Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_descriptor_ex_container_8cpp_source.html
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+++ b/Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_descriptor_ex_container_8cpp_source.html	Tue Mar 30 16:16:55 2010 +0100
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+<title>TB9.2 Example Applications: examples/ForumNokia/DescriptorExample/src/DescriptorExContainer.cpp Source File</title>
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+<h1>examples/ForumNokia/DescriptorExample/src/DescriptorExContainer.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 &lt;coemain.h&gt;</span>
+<a name="l00007"></a>00007 <span class="preprocessor">#include &lt;eikenv.h&gt;</span>
+<a name="l00008"></a>00008 <span class="preprocessor">#include &lt;gdi.h&gt;</span>
+<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;txtrich.h&gt;</span>
+<a name="l00010"></a>00010 <span class="preprocessor">#include &lt;aknsbasicbackgroundcontrolcontext.h&gt;</span>
+<a name="l00011"></a>00011 
+<a name="l00012"></a>00012 <span class="preprocessor">#include &quot;DescriptorExContainer.h&quot;</span>
+<a name="l00013"></a>00013 
+<a name="l00014"></a>00014 
+<a name="l00015"></a>00015 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00016"></a>00016 <span class="comment">// Two phase constructor. Constructs container containing one non editable</span>
+<a name="l00017"></a>00017 <span class="comment">// editor component.</span>
+<a name="l00018"></a>00018 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00019"></a><a class="code" href="class_c_descriptor_ex_container.html#acee626ffc604002e389a14eed03108db">00019</a> <span class="keywordtype">void</span> <a class="code" href="class_c_descriptor_ex_container.html#acee626ffc604002e389a14eed03108db">CDescriptorExContainer::ConstructL</a>(<span class="keyword">const</span> TRect&amp; aRect)
+<a name="l00020"></a>00020     {
+<a name="l00021"></a>00021     CreateWindowL();
+<a name="l00022"></a>00022 
+<a name="l00023"></a>00023     <span class="comment">// Create editable editor control</span>
+<a name="l00024"></a>00024     iTextBox = <span class="keyword">new</span> (ELeave) CEikEdwin();
+<a name="l00025"></a>00025     iTextBox-&gt;SetContainerWindowL( *<span class="keyword">this</span> );
+<a name="l00026"></a>00026     iTextBox-&gt;ConstructL( CEikEdwin::ENoAutoSelection |
+<a name="l00027"></a>00027                           CEikEdwin::EDisplayOnly |
+<a name="l00028"></a>00028                           CEikEdwin::EReadOnly |
+<a name="l00029"></a>00029                           CEikEdwin::EAvkonEditor |
+<a name="l00030"></a>00030                           CEikEdwin::EInclusiveSizeFixed);
+<a name="l00031"></a>00031     iTextBox-&gt;CreateScrollBarFrameL()-&gt;SetScrollBarVisibilityL(
+<a name="l00032"></a>00032             CEikScrollBarFrame::EOff, CEikScrollBarFrame::EOn);
+<a name="l00033"></a>00033     
+<a name="l00034"></a>00034     iTextBox-&gt;UpdateScrollBarsL();
+<a name="l00035"></a>00035     
+<a name="l00036"></a>00036     <span class="comment">// http://wiki.forum.nokia.com/index.php/TSS000578_-_How_to_ensure_that_the_scroll_bar_background_is_drawn_properly%3F</span>
+<a name="l00037"></a>00037     <span class="comment">// Skin support</span>
+<a name="l00038"></a>00038     iSkinContext = CAknsBasicBackgroundControlContext::NewL(KAknsIIDQsnBgAreaMainAppsGrid,aRect,EFalse);         
+<a name="l00039"></a>00039     
+<a name="l00040"></a>00040     <span class="comment">// Activate the window, which makes it ready to be drawn</span>
+<a name="l00041"></a>00041     ActivateL();
+<a name="l00042"></a>00042 
+<a name="l00043"></a>00043     <span class="comment">// Set the windows size</span>
+<a name="l00044"></a>00044     <span class="comment">// NOTE: To call this after ActivateL() is solution to get</span>
+<a name="l00045"></a>00045     <span class="comment">// scrollbarframe width in SizeChanged() method.</span>
+<a name="l00046"></a>00046     SetRect(aRect);
+<a name="l00047"></a>00047     }
+<a name="l00048"></a>00048 
+<a name="l00049"></a>00049 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00050"></a>00050 <span class="comment">// Destroys all resources owned by this object.</span>
+<a name="l00051"></a>00051 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00052"></a><a class="code" href="class_c_descriptor_ex_container.html#a3ed61f26ea8dc81ec7780c174fcc21f2">00052</a> <a class="code" href="class_c_descriptor_ex_container.html#a3ed61f26ea8dc81ec7780c174fcc21f2">CDescriptorExContainer::~CDescriptorExContainer</a>()
+<a name="l00053"></a>00053     {
+<a name="l00054"></a>00054     <span class="keyword">delete</span> iTextBox;
+<a name="l00055"></a>00055     <span class="keyword">delete</span> iSkinContext;
+<a name="l00056"></a>00056     }
+<a name="l00057"></a>00057 
+<a name="l00058"></a>00058 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00059"></a>00059 <span class="comment">// Sets the data shown in editor and sets the focus on editor.</span>
+<a name="l00060"></a>00060 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00061"></a><a class="code" href="class_c_descriptor_ex_container.html#ab7b00bc5265b7e7b02498d490b537341">00061</a> <span class="keywordtype">void</span> <a class="code" href="class_c_descriptor_ex_container.html#ab7b00bc5265b7e7b02498d490b537341">CDescriptorExContainer::SetTextL</a>(<span class="keyword">const</span> TDesC&amp; aText)
+<a name="l00062"></a>00062 {
+<a name="l00063"></a>00063     iTextBox-&gt;SetTextL( &amp;aText );
+<a name="l00064"></a>00064     iTextBox-&gt;SetFocus( ETrue );
+<a name="l00065"></a>00065     
+<a name="l00066"></a>00066     iTextBox-&gt;HandleTextChangedL();
+<a name="l00067"></a>00067     iTextBox-&gt;UpdateScrollBarsL();
+<a name="l00068"></a>00068     
+<a name="l00069"></a>00069 }
+<a name="l00070"></a>00070 
+<a name="l00071"></a>00071 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00072"></a>00072 <span class="comment">// Return number of objects in this container</span>
+<a name="l00073"></a>00073 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00074"></a>00074 TInt CDescriptorExContainer::CountComponentControls()<span class="keyword"> const</span>
+<a name="l00075"></a>00075 <span class="keyword">    </span>{
+<a name="l00076"></a>00076     <span class="keywordflow">return</span> 1; <span class="comment">// return nbr of controls inside this container</span>
+<a name="l00077"></a>00077     }
+<a name="l00078"></a>00078 
+<a name="l00079"></a>00079 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00080"></a>00080 <span class="comment">// Handle up and down keys to scroll the edwin control.</span>
+<a name="l00081"></a>00081 <span class="comment">// </span>
+<a name="l00082"></a>00082 <span class="comment">// For some odd reason the edwin control doesn&#39;t process keyevent expect in</span>
+<a name="l00083"></a>00083 <span class="comment">// case that cursor is in the beginning or end of the document.</span>
+<a name="l00084"></a>00084 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00085"></a><a class="code" href="class_c_descriptor_ex_container.html#ab635bde519254d61e4dfda6d51c9f021">00085</a> TKeyResponse <a class="code" href="class_c_descriptor_ex_container.html#ab635bde519254d61e4dfda6d51c9f021">CDescriptorExContainer::OfferKeyEventL</a>(<span class="keyword">const</span> TKeyEvent&amp; aKeyEvent,
+<a name="l00086"></a>00086                                                     TEventCode aType)
+<a name="l00087"></a>00087 {
+<a name="l00088"></a>00088     TKeyResponse result = EKeyWasNotConsumed;
+<a name="l00089"></a>00089     <span class="keywordflow">switch</span>(aKeyEvent.iScanCode)
+<a name="l00090"></a>00090     {
+<a name="l00091"></a>00091     <span class="keywordflow">case</span> EStdKeyRightArrow:
+<a name="l00092"></a>00092     <span class="keywordflow">case</span> EStdKeyDownArrow:
+<a name="l00093"></a>00093         {
+<a name="l00094"></a>00094             result = EKeyWasConsumed;
+<a name="l00095"></a>00095             <span class="keywordflow">if</span>( aType == EEventKeyDown )
+<a name="l00096"></a>00096             {
+<a name="l00097"></a>00097                 iTextBox-&gt;MoveCursorL( TCursorPosition::EFLineDown, EFalse );
+<a name="l00098"></a>00098             }
+<a name="l00099"></a>00099             <span class="keywordflow">break</span>;
+<a name="l00100"></a>00100         }
+<a name="l00101"></a>00101 
+<a name="l00102"></a>00102     <span class="keywordflow">case</span> EStdKeyLeftArrow:
+<a name="l00103"></a>00103     <span class="keywordflow">case</span> EStdKeyUpArrow:
+<a name="l00104"></a>00104         {
+<a name="l00105"></a>00105             result = EKeyWasConsumed;
+<a name="l00106"></a>00106             <span class="keywordflow">if</span>( aType == EEventKeyDown )
+<a name="l00107"></a>00107             {
+<a name="l00108"></a>00108                 iTextBox-&gt;MoveCursorL( TCursorPosition::EFLineUp, EFalse );
+<a name="l00109"></a>00109             }
+<a name="l00110"></a>00110             <span class="keywordflow">break</span>;
+<a name="l00111"></a>00111         }
+<a name="l00112"></a>00112     }
+<a name="l00113"></a>00113     <span class="keywordflow">return</span> result;
+<a name="l00114"></a>00114 }
+<a name="l00115"></a>00115 
+<a name="l00116"></a>00116 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00117"></a>00117 <span class="comment">// Return component at requested index.</span>
+<a name="l00118"></a>00118 <span class="comment">// -----------------------------------------------------------------------------</span>
+<a name="l00119"></a>00119 CCoeControl* CDescriptorExContainer::ComponentControl(TInt aIndex)<span class="keyword"> const</span>
+<a name="l00120"></a>00120 <span class="keyword">    </span>{
+<a name="l00121"></a>00121     <span class="keywordflow">switch</span> ( aIndex )
+<a name="l00122"></a>00122         {
+<a name="l00123"></a>00123         <span class="keywordflow">case</span> 0:
+<a name="l00124"></a>00124             <span class="keywordflow">return</span> iTextBox;
+<a name="l00125"></a>00125         <span class="keywordflow">default</span>:
+<a name="l00126"></a>00126             <span class="keywordflow">return</span> NULL;
+<a name="l00127"></a>00127         }
+<a name="l00128"></a>00128     }
+<a name="l00129"></a>00129 
+<a name="l00130"></a>00130 TInt CDescriptorExContainer::GetScrollbarWidth()<span class="keyword"> const</span>
+<a name="l00131"></a>00131 <span class="keyword">    </span>{
+<a name="l00132"></a>00132     TInt scrollbarWidth = iTextBox-&gt;ScrollBarFrame()-&gt;
+<a name="l00133"></a>00133         ScrollBarBreadth(CEikScrollBar::EVertical);
+<a name="l00134"></a>00134     <span class="comment">// If scrollbars are not drawn yet, the width remains zero. In this</span>
+<a name="l00135"></a>00135     <span class="comment">// case, an intentionally magical number is returned.</span>
+<a name="l00136"></a>00136     <span class="keywordflow">if</span> (scrollbarWidth == 0)
+<a name="l00137"></a>00137         {
+<a name="l00138"></a>00138         scrollbarWidth = 8;
+<a name="l00139"></a>00139         }
+<a name="l00140"></a>00140     
+<a name="l00141"></a>00141     <span class="keywordflow">return</span> scrollbarWidth;
+<a name="l00142"></a>00142     }
+<a name="l00143"></a>00143 
+<a name="l00144"></a>00144 
+<a name="l00145"></a>00145 <span class="keywordtype">void</span> CDescriptorExContainer::SizeChanged()
+<a name="l00146"></a>00146     {
+<a name="l00147"></a>00147     TRect rect = Rect();
+<a name="l00148"></a>00148     TInt scrollbarWidth = GetScrollbarWidth();
+<a name="l00149"></a>00149     iTextBox-&gt;SetExtent(TPoint(0, 0),
+<a name="l00150"></a>00150             TSize(rect.Width() - scrollbarWidth, rect.Height()));
+<a name="l00151"></a>00151 
+<a name="l00152"></a>00152     iTextBox-&gt;UpdateScrollBarsL();
+<a name="l00153"></a>00153     
+<a name="l00154"></a>00154     <span class="comment">// Update new size for the skin</span>
+<a name="l00155"></a>00155     iSkinContext-&gt;SetRect(rect);
+<a name="l00156"></a>00156     }
+<a name="l00157"></a>00157 
+<a name="l00158"></a>00158 
+<a name="l00159"></a>00159 TTypeUid::Ptr CDescriptorExContainer::MopSupplyObject(TTypeUid aId)
+<a name="l00160"></a>00160     {
+<a name="l00161"></a>00161     <span class="comment">// That is for the skin support</span>
+<a name="l00162"></a>00162     <span class="keywordflow">if</span>( aId.iUid == MAknsControlContext::ETypeId &amp;&amp; iSkinContext != NULL )
+<a name="l00163"></a>00163         {
+<a name="l00164"></a>00164         <span class="keywordflow">return</span> MAknsControlContext::SupplyMopObject( aId, iSkinContext );
+<a name="l00165"></a>00165         }
+<a name="l00166"></a>00166     <span class="keywordflow">return</span> CCoeControl::MopSupplyObject( aId );    
+<a name="l00167"></a>00167     }
+<a name="l00168"></a>00168 
+</pre></div></div>
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+<a href="http://www.doxygen.org/index.html">
+<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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