simpleex_view.cpp

symbian下的几个小例子。。很值得学习

// simpleEx_view.cpp
//
// Copyright (c) Symbian Software Ltd 1999 - 2007.  All rights reserved.
//

/*=================================================================

      File: simpleEx_view.cpp

      This file contains the application view class for SimpleEx.

==================================================================*/

#include "eikenv.h"
#include <coemain.h>

#include "SimpleEx.h"
#include <SimpleExWthr.rsg>
#include <QikCommand.h>


CSimpleExAppView* CSimpleExAppView::NewL(CQikAppUi& aAppUi)
    {
    CSimpleExAppView* self = CSimpleExAppView::NewLC(aAppUi);
    CleanupStack::Pop(self);
    return self;
    }

CSimpleExAppView* CSimpleExAppView::NewLC(CQikAppUi& aAppUi)
    {
    CSimpleExAppView* self = new (ELeave) CSimpleExAppView(aAppUi);
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
    }

CSimpleExAppView::CSimpleExAppView(CQikAppUi& aAppUi) 
    : CQikViewBase(aAppUi, KNullViewId)
    {
    }

CSimpleExAppView::~CSimpleExAppView()
    {
    delete iWeather;
    }
void CSimpleExAppView::ConstructL()
    {

    BaseConstructL();
    iWeather = CWeatherInfo::NewL(*this);

    }

void CSimpleExAppView::ViewConstructL()
    {
    // Loads information about the UI configurations this view supports
    // together with definition of each view.	
    ViewConstructFromResourceL(R_SIMPLEEX_CONFIGURATIONS);
    }


TVwsViewId CSimpleExAppView::ViewId()const
    {
    return TVwsViewId(KUidSimpleExApp, KUidSimpleExView);
    }


void CSimpleExAppView::Draw(const TRect& ) const
    {

    CWindowGc& gc = SystemGc();   
    const CFont*     font;
    TRect drawRect = Rect();
        
    gc.Clear();

    font = iEikonEnv->TitleFont();
    gc.UseFont(font);
    TInt   baselineOffset=(drawRect.Height() - font->HeightInPixels())/2; 
    gc.DrawText(_L("Simple Example"),drawRect,baselineOffset,CGraphicsContext::ECenter, 0);
    
    gc.DiscardFont();
    }

void CSimpleExAppView::TemperatureReport(TDesC& aCity, TDesC& aTemperature)
    {
    TBuf<50> str;
    _LIT(KTempTitle,"Report:");
    _LIT(KTempMessage,"Temperature in %S is %S");

    str.Format(KTempMessage,&aCity,&aTemperature);
    TRAPD(err,iEikonEnv->InfoWinL(KTempTitle,str));
    }

void CSimpleExAppView::TemperatureError(TDesC& aErrStr,TInt aErrCode)
    {
    TBuf<50> str;
    _LIT(KErrTitle,"Error:");
    _LIT(KErrMsg,"%S (%d)");
    str.Format(KErrMsg,&aErrStr,aErrCode);

    TRAPD(err,iEikonEnv->InfoWinL(KErrTitle,str));  

    }

void CSimpleExAppView::HandleCommandL(CQikCommand& aCommand)
    {

    switch(aCommand.Id())
        {
  
        case ESimpleExCommand:
            {
                
            _LIT(KMessage,"Start Selected!");
            iEikonEnv->AlertWin(KMessage);
            break;
            }
            
        case  ESimpleExTemperatureCommand:
            {

            // Display the temperature in Austin, TX

            _LIT(KCityCode,"AUS");
            iWeather->GetTemperature(KCityCode);
            }

        default:
            CQikViewBase::HandleCommandL(aCommand);
        }
    }