/****************************************************************************+
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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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+
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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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#ifdef HB_GESTURE_FW +
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#include <hbtapgesture.h>+
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#endif+
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+
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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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+
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    \endcode+
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+
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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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+
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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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+
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    \image html hbzoomslider.png A vertical zoom slider.+
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+
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    The elements can be changed by calling HbSlider::setElements( ) later at any time.+
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+
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    \note order of element can not be changed+
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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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/*!+
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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;+
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    sliderControl->setToolTipVisible(false);+
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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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#ifdef HB_GESTURE_FW    +
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    q->grabGesture(Qt::TapGesture);+
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#endif +
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+
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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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+
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    if ( !elementItemMap.contains(HbSlider::IncreaseElement) ) {+
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        elementItemMap[HbSlider::IncreaseElement].item = +
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            HbStylePrivate::createPrimitive( HbStylePrivate::P_SliderElement_increase, q);+
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        HbStyle::setItemName( elementItemMap[HbSlider::IncreaseElement].item, "increment-icon" );+
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        elementItemMap[HbSlider::IncreaseElement].type= HbStylePrivate::P_SliderElement_increase;+
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        elementItemMap[HbSlider::IncreaseElement].touchItem = +
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            HbStylePrivate::createPrimitive( HbStylePrivate::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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+
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    if ( !elementItemMap.contains(HbSlider::DecreaseElement) ) {+
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        elementItemMap[HbSlider::DecreaseElement].item = +
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            HbStylePrivate::createPrimitive( HbStylePrivate::P_SliderElement_decrease, q);+
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        elementItemMap[HbSlider::DecreaseElement].type = HbStylePrivate::P_SliderElement_decrease;+
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        HbStyle::setItemName( elementItemMap[HbSlider::DecreaseElement].item, "decrement-icon" );+
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        elementItemMap[HbSlider::DecreaseElement].touchItem = HbStylePrivate::createPrimitive( HbStylePrivate::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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+
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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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    HbStylePrivate::updatePrimitive(elementItemMap[HbSlider::IncreaseElement].item ,HbStylePrivate::P_SliderElement_increase,&option );+
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    option.sliderElementIcon = icons.value( HbSlider::DecreaseElement ); +
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    HbStylePrivate::updatePrimitive(elementItemMap[HbSlider::DecreaseElement].item ,HbStylePrivate::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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/*!+
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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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+
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+
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/*!   +
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    Constructs a zoom slider with \a parent.+
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+
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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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+
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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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/*!+
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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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+
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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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+
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    \sa setDefaultZoomLevel( )+
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+
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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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+
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+
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/*!   +
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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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+
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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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+
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+
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/*!   +
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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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}+
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+
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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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#ifndef HB_GESTURE_FW +
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    Q_D( HbZoomSlider );+
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    if( d->elementItemMap.contains(HbSlider::IncreaseElement) ) {+
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        if ( d->elementItemMap[HbSlider::IncreaseElement].touchItem->isUnderMouse( ) ) {+
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            setProperty("changeincrementState" ,true);+
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            setProperty("changedecrementState" ,false);+
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            setProperty("state", "pressed"); +
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        }+
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    }+
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    if( d->elementItemMap.contains(HbSlider::DecreaseElement) ) {+
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        if ( d->elementItemMap[HbSlider::DecreaseElement].touchItem->isUnderMouse( ) ) {+
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            setProperty("changeincrementState" ,false);+
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            setProperty("changedecrementState" ,true);+
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            setProperty("state", "pressed"); +
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        }+
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    }+
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   +
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    HbSlider::mousePressEvent( event );+
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#else+
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    Q_UNUSED(event)+
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#endif +
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}+
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+
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/*!+
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    \reimp+
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+
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 */+
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void HbZoomSlider::mouseReleaseEvent( QGraphicsSceneMouseEvent *event )+
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{+
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#ifndef HB_GESTURE_FW +
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    Q_D( HbZoomSlider );+
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    HbSlider::mouseReleaseEvent( event );+
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    d->stopRepeatAction( );+
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    setProperty("changeincrementState" ,false);+
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    setProperty("changedecrementState" ,false);+
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    setProperty("state", "normal"); +
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#else+
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    Q_UNUSED (event)+
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#endif +
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}+
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/*!+
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    \reimp+
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 */+
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void HbZoomSlider::gestureEvent(QGestureEvent *event)+
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{ +
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    Q_D(HbZoomSlider);+
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    //consume the event if gesture is on increment or decrement+
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    if (HbTapGesture *tap = qobject_cast<HbTapGesture *>(event->gesture(Qt::TapGesture))) {+
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        QPointF pos = event->mapToGraphicsScene(tap->position());+
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        switch( tap->state( ) ) {+
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            case Qt::GestureStarted: {+
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                if ( d->elementItemMap.contains (HbSlider::IncreaseElement ) ) {+
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                    if (d->elementItemMap[HbSlider::IncreaseElement].touchItem ) {+
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                        if (d->elementItemMap[HbSlider::IncreaseElement].touchItem->sceneBoundingRect().contains(pos)) {+
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                            setProperty("changeincrementState" ,true);+
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                            setProperty("changedecrementState" ,false);+
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                            setProperty("state", "pressed"); +
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+
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                        }+
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                    }+
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                }+
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                if ( d->elementItemMap.contains (HbSlider::DecreaseElement ) ) {+
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                    if (d->elementItemMap[HbSlider::DecreaseElement].touchItem ) {+
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                        if (d->elementItemMap[HbSlider::DecreaseElement].touchItem->sceneBoundingRect().contains(pos))  {+
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                            setProperty("changeincrementState" ,false);+
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                            setProperty("changedecrementState" ,true);+
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                            setProperty("state", "pressed"); +
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                        }+
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                    }+
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                }+
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            }+
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            break;+
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            case Qt::GestureCanceled:+
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            case Qt::GestureFinished:     {       +
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                setProperty("changeincrementState" ,false);+
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                setProperty("changedecrementState" ,false);+
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                setProperty("state", "normal");        +
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                } +
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            default:+
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                break;+
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+
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+
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        }+
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    }+
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    HbSlider::gestureEvent(event);       +
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}+
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+
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/*!+
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    \reimp+
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 */+
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QVariant HbZoomSlider::itemChange( GraphicsItemChange change, const QVariant &value )+
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{+
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    Q_D( HbZoomSlider );+
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    switch ( static_cast<HbPrivate::HbItemChangeValues>( change ) ) {+
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      case ItemVisibleHasChanged:+
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            if( !value.toBool( ) ){+
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                if( d->sliderControl ){+
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                    d->sliderControl->setSliderDown( false );+
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                }+
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                setProperty("changeincrementState" ,false);+
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                setProperty("changedecrementState" ,false);+
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                setProperty("state", "normal");  +
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             }+
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            break;+
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        default:+
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            break;+
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    }+
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    return HbSlider::itemChange( change, value );+
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}+
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+
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/*!+
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    \reimp+
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 */+
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void HbZoomSlider::initStyleOption( HbStyleOptionSlider *option ) const+
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{+
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    option->sliderType=HbStyleOptionSlider::ZoomType;+
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    HbSlider::initStyleOption( option );+
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+
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}+
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+
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/*!+
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    \reimp+
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 */+
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void HbZoomSlider::focusInEvent( QFocusEvent *event )+
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{+
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    Q_UNUSED( event );+
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    Q_D( HbZoomSlider );+
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    d->sliderControl->setFocus( );+
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}+
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+
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#include "moc_hbzoomslider_p.cpp"+
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+
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