ft2-multiple_masters.html

嵌入式freetype库的应用文档包含freetype的简要说明和应用example

<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>num_axis</b></td><td>
<p>The number of axes. The maximum value is 4 for MM; no limit in GX.</p>
</td></tr>
<tr valign=top><td><b>num_designs</b></td><td>
<p>The number of designs; should be normally 2^num_axis for MM fonts. Not meaningful for GX (where every glyph could have a different number of designs).</p>
</td></tr>
<tr valign=top><td><b>num_namedstyles</b></td><td>
<p>The number of named styles; only meaningful for GX which allows certain design coordinates to have a string ID (in the `name' table) associated with them. The font can tell the user that, for example, Weight=1.5 is `Bold'.</p>
</td></tr>
<tr valign=top><td><b>axis</b></td><td>
<p>A table of axis descriptors. GX fonts contain slightly more data than MM.</p>
</td></tr>
<tr valign=top><td><b>namedstyles</b></td><td>
<p>A table of named styles. Only meaningful with GX.</p>
</td></tr>
</table>
</td></tr></table>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Get_Multi_Master">FT_Get_Multi_Master</a></h4>
<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_Multi_Master</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>           face,
                       <a href="ft2-multiple_masters.html#FT_Multi_Master">FT_Multi_Master</a>  *amaster );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Retrieves the Multiple Master descriptor of a given font.</p>
<p>This function can't be used with GX fonts.</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>
<table cellpadding=3>
<tr valign=top><td><b>face</b></td><td>
<p>A handle to the source face.</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>
<table cellpadding=3>
<tr valign=top><td><b>amaster</b></td><td>
<p>The Multiple Masters descriptor.</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>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Get_MM_Var">FT_Get_MM_Var</a></h4>
<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_MM_Var</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>      face,
                 <a href="ft2-multiple_masters.html#FT_MM_Var">FT_MM_Var</a>*  *amaster );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>Retrieves the Multiple Master/GX var descriptor of a given font.</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>
<table cellpadding=3>
<tr valign=top><td><b>face</b></td><td>
<p>A handle to the source face.</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>
<table cellpadding=3>
<tr valign=top><td><b>amaster</b></td><td>
<p>The Multiple Masters descriptor. Allocates a data structure, which the user must free (a single call to FT_FREE will do it).</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>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Set_MM_Design_Coordinates">FT_Set_MM_Design_Coordinates</a></h4>
<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_Set_MM_Design_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>   face,
                                <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>   num_coords,
                                <a href="ft2-basic_types.html#FT_Long">FT_Long</a>*  coords );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>For Multiple Masters fonts, choose an interpolated font design through design coordinates.</p>
<p>This function can't be used with GX fonts.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>face</b></td><td>
<p>A handle to the source face.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>num_coords</b></td><td>
<p>The number of design coordinates (must be equal to the number of axes in the font).</p>
</td></tr>
<tr valign=top><td><b>coords</b></td><td>
<p>An array of design coordinates.</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>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Set_Var_Design_Coordinates">FT_Set_Var_Design_Coordinates</a></h4>
<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_Set_Var_Design_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>    face,
                                 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>    num_coords,
                                 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>*  coords );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>For Multiple Master or GX Var fonts, choose an interpolated font design through design coordinates.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>face</b></td><td>
<p>A handle to the source face.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>num_coords</b></td><td>
<p>The number of design coordinates (must be equal to the number of axes in the font).</p>
</td></tr>
<tr valign=top><td><b>coords</b></td><td>
<p>An array of design coordinates.</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>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Set_MM_Blend_Coordinates">FT_Set_MM_Blend_Coordinates</a></h4>
<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_Set_MM_Blend_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>    face,
                               <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>    num_coords,
                               <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>*  coords );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>For Multiple Masters and GX var fonts, choose an interpolated font design through normalized blend coordinates.</p>
</td></tr></table><br>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>face</b></td><td>
<p>A handle to the source face.</p>
</td></tr>
</table>
</td></tr></table>
<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
<table cellpadding=3>
<tr valign=top><td><b>num_coords</b></td><td>
<p>The number of design coordinates (must be equal to the number of axes in the font).</p>
</td></tr>
<tr valign=top><td><b>coords</b></td><td>
<p>The design coordinates array (each element must be between 0 and 1.0).</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>
</td></tr></table><hr width="75%">
<table align=center width="75%"><tr><td>
<h4><a name="FT_Set_Var_Blend_Coordinates">FT_Set_Var_Blend_Coordinates</a></h4>
<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_Set_Var_Blend_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>    face,
                                <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>    num_coords,
                                <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>*  coords );

</pre></table><br>
<table align=center width="87%"><tr><td>
<p>This is another name of <a href="ft2-multiple_masters.html#FT_Set_MM_Blend_Coordinates">FT_Set_MM_Blend_Coordinates</a>.</p>
</td></tr></table><br>
</td></tr></table><hr width="75%">
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