From f67b8df3ebdba2d398b9cce686b7c644adffff08 Mon Sep 17 00:00:00 2001 From: Lars Knoll Date: Sat, 7 May 2011 00:02:01 +0200 Subject: library split --- .../graphicsview/qgraphicsscenebsptreeindex_p.h | 206 +++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100644 src/widgets/graphicsview/qgraphicsscenebsptreeindex_p.h (limited to 'src/widgets/graphicsview/qgraphicsscenebsptreeindex_p.h') diff --git a/src/widgets/graphicsview/qgraphicsscenebsptreeindex_p.h b/src/widgets/graphicsview/qgraphicsscenebsptreeindex_p.h new file mode 100644 index 0000000000..fadf9d8a74 --- /dev/null +++ b/src/widgets/graphicsview/qgraphicsscenebsptreeindex_p.h @@ -0,0 +1,206 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore 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 Technology Preview License Agreement accompanying +** this package. +** +** 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#ifndef QGRAPHICSBSPTREEINDEX_H +#define QGRAPHICSBSPTREEINDEX_H + +#include + +#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW + +#include "qgraphicssceneindex_p.h" +#include "qgraphicsitem_p.h" +#include "qgraphicsscene_bsp_p.h" + +#include +#include + +QT_BEGIN_NAMESPACE + +static const int QGRAPHICSSCENE_INDEXTIMER_TIMEOUT = 2000; + +class QGraphicsScene; +class QGraphicsSceneBspTreeIndexPrivate; + +class Q_AUTOTEST_EXPORT QGraphicsSceneBspTreeIndex : public QGraphicsSceneIndex +{ + Q_OBJECT + Q_PROPERTY(int bspTreeDepth READ bspTreeDepth WRITE setBspTreeDepth) +public: + QGraphicsSceneBspTreeIndex(QGraphicsScene *scene = 0); + ~QGraphicsSceneBspTreeIndex(); + + QList estimateItems(const QRectF &rect, Qt::SortOrder order) const; + QList estimateTopLevelItems(const QRectF &rect, Qt::SortOrder order) const; + QList items(Qt::SortOrder order = Qt::DescendingOrder) const; + + int bspTreeDepth(); + void setBspTreeDepth(int depth); + +protected Q_SLOTS: + void updateSceneRect(const QRectF &rect); + +protected: + bool event(QEvent *event); + void clear(); + + void addItem(QGraphicsItem *item); + void removeItem(QGraphicsItem *item); + void prepareBoundingRectChange(const QGraphicsItem *item); + + void itemChange(const QGraphicsItem *item, QGraphicsItem::GraphicsItemChange change, const void *const value); + +private : + Q_DECLARE_PRIVATE(QGraphicsSceneBspTreeIndex) + Q_DISABLE_COPY(QGraphicsSceneBspTreeIndex) + Q_PRIVATE_SLOT(d_func(), void _q_updateSortCache()) + Q_PRIVATE_SLOT(d_func(), void _q_updateIndex()) + + friend class QGraphicsScene; + friend class QGraphicsScenePrivate; +}; + +class QGraphicsSceneBspTreeIndexPrivate : public QGraphicsSceneIndexPrivate +{ + Q_DECLARE_PUBLIC(QGraphicsSceneBspTreeIndex) +public: + QGraphicsSceneBspTreeIndexPrivate(QGraphicsScene *scene); + + QGraphicsSceneBspTree bsp; + QRectF sceneRect; + int bspTreeDepth; + int indexTimerId; + bool restartIndexTimer; + bool regenerateIndex; + int lastItemCount; + + QList indexedItems; + QList unindexedItems; + QList untransformableItems; + QList freeItemIndexes; + + bool purgePending; + QSet removedItems; + void purgeRemovedItems(); + + void _q_updateIndex(); + void startIndexTimer(int interval = QGRAPHICSSCENE_INDEXTIMER_TIMEOUT); + void resetIndex(); + + void _q_updateSortCache(); + bool sortCacheEnabled; + bool updatingSortCache; + void invalidateSortCache(); + void addItem(QGraphicsItem *item, bool recursive = false); + void removeItem(QGraphicsItem *item, bool recursive = false, bool moveToUnindexedItems = false); + QList estimateItems(const QRectF &, Qt::SortOrder, bool b = false); + + static void climbTree(QGraphicsItem *item, int *stackingOrder); + + static inline bool closestItemFirst_withCache(const QGraphicsItem *item1, const QGraphicsItem *item2) + { + return item1->d_ptr->globalStackingOrder < item2->d_ptr->globalStackingOrder; + } + static inline bool closestItemLast_withCache(const QGraphicsItem *item1, const QGraphicsItem *item2) + { + return item1->d_ptr->globalStackingOrder >= item2->d_ptr->globalStackingOrder; + } + + static void sortItems(QList *itemList, Qt::SortOrder order, + bool cached, bool onlyTopLevelItems = false); +}; + +static inline bool QRectF_intersects(const QRectF &s, const QRectF &r) +{ + qreal xp = s.left(); + qreal yp = s.top(); + qreal w = s.width(); + qreal h = s.height(); + qreal l1 = xp; + qreal r1 = xp; + if (w < 0) + l1 += w; + else + r1 += w; + + qreal l2 = r.left(); + qreal r2 = r.left(); + if (w < 0) + l2 += r.width(); + else + r2 += r.width(); + + if (l1 >= r2 || l2 >= r1) + return false; + + qreal t1 = yp; + qreal b1 = yp; + if (h < 0) + t1 += h; + else + b1 += h; + + qreal t2 = r.top(); + qreal b2 = r.top(); + if (r.height() < 0) + t2 += r.height(); + else + b2 += r.height(); + + return !(t1 >= b2 || t2 >= b1); +} + +QT_END_NAMESPACE + +#endif // QT_NO_GRAPHICSVIEW + +#endif // QGRAPHICSBSPTREEINDEX_H -- cgit v1.2.3