/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbWidgets module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbslidertickmarks_p.h"

#include "hbwidget_p.h"

#include "hbslidercontrol_p.h"

#include "hbsliderhandle_p.h"

#include <hbstyle.h>

#include <hbstyleoptionslider.h>

#include <hbstyle.h>

#include <hbapplication.h>

#include <hbiconitem.h>

#include <QList>

class HbSliderTickmarksPrivate : public HbWidgetPrivate

{

    Q_DECLARE_PUBLIC( HbSliderTickmarks )

public:

    HbSliderTickmarksPrivate();

    void createTicks( );

    void updateTickSize( );

    HbStyleOptionSlider sliderOption;

    QList<QGraphicsWidget *> tickmarkmajorIcons;

    QList<QGraphicsWidget *> tickmarkminorIcons;

    HbSliderControl *sliderControl;

    Hb::SliderTickPositions tickPosition;

    bool createIcons;

    int majorTickWidth;

    int minorTickWidth;

    int majorTickHeight;

    int minorTickHeight;

};

 HbSliderTickmarksPrivate::HbSliderTickmarksPrivate() :HbWidgetPrivate(){

    tickmarkmajorIcons.clear();

    tickmarkminorIcons.clear();

    sliderControl = 0;

    tickPosition = Hb::NoSliderTicks;

    createIcons = true;

    majorTickWidth = 0;

    minorTickWidth = 0;

    majorTickHeight = 0;

    minorTickHeight = 0;

}

void  HbSliderTickmarksPrivate::createTicks(  )

{

    Q_Q ( HbSliderTickmarks );

    if(!createIcons){

        return;

    }

    int minimum = sliderControl->minimum();

    int maximum = sliderControl->maximum();

    int majorTickInterval = sliderControl->majorTickInterval ( );

    int minorTickInterval = sliderControl->minorTickInterval ( );

    if (majorTickInterval) {

        int totalMajorTicks = ((maximum-minimum)/majorTickInterval)+1;

        int majorIconListLength =  tickmarkmajorIcons.length();

        for (int i=majorIconListLength;i<totalMajorTicks;i++) {

            QGraphicsItem *iconItem = q->style()->createPrimitive(HbStyle::P_SliderTickMark_majoricon, q);

            Q_ASSERT(iconItem->isWidget());

            tickmarkmajorIcons.append(static_cast<QGraphicsWidget *>(iconItem));//add newly defind primitive

        }

        while ( totalMajorTicks < tickmarkmajorIcons.length() ) {

            QGraphicsWidget *iconItem = tickmarkmajorIcons.at(totalMajorTicks);

            tickmarkmajorIcons.removeAll(iconItem);

            delete iconItem;

        }

    }

    if ( minorTickInterval > 0) {

        int totalMinorTicks = ((maximum-minimum)/minorTickInterval)+1;

        if ( majorTickInterval ) {

            int maximumMinorTicks = totalMinorTicks;

            for (int i=0;i< maximumMinorTicks;i++ ) {

                if ((i*minorTickInterval)%majorTickInterval==0) {

                    totalMinorTicks--;

                }

            }

        }

        int minorIconListLength =  tickmarkminorIcons.length();

        for (int i=minorIconListLength;i<totalMinorTicks;i++) {

            QGraphicsItem *iconItem =  q->style()->createPrimitive(HbStyle::P_SliderTickMark_minoricon, q);

            Q_ASSERT(iconItem->isWidget());

            tickmarkminorIcons.append(static_cast<QGraphicsWidget *>(iconItem));//add newly defind primitive

        }

        while (totalMinorTicks < tickmarkminorIcons.length() ){

            QGraphicsWidget *iconItem = tickmarkminorIcons.at(totalMinorTicks);

            tickmarkminorIcons.removeAll(iconItem);

            delete iconItem;

        }

    } else {

        while (tickmarkminorIcons.length() > 0 ){

            QGraphicsWidget *iconItem = tickmarkminorIcons.at(0);

            tickmarkminorIcons.removeAll(iconItem);

            delete iconItem;

        }

    }

    q->setProperty("state", "normal"); 

}

void HbSliderTickmarksPrivate::updateTickSize()

{

    for(int i=0;i<tickmarkmajorIcons.length();i++) {

        tickmarkmajorIcons.at(i)->setMinimumSize(majorTickWidth,majorTickHeight);

        tickmarkmajorIcons.at(i)->setMaximumSize(majorTickWidth,majorTickHeight);

    }

    for(int i=0;i<tickmarkminorIcons.length();i++) {

        tickmarkminorIcons.at(i)->setMinimumSize(minorTickWidth,minorTickHeight);

        tickmarkminorIcons.at(i)->setMaximumSize(minorTickWidth,minorTickHeight);

    }

}

void HbSliderTickmarks::resizeEvent(QGraphicsSceneResizeEvent *event)

{

    Q_UNUSED (event);

    HbWidget::resizeEvent( event );

    repolish();

}

/*!

    This class is internal to slider ,

    this creates ticks mark widget in slider

*/

/*!

    constructor

*/

HbSliderTickmarks::HbSliderTickmarks( QGraphicsItem *parent )

    : HbWidget( *new HbSliderTickmarksPrivate, parent )

{

    Q_D( HbSliderTickmarks );

    d->q_ptr = this;

    d->sliderControl=dynamic_cast<HbSliderControl*>( parentItem() );

    d->createTicks();

}

/*!

    destructor

*/

HbSliderTickmarks::~HbSliderTickmarks()

{

}

void HbSliderTickmarks::createIcons( bool create ) 

{

    Q_D(HbSliderTickmarks);

    d->createIcons = create;

    if (!create) {

        while ( d->tickmarkmajorIcons.length() > 0) {

            QGraphicsWidget *iconItem = d->tickmarkmajorIcons.at(0);

            d->tickmarkmajorIcons.removeAll(iconItem);

            delete iconItem;

        }

        while ( d->tickmarkminorIcons.length() > 0) {

            QGraphicsWidget *iconItem = d->tickmarkminorIcons.at(0);

            d->tickmarkminorIcons.removeAll(iconItem);

            delete iconItem;

        }

    } else {

        d->createTicks();

    }

 }

/*!

    updates the ticks whenever there is change in position or number of ticks

*/

void HbSliderTickmarks::updateTicks( )

{

    Q_D ( HbSliderTickmarks );

    if(!d->createIcons) {

        return;

    }

    d->createTicks();

    d->updateTickSize();

    int minimum = d->sliderControl->minimum();

    int maximum = d->sliderControl->maximum();

    int majorTickInterval = d->sliderControl->majorTickInterval ( );

    int minorTickInterval = d->sliderControl->minorTickInterval ( );

    qreal span = 0;

    bool rtlLayout = (((d->sliderControl->orientation()!=Qt::Vertical)&&

        (HbApplication::layoutDirection() == Qt::LeftToRight))?false:true);

    HbSliderHandle *handle = dynamic_cast <HbSliderHandle *> (d->sliderControl->primitive (HbStyle::P_Slider_thumb));

    if ( d->sliderControl->orientation() == Qt::Horizontal) {

        span = d->sliderControl->size().width();

        span-=handle->size().width();

    }

    if ( d->sliderControl->orientation() == Qt::Vertical) {

        span = d->sliderControl->size().height();

        span-=handle->size().height();

    }

    if (majorTickInterval) {

        int totalMajorTicks = ((maximum-minimum)/majorTickInterval)+1;

        for (int i=0;i<totalMajorTicks;i++) {

             QGraphicsWidget *iconItem = d->tickmarkmajorIcons.at ( i);

             HbStyleOptionSlider opt;

             initStyleOption(&opt);

             opt.orientation = d->sliderControl->orientation();

             style()->updatePrimitive(iconItem,HbStyle::P_SliderTickMark_majoricon,&opt);

            int pos = QStyle::sliderPositionFromValue( minimum, maximum,

                minimum+majorTickInterval*i,static_cast<int>( span ), rtlLayout );

            if ( d->sliderControl->orientation() == Qt::Horizontal) {

                qreal correctedPosX = handle->size().width()/2+pos; 

                qreal correctedPosY = 0;

                iconItem->setPos ( correctedPosX,correctedPosY );

                iconItem->update();

            } else {

                qreal correctedPosY = handle->size().height()/2+pos;

                qreal correctedPosX =0;

                iconItem->setPos ( correctedPosX,correctedPosY );

                iconItem->update();

            }

        }

    }

    if (minorTickInterval) {

        int totalminorTicks = ((maximum-minimum)/minorTickInterval)+1;

        int minorIndex = 0;

        for (int i=0;i<totalminorTicks;i++) {

            if (majorTickInterval ) {

                if (i*minorTickInterval%majorTickInterval== 0) {

                    continue;

                }

            }

            QGraphicsWidget *iconItem = d->tickmarkminorIcons.at ( minorIndex);

            minorIndex++;

            HbStyleOptionSlider opt;

            initStyleOption(&opt);

            opt.orientation = d->sliderControl->orientation();

            style()->updatePrimitive(iconItem,HbStyle::P_SliderTickMark_minoricon,&opt);

            int pos = QStyle::sliderPositionFromValue( minimum, maximum,

                minimum+minorTickInterval*i,static_cast<int>( span ), rtlLayout );

            if ( d->sliderControl->orientation() == Qt::Horizontal) {

                qreal correctedPosX = handle->size().width()/2+pos; 

                qreal correctedPosY = 0;

                iconItem->setPos ( correctedPosX,correctedPosY );

                iconItem->update();

            } else {

                qreal correctedPosY = handle->size().height()/2+pos;

                qreal correctedPosX =0;

                iconItem->setPos ( correctedPosX,correctedPosY );

                iconItem->update();

            }

        }

    }

 }

/* !

    Sets the position of current tick

*/

void HbSliderTickmarks::setTickPosition(Hb::SliderTickPositions position)

{

    Q_D(HbSliderTickmarks);

    d->tickPosition = position;

}

/*!

    \reimp

    This api update the primitive when ever item enable has changed

 */

QVariant HbSliderTickmarks::itemChange( GraphicsItemChange change, const QVariant &value )

{

    switch( change )

    {

        case ItemChildAddedChange:

        case ItemChildRemovedChange:

            repolish();

            break;

        default:

            break;

    }

    return HbWidget::itemChange( change, value );

}

void HbSliderTickmarks::polish( HbStyleParameters& params )

{

    Q_D (HbSliderTickmarks);

    params.addParameter("fixed-width-major");

    params.addParameter("fixed-height-major");

    params.addParameter("fixed-width-minor");

    params.addParameter("fixed-height-minor");

    HbWidget::polish(params);

    d->majorTickWidth = params.value("fixed-width-major").toInt();

    d->majorTickHeight = params.value("fixed-height-major").toInt();

    d->minorTickWidth = params.value("fixed-width-minor").toInt();

    d->minorTickHeight = params.value("fixed-height-minor").toInt();

    updateTicks();

}

 //end of file