third_party/freetype2/src/docs/reference/ft2-pfr_fonts.html - Issue 1524973002: Update freetype sources (2.6.2) in third party.

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Issue 1524973002: Update freetype sources (2.6.2) in third party. (Closed) Base URL: https://github.com/domokit/mojo.git@master

Patch Set: Created 5 years ago

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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

+"http://www.w3.org/TR/html4/loose.dtd">

+<html>

+<head>

+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

+<title>FreeType-2.6.2 API Reference</title>

+<style type="text/css">

+ a:link { color: #0000EF; }

+ a:visited { color: #51188E; }

+ a:hover { color: #FF0000; }

+ body { font-family: Verdana, Geneva, Arial, Helvetica, serif;

+ color: #000000;

+ background: #FFFFFF;

+ width: 87%;

+ margin: auto; }

+ div.section { width: 75%;

+ margin: auto; }

+ div.section hr { margin: 4ex 0 1ex 0; }

+ div.section h4 { background-color: #EEEEFF;

+ font-size: medium;

+ font-style: oblique;

+ font-weight: bold;

+ margin: 3ex 0 1.5ex 9%;

+ padding: 0.3ex 0 0.3ex 1%; }

+ div.section p { margin: 1.5ex 0 1.5ex 10%; }

+ div.section pre { margin: 3ex 0 3ex 9%;

+ background-color: #D6E8FF;

+ padding: 2ex 0 2ex 1%; }

+ div.section table.fields { width: 90%;

+ margin: 1.5ex 0 1.5ex 10%; }

+ div.section table.toc { width: 95%;

+ margin: 1.5ex 0 1.5ex 5%; }

+ div.timestamp { text-align: center;

+ font-size: 69%;

+ margin: 1.5ex 0 1.5ex 0; }

+ h1 { text-align: center; }

+ h3 { font-size: medium;

+ margin: 4ex 0 1.5ex 0; }

+ p { text-align: justify; }

+ pre.colored { color: blue; }

+ span.keyword { font-family: monospace;

+ text-align: left;

+ white-space: pre;

+ color: darkblue; }

+ table.fields td.val { font-weight: bold;

+ text-align: right;

+ width: 30%;

+ vertical-align: baseline;

+ padding: 1ex 1em 1ex 0; }

+ table.fields td.desc { vertical-align: baseline;

+ padding: 1ex 0 1ex 1em; }

+ table.fields td.desc p:first-child { margin: 0; }

+ table.fields td.desc p { margin: 1.5ex 0 0 0; }

+ table.index { margin: 6ex auto 6ex auto;

+ border: 0;

+ border-collapse: separate;

+ border-spacing: 1em 0.3ex; }

+ table.index tr { padding: 0; }

+ table.index td { padding: 0; }

+ table.index-toc-link { width: 100%;

+ border: 0;

+ border-spacing: 0;

+ margin: 1ex 0 1ex 0; }

+ table.index-toc-link td.left { padding: 0 0.5em 0 0.5em;

+ font-size: 83%;

+ text-align: left; }

+ table.index-toc-link td.middle { padding: 0 0.5em 0 0.5em;

+ font-size: 83%;

+ text-align: center; }

+ table.index-toc-link td.right { padding: 0 0.5em 0 0.5em;

+ font-size: 83%;

+ text-align: right; }

+ table.synopsis { margin: 6ex auto 6ex auto;

+ border: 0;

+ border-collapse: separate;

+ border-spacing: 2em 0.6ex; }

+ table.synopsis tr { padding: 0; }

+ table.synopsis td { padding: 0; }

+ table.toc td.link { width: 30%;

+ text-align: right;

+ vertical-align: baseline;

+ padding: 1ex 1em 1ex 0; }

+ table.toc td.desc { vertical-align: baseline;

+ padding: 1ex 0 1ex 1em;

+ text-align: left; }

+ table.toc td.desc p:first-child { margin: 0;

+ text-align: left; }

+ table.toc td.desc p { margin: 1.5ex 0 0 0;

+ text-align: left; }

+</style>

+</head>

+<body>

+<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table>

+<h1>FreeType-2.6.2 API Reference</h1>

+<h1 id="pfr_fonts">PFR Fonts</h1>

+<h2>Synopsis</h2>

+<table class="synopsis">

+<tr><td><a href="#FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</a></td><td><a href="#FT_Get_PFR_Kerning">FT_Get_PFR_Kerning</a></td><td><a href="#FT_Get_PFR_Advance">FT_Get_PFR_Advance</a></td></tr>

+</table>

+<p>This section contains the declaration of PFR-specific functions.</p>

+<div class="section">

+<h3 id="FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</h3>

+<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>

+<pre>

+ 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 );

+</pre>

+<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 ‘face->units_per_EM’ for non-PFR fonts. Optional (parameter can be NULL).</p>

+</td></tr>

+<tr><td class="val" id="ametrics_resolution">ametrics_resolution</td><td class="desc">

+<p>Metrics resolution. This is equivalent to ‘outline_resolution’ for non-PFR fonts. Optional (parameter can be NULL).</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 sub-pixels. This is equivalent to ‘face->size->x_scale’, but for metrics only. Optional (parameter can be NULL).</p>

+</td></tr>

+<tr><td class="val" id="ametrics_y_scale">ametrics_y_scale</td><td class="desc">

+<p>Same as ‘ametrics_x_scale’ but for the vertical direction. optional (parameter can be NULL).</p>

+</td></tr>

+</table>

+<h4>return</h4>

+<p>FreeType error code. 0 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>

+<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div>

+<div class="section">

+<h3 id="FT_Get_PFR_Kerning">FT_Get_PFR_Kerning</h3>

+<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>

+<pre>

+ 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 );

+</pre>

+<p>Return the kerning pair corresponding to two glyphs in a PFR face. The distance is expressed in metrics units, unlike the result of <a href="ft2-base_interface.html#FT_Get_Kerning">FT_Get_Kerning</a>.</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 means success.</p>

+<h4>note</h4>

+<p>This function always return distances in original PFR metrics units. This is unlike <a href="ft2-base_interface.html#FT_Get_Kerning">FT_Get_Kerning</a> with the <a href="ft2-base_interface.html#FT_Kerning_Mode">FT_KERNING_UNSCALED</a> mode, which always returns distances converted to outline units.</p>

+<p>You can use the value of the ‘x_scale’ and ‘y_scale’ parameters returned by <a href="ft2-pfr_fonts.html#FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</a> to scale these to device sub-pixels.</p>

+<hr>

+<div class="section">

+<h3 id="FT_Get_PFR_Advance">FT_Get_PFR_Advance</h3>

+<p>Defined in FT_PFR_H (freetype/ftpfr.h).</p>

+<pre>

+ 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 );

+</pre>

+<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 means success.</p>

+<h4>note</h4>

+<p>You can use the ‘x_scale’ or ‘y_scale’ results of <a href="ft2-pfr_fonts.html#FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</a> to convert the advance to device sub-pixels (i.e., 1/64th of pixels).</p>

+<hr>

+</body>

+</html>