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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>ImageHandler.cpp Source File</title><link href="style.css" rel="stylesheet" type="text/css"></head><table border="0" width="100%" height="8" bgcolor="#eeeeee"><tr> <td width="100%" height="1"><b><font size="2" color="#000000" face="Arial, Helvetica, sans-serif"><strong><a name=Top></a>S60 5th Edition SDK v0.9 </strong></font></b><br><i>Example Applications Guide</i></td></tr> </table><!-- Generated by Doxygen 1.4.5 --><div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="annotated.html"><span>Classes</span></a></li> <li id="current"><a href="files.html"><span>Files</span></a></li> </ul></div><h1>ImageHandler.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">* ==============================================================================</span><a name="l00003"></a>00003 <span class="comment">* Name : ImageHandler.cpp</span><a name="l00004"></a>00004 <span class="comment">* Part of : OcrExample</span><a name="l00005"></a>00005 <span class="comment">* Interface :</span><a name="l00006"></a>00006 <span class="comment">* Description :</span><a name="l00007"></a>00007 <span class="comment">* Version :</span><a name="l00008"></a>00008 <span class="comment">*</span><a name="l00009"></a>00009 <span class="comment">* Copyright (c) 2006 Nokia Corporation.</span><a name="l00010"></a>00010 <span class="comment">* This material, including documentation and any related</span><a name="l00011"></a>00011 <span class="comment">* computer programs, is protected by copyright controlled by</span><a name="l00012"></a>00012 <span class="comment">* Nokia Corporation.</span><a name="l00013"></a>00013 <span class="comment">* ==============================================================================</span><a name="l00014"></a>00014 <span class="comment">*/</span><a name="l00015"></a>00015 <a name="l00016"></a>00016 <span class="preprocessor">#include "ImageHandler.h"</span><a name="l00017"></a>00017 <a name="l00018"></a>00018 <span class="keyword">using namespace </span>NOCRUtils;<a name="l00019"></a>00019 <a name="l00020"></a>00020 <span class="comment">// =============================================================================</span><a name="l00021"></a>00021 <span class="comment">// CImageHandler, a utility class for loading images.</span><a name="l00022"></a>00022 <span class="comment">// =============================================================================</span><a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="comment">// ============================= MEMBER FUNCTIONS ===============================</span><a name="l00025"></a>00025 <a name="l00026"></a>00026 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00027"></a>00027 <span class="comment">// CImageHandler::CImageHandler</span><a name="l00028"></a>00028 <span class="comment">// C++ constructor can NOT contain any code, that</span><a name="l00029"></a>00029 <span class="comment">// might leave.</span><a name="l00030"></a>00030 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00031"></a>00031 <span class="comment">//</span><a name="l00032"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#815169d6c61c63ee4cf8527b1e5acc35">00032</a> CImageHandler::CImageHandler( CFbsBitmap* aBitmap,<a name="l00033"></a>00033 CFbsBitmap* aScaledBitmap,<a name="l00034"></a>00034 RFs& aFs,<a name="l00035"></a>00035 <a class="code" href="class_n_o_c_r_utils_1_1_m_image_handler_callback.html">MImageHandlerCallback</a>& aCallback )<a name="l00036"></a>00036 : CActive(CActive::EPriorityStandard)<a name="l00037"></a>00037 , iDecoder(NULL)<a name="l00038"></a>00038 , iScaler(NULL)<a name="l00039"></a>00039 , iCallback(aCallback)<a name="l00040"></a>00040 , iBitmap(aBitmap)<a name="l00041"></a>00041 , iScaledBitmap(aScaledBitmap)<a name="l00042"></a>00042 , iFs(aFs)<a name="l00043"></a>00043 , iSize(0,0)<a name="l00044"></a>00044 {<a name="l00045"></a>00045 }<a name="l00046"></a>00046 <a name="l00047"></a>00047 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00048"></a>00048 <span class="comment">// CImageHandler::ConstructL</span><a name="l00049"></a>00049 <span class="comment">// Symbian 2nd phase constructor can leave.</span><a name="l00050"></a>00050 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00051"></a>00051 <span class="comment">//</span><a name="l00052"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#9ce34ba0b947863222da3c63d0481044">00052</a> <span class="keywordtype">void</span> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#9ce34ba0b947863222da3c63d0481044">CImageHandler::ConstructL</a>()<a name="l00053"></a>00053 {<a name="l00054"></a>00054 CActiveScheduler::Add(<span class="keyword">this</span>);<a name="l00055"></a>00055 }<a name="l00056"></a>00056 <a name="l00057"></a>00057 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00058"></a>00058 <span class="comment">// CImageHandler::NewLC</span><a name="l00059"></a>00059 <span class="comment">// Two-phased constructor.</span><a name="l00060"></a>00060 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00061"></a>00061 <span class="comment">//</span><a name="l00062"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#2313eabc359b0dee4c27ae32dec4dec4">00062</a> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html">CImageHandler</a>* <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#2313eabc359b0dee4c27ae32dec4dec4">CImageHandler::NewL</a>(CFbsBitmap* aBitmap,<a name="l00063"></a>00063 CFbsBitmap* aScaledBitmap,<a name="l00064"></a>00064 RFs& aFs,<a name="l00065"></a>00065 <a class="code" href="class_n_o_c_r_utils_1_1_m_image_handler_callback.html">MImageHandlerCallback</a>& aCallback)<a name="l00066"></a>00066 {<a name="l00067"></a>00067 <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html">CImageHandler</a>* <span class="keyword">self</span> = <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#9e4c968db340c0490421cfefa6aaaade">NewLC</a>(aBitmap, aScaledBitmap, aFs, aCallback);<a name="l00068"></a>00068 CleanupStack::Pop();<a name="l00069"></a>00069 <span class="keywordflow">return</span> <span class="keyword">self</span>;<a name="l00070"></a>00070 }<a name="l00071"></a>00071 <a name="l00072"></a>00072 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00073"></a>00073 <span class="comment">// CImageHandler::NewLC</span><a name="l00074"></a>00074 <span class="comment">// Two-phased constructor.</span><a name="l00075"></a>00075 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00076"></a>00076 <span class="comment">//</span><a name="l00077"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#9e4c968db340c0490421cfefa6aaaade">00077</a> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html">CImageHandler</a>* <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#9e4c968db340c0490421cfefa6aaaade">CImageHandler::NewLC</a>(CFbsBitmap* aBitmap,<a name="l00078"></a>00078 CFbsBitmap *aScaledBitmap,<a name="l00079"></a>00079 RFs& aFs,<a name="l00080"></a>00080 <a class="code" href="class_n_o_c_r_utils_1_1_m_image_handler_callback.html">MImageHandlerCallback</a>& aCallback)<a name="l00081"></a>00081 {<a name="l00082"></a>00082 <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html">CImageHandler</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#815169d6c61c63ee4cf8527b1e5acc35">CImageHandler</a>(aBitmap,<a name="l00083"></a>00083 aScaledBitmap,<a name="l00084"></a>00084 aFs,<a name="l00085"></a>00085 aCallback);<a name="l00086"></a>00086 CleanupStack::PushL( <span class="keyword">self</span> );<a name="l00087"></a>00087 <span class="keyword">self</span>->ConstructL();<a name="l00088"></a>00088 <a name="l00089"></a>00089 <span class="keywordflow">return</span> <span class="keyword">self</span>;<a name="l00090"></a>00090 }<a name="l00091"></a>00091 <a name="l00092"></a>00092 <span class="comment">// Destructor</span><a name="l00093"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#1698e035c395d0d88c5ed91117db00bb">00093</a> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#1698e035c395d0d88c5ed91117db00bb">CImageHandler::~CImageHandler</a>()<a name="l00094"></a>00094 {<a name="l00095"></a>00095 <span class="keyword">delete</span> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#edfc84ea4c64b9bf5bdf7e83a1ff352c">iDecoder</a>;<a name="l00096"></a>00096 <span class="keyword">delete</span> <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#96d535106f5c2bbd3e511dc8b235cc53">iScaler</a>;<a name="l00097"></a>00097 }<a name="l00098"></a>00098 <a name="l00099"></a>00099 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00100"></a>00100 <span class="comment">// CImageHandler::SetBitmapL</span><a name="l00101"></a>00101 <span class="comment">// Set the destination bitmap.</span><a name="l00102"></a>00102 <span class="comment">// -----------------------------------------------------------------------------</span><a name="l00103"></a>00103 <span class="comment">//</span><a name="l00104"></a><a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#d7610b4879d5654655a53251b19a8cbd">00104</a> TBool <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#d7610b4879d5654655a53251b19a8cbd">CImageHandler::SetBitmapL</a>( CFbsBitmap *aBitmap )<a name="l00105"></a>00105 {<a name="l00106"></a>00106 <span class="keywordflow">if</span> ( IsActive() )<a name="l00107"></a>00107 {<a name="l00108"></a>00108 <span class="keywordflow">return</span> EFalse; <span class="comment">// If active, fail.</span><a name="l00109"></a>00109 }<a name="l00110"></a>00110 <span class="comment">// else</span><a name="l00111"></a>00111 <a class="code" href="class_n_o_c_r_utils_1_1_c_image_handler.html#26276106331cba77cd405dd3ad3d4975">iBitmap</a> = aBitmap;<a name="l00112"></a>00112 <span class="keywordflow">return</span> ETrue;<a name="l00113"></a>00113 }<a name="l00114"></a>00114 <a name="l00115"></a>00115 <span class="comment">// -----------------------------------------------------------------------------</span>⌨️ 快捷键说明
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