examples/HelloWorld/HelloWorld_AppView.cpp

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00026 
00027 Description: 
00028 HelloWorld_CExampleAppView.cpp
00029 Source file for the implementation of the 
00030 application view class - CExampleAppView 
00031 */
00032 
00033 
00034 
00035 #include "HelloWorld.h"
00036 
00037 //
00038 //             Constructor for the view.
00039 //
00040 CExampleAppView::CExampleAppView()
00041         {
00042         }
00043 
00044 
00045 //             Static NewL() function to start the standard two
00046 //             phase construction.
00047 //
00048 CExampleAppView* CExampleAppView::NewL(const TRect& aRect)
00049         {
00050         CExampleAppView* self = new(ELeave) CExampleAppView();
00051         CleanupStack::PushL(self);
00052         self->ConstructL(aRect);
00053         CleanupStack::Pop();
00054         return self;
00055         }
00056 
00057 
00058 //
00059 //             Destructor for the view.
00060 //
00061 CExampleAppView::~CExampleAppView()
00062         {
00063         delete iExampleText;
00064         }
00065 
00066 
00067 //             Second phase construction.
00068 //
00069 void CExampleAppView::ConstructL(const TRect& aRect)
00070     {
00071                            // Fetch the text from the resource file.
00072         iExampleText = iEikonEnv->AllocReadResourceL(R_EXAMPLE_TEXT_HELLO);
00073                    // Control is a window owning control
00074         CreateWindowL();
00075                    // Extent of the control. This is
00076                    // the whole rectangle available to application.
00077                    // The rectangle is passed to us from the application UI.
00078         SetRect(aRect);
00079                            // At this stage, the control is ready to draw so
00080                    // we tell the UI framework by activating it.
00081         ActivateL();
00082         }
00083 
00084 
00085 //             Drawing the view - in this example, 
00086 //             consists of drawing a simple outline rectangle
00087 //             and then drawing the text in the middle.
00088 //             We use the Normal font supplied by the UI.
00089 //
00090 //             In this example, we don't use the redraw
00091 //             region because it's easier to redraw to
00092 //             the whole client area.
00093 //
00094 void CExampleAppView::Draw(const TRect& /*aRect*/) const
00095         {
00096                // Window graphics context
00097         CWindowGc& gc = SystemGc();
00098                    // Area in which we shall draw
00099         TRect      drawRect = Rect();
00100                            // Font used for drawing text
00101         const CFont*     fontUsed;
00102         
00103                    // Start with a clear screen
00104         gc.Clear();
00105                            // Draw an outline rectangle (the default pen
00106                    // and brush styles ensure this) slightly
00107                    // smaller than the drawing area.
00108         drawRect.Shrink(10,10);                 
00109         gc.DrawRect(drawRect);
00110                // Use the title font supplied by the UI
00111         fontUsed = iEikonEnv->TitleFont();
00112         gc.UseFont(fontUsed);
00113                            // Draw the text in the middle of the rectangle.
00114         TInt   baselineOffset=(drawRect.Height() - fontUsed->HeightInPixels())/2; 
00115         gc.DrawText(*iExampleText,drawRect,baselineOffset,CGraphicsContext::ECenter, 0);
00116                // Finished using the font
00117         gc.DiscardFont();
00118         }
00119 
00120 
00121 

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