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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-08 12:31:36 -0600 |
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| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-11-08 12:31:36 -0600 |
| commit | d796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch) | |
| tree | 6e3dcca4f77e20ec8966c666aac7c35bd4704053 /doc/html/qimageformat.html | |
| download | tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip | |
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
Diffstat (limited to 'doc/html/qimageformat.html')
| -rw-r--r-- | doc/html/qimageformat.html | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/doc/html/qimageformat.html b/doc/html/qimageformat.html new file mode 100644 index 000000000..0cb57c851 --- /dev/null +++ b/doc/html/qimageformat.html @@ -0,0 +1,87 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qasyncimageio.cpp:530 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>TQImageFormat Class</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQImageFormat Class Reference</h1> + +<p>The TQImageFormat class is an incremental image decoder for a specific image format. +<a href="#details">More...</a> +<p><tt>#include <<a href="qasyncimageio-h.html">qasyncimageio.h</a>></tt> +<p><a href="qimageformat-members.html">List of all member functions.</a> +<h2>Public Members</h2> +<ul> +<li class=fn>virtual int <a href="#decode"><b>decode</b></a> ( TQImage & img, TQImageConsumer * consumer, const uchar * buffer, int length ) = 0</li> +</ul> +<hr><a name="details"></a><h2>Detailed Description</h2> + + +The TQImageFormat class is an incremental image decoder for a specific image format. +<p> + + +<p> By making a derived class of <a href="qimageformattype.html">TQImageFormatType</a>, which in turn +creates objects that are a subclass of TQImageFormat, you can add +support for more incremental image formats, allowing such formats +to be sources for a <a href="qmovie.html">TQMovie</a> or for the first frame of the image +stream to be loaded as a <a href="qimage.html">TQImage</a> or <a href="qpixmap.html">TQPixmap</a>. +<p> Your new subclass must reimplement the <a href="#decode">decode</a>() function in order +to process your new format. +<p> New TQImageFormat objects are generated by new TQImageFormatType +factories. +<p>See also <a href="graphics.html">Graphics Classes</a>, <a href="images.html">Image Processing Classes</a>, and <a href="multimedia.html">Multimedia Classes</a>. + +<hr><h2>Member Function Documentation</h2> +<h3 class=fn>int <a name="decode"></a>TQImageFormat::decode ( <a href="qimage.html">TQImage</a> & img, <a href="qimageconsumer.html">TQImageConsumer</a> * consumer, const uchar * buffer, int length )<tt> [pure virtual]</tt> +</h3> + +<p> New subclasses must reimplement this method. +<p> It should decode some or all of the bytes from <em>buffer</em> into <em>img</em>, calling the methods of <em>consumer</em> as the decoding proceeds +to inform that consumer of changes to the image. The length of the +data is given in <em>length</em>. The consumer may be 0, in which case +the function should just process the data into <em>img</em> without +telling any consumer about the changes. Note that the decoder must +store enough state to be able to continue in subsequent calls to +this method - this is the essence of the incremental image +loading. +<p> The function should return without processing all the data if it +reaches the end of a frame in the input. +<p> The function must return the number of bytes it has processed. + +<!-- eof --> +<hr><p> +This file is part of the <a href="index.html">TQt toolkit</a>. +Copyright © 1995-2007 +<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>TQt 3.3.8</div> +</table></div></address></body> +</html> |