1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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6 | **
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7 | ** This file is part of the Qt3Support module of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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14 | ** a written agreement between you and Nokia.
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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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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 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at [email protected].
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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 | #include "q3gridview.h"
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44 | #include "qpainter.h"
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45 |
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46 | QT_BEGIN_NAMESPACE
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47 |
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48 | using namespace Qt;
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49 |
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50 | /*!
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51 | \class Q3GridView
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52 | \brief The Q3GridView class provides an abstract base for
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53 | fixed-size grids.
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54 |
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55 | \compat
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56 |
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57 | A grid view consists of a number of abstract cells organized in
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58 | rows and columns. The cells have a fixed size and are identified
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59 | with a row index and a column index. The top-left cell is in row
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60 | 0, column 0. The bottom-right cell is in row numRows()-1, column
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61 | numCols()-1.
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62 |
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63 | You can define \l{Q3GridView::numRows} {numRows},
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64 | \l{Q3GridView::numCols} {numCols}, \l{Q3GridView::cellWidth}
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65 | {cellWidth} and \l{Q3GridView::cellHeight} {cellHeight}. Reimplement
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66 | the pure virtual function paintCell() to draw the contents of a
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67 | cell.
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68 |
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69 | With ensureCellVisible(), you can ensure a certain cell is
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70 | visible. With rowAt() and columnAt() you can find a cell based on
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71 | the given x- and y-coordinates.
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72 |
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73 | If you need to monitor changes to the grid's dimensions (i.e. when
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74 | numRows or numCols is changed), reimplement the dimensionChange()
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75 | change handler.
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76 |
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77 | Note: the row and column indices are always given in the order,
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78 | row (vertical offset) then column (horizontal offset). This order
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79 | is the opposite of all pixel operations, which are given in the
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80 | order x (horizontal offset), y (vertical offset).
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81 |
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