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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, 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 are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGRAPHICSSCENEINDEX_H
#define QGRAPHICSSCENEINDEX_H
#include <QtCore/qnamespace.h>
#include <QtCore/qobject.h>
#include <QtGui/qtransform.h>
#include <QtGui/qgraphicsitem.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
class QGraphicsSceneIndexPrivate;
class QGraphicsScene;
class QRectF;
class QPointF;
template<typename T> class QList;
class Q_GUI_EXPORT QGraphicsSceneIndex: public QObject
{
Q_OBJECT
public:
QGraphicsSceneIndex(QGraphicsScene *scene = 0);
virtual ~QGraphicsSceneIndex();
QGraphicsScene *scene() const;
virtual QRectF indexedRect() const;
virtual QList<QGraphicsItem *> items(Qt::SortOrder order = Qt::AscendingOrder) const = 0;
virtual QList<QGraphicsItem *> items(const QPointF &pos, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QRectF &rect, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QPolygonF &polygon, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode, Qt::SortOrder order, const QTransform &deviceTransform = QTransform()) const;
virtual QList<QGraphicsItem *> estimateItems(const QPointF &point, Qt::SortOrder order, const QTransform &deviceTransform) const;
virtual QList<QGraphicsItem *> estimateItems(const QRectF &rect, Qt::SortOrder order, const QTransform &deviceTransform) const = 0;
protected:
virtual void clear();
virtual void addItem(QGraphicsItem *item) = 0;
virtual void removeItem(QGraphicsItem *item) = 0;
virtual void deleteItem(QGraphicsItem *item);
virtual void itemChanged(const QGraphicsItem *item, QGraphicsItem::GraphicsItemChange, const QVariant &value);
virtual void prepareBoundingRectChange(const QGraphicsItem *item);
virtual void sceneRectChanged(const QRectF &rect);
QGraphicsSceneIndex(QObjectPrivate &dd, QGraphicsScene *scene);
friend class QGraphicsScene;
friend class QGraphicsScenePrivate;
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
friend class QGraphicsSceneBspTreeIndex;
private:
Q_DISABLE_COPY(QGraphicsSceneIndex)
Q_DECLARE_PRIVATE(QGraphicsSceneIndex)
};
#endif // QT_NO_GRAPHICSVIEW
QT_END_NAMESPACE
QT_END_HEADER
#endif // QGRAPHICSSCENEINDEX_H
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