/**************************************************************************** ** ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the demonstration applications 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 1.1, 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. ** ****************************************************************************/ #ifndef DEMO_ITEM_H #define DEMO_ITEM_H #include <QtGui> class DemoItemAnimation; class Guide; class SharedImage { public: SharedImage() : refCount(0), image(0), pixmap(0){}; ~SharedImage() { delete image; delete pixmap; } int refCount; QImage *image; QPixmap *pixmap; QMatrix matrix; QRectF unscaledBoundingRect; }; class DemoItem : public QGraphicsItem { public: DemoItem(QGraphicsScene *scene = 0, QGraphicsItem *parent = 0); virtual ~DemoItem(); bool inTransition(); virtual void animationStarted(int id = 0){ Q_UNUSED(id); }; virtual void animationStopped(int id = 0){ Q_UNUSED(id); }; virtual void prepare(){}; void setRecursiveVisible(bool visible); void useSharedImage(const QString &hashKey); void setNeverVisible(bool never = true); static void setMatrix(const QMatrix &matrix); virtual QRectF boundingRect() const; // overridden void setPosUsingSheepDog(const QPointF &dest, const QRectF &sceneFence); qreal opacity; bool locked; DemoItemAnimation *currentAnimation; bool noSubPixeling; // Used if controlled by a guide: void useGuide(Guide *guide, float startFrame = 0); void guideAdvance(float distance); void guideMove(float moveSpeed); void setGuidedPos(const QPointF &position); QPointF getGuidedPos(); float startFrame; float guideFrame; Guide *currGuide; protected: virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option = 0, QWidget *widget = 0); // overridden virtual QImage *createImage(const QMatrix &) const { return 0; }; virtual bool collidesWithItem(const QGraphicsItem *, Qt::ItemSelectionMode) const { return false; }; bool prepared; private: SharedImage *sharedImage; QString hashKey; bool neverVisible; bool validateImage(); // Used if controlled by a guide: void switchGuide(Guide *guide); friend class Guide; QPointF guidedPos; // The next static hash is shared amongst all demo items, and // has the purpose of reusing images to save memory and time static QHash<QString, SharedImage *> sharedImageHash; static QMatrix matrix; }; #endif // DEMO_ITEM_H