| Flutter Impeller |

Public Member Functions | Friends | List of all members
impeller::FontGlyphAtlas Class Reference

An object that can look up glyph locations within the GlyphAtlas for a particular typeface. More...

`#include <glyph_atlas.h>`

## Public Member Functions
| FontGlyphAtlas ()=default
std::optional< std::pair< Rect, Rect > > | FindGlyphBounds (const SubpixelGlyph &glyph) const
| Find the location of a glyph in the atlas. More...

## Friends
class | GlyphAtlas

## Detailed Description

An object that can look up glyph locations within the GlyphAtlas for a particular typeface.

Definition at line 204 of file glyph_atlas.h.

## Constructor & Destructor Documentation

## ◆ FontGlyphAtlas()

impeller::FontGlyphAtlas::FontGlyphAtlas | ( |  | ) |
| default

## Member Function Documentation

## ◆ FindGlyphBounds()

std::optional< std::pair< Rect, Rect > > impeller::FontGlyphAtlas::FindGlyphBounds | ( | const SubpixelGlyph & | glyph | ) | const

Find the location of a glyph in the atlas.

Parameters

  [in] | glyph | The glyph

Returns
  The location of the glyph in the atlas. `std::nullopt` if the glyph is not in the atlas.

Definition at line 119 of file glyph_atlas.cc.

120 {
121 const auto& found = positions_.find(glyph);
122 if (found == positions_.end()) {
123 return std::nullopt;
124 }
125 return found->second;
126 }

Referenced by impeller::CollectNewGlyphs(), impeller::TypographerContextSTB::CreateGlyphAtlas(), and impeller::TextContents::Render().

## Friends And Related Function Documentation

## ◆ GlyphAtlas

friend class GlyphAtlas
| friend

Definition at line 220 of file glyph_atlas.h.

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

- impeller/typographer/glyph_atlas.h
- impeller/typographer/glyph_atlas.cc