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1318 lines
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FreeType-2.10.2 API Reference
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PFR Fonts
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Core API
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Core API
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Basic Data Types
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Glyph Layer Management
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Glyph Management
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Mac Specific Interface
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Header File Macros
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Format-Specific API
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Format-Specific API
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Multiple Masters
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TrueType Tables
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Type 1 Tables
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<a href="ft2-sfnt_names.html" title="SFNT Names" class="md-nav__link">
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SFNT Names
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</a>
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<a href="ft2-bdf_fonts.html" title="BDF and PCF Files" class="md-nav__link">
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BDF and PCF Files
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</a>
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<li class="md-nav__item">
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<a href="ft2-cid_fonts.html" title="CID Fonts" class="md-nav__link">
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CID Fonts
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</a>
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<label class="md-nav__link md-nav__link--active" for="__toc">
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PFR Fonts
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</label>
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<a href="ft2-pfr_fonts.html" title="PFR Fonts" class="md-nav__link md-nav__link--active">
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PFR Fonts
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<a href="#synopsis" class="md-nav__link">
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Synopsis
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<li class="md-nav__item">
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<a href="#ft_get_pfr_metrics" class="md-nav__link">
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FT_Get_PFR_Metrics
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</a>
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<li class="md-nav__item">
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<a href="#ft_get_pfr_kerning" class="md-nav__link">
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FT_Get_PFR_Kerning
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</a>
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<li class="md-nav__item">
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<a href="#ft_get_pfr_advance" class="md-nav__link">
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FT_Get_PFR_Advance
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</a>
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<li class="md-nav__item">
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<a href="ft2-winfnt_fonts.html" title="Window FNT Files" class="md-nav__link">
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Window FNT Files
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</a>
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<li class="md-nav__item">
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<a href="ft2-font_formats.html" title="Font Formats" class="md-nav__link">
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Font Formats
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<li class="md-nav__item">
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<a href="ft2-gasp_table.html" title="Gasp Table" class="md-nav__link">
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Gasp Table
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<input class="md-toggle md-nav__toggle" data-md-toggle="nav-6" type="checkbox" id="nav-6">
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<label class="md-nav__link" for="nav-6">
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Controlling FreeType Modules
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</label>
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<nav class="md-nav" data-md-component="collapsible" data-md-level="1">
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<label class="md-nav__title" for="nav-6">
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Controlling FreeType Modules
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</label>
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<ul class="md-nav__list" data-md-scrollfix>
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<li class="md-nav__item">
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<a href="ft2-auto_hinter.html" title="The auto-hinter" class="md-nav__link">
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The auto-hinter
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</a>
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<li class="md-nav__item">
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<a href="ft2-cff_driver.html" title="The CFF driver" class="md-nav__link">
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The CFF driver
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</a>
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FT_Get_PFR_Metrics
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<a href="#ft_get_pfr_kerning" class="md-nav__link">
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FT_Get_PFR_Kerning
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</a>
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<a href="#ft_get_pfr_advance" class="md-nav__link">
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FT_Get_PFR_Advance
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<div class="md-content">
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<article class="md-content__inner md-typeset">
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<p><a href="https://www.freetype.org">FreeType</a> » <a href="../">Docs</a> » <a href="index.html#format-specific-api">Format-Specific API</a> » PFR Fonts</p>
|
|
<hr />
|
|
<h1 id="pfr-fonts">PFR Fonts<a class="headerlink" href="#pfr-fonts" title="Permanent link">¶</a></h1>
|
|
<h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permanent link">¶</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">¶</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>
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|
|
|
<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->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->size->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 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">¶</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 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">¶</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>
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</td></tr>
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</table>
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<h4>output</h4>
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<table class="fields">
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<tr><td class="val" id="aadvance">aadvance</td><td class="desc">
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<p>The glyph advance in metrics units.</p>
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</td></tr>
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</table>
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<h4>return</h4>
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<p>FreeType error code. 0 means success.</p>
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<h4>note</h4>
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<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>
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