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The TrueType Engine
<
table align=center
cellspacing=5 cellpadding=0 border=0>
<
tr><
td><
/td><
td><
a href="#FT_TrueTypeEngineType">FT_TrueTypeEngineType<
/a><
/td><
td><
/td><
td><
a href="#FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type<
/a><
/td><
/tr>
<
p>This section contains a function used to query the level of TrueType bytecode support compiled in this
version of the library.<
/p>
<
h4><
a name="FT_TrueTypeEngineType">FT_TrueTypeEngineType<
/a><
/h4>
Defined in FT_MODULE_H (freetype/ftmodapi.h).
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width="87%"><
tr bgcolor="#D6E8FF"><
td><
pre>
<
span class="keyword">typedef<
/span> <
span class="keyword">enum<
/span> FT_TrueTypeEngineType_
{
<
a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TRUETYPE_ENGINE_TYPE_NONE<
/a>
= 0,
<
a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TRUETYPE_ENGINE_TYPE_UNPATENTED<
/a>,
<
a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TRUETYPE_ENGINE_TYPE_PATENTED<
/a>
} <
b>FT_TrueTypeEngineType<
/b>;
<
p>A list of values describing which kind of TrueType bytecode engine is implemented in a given FT_Library instance. It is used by the <
a href="ft2-truetype_engine.html#FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type<
/a> function.<
/p>
<
table cellpadding=3 border=0>
<
tr valign=top><
td colspan=0><
b>FT_TRUETYPE_ENGINE_TYPE_NONE<
/b><
/td><
/tr>
<
p>The library doesn
't implement any kind of bytecode interpreter.</p>
</td></tr>
<tr valign=top><td colspan=0><b>FT_TRUETYPE_ENGINE_TYPE_UNPATENTED</b></td></tr>
<tr valign=top><td></td><td>
<p>The library implements a bytecode interpreter that doesn't support the patented operations of the TrueType virtual machine.<
/p>
<
p>Its main use is to load certain Asian fonts which position and scale glyph components with bytecode instructions. It produces bad output
for most other fonts.<
/p>
<
tr valign=top><
td colspan=0><
b>FT_TRUETYPE_ENGINE_TYPE_PATENTED<
/b><
/td><
/tr>
<
p>The library implements a bytecode interpreter that covers the full instruction set of the TrueType virtual machine
(this was governed by patents until May
2010, hence the
name).<
/p>
<
h4><
a name="FT_Get_TrueType_Engine_Type">FT_Get_TrueType_Engine_Type<
/a><
/h4>
Defined in FT_MODULE_H (freetype/ftmodapi.h).
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table align=center
width="87%"><
tr bgcolor="#D6E8FF"><
td><
pre>
FT_EXPORT
( <
a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TrueTypeEngineType<
/a>
)
<
b>FT_Get_TrueType_Engine_Type<
/b>
( <
a href="ft2-base_interface.html#FT_Library">FT_Library<
/a> library
);
<
p>Return an <
a href="ft2-truetype_engine.html#FT_TrueTypeEngineType">FT_TrueTypeEngineType<
/a>
value to indicate which level of the TrueType virtual machine a given library instance supports.<
/p>
<
table cellpadding=3 border=0>
<
p>A library instance.<
/p>
<
p>A
value indicating which level is supported.<
/p>