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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtGui module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 /*! |
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43 \class QGraphicsSceneLinearIndex |
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44 \brief The QGraphicsSceneLinearIndex class provides an implementation of |
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45 a linear indexing algorithm for discovering items in QGraphicsScene. |
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46 \since 4.6 |
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47 \ingroup graphicsview-api |
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48 \internal |
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49 |
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50 QGraphicsSceneLinearIndex index is default linear implementation to discover items. |
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51 It basically store all items in a list and return them to the scene. |
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52 |
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53 \sa QGraphicsScene, QGraphicsView, QGraphicsSceneIndex, QGraphicsSceneBspTreeIndex |
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54 */ |
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55 |
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56 #include <private/qgraphicsscenelinearindex_p.h> |
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57 |
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58 /*! |
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59 \fn QGraphicsSceneLinearIndex::QGraphicsSceneLinearIndex(QGraphicsScene *scene = 0): |
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60 |
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61 Construct a linear index for the given \a scene. |
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62 */ |
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63 |
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64 /*! |
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65 \fn QList<QGraphicsItem *> QGraphicsSceneLinearIndex::items(Qt::SortOrder order = Qt::DescendingOrder) const; |
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66 |
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67 Return all items in the index and sort them using \a order. |
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68 */ |
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69 |
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70 |
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71 /*! |
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72 \fn virtual QList<QGraphicsItem *> QGraphicsSceneLinearIndex::estimateItems(const QRectF &rect, Qt::SortOrder order) const |
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73 |
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74 Returns an estimation visible items that are either inside or |
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75 intersect with the specified \a rect and return a list sorted using \a order. |
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76 */ |
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77 |
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78 /*! |
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79 \fn void QGraphicsSceneLinearIndex::clear() |
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80 \internal |
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81 Clear the all the BSP index. |
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82 */ |
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83 |
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84 /*! |
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85 \fn virtual void QGraphicsSceneLinearIndex::addItem(QGraphicsItem *item) |
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86 |
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87 Add the \a item into the index. |
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88 */ |
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89 |
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90 /*! |
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91 \fn virtual void QGraphicsSceneLinearIndex::removeItem(QGraphicsItem *item) |
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92 |
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93 Add the \a item from the index. |
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94 */ |
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95 |