DoukutsuNikki/external/freetype/docs/reference/ft2-pfr_fonts.html
2022-11-03 02:29:20 -04:00

1318 lines
No EOL
31 KiB
HTML

<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="description" content="API Reference Documentation for FreeType-2.10.2">
<meta name="author" content="FreeType Contributors">
<meta name="lang:clipboard.copy" content="Copy to clipboard">
<meta name="lang:clipboard.copied" content="Copied to clipboard">
<meta name="lang:search.language" content="en">
<meta name="lang:search.pipeline.stopwords" content="True">
<meta name="lang:search.pipeline.trimmer" content="True">
<meta name="lang:search.result.none" content="No matching documents">
<meta name="lang:search.result.one" content="1 matching document">
<meta name="lang:search.result.other" content="# matching documents">
<meta name="lang:search.tokenizer" content="[\s\-]+">
<link rel="shortcut icon" href="images/favico.ico">
<meta name="generator" content="mkdocs-1.1, mkdocs-material-4.6.3">
<title>PFR Fonts - FreeType-2.10.2 API Reference</title>
<link rel="stylesheet" href="assets/stylesheets/application.adb8469c.css">
<link rel="stylesheet" href="assets/stylesheets/application-palette.a8b3c06d.css">
<meta name="theme-color" content="#4caf50">
<script src="assets/javascripts/modernizr.86422ebf.js"></script>
<link href="https://fonts.gstatic.com" rel="preconnect" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Noto+Serif:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>body,input{font-family:"Noto Serif","Helvetica Neue",Helvetica,Arial,sans-serif}code,kbd,pre{font-family:"Roboto Mono","Courier New",Courier,monospace}</style>
<link rel="stylesheet" href="assets/fonts/material-icons.css">
<link rel="stylesheet" href="stylesheets/extra.css">
</head>
<body dir="ltr" data-md-color-primary="green" data-md-color-accent="green">
<svg class="md-svg">
<defs>
</defs>
</svg>
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" data-md-component="overlay" for="__drawer"></label>
<a href="#pfr-fonts" tabindex="0" class="md-skip">
Skip to content
</a>
<header class="md-header" data-md-component="header">
<nav class="md-header-nav md-grid">
<div class="md-flex">
<div class="md-flex__cell md-flex__cell--shrink">
<a href="." title="FreeType-2.10.2 API Reference" aria-label="FreeType-2.10.2 API Reference" class="md-header-nav__button md-logo">
<img alt="logo" src="images/favico.ico" width="24" height="24">
</a>
</div>
<div class="md-flex__cell md-flex__cell--shrink">
<label class="md-icon md-icon--menu md-header-nav__button" for="__drawer"></label>
</div>
<div class="md-flex__cell md-flex__cell--stretch">
<div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
<span class="md-header-nav__topic">
FreeType-2.10.2 API Reference
</span>
<span class="md-header-nav__topic">
PFR Fonts
</span>
</div>
</div>
<div class="md-flex__cell md-flex__cell--shrink">
<label class="md-icon md-icon--search md-header-nav__button" for="__search"></label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" aria-label="search" name="query" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="query" data-md-state="active">
<label class="md-icon md-search__icon" for="__search"></label>
<button type="reset" class="md-icon md-search__icon" data-md-component="reset" tabindex="-1">
&#xE5CD;
</button>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="result">
<div class="md-search-result__meta">
Type to start searching
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</nav>
</header>
<div class="md-container">
<main class="md-main" role="main">
<div class="md-main__inner md-grid" data-md-component="container">
<div class="md-sidebar md-sidebar--primary" data-md-component="navigation">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary" data-md-level="0">
<label class="md-nav__title md-nav__title--site" for="__drawer">
<a href="." title="FreeType-2.10.2 API Reference" class="md-nav__button md-logo">
<img alt="logo" src="images/favico.ico" width="48" height="48">
</a>
FreeType-2.10.2 API Reference
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="index.html" title="TOC" class="md-nav__link">
TOC
</a>
</li>
<li class="md-nav__item">
<a href="ft2-index.html" title="Index" class="md-nav__link">
Index
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-3" type="checkbox" id="nav-3">
<label class="md-nav__link" for="nav-3">
General Remarks
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-3">
General Remarks
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-header_inclusion.html" title="FreeType's header inclusion scheme" class="md-nav__link">
FreeType's header inclusion scheme
</a>
</li>
<li class="md-nav__item">
<a href="ft2-user_allocation.html" title="User allocation" class="md-nav__link">
User allocation
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-4" type="checkbox" id="nav-4">
<label class="md-nav__link" for="nav-4">
Core API
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-4">
Core API
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-version.html" title="FreeType Version" class="md-nav__link">
FreeType Version
</a>
</li>
<li class="md-nav__item">
<a href="ft2-basic_types.html" title="Basic Data Types" class="md-nav__link">
Basic Data Types
</a>
</li>
<li class="md-nav__item">
<a href="ft2-base_interface.html" title="Base Interface" class="md-nav__link">
Base Interface
</a>
</li>
<li class="md-nav__item">
<a href="ft2-glyph_variants.html" title="Unicode Variation Sequences" class="md-nav__link">
Unicode Variation Sequences
</a>
</li>
<li class="md-nav__item">
<a href="ft2-color_management.html" title="Glyph Color Management" class="md-nav__link">
Glyph Color Management
</a>
</li>
<li class="md-nav__item">
<a href="ft2-layer_management.html" title="Glyph Layer Management" class="md-nav__link">
Glyph Layer Management
</a>
</li>
<li class="md-nav__item">
<a href="ft2-glyph_management.html" title="Glyph Management" class="md-nav__link">
Glyph Management
</a>
</li>
<li class="md-nav__item">
<a href="ft2-mac_specific.html" title="Mac Specific Interface" class="md-nav__link">
Mac Specific Interface
</a>
</li>
<li class="md-nav__item">
<a href="ft2-sizes_management.html" title="Size Management" class="md-nav__link">
Size Management
</a>
</li>
<li class="md-nav__item">
<a href="ft2-header_file_macros.html" title="Header File Macros" class="md-nav__link">
Header File Macros
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-5" type="checkbox" id="nav-5" checked>
<label class="md-nav__link" for="nav-5">
Format-Specific API
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-5">
Format-Specific API
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-multiple_masters.html" title="Multiple Masters" class="md-nav__link">
Multiple Masters
</a>
</li>
<li class="md-nav__item">
<a href="ft2-truetype_tables.html" title="TrueType Tables" class="md-nav__link">
TrueType Tables
</a>
</li>
<li class="md-nav__item">
<a href="ft2-type1_tables.html" title="Type 1 Tables" class="md-nav__link">
Type 1 Tables
</a>
</li>
<li class="md-nav__item">
<a href="ft2-sfnt_names.html" title="SFNT Names" class="md-nav__link">
SFNT Names
</a>
</li>
<li class="md-nav__item">
<a href="ft2-bdf_fonts.html" title="BDF and PCF Files" class="md-nav__link">
BDF and PCF Files
</a>
</li>
<li class="md-nav__item">
<a href="ft2-cid_fonts.html" title="CID Fonts" class="md-nav__link">
CID Fonts
</a>
</li>
<li class="md-nav__item md-nav__item--active">
<input class="md-toggle md-nav__toggle" data-md-toggle="toc" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
PFR Fonts
</label>
<a href="ft2-pfr_fonts.html" title="PFR Fonts" class="md-nav__link md-nav__link--active">
PFR Fonts
</a>
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#synopsis" class="md-nav__link">
Synopsis
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_metrics" class="md-nav__link">
FT_Get_PFR_Metrics
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_kerning" class="md-nav__link">
FT_Get_PFR_Kerning
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_advance" class="md-nav__link">
FT_Get_PFR_Advance
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="ft2-winfnt_fonts.html" title="Window FNT Files" class="md-nav__link">
Window FNT Files
</a>
</li>
<li class="md-nav__item">
<a href="ft2-font_formats.html" title="Font Formats" class="md-nav__link">
Font Formats
</a>
</li>
<li class="md-nav__item">
<a href="ft2-gasp_table.html" title="Gasp Table" class="md-nav__link">
Gasp Table
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-6" type="checkbox" id="nav-6">
<label class="md-nav__link" for="nav-6">
Controlling FreeType Modules
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-6">
Controlling FreeType Modules
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-auto_hinter.html" title="The auto-hinter" class="md-nav__link">
The auto-hinter
</a>
</li>
<li class="md-nav__item">
<a href="ft2-cff_driver.html" title="The CFF driver" class="md-nav__link">
The CFF driver
</a>
</li>
<li class="md-nav__item">
<a href="ft2-t1_cid_driver.html" title="The Type 1 and CID drivers" class="md-nav__link">
The Type 1 and CID drivers
</a>
</li>
<li class="md-nav__item">
<a href="ft2-tt_driver.html" title="The TrueType driver" class="md-nav__link">
The TrueType driver
</a>
</li>
<li class="md-nav__item">
<a href="ft2-pcf_driver.html" title="The PCF driver" class="md-nav__link">
The PCF driver
</a>
</li>
<li class="md-nav__item">
<a href="ft2-properties.html" title="Driver properties" class="md-nav__link">
Driver properties
</a>
</li>
<li class="md-nav__item">
<a href="ft2-parameter_tags.html" title="Parameter Tags" class="md-nav__link">
Parameter Tags
</a>
</li>
<li class="md-nav__item">
<a href="ft2-lcd_rendering.html" title="Subpixel Rendering" class="md-nav__link">
Subpixel Rendering
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-7" type="checkbox" id="nav-7">
<label class="md-nav__link" for="nav-7">
Cache Sub-System
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-7">
Cache Sub-System
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-cache_subsystem.html" title="Cache Sub-System" class="md-nav__link">
Cache Sub-System
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-8" type="checkbox" id="nav-8">
<label class="md-nav__link" for="nav-8">
Support API
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-8">
Support API
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-computations.html" title="Computations" class="md-nav__link">
Computations
</a>
</li>
<li class="md-nav__item">
<a href="ft2-list_processing.html" title="List Processing" class="md-nav__link">
List Processing
</a>
</li>
<li class="md-nav__item">
<a href="ft2-outline_processing.html" title="Outline Processing" class="md-nav__link">
Outline Processing
</a>
</li>
<li class="md-nav__item">
<a href="ft2-quick_advance.html" title="Quick retrieval of advance values" class="md-nav__link">
Quick retrieval of advance values
</a>
</li>
<li class="md-nav__item">
<a href="ft2-bitmap_handling.html" title="Bitmap Handling" class="md-nav__link">
Bitmap Handling
</a>
</li>
<li class="md-nav__item">
<a href="ft2-raster.html" title="Scanline Converter" class="md-nav__link">
Scanline Converter
</a>
</li>
<li class="md-nav__item">
<a href="ft2-glyph_stroker.html" title="Glyph Stroker" class="md-nav__link">
Glyph Stroker
</a>
</li>
<li class="md-nav__item">
<a href="ft2-system_interface.html" title="System Interface" class="md-nav__link">
System Interface
</a>
</li>
<li class="md-nav__item">
<a href="ft2-module_management.html" title="Module Management" class="md-nav__link">
Module Management
</a>
</li>
<li class="md-nav__item">
<a href="ft2-gzip.html" title="GZIP Streams" class="md-nav__link">
GZIP Streams
</a>
</li>
<li class="md-nav__item">
<a href="ft2-lzw.html" title="LZW Streams" class="md-nav__link">
LZW Streams
</a>
</li>
<li class="md-nav__item">
<a href="ft2-bzip2.html" title="BZIP2 Streams" class="md-nav__link">
BZIP2 Streams
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-9" type="checkbox" id="nav-9">
<label class="md-nav__link" for="nav-9">
Error Codes
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-9">
Error Codes
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-error_enumerations.html" title="Error Enumerations" class="md-nav__link">
Error Enumerations
</a>
</li>
<li class="md-nav__item">
<a href="ft2-error_code_values.html" title="Error Code Values" class="md-nav__link">
Error Code Values
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-toggle md-nav__toggle" data-md-toggle="nav-10" type="checkbox" id="nav-10">
<label class="md-nav__link" for="nav-10">
Miscellaneous
</label>
<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
<label class="md-nav__title" for="nav-10">
Miscellaneous
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="ft2-gx_validation.html" title="TrueTypeGX/AAT Validation" class="md-nav__link">
TrueTypeGX/AAT Validation
</a>
</li>
<li class="md-nav__item">
<a href="ft2-incremental.html" title="Incremental Loading" class="md-nav__link">
Incremental Loading
</a>
</li>
<li class="md-nav__item">
<a href="ft2-truetype_engine.html" title="The TrueType Engine" class="md-nav__link">
The TrueType Engine
</a>
</li>
<li class="md-nav__item">
<a href="ft2-ot_validation.html" title="OpenType Validation" class="md-nav__link">
OpenType Validation
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="toc">
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--secondary">
<label class="md-nav__title" for="__toc">Table of contents</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#synopsis" class="md-nav__link">
Synopsis
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_metrics" class="md-nav__link">
FT_Get_PFR_Metrics
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_kerning" class="md-nav__link">
FT_Get_PFR_Kerning
</a>
</li>
<li class="md-nav__item">
<a href="#ft_get_pfr_advance" class="md-nav__link">
FT_Get_PFR_Advance
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content">
<article class="md-content__inner md-typeset">
<p><a href="https://www.freetype.org">FreeType</a> &raquo; <a href="../">Docs</a> &raquo; <a href="index.html#format-specific-api">Format-Specific API</a> &raquo; PFR Fonts</p>
<hr />
<h1 id="pfr-fonts">PFR Fonts<a class="headerlink" href="#pfr-fonts" title="Permanent link">&para;</a></h1>
<h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permanent link">&para;</a></h2>
<p>This section contains the declaration of PFR-specific functions.</p>
<h2 id="ft_get_pfr_metrics">FT_Get_PFR_Metrics<a class="headerlink" href="#ft_get_pfr_metrics" title="Permanent link">&para;</a></h2>
<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>
<div class = "codehilite"><pre><code> FT_EXPORT( <a href="ft2-basic_types.html#ft_error">FT_Error</a> )
<b>FT_Get_PFR_Metrics</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a> face,
<a href="ft2-basic_types.html#ft_uint">FT_UInt</a> *aoutline_resolution,
<a href="ft2-basic_types.html#ft_uint">FT_UInt</a> *ametrics_resolution,
<a href="ft2-basic_types.html#ft_fixed">FT_Fixed</a> *ametrics_x_scale,
<a href="ft2-basic_types.html#ft_fixed">FT_Fixed</a> *ametrics_y_scale );
</code></pre></div>
<p>Return the outline and metrics resolutions of a given PFR face.</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="face">face</td><td class="desc">
<p>Handle to the input face. It can be a non-PFR face.</p>
</td></tr>
</table>
<h4>output</h4>
<table class="fields">
<tr><td class="val" id="aoutline_resolution">aoutline_resolution</td><td class="desc">
<p>Outline resolution. This is equivalent to <code>face-&gt;units_per_EM</code> for non-PFR fonts. Optional (parameter can be <code>NULL</code>).</p>
</td></tr>
<tr><td class="val" id="ametrics_resolution">ametrics_resolution</td><td class="desc">
<p>Metrics resolution. This is equivalent to <code>outline_resolution</code> for non-PFR fonts. Optional (parameter can be <code>NULL</code>).</p>
</td></tr>
<tr><td class="val" id="ametrics_x_scale">ametrics_x_scale</td><td class="desc">
<p>A 16.16 fixed-point number used to scale distance expressed in metrics units to device subpixels. This is equivalent to <code>face-&gt;size-&gt;x_scale</code>, but for metrics only. Optional (parameter can be <code>NULL</code>).</p>
</td></tr>
<tr><td class="val" id="ametrics_y_scale">ametrics_y_scale</td><td class="desc">
<p>Same as <code>ametrics_x_scale</code> but for the vertical direction. optional (parameter can be <code>NULL</code>).</p>
</td></tr>
</table>
<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p>
<h4>note</h4>
<p>If the input face is not a PFR, this function will return an error. However, in all cases, it will return valid values.</p>
<hr>
<h2 id="ft_get_pfr_kerning">FT_Get_PFR_Kerning<a class="headerlink" href="#ft_get_pfr_kerning" title="Permanent link">&para;</a></h2>
<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>
<div class = "codehilite"><pre><code> FT_EXPORT( <a href="ft2-basic_types.html#ft_error">FT_Error</a> )
<b>FT_Get_PFR_Kerning</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a> face,
<a href="ft2-basic_types.html#ft_uint">FT_UInt</a> left,
<a href="ft2-basic_types.html#ft_uint">FT_UInt</a> right,
<a href="ft2-basic_types.html#ft_vector">FT_Vector</a> *avector );
</code></pre></div>
<p>Return the kerning pair corresponding to two glyphs in a PFR face. The distance is expressed in metrics units, unlike the result of <code><a href="ft2-base_interface.html#ft_get_kerning">FT_Get_Kerning</a></code>.</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="face">face</td><td class="desc">
<p>A handle to the input face.</p>
</td></tr>
<tr><td class="val" id="left">left</td><td class="desc">
<p>Index of the left glyph.</p>
</td></tr>
<tr><td class="val" id="right">right</td><td class="desc">
<p>Index of the right glyph.</p>
</td></tr>
</table>
<h4>output</h4>
<table class="fields">
<tr><td class="val" id="avector">avector</td><td class="desc">
<p>A kerning vector.</p>
</td></tr>
</table>
<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p>
<h4>note</h4>
<p>This function always return distances in original PFR metrics units. This is unlike <code><a href="ft2-base_interface.html#ft_get_kerning">FT_Get_Kerning</a></code> with the <code><a href="ft2-base_interface.html#ft_kerning_mode">FT_KERNING_UNSCALED</a></code> mode, which always returns distances converted to outline units.</p>
<p>You can use the value of the <code>x_scale</code> and <code>y_scale</code> parameters returned by <code><a href="ft2-pfr_fonts.html#ft_get_pfr_metrics">FT_Get_PFR_Metrics</a></code> to scale these to device subpixels.</p>
<hr>
<h2 id="ft_get_pfr_advance">FT_Get_PFR_Advance<a class="headerlink" href="#ft_get_pfr_advance" title="Permanent link">&para;</a></h2>
<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>
<div class = "codehilite"><pre><code> FT_EXPORT( <a href="ft2-basic_types.html#ft_error">FT_Error</a> )
<b>FT_Get_PFR_Advance</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a> face,
<a href="ft2-basic_types.html#ft_uint">FT_UInt</a> gindex,
<a href="ft2-basic_types.html#ft_pos">FT_Pos</a> *aadvance );
</code></pre></div>
<p>Return a given glyph advance, expressed in original metrics units, from a PFR font.</p>
<h4>input</h4>
<table class="fields">
<tr><td class="val" id="face">face</td><td class="desc">
<p>A handle to the input face.</p>
</td></tr>
<tr><td class="val" id="gindex">gindex</td><td class="desc">
<p>The glyph index.</p>
</td></tr>
</table>
<h4>output</h4>
<table class="fields">
<tr><td class="val" id="aadvance">aadvance</td><td class="desc">
<p>The glyph advance in metrics units.</p>
</td></tr>
</table>
<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p>
<h4>note</h4>
<p>You can use the <code>x_scale</code> or <code>y_scale</code> results of <code><a href="ft2-pfr_fonts.html#ft_get_pfr_metrics">FT_Get_PFR_Metrics</a></code> to convert the advance to device subpixels (i.e., 1/64<sup>th</sup> of pixels).</p>
<hr>
</article>
</div>
</div>
</main>
<footer class="md-footer">
<div class="md-footer-nav">
<nav class="md-footer-nav__inner md-grid">
<a href="ft2-cid_fonts.html" title="CID Fonts" class="md-flex md-footer-nav__link md-footer-nav__link--prev" rel="prev">
<div class="md-flex__cell md-flex__cell--shrink">
<i class="md-icon md-icon--arrow-back md-footer-nav__button"></i>
</div>
<div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title">
<span class="md-flex__ellipsis">
<span class="md-footer-nav__direction">
Previous
</span>
CID Fonts
</span>
</div>
</a>
<a href="ft2-winfnt_fonts.html" title="Window FNT Files" class="md-flex md-footer-nav__link md-footer-nav__link--next" rel="next">
<div class="md-flex__cell md-flex__cell--stretch md-footer-nav__title">
<span class="md-flex__ellipsis">
<span class="md-footer-nav__direction">
Next
</span>
Window FNT Files
</span>
</div>
<div class="md-flex__cell md-flex__cell--shrink">
<i class="md-icon md-icon--arrow-forward md-footer-nav__button"></i>
</div>
</a>
</nav>
</div>
<div class="md-footer-meta md-typeset">
<div class="md-footer-meta__inner md-grid">
<div class="md-footer-copyright">
<div class="md-footer-copyright__highlight">
Copyright 2020 <a href = "https://www.freetype.org/license.html">The FreeType Project</a>.
</div>
powered by
<a href="https://www.mkdocs.org" target="_blank" rel="noopener">MkDocs</a>
and
<a href="https://squidfunk.github.io/mkdocs-material/" target="_blank" rel="noopener">
Material for MkDocs</a>
</div>
</div>
</div>
</footer>
</div>
<script src="assets/javascripts/application.c33a9706.js"></script>
<script>app.initialize({version:"1.1",url:{base:"."}})</script>
<script src="javascripts/extra.js"></script>
</body>
</html>