Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_bmp_anim_gui___app_view_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/AppFramework/BmpAnim/BmpAnimGui_AppView.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2006-2009 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">// BmpAnimGuiAppView.cpp</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include "BmpAnimGui.h"</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// Animate the balls such that they move across the screen in a sinusoidal pattern</span>
<a name="l00021"></a>00021 <span class="keywordtype">void</span> CExampleAppView::LoadMbmL( <span class="keyword">const</span> TDesC& aMbmFile )
<a name="l00022"></a>00022 {
<a name="l00023"></a>00023 <span class="comment">// Construct BitmapAnimClientData </span>
<a name="l00024"></a>00024 <span class="keywordflow">if</span>( !iAnimFrames )
<a name="l00025"></a>00025 {
<a name="l00026"></a>00026 CFbsBitmap* bitmap;
<a name="l00027"></a>00027 CFbsBitmap* mask;
<a name="l00028"></a>00028 CBitmapFrameData* frameGeneral;
<a name="l00029"></a>00029 iAnimFrames = CBitmapAnimClientData::NewL();
<a name="l00030"></a>00030 CleanupStack::PushL( iAnimFrames );
<a name="l00031"></a>00031
<a name="l00032"></a>00032 iX = KColorBallsAnimXDeflectionStart;
<a name="l00033"></a>00033 TInt ballIndex = KColorBallsMbmFirstBallIndex;
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keywordflow">while</span>( iX < KColorBallsAnimXDeflectionTerminalValue )
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 <span class="comment">// Load the image</span>
<a name="l00038"></a>00038 bitmap = <span class="keyword">new</span> (ELeave) CFbsBitmap();
<a name="l00039"></a>00039 CleanupStack::PushL( bitmap );
<a name="l00040"></a>00040 User::LeaveIfError( bitmap->Load(aMbmFile, ballIndex) );
<a name="l00041"></a>00041 ballIndex = ( KColorBallsMbmLastBallIndex == ballIndex ) ? KColorBallsMbmFirstBallIndex : ballIndex + 1;
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="comment">// Load the mask</span>
<a name="l00044"></a>00044 mask = <span class="keyword">new</span> (ELeave) CFbsBitmap();
<a name="l00045"></a>00045 CleanupStack::PushL( mask );
<a name="l00046"></a>00046 User::LeaveIfError( mask->Load(aMbmFile, KColorBallsMbmMaskIndex) );
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="comment">// Calculate the y deflection</span>
<a name="l00049"></a>00049 iY =TInt( KColorBallsAnimYDeflectionOffset + KColorBallsAnimYDeflectionMultiplier*sin( iX ));
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="comment">// Construct the frame</span>
<a name="l00052"></a>00052 frameGeneral = CBitmapFrameData::NewL( bitmap, mask, KColorBallsAnimFrameDelay, TPoint(iX, iY) );
<a name="l00053"></a>00053 CleanupStack::PushL( frameGeneral );
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="comment">// Add it to the sequence</span>
<a name="l00056"></a>00056 iAnimFrames->AppendFrameL( frameGeneral );
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="comment">// Popping order- mask, bitmap, iFrameGeneral</span>
<a name="l00059"></a>00059 CleanupStack::Pop( 3 );
<a name="l00060"></a>00060
<a name="l00061"></a>00061 iX += KColorBallsAnimXDeflectionIncrement;
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063
<a name="l00064"></a>00064 iBitmapAnimPlayer.SetBitmapAnimDataL( *iAnimFrames );
<a name="l00065"></a>00065 CleanupStack::Pop( iAnimFrames );
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068
<a name="l00069"></a>00069 CExampleAppView::CExampleAppView()
<a name="l00070"></a>00070 : iBitmapAnimPlayer( iAnimDll ),iAnimDll( iEikonEnv->WsSession() )
<a name="l00071"></a>00071
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <a class="code" href="class_c_example_app_view.html">CExampleAppView</a>* CExampleAppView::NewL(<span class="keyword">const</span> TRect& aRect)
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <a class="code" href="class_c_example_app_view.html">CExampleAppView</a>* <span class="keyword">self</span> = <span class="keyword">new</span>(ELeave) <a class="code" href="class_c_example_app_view.html">CExampleAppView</a>();
<a name="l00078"></a>00078 CleanupStack::PushL(<span class="keyword">self</span>);
<a name="l00079"></a>00079 <span class="keyword">self</span>->ConstructL(aRect);
<a name="l00080"></a>00080 CleanupStack::Pop();
<a name="l00081"></a>00081 <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083
<a name="l00084"></a>00084 CExampleAppView::~CExampleAppView()
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 iBitmapAnimPlayer.Close();
<a name="l00087"></a>00087 <span class="keyword">delete</span>( iAnimFrames );
<a name="l00088"></a>00088 iAnimDll.Close();
<a name="l00089"></a>00089 <span class="keyword">delete</span> iExampleText;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="comment">// Standard initialisation for a window-owning control.</span>
<a name="l00094"></a>00094 <span class="keywordtype">void</span> CExampleAppView::ConstructL(<span class="keyword">const</span> TRect& aRect)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="comment">// Fetch the text from the resource file.</span>
<a name="l00097"></a>00097 iExampleText = iEikonEnv->AllocReadResourceL( R_EXAMPLE_TEXT_BB );
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// The control is window-owning.</span>
<a name="l00100"></a>00100 CreateWindowL();
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// Extent of the control. </span>
<a name="l00103"></a>00103 SetRect(aRect);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">// The control is ready to draw, so notify the UI framework.</span>
<a name="l00106"></a>00106 ActivateL();
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">// Some animation preamble.</span>
<a name="l00109"></a>00109 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KDllName, <span class="stringliteral">"BMPANSRV.DLL"</span> );
<a name="l00110"></a>00110 User::LeaveIfError( iAnimDll.Load( KDllName ) );
<a name="l00111"></a>00111 iBitmapAnimPlayer.ConstructL( Window() );
<a name="l00112"></a>00112
<a name="l00113"></a>00113 LoadMbmL( KColorBallsMbmPath );
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116
<a name="l00117"></a>00117
<a name="l00118"></a>00118 <span class="comment">// Draws the view with a simple outline rectangle </span>
<a name="l00119"></a>00119 <span class="keywordtype">void</span> CExampleAppView::Draw(<span class="keyword">const</span> TRect& <span class="comment">/*aRect*/</span>)<span class="keyword"> const</span>
<a name="l00120"></a>00120 <span class="keyword"> </span>{
<a name="l00121"></a>00121 <span class="comment">// Window graphics context</span>
<a name="l00122"></a>00122 CWindowGc& gc = SystemGc();
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="comment">// Area in which we shall draw</span>
<a name="l00125"></a>00125 TRect drawRect = Rect();
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="comment">// The font used for drawing the text</span>
<a name="l00128"></a>00128 <span class="keyword">const</span> CFont* fontUsed;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="comment">// Clear the screen</span>
<a name="l00131"></a>00131 gc.Clear();
<a name="l00132"></a>00132
<a name="l00133"></a>00133 <span class="comment">// Use the title font supplied by the UI</span>
<a name="l00134"></a>00134 fontUsed = iEikonEnv->TitleFont();
<a name="l00135"></a>00135 gc.UseFont(fontUsed);
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">// Draw the text in the rectangle and discard the font.</span>
<a name="l00138"></a>00138 TInt baselineOffset=(drawRect.Height() - fontUsed->HeightInPixels())/5;
<a name="l00139"></a>00139 gc.DrawText(*iExampleText,drawRect,baselineOffset,CGraphicsContext::ECenter, 0);
<a name="l00140"></a>00140 gc.DiscardFont();
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
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