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splashitem.cpp Example File
graphicsview/padnavigator/splashitem.cpp

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 #include "splashitem.h"

 #include <QtGui/QtGui>

 SplashItem::SplashItem(QGraphicsItem *parent)
     : QGraphicsWidget(parent)
 {
     opacity = 1.0;

     timeLine = new QTimeLine(350);
     timeLine->setCurveShape(QTimeLine::EaseInCurve);
     connect(timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(setValue(qreal)));

     text = tr("Welcome to the Pad Navigator Example. You can use the"
               " keyboard arrows to navigate the icons, and press enter"
               " to activate an item. Please press any key to continue.");
     resize(400, 175);
 }

 void SplashItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
 {
     painter->setOpacity(opacity);
     painter->setPen(QPen(Qt::black, 2));
     painter->setBrush(QColor(245, 245, 255, 220));
     painter->setClipRect(rect());
     painter->drawRoundRect(3, -100 + 3, 400 - 6, 250 - 6);

     QRectF textRect = rect().adjusted(10, 10, -10, -10);
     int flags = Qt::AlignTop | Qt::AlignLeft | Qt::TextWordWrap;

     QFont font;
     font.setPixelSize(18);
     painter->setPen(Qt::black);
     painter->setFont(font);
     painter->drawText(textRect, flags, text);
 }

 void SplashItem::keyPressEvent(QKeyEvent * /* event */)
 {
     if (timeLine->state() == QTimeLine::NotRunning)
         timeLine->start();
 }

 void SplashItem::setValue(qreal value)
 {
     opacity = 1 - value;
     setPos(x(), scene()->sceneRect().top() - rect().height() * value);
     if (value == 1)
         hide();
 }


Copyright © 2008 Nokia Trademarks
Qt 4.4.3