame >> &text_frames) const =0
 

Protected Member Functions

 TypographerContext ()
 Create a new context to render text that talks to an underlying graphics context. More...
 

Detailed Description

The graphics context necessary to render text. 

        This is necessary to create and reference resources related to
        rendering text on the GPU.

Definition at line 23 of file typographer_context.h.

Constructor & Destructor Documentation

◆ ~TypographerContext()

impeller::TypographerContext::~TypographerContext ( )
virtualdefault

◆ TypographerContext()

impeller::TypographerContext::TypographerContext ( )
protected

Create a new context to render text that talks to an underlying graphics context.

Definition at line 11 of file typographer_context.cc.

11  {
12  is_valid_ = true;
13 }

Member Function Documentation

◆ CreateGlyphAtlas()

virtual std::shared_ptr<GlyphAtlas> impeller::TypographerContext::CreateGlyphAtlas ( Context &  context,
GlyphAtlas::Type  type,
HostBuffer &  host_buffer,
const std::shared_ptr< GlyphAtlasContext > &  atlas_context,
const std::vector< std::shared_ptr< TextFrame >> &  text_frames 
) const
pure virtual

Implemented in impeller::TypographerContextSkia.

Referenced by impeller::testing::CreateGlyphAtlas().

◆ CreateGlyphAtlasContext()

virtual std::shared_ptr<GlyphAtlasContext> impeller::TypographerContext::CreateGlyphAtlasContext ( GlyphAtlas::Type  type) const
pure virtual

Implemented in impeller::TypographerContextSkia.

◆ IsValid()

bool impeller::TypographerContext::IsValid ( ) const
virtual

Definition at line 17 of file typographer_context.cc.

17  {
18  return is_valid_;
19 }

Referenced by impeller::TypographerContextSkia::CreateGlyphAtlas().

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