1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#include <QtWidgets>
52
53#include "stardelegate.h"
54#include "stareditor.h"
55#include "starrating.h"
56
57//! [0]
58void StarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
59 const QModelIndex &index) const
60{
61 if (index.data().canConvert<StarRating>()) {
62 StarRating starRating = qvariant_cast<StarRating>(index.data());
63
64 if (option.state & QStyle::State_Selected)
65 painter->fillRect(option.rect, option.palette.highlight());
66
67 starRating.paint(painter, option.rect, option.palette,
68 StarRating::EditMode::ReadOnly);
69 } else {
70 QStyledItemDelegate::paint(painter, option, index);
71 }
72//! [0]
73}
74
75//! [1]
76QSize StarDelegate::sizeHint(const QStyleOptionViewItem &option,
77 const QModelIndex &index) const
78{
79 if (index.data().canConvert<StarRating>()) {
80 StarRating starRating = qvariant_cast<StarRating>(index.data());
81 return starRating.sizeHint();
82 }
83 return QStyledItemDelegate::sizeHint(option, index);
84}
85//! [1]
86
87//! [2]
88QWidget *StarDelegate::createEditor(QWidget *parent,
89 const QStyleOptionViewItem &option,
90 const QModelIndex &index) const
91
92{
93 if (index.data().canConvert<StarRating>()) {
94 StarEditor *editor = new StarEditor(parent);
95 connect(editor, &StarEditor::editingFinished,
96 this, &StarDelegate::commitAndCloseEditor);
97 return editor;
98 }
99 return QStyledItemDelegate::createEditor(parent, option, index);
100}
101//! [2]
102
103//! [3]
104void StarDelegate::setEditorData(QWidget *editor,
105 const QModelIndex &index) const
106{
107 if (index.data().canConvert<StarRating>()) {
108 StarRating starRating = qvariant_cast<StarRating>(index.data());
109 StarEditor *starEditor = qobject_cast<StarEditor *>(editor);
110 starEditor->setStarRating(starRating);
111 } else {
112 QStyledItemDelegate::setEditorData(editor, index);
113 }
114}
115//! [3]
116
117//! [4]
118void StarDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
119 const QModelIndex &index) const
120{
121 if (index.data().canConvert<StarRating>()) {
122 StarEditor *starEditor = qobject_cast<StarEditor *>(editor);
123 model->setData(index, QVariant::fromValue(starEditor->starRating()));
124 } else {
125 QStyledItemDelegate::setModelData(editor, model, index);
126 }
127}
128//! [4]
129
130//! [5]
131void StarDelegate::commitAndCloseEditor()
132{
133 StarEditor *editor = qobject_cast<StarEditor *>(sender());
134 emit commitData(editor);
135 emit closeEditor(editor);
136}
137//! [5]
138