examples/graphicsview/padnavigator/splashitem.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:46:37 +0200
branchRCL_3
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "splashitem.h"
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#include <QtGui/QtGui>
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SplashItem::SplashItem(QGraphicsItem *parent)
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    : QGraphicsWidget(parent)
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{
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    opacity = 1.0;
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    timeLine = new QTimeLine(350);
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    timeLine->setCurveShape(QTimeLine::EaseInCurve);
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    connect(timeLine, SIGNAL(valueChanged(qreal)), this, SLOT(setValue(qreal)));
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    text = tr("Welcome to the Pad Navigator Example. You can use the"
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              " keyboard arrows to navigate the icons, and press enter"
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              " to activate an item. Please press any key to continue.");
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    resize(400, 175);
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}
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void SplashItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
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{
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    painter->setOpacity(opacity);
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    painter->setPen(QPen(Qt::black, 2));
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    painter->setBrush(QColor(245, 245, 255, 220));
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    painter->setClipRect(rect());
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    painter->drawRoundRect(3, -100 + 3, 400 - 6, 250 - 6);
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    QRectF textRect = rect().adjusted(10, 10, -10, -10);
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    int flags = Qt::AlignTop | Qt::AlignLeft | Qt::TextWordWrap;
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    QFont font;
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    font.setPixelSize(18);
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    painter->setPen(Qt::black);
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    painter->setFont(font);
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    painter->drawText(textRect, flags, text);
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}
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void SplashItem::keyPressEvent(QKeyEvent * /* event */)
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{
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    if (timeLine->state() == QTimeLine::NotRunning)
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        timeLine->start();
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}
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void SplashItem::setValue(qreal value)
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{
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    opacity = 1 - value;
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    setPos(x(), scene()->sceneRect().top() - rect().height() * value);
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    if (value == 1)
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        hide();
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}