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authorscuri <scuri>2008-10-17 06:10:33 +0000
committerscuri <scuri>2008-10-17 06:10:33 +0000
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+<!doctype HTML PUBLIC "-//IETF//DTD HTML//EN">
+<html>
+
+<head>
+<meta http-equiv="Content-Language" content="en-us">
+<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+<title>Other</title>
+<link rel="stylesheet" type="text/css" href="../../style.css">
+</head>
+
+<body>
+
+<h2 align="center">System</h2>
+<pre class="function"><span class="mainFunction">char*&nbsp;<a name="cdVersion">cdVersion</a>(void); [in C]</span>
+
+cd.Version() -&gt; (version: string) [in Lua]</pre>
+
+ <p>Returns the current version number of the library. The string with the
+ version number has a format &quot;<font>major.minor.build</font>&quot;.
+ For instance, the string &quot;2.1.3&quot; has number 2 as the main (major) version
+ number, 1 as the secondary (minor) version number, and 3 as the build number.
+ The major version number represents a change in the structure or behavior of
+ functions; the minor version number represents one or more new drivers and
+ functions added to the library; and the build version number represents one or
+ more corrected bugs.</p>
+
+<pre class="function"><span class="mainFunction">char* cdVersionDate(void); [in C]
+</span>
+cd.VersionDate() -&gt; (versiondate: string) [in Lua]</pre>
+<p>Returns the release date of the current version of the library.</p>
+<pre class="function"><span class="mainFunction">int cdVersionNumber(void); [in C]
+</span>
+cd.VersionNumber() -&gt; (version: number) [in Lua]</pre>
+<p>Returns the current version number of the library.</p>
+<pre class="function">[in C]
+<span class="mainFunction">CD_NAME</span> &quot;CD - Canvas Draw&quot;
+<span class="mainFunction">CD_DESCRIPTION</span> &quot;A 2D Graphics Library&quot;
+<span class="mainFunction">CD_COPYRIGHT</span> &quot;Copyright (C) 1994-2007 Tecgraf/PUC-Rio and PETROBRAS S/A&quot;
+<span class="mainFunction">CD_VERSION</span> &quot;5.0.0&quot;
+<span class="mainFunction">CD_VERSION_DATE</span> &quot;2007/04/09&quot;
+<span class="mainFunction">CD_VERSION_NUMBER</span> 500000
+
+[in Lua]
+cd._NAME
+cd._DESCRIPTION
+cd._COPYRIGHT
+cd._VERSION
+cd._VERSION_DATE
+cd._VERSION_NUMBER</pre>
+
+ <p>Usefull definitions. They have the same value returned by <b>cdVersion</b>*
+ functions.</p>
+
+<hr>
+<h2 align="center">Metafile Interpretation</h2>
+<pre class="function"><span class="mainFunction">int&nbsp;cdCanvasPlay(cdCanvas* canvas, cdContext* ctx, int xmin, int xmax, int ymin, int ymax, void *data); [in C]</span>
+
+canvas:Play(ctx, xmin, xmax, ymin, ymax: number, data: string) -&gt; (status: number) [in Lua]</pre>
+
+ <p>Interprets the graphical contents (primitives and attributes) in a given
+ driver and calls equivalent functions of the CD library using the given
+ canvas. The primitives are drawn inside the region defined by the given
+ limits. If <font>limits are 0 (xmin</font>, <font>xmax</font>,
+ <font>ymin</font> and <font>ymax)</font> the primitives will be drawn with their coordinates having the original
+ values in the file. </p>
+
+ <p>Only some drivers implement this function:</p>
+
+
+ <ul>
+ <li><a href="../drv/clipbd.html"><b>
+ CD_CLIPBOARD</b></a> = Clipboard, <font>data</font> is
+ ignored. </li>
+ <li><a href="../drv/wmf.html"><b>
+ CD_WMF</b></a> = Windows Metafile, <font>data</font> is
+ a <b>char*</b> for the string ''<i>filename</i>''. Works only in
+ the MS Windows system.</li>
+ <li><a href="../drv/emf.html"><b>
+ CD_EMF</b></a> = Windows Enhanced Metafile, <font>data</font>
+ is a <b>char*</b> for the string ''<i>filename</i>''. Works only in
+ the MS Windows system.</li>
+ <li><a href="../drv/cgm.html"><b>
+ CD_CGM</b></a> = Computer Graphics Metafile ISO, <font>
+ data</font> is a <b>char*</b> for the string ''<i>filename</i>''.</li>
+ <li><a href="../drv/mf.html"><b>
+ CD_METAFILE</b></a> = CD Metafile, <font>data</font>
+ is a <b>char*</b> for the string ''<i>filename</i>''.</li>
+ <li><a href="../drv/picture.html"><b>
+ CD_PICTURE</b></a> = CD Picture, <font>data</font>
+ is a <strong>cdCanvas</strong><b>*</b> of the Picture canvas.</li>
+ </ul>
+
+<pre class="function"><span class="mainFunction">int&nbsp;cdContextRegisterCallback(cdContext *ctx, int cb, int(*func)(cdCanvas* canvas, ...)); [in C]</span>
+
+cd.ContextRegisterCallback(ctx, cb: number, func: function) -&gt; (status: number) [in Lua]</pre>
+
+ <p>Used to customize the behavior of the&nbsp; <b><font>Play</font></b>
+ function. If you register a known callback function, it will be called during
+ the processing loop of <font>cdPlay</font>.</p>
+ <p>The callback should return <font>CD_CONTINUE</font>, if it
+ returns <font>CD_ABORT</font>, the <font>cdPlay</font>
+ function is aborted. The callback identifiers of a given driver must be in the
+ header file relative to that driver, with prefix &quot;<font>CD_XXYYYCB</font>&quot;,
+ where <font>XX</font> identifies that driver and
+ <font>YYY</font> identifies the callback name.</p>
+ <p>There is a default callback common to all implementations of
+ <font>cdPlay</font>, <b>CD_SIZECB</b>. Its definition
+ is:</p>
+<pre>int cdResizeCB(cdCanvas* canvas, int width, int height, double mm_width, double mm_height)</pre>
+<p>It returns the size of the image in the
+ file before any function in the CD library is called, so that you can call the&nbsp;
+ <font>cdPlay</font> function without an active canvas and
+ create the canvas inside the callback. It works as a&nbsp; <b>
+ <font>cdCanvasGetSize</font></b> function.</p>
+
+
+</body>
+
+</html> \ No newline at end of file