fontsandtextmetricsview.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 147 行

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

// INCLUDE FILES

// Class includes
#include "FontsAndTextMetricsView.h"

// System includes
#include <aknviewappui.h>    // CAknViewAppUi
#include <FontsAndText.rsg>    // R_FONTSANDTEXT_METRICSVIEW

// User Includes
#include  "FontsAndTextMetricsContainer.h"    // CFontsAndTextMetricsContainer

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

/** 
 * Destructor.  Frees up memory for the iContainer.
 * Also removes the Control from the control stack
 */
CFontsAndTextMetricsView::~CFontsAndTextMetricsView()
{
    if (iContainer)
    {
        AppUi()->RemoveFromViewStack(*this, iContainer);
    }

    delete iContainer;
}


/**
 * Symbian OS 2 phase constructor.
 * Constructs the CFontsAndTextMetricsView using the NewLC method, popping
 * the constructed object from the CleanupStack before returning it.
 * 
 * @return The newly constructed CFontsAndTextMetricsView
 */
CFontsAndTextMetricsView* CFontsAndTextMetricsView::NewL()
{
    CFontsAndTextMetricsView* self = CFontsAndTextMetricsView::NewLC();
    CleanupStack::Pop(self);
    return self;
}

/**
 * Symbian OS 2 phase constructor.
 * Constructs the CFontsAndTextMetricsView using the constructor and ConstructL 
 * method, leaving the constructed object on the CleanupStack before returning it.
 * 
 * @return The newly constructed CFontsAndTextMetricsView
 */
CFontsAndTextMetricsView* CFontsAndTextMetricsView::NewLC()
{
    CFontsAndTextMetricsView* self = new (ELeave) CFontsAndTextMetricsView();
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
}

/**
 * Symbian OS 2nd phase constructor.  
 * Uses the superclass constructor to construct the view using the 
 * R_FONTSANDTEXT_METRICSVIEW resource.
 */ 
void CFontsAndTextMetricsView::ConstructL()
{
    BaseConstructL(R_FONTSANDTEXT_METRICSVIEW);
}

/**
 * Called by the framework
 * @return The Uid for this view
 */
TUid CFontsAndTextMetricsView::Id() const
{
    return KMetricsViewId;
}

/**
 * From CEikAppUi, takes care of command handling for this view.
 *
 * @param aCommand command to be handled
 */
void CFontsAndTextMetricsView::HandleCommandL(TInt aCommand)
{
    switch (aCommand)
    {
        case EAknSoftkeyBack:
        {
            AppUi()->HandleCommandL(EEikCmdExit);
            break;
        }
        default:
        {
            AppUi()->HandleCommandL(aCommand);
            break;
        }
    }
}

/**
 * Called by the framework when the view is activated.  Constructs the 
 * container if necessary, setting this view as its MOP parent, and 
 * adding it to the control stack.
 *
 * @param aPrevViewId not used
 * @param aCustomMessageId not used
 * @param aCustomMessage not used
 */
void CFontsAndTextMetricsView::DoActivateL(
    const TVwsViewId& /*aPrevViewId*/,
    TUid /*aCustomMessageId*/,
    const TDesC8& /*aCustomMessage*/)
{
    if (!iContainer)
    {
        iContainer = CFontsAndTextMetricsContainer::NewL(ClientRect());
        iContainer->SetMopParent(this);
        AppUi()->AddToStackL(*this, iContainer);
    }
}

/**
 * Called by the framework when the view is deactivated.  
 * Removes the container from the control stack and deletes it.
 */
void CFontsAndTextMetricsView::DoDeactivate()
{
    if (iContainer)
    {
        AppUi()->RemoveFromViewStack(*this, iContainer);
    }

    delete iContainer;
    iContainer = NULL;
}

// End of File