/modules/freetype2/docs/reference/ft2-gasp_table.html

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  37. <td><font size=-1>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
    38. 

  38. <center><h1>FreeType-2.4.3 API Reference</h1></center>
    39. 

  39. 

  40. <center><h1>
    41. 

  41. Gasp Table
    42. 

  42. </h1></center>
    43. 

  43. <h2>Synopsis</h2>
    44. 

  44. <table align=center cellspacing=5 cellpadding=0 border=0>
    45. 

  45. <tr><td></td><td><a href="#FT_GASP_XXX">FT_GASP_XXX</a></td><td></td><td><a href="#FT_Get_Gasp">FT_Get_Gasp</a></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
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  46. </table><br><br>
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  47. 

  48. <table align=center width="87%"><tr><td>
    49. 

  49. <p>The function <a href="ft2-gasp_table.html#FT_Get_Gasp">FT_Get_Gasp</a> can be used to query a TrueType or OpenType font for specific entries in its &lsquo;gasp&rsquo; table, if any. This is mainly useful when implementing native TrueType hinting with the bytecode interpreter to duplicate the Windows text rendering results.</p>
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  50. </td></tr></table><br>
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  51. <table align=center width="75%"><tr><td>
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  52. <h4><a name="FT_GASP_XXX">FT_GASP_XXX</a></h4>
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  53. <table align=center width="87%"><tr><td>
    54. 

  54. Defined in FT_GASP_H (freetype/ftgasp.h).
    55. 

  55. </td></tr></table><br>
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  56. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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  57. 

  58. #define <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_NO_TABLE</a>               -1
    59. 

  59. #define <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_DO_GRIDFIT</a>           0x01
    60. 

  60. #define <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_DO_GRAY</a>              0x02
    61. 

  61. #define <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_SYMMETRIC_SMOOTHING</a>  0x08
    62. 

  62. #define <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_SYMMETRIC_GRIDFIT</a>    0x10
    63. 

  63. 

  64. </pre></table><br>
    65. 

  65. <table align=center width="87%"><tr><td>
    66. 

  66. <p>A list of values and/or bit-flags returned by the <a href="ft2-gasp_table.html#FT_Get_Gasp">FT_Get_Gasp</a> function.</p>
    67. 

  67. </td></tr></table><br>
    68. 

  68. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>values</b></em></td></tr><tr><td>
    69. 

  69. <p></p>
    70. 

  70. <table cellpadding=3 border=0>
    71. 

  71. <tr valign=top><td><b>FT_GASP_NO_TABLE</b></td><td>
    72. 

  72. <p>This special value means that there is no GASP table in this face. It is up to the client to decide what to do.</p>
    73. 

  73. </td></tr>
    74. 

  74. <tr valign=top><td><b>FT_GASP_DO_GRIDFIT</b></td><td>
    75. 

  75. <p>Grid-fitting and hinting should be performed at the specified ppem. This <b>really</b> means TrueType bytecode interpretation.</p>
    76. 

  76. </td></tr>
    77. 

  77. <tr valign=top><td><b>FT_GASP_DO_GRAY</b></td><td>
    78. 

  78. <p>Anti-aliased rendering should be performed at the specified ppem.</p>
    79. 

  79. </td></tr>
    80. 

  80. <tr valign=top><td colspan=0><b>FT_GASP_SYMMETRIC_SMOOTHING</b></td></tr>
    81. 

  81. <tr valign=top><td></td><td>
    82. 

  82. <p>Smoothing along multiple axes must be used with ClearType.</p>
    83. 

  83. </td></tr>
    84. 

  84. <tr valign=top><td colspan=0><b>FT_GASP_SYMMETRIC_GRIDFIT</b></td></tr>
    85. 

  85. <tr valign=top><td></td><td>
    86. 

  86. <p>Grid-fitting must be used with ClearType's symmetric smoothing.</p>
    87. 

  87. </td></tr>
    88. 

  88. </table>
    89. 

  89. </td></tr></table>
    90. 

  90. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
    91. 

  91. <p>&lsquo;ClearType&rsquo; is Microsoft's implementation of LCD rendering, partly protected by patents.</p>
    92. 

  92. </td></tr></table>
    93. 

  93. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>since</b></em></td></tr><tr><td>
    94. 

  94. <p>2.3.0</p>
    95. 

  95. </td></tr></table>
    96. 

  96. </td></tr></table>
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  100. <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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  101. 

  102. <table align=center width="75%"><tr><td>
    103. 

  103. <h4><a name="FT_Get_Gasp">FT_Get_Gasp</a></h4>
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  104. <table align=center width="87%"><tr><td>
    105. 

  105. Defined in FT_GASP_H (freetype/ftgasp.h).
    106. 

  106. </td></tr></table><br>
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  107. <table align=center width="87%"><tr bgcolor="#D6E8FF"><td><pre>
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  108. 

  109.   FT_EXPORT( <a href="ft2-basic_types.html#FT_Int">FT_Int</a> )
    110. 

  110.   <b>FT_Get_Gasp</b>( <a href="ft2-base_interface.html#FT_Face">FT_Face</a>  face,
    111. 

  111.                <a href="ft2-basic_types.html#FT_UInt">FT_UInt</a>  ppem );
    112. 

  112. 

  113. </pre></table><br>
    114. 

  114. <table align=center width="87%"><tr><td>
    115. 

  115. <p>Read the &lsquo;gasp&rsquo; table from a TrueType or OpenType font file and return the entry corresponding to a given character pixel size.</p>
    116. 

  116. </td></tr></table><br>
    117. 

  117. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>input</b></em></td></tr><tr><td>
    118. 

  118. <p></p>
    119. 

  119. <table cellpadding=3 border=0>
    120. 

  120. <tr valign=top><td><b>face</b></td><td>
    121. 

  121. <p>The source face handle.</p>
    122. 

  122. </td></tr>
    123. 

  123. <tr valign=top><td><b>ppem</b></td><td>
    124. 

  124. <p>The vertical character pixel size.</p>
    125. 

  125. </td></tr>
    126. 

  126. </table>
    127. 

  127. </td></tr></table>
    128. 

  128. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>return</b></em></td></tr><tr><td>
    129. 

  129. <p>Bit flags (see <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_XXX</a>), or <a href="ft2-gasp_table.html#FT_GASP_XXX">FT_GASP_NO_TABLE</a> if there is no &lsquo;gasp&rsquo; table in the face.</p>
    130. 

  130. </td></tr></table>
    131. 

  131. <table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>since</b></em></td></tr><tr><td>
    132. 

  132. <p>2.3.0</p>
    133. 

  133. </td></tr></table>
    134. 

  134. </td></tr></table>
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  138. <td><font size=-2>[<a href="ft2-toc.html">TOC</a>]</font></td></tr></table>
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