fontsandtextappui.cpp

来自「series60 应用程序开发的源代码 series60 应用程序开发的源代码」· C++ 代码 · 共 143 行

/**
 * 
 * @brief Definition of CFontsAndTextAppUi
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version 1.0
 */

// INCLUDE FILES
// Class includes
#include "FontsAndTextAppUi.h"

// System includes
#include <akntabgrp.h>    // CAknTabGroup
#include <aknnavi.h>    // CAknNavigationControlContainer
#include <aknnavide.h>    // CAknNavigationDecorator

// User includes
#include "FontsAndTextBasicView.h"            // CFontsAndTextBasicView
#include "FontsAndTextMetricsView.h"        // CFontsAndTextMetricsView
#include "FontsAndTextDeviceFontsView.h"    // CFontsAndTextDeviceFontsView
#include "FontsAndTextEffectsView.h"        // CFontsAndTextEffectsView


// ================= MEMBER FUNCTIONS =======================

/**
 * Symbian OS 2nd phase constructor.  Constructs the application's views, 
 * transferring ownership of them to the superclass.
 * Also sets up the navi pane to allow for 'tabbed' appearance of views  
 */    
void CFontsAndTextAppUi::ConstructL()
{
    BaseConstructL();

    // Show tabs for main views from resources
    CEikStatusPane* sp = StatusPane();

    // Fetch pointer to the default navi pane control
    iNaviPane = (CAknNavigationControlContainer*)sp->ControlL(TUid::Uid(EEikStatusPaneUidNavi));

    // Tabgroup has been read from the resource file and pushed to the navi pane. 
    // Get pointer to the navigation decorator with the ResourceDecorator() function. 
    // Application owns the decorator and it has responsibility to delete the object.
    iDecoratedTabGroup = iNaviPane->ResourceDecorator();

    if (iDecoratedTabGroup)
    {
        iTabGroup = (CAknTabGroup*)iDecoratedTabGroup->DecoratedControl();
    }

    CFontsAndTextBasicView* basicView = CFontsAndTextBasicView::NewLC();
    AddViewL(basicView);    // transfer ownership to CAknViewAppUi
    CleanupStack::Pop(basicView);

    CFontsAndTextMetricsView* metricsView = CFontsAndTextMetricsView::NewLC();
    AddViewL(metricsView);    // transfer ownership to CAknViewAppUi
    CleanupStack::Pop(metricsView);

    CFontsAndTextDeviceFontsView* deviceFontsView = CFontsAndTextDeviceFontsView::NewLC();
    AddViewL(deviceFontsView);    // transfer ownership to CAknViewAppUi
    CleanupStack::Pop(deviceFontsView);

    CFontsAndTextEffectsView* effectsView = CFontsAndTextEffectsView::NewLC();
    AddViewL(effectsView);      // transfer ownership to CAknViewAppUi
    CleanupStack::Pop(effectsView);

    SetDefaultViewL(*basicView);
}

/**
 * Destructor. Cleans up resources held on the heap
 */
CFontsAndTextAppUi::~CFontsAndTextAppUi()
{
    delete iDecoratedTabGroup;
}

/**
 * Manages key input events of moving the directional pad left or right will cause the previous
 * or next view to be displayed
 *
 * @param aKeyEvent the key event
 * @param aType not used
 *
 */
TKeyResponse CFontsAndTextAppUi::HandleKeyEventL(const TKeyEvent& aKeyEvent, TEventCode /*aType*/)
{
    if (!iTabGroup)
    {
        return EKeyWasNotConsumed;
    }

    TInt active = iTabGroup->ActiveTabIndex();
    TInt count = iTabGroup->TabCount();

    switch (aKeyEvent.iCode)
    {
        case EKeyLeftArrow:
            if (active > 0)
            {
                active--;
                iTabGroup->SetActiveTabByIndex(active);
                ActivateLocalViewL(TUid::Uid(iTabGroup->TabIdFromIndex(active)));
            }
            break;
        case EKeyRightArrow:
            if ((active + 1) < count)
            {
                active++;
                iTabGroup->SetActiveTabByIndex(active);
                ActivateLocalViewL(TUid::Uid(iTabGroup->TabIdFromIndex(active)));
            }
            break;
        default:
            return EKeyWasNotConsumed;
            break;
    }

    return EKeyWasConsumed;
}

/**
 * From CEikAppUi, takes care of command handling for both views.
 *
 * @param aCommand command to be handled
 */
void CFontsAndTextAppUi::HandleCommandL(TInt aCommand)
{
    switch (aCommand)
    {
        case EEikCmdExit:
        {
            Exit();
            break;
        }
        default:
            break;      
    }
}

// End of File