aknexslidersaveform.cpp

symbian 中 滚动条的使用 可以用在亮度

/*  Copyright (c) 2004, Nokia. All rights reserved */

#include <eikcapc.h>

// INCLUDE FILES
#include <aknslider.h> // for slider
#include "AknExSliderSaveForm.h"

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

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::NewL()
// Two-phased constructor.
// ----------------------------------------------------------------------------
//
CAknExSliderSaveForm* CAknExSliderSaveForm::NewL()
    {
    CAknExSliderSaveForm* self = new ( ELeave ) CAknExSliderSaveForm();
    CleanupStack::PushL( self );
    self->ConstructL();
    CleanupStack::Pop();
    return self;
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::~CAknExSliderSaveForm()
// Destructor.
// ----------------------------------------------------------------------------
//
CAknExSliderSaveForm::~CAknExSliderSaveForm()
    {
    }


// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::CAknExSliderSaveForm()
// Default constructor.
// ----------------------------------------------------------------------------
//
CAknExSliderSaveForm::CAknExSliderSaveForm()
    {
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::ConstructL()
// Second-phase constructor.
// ----------------------------------------------------------------------------
//
void CAknExSliderSaveForm::ConstructL()
    {
    CAknForm::ConstructL();
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::SetFormData()
// Set form data.
// ----------------------------------------------------------------------------
//
void CAknExSliderSaveForm::SetFormData()
    {
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::SaveFormDataL()
// Save form data.
// ----------------------------------------------------------------------------
//
TBool CAknExSliderSaveForm::SaveFormDataL()
    {
    CAknSlider* slider = ( CAknSlider* ) ControlOrNull( EAknExSliderDlgId );
    if ( slider )
        {
        iSliderValue = slider->Value();

        TPtrC sliderLabel = Line( EAknExSliderDlgId )->GetFullCaptionText();
        iSliderLabel = sliderLabel;
        }

    return ETrue;
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::DoNotSaveFormDataL()
// Does not save form data.
// ----------------------------------------------------------------------------
//
void CAknExSliderSaveForm::DoNotSaveFormDataL()
    {
    CAknSlider* slider = ( CAknSlider* ) ControlOrNull( EAknExSliderDlgId );
    if ( slider )
        {
        slider->SetValueL( iSliderValue );

        TRAPD( e, Line( EAknExSliderDlgId )->SetCaptionL( iSliderLabel ) );
        Line( EAknExSliderDlgId )->iCaption->CropText();
        }
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::PostLayoutDynInitL()
// Set default field value to member data.
// ----------------------------------------------------------------------------
//
void CAknExSliderSaveForm::PostLayoutDynInitL()
    {
    CAknForm::PostLayoutDynInitL();
    SaveFormDataL();
    }

// ----------------------------------------------------------------------------
// CAknExSliderSaveForm::QuerySaveChangesL()
// Show save query. If user answers "No" to this query.
// return field value to the value which is before editing.
// This is called Back-softkey when edit mode.
// ----------------------------------------------------------------------------
//
TBool CAknExSliderSaveForm::QuerySaveChangesL()
    {
    TBool isAnsYes( CAknForm::QuerySaveChangesL() );

    if ( isAnsYes )
        {
        SaveFormDataL();
        }
    else 
        {
        // Case that answer "No" to query.
        DoNotSaveFormDataL();
        }

    return isAnsYes;
    }

// End of File