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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 examples 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 #include <QtGui> |
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43 |
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44 #include "stardelegate.h" |
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45 #include "stareditor.h" |
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46 #include "starrating.h" |
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47 |
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48 //! [0] |
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49 void StarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, |
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50 const QModelIndex &index) const |
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51 { |
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52 if (qVariantCanConvert<StarRating>(index.data())) { |
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53 StarRating starRating = qVariantValue<StarRating>(index.data()); |
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54 |
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55 if (option.state & QStyle::State_Selected) |
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56 painter->fillRect(option.rect, option.palette.highlight()); |
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57 |
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58 starRating.paint(painter, option.rect, option.palette, |
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59 StarRating::ReadOnly); |
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60 } else { |
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61 QStyledItemDelegate::paint(painter, option, index); |
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62 } |
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63 //! [0] |
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64 } |
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65 |
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66 //! [1] |
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67 QSize StarDelegate::sizeHint(const QStyleOptionViewItem &option, |
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68 const QModelIndex &index) const |
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69 { |
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70 if (qVariantCanConvert<StarRating>(index.data())) { |
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71 StarRating starRating = qVariantValue<StarRating>(index.data()); |
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72 return starRating.sizeHint(); |
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73 } else { |
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74 return QStyledItemDelegate::sizeHint(option, index); |
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75 } |
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76 } |
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77 //! [1] |
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78 |
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79 //! [2] |
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80 QWidget *StarDelegate::createEditor(QWidget *parent, |
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81 const QStyleOptionViewItem &option, |
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82 const QModelIndex &index) const |
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83 |
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84 { |
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85 if (qVariantCanConvert<StarRating>(index.data())) { |
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86 StarEditor *editor = new StarEditor(parent); |
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87 connect(editor, SIGNAL(editingFinished()), |
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88 this, SLOT(commitAndCloseEditor())); |
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89 return editor; |
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90 } else { |
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91 return QStyledItemDelegate::createEditor(parent, option, index); |
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92 } |
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93 } |
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94 //! [2] |
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95 |
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96 //! [3] |
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97 void StarDelegate::setEditorData(QWidget *editor, |
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98 const QModelIndex &index) const |
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99 { |
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100 if (qVariantCanConvert<StarRating>(index.data())) { |
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101 StarRating starRating = qVariantValue<StarRating>(index.data()); |
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102 StarEditor *starEditor = qobject_cast<StarEditor *>(editor); |
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103 starEditor->setStarRating(starRating); |
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104 } else { |
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105 QStyledItemDelegate::setEditorData(editor, index); |
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106 } |
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107 } |
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108 //! [3] |
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109 |
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110 //! [4] |
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111 void StarDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, |
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112 const QModelIndex &index) const |
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113 { |
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114 if (qVariantCanConvert<StarRating>(index.data())) { |
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115 StarEditor *starEditor = qobject_cast<StarEditor *>(editor); |
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116 model->setData(index, qVariantFromValue(starEditor->starRating())); |
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117 } else { |
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118 QStyledItemDelegate::setModelData(editor, model, index); |
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119 } |
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120 } |
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121 //! [4] |
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122 |
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123 //! [5] |
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124 void StarDelegate::commitAndCloseEditor() |
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125 { |
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126 StarEditor *editor = qobject_cast<StarEditor *>(sender()); |
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127 emit commitData(editor); |
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128 emit closeEditor(editor); |
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129 } |
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130 //! [5] |