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  6. <title>FreeType-2.5.0 API Reference</title>
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  34.  
  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-2.5.0 API Reference</h1></center>
  39.  
  40. <center><h1>
  41. Size Management
  42. </h1></center>
  43. <h2>Synopsis</h2>
  44. <table align=center cellspacing=5 cellpadding=0 border=0>
  45. <tr><td></td><td><a href="#FT_New_Size">FT_New_Size</a></td><td></td><td><a href="#FT_Done_Size">FT_Done_Size</a></td><td></td><td><a href="#FT_Activate_Size">FT_Activate_Size</a></td><td></td><td></td></tr>
  46. </table><br><br>
  47.  
  48. <table align=center width="87%"><tr><td>
  49. <p>When creating a new face object (e.g., with <a href="ft2-base_interface.html#FT_New_Face">FT_New_Face</a>), an <a href="ft2-base_interface.html#FT_Size">FT_Size</a> object is automatically created and used to store all pixel-size dependent information, available in the &lsquo;face-&gt;size&rsquo; field.</p>
  50. <p>It is however possible to create more sizes for a given face, mostly in order to manage several character pixel sizes of the same font family and style. See <a href="ft2-sizes_management.html#FT_New_Size">FT_New_Size</a> and <a href="ft2-sizes_management.html#FT_Done_Size">FT_Done_Size</a>.</p>
  51. <p>Note that <a href="ft2-base_interface.html#FT_Set_Pixel_Sizes">FT_Set_Pixel_Sizes</a> and <a href="ft2-base_interface.html#FT_Set_Char_Size">FT_Set_Char_Size</a> only modify the contents of the current &lsquo;active&rsquo; size; you thus need to use <a href="ft2-sizes_management.html#FT_Activate_Size">FT_Activate_Size</a> to change it.</p>
  52. <p>99% of applications won't need the functions provided here, especially if they use the caching sub-system, so be cautious when using these.</p>
  53. </td></tr></table><br>
  54. <table align=center width="75%"><tr><td>
  55. <h4><a name="FT_New_Size">FT_New_Size</a></h4>
  56. <table align=center width="87%"><tr><td>
  57. Defined in FT_SIZES_H (freetype/ftsizes.h).
  58. </td></tr></table><br>
  59. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
  60.  
  61.  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  62.  <b>FT_New_Size</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>   face,
  63.               <a href="ft2-base_interface.html#FT_Size">FT_Size</a>*  size );
  64.  
  65. </pre></table><br>
  66. <table align=center width="87%"><tr><td>
  67. <p>Create a new size object from a given face object.</p>
  68. </td></tr></table><br>
  69. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
  70. <p></p>
  71. <table cellpadding=3 border=0>
  72. <tr valign=top><td><b>face</b></td><td>
  73. <p>A handle to a parent face object.</p>
  74. </td></tr>
  75. </table>
  76. </td></tr></table>
  77. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>output</b></em></td></tr><tr><td>
  78. <p></p>
  79. <table cellpadding=3 border=0>
  80. <tr valign=top><td><b>asize</b></td><td>
  81. <p>A handle to a new size object.</p>
  82. </td></tr>
  83. </table>
  84. </td></tr></table>
  85. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
  86. <p>FreeType error code. 0&nbsp;means success.</p>
  87. </td></tr></table>
  88. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
  89. <p>You need to call <a href="ft2-sizes_management.html#FT_Activate_Size">FT_Activate_Size</a> in order to select the new size for upcoming calls to <a href="ft2-base_interface.html#FT_Set_Pixel_Sizes">FT_Set_Pixel_Sizes</a>, <a href="ft2-base_interface.html#FT_Set_Char_Size">FT_Set_Char_Size</a>, <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a>, <a href="ft2-base_interface.html#FT_Load_Char">FT_Load_Char</a>, etc.</p>
  90. </td></tr></table>
  91. </td></tr></table>
  92. <hr width="75%">
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  94. <td width="100%"></td>
  95. <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
  96.  
  97. <table align=center width="75%"><tr><td>
  98. <h4><a name="FT_Done_Size">FT_Done_Size</a></h4>
  99. <table align=center width="87%"><tr><td>
  100. Defined in FT_SIZES_H (freetype/ftsizes.h).
  101. </td></tr></table><br>
  102. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
  103.  
  104.  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  105.  <b>FT_Done_Size</b>( <a href="ft2-base_interface.html#FT_Size">FT_Size</a>  size );
  106.  
  107. </pre></table><br>
  108. <table align=center width="87%"><tr><td>
  109. <p>Discard a given size object. Note that <a href="ft2-base_interface.html#FT_Done_Face">FT_Done_Face</a> automatically discards all size objects allocated with <a href="ft2-sizes_management.html#FT_New_Size">FT_New_Size</a>.</p>
  110. </td></tr></table><br>
  111. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
  112. <p></p>
  113. <table cellpadding=3 border=0>
  114. <tr valign=top><td><b>size</b></td><td>
  115. <p>A handle to a target size object.</p>
  116. </td></tr>
  117. </table>
  118. </td></tr></table>
  119. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
  120. <p>FreeType error code. 0&nbsp;means success.</p>
  121. </td></tr></table>
  122. </td></tr></table>
  123. <hr width="75%">
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  125. <td width="100%"></td>
  126. <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
  127.  
  128. <table align=center width="75%"><tr><td>
  129. <h4><a name="FT_Activate_Size">FT_Activate_Size</a></h4>
  130. <table align=center width="87%"><tr><td>
  131. Defined in FT_SIZES_H (freetype/ftsizes.h).
  132. </td></tr></table><br>
  133. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
  134.  
  135.  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  136.  <b>FT_Activate_Size</b>( <a href="ft2-base_interface.html#FT_Size">FT_Size</a>  size );
  137.  
  138. </pre></table><br>
  139. <table align=center width="87%"><tr><td>
  140. <p>Even though it is possible to create several size objects for a given face (see <a href="ft2-sizes_management.html#FT_New_Size">FT_New_Size</a> for details), functions like <a href="ft2-base_interface.html#FT_Load_Glyph">FT_Load_Glyph</a> or <a href="ft2-base_interface.html#FT_Load_Char">FT_Load_Char</a> only use the one which has been activated last to determine the &lsquo;current character pixel size&rsquo;.</p>
  141. <p>This function can be used to &lsquo;activate&rsquo; a previously created size object.</p>
  142. </td></tr></table><br>
  143. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
  144. <p></p>
  145. <table cellpadding=3 border=0>
  146. <tr valign=top><td><b>size</b></td><td>
  147. <p>A handle to a target size object.</p>
  148. </td></tr>
  149. </table>
  150. </td></tr></table>
  151. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
  152. <p>FreeType error code. 0&nbsp;means success.</p>
  153. </td></tr></table>
  154. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
  155. <p>If &lsquo;face&rsquo; is the size's parent face object, this function changes the value of &lsquo;face-&gt;size&rsquo; to the input size handle.</p>
  156. </td></tr></table>
  157. </td></tr></table>
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