Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/eventhandler_8cpp_source.html
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<h1>examples/Graphics/WS/transparent/eventhandler.cpp</h1><a href="eventhandler_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// This encapsulates both issuing a request for getting pointer events to an asynchronous service provider</span>
<a name="l00015"></a>00015 <span class="comment">// and handling the completed requests.</span>
<a name="l00016"></a>00016 <span class="comment">//</span>
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="transparent_8h.html">transparent.h</a>"</span>
<a name="l00025"></a>00025
<a name="l00030"></a><a class="code" href="class_c_event_handler.html#a0e709c6e924eb9799e69ea10e26824d6">00030</a> <a class="code" href="class_c_event_handler.html">CEventHandler</a>* <a class="code" href="class_c_event_handler.html#a0e709c6e924eb9799e69ea10e26824d6">CEventHandler::NewL</a>(RWsSession& aWs)
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 <a class="code" href="class_c_event_handler.html">CEventHandler</a>* eventHandler = <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_event_handler.html">CEventHandler</a>(aWs);
<a name="l00033"></a>00033 CleanupStack::PushL(eventHandler);
<a name="l00034"></a>00034 eventHandler->ConstructL();
<a name="l00035"></a>00035 CleanupStack::Pop(eventHandler);
<a name="l00036"></a>00036 <span class="keywordflow">return</span> eventHandler;
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038
<a name="l00043"></a>00043 CEventHandler::CEventHandler(RWsSession& aWs) : CActive(CActive::EPriorityStandard),iWs(aWs)
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00050"></a>00050 <span class="keywordtype">void</span> CEventHandler ::ConstructL()
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 CActiveScheduler::Add(<span class="keyword">this</span>);
<a name="l00053"></a>00053 }
<a name="l00054"></a>00054
<a name="l00058"></a><a class="code" href="class_c_event_handler.html#a41b6924a33472d04cee2fe3e90cc6acc">00058</a> <a class="code" href="class_c_event_handler.html#a41b6924a33472d04cee2fe3e90cc6acc">CEventHandler ::~CEventHandler</a> ()
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 Cancel();
<a name="l00061"></a>00061 }
<a name="l00062"></a>00062
<a name="l00067"></a>00067 <span class="keywordtype">void</span> CEventHandler ::DoCancel()
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 iWs.EventReadyCancel();
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00076"></a>00076 <span class="keywordtype">void</span> CEventHandler::RunL()
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 iWs.GetEvent(iWsEvent);
<a name="l00079"></a>00079 TInt eventType = iWsEvent.Type();
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="comment">// Take action for the event that occurred</span>
<a name="l00082"></a>00082 <span class="keywordflow">switch</span> (eventType)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="comment">// Events global within window group</span>
<a name="l00085"></a>00085 <span class="keywordflow">case</span> EEventNull:
<a name="l00086"></a>00086 <span class="keywordflow">break</span>;
<a name="l00087"></a>00087 <span class="keywordflow">case</span> EEventPointer:
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 TPointerEvent& pointerEvent = *iWsEvent.Pointer();
<a name="l00090"></a>00090 <a class="code" href="class_c_event_handler.html#aaebc5150679bb4621e2bc353d6b97131">HandlePointerEvent</a>(pointerEvent);
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <span class="keywordflow">break</span>;
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094 <span class="comment">// Maintain outstanding request</span>
<a name="l00095"></a>00095 <a class="code" href="class_c_event_handler.html#aac65df544e26e3ef06cc087b514c030a">IssueRequest</a>();
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00103"></a><a class="code" href="class_c_event_handler.html#aaebc5150679bb4621e2bc353d6b97131">00103</a> <span class="keywordtype">void</span> <a class="code" href="class_c_event_handler.html#aaebc5150679bb4621e2bc353d6b97131">CEventHandler::HandlePointerEvent</a>(TPointerEvent& aPointerEvent)
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105 <span class="keywordflow">switch</span> (aPointerEvent.iType)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 <span class="keywordflow">case</span> TPointerEvent::EButton1Down:
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 <a class="code" href="class_c_event_handler.html#a72d34b52144f8e5312ec78abe44ee895">InfoMessage</a>(KEventButton1Pressed);
<a name="l00110"></a>00110 <span class="keywordflow">break</span>;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 <span class="keywordflow">case</span> TPointerEvent::EButton2Down:
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 <a class="code" href="class_c_event_handler.html#a72d34b52144f8e5312ec78abe44ee895">InfoMessage</a>(KEventButton2Pressed);
<a name="l00115"></a>00115 <span class="keywordflow">break</span>;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 <span class="keywordflow">case</span> TPointerEvent::EButton3Down:
<a name="l00118"></a>00118 {
<a name="l00119"></a>00119 <a class="code" href="class_c_event_handler.html#a72d34b52144f8e5312ec78abe44ee895">InfoMessage</a>(KEventButton3Pressed);
<a name="l00120"></a>00120 <span class="keywordflow">break</span>;
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 <span class="keywordflow">default</span>:
<a name="l00123"></a>00123 {
<a name="l00124"></a>00124 <span class="keywordflow">break</span>;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00133"></a><a class="code" href="class_c_event_handler.html#aac65df544e26e3ef06cc087b514c030a">00133</a> <span class="keywordtype">void</span> <a class="code" href="class_c_event_handler.html#aac65df544e26e3ef06cc087b514c030a">CEventHandler::IssueRequest</a>()
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 <span class="keywordflow">if</span>(!IsActive())
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 iWs.EventReady(&iStatus);
<a name="l00138"></a>00138 SetActive();
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00146"></a><a class="code" href="class_c_event_handler.html#a72d34b52144f8e5312ec78abe44ee895">00146</a> <span class="keywordtype">void</span> <a class="code" href="class_c_event_handler.html#a72d34b52144f8e5312ec78abe44ee895">CEventHandler::InfoMessage</a>(<span class="keyword">const</span> TDesC& aMsg)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 CEikonEnv *obj = CEikonEnv::Static();
<a name="l00149"></a>00149 obj->InfoMsg(aMsg);
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
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