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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.
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qglobal.h>
#ifndef QGRAPHICSBSPTREEINDEX_H
#define QGRAPHICSBSPTREEINDEX_H
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
QT_BEGIN_NAMESPACE
#include <QtCore/qrect.h>
#include <QtCore/qlist.h>
#include <QtGui/qgraphicsitem.h>
#include <QtGui/qgraphicsscene.h>
#include <QtGui/qgraphicssceneindex.h>
#include "qgraphicsscene_bsp_p.h"
class Q_AUTOTEST_EXPORT QGraphicsSceneBspTreeIndex : public QGraphicsSceneIndex
{
Q_OBJECT
public:
QGraphicsSceneBspTreeIndex(QGraphicsScene *scene = 0);
QRectF indexedRect();
void clear();
void addItem(QGraphicsItem *item);
void removeItem(QGraphicsItem *item);
void deleteItem(QGraphicsItem *item);
void prepareBoundingRectChange(const QGraphicsItem *item);
QList<QGraphicsItem *> estimateItems(const QRectF &rect, Qt::SortOrder order, const QTransform &deviceTransform) const;
QList<QGraphicsItem *> items() const;
int bspDepth();
void setBspDepth(int depth);
protected:
bool event(QEvent *event);
void sceneRectChanged(const QRectF &rect);
public slots :
void _q_updateIndex();
private :
QGraphicsSceneBspTree bsp;
QRectF m_sceneRect;
int bspTreeDepth;
int indexTimerId;
bool restartIndexTimer;
bool regenerateIndex;
int lastItemCount;
QList<QGraphicsItem *> m_indexedItems;
QList<QGraphicsItem *> unindexedItems;
QList<int> freeItemIndexes;
bool purgePending;
QList<QGraphicsItem *> removedItems;
void purgeRemovedItems();
void startIndexTimer();
void resetIndex();
void addToIndex(QGraphicsItem *item);
void removeFromIndex(QGraphicsItem *item);
};
QT_END_NAMESPACE
#endif // QT_NO_GRAPHICSVIEW
#endif // QGRAPHICSBSPTREEINDEX_H
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