| Flutter Impeller |

Classes | Public Member Functions | List of all members
impeller::Font Class Reference

Describes a typeface along with any modifications to its intrinsic properties. More...

`#include <font.h>`

Inheritance diagram for impeller::Font:

## Classes
struct | Metrics
| Describes the modifications made to the intrinsic properties of a typeface. More...

## Public Member Functions
| Font (std::shared_ptr< Typeface > typeface, Metrics metrics)
| ~Font ()
bool | IsValid () const
const std::shared_ptr< Typeface > & | GetTypeface () const
| The typeface whose intrinsic properties this font modifies. More...
const Metrics & | GetMetrics () const
std::size_t | GetHash () const override
bool | IsEqual (const Font &other) const override
Public Member Functions inherited from impeller::Comparable< Font >
virtual std::size_t | GetHash () const=0

## Detailed Description

Describes a typeface along with any modifications to its intrinsic properties.

Definition at line 22 of file font.h.

## Constructor & Destructor Documentation

## ◆ Font()

impeller::Font::Font | ( | std::shared_ptr< Typeface > | typeface,
|  | Metrics | metrics
| ) |  |

Definition at line 9 of file font.cc.

10 : typeface_(std::move(typeface)), metrics_(metrics) {
11 if (!typeface_) {
12 return;
13 }
14 is_valid_ = true;
15 }

## ◆ ~Font()

impeller::Font::~Font | ( |  | ) |
| default

## Member Function Documentation

## ◆ GetHash()

std::size_t impeller::Font::GetHash | ( |  | ) | const
| override

Definition at line 27 of file font.cc.

27 {
28 return fml::HashCombine(is_valid_, typeface_ ? typeface_->GetHash() : 0u,
29 metrics_);
30 }

Referenced by std::hash< impeller::ScaledFont >::operator()().

## ◆ GetMetrics()

const Font::Metrics & impeller::Font::GetMetrics | ( |  | ) | const

Definition at line 37 of file font.cc.

37 {
38 return metrics_;
39 }

Referenced by impeller::CanAppendToExistingAtlas(), impeller::TextFrame::CollectUniqueFontGlyphPairs(), impeller::DrawGlyph(), impeller::PairsFitInAtlasOfSize(), and impeller::TextContents::Render().

## ◆ GetTypeface()

const std::shared_ptr< Typeface > & impeller::Font::GetTypeface | ( |  | ) | const

The typeface whose intrinsic properties this font modifies.

Returns
  The typeface.

Definition at line 23 of file font.cc.

23 {
24 return typeface_;
25 }

Referenced by impeller::CanAppendToExistingAtlas(), impeller::DrawGlyph(), and impeller::PairsFitInAtlasOfSize().

## ◆ IsEqual()

bool impeller::Font::IsEqual | ( | const Font & | other | ) | const
| override virtual

Implements impeller::Comparable< Font >.

Definition at line 32 of file font.cc.

32 {
33 return DeepComparePointer(typeface_, other.typeface_) &&
34 is_valid_ == other.is_valid_ && metrics_ == other.metrics_;
35 }

References impeller::DeepComparePointer().

Referenced by std::equal_to< impeller::ScaledFont >::operator()().

## ◆ IsValid()

bool impeller::Font::IsValid | ( |  | ) | const

Definition at line 19 of file font.cc.

19 {
20 return is_valid_;
21 }

Referenced by impeller::TextRun::TextRun().

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

- impeller/typographer/font.h
- impeller/typographer/font.cc

impeller::DeepComparePointer
bool DeepComparePointer(const std::shared_ptr< ComparableType > &lhs, const std::shared_ptr< ComparableType > &rhs)
Definition: comparable.h:57