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diff --git a/examples/scroller/wheel/wheelwidget.cpp b/examples/scroller/wheel/wheelwidget.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
-** the names of its contributors may be used to endorse or promote
-** products derived from this software without specific prior written
-** permission.
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QtGui>
-
-#include "wheelwidget.h"
-
-#define WHEEL_SCROLL_OFFSET 50000.0
-
-AbstractWheelWidget::AbstractWheelWidget(bool touch, QWidget *parent)
- : QWidget(parent)
- , m_currentItem(0)
- , m_itemOffset(0)
-{
-// ![0]
- QScroller::grabGesture(this, touch ? QScroller::TouchGesture : QScroller::LeftMouseButtonGesture);
-// ![0]
-}
-
-AbstractWheelWidget::~AbstractWheelWidget()
-{ }
-
-int AbstractWheelWidget::currentIndex() const
-{
- return m_currentItem;
-}
-
-void AbstractWheelWidget::setCurrentIndex(int index)
-{
- if (index >= 0 && index < itemCount()) {
- m_currentItem = index;
- m_itemOffset = 0;
- update();
- }
-}
-
-bool AbstractWheelWidget::event(QEvent *e)
-{
- switch (e->type()) {
-// ![1]
- case QEvent::ScrollPrepare:
- {
- // We set the snap positions as late as possible so that we are sure
- // we get the correct itemHeight
- QScroller *scroller = QScroller::scroller(this);
- scroller->setSnapPositionsY( WHEEL_SCROLL_OFFSET, itemHeight() );
-
- QScrollPrepareEvent *se = static_cast<QScrollPrepareEvent *>(e);
- se->setViewportSize(QSizeF(size()));
- // we claim a huge scrolling area and a huge content position and
- // hope that the user doesn't notice that the scroll area is restricted
- se->setContentPosRange(QRectF(0.0, 0.0, 0.0, WHEEL_SCROLL_OFFSET * 2));
- se->setContentPos(QPointF(0.0, WHEEL_SCROLL_OFFSET + m_currentItem * itemHeight() + m_itemOffset));
- se->accept();
- return true;
- }
-// ![1]
-// ![2]
- case QEvent::Scroll:
- {
- QScrollEvent *se = static_cast<QScrollEvent *>(e);
-
- qreal y = se->contentPos().y();
- int iy = y - WHEEL_SCROLL_OFFSET;
- int ih = itemHeight();
-
-// ![2]
-
- // -- calculate the current item position and offset and redraw the widget
- int ic = itemCount();
- if (ic>0) {
- m_currentItem = iy / ih % ic;
- m_itemOffset = iy % ih;
-
- // take care when scrolling backwards. Modulo returns negative numbers
- if (m_itemOffset < 0) {
- m_itemOffset += ih;
- m_currentItem--;
- }
-
- if (m_currentItem < 0)
- m_currentItem += ic;
- }
- // -- repaint
- update();
-
- se->accept();
- return true;
- }
- default:
- return QWidget::event(e);
- }
- return true;
-}
-
-void AbstractWheelWidget::paintEvent(QPaintEvent* event)
-{
- Q_UNUSED( event );
-
- // -- first calculate size and position.
- int w = width();
- int h = height();
-
- QPainter painter(this);
- QPalette palette = QApplication::palette();
- QPalette::ColorGroup colorGroup = isEnabled() ? QPalette::Active : QPalette::Disabled;
-
- // linear gradient brush
- QLinearGradient grad(0.5, 0, 0.5, 1.0);
- grad.setColorAt(0, palette.color(colorGroup, QPalette::ButtonText));
- grad.setColorAt(0.2, palette.color(colorGroup, QPalette::Button));
- grad.setColorAt(0.8, palette.color(colorGroup, QPalette::Button));
- grad.setColorAt(1.0, palette.color(colorGroup, QPalette::ButtonText));
- grad.setCoordinateMode( QGradient::ObjectBoundingMode );
- QBrush gBrush( grad );
-
- // paint a border and background
- painter.setPen(palette.color(colorGroup, QPalette::ButtonText));
- painter.setBrush(gBrush);
- // painter.setBrushOrigin( QPointF( 0.0, 0.0 ) );
- painter.drawRect( 0, 0, w-1, h-1 );
-
- // paint inner border
- painter.setPen(palette.color(colorGroup, QPalette::Button));
- painter.setBrush(Qt::NoBrush);
- painter.drawRect( 1, 1, w-3, h-3 );
-
- // paint the items
- painter.setClipRect( QRect( 3, 3, w-6, h-6 ) );
- painter.setPen(palette.color(colorGroup, QPalette::ButtonText));
-
- int iH = itemHeight();
- int iC = itemCount();
- if (iC > 0) {
-
- m_itemOffset = m_itemOffset % iH;
-
- for (int i=-h/2/iH; i<=h/2/iH+1; i++) {
-
- int itemNum = m_currentItem + i;
- while (itemNum < 0)
- itemNum += iC;
- while (itemNum >= iC)
- itemNum -= iC;
-
- paintItem(&painter, itemNum, QRect(6, h/2 +i*iH - m_itemOffset - iH/2, w-6, iH ));
- }
- }
-
- // draw a transparent bar over the center
- QColor highlight = palette.color(colorGroup, QPalette::Highlight);
- highlight.setAlpha(150);
-
- QLinearGradient grad2(0.5, 0, 0.5, 1.0);
- grad2.setColorAt(0, highlight);
- grad2.setColorAt(1.0, highlight.lighter());
- grad2.setCoordinateMode( QGradient::ObjectBoundingMode );
- QBrush gBrush2( grad2 );
-
- QLinearGradient grad3(0.5, 0, 0.5, 1.0);
- grad3.setColorAt(0, highlight);
- grad3.setColorAt(1.0, highlight.darker());
- grad3.setCoordinateMode( QGradient::ObjectBoundingMode );
- QBrush gBrush3( grad3 );
-
- painter.fillRect( QRect( 0, h/2 - iH/2, w, iH/2 ), gBrush2 );
- painter.fillRect( QRect( 0, h/2, w, iH/2 ), gBrush3 );
-}
-
-/*!
- Rotates the wheel widget to a given index.
- You can also give an index greater than itemCount or less than zero in which
- case the wheel widget will scroll in the given direction and end up with
- (index % itemCount)
-*/
-void AbstractWheelWidget::scrollTo(int index)
-{
- QScroller *scroller = QScroller::scroller(this);
-
- scroller->scrollTo(QPointF(0, WHEEL_SCROLL_OFFSET + index * itemHeight()), 5000);
-}
-
-/*!
- \class StringWheelWidget
- \brief The StringWheelWidget class is an implementation of the AbstractWheelWidget class that draws QStrings as items.
- \sa AbstractWheelWidget
-*/
-
-StringWheelWidget::StringWheelWidget(bool touch)
- : AbstractWheelWidget(touch)
-{ }
-
-QStringList StringWheelWidget::items() const
-{
- return m_items;
-}
-
-void StringWheelWidget::setItems( const QStringList &items )
-{
- m_items = items;
- if (m_currentItem >= items.count())
- m_currentItem = items.count()-1;
- update();
-}
-
-
-QSize StringWheelWidget::sizeHint() const
-{
- // determine font size
- QFontMetrics fm(font());
-
- return QSize( fm.width("m") * 10 + 6, fm.height() * 7 + 6 );
-}
-
-QSize StringWheelWidget::minimumSizeHint() const
-{
- QFontMetrics fm(font());
-
- return QSize( fm.width("m") * 5 + 6, fm.height() * 3 + 6 );
-}
-
-void StringWheelWidget::paintItem(QPainter* painter, int index, const QRect &rect)
-{
- painter->drawText(rect, Qt::AlignCenter, m_items.at(index));
-}
-
-int StringWheelWidget::itemHeight() const
-{
- QFontMetrics fm(font());
- return fm.height();
-}
-
-int StringWheelWidget::itemCount() const
-{
- return m_items.count();
-}
-
-
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