|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# imageitem.cpp Example File
sql/drilldown/imageitem.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2006-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #include "imageitem.h"

     ImageItem::ImageItem(int id, const QPixmap &pixmap, QGraphicsItem *parent,
                          QGraphicsScene *scene)
         : QGraphicsPixmapItem(pixmap, parent, scene)
     {
         recordId = id;
         setAcceptsHoverEvents(true);

         timeLine.setDuration(150);
         timeLine.setFrameRange(0, 150);

         connect(&timeLine, SIGNAL(frameChanged(int)), this, SLOT(setFrame(int)));
         connect(&timeLine, SIGNAL(finished()), this, SLOT(updateItemPosition()));

         adjust();
     }

     void ImageItem::hoverEnterEvent(QGraphicsSceneHoverEvent * /*event*/)
     {
         timeLine.setDirection(QTimeLine::Forward);

         if (z != 1.0) {
             z = 1.0;
             updateItemPosition();
         }

         if (timeLine.state() == QTimeLine::NotRunning)
             timeLine.start();
     }

     void ImageItem::hoverLeaveEvent(QGraphicsSceneHoverEvent * /*event*/)
     {
         timeLine.setDirection(QTimeLine::Backward);
         if (z != 0.0)
             z = 0.0;

         if (timeLine.state() == QTimeLine::NotRunning)
             timeLine.start();
     }

     void ImageItem::setFrame(int frame)
     {
         adjust();
         QPointF center = boundingRect().center();

         translate(center.x(), center.y());
         scale(1 + frame / 330.0, 1 + frame / 330.0);
         translate(-center.x(), -center.y());
     }

     void ImageItem::adjust()
     {
         QMatrix matrix;
         matrix.scale(150/ boundingRect().width(), 120/ boundingRect().height());
         setMatrix(matrix);
     }

     int ImageItem::id()
     {
         return recordId;
     }

     void ImageItem::updateItemPosition()
     {
         setZValue(z);
     }