Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_camera_wrapper_example_app_ui_8cpp_source.html
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<h1>examples/ForumNokia/CameraExample/src/CameraWrapperExampleAppUi.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"> * Copyright (c) 2009 Nokia Corporation.</span>
<a name="l00003"></a>00003 <span class="comment"> */</span>
<a name="l00004"></a>00004
<a name="l00005"></a>00005 <span class="comment">// INCLUDE FILES</span>
<a name="l00006"></a>00006 <span class="preprocessor">#include <avkon.hrh></span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <eikon.hrh></span>
<a name="l00008"></a>00008 <span class="preprocessor">#include <aknmessagequerydialog.h></span>
<a name="l00009"></a>00009 <span class="preprocessor">#include <aknnotewrappers.h></span>
<a name="l00010"></a>00010 <span class="preprocessor">#include <eikenv.h></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="preprocessor">#include <CameraExample_0xEF24C10A.rsg></span>
<a name="l00013"></a>00013 <span class="preprocessor">#include "CameraWrapperExample.hrh"</span>
<a name="l00014"></a>00014 <span class="preprocessor">#include "CameraWrapperExample.pan"</span>
<a name="l00015"></a>00015 <span class="preprocessor">#include "CameraWrapperExampleApplication.h"</span>
<a name="l00016"></a>00016 <span class="preprocessor">#include "CameraWrapperExampleAppUi.h"</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include "CameraWrapperExampleAppView.h"</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// ============================ MEMBER FUNCTIONS ===============================</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::ConstructL ()
<a name="l00023"></a>00023 {
<a name="l00024"></a>00024 <span class="comment">// Initialise app UI with standard value.</span>
<a name="l00025"></a>00025 BaseConstructL (CAknAppUi::EAknEnableSkin );
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="comment">// Start receiving camera shutter key events</span>
<a name="l00028"></a>00028 <span class="preprocessor"> #ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span> CaptureCameraShutter(ETrue);
<a name="l00030"></a>00030 <span class="preprocessor"> #endif</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 <span class="comment">// Make this class observe changes in foreground events</span>
<a name="l00033"></a>00033 iEikonEnv->AddForegroundObserverL(*<span class="keyword">this</span>);
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="comment">// Create view</span>
<a name="l00036"></a>00036 iAppView = CCameraWrapperExampleAppView::NewL (ClientRect () );
<a name="l00037"></a>00037 }
<a name="l00038"></a>00038
<a name="l00039"></a>00039 CCameraWrapperExampleAppUi::CCameraWrapperExampleAppUi ()
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042
<a name="l00043"></a>00043 CCameraWrapperExampleAppUi::~CCameraWrapperExampleAppUi ()
<a name="l00044"></a>00044 {
<a name="l00045"></a>00045 <span class="keyword">delete</span> iAppView;
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="preprocessor"> #ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span> CaptureCameraShutter(EFalse);
<a name="l00049"></a>00049 <span class="preprocessor"> #endif</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00051"></a>00051 iShutterKeyHandles.Close();
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span>
<a name="l00056"></a>00056 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::CaptureCameraShutter(TBool aEnable)
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 <span class="comment">// Try to capture events from the camera shutter key(s)</span>
<a name="l00059"></a>00059 <span class="comment">// http://wiki.forum.nokia.com/index.php/KIS000563_-_Camera_shutter_key_(EKeyCamera_events)_cannot_be_used_in_3rd_party_applications</span>
<a name="l00060"></a>00060 <span class="keywordflow">if</span> (aEnable && !iCameraKeyCaptured)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 iCameraKeyCaptured = ETrue;
<a name="l00063"></a>00063 <span class="comment">// Enable capturing</span>
<a name="l00064"></a>00064 RProcess proc;
<a name="l00065"></a>00065 iShutterKeyHandles.Reset();
<a name="l00066"></a>00066 <span class="keywordflow">if</span>(proc.HasCapability(ECapabilitySwEvent))
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <span class="keywordflow">for</span>(TInt i=0; KCameraShutterKeyEventCodes[i] != 0; i++)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 TInt32 handle = iEikonEnv->RootWin().CaptureKey( KCameraShutterKeyEventCodes[i], 0, 0 );
<a name="l00071"></a>00071 <span class="keywordflow">if</span>(handle >= 0)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 iShutterKeyHandles.Append(handle);
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 <span class="keywordflow">else</span> <span class="keywordflow">if</span>(!aEnable && iCameraKeyCaptured)
<a name="l00079"></a>00079 {
<a name="l00080"></a>00080 iCameraKeyCaptured = EFalse;
<a name="l00081"></a>00081 <span class="comment">// Disable capturing</span>
<a name="l00082"></a>00082 <span class="comment">// Release the captured camera shutter key(s)</span>
<a name="l00083"></a>00083 <span class="keywordflow">for</span>(TInt i=0; i < iShutterKeyHandles.Count(); i++)
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 iEikonEnv->RootWin().CancelCaptureKey( iShutterKeyHandles[i] );
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089 <span class="preprocessor">#endif</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span>
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleGainingForeground()
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 <span class="comment">// Application gets focused so reserve the camera</span>
<a name="l00095"></a>00095 <span class="comment">// http://wiki.forum.nokia.com/index.php/CS000821_-_Handling_Camera_resource</span>
<a name="l00096"></a>00096 <span class="keywordflow">if</span> ( iAppView &&
<a name="l00097"></a>00097 iAppView->CameraEngine() &&
<a name="l00098"></a>00098 iAppView->CameraEngine()->State() != CCameraEngine::EEngineNotReady )
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 iAppView->CameraEngine()->ReserveAndPowerOn();
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00103"></a>00103 <span class="preprocessor"></span> CaptureCameraShutter(ETrue);
<a name="l00104"></a>00104 <span class="preprocessor">#endif</span>
<a name="l00105"></a>00105 <span class="preprocessor"></span> }
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleLosingForeground()
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="comment">// Application loses focus so release the camera</span>
<a name="l00111"></a>00111 <span class="comment">// http://wiki.forum.nokia.com/index.php/CS000821_-_Handling_Camera_resource</span>
<a name="l00112"></a>00112 <span class="keywordflow">if</span> ( iAppView &&
<a name="l00113"></a>00113 iAppView->CameraEngine() &&
<a name="l00114"></a>00114 iAppView->CameraEngine()->State() != CCameraEngine::EEngineNotReady )
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 iAppView->CameraEngine()->ReleaseAndPowerOff();
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="preprocessor">#ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span> CaptureCameraShutter(EFalse);
<a name="l00120"></a>00120 <span class="preprocessor">#endif</span>
<a name="l00121"></a>00121 <span class="preprocessor"></span> }
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::UseOptionsExitCbaL()
<a name="l00125"></a>00125 {
<a name="l00126"></a>00126 CEikButtonGroupContainer* cba = Cba();
<a name="l00127"></a>00127 <span class="keywordflow">if</span> (cba)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 cba->SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_EXIT);
<a name="l00130"></a>00130 cba->DrawNow();
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::UseOptionsBackCbaL()
<a name="l00135"></a>00135 {
<a name="l00136"></a>00136 CEikButtonGroupContainer* cba = Cba();
<a name="l00137"></a>00137 <span class="keywordflow">if</span> (cba)
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 cba->SetCommandSetL(R_AVKON_SOFTKEYS_OPTIONS_BACK);
<a name="l00140"></a>00140 cba->DrawNow();
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 TBool CCameraWrapperExampleAppUi::IsBackCBA()
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 CEikButtonGroupContainer* cba = Cba();
<a name="l00147"></a>00147 <span class="comment">// NOTE: There should be EAknSoftkeyBack in the application because</span>
<a name="l00148"></a>00148 <span class="comment">// we use R_AVKON_SOFTKEYS_SELECT_BACK, but it seems that there is EAknSoftkeyCancel</span>
<a name="l00149"></a>00149 CCoeControl* back = cba->ControlOrNull(EAknSoftkeyBack);
<a name="l00150"></a>00150 CCoeControl* cancel = cba->ControlOrNull(EAknSoftkeyCancel);
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (back || cancel)
<a name="l00152"></a>00152 <span class="keywordflow">return</span> ETrue;
<a name="l00153"></a>00153 <span class="keywordflow">else</span>
<a name="l00154"></a>00154 <span class="keywordflow">return</span> EFalse;
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 TKeyResponse CCameraWrapperExampleAppUi::HandleKeyEventL(
<a name="l00158"></a>00158 <span class="keyword">const</span> TKeyEvent& aKeyEvent,TEventCode aType)
<a name="l00159"></a>00159 {
<a name="l00160"></a>00160 <span class="comment">// Capture picture with selection key</span>
<a name="l00161"></a>00161 <span class="keywordflow">switch</span> ( aKeyEvent.iCode )
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 <span class="keywordflow">case</span> EKeyOK:
<a name="l00164"></a>00164 <span class="keywordflow">case</span> EStdKeyDevice3:
<a name="l00165"></a>00165 <span class="keywordflow">case</span> EKeyUpArrow:
<a name="l00166"></a>00166 <span class="keywordflow">case</span> EKeyDownArrow:
<a name="l00167"></a>00167 {
<a name="l00168"></a>00168 <span class="comment">// Capture picture</span>
<a name="l00169"></a>00169 <span class="keywordflow">return</span> iAppView->OfferKeyEventL(aKeyEvent,aType);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 <span class="keywordflow">default</span>:
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 <span class="keywordflow">break</span>;
<a name="l00174"></a>00174 }
<a name="l00175"></a>00175 };
<a name="l00176"></a>00176
<a name="l00177"></a>00177 <span class="comment">// Camera shutter events handling</span>
<a name="l00178"></a>00178 <span class="preprocessor"> #ifdef ENABLE_CAMERA_SHUTTER</span>
<a name="l00179"></a>00179 <span class="preprocessor"></span> <span class="comment">// Camera shutter autofocus</span>
<a name="l00180"></a>00180 <span class="keywordflow">switch</span> ( aKeyEvent.iScanCode )
<a name="l00181"></a>00181 {
<a name="l00182"></a>00182 <span class="keywordflow">case</span> KStdKeyCameraFocus:
<a name="l00183"></a>00183 <span class="keywordflow">case</span> KStdKeyCameraFocus2:
<a name="l00184"></a>00184 {
<a name="l00185"></a>00185 <span class="comment">// Camera shutter autofocus</span>
<a name="l00186"></a>00186 <span class="keywordflow">return</span> iAppView->OfferKeyEventL(aKeyEvent,aType);
<a name="l00187"></a>00187 }
<a name="l00188"></a>00188 <span class="keywordflow">default</span>:
<a name="l00189"></a>00189 {
<a name="l00190"></a>00190 <span class="keywordflow">break</span>;
<a name="l00191"></a>00191 }
<a name="l00192"></a>00192 };
<a name="l00193"></a>00193 <span class="comment">// Camera shutter key</span>
<a name="l00194"></a>00194 <span class="keywordflow">for</span>(TInt i=0; KCameraShutterKeyEventCodes[i] != 0; i++)
<a name="l00195"></a>00195 {
<a name="l00196"></a>00196 <span class="keywordflow">if</span>( KCameraShutterKeyEventCodes[i] == aKeyEvent.iCode )
<a name="l00197"></a>00197 {
<a name="l00198"></a>00198 <span class="comment">// Capture image</span>
<a name="l00199"></a>00199 iAppView->Capture();
<a name="l00200"></a>00200 <span class="keywordflow">return</span> EKeyWasConsumed;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 <span class="preprocessor"> #endif</span>
<a name="l00204"></a>00204 <span class="preprocessor"></span>
<a name="l00205"></a>00205 <span class="keywordflow">return</span> EKeyWasNotConsumed;
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleCommandL (TInt aCommand )
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210 <span class="keywordflow">switch</span> (aCommand )
<a name="l00211"></a>00211 {
<a name="l00212"></a>00212 <span class="keywordflow">case</span> EEikCmdExit:
<a name="l00213"></a>00213 <span class="keywordflow">case</span> EAknSoftkeyExit:
<a name="l00214"></a>00214 {
<a name="l00215"></a>00215 Exit();
<a name="l00216"></a>00216 <span class="keywordflow">break</span>;
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218 <span class="keywordflow">case</span> EAknSoftkeyBack:
<a name="l00219"></a>00219 {
<a name="l00220"></a>00220 iAppView->CancelCapturedPicture();
<a name="l00221"></a>00221 UseOptionsExitCbaL();
<a name="l00222"></a>00222 <span class="keywordflow">break</span>;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224 <span class="keywordflow">case</span> EAbout:
<a name="l00225"></a>00225 {
<a name="l00226"></a>00226 CAknMessageQueryDialog* dlg = <span class="keyword">new</span> (ELeave) CAknMessageQueryDialog ();
<a name="l00227"></a>00227 dlg->PrepareLC (R_ABOUT_QUERY_DIALOG );
<a name="l00228"></a>00228 HBufC* title = iEikonEnv->AllocReadResourceLC (R_ABOUT_DIALOG_TITLE );
<a name="l00229"></a>00229 dlg->QueryHeading ()->SetTextL (*title );
<a name="l00230"></a>00230 CleanupStack::PopAndDestroy (); <span class="comment">//title</span>
<a name="l00231"></a>00231 HBufC* msg = iEikonEnv->AllocReadResourceLC (R_ABOUT_DIALOG_TEXT );
<a name="l00232"></a>00232 dlg->SetMessageTextL (*msg );
<a name="l00233"></a>00233 CleanupStack::PopAndDestroy (); <span class="comment">//msg</span>
<a name="l00234"></a>00234 dlg->RunLD();
<a name="l00235"></a>00235 <span class="keywordflow">break</span>;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 <span class="keywordflow">default</span>:
<a name="l00238"></a>00238 {
<a name="l00239"></a>00239 <span class="keywordflow">break</span>;
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241 };
<a name="l00242"></a>00242 }
<a name="l00243"></a>00243
<a name="l00244"></a>00244 <span class="keywordtype">void</span> CCameraWrapperExampleAppUi::HandleResourceChangeL(TInt aType)
<a name="l00245"></a>00245 {
<a name="l00246"></a>00246 CAknAppUi::HandleResourceChangeL( aType );
<a name="l00247"></a>00247
<a name="l00248"></a>00248 <span class="keywordflow">if</span> ( aType==KEikDynamicLayoutVariantSwitch )
<a name="l00249"></a>00249 {
<a name="l00250"></a>00250 <span class="keywordflow">if</span> (iAppView)
<a name="l00251"></a>00251 {
<a name="l00252"></a>00252 TRect rect;
<a name="l00253"></a>00253 AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane,rect);
<a name="l00254"></a>00254 iAppView->SetRect(rect);
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256 }
<a name="l00257"></a>00257
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="comment">// End of File</span>
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