1 /*

     2  * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3  * All rights reserved.

     4  * This component and the accompanying materials are made available

     5  * under the terms of "Eclipse Public License v1.0"

     6  * which accompanies this distribution, and is available

     7  * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8  *

     9  * Initial Contributors:

    10  * Nokia Corporation - initial contribution.

    11  *

    12  * Contributors:

    13  *

    14  * Description:  CalenDayHourScrollArea implementation.

    15  *

    16  */

    17 

    18 // System includes

    19 #include <QGraphicsLinearLayout>

    20 

    21 // User includes

    22 #include "calendayhourscrollarea.h"

    23 #include "calendayhourelement.h"

    24 #include "calendayutils.h"

    25 

    26 /*!

    27  \class CalenDayHourScrollArea

    28  \brief Scrollable container class for hour elements.

    29  

    30  It handles vertical scrolling.

    31  */

    32 

    33 /*!

    34  \brief Constructor

    35  

    36  Configures scroll area settings and resets internal stares of widget.

    37  Gets the width of device.

    38  

    39  \param parent The parent of scroll area widget

    40  */

    41 CalenDayHourScrollArea::CalenDayHourScrollArea(QGraphicsItem *parent) :

    42     HbScrollArea(parent),

    43     mDateTime(QDateTime())

    44 {

    45     // Set scroll settings

    46     setScrollDirections(Qt::Vertical);

    47     setScrollingStyle(HbScrollArea::PanWithFollowOn);

    48     setVerticalScrollBarPolicy(HbScrollArea::ScrollBarAlwaysOff);

    49     grabGesture(Qt::PanGesture, Qt::ReceivePartialGestures);

    50     

    51     // Get height and width of hour elements and set fixed size policy

    52     qreal hourElementHeight = CalenDayUtils::instance()->hourElementHeight();

    53     qreal hourElementWidth = CalenDayUtils::instance()->hourElementWidth();

    54 

    55     // Create widget for hour elements

    56     HbWidget *hourWidget = new HbWidget();

    57 

    58     // Create and insert hour elements into vertical layout

    59     QGraphicsLinearLayout* hourLayout = new QGraphicsLinearLayout(Qt::Vertical,

    60         NULL);

    61     for (int i = 0; i < 24; i++) {

    62         CalenDayHourElement* element = new CalenDayHourElement(QTime(i, 0),

    63             this);

    64         element->setPreferredWidth(hourElementWidth);

    65         element->setPreferredHeight(hourElementHeight);

    66         element->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, 

    67             QSizePolicy::Fixed));

    68         hourLayout->addItem(element);

    69         

    70         mHourElements.append(element);

    71     }

    72     

    73     hourLayout->setContentsMargins(0.0, 0.0, 0.0, 0.0);

    74     hourLayout->setSpacing(0.0);

    75     

    76     // Fix the size of scroll area

    77     setMinimumWidth(hourElementWidth);

    78     setMaximumWidth(hourElementWidth);

    79 

    80     // Apply hour layout for new widget and set content widget to scroll area

    81     hourWidget->setLayout(hourLayout);

    82     setContentWidget(hourWidget);

    83 }

    84 

    85 /*!

    86  \brief Destructor

    87  */

    88 CalenDayHourScrollArea::~CalenDayHourScrollArea()

    89 {

    90 }

    91 

    92 /*!

    93  \brief SLOT scrolls the view vertically to new position.

    94  

    95  \param newPosition New position

    96  */

    97 void CalenDayHourScrollArea::scrollVertically(const QPointF &newPosition)

    98 {

    99     QPointF currentPos = contentWidget()->pos();

   100     if (abs(newPosition.y()) != abs(currentPos.y())) {

   101         currentPos.setY(newPosition.y());

   102         scrollContentsTo(currentPos, 0);

   103     }

   104 }

   105 

   106 /*!

   107  \brief Sets date and time for this container.  

   108  

   109  \param dateTime new date and time

   110  */

   111 void CalenDayHourScrollArea::setDateTime(const QDateTime &dateTime)

   112 {

   113     mDateTime = dateTime;

   114 }

   115 /*!

   116  \brief Returns date and time assigned to current view.

   117 */

   118 QDateTime CalenDayHourScrollArea::dateTime() const

   119 {

   120     return mDateTime;

   121 }

   122 

   123 /*!

   124  \brief Scroll view to given hour.

   125  

   126   \param  An hour In 24 hour format (0 - 23)

   127 */

   128 void CalenDayHourScrollArea::scrollToHour(int hour)

   129 {

   130     CalenDayHourElement *hourElement = mHourElements.at(hour); 

   131     QRectF hourElementRect = hourElement->rect();

   132     hourElementRect = hourElement->mapRectToParent(hourElementRect);

   133     QPointF newPos = hourElementRect.topLeft();

   134     

   135     //Ensure that we won't scroll out of bound

   136     CalenDayHourElement *lastElement = mHourElements.last();

   137     qreal bottomEdge = lastElement->mapRectToParent(lastElement->rect()).bottom();

   138     qreal viewHeight = rect().height();

   139 

   140     if(bottomEdge - newPos.y() < viewHeight){

   141         newPos.setY(bottomEdge - viewHeight);

   142     }

   143     

   144     scrollContentsTo(newPos);

   145 }

   146 

   147 // End of File