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<h1>/home/paul/dev/cegui/release_tmp/release_tmp/src/loaders/SILLYPNGImageContext.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/***********************************************************************</span>
<a name="l00002"></a>00002 <span class="comment">    filename:   SILLYPNGImageContext.cpp</span>
<a name="l00003"></a>00003 <span class="comment">    created:    11 Jun 2006</span>
<a name="l00004"></a>00004 <span class="comment">    author:     Olivier Delannoy </span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">    purpose:    Definition of PNGImageContext methods  </span>
<a name="l00007"></a>00007 <span class="comment">*************************************************************************/</span>
<a name="l00008"></a>00008 <span class="comment">/***************************************************************************</span>
<a name="l00009"></a>00009 <span class="comment"> *   Copyright (C) 2004 - 2006 Paul D Turner &amp; The CEGUI Development Team</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> *   Permission is hereby granted, free of charge, to any person obtaining</span>
<a name="l00012"></a>00012 <span class="comment"> *   a copy of this software and associated documentation files (the</span>
<a name="l00013"></a>00013 <span class="comment"> *   "Software"), to deal in the Software without restriction, including</span>
<a name="l00014"></a>00014 <span class="comment"> *   without limitation the rights to use, copy, modify, merge, publish,</span>
<a name="l00015"></a>00015 <span class="comment"> *   distribute, sublicense, and/or sell copies of the Software, and to</span>
<a name="l00016"></a>00016 <span class="comment"> *   permit persons to whom the Software is furnished to do so, subject to</span>
<a name="l00017"></a>00017 <span class="comment"> *   the following conditions:</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> *   The above copyright notice and this permission notice shall be</span>
<a name="l00020"></a>00020 <span class="comment"> *   included in all copies or substantial portions of the Software.</span>
<a name="l00021"></a>00021 <span class="comment"> *</span>
<a name="l00022"></a>00022 <span class="comment"> *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span>
<a name="l00023"></a>00023 <span class="comment"> *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span>
<a name="l00024"></a>00024 <span class="comment"> *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.</span>
<a name="l00025"></a>00025 <span class="comment"> *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR</span>
<a name="l00026"></a>00026 <span class="comment"> *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,</span>
<a name="l00027"></a>00027 <span class="comment"> *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR</span>
<a name="l00028"></a>00028 <span class="comment"> *   OTHER DEALINGS IN THE SOFTWARE.</span>
<a name="l00029"></a>00029 <span class="comment"> ***************************************************************************/</span>
<a name="l00030"></a>00030 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#include &lt;config.h&gt;</span>
<a name="l00032"></a>00032 <span class="preprocessor">#endif</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "loaders/SILLYPNGImageContext.h"</span>
<a name="l00035"></a>00035 
<a name="l00036"></a>00036 <span class="preprocessor">#ifndef SILLY_OPT_INLINE</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#define inline </span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#include "loaders/SILLYPNGImageContext.icpp"</span>
<a name="l00039"></a>00039 <span class="preprocessor">#undef inline</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#include &lt;string.h&gt;</span>
<a name="l00042"></a>00042 
<a name="l00043"></a>00043 <span class="comment">// Start section of namespace SILLY</span>
<a name="l00044"></a>00044 <span class="keyword">namespace </span>SILLY
<a name="l00045"></a>00045 {
<a name="l00046"></a><a class="code" href="a00122.html#f0250cadc8e2bb1ced78237e5d08b335">00046</a> <span class="keywordtype">int</span> <a class="code" href="a00122.html#f0250cadc8e2bb1ced78237e5d08b335">PNGImageContext::read</a>(png_bytep data, png_size_t length)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048     <span class="comment">//printf("PNG Read: %d bytes offset: %d, size %d\n", </span>
<a name="l00049"></a>00049     <span class="comment">//       length, d_offset, d_data-&gt;getSize());</span>
<a name="l00050"></a>00050     
<a name="l00051"></a>00051     <span class="keywordflow">if</span> (d_offset + length &gt; d_data-&gt;<a class="code" href="a00113.html#4dad7813125c98765472a1229c8e619b">getSize</a>())
<a name="l00052"></a>00052         <span class="keywordflow">return</span> -1;
<a name="l00053"></a>00053     memcpy(data, d_data-&gt;<a class="code" href="a00113.html#6934c681732d2bd45de2488da4cfcc18">getDataPtr</a>() + d_offset, length);
<a name="l00054"></a>00054     d_offset += length;
<a name="l00055"></a>00055     <span class="keywordflow">return</span> length;
<a name="l00056"></a>00056 }
<a name="l00057"></a>00057 
<a name="l00058"></a>00058   
<a name="l00059"></a><a class="code" href="a00122.html#e18f2aab7f640698ac2e7f5136ae16cf">00059</a> <a class="code" href="a00122.html#e18f2aab7f640698ac2e7f5136ae16cf">PNGImageContext::PNGImageContext</a>(<a class="code" href="a00113.html">DataSource</a>* data)
<a name="l00060"></a>00060     : <a class="code" href="a00116.html">ImageContext</a>(0,0), d_offset(0), d_data(data), d_png_ptr(0), d_info_ptr(0)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062     
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 
<a name="l00065"></a><a class="code" href="a00122.html#0b92a605ef906f2a4c5177d58729ff8d">00065</a> <a class="code" href="a00122.html#0b92a605ef906f2a4c5177d58729ff8d">PNGImageContext::~PNGImageContext</a>()
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067     <span class="keywordflow">if</span> (d_info_ptr)
<a name="l00068"></a>00068         png_destroy_read_struct(&amp;d_png_ptr, &amp;d_info_ptr, 0);    
<a name="l00069"></a>00069     <span class="keywordflow">if</span> (d_png_ptr)
<a name="l00070"></a>00070         png_destroy_read_struct(&amp;d_png_ptr, 0, 0);    
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 
<a name="l00073"></a>00073 
<a name="l00074"></a>00074 <span class="keywordtype">void</span> PNGImageContext::setImageSize()
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076     <a class="code" href="a00116.html#22b02fe8123a5dbe6bb55bd1b8dbd488">setWidth</a>(png_get_image_width(d_png_ptr, d_info_ptr));
<a name="l00077"></a>00077     <a class="code" href="a00116.html#8bc8c024faf6383c341736e66ee7ad8d">setHeight</a>(png_get_image_height(d_png_ptr, d_info_ptr));
<a name="l00078"></a>00078     
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080 
<a name="l00081"></a>00081 
<a name="l00082"></a>00082 } <span class="comment">// End section of namespace SILLY </span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Nov 5 14:38:42 2006 for Simple Image Loading LibrarY by&nbsp;
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