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Quick retrieval of advance values
<
table align=center
cellspacing=5 cellpadding=0 border=0>
<
tr><
td><
/td><
td><
a href="#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY<
/a><
/td><
td><
/td><
td><
a href="#FT_Get_Advances">FT_Get_Advances<
/a><
/td><
/tr>
<
p>This section contains functions to quickly extract advance values without handling glyph outlines, if possible.<
/p>
<
h4><
a name="FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY<
/a><
/h4>
Defined in FT_ADVANCES_H (freetype/ftadvanc.h).
<
table align=center
width="87%"><
tr bgcolor="#D6E8FF"><
td><
pre>
#define <
b>FT_ADVANCE_FLAG_FAST_ONLY<
/b> 0x20000000UL
<
p>A bit-flag to be OR-ed with the ‘flags’ parameter of the <
a href="ft2-quick_advance.html#FT_Get_Advance">FT_Get_Advance<
/a> and <
a href="ft2-quick_advance.html#FT_Get_Advances">FT_Get_Advances<
/a> functions.<
/p>
<
p>If set, it indicates that you want these functions to fail if the corresponding hinting mode or font driver doesn
't allow for very quick advance computation.</p>
<p>Typically, glyphs which are either unscaled, unhinted, bitmapped, or light-hinted can have their advance width computed very quickly.</p>
<p>Normal and bytecode hinted modes, which require loading, scaling, and hinting of the glyph outline, are extremely slow by comparison.</p>
</td></tr></table><br>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
<table align=center width="75%"><tr><td>
<h4><a name="FT_Get_Advance">FT_Get_Advance</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_ADVANCES_H (freetype/ftadvanc.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
<b>FT_Get_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_Int32">FT_Int32</a> load_flags,
<a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *padvance );
</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Retrieve the advance value of a given glyph outline in an <a href="ft2-base_interface.html#FT_Face">FT_Face</a>.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>face</b></td><td>
<p>The source <a href="ft2-base_interface.html#FT_Face">FT_Face</a> handle.</p>
</td></tr>
<tr valign=top><td><b>gindex</b></td><td>
<p>The glyph index.</p>
</td></tr>
<tr valign=top><td><b>load_flags</b></td><td>
<p>A set of bit flags similar to those used when calling <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a>, used to determine what kind of advances you need.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>padvance</b></td><td>
<p>The advance value. If scaling is performed (based on the value of ‘load_flags’), the advance value is in 16.16 format. Otherwise, it is in font units.</p>
<p>If <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_VERTICAL_LAYOUT</a> is set, this is the vertical advance corresponding to a vertical layout. Otherwise, it is the horizontal advance in a horizontal layout.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0 means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This function may fail if you use <a href="ft2-quick_advance.html#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</a> and if the corresponding font backend doesn't have a quick way to retrieve the advances.<
/p>
<
p>A scaled advance is returned in
16.16 format but isn
't transformed by the affine transformation specified by <a href="ft2-base_interface.html#FT_Set_Transform">FT_Set_Transform</a>.</p>
</td></tr></table>
</td></tr></table>
<hr width="75%">
<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
<td width="100%"></td>
<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
<table align=center width="75%"><tr><td>
<h4><a name="FT_Get_Advances">FT_Get_Advances</a></h4>
<table align=center width="87%"><tr><td>
Defined in FT_ADVANCES_H (freetype/ftadvanc.h).
</td></tr></table><br>
<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
<b>FT_Get_Advances</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> start,
<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> count,
<a href="ft2-basic_types.html#FT_Int32">FT_Int32</a> load_flags,
<a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *padvances );
</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Retrieve the advance values of several glyph outlines in an <a href="ft2-base_interface.html#FT_Face">FT_Face</a>.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>face</b></td><td>
<p>The source <a href="ft2-base_interface.html#FT_Face">FT_Face</a> handle.</p>
</td></tr>
<tr valign=top><td><b>start</b></td><td>
<p>The first glyph index.</p>
</td></tr>
<tr valign=top><td><b>count</b></td><td>
<p>The number of advance values you want to retrieve.</p>
</td></tr>
<tr valign=top><td><b>load_flags</b></td><td>
<p>A set of bit flags similar to those used when calling <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a>.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
<p></p>
<table cellpadding=3 border=0>
<tr valign=top><td><b>padvance</b></td><td>
<p>The advance values. This array, to be provided by the caller, must contain at least ‘count’ elements.</p>
<p>If scaling is performed (based on the value of ‘load_flags’), the advance values are in 16.16 format. Otherwise, they are in font units.</p>
<p>If <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_VERTICAL_LAYOUT</a> is set, these are the vertical advances corresponding to a vertical layout. Otherwise, they are the horizontal advances in a horizontal layout.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
<p>FreeType error code. 0 means success.</p>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This function may fail if you use <a href="ft2-quick_advance.html#FT_ADVANCE_FLAG_FAST_ONLY">FT_ADVANCE_FLAG_FAST_ONLY</a> and if the corresponding font backend doesn't have a quick way to retrieve the advances.<
/p>
<
p>Scaled advances are returned in
16.16 format but aren
't transformed by the affine transformation specified by <a href="ft2-base_interface.html#FT_Set_Transform">FT_Set_Transform</a>.</p>
</td></tr></table>
</td></tr></table>
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