Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_audio_stream_view_8cpp_source.html
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<h1>examples/ForumNokia/AudioStreamExample/src/AudioStreamView.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 © 2008 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 <aknutils.h></span> <span class="comment">// Fonts</span>
<a name="l00007"></a>00007 <span class="preprocessor">#include <w32std.h></span> <span class="comment">// key codes and events</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include "AudioStreamView.h"</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="preprocessor">#include <TXTRICH.H></span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012
<a name="l00013"></a>00013 <span class="keyword">const</span> TUint KNumberOfLines = 0;
<a name="l00014"></a>00014 <span class="keyword">const</span> TUint KTextLimit = 0;
<a name="l00015"></a>00015
<a name="l00016"></a>00016
<a name="l00017"></a><a class="code" href="class_c_audio_stream_view.html#a0c3c0922449b6de8114f708626c60c29">00017</a> <a class="code" href="class_c_audio_stream_view.html">CAudioStreamView</a>* <a class="code" href="class_c_audio_stream_view.html#a0c3c0922449b6de8114f708626c60c29">CAudioStreamView::NewL</a>(<span class="keyword">const</span> TRect & aRect,
<a name="l00018"></a>00018 <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* aEngine)
<a name="l00019"></a>00019 {
<a name="l00020"></a>00020 <a class="code" href="class_c_audio_stream_view.html">CAudioStreamView</a>* <span class="keyword">self</span> = <a class="code" href="class_c_audio_stream_view.html#a6efacbc42b04733f1e5fee57848f17fe">NewLC</a>(aRect, aEngine);
<a name="l00021"></a>00021 CleanupStack::Pop(<span class="keyword">self</span>);
<a name="l00022"></a>00022 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00023"></a>00023 }
<a name="l00024"></a>00024
<a name="l00025"></a><a class="code" href="class_c_audio_stream_view.html#a6efacbc42b04733f1e5fee57848f17fe">00025</a> <a class="code" href="class_c_audio_stream_view.html">CAudioStreamView</a>* <a class="code" href="class_c_audio_stream_view.html#a6efacbc42b04733f1e5fee57848f17fe">CAudioStreamView::NewLC</a>(<span class="keyword">const</span> TRect & aRect,
<a name="l00026"></a>00026 <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* aEngine)
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028 <a class="code" href="class_c_audio_stream_view.html">CAudioStreamView</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_audio_stream_view.html">CAudioStreamView</a>();
<a name="l00029"></a>00029 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00030"></a>00030 <span class="keyword">self</span>->ConstructL(aRect, aEngine);
<a name="l00031"></a>00031 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00035"></a>00035 <span class="comment">// CAudioStreamView::ConstructL(const TRect& aRect, </span>
<a name="l00036"></a>00036 <span class="comment">// CAudioStreamEngine* aEngine)</span>
<a name="l00037"></a>00037 <span class="comment">//</span>
<a name="l00038"></a>00038 <span class="comment">// Standard EPOC 2nd phase constructor</span>
<a name="l00039"></a>00039 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00040"></a>00040 <span class="keywordtype">void</span> CAudioStreamView::ConstructL(<span class="keyword">const</span> TRect& aRect,
<a name="l00041"></a>00041 <a class="code" href="class_c_audio_stream_engine.html">CAudioStreamEngine</a>* aEngine)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 iEngine = aEngine;
<a name="l00044"></a>00044 <span class="comment">// create new window,</span>
<a name="l00045"></a>00045 CreateWindowL();
<a name="l00046"></a>00046
<a name="l00047"></a>00047 <span class="comment">// Create a rich text editor into which information can be logged</span>
<a name="l00048"></a>00048 iLogComponent = <span class="keyword">new</span>(ELeave) CEikRichTextEditor;
<a name="l00049"></a>00049 iLogComponent->ConstructL(<span class="keyword">this</span>, KNumberOfLines, KTextLimit,
<a name="l00050"></a>00050 CEikEdwin::EReadOnly | CEikEdwin::EAvkonDisableCursor);
<a name="l00051"></a>00051 iLogComponent->CreateScrollBarFrameL()->SetScrollBarVisibilityL(
<a name="l00052"></a>00052 CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOn);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="comment">// Set font</span>
<a name="l00055"></a>00055 <span class="preprocessor"> #ifdef __WINS__</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span> <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFontArial,<span class="stringliteral">"Arial"</span>);
<a name="l00057"></a>00057 TFontSpec MyeFontSpec (KFontArial, 8*10);
<a name="l00058"></a>00058 MyeFontSpec.iTypeface.SetIsProportional(ETrue);
<a name="l00059"></a>00059 <span class="comment">// Set font height</span>
<a name="l00060"></a>00060 TCharFormatMask charFormatMask;
<a name="l00061"></a>00061 charFormatMask.SetAttrib(EAttFontHeight);
<a name="l00062"></a>00062 TCharFormat charFormat(MyeFontSpec.iTypeface.iName, MyeFontSpec.iHeight);
<a name="l00063"></a>00063 charFormat.iFontPresentation.iTextColor=KRgbBlack;
<a name="l00064"></a>00064 charFormat.iFontSpec.iHeight=100;
<a name="l00065"></a>00065 <span class="comment">// apply formatting </span>
<a name="l00066"></a>00066 CRichText* text = iLogComponent->RichText();
<a name="l00067"></a>00067 text->ApplyCharFormatL(charFormat,charFormatMask,0,1);
<a name="l00068"></a>00068 <span class="preprocessor"> #endif</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span>
<a name="l00070"></a>00070 SetRect(aRect);
<a name="l00071"></a>00071 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KInfo, <span class="stringliteral">"Audio streaming example"</span>);
<a name="l00072"></a>00072 <a class="code" href="class_c_audio_stream_view.html#a173b6a9750b0d64f626617fa2809b3c5">ShowMessageL</a>(KInfo);
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="comment">// activate window</span>
<a name="l00075"></a>00075 ActivateL();
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="comment">// SetRect() is called again after ActivateL() to that ScrollBarFrame widht</span>
<a name="l00078"></a>00078 <span class="comment">// can be readed in SizeChanged()</span>
<a name="l00079"></a>00079 SetRect(aRect);
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00083"></a>00083 <span class="comment">// CAudioStreamView::CAudioStreamView()</span>
<a name="l00084"></a>00084 <span class="comment">//</span>
<a name="l00085"></a>00085 <span class="comment">// constructor</span>
<a name="l00086"></a>00086 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00087"></a>00087 CAudioStreamView::CAudioStreamView()
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00092"></a>00092 <span class="comment">// CAudioStreamView::~CAudioStreamView()</span>
<a name="l00093"></a>00093 <span class="comment">//</span>
<a name="l00094"></a>00094 <span class="comment">// destructor</span>
<a name="l00095"></a>00095 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00096"></a><a class="code" href="class_c_audio_stream_view.html#a2f9b76c8c4939fb3559add5a4dc36da5">00096</a> <a class="code" href="class_c_audio_stream_view.html#a2f9b76c8c4939fb3559add5a4dc36da5">CAudioStreamView::~CAudioStreamView</a>()
<a name="l00097"></a>00097 {
<a name="l00098"></a>00098 <span class="keyword">delete</span> iLogComponent;
<a name="l00099"></a>00099 }
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00102"></a>00102 <span class="comment">// CAudioStreamView::SizeChanged()</span>
<a name="l00103"></a>00103 <span class="comment">//</span>
<a name="l00104"></a>00104 <span class="comment">// called by framework when the view size is changed</span>
<a name="l00105"></a>00105 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00106"></a>00106 <span class="keywordtype">void</span> CAudioStreamView::SizeChanged()
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 TRect rect = Rect();
<a name="l00109"></a>00109
<a name="l00110"></a>00110 TInt scrollbarWidth = iLogComponent->ScrollBarFrame()->ScrollBarBreadth(CEikScrollBar::EVertical);
<a name="l00111"></a>00111 <span class="comment">// If scrollbars are not drawn yet, the width remains zero. In this</span>
<a name="l00112"></a>00112 <span class="comment">// case, an intentionally magical number is returned.</span>
<a name="l00113"></a>00113 <span class="keywordflow">if</span> (scrollbarWidth == 0)
<a name="l00114"></a>00114 {
<a name="l00115"></a>00115 scrollbarWidth = 8;
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 iLogComponent->SetExtent(TPoint(0, 0),
<a name="l00118"></a>00118 TSize(rect.Width() - scrollbarWidth, rect.Height()));
<a name="l00119"></a>00119 DrawNow();
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <span class="comment">// ---------------------------------------------------------</span>
<a name="l00123"></a>00123 <span class="comment">// CAudioStreamView::HandleResourceChange()</span>
<a name="l00124"></a>00124 <span class="comment">// Called by framework when resource is changed.</span>
<a name="l00125"></a>00125 <span class="comment">// ---------------------------------------------------------</span>
<a name="l00126"></a>00126 <span class="comment">//</span>
<a name="l00127"></a>00127 <span class="keywordtype">void</span> CAudioStreamView::HandleResourceChange(TInt aType)
<a name="l00128"></a>00128 {
<a name="l00129"></a>00129 CCoeControl::HandleResourceChange(aType);
<a name="l00130"></a>00130 <span class="keywordflow">if</span> ( aType==KEikDynamicLayoutVariantSwitch )
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 TRect rect;
<a name="l00133"></a>00133 AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane, rect);
<a name="l00134"></a>00134 SetRect(rect);
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00140"></a>00140 <span class="comment">// CAudioStreamView::CountComponentControls() const</span>
<a name="l00141"></a>00141 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00142"></a>00142 TInt CAudioStreamView::CountComponentControls()<span class="keyword"> const</span>
<a name="l00143"></a>00143 <span class="keyword"> </span>{
<a name="l00144"></a>00144 <span class="keywordflow">return</span> 1; <span class="comment">// return number of controls inside this container</span>
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146
<a name="l00147"></a>00147 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00148"></a>00148 <span class="comment">// CAudioStreamView::ComponentControl(TInt aIndex) const</span>
<a name="l00149"></a>00149 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00150"></a>00150 CCoeControl* CAudioStreamView::ComponentControl(TInt aIndex)<span class="keyword"> const</span>
<a name="l00151"></a>00151 <span class="keyword"> </span>{
<a name="l00152"></a>00152 <span class="keywordflow">switch</span> ( aIndex )
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 <span class="keywordflow">case</span> 0:
<a name="l00155"></a>00155 <span class="keywordflow">return</span> iLogComponent;
<a name="l00156"></a>00156 <span class="keywordflow">default</span>:
<a name="l00157"></a>00157 <span class="keywordflow">return</span> NULL;
<a name="l00158"></a>00158 }
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00163"></a>00163 <span class="comment">// CAudioStreamView::Draw(const TRect& aRect) const</span>
<a name="l00164"></a>00164 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00165"></a>00165 <span class="keywordtype">void</span> CAudioStreamView::Draw( <span class="keyword">const</span> TRect& aRect )<span class="keyword"> const</span>
<a name="l00166"></a>00166 <span class="keyword"> </span>{
<a name="l00167"></a>00167 CWindowGc& gc = SystemGc();
<a name="l00168"></a>00168 gc.SetPenStyle( CGraphicsContext::ENullPen );
<a name="l00169"></a>00169 gc.SetBrushColor( KRgbWhite );
<a name="l00170"></a>00170 gc.SetBrushStyle( CGraphicsContext::ESolidBrush );
<a name="l00171"></a>00171 gc.DrawRect( aRect );
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00175"></a>00175 <span class="comment">// CAudioStreamView::ShowMessageL(const TDesC& aMsg)</span>
<a name="l00176"></a>00176 <span class="comment">//</span>
<a name="l00177"></a>00177 <span class="comment">// displays status messages to user</span>
<a name="l00178"></a>00178 <span class="comment">// ----------------------------------------------------------------------------</span>
<a name="l00179"></a><a class="code" href="class_c_audio_stream_view.html#a173b6a9750b0d64f626617fa2809b3c5">00179</a> <span class="keywordtype">void</span> <a class="code" href="class_c_audio_stream_view.html#a173b6a9750b0d64f626617fa2809b3c5">CAudioStreamView::ShowMessageL</a>(<span class="keyword">const</span> TDesC& aMsg)
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 CPlainText* text = iLogComponent->Text();
<a name="l00182"></a>00182 text->InsertL(text->DocumentLength(), aMsg);
<a name="l00183"></a>00183 text->InsertL(text->DocumentLength(), CEditableText::ELineBreak);
<a name="l00184"></a>00184 iLogComponent->HandleTextChangedL();
<a name="l00185"></a>00185 <span class="comment">// Keep displaying the bottom of the screen</span>
<a name="l00186"></a>00186 iLogComponent->MoveCursorL(TCursorPosition::EFPageDown, EFalse);
<a name="l00187"></a>00187 DrawNow();
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="comment">// End of File </span>
<a name="l00192"></a>00192
<a name="l00193"></a>00193
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