examples/HelloWorld/HelloWorld_AppView.cpp

// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
//
// Initial Contributors:
// Nokia Corporation - initial contribution.
//
// Contributors:
//
// Description:
// HelloWorld_CExampleAppView.cpp
// Source file for the implementation of the 
// application view class - CExampleAppView
//

#include "HelloWorld.h"

//
//             Constructor for the view.
//
CExampleAppView::CExampleAppView()
        {
        }


//             Static NewL() function to start the standard two
//             phase construction.
//
CExampleAppView* CExampleAppView::NewL(const TRect& aRect)
        {
        CExampleAppView* self = new(ELeave) CExampleAppView();
        CleanupStack::PushL(self);
        self->ConstructL(aRect);
        CleanupStack::Pop();
        return self;
        }


//
//             Destructor for the view.
//
CExampleAppView::~CExampleAppView()
        {
        delete iExampleText;
        }


//             Second phase construction.
//
void CExampleAppView::ConstructL(const TRect& aRect)
    {
                           // Fetch the text from the resource file.
        iExampleText = iEikonEnv->AllocReadResourceL(R_EXAMPLE_TEXT_HELLO);
                   // Control is a window owning control
        CreateWindowL();
                   // Extent of the control. This is
                   // the whole rectangle available to application.
                   // The rectangle is passed to us from the application UI.
        SetRect(aRect);
                           // At this stage, the control is ready to draw so
                   // we tell the UI framework by activating it.
        ActivateL();
        }


//             Drawing the view - in this example, 
//             consists of drawing a simple outline rectangle
//             and then drawing the text in the middle.
//             We use the Normal font supplied by the UI.
//
//             In this example, we don't use the redraw
//             region because it's easier to redraw to
//             the whole client area.
//
void CExampleAppView::Draw(const TRect& /*aRect*/) const
        {
               // Window graphics context
        CWindowGc& gc = SystemGc();
                   // Area in which we shall draw
        TRect      drawRect = Rect();
                           // Font used for drawing text
        const CFont*     fontUsed;
        
                   // Start with a clear screen
        gc.Clear();
                           // Draw an outline rectangle (the default pen
                   // and brush styles ensure this) slightly
                   // smaller than the drawing area.
        drawRect.Shrink(10,10);                 
        gc.DrawRect(drawRect);
               // Use the title font supplied by the UI
        fontUsed = iEikonEnv->TitleFont();
        gc.UseFont(fontUsed);
                           // Draw the text in the middle of the rectangle.
        TInt   baselineOffset=(drawRect.Height() - fontUsed->HeightInPixels())/2; 
        gc.DrawText(*iExampleText,drawRect,baselineOffset,CGraphicsContext::ECenter, 0);
               // Finished using the font
        gc.DiscardFont();
        }

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