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35 <table align=center><tr><td><font size=-1>[<a href="ft2-index.html">Index</a>]</font></td>
36 <td width="100%"></td>
37 <td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
38 <center><h1>FreeType-2.4.9 API Reference</h1></center>
44 <table align=center cellspacing=5 cellpadding=0 border=0>
45 <tr><td></td><td><a href="#FT_MM_Axis">FT_MM_Axis</a></td><td></td><td><a href="#FT_Get_MM_Var">FT_Get_MM_Var</a></td></tr>
46 <tr><td></td><td><a href="#FT_Multi_Master">FT_Multi_Master</a></td><td></td><td><a href="#FT_Set_MM_Design_Coordinates">FT_Set_MM_Design_Coordinates</a></td></tr>
47 <tr><td></td><td><a href="#FT_Var_Axis">FT_Var_Axis</a></td><td></td><td><a href="#FT_Set_Var_Design_Coordinates">FT_Set_Var_Design_Coordinates</a></td></tr>
48 <tr><td></td><td><a href="#FT_Var_Named_Style">FT_Var_Named_Style</a></td><td></td><td><a href="#FT_Set_MM_Blend_Coordinates">FT_Set_MM_Blend_Coordinates</a></td></tr>
49 <tr><td></td><td><a href="#FT_MM_Var">FT_MM_Var</a></td><td></td><td><a href="#FT_Set_Var_Blend_Coordinates">FT_Set_Var_Blend_Coordinates</a></td></tr>
50 <tr><td></td><td><a href="#FT_Get_Multi_Master">FT_Get_Multi_Master</a></td><td></td><td></td></tr>
53 <table align=center width="87%"><tr><td>
54 <p>The following types and functions are used to manage Multiple Master fonts, i.e., the selection of specific design instances by setting design axis coordinates.</p>
55 <p>George Williams has extended this interface to make it work with both Type 1 Multiple Masters fonts and GX distortable (var) fonts. Some of these routines only work with MM fonts, others will work with both types. They are similar enough that a consistent interface makes sense.</p>
56 </td></tr></table><br>
57 <table align=center width="75%"><tr><td>
58 <h4><a name="FT_MM_Axis">FT_MM_Axis</a></h4>
59 <table align=center width="87%"><tr><td>
60 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
61 </td></tr></table><br>
62 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
64 <span class="keyword">typedef</span> <span class="keyword">struct</span> FT_MM_Axis_
66 <a href="ft2-basic_types.html#FT_String">FT_String</a>* name;
67 <a href="ft2-basic_types.html#FT_Long">FT_Long</a> minimum;
68 <a href="ft2-basic_types.html#FT_Long">FT_Long</a> maximum;
73 <table align=center width="87%"><tr><td>
74 <p>A simple structure used to model a given axis in design space for Multiple Masters fonts.</p>
75 <p>This structure can't be used for GX var fonts.</p>
76 </td></tr></table><br>
77 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
79 <table cellpadding=3 border=0>
80 <tr valign=top><td><b>name</b></td><td>
81 <p>The axis's name.</p>
83 <tr valign=top><td><b>minimum</b></td><td>
84 <p>The axis's minimum design coordinate.</p>
86 <tr valign=top><td><b>maximum</b></td><td>
87 <p>The axis's maximum design coordinate.</p>
93 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
94 <td width="100%"></td>
95 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
97 <table align=center width="75%"><tr><td>
98 <h4><a name="FT_Multi_Master">FT_Multi_Master</a></h4>
99 <table align=center width="87%"><tr><td>
100 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
101 </td></tr></table><br>
102 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
104 <span class="keyword">typedef</span> <span class="keyword">struct</span> FT_Multi_Master_
106 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_axis;
107 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_designs;
108 <a href="ft2-multiple_masters.html#FT_MM_Axis">FT_MM_Axis</a> axis[T1_MAX_MM_AXIS];
110 } <b>FT_Multi_Master</b>;
113 <table align=center width="87%"><tr><td>
114 <p>A structure used to model the axes and space of a Multiple Masters font.</p>
115 <p>This structure can't be used for GX var fonts.</p>
116 </td></tr></table><br>
117 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
119 <table cellpadding=3 border=0>
120 <tr valign=top><td><b>num_axis</b></td><td>
121 <p>Number of axes. Cannot exceed 4.</p>
123 <tr valign=top><td><b>num_designs</b></td><td>
124 <p>Number of designs; should be normally 2^num_axis even though the Type 1 specification strangely allows for intermediate designs to be present. This number cannot exceed 16.</p>
126 <tr valign=top><td><b>axis</b></td><td>
127 <p>A table of axis descriptors.</p>
133 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
134 <td width="100%"></td>
135 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
137 <table align=center width="75%"><tr><td>
138 <h4><a name="FT_Var_Axis">FT_Var_Axis</a></h4>
139 <table align=center width="87%"><tr><td>
140 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
141 </td></tr></table><br>
142 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
144 <span class="keyword">typedef</span> <span class="keyword">struct</span> FT_Var_Axis_
146 <a href="ft2-basic_types.html#FT_String">FT_String</a>* name;
148 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> minimum;
149 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> def;
150 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a> maximum;
152 <a href="ft2-basic_types.html#FT_ULong">FT_ULong</a> tag;
153 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> strid;
155 } <b>FT_Var_Axis</b>;
158 <table align=center width="87%"><tr><td>
159 <p>A simple structure used to model a given axis in design space for Multiple Masters and GX var fonts.</p>
160 </td></tr></table><br>
161 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
163 <table cellpadding=3 border=0>
164 <tr valign=top><td><b>name</b></td><td>
165 <p>The axis's name. Not always meaningful for GX.</p>
167 <tr valign=top><td><b>minimum</b></td><td>
168 <p>The axis's minimum design coordinate.</p>
170 <tr valign=top><td><b>def</b></td><td>
171 <p>The axis's default design coordinate. FreeType computes meaningful default values for MM; it is then an integer value, not in 16.16 format.</p>
173 <tr valign=top><td><b>maximum</b></td><td>
174 <p>The axis's maximum design coordinate.</p>
176 <tr valign=top><td><b>tag</b></td><td>
177 <p>The axis's tag (the GX equivalent to ‘name’). FreeType provides default values for MM if possible.</p>
179 <tr valign=top><td><b>strid</b></td><td>
180 <p>The entry in ‘name’ table (another GX version of ‘name’). Not meaningful for MM.</p>
186 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
187 <td width="100%"></td>
188 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
190 <table align=center width="75%"><tr><td>
191 <h4><a name="FT_Var_Named_Style">FT_Var_Named_Style</a></h4>
192 <table align=center width="87%"><tr><td>
193 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
194 </td></tr></table><br>
195 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
197 <span class="keyword">typedef</span> <span class="keyword">struct</span> FT_Var_Named_Style_
199 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>* coords;
200 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> strid;
202 } <b>FT_Var_Named_Style</b>;
205 <table align=center width="87%"><tr><td>
206 <p>A simple structure used to model a named style in a GX var font.</p>
207 <p>This structure can't be used for MM fonts.</p>
208 </td></tr></table><br>
209 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
211 <table cellpadding=3 border=0>
212 <tr valign=top><td><b>coords</b></td><td>
213 <p>The design coordinates for this style. This is an array with one entry for each axis.</p>
215 <tr valign=top><td><b>strid</b></td><td>
216 <p>The entry in ‘name’ table identifying this style.</p>
222 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
223 <td width="100%"></td>
224 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
226 <table align=center width="75%"><tr><td>
227 <h4><a name="FT_MM_Var">FT_MM_Var</a></h4>
228 <table align=center width="87%"><tr><td>
229 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
230 </td></tr></table><br>
231 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
233 <span class="keyword">typedef</span> <span class="keyword">struct</span> FT_MM_Var_
235 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_axis;
236 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_designs;
237 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_namedstyles;
238 <a href="ft2-multiple_masters.html#FT_Var_Axis">FT_Var_Axis</a>* axis;
239 <a href="ft2-multiple_masters.html#FT_Var_Named_Style">FT_Var_Named_Style</a>* namedstyle;
244 <table align=center width="87%"><tr><td>
245 <p>A structure used to model the axes and space of a Multiple Masters or GX var distortable font.</p>
246 <p>Some fields are specific to one format and not to the other.</p>
247 </td></tr></table><br>
248 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>fields</b></em></td></tr><tr><td>
250 <table cellpadding=3 border=0>
251 <tr valign=top><td><b>num_axis</b></td><td>
252 <p>The number of axes. The maximum value is 4 for MM; no limit in GX.</p>
254 <tr valign=top><td><b>num_designs</b></td><td>
255 <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>
257 <tr valign=top><td><b>num_namedstyles</b></td><td>
258 <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>
260 <tr valign=top><td><b>axis</b></td><td>
261 <p>A table of axis descriptors. GX fonts contain slightly more data than MM.</p>
263 <tr valign=top><td><b>namedstyles</b></td><td>
264 <p>A table of named styles. Only meaningful with GX.</p>
270 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
271 <td width="100%"></td>
272 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
274 <table align=center width="75%"><tr><td>
275 <h4><a name="FT_Get_Multi_Master">FT_Get_Multi_Master</a></h4>
276 <table align=center width="87%"><tr><td>
277 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
278 </td></tr></table><br>
279 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
281 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
282 <b>FT_Get_Multi_Master</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
283 <a href="ft2-multiple_masters.html#FT_Multi_Master">FT_Multi_Master</a> *amaster );
286 <table align=center width="87%"><tr><td>
287 <p>Retrieve the Multiple Master descriptor of a given font.</p>
288 <p>This function can't be used with GX fonts.</p>
289 </td></tr></table><br>
290 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
292 <table cellpadding=3 border=0>
293 <tr valign=top><td><b>face</b></td><td>
294 <p>A handle to the source face.</p>
298 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
300 <table cellpadding=3 border=0>
301 <tr valign=top><td><b>amaster</b></td><td>
302 <p>The Multiple Masters descriptor.</p>
306 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
307 <p>FreeType error code. 0 means success.</p>
311 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
312 <td width="100%"></td>
313 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
315 <table align=center width="75%"><tr><td>
316 <h4><a name="FT_Get_MM_Var">FT_Get_MM_Var</a></h4>
317 <table align=center width="87%"><tr><td>
318 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
319 </td></tr></table><br>
320 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
322 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
323 <b>FT_Get_MM_Var</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
324 <a href="ft2-multiple_masters.html#FT_MM_Var">FT_MM_Var</a>* *amaster );
327 <table align=center width="87%"><tr><td>
328 <p>Retrieve the Multiple Master/GX var descriptor of a given font.</p>
329 </td></tr></table><br>
330 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
332 <table cellpadding=3 border=0>
333 <tr valign=top><td><b>face</b></td><td>
334 <p>A handle to the source face.</p>
338 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
340 <table cellpadding=3 border=0>
341 <tr valign=top><td><b>amaster</b></td><td>
342 <p>The Multiple Masters/GX var descriptor. Allocates a data structure, which the user must free (a single call to FT_FREE will do it).</p>
346 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
347 <p>FreeType error code. 0 means success.</p>
351 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
352 <td width="100%"></td>
353 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
355 <table align=center width="75%"><tr><td>
356 <h4><a name="FT_Set_MM_Design_Coordinates">FT_Set_MM_Design_Coordinates</a></h4>
357 <table align=center width="87%"><tr><td>
358 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
359 </td></tr></table><br>
360 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
362 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
363 <b>FT_Set_MM_Design_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
364 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_coords,
365 <a href="ft2-basic_types.html#FT_Long">FT_Long</a>* coords );
368 <table align=center width="87%"><tr><td>
369 <p>For Multiple Masters fonts, choose an interpolated font design through design coordinates.</p>
370 <p>This function can't be used with GX fonts.</p>
371 </td></tr></table><br>
372 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
374 <table cellpadding=3 border=0>
375 <tr valign=top><td><b>face</b></td><td>
376 <p>A handle to the source face.</p>
380 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
382 <table cellpadding=3 border=0>
383 <tr valign=top><td><b>num_coords</b></td><td>
384 <p>The number of design coordinates (must be equal to the number of axes in the font).</p>
386 <tr valign=top><td><b>coords</b></td><td>
387 <p>An array of design coordinates.</p>
391 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
392 <p>FreeType error code. 0 means success.</p>
396 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
397 <td width="100%"></td>
398 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
400 <table align=center width="75%"><tr><td>
401 <h4><a name="FT_Set_Var_Design_Coordinates">FT_Set_Var_Design_Coordinates</a></h4>
402 <table align=center width="87%"><tr><td>
403 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
404 </td></tr></table><br>
405 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
407 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
408 <b>FT_Set_Var_Design_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
409 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_coords,
410 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>* coords );
413 <table align=center width="87%"><tr><td>
414 <p>For Multiple Master or GX Var fonts, choose an interpolated font design through design coordinates.</p>
415 </td></tr></table><br>
416 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
418 <table cellpadding=3 border=0>
419 <tr valign=top><td><b>face</b></td><td>
420 <p>A handle to the source face.</p>
424 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
426 <table cellpadding=3 border=0>
427 <tr valign=top><td><b>num_coords</b></td><td>
428 <p>The number of design coordinates (must be equal to the number of axes in the font).</p>
430 <tr valign=top><td><b>coords</b></td><td>
431 <p>An array of design coordinates.</p>
435 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
436 <p>FreeType error code. 0 means success.</p>
440 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
441 <td width="100%"></td>
442 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
444 <table align=center width="75%"><tr><td>
445 <h4><a name="FT_Set_MM_Blend_Coordinates">FT_Set_MM_Blend_Coordinates</a></h4>
446 <table align=center width="87%"><tr><td>
447 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
448 </td></tr></table><br>
449 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
451 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
452 <b>FT_Set_MM_Blend_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
453 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_coords,
454 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>* coords );
457 <table align=center width="87%"><tr><td>
458 <p>For Multiple Masters and GX var fonts, choose an interpolated font design through normalized blend coordinates.</p>
459 </td></tr></table><br>
460 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>inout</b></em></td></tr><tr><td>
462 <table cellpadding=3 border=0>
463 <tr valign=top><td><b>face</b></td><td>
464 <p>A handle to the source face.</p>
468 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
470 <table cellpadding=3 border=0>
471 <tr valign=top><td><b>num_coords</b></td><td>
472 <p>The number of design coordinates (must be equal to the number of axes in the font).</p>
474 <tr valign=top><td><b>coords</b></td><td>
475 <p>The design coordinates array (each element must be between 0 and 1.0).</p>
479 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
480 <p>FreeType error code. 0 means success.</p>
484 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
485 <td width="100%"></td>
486 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
488 <table align=center width="75%"><tr><td>
489 <h4><a name="FT_Set_Var_Blend_Coordinates">FT_Set_Var_Blend_Coordinates</a></h4>
490 <table align=center width="87%"><tr><td>
491 Defined in FT_MULTIPLE_MASTERS_H (freetype/ftmm.h).
492 </td></tr></table><br>
493 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
495 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
496 <b>FT_Set_Var_Blend_Coordinates</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
497 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> num_coords,
498 <a href="ft2-basic_types.html#FT_Fixed">FT_Fixed</a>* coords );
501 <table align=center width="87%"><tr><td>
502 <p>This is another name of <a href="ft2-multiple_masters.html#FT_Set_MM_Blend_Coordinates">FT_Set_MM_Blend_Coordinates</a>.</p>
503 </td></tr></table><br>
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