src/hbwidgets/sliders/hbzoomslider_p.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 27 May 2010 13:10:59 +0300
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Revision: 201019 Kit: 2010121
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/****************************************************************************
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**
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (developer.feedback@nokia.com)
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**
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** This file is part of the HbWidgets module of the UI Extensions for Mobile.
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this file.
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** Please review the following information to ensure the GNU Lesser General
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** Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at developer.feedback@nokia.com.
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**
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****************************************************************************/
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#include "hbzoomslider_p.h"
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#include "hbslider_p.h"
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#include "hbnamespace_p.h"
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#include "hbinstance.h"
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#include "hbwidget.h"
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#include "hbslidercontrol_p.h"
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#include <QGraphicsSceneEvent>
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#include <QGraphicsScene>
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/*!
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    Example usage:
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    \code
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    HbSlider *slider = new HbSlider(Qt::Horizontal);
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    QList<HbSlider::SliderElement> sliderElements;
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    sliderElements.append(HbSlider::DecreaseElement);
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    sliderElements.append(HbSlider::TrackElement);
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    sliderElements.append(HbSlider::IncreaseElement);
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    sliderElements.append(HbSlider::IconElement);
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    sliderElements.append(HbSlider::TextElement);
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    slider->setElements(sliderElements);
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    slider->setRange(0, 100);
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    slider->setMajorTickInterval(50);
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    slider->setTickPosition(Hb::SliderTicksLeft);
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    // decreaseIcon is valid HbIcon
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    slider->setIcon(HbSlider::DecreaseElement, decreaseIcon);
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    // increaseIcon is valid HbIcon
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    slider->setIcon(HbSlider:: IncreaseElement, increaseIcon);
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    // icon is valid HbIcon
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    slider->setIcon(HbSlider:: IncreaseElement,icon);
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    slider->setText( "1%");
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    \endcode
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    @hbwidgets
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    \class HbZoomSlider
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    \brief HbZoomSlider widget provides a vertical zoom slider.
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    HbZoomSlider is provided for convenience. HbZoomSlider sets appropriate
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    icons, properties and provides zoom slider specific functionality like a
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    zoom level indicator label and appropriate elements out of the box.
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    HbZoomSlider sets HbSlider::text  and consists of following
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    slider elements by default:
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    \li HbSlider::IncreaseElement
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    \li HbSlider::TrackElement
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    \li HbSlider::DecreaseElement
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    \li HbSlider::TextElement
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    \image html hbzoomslider.png A vertical zoom slider.
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    The elements can be changed by calling HbSlider::setElements( ) later at any time.
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    \note order of element can not be changed
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    Orientation of HbZoomSlider can not be changed. If orientation change is need, 
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    then first create HbSlider and set needed elements.
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    Note:: if setElement is called on this slider , application is reponsible for
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    inconsitent UI.
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*/
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class HbZoomSliderPrivate : public HbSliderPrivate
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{
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    Q_DECLARE_PUBLIC( HbZoomSlider )
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public:
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    HbZoomSliderPrivate( );
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    virtual ~HbZoomSliderPrivate( );
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    void init( );
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    // zoom slider can have default level set by Apps
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    bool mDefaultSet;
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    int mDefaultZoomLevel;
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    void _q_resetToDefault( );
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};
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HbZoomSliderPrivate::HbZoomSliderPrivate( )
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{
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}
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HbZoomSliderPrivate::~HbZoomSliderPrivate( )
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{
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}
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/*!
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    creates slider element and set default values
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 */
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void HbZoomSliderPrivate::init( )
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{
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    Q_Q( HbZoomSlider );
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    mDefaultSet = false;
3
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    sliderControl->setToolTipVisible(false);
0
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    QList<HbSlider::SliderElement> elements;
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    elements << HbSlider::IncreaseElement 
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        << HbSlider::TrackElement 
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        << HbSlider::DecreaseElement 
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        << HbSlider::TextElement;
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    setElements( elements );
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     // create element because HbSlider will not create element for NULL Icon
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    // and zoom slider Icon is set in style
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    if ( !elementItemMap.contains(HbSlider::IncreaseElement) ) {
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        elementItemMap[HbSlider::IncreaseElement].item = 
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            q->style( )->createPrimitive( HbStyle::P_SliderElement_increase, q);
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        HbStyle::setItemName( elementItemMap[HbSlider::IncreaseElement].item, "increment-icon" );
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        elementItemMap[HbSlider::IncreaseElement].type= HbStyle::P_SliderElement_increase;
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        elementItemMap[HbSlider::IncreaseElement].touchItem = 
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            q->style( )->createPrimitive( HbStyle::P_SliderElement_touchincrease,q );
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        HbStyle::setItemName( elementItemMap[HbSlider::IncreaseElement].touchItem, "increment-icon-toucharea" );
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    }
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    if ( !elementItemMap.contains(HbSlider::DecreaseElement) ) {
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        elementItemMap[HbSlider::DecreaseElement].item = 
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            q->style( )->createPrimitive( HbStyle::P_SliderElement_decrease, q);
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        elementItemMap[HbSlider::DecreaseElement].type = HbStyle::P_SliderElement_decrease;
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        HbStyle::setItemName( elementItemMap[HbSlider::DecreaseElement].item, "decrement-icon" );
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        elementItemMap[HbSlider::DecreaseElement].touchItem = q->style( )->createPrimitive( HbStyle::P_SliderElement_touchdecrease,q ) ;
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        HbStyle::setItemName( elementItemMap[HbSlider::DecreaseElement].touchItem, "decrement-icon-toucharea" );
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    }
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    HbStyleOptionSlider option;
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    q->initStyleOption( &option );
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    option.sliderElementIcon = icons.value( HbSlider::IncreaseElement ); 
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    q->style( )->updatePrimitive(elementItemMap[HbSlider::IncreaseElement].item ,HbStyle::P_SliderElement_increase,&option );
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    option.sliderElementIcon = icons.value( HbSlider::DecreaseElement ); 
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    q->style( )->updatePrimitive(elementItemMap[HbSlider::DecreaseElement].item ,HbStyle::P_SliderElement_decrease,&option );
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    q->setFlags( QGraphicsItem::ItemIsFocusable );
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    q->connect( q, SIGNAL( textClicked( ) ), q, SLOT( _q_resetToDefault( ) ) );
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    q->setProperty("changeincrementState" ,false);
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    q->setProperty("changedecrementState" ,false);
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    q->setProperty("state", "normal");
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}
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/*!
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    This slot will be called when ever there is click on text
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    this will set zoom level to default if specified by Application
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 */
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void HbZoomSliderPrivate::_q_resetToDefault( )
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{
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    Q_Q( HbZoomSlider );
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    if( mDefaultSet ) {
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        q->setValue( q->defaultZoomLevel( ) );
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    }
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}
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/*!   
0
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    Constructs a zoom slider with \a parent.
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    The orientation is \b Qt::Vertical and the slider contains increase, track, 
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    decrease and text elements by default.
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    \sa setOrientation( ), setElements( )
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*/
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HbZoomSlider::HbZoomSlider( QGraphicsItem *parent )
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    : HbSlider( *new HbZoomSliderPrivate, parent )
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{
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    Q_D( HbZoomSlider );
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    d->q_ptr = this;
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    d->init( );
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    // UX specifies that the default step value for zoom slider should be 10
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    setSingleStep( 10 );
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}
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/*!
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    Destroys the zoom slider.
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*/
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HbZoomSlider::~HbZoomSlider( )
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{
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}
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/*!
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    Returns the default Zoom Level of the zoom slider if set by application
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    otherwise returns minimum value. 
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    \sa setDefaultZoomLevel( )
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*/
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int HbZoomSlider::defaultZoomLevel( ) const
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{
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    Q_D( const HbZoomSlider );
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    if( d->mDefaultSet ) {
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         return d->mDefaultZoomLevel;
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    } else {
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         return minimum( );
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    }
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}
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2
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/*!   
0
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    sets the default Zoom Level of the zoom slider with \a value.
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    if not set minimum( ) value will be used for default value.
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    \sa defaultZoomLevel( )
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*/
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void HbZoomSlider::setDefaultZoomLevel( int value )
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{
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    Q_D( HbZoomSlider );
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    d->mDefaultSet=true;
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    //bound check
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    if( value > minimum( ) && value < maximum( ) ) {
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        d->mDefaultZoomLevel=value;
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    }
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}
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   234
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2
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/*!   
0
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    \reimp
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    This is not supported in HbZoomSlider
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 */
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void HbZoomSlider::setToolTipVisible( bool /*b*/ )
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{
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    Q_ASSERT_X( false, "HbZoomSlider::setToolTipVisible( )", 
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        "Current value display as tooltip is not supported in zoom slider" );
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}
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   246
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/*!
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    \reimp
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 */
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void HbZoomSlider::mousePressEvent( QGraphicsSceneMouseEvent *event )
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{
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    Q_D( HbZoomSlider );
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   253
    if( d->elementItemMap.contains(HbSlider::IncreaseElement) ) {
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   254
        if ( d->elementItemMap[HbSlider::IncreaseElement].touchItem->isUnderMouse( ) ) {
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            setProperty("changeincrementState" ,true);
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   256
            setProperty("changedecrementState" ,false);
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            setProperty("state", "pressed"); 
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   258
        }
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   259
    }
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   260
    if( d->elementItemMap.contains(HbSlider::DecreaseElement) ) {
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   261
        if ( d->elementItemMap[HbSlider::DecreaseElement].touchItem->isUnderMouse( ) ) {
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   262
            setProperty("changeincrementState" ,false);
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   263
            setProperty("changedecrementState" ,true);
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   264
            setProperty("state", "pressed"); 
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   265
        }
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   266
    }
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   267
   
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   268
    HbSlider::mousePressEvent( event );
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   269
}
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parents:
diff changeset
   270
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   271
/*!
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   272
    \reimp
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   273
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   274
 */
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   275
void HbZoomSlider::mouseReleaseEvent( QGraphicsSceneMouseEvent *event )
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   276
{
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   277
    Q_D( HbZoomSlider );
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   278
    HbSlider::mouseReleaseEvent( event );
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   279
    d->stopRepeatAction( );
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   280
    setProperty("changeincrementState" ,false);
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   281
    setProperty("changedecrementState" ,false);
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   282
    setProperty("state", "normal"); 
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   283
}
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diff changeset
   284
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   285
/*!
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   286
    \reimp
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   287
 */
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   288
QVariant HbZoomSlider::itemChange( GraphicsItemChange change, const QVariant &value )
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   289
{
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   290
    Q_D( HbZoomSlider );
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   291
    switch ( static_cast<HbPrivate::HbItemChangeValues>( change ) ) {
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   292
      case ItemVisibleHasChanged:
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   293
            if( !value.toBool( ) ){
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   294
                if( d->sliderControl ){
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   295
                    d->sliderControl->setSliderDown( false );
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parents:
diff changeset
   296
                }
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   297
                setProperty("changeincrementState" ,false);
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   298
                setProperty("changedecrementState" ,false);
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   299
                setProperty("state", "normal");  
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   300
             }
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parents:
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   301
            break;
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parents:
diff changeset
   302
        default:
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parents:
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   303
            break;
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parents:
diff changeset
   304
    }
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parents:
diff changeset
   305
    return HbSlider::itemChange( change, value );
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diff changeset
   306
}
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parents:
diff changeset
   307
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diff changeset
   308
/*!
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diff changeset
   309
    \reimp
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diff changeset
   310
 */
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diff changeset
   311
void HbZoomSlider::initStyleOption( HbStyleOptionSlider *option ) const
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diff changeset
   312
{
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   313
    option->sliderType=HbStyleOptionSlider::ZoomType;
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parents:
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   314
    HbSlider::initStyleOption( option );
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parents:
diff changeset
   315
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parents:
diff changeset
   316
}
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parents:
diff changeset
   317
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parents:
diff changeset
   318
/*!
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parents:
diff changeset
   319
    \reimp
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parents:
diff changeset
   320
 */
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parents:
diff changeset
   321
void HbZoomSlider::focusInEvent( QFocusEvent *event )
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parents:
diff changeset
   322
{
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diff changeset
   323
    Q_UNUSED( event );
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parents:
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   324
    Q_D( HbZoomSlider );
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parents:
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   325
    d->sliderControl->setFocus( );
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parents:
diff changeset
   326
}
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parents:
diff changeset
   327
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   328
#include "moc_hbzoomslider_p.cpp"
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parents:
diff changeset
   329