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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_VALIDATE_OTXXX">FT_VALIDATE_OTXXX</a></td><td></td><td><a href="#FT_OpenType_Validate">FT_OpenType_Validate</a></td><td></td><td><a href="#FT_OpenType_Free">FT_OpenType_Free</a></td></tr>
48 <table align=center width="87%"><tr><td>
49 <p>This section contains the declaration of functions to validate some OpenType tables (BASE, GDEF, GPOS, GSUB, JSTF, MATH).</p>
50 </td></tr></table><br>
51 <table align=center width="75%"><tr><td>
52 <h4><a name="FT_VALIDATE_OTXXX">FT_VALIDATE_OTXXX</a></h4>
53 <table align=center width="87%"><tr><td>
54 Defined in FT_OPENTYPE_VALIDATE_H (freetype/ftotval.h).
55 </td></tr></table><br>
56 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
58 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_BASE</a> 0x0100
59 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GDEF</a> 0x0200
60 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GPOS</a> 0x0400
61 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GSUB</a> 0x0800
62 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_JSTF</a> 0x1000
63 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_MATH</a> 0x2000
65 #define <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_OT</a> <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_BASE</a> | \
66 <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GDEF</a> | \
67 <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GPOS</a> | \
68 <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_GSUB</a> | \
69 <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_JSTF</a> | \
70 <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_MATH</a>
73 <table align=center width="87%"><tr><td>
74 <p>A list of bit-field constants used with <a href="ft2-ot_validation.html#FT_OpenType_Validate">FT_OpenType_Validate</a> to indicate which OpenType tables should be validated.</p>
75 </td></tr></table><br>
76 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>values</b></em></td></tr><tr><td>
78 <table cellpadding=3 border=0>
79 <tr valign=top><td><b>FT_VALIDATE_BASE</b></td><td>
80 <p>Validate BASE table.</p>
82 <tr valign=top><td><b>FT_VALIDATE_GDEF</b></td><td>
83 <p>Validate GDEF table.</p>
85 <tr valign=top><td><b>FT_VALIDATE_GPOS</b></td><td>
86 <p>Validate GPOS table.</p>
88 <tr valign=top><td><b>FT_VALIDATE_GSUB</b></td><td>
89 <p>Validate GSUB table.</p>
91 <tr valign=top><td><b>FT_VALIDATE_JSTF</b></td><td>
92 <p>Validate JSTF table.</p>
94 <tr valign=top><td><b>FT_VALIDATE_MATH</b></td><td>
95 <p>Validate MATH table.</p>
97 <tr valign=top><td><b>FT_VALIDATE_OT</b></td><td>
98 <p>Validate all OpenType tables (BASE, GDEF, GPOS, GSUB, JSTF, MATH).</p>
104 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
105 <td width="100%"></td>
106 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
108 <table align=center width="75%"><tr><td>
109 <h4><a name="FT_OpenType_Validate">FT_OpenType_Validate</a></h4>
110 <table align=center width="87%"><tr><td>
111 Defined in FT_OPENTYPE_VALIDATE_H (freetype/ftotval.h).
112 </td></tr></table><br>
113 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
115 FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
116 <b>FT_OpenType_Validate</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
117 <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a> validation_flags,
118 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *BASE_table,
119 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *GDEF_table,
120 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *GPOS_table,
121 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *GSUB_table,
122 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> *JSTF_table );
125 <table align=center width="87%"><tr><td>
126 <p>Validate various OpenType tables to assure that all offsets and indices are valid. The idea is that a higher-level library which actually does the text layout can access those tables without error checking (which can be quite time consuming).</p>
127 </td></tr></table><br>
128 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
130 <table cellpadding=3 border=0>
131 <tr valign=top><td><b>face</b></td><td>
132 <p>A handle to the input face.</p>
134 <tr valign=top><td><b>validation_flags</b></td><td>
135 <p>A bit field which specifies the tables to be validated. See <a href="ft2-ot_validation.html#FT_VALIDATE_OTXXX">FT_VALIDATE_OTXXX</a> for possible values.</p>
139 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
141 <table cellpadding=3 border=0>
142 <tr valign=top><td><b>BASE_table</b></td><td>
143 <p>A pointer to the BASE table.</p>
145 <tr valign=top><td><b>GDEF_table</b></td><td>
146 <p>A pointer to the GDEF table.</p>
148 <tr valign=top><td><b>GPOS_table</b></td><td>
149 <p>A pointer to the GPOS table.</p>
151 <tr valign=top><td><b>GSUB_table</b></td><td>
152 <p>A pointer to the GSUB table.</p>
154 <tr valign=top><td><b>JSTF_table</b></td><td>
155 <p>A pointer to the JSTF table.</p>
159 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
160 <p>FreeType error code. 0 means success.</p>
162 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
163 <p>This function only works with OpenType fonts, returning an error otherwise.</p>
164 <p>After use, the application should deallocate the five tables with <a href="ft2-ot_validation.html#FT_OpenType_Free">FT_OpenType_Free</a>. A NULL value indicates that the table either doesn't exist in the font, or the application hasn't asked for validation.</p>
168 <table align=center width="75%"><tr><td><font size=-2>[<a href="ft2-index.html">Index</a>]</font></td>
169 <td width="100%"></td>
170 <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
172 <table align=center width="75%"><tr><td>
173 <h4><a name="FT_OpenType_Free">FT_OpenType_Free</a></h4>
174 <table align=center width="87%"><tr><td>
175 Defined in FT_OPENTYPE_VALIDATE_H (freetype/ftotval.h).
176 </td></tr></table><br>
177 <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
179 FT_EXPORT( <span class="keyword">void</span> )
180 <b>FT_OpenType_Free</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a> face,
181 <a href="ft2-basic_types.html#FT_Bytes">FT_Bytes</a> table );
184 <table align=center width="87%"><tr><td>
185 <p>Free the buffer allocated by OpenType validator.</p>
186 </td></tr></table><br>
187 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
189 <table cellpadding=3 border=0>
190 <tr valign=top><td><b>face</b></td><td>
191 <p>A handle to the input face.</p>
193 <tr valign=top><td><b>table</b></td><td>
194 <p>The pointer to the buffer that is allocated by <a href="ft2-ot_validation.html#FT_OpenType_Validate">FT_OpenType_Validate</a>.</p>
198 <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
199 <p>This function must be used to free the buffer allocated by <a href="ft2-ot_validation.html#FT_OpenType_Validate">FT_OpenType_Validate</a> only.</p>
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