Home · All Classes · All Functions · Overviews

animateditem.cpp Example File
graphicsview/portedasteroids/animateditem.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation ([email protected])
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
 ** If you have questions regarding the use of this file, please contact
 ** Nokia at [email protected].
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "animateditem.h"

 #include <QtGui/qbitmap.h>
 #include <QtGui/qpainter.h>

 AnimatedPixmapItem::AnimatedPixmapItem(const QList<QPixmap> &animation,
                                        QGraphicsScene *scene)
     : QGraphicsItem(0, scene), currentFrame(0), vx(0), vy(0)
 {
     for (int i = 0; i < animation.size(); ++i) {
         QPixmap pixmap = animation.at(i);
         Frame frame;
         frame.pixmap = pixmap;
         frame.shape = QPainterPath();
         frame.boundingRect = pixmap.rect();
         frames << frame;
     }
 }

 void AnimatedPixmapItem::setFrame(int frame)
 {
     if (!frames.isEmpty()) {
         prepareGeometryChange();
         currentFrame = frame % frames.size();
     }
 }

 void AnimatedPixmapItem::advance(int phase)
 {
     if (phase == 1)
         moveBy(vx, vy);
 }

 QRectF AnimatedPixmapItem::boundingRect() const
 {
     return frames.at(currentFrame).boundingRect;
 }

 QPainterPath AnimatedPixmapItem::shape() const
 {
     const Frame &f = frames.at(currentFrame);
     if (f.shape.isEmpty()) {
         QPainterPath path;
         path.addRegion(f.pixmap.createHeuristicMask());
         const_cast<Frame &>(f).shape = path;
     }
     return f.shape;
 }

 void AnimatedPixmapItem::paint(QPainter *painter, const QStyleOptionGraphicsItem * /*option*/,
                                QWidget * /*widget*/)
 {
     painter->drawPixmap(0, 0, frames.at(currentFrame).pixmap);
 }