Skip to content

R
rt-thread

Mozi / rt-thread
与 Fork 源项目一致

Fork自 RT-Thread / rt-thread

通知 0
Star 0
Fork 0
R
rt-thread

体验新版 GitCode，发现更多精彩内容 >>

切换分支/标签
查找文件 普通视图历史永久链接Permalink
ft2-lzw.html 6.1 KB
Newer Older
还_没_想_好's avatar
[gui]Update freetype library to version 2.6.2  
还_没_想_好 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>FreeType-2.6.2 API Reference</title>
<style type="text/css">
  a:link { color: #0000EF; }
  a:visited { color: #51188E; }
  a:hover { color: #FF0000; }

  body { font-family: Verdana, Geneva, Arial, Helvetica, serif;
         color: #000000;
         background: #FFFFFF;
         width: 87%;
         margin: auto; }

  div.section { width: 75%;
                margin: auto; }
  div.section hr { margin: 4ex 0 1ex 0; }
  div.section h4 { background-color: #EEEEFF;
                   font-size: medium;
                   font-style: oblique;
                   font-weight: bold;
                   margin: 3ex 0 1.5ex 9%;
                   padding: 0.3ex 0 0.3ex 1%; }
  div.section p { margin: 1.5ex 0 1.5ex 10%; }
  div.section pre { margin: 3ex 0 3ex 9%;
                    background-color: #D6E8FF;
                    padding: 2ex 0 2ex 1%; }
  div.section table.fields { width: 90%;
                             margin: 1.5ex 0 1.5ex 10%; }
  div.section table.toc { width: 95%;
                          margin: 1.5ex 0 1.5ex 5%; }
  div.timestamp { text-align: center;
                  font-size: 69%;
                  margin: 1.5ex 0 1.5ex 0; }

  h1 { text-align: center; }
  h3 { font-size: medium;
       margin: 4ex 0 1.5ex 0; }

  p { text-align: justify; }

  pre.colored { color: blue; }

  span.keyword { font-family: monospace;
                 text-align: left;
                 white-space: pre;
                 color: darkblue; }

  table.fields td.val { font-weight: bold;
                        text-align: right;
                        width: 30%;
                        vertical-align: baseline;
                        padding: 1ex 1em 1ex 0; }
  table.fields td.desc { vertical-align: baseline;
                         padding: 1ex 0 1ex 1em; }
  table.fields td.desc p:first-child { margin: 0; }
  table.fields td.desc p { margin: 1.5ex 0 0 0; }
  table.index { margin: 6ex auto 6ex auto;
                border: 0;
                border-collapse: separate;
                border-spacing: 1em 0.3ex; }
  table.index tr { padding: 0; }
  table.index td { padding: 0; }
  table.index-toc-link { width: 100%;
                         border: 0;
                         border-spacing: 0;
                         margin: 1ex 0 1ex 0; }
  table.index-toc-link td.left { padding: 0 0.5em 0 0.5em;
                                 font-size: 83%;
                                 text-align: left; }
  table.index-toc-link td.middle { padding: 0 0.5em 0 0.5em;
                                   font-size: 83%;
                                   text-align: center; }
  table.index-toc-link td.right { padding: 0 0.5em 0 0.5em;
                                  font-size: 83%;
                                  text-align: right; }
  table.synopsis { margin: 6ex auto 6ex auto;
                   border: 0;
                   border-collapse: separate;
                   border-spacing: 2em 0.6ex; }
  table.synopsis tr { padding: 0; }
  table.synopsis td { padding: 0; }
  table.toc td.link { width: 30%;
                      text-align: right;
                      vertical-align: baseline;
                      padding: 1ex 1em 1ex 0; }
  table.toc td.desc { vertical-align: baseline;
                      padding: 1ex 0 1ex 1em;
                      text-align: left; }
  table.toc td.desc p:first-child { margin: 0;
                                    text-align: left; }
  table.toc td.desc p { margin: 1.5ex 0 0 0;
                        text-align: left; }

</style>
</head>
<body>

<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table>
<h1>FreeType-2.6.2 API Reference</h1>

<h1 id="lzw">LZW Streams</h1>
<h2>Synopsis</h2>
<table class="synopsis">
<tr><td><a href="#FT_Stream_OpenLZW">FT_Stream_OpenLZW</a></td><td></td><td></td><td></td></tr>
</table>


<p>This section contains the declaration of LZW-specific functions.</p>

<div class="section">
<h3 id="FT_Stream_OpenLZW">FT_Stream_OpenLZW</h3>
<p>Defined in FT_LZW_H (freetype/ftlzw.h).</p>
<pre>
  FT_EXPORT( <a href="ft2-basic_types.html#FT_Error">FT_Error</a> )
  <b>FT_Stream_OpenLZW</b>( <a href="ft2-system_interface.html#FT_Stream">FT_Stream</a>  stream,
                     <a href="ft2-system_interface.html#FT_Stream">FT_Stream</a>  source );
</pre>

<p>Open a new stream to parse LZW-compressed font files. This is mainly used to support the compressed &lsquo;*.pcf.Z&rsquo; fonts that come with XFree86.</p>

<h4>input</h4>
<table class="fields">
<tr><td class="val" id="stream">stream</td><td class="desc">
<p>The target embedding stream.</p>
</td></tr>
<tr><td class="val" id="source">source</td><td class="desc">
<p>The source stream.</p>
</td></tr>
</table>

<h4>return</h4>
<p>FreeType error code. 0&nbsp;means success.</p>

<h4>note</h4>
<p>The source stream must be opened <i>before</i> calling this function.</p>
<p>Calling the internal function &lsquo;FT_Stream_Close&rsquo; on the new stream will <b>not</b> call &lsquo;FT_Stream_Close&rsquo; on the source stream. None of the stream objects will be released to the heap.</p>
<p>The stream implementation is very basic and resets the decompression process each time seeking backwards is needed within the stream</p>
<p>In certain builds of the library, LZW compression recognition is automatically handled when calling <a href="ft2-base_interface.html#FT_New_Face">FT_New_Face</a> or <a href="ft2-base_interface.html#FT_Open_Face">FT_Open_Face</a>. This means that if no font driver is capable of handling the raw compressed file, the library will try to open a LZW stream from it and re-open the face with it.</p>
<p>This function may return &lsquo;FT_Err_Unimplemented_Feature&rsquo; if your build of FreeType was not compiled with LZW support.</p>

<hr>
<table class="index-toc-link"><tr><td class="left">[<a href="ft2-index.html">Index</a>]</td><td class="middle">[<a href="#">Top</a>]</td><td class="right">[<a href="ft2-toc.html">TOC</a>]</td></tr></table></div>

</body>
</html>