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     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the examples of the Qt Toolkit.

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    40 ****************************************************************************/

    41 

    42 #include "layoutitem.h"

    43 

    44 //! [0]

    45 LayoutItem::LayoutItem(QGraphicsItem *parent/* = 0*/)

    46     : QGraphicsLayoutItem(), QGraphicsItem(parent)

    47 {

    48     m_pix = new QPixmap(QLatin1String(":/images/block.png"));

    49     setGraphicsItem(this);

    50 }

    51 //! [0]

    52 

    53 LayoutItem::~LayoutItem()

    54 {

    55     delete m_pix;

    56 }

    57 

    58 //! [1]

    59 void LayoutItem::paint(QPainter *painter,

    60     const QStyleOptionGraphicsItem *option, QWidget *widget /*= 0*/)

    61 {

    62     Q_UNUSED(widget);

    63     Q_UNUSED(option);

    64 

    65     QRectF frame(QPointF(0,0), geometry().size());

    66     qreal w = m_pix->width();

    67     qreal h = m_pix->height();

    68     QGradientStops stops;

    69 //! [1]

    70 

    71 //! [2]

    72     // paint a background rect (with gradient)

    73     QLinearGradient gradient(frame.topLeft(), frame.topLeft() + QPointF(200,200));

    74     stops << QGradientStop(0.0, QColor(60, 60,  60));

    75     stops << QGradientStop(frame.height()/2/frame.height(), QColor(102, 176, 54));

    76 

    77     //stops << QGradientStop(((frame.height() + h)/2 )/frame.height(), QColor(157, 195,  55));

    78     stops << QGradientStop(1.0, QColor(215, 215, 215));

    79     gradient.setStops(stops);

    80     painter->setBrush(QBrush(gradient));

    81     painter->drawRoundedRect(frame, 10.0, 10.0);

    82 

    83     // paint a rect around the pixmap (with gradient)

    84     QPointF pixpos = frame.center() - (QPointF(w, h)/2);

    85     QRectF innerFrame(pixpos, QSizeF(w, h));

    86     innerFrame.adjust(-4, -4, +4, +4);

    87     gradient.setStart(innerFrame.topLeft());

    88     gradient.setFinalStop(innerFrame.bottomRight());

    89     stops.clear();

    90     stops << QGradientStop(0.0, QColor(215, 255, 200));

    91     stops << QGradientStop(0.5, QColor(102, 176, 54));

    92     stops << QGradientStop(1.0, QColor(0, 0,  0));

    93     gradient.setStops(stops);

    94     painter->setBrush(QBrush(gradient));

    95     painter->drawRoundedRect(innerFrame, 10.0, 10.0);

    96     painter->drawPixmap(pixpos, *m_pix);

    97 }

    98 //! [2]

    99 

   100 //! [3]

   101 QRectF LayoutItem::boundingRect() const

   102 {

   103     return QRectF(QPointF(0,0), geometry().size());

   104 }

   105 //! [3]

   106 

   107 //! [4]

   108 void LayoutItem::setGeometry(const QRectF &geom)

   109 {

   110     prepareGeometryChange();

   111     QGraphicsLayoutItem::setGeometry(geom);

   112     setPos(geom.topLeft());

   113 }

   114 //! [4]

   115 

   116 //! [5]

   117 QSizeF LayoutItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const

   118 {

   119     switch (which) {

   120     case Qt::MinimumSize:

   121     case Qt::PreferredSize:

   122         // Do not allow a size smaller than the pixmap with two frames around it.

   123         return m_pix->size() + QSize(12, 12);

   124     case Qt::MaximumSize:

   125         return QSizeF(1000,1000);

   126     default:

   127         break;

   128     }

   129     return constraint;

   130 }

   131 //! [5]