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<center><h1>FreeType-2.5.0 API Reference</h1></center>
<center><h1>
The CFF driver
</h1></center>
<h2>Synopsis</h2>
<table align=center cellspacing=5 cellpadding=0 border=0>
<tr><td></td><td><a href="#hinting-engine">hinting-engine</a></td><td></td><td><a href="#FT_CFF_HINTING_XXX">FT_CFF_HINTING_XXX</a></td><td></td><td><a href="#no-stem-darkening">no-stem-darkening</a></td></tr>
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<table align=center width="87%"><tr><td>
<p>While FreeType's CFF driver doesn't expose API functions by itself, it is possible to control its behaviour with <a href="ft2-module_management.html#FT_Property_Set">FT_Property_Set</a> and <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a>. The following lists the available properties together with the necessary macros and structures.</p>
<p>The CFF driver's module name is ‘cff’.</p>
</td></tr></table><br>
<table align=center width="75%"><tr><td>
<h4><a name="hinting-engine">hinting-engine</a></h4>
<table align=center width="87%"><tr><td>
<p>Thanks to Adobe, which contributed a new hinting (and parsing) engine, an application can select between ‘freetype’ and ‘adobe’ if compiled with CFF_CONFIG_OPTION_OLD_ENGINE. If this configuration macro isn't defined, ‘hinting-engine’ does nothing.</p>
<p>The default engine is ‘freetype’ if CFF_CONFIG_OPTION_OLD_ENGINE is defined, and ‘adobe’ otherwise.</p>
<p>The following example code demonstrates how to select Adobe's hinting engine (omitting the error handling).</p>
<pre class="colored">
FT_Library library;
FT_Face face;
FT_UInt hinting_engine = FT_CFF_HINTING_ADOBE;
FT_Init_FreeType( &library );
FT_Property_Set( library, "cff",
"hinting-engine", &hinting_engine );
</pre>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This property can be used with <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a> also.</p>
</td></tr></table>
</td></tr></table>
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<table align=center width="75%"><tr><td>
<h4><a name="FT_CFF_HINTING_XXX">FT_CFF_HINTING_XXX</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_CFF_DRIVER_H (freetype/ftcffdrv.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
#define <a href="ft2-cff_driver.html#FT_CFF_HINTING_XXX">FT_CFF_HINTING_FREETYPE</a> 0
#define <a href="ft2-cff_driver.html#FT_CFF_HINTING_XXX">FT_CFF_HINTING_ADOBE</a> 1
</pre></table><br>
<table align=center width="87%"><tr><td>
<p>A list of constants used for the <a href="ft2-cff_driver.html#hinting-engine">hinting-engine</a> property to select the hinting engine for CFF fonts.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>values</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td colspan=0><b>FT_CFF_HINTING_FREETYPE</b></td></tr>
<tr valign=top><td></td><td>
<p>Use the old FreeType hinting engine.</p>
</td></tr>
<tr valign=top><td><b>FT_CFF_HINTING_ADOBE</b></td><td>
<p>Use the hinting engine contributed by Adobe.</p>
</td></tr>
</table>
</td></tr></table>
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<table align=center width="75%"><tr><td>
<h4><a name="no-stem-darkening">no-stem-darkening</a></h4>
<table align=center width="87%"><tr><td>
<p>By default, the Adobe CFF engine darkens stems at smaller sizes, regardless of hinting, to enhance contrast. Setting this property, stem darkening gets switched off.</p>
<p>Note that stem darkening is never applied if <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_NO_SCALE</a> is set.</p>
<pre class="colored">
FT_Library library;
FT_Face face;
FT_Bool no_stem_darkening = TRUE;
FT_Init_FreeType( &library );
FT_Property_Set( library, "cff",
"no-stem-darkening", &no_stem_darkening );
</pre>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This property can be used with <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a> also.</p>
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