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207 lines
9.3 KiB
HTML
207 lines
9.3 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>FreeType-2.5.0 API Reference</title>
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</style>
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</head>
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<body>
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<table align=center><tr><td><font size=-1>[<a href="ft2-index.html">Index</a>]</font></td>
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<td width="100%"></td>
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<td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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<center><h1>FreeType-2.5.0 API Reference</h1></center>
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<center><h1>
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PFR Fonts
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</h1></center>
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<h2>Synopsis</h2>
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<table align=center cellspacing=5 cellpadding=0 border=0>
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<tr><td></td><td><a href="#FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</a></td><td></td><td><a href="#FT_Get_PFR_Kerning">FT_Get_PFR_Kerning</a></td><td></td><td><a href="#FT_Get_PFR_Advance">FT_Get_PFR_Advance</a></td></tr>
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</table><br><br>
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<table align=center width="87%"><tr><td>
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<p>This section contains the declaration of PFR-specific functions.</p>
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</td></tr></table><br>
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<table align=center width="75%"><tr><td>
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<h4><a name="FT_Get_PFR_Metrics">FT_Get_PFR_Metrics</a></h4>
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<table align=center width="87%"><tr><td>
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Defined in FT_PFR_H (freetype/ftpfr.h).
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</td></tr></table><br>
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<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
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<b>FT_Get_PFR_Metrics</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
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<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> *aoutline_resolution,
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<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> *ametrics_resolution,
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<a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *ametrics_x_scale,
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<a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> *ametrics_y_scale );
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</pre></table><br>
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<table align=center width="87%"><tr><td>
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<p>Return the outline and metrics resolutions of a given PFR face.</p>
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</td></tr></table><br>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>face</b></td><td>
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<p>Handle to the input face. It can be a non-PFR face.</p>
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</td></tr>
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</table>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>aoutline_resolution</b></td><td>
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<p>Outline resolution. This is equivalent to ‘face->units_per_EM’ for non-PFR fonts. Optional (parameter can be NULL).</p>
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</td></tr>
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<tr valign=top><td><b>ametrics_resolution</b></td><td>
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<p>Metrics resolution. This is equivalent to ‘outline_resolution’ for non-PFR fonts. Optional (parameter can be NULL).</p>
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</td></tr>
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<tr valign=top><td><b>ametrics_x_scale</b></td><td>
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<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>
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</td></tr>
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<tr valign=top><td><b>ametrics_y_scale</b></td><td>
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<p>Same as ‘ametrics_x_scale’ but for the vertical direction. optional (parameter can be NULL).</p>
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</td></tr>
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</table>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
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<p>FreeType error code. 0 means success.</p>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
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<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>
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</td></tr></table>
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</td></tr></table>
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<hr width="75%">
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<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
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<td width="100%"></td>
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<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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<table align=center width="75%"><tr><td>
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<h4><a name="FT_Get_PFR_Kerning">FT_Get_PFR_Kerning</a></h4>
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<table align=center width="87%"><tr><td>
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Defined in FT_PFR_H (freetype/ftpfr.h).
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</td></tr></table><br>
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<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
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<b>FT_Get_PFR_Kerning</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
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<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> left,
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<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> right,
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<a href="ft2-basic_types.html#FT_Vector">FT_Vector</a> *avector );
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</pre></table><br>
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<table align=center width="87%"><tr><td>
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<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>
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</td></tr></table><br>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>face</b></td><td>
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<p>A handle to the input face.</p>
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</td></tr>
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<tr valign=top><td><b>left</b></td><td>
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<p>Index of the left glyph.</p>
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</td></tr>
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<tr valign=top><td><b>right</b></td><td>
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<p>Index of the right glyph.</p>
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</td></tr>
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</table>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>avector</b></td><td>
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<p>A kerning vector.</p>
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</td></tr>
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</table>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
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<p>FreeType error code. 0 means success.</p>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
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<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>
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<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>
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</td></tr></table>
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</td></tr></table>
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<hr width="75%">
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<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
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<td width="100%"></td>
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<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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<table align=center width="75%"><tr><td>
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<h4><a name="FT_Get_PFR_Advance">FT_Get_PFR_Advance</a></h4>
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<table align=center width="87%"><tr><td>
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Defined in FT_PFR_H (freetype/ftpfr.h).
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</td></tr></table><br>
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<table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
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<b>FT_Get_PFR_Advance</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
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<a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> gindex,
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<a href="ft2-basic_types.html#FT_Pos">FT_Pos</a> *aadvance );
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</pre></table><br>
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<table align=center width="87%"><tr><td>
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<p>Return a given glyph advance, expressed in original metrics units, from a PFR font.</p>
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</td></tr></table><br>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>face</b></td><td>
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<p>A handle to the input face.</p>
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</td></tr>
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<tr valign=top><td><b>gindex</b></td><td>
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<p>The glyph index.</p>
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</td></tr>
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</table>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
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<p></p>
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<table cellpadding=3 border=0>
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<tr valign=top><td><b>aadvance</b></td><td>
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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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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
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<p>FreeType error code. 0 means success.</p>
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</td></tr></table>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
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<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>
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</td></tr></table>
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</td></tr></table>
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<hr width="75%">
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<table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
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<td width="100%"></td>
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<td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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</body>
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</html>
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