antkeeper
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superbuild


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                                <li class="md-nav__item">      <a href="ft2-incremental.html" class="md-nav__link">        Incremental Loading      </a>    </li>  
                                <li class="md-nav__item">      <a href="ft2-truetype_engine.html" class="md-nav__link">        The TrueType Engine      </a>    </li>  
                                <li class="md-nav__item">      <a href="ft2-ot_validation.html" class="md-nav__link">        OpenType Validation      </a>    </li>  
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<p>Validate various TrueTypeGX tables to assure that all offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p><h4>input</h4><table class="fields"><tr><td class="val" id="face">face</td><td class="desc"><p>A handle to the input face.</p></td></tr><tr><td class="val" id="validation_flags">validation_flags</td><td class="desc"><p>A bit field that specifies the tables to be validated. See <code><a href="ft2-gx_validation.html#ft_validate_gxxxx">FT_VALIDATE_GXXXX</a></code> for possible values.</p></td></tr><tr><td class="val" id="table_length">table_length</td><td class="desc"><p>The size of the <code>tables</code> array. Normally, <code><a href="ft2-gx_validation.html#ft_validate_gx_length">FT_VALIDATE_GX_LENGTH</a></code> should be passed.</p></td></tr></table>
<h4>output</h4><table class="fields"><tr><td class="val" id="tables">tables</td><td class="desc"><p>The array where all validated sfnt tables are stored. The array itself must be allocated by a client.</p></td></tr></table>
<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p><h4>note</h4>
<p>This function only works with TrueTypeGX fonts, returning an error otherwise.</p><p>After use, the application should deallocate the buffers pointed to by each <code>tables</code> element, by calling <code><a href="ft2-gx_validation.html#ft_truetypegx_free">FT_TrueTypeGX_Free</a></code>. A <code>NULL</code> value indicates that the table either doesn't exist in the font, the application hasn't asked for validation, or the validator doesn't have the ability to validate the sfnt table.</p><hr>
<h2 id="ft_truetypegx_free">FT_TrueTypeGX_Free<a class="headerlink" href="#ft_truetypegx_free" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>  FT_EXPORT( <span class="keyword">void</span> )  <b>FT_TrueTypeGX_Free</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a>   face,                      <a href="ft2-basic_types.html#ft_bytes">FT_Bytes</a>  table );</code></pre></div>
<p>Free the buffer allocated by TrueTypeGX validator.</p><h4>input</h4><table class="fields"><tr><td class="val" id="face">face</td><td class="desc"><p>A handle to the input face.</p></td></tr><tr><td class="val" id="table">table</td><td class="desc"><p>The pointer to the buffer allocated by <code><a href="ft2-gx_validation.html#ft_truetypegx_validate">FT_TrueTypeGX_Validate</a></code>.</p></td></tr></table>
<h4>note</h4>
<p>This function must be used to free the buffer allocated by <code><a href="ft2-gx_validation.html#ft_truetypegx_validate">FT_TrueTypeGX_Validate</a></code> only.</p><hr>
<h2 id="ft_classickern_validate">FT_ClassicKern_Validate<a class="headerlink" href="#ft_classickern_validate" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>  FT_EXPORT( <a href="ft2-basic_types.html#ft_error">FT_Error</a> )  <b>FT_ClassicKern_Validate</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a>    face,                           <a href="ft2-basic_types.html#ft_uint">FT_UInt</a>    validation_flags,                           <a href="ft2-basic_types.html#ft_bytes">FT_Bytes</a>  *ckern_table );</code></pre></div>
<p>Validate classic (16-bit format) kern table to assure that the offsets and indices are valid. The idea is that a higher-level library that actually does the text layout can access those tables without error checking (which can be quite time consuming).</p><p>The &lsquo;kern&rsquo; table validator in <code><a href="ft2-gx_validation.html#ft_truetypegx_validate">FT_TrueTypeGX_Validate</a></code> deals with both the new 32-bit format and the classic 16-bit format, while FT_ClassicKern_Validate only supports the classic 16-bit format.</p><h4>input</h4><table class="fields"><tr><td class="val" id="face">face</td><td class="desc"><p>A handle to the input face.</p></td></tr><tr><td class="val" id="validation_flags">validation_flags</td><td class="desc"><p>A bit field that specifies the dialect to be validated. See <code><a href="ft2-gx_validation.html#ft_validate_ckernxxx">FT_VALIDATE_CKERNXXX</a></code> for possible values.</p></td></tr></table>
<h4>output</h4><table class="fields"><tr><td class="val" id="ckern_table">ckern_table</td><td class="desc"><p>A pointer to the kern table.</p></td></tr></table>
<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p><h4>note</h4>
<p>After use, the application should deallocate the buffers pointed to by <code>ckern_table</code>, by calling <code><a href="ft2-gx_validation.html#ft_classickern_free">FT_ClassicKern_Free</a></code>. A <code>NULL</code> value indicates that the table doesn't exist in the font.</p><hr>
<h2 id="ft_classickern_free">FT_ClassicKern_Free<a class="headerlink" href="#ft_classickern_free" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>  FT_EXPORT( <span class="keyword">void</span> )  <b>FT_ClassicKern_Free</b>( <a href="ft2-base_interface.html#ft_face">FT_Face</a>   face,                       <a href="ft2-basic_types.html#ft_bytes">FT_Bytes</a>  table );</code></pre></div>
<p>Free the buffer allocated by classic Kern validator.</p><h4>input</h4><table class="fields"><tr><td class="val" id="face">face</td><td class="desc"><p>A handle to the input face.</p></td></tr><tr><td class="val" id="table">table</td><td class="desc"><p>The pointer to the buffer that is allocated by <code><a href="ft2-gx_validation.html#ft_classickern_validate">FT_ClassicKern_Validate</a></code>.</p></td></tr></table>
<h4>note</h4>
<p>This function must be used to free the buffer allocated by <code><a href="ft2-gx_validation.html#ft_classickern_validate">FT_ClassicKern_Validate</a></code> only.</p><hr>
<h2 id="ft_validate_gx_length">FT_VALIDATE_GX_LENGTH<a class="headerlink" href="#ft_validate_gx_length" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>#<span class="keyword">define</span> <b>FT_VALIDATE_GX_LENGTH</b>  ( FT_VALIDATE_GX_LAST_INDEX + 1 )</code></pre></div>
<p>The number of tables checked in this module. Use it as a parameter for the <code>table-length</code> argument of function <code><a href="ft2-gx_validation.html#ft_truetypegx_validate">FT_TrueTypeGX_Validate</a></code>.</p><hr>
<h2 id="ft_validate_gxxxx">FT_VALIDATE_GXXXX<a class="headerlink" href="#ft_validate_gxxxx" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_feat">FT_VALIDATE_feat</a>  FT_VALIDATE_GX_BITFIELD( feat )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_mort">FT_VALIDATE_mort</a>  FT_VALIDATE_GX_BITFIELD( mort )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_morx">FT_VALIDATE_morx</a>  FT_VALIDATE_GX_BITFIELD( morx )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_bsln">FT_VALIDATE_bsln</a>  FT_VALIDATE_GX_BITFIELD( bsln )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_just">FT_VALIDATE_just</a>  FT_VALIDATE_GX_BITFIELD( just )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_kern">FT_VALIDATE_kern</a>  FT_VALIDATE_GX_BITFIELD( kern )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_opbd">FT_VALIDATE_opbd</a>  FT_VALIDATE_GX_BITFIELD( opbd )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_trak">FT_VALIDATE_trak</a>  FT_VALIDATE_GX_BITFIELD( trak )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_prop">FT_VALIDATE_prop</a>  FT_VALIDATE_GX_BITFIELD( prop )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_lcar">FT_VALIDATE_lcar</a>  FT_VALIDATE_GX_BITFIELD( lcar )
#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_gx">FT_VALIDATE_GX</a>  ( <a href="ft2-gx_validation.html#ft_validate_feat">FT_VALIDATE_feat</a> | \                          <a href="ft2-gx_validation.html#ft_validate_mort">FT_VALIDATE_mort</a> | \                          <a href="ft2-gx_validation.html#ft_validate_morx">FT_VALIDATE_morx</a> | \                          <a href="ft2-gx_validation.html#ft_validate_bsln">FT_VALIDATE_bsln</a> | \                          <a href="ft2-gx_validation.html#ft_validate_just">FT_VALIDATE_just</a> | \                          <a href="ft2-gx_validation.html#ft_validate_kern">FT_VALIDATE_kern</a> | \                          <a href="ft2-gx_validation.html#ft_validate_opbd">FT_VALIDATE_opbd</a> | \                          <a href="ft2-gx_validation.html#ft_validate_trak">FT_VALIDATE_trak</a> | \                          <a href="ft2-gx_validation.html#ft_validate_prop">FT_VALIDATE_prop</a> | \                          <a href="ft2-gx_validation.html#ft_validate_lcar">FT_VALIDATE_lcar</a> )</code></pre></div>
<p>A list of bit-field constants used with <code><a href="ft2-gx_validation.html#ft_truetypegx_validate">FT_TrueTypeGX_Validate</a></code> to indicate which TrueTypeGX/AAT Type tables should be validated.</p><h4>values</h4><table class="fields"><tr><td class="val" id="ft_validate_feat">FT_VALIDATE_feat</td><td class="desc"><p>Validate &lsquo;feat&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_mort">FT_VALIDATE_mort</td><td class="desc"><p>Validate &lsquo;mort&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_morx">FT_VALIDATE_morx</td><td class="desc"><p>Validate &lsquo;morx&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_bsln">FT_VALIDATE_bsln</td><td class="desc"><p>Validate &lsquo;bsln&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_just">FT_VALIDATE_just</td><td class="desc"><p>Validate &lsquo;just&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_kern">FT_VALIDATE_kern</td><td class="desc"><p>Validate &lsquo;kern&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_opbd">FT_VALIDATE_opbd</td><td class="desc"><p>Validate &lsquo;opbd&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_trak">FT_VALIDATE_trak</td><td class="desc"><p>Validate &lsquo;trak&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_prop">FT_VALIDATE_prop</td><td class="desc"><p>Validate &lsquo;prop&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_lcar">FT_VALIDATE_lcar</td><td class="desc"><p>Validate &lsquo;lcar&rsquo; table.</p></td></tr><tr><td class="val" id="ft_validate_gx">FT_VALIDATE_GX</td><td class="desc"><p>Validate all TrueTypeGX tables (feat, mort, morx, bsln, just, kern, opbd, trak, prop and lcar).</p></td></tr></table>
<hr>
<h2 id="ft_validate_ckernxxx">FT_VALIDATE_CKERNXXX<a class="headerlink" href="#ft_validate_ckernxxx" title="Permanent link">&para;</a></h2><p>Defined in FT_GX_VALIDATE_H (freetype/ftgxval.h).</p><div class = "codehilite"><pre><code>#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_ms">FT_VALIDATE_MS</a>     ( FT_VALIDATE_GX_START &lt;&lt; 0 )#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_apple">FT_VALIDATE_APPLE</a>  ( FT_VALIDATE_GX_START &lt;&lt; 1 )
#<span class="keyword">define</span> <a href="ft2-gx_validation.html#ft_validate_ckern">FT_VALIDATE_CKERN</a>  ( <a href="ft2-gx_validation.html#ft_validate_ms">FT_VALIDATE_MS</a> | <a href="ft2-gx_validation.html#ft_validate_apple">FT_VALIDATE_APPLE</a> )</code></pre></div>
<p>A list of bit-field constants used with <code><a href="ft2-gx_validation.html#ft_classickern_validate">FT_ClassicKern_Validate</a></code> to indicate the classic kern dialect or dialects. If the selected type doesn't fit, <code><a href="ft2-gx_validation.html#ft_classickern_validate">FT_ClassicKern_Validate</a></code> regards the table as invalid.</p><h4>values</h4><table class="fields"><tr><td class="val" id="ft_validate_ms">FT_VALIDATE_MS</td><td class="desc"><p>Handle the &lsquo;kern&rsquo; table as a classic Microsoft kern table.</p></td></tr><tr><td class="val" id="ft_validate_apple">FT_VALIDATE_APPLE</td><td class="desc"><p>Handle the &lsquo;kern&rsquo; table as a classic Apple kern table.</p></td></tr><tr><td class="val" id="ft_validate_ckern">FT_VALIDATE_CKERN</td><td class="desc"><p>Handle the &lsquo;kern&rsquo; as either classic Apple or Microsoft kern table.</p></td></tr></table>
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