Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/solution_2src_2_a_o_lab_text_flash_container_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/ForumNokia/Symbian_OS_Basics_Lab_Exercises_v3_1/Lab_04309.cb1/solution/src/AOLabTextFlashContainer.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2006 Nokia Corporation.</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="preprocessor">#include "AOLabTextFlashContainer.h"</span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "ActiveTimer.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include <eiklabel.h></span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KHelloText, <span class="stringliteral">"Hello"</span>);
<a name="l00008"></a>00008 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KWorldText, <span class="stringliteral">"World"</span>);
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="keyword">const</span> TInt KTimeoutValue = 2000000;
<a name="l00011"></a>00011
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="comment">// Constructs a container for this application</span>
<a name="l00014"></a>00014 <a class="code" href="class_c_a_o_lab_text_flash_container.html">CAOLabTextFlashContainer</a>* CAOLabTextFlashContainer::NewL(<span class="keyword">const</span> TRect& aRect)
<a name="l00015"></a>00015 {
<a name="l00016"></a>00016 <a class="code" href="class_c_a_o_lab_text_flash_container.html">CAOLabTextFlashContainer</a>* <span class="keyword">self</span> = <span class="keyword">new</span> ( ELeave ) <a class="code" href="class_c_a_o_lab_text_flash_container.html">CAOLabTextFlashContainer</a>();
<a name="l00017"></a>00017 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00018"></a>00018 <span class="keyword">self</span>->ConstructL(aRect);
<a name="l00019"></a>00019 CleanupStack::Pop(<span class="keyword">self</span>);
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00022"></a>00022 }
<a name="l00023"></a>00023
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="comment">// Symbian 2nd phase constructor</span>
<a name="l00026"></a>00026 <span class="keywordtype">void</span> CAOLabTextFlashContainer::ConstructL(<span class="keyword">const</span> TRect& aRect)
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028 CreateWindowL();
<a name="l00029"></a>00029
<a name="l00030"></a>00030 iTopLabel = <span class="keyword">new</span> (ELeave) CEikLabel;
<a name="l00031"></a>00031 iTopLabel->SetContainerWindowL(*<span class="keyword">this</span>);
<a name="l00032"></a>00032 iTopLabel->SetTextL(KHelloText);
<a name="l00033"></a>00033
<a name="l00034"></a>00034 iBottomLabel = <span class="keyword">new</span> (ELeave) CEikLabel;
<a name="l00035"></a>00035 iBottomLabel->SetContainerWindowL(*<span class="keyword">this</span>);
<a name="l00036"></a>00036 iBottomLabel->SetTextL(KWorldText);
<a name="l00037"></a>00037
<a name="l00038"></a>00038 iActiveTimer = CActiveTimer::NewL(*<span class="keyword">this</span>);
<a name="l00039"></a>00039 iIsVisible = ETrue;
<a name="l00040"></a>00040
<a name="l00041"></a>00041 SetRect(aRect);
<a name="l00042"></a>00042 ActivateL();
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="comment">// C++ Destructor</span>
<a name="l00047"></a>00047 CAOLabTextFlashContainer::~CAOLabTextFlashContainer()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <span class="keyword">delete</span> iActiveTimer;
<a name="l00050"></a>00050 <span class="keyword">delete</span> iTopLabel;
<a name="l00051"></a>00051 <span class="keyword">delete</span> iBottomLabel;
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="comment">// Called by framework when the view size is changed</span>
<a name="l00056"></a>00056 <span class="keywordtype">void</span> CAOLabTextFlashContainer::SizeChanged()
<a name="l00057"></a>00057 {
<a name="l00058"></a>00058 iTopLabel->SetExtent( TPoint(0,0), TSize(Rect().Width(), Rect().Height()/2));
<a name="l00059"></a>00059 iBottomLabel->SetExtent( TPoint(0,Rect().Height()/2), TSize(Rect().Width(),Rect().Height()/2));
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// Returns the number of controls inside this container</span>
<a name="l00064"></a>00064 TInt CAOLabTextFlashContainer::CountComponentControls()<span class="keyword"> const</span>
<a name="l00065"></a>00065 <span class="keyword"> </span>{
<a name="l00066"></a>00066 <span class="keywordflow">return</span> 2;
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="comment">// Gets an indexed component of this compound control</span>
<a name="l00071"></a>00071 CCoeControl* CAOLabTextFlashContainer::ComponentControl(TInt aIndex)<span class="keyword"> const</span>
<a name="l00072"></a>00072 <span class="keyword"> </span>{
<a name="l00073"></a>00073 <span class="keywordflow">switch</span> ( aIndex )
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 <span class="keywordflow">case</span> 0:
<a name="l00076"></a>00076 <span class="keywordflow">return</span> iTopLabel;
<a name="l00077"></a>00077 <span class="keywordflow">case</span> 1:
<a name="l00078"></a>00078 <span class="keywordflow">return</span> iBottomLabel;
<a name="l00079"></a>00079 <span class="keywordflow">default</span>:
<a name="l00080"></a>00080 <span class="keywordflow">return</span> NULL;
<a name="l00081"></a>00081 }
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="comment">// Draw a grey rectangle that fills the client area of the screen</span>
<a name="l00086"></a>00086 <span class="keywordtype">void</span> CAOLabTextFlashContainer::Draw(<span class="keyword">const</span> TRect& aRect)<span class="keyword"> const</span>
<a name="l00087"></a>00087 <span class="keyword"> </span>{
<a name="l00088"></a>00088 CWindowGc& gc = SystemGc();
<a name="l00089"></a>00089
<a name="l00090"></a>00090 gc.SetPenStyle(CGraphicsContext::ENullPen);
<a name="l00091"></a>00091 gc.SetBrushColor(KRgbGray);
<a name="l00092"></a>00092 gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
<a name="l00093"></a>00093 gc.DrawRect(aRect);
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="comment">// Starts the text flashing</span>
<a name="l00098"></a>00098 <span class="keywordtype">void</span> CAOLabTextFlashContainer::FlashingText()
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 iTopLabel->SetTextL(KHelloText);
<a name="l00101"></a>00101 iBottomLabel->SetTextL(KWorldText);
<a name="l00102"></a>00102 DrawNow();
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (!iIsFlashing)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106 iIsVisible = ETrue;
<a name="l00107"></a>00107 iIsFlashing = ETrue;
<a name="l00108"></a>00108 iActiveTimer->After(KTimeoutValue);
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112
<a name="l00113"></a>00113 <span class="comment">// Stops the text flashing</span>
<a name="l00114"></a>00114 <span class="keywordtype">void</span> CAOLabTextFlashContainer::StopFlashing()
<a name="l00115"></a>00115 {
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (iIsFlashing)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 iIsFlashing = EFalse;
<a name="l00119"></a>00119 iActiveTimer->Cancel();
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 iTopLabel->MakeVisible(ETrue);
<a name="l00123"></a>00123 iBottomLabel->MakeVisible(ETrue);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="comment">// Callback function when the active object timer completes </span>
<a name="l00128"></a>00128 <span class="keywordtype">void</span> CAOLabTextFlashContainer::TimerComplete(TInt aError)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 <span class="keywordflow">if</span> (KErrNone == aError)
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 iIsVisible = !iIsVisible;
<a name="l00133"></a>00133 iActiveTimer->After(KTimeoutValue);
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135 <span class="keywordflow">else</span>
<a name="l00136"></a>00136 {
<a name="l00137"></a>00137 iIsVisible = ETrue;
<a name="l00138"></a>00138 iIsFlashing = EFalse;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 iTopLabel->MakeVisible(iIsVisible);
<a name="l00142"></a>00142 iBottomLabel->MakeVisible(iIsVisible);
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">// End of File </span>
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