Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_backed_up_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Graphics/WS/BackedUp/BackedUp.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2005-2009 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">//</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="preprocessor">#include <w32std.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include "Base.h"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "BackedUp.h"</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KString1,<span class="stringliteral">"1"</span>);
<a name="l00021"></a>00021 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KString2,<span class="stringliteral">"2"</span>);
<a name="l00022"></a>00022 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KString3,<span class="stringliteral">"3"</span>);
<a name="l00023"></a>00023 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KString4,<span class="stringliteral">"4"</span>);
<a name="l00024"></a>00024 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KString5,<span class="stringliteral">"5"</span>);
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keyword">enum</span> TBackedUpPanic
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028 EConnectPanicRedrawToBackedUpWindow,
<a name="l00029"></a>00029 };
<a name="l00030"></a>00030
<a name="l00031"></a>00031
<a name="l00033"></a>00033 <span class="comment">// CNumberedWindow implementation</span>
<a name="l00035"></a>00035 <span class="comment"></span>
<a name="l00036"></a>00036 <span class="comment">/****************************************************************************\</span>
<a name="l00037"></a>00037 <span class="comment">| Function: Constructor/Destructor for CNumberedWindow</span>
<a name="l00038"></a>00038 <span class="comment">| Input: aClient Client application that owns the window</span>
<a name="l00039"></a>00039 <span class="comment">\****************************************************************************/</span>
<a name="l00040"></a>00040 CNumberedWindow::CNumberedWindow (CWsClient* aClient)
<a name="l00041"></a>00041 : CWindow (aClient), iOldPos(0,0)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="comment">// iNumber is displayed on front of window.</span>
<a name="l00044"></a>00044 iNumber = iCount;
<a name="l00045"></a>00045 iCount++;
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048
<a name="l00049"></a>00049 CNumberedWindow::~CNumberedWindow ()
<a name="l00050"></a>00050 {
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="comment">/****************************************************************************\</span>
<a name="l00055"></a>00055 <span class="comment">| Function: CNumberedWindow::Draw</span>
<a name="l00056"></a>00056 <span class="comment">| Purpose: Redraws the contents of CNumberedWindow within a given</span>
<a name="l00057"></a>00057 <span class="comment">| rectangle. CNumberedWindow displays a number in the window.</span>
<a name="l00058"></a>00058 <span class="comment">| Input: aRect Rectangle that needs redrawing</span>
<a name="l00059"></a>00059 <span class="comment">| Output: None</span>
<a name="l00060"></a>00060 <span class="comment">\****************************************************************************/</span>
<a name="l00061"></a>00061 <span class="keywordtype">void</span> CNumberedWindow::Draw(<span class="keyword">const</span> TRect& aRect)
<a name="l00062"></a>00062 {
<a name="l00063"></a>00063 <span class="keyword">const</span> TBufC<1> strings[5] = { *&KString1,
<a name="l00064"></a>00064 *&KString2,
<a name="l00065"></a>00065 *&KString3,
<a name="l00066"></a>00066 *&KString4,
<a name="l00067"></a>00067 *&KString5
<a name="l00068"></a>00068 };
<a name="l00069"></a>00069
<a name="l00070"></a>00070 CWindowGc* gc=SystemGc(); <span class="comment">// get a graphics context</span>
<a name="l00071"></a>00071 gc->SetClippingRect(aRect); <span class="comment">// clip outside the redraw area</span>
<a name="l00072"></a>00072 gc->Clear(aRect); <span class="comment">// clear the redraw area</span>
<a name="l00073"></a>00073 TSize size=iWindow.Size();
<a name="l00074"></a>00074 TInt height=size.iHeight; <span class="comment">// Need window height to calculate vertical text offset</span>
<a name="l00075"></a>00075 TInt ascent = Font()->AscentInPixels();
<a name="l00076"></a>00076 TInt descent = Font()->DescentInPixels();
<a name="l00077"></a>00077 TInt offset = (height + (ascent + descent)) / 2; <span class="comment">// Calculate vertical text offset</span>
<a name="l00078"></a>00078 gc->SetPenColor(TRgb(0,0,0)); <span class="comment">// Set pen to black</span>
<a name="l00079"></a>00079 gc->UseFont(Font());
<a name="l00080"></a>00080 gc->DrawText(strings[iNumber], TRect(TPoint(0,0), size), offset, CGraphicsContext::ECenter);
<a name="l00081"></a>00081 gc->DiscardFont();
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="comment">/****************************************************************************\</span>
<a name="l00085"></a>00085 <span class="comment">| Function: CNumberedWindow::HandlePointerEvent</span>
<a name="l00086"></a>00086 <span class="comment">| Purpose: Handles pointer events for CNumberedWindow.</span>
<a name="l00087"></a>00087 <span class="comment">| Input: aPointerEvent The pointer event</span>
<a name="l00088"></a>00088 <span class="comment">| Output: None</span>
<a name="l00089"></a>00089 <span class="comment">\****************************************************************************/</span>
<a name="l00090"></a>00090 <span class="keywordtype">void</span> CNumberedWindow::HandlePointerEvent (TPointerEvent& aPointerEvent)
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="keywordflow">switch</span> (aPointerEvent.iType)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 <span class="keywordflow">case</span> TPointerEvent::EDrag:
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 TPoint point = aPointerEvent.iParentPosition;
<a name="l00097"></a>00097 TPoint distToMove = point - iOldPos;
<a name="l00098"></a>00098 TPoint position = Window().Position();
<a name="l00099"></a>00099 Window().SetPosition (position + distToMove);
<a name="l00100"></a>00100 iOldPos = point;
<a name="l00101"></a>00101 <span class="keywordflow">break</span>;
<a name="l00102"></a>00102 }
<a name="l00103"></a>00103 <span class="keywordflow">case</span> TPointerEvent::EButton1Down:
<a name="l00104"></a>00104 {
<a name="l00105"></a>00105 <span class="comment">// Request drag events </span>
<a name="l00106"></a>00106 Window().PointerFilter (EPointerFilterDrag, 0);
<a name="l00107"></a>00107 Window().SetOrdinalPosition (0);
<a name="l00108"></a>00108 iOldPos = aPointerEvent.iParentPosition;
<a name="l00109"></a>00109 <span class="keywordflow">break</span>;
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111 <span class="keywordflow">case</span> TPointerEvent::EButton1Up:
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113 <span class="comment">// Cancel the request for drag events.</span>
<a name="l00114"></a>00114 Window().PointerFilter (EPointerFilterDrag, EPointerFilterDrag);
<a name="l00115"></a>00115 <span class="keywordflow">break</span>;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 <span class="keywordflow">default</span>:
<a name="l00118"></a>00118 <span class="keywordflow">break</span>;
<a name="l00119"></a>00119 }
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122
<a name="l00124"></a>00124 <span class="comment">// CMainWindow implementation</span>
<a name="l00126"></a>00126 <span class="comment"></span>
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">/****************************************************************************\</span>
<a name="l00129"></a>00129 <span class="comment">| Function: Constructor/Destructor for CMainWindow</span>
<a name="l00130"></a>00130 <span class="comment">| Input: aClient Client application that owns the window</span>
<a name="l00131"></a>00131 <span class="comment">\****************************************************************************/</span>
<a name="l00132"></a>00132 CMainWindow::CMainWindow (CWsClient* aClient)
<a name="l00133"></a>00133 : CBackedUpWindow (aClient)
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137
<a name="l00138"></a>00138 CMainWindow::~CMainWindow ()
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 iWindow.Close();
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="comment">/****************************************************************************\</span>
<a name="l00144"></a>00144 <span class="comment">| Function: CMainWindow::Draw</span>
<a name="l00145"></a>00145 <span class="comment">| Purpose: Redraws the contents of CMainWindow within a given</span>
<a name="l00146"></a>00146 <span class="comment">| rectangle.</span>
<a name="l00147"></a>00147 <span class="comment">| Input: aRect Rectangle that needs redrawing</span>
<a name="l00148"></a>00148 <span class="comment">| Output: None</span>
<a name="l00149"></a>00149 <span class="comment">\****************************************************************************/</span>
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordtype">void</span> CMainWindow::Draw(<span class="keyword">const</span> TRect& <span class="comment">/*aRect*/</span>)
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KPanicMsg,<span class="stringliteral">"BACKEDUP"</span>);
<a name="l00154"></a>00154 User::Panic(KPanicMsg,EConnectPanicRedrawToBackedUpWindow);
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordtype">void</span> CMainWindow::HandlePointerMoveBufferReady ()
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 TPoint pnts[KPointerMoveBufferSize];
<a name="l00160"></a>00160 TPtr8 ptr((TUint8 *)&pnts,<span class="keyword">sizeof</span>(pnts));
<a name="l00161"></a>00161 TInt numPnts=Window().RetrievePointerMoveBuffer(ptr);
<a name="l00162"></a>00162 CWindowGc* gc=SystemGc();
<a name="l00163"></a>00163 gc->Activate(Window());
<a name="l00164"></a>00164 <span class="keywordflow">for</span>(TInt index=0;index<numPnts;index++) gc->DrawLineTo(pnts[index]);
<a name="l00165"></a>00165 gc->Deactivate();
<a name="l00166"></a>00166 }
<a name="l00167"></a>00167
<a name="l00168"></a>00168 <span class="comment">/****************************************************************************\</span>
<a name="l00169"></a>00169 <span class="comment">| Function: CMainWindow::HandlePointerEvent</span>
<a name="l00170"></a>00170 <span class="comment">| Purpose: Handles pointer events for CMainWindow.</span>
<a name="l00171"></a>00171 <span class="comment">| Input: aPointerEvent The pointer event!</span>
<a name="l00172"></a>00172 <span class="comment">| Output: None</span>
<a name="l00173"></a>00173 <span class="comment">\****************************************************************************/</span>
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keywordtype">void</span> CMainWindow::HandlePointerEvent (TPointerEvent& aPointerEvent)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">switch</span> (aPointerEvent.iType)
<a name="l00178"></a>00178 {
<a name="l00179"></a>00179 <span class="keywordflow">case</span> TPointerEvent::EButton1Down:
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 Window().SetShadowDisabled(EFalse);
<a name="l00182"></a>00182 Window().EnablePointerMoveBuffer();
<a name="l00183"></a>00183 CWindowGc* gc = SystemGc();
<a name="l00184"></a>00184 gc->Activate(Window());
<a name="l00185"></a>00185 gc->MoveTo(aPointerEvent.iPosition);
<a name="l00186"></a>00186 gc->Deactivate();
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188 <span class="keywordflow">default</span>:
<a name="l00189"></a>00189 <span class="keywordflow">break</span>;
<a name="l00190"></a>00190 }
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192
<a name="l00193"></a>00193
<a name="l00195"></a>00195 <span class="comment">// CExampleWsClient implementation</span>
<a name="l00197"></a>00197 <span class="comment"></span>
<a name="l00198"></a>00198 CExampleWsClient* CExampleWsClient::NewL(<span class="keyword">const</span> TRect& aRect)
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200 <span class="comment">// make new client</span>
<a name="l00201"></a>00201 CExampleWsClient* client=<span class="keyword">new</span> (ELeave) CExampleWsClient(aRect);
<a name="l00202"></a>00202 CleanupStack::PushL(client); <span class="comment">// push, just in case</span>
<a name="l00203"></a>00203 client->ConstructL(); <span class="comment">// construct and run</span>
<a name="l00204"></a>00204 CleanupStack::Pop();
<a name="l00205"></a>00205 <span class="keywordflow">return</span> client;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="comment">/****************************************************************************\</span>
<a name="l00209"></a>00209 <span class="comment">| Function: Constructor/Destructor for CExampleWsClient</span>
<a name="l00210"></a>00210 <span class="comment">| Destructor deletes everything that was allocated by</span>
<a name="l00211"></a>00211 <span class="comment">| ConstructMainWindowL()</span>
<a name="l00212"></a>00212 <span class="comment">\****************************************************************************/</span>
<a name="l00213"></a>00213
<a name="l00214"></a>00214 CExampleWsClient::CExampleWsClient(<span class="keyword">const</span> TRect& aRect)
<a name="l00215"></a>00215 :iRect(aRect)
<a name="l00216"></a>00216 {
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 CExampleWsClient::~CExampleWsClient ()
<a name="l00220"></a>00220 {
<a name="l00221"></a>00221 <span class="keyword">delete</span> iMainWindow;
<a name="l00222"></a>00222 <span class="keyword">delete</span> iWindow1;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">/****************************************************************************\</span>
<a name="l00227"></a>00227 <span class="comment">| Function: CExampleWsClient::ConstructMainWindowL()</span>
<a name="l00228"></a>00228 <span class="comment">| Called by base class's ConstructL</span>
<a name="l00229"></a>00229 <span class="comment">| Purpose: Allocates and creates all the windows owned by this client</span>
<a name="l00230"></a>00230 <span class="comment">| (See list of windows in CExampleWsCLient declaration).</span>
<a name="l00231"></a>00231 <span class="comment">\****************************************************************************/</span>
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="keywordtype">void</span> CExampleWsClient::ConstructMainWindowL()
<a name="l00234"></a>00234 {
<a name="l00235"></a>00235 <span class="comment">// Resources allocated in this function are freed in the CExampleWsClient destructor</span>
<a name="l00236"></a>00236
<a name="l00237"></a>00237 iMainWindow=<span class="keyword">new</span> (ELeave) CMainWindow(<span class="keyword">this</span>);
<a name="l00238"></a>00238 iMainWindow->ConstructL(iRect);
<a name="l00239"></a>00239 iWindow1 = <span class="keyword">new</span> (ELeave) CNumberedWindow (<span class="keyword">this</span>);
<a name="l00240"></a>00240 iWindow1->ConstructL (TRect (TPoint (100, 100), TSize (100, 100)), TRgb (100, 100, 100),
<a name="l00241"></a>00241 iMainWindow);
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="comment">/****************************************************************************\</span>
<a name="l00246"></a>00246 <span class="comment">| Function: CExampleWsClient::RunL()</span>
<a name="l00247"></a>00247 <span class="comment">| Called by active scheduler when an even occurs</span>
<a name="l00248"></a>00248 <span class="comment">| Purpose: Processes events according to their type</span>
<a name="l00249"></a>00249 <span class="comment">| For key events: calls HandleKeyEventL() (global to client)</span>
<a name="l00250"></a>00250 <span class="comment">| For pointer event: calls HandlePointerEvent() for window</span>
<a name="l00251"></a>00251 <span class="comment">| event occurred in.</span>
<a name="l00252"></a>00252 <span class="comment">\****************************************************************************/</span>
<a name="l00253"></a>00253 <span class="keywordtype">void</span> CExampleWsClient::RunL()
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255 <span class="comment">// get the event</span>
<a name="l00256"></a>00256 iWs.GetEvent(iWsEvent);
<a name="l00257"></a>00257 TInt eventType=iWsEvent.Type();
<a name="l00258"></a>00258 <span class="comment">// take action on it</span>
<a name="l00259"></a>00259 <span class="keywordflow">switch</span> (eventType)
<a name="l00260"></a>00260 {
<a name="l00261"></a>00261 <span class="comment">// events global within window group</span>
<a name="l00262"></a>00262 <span class="keywordflow">case</span> EEventNull:
<a name="l00263"></a>00263 <span class="keywordflow">break</span>;
<a name="l00264"></a>00264 <span class="keywordflow">case</span> EEventKey:
<a name="l00265"></a>00265 {
<a name="l00266"></a>00266 TKeyEvent& keyEvent=*iWsEvent.Key(); <span class="comment">// get key event</span>
<a name="l00267"></a>00267 HandleKeyEventL (keyEvent);
<a name="l00268"></a>00268 <span class="keywordflow">break</span>;
<a name="l00269"></a>00269 }
<a name="l00270"></a>00270 <span class="keywordflow">case</span> EEventKeyUp:
<a name="l00271"></a>00271 <span class="keywordflow">case</span> EEventModifiersChanged:
<a name="l00272"></a>00272 <span class="keywordflow">case</span> EEventKeyDown:
<a name="l00273"></a>00273 <span class="keywordflow">case</span> EEventFocusLost:
<a name="l00274"></a>00274 <span class="keywordflow">case</span> EEventFocusGained:
<a name="l00275"></a>00275 <span class="keywordflow">case</span> EEventSwitchOn:
<a name="l00276"></a>00276 <span class="keywordflow">case</span> EEventPassword:
<a name="l00277"></a>00277 <span class="keywordflow">case</span> EEventWindowGroupsChanged:
<a name="l00278"></a>00278 <span class="keywordflow">case</span> EEventErrorMessage:
<a name="l00279"></a>00279 <span class="keywordflow">break</span>;
<a name="l00280"></a>00280 <span class="comment">// events local to specific windows</span>
<a name="l00281"></a>00281 <span class="keywordflow">case</span> EEventPointer:
<a name="l00282"></a>00282 {
<a name="l00283"></a>00283 CWindow* window=(CWindow*)(iWsEvent.Handle()); <span class="comment">// get window</span>
<a name="l00284"></a>00284 TPointerEvent& pointerEvent=*iWsEvent.Pointer();
<a name="l00285"></a>00285 window->HandlePointerEvent (pointerEvent);
<a name="l00286"></a>00286 <span class="keywordflow">break</span>;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288 <span class="keywordflow">case</span> EEventPointerExit:
<a name="l00289"></a>00289 <span class="keywordflow">case</span> EEventPointerEnter:
<a name="l00290"></a>00290 <span class="keywordflow">case</span> EEventPointerBufferReady:
<a name="l00291"></a>00291 {
<a name="l00292"></a>00292 CWindow* window=(CWindow*)(iWsEvent.Handle()); <span class="comment">// get window</span>
<a name="l00293"></a>00293 window->HandlePointerMoveBufferReady ();
<a name="l00294"></a>00294 <span class="keywordflow">break</span>;
<a name="l00295"></a>00295 }
<a name="l00296"></a>00296 <span class="keywordflow">case</span> EEventDragDrop:
<a name="l00297"></a>00297 <span class="keywordflow">break</span>;
<a name="l00298"></a>00298 <span class="keywordflow">default</span>:
<a name="l00299"></a>00299 <span class="keywordflow">break</span>;
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301 IssueRequest(); <span class="comment">// maintain outstanding request</span>
<a name="l00302"></a>00302 }
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="comment">/****************************************************************************\</span>
<a name="l00305"></a>00305 <span class="comment">| Function: CExampleWsClient::HandleKeyEventL()</span>
<a name="l00306"></a>00306 <span class="comment">| Purpose: Processes key events for CExampleWsClient</span>
<a name="l00307"></a>00307 <span class="comment">\****************************************************************************/</span>
<a name="l00308"></a>00308 <span class="keywordtype">void</span> CExampleWsClient::HandleKeyEventL (TKeyEvent& <span class="comment">/*aKeyEvent*/</span>)
<a name="l00309"></a>00309 {
<a name="l00310"></a>00310 }
<a name="l00311"></a>00311
<a name="l00312"></a>00312
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