1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Assistant of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
****************************************************************************/
#include "qoptionswidget_p.h"
#include <QtWidgets/QComboBox>
#include <QtWidgets/QItemDelegate>
#include <QtWidgets/QListWidget>
#include <QtWidgets/QVBoxLayout>
QT_BEGIN_NAMESPACE
class ListWidgetDelegate : public QItemDelegate
{
public:
ListWidgetDelegate(QWidget *w) : QItemDelegate(w), m_widget(w) {}
static bool isSeparator(const QModelIndex &index) {
return index.data(Qt::AccessibleDescriptionRole).toString() == QLatin1String("separator");
}
static void setSeparator(QListWidgetItem *item) {
item->setData(Qt::AccessibleDescriptionRole, QString::fromLatin1("separator"));
item->setFlags(item->flags() & ~(Qt::ItemIsSelectable|Qt::ItemIsEnabled));
}
protected:
void paint(QPainter *painter,
const QStyleOptionViewItem &option,
const QModelIndex &index) const override {
if (isSeparator(index)) {
QRect rect = option.rect;
if (const QAbstractItemView *view = qobject_cast<const QAbstractItemView*>(option.widget))
rect.setWidth(view->viewport()->width());
QStyleOption opt;
opt.rect = rect;
m_widget->style()->drawPrimitive(QStyle::PE_IndicatorToolBarSeparator, &opt, painter, m_widget);
} else {
QItemDelegate::paint(painter, option, index);
}
}
QSize sizeHint(const QStyleOptionViewItem &option,
const QModelIndex &index) const override {
if (isSeparator(index)) {
int pm = m_widget->style()->pixelMetric(QStyle::PM_DefaultFrameWidth, nullptr, m_widget);
return QSize(pm, pm);
}
return QItemDelegate::sizeHint(option, index);
}
private:
QWidget *m_widget;
};
static QStringList subtract(const QStringList &minuend, const QStringList &subtrahend)
{
QStringList result = minuend;
for (const QString &str : subtrahend)
result.removeOne(str);
return result;
}
QOptionsWidget::QOptionsWidget(QWidget *parent)
: QWidget(parent)
, m_noOptionText(tr("No Option"))
, m_invalidOptionText(tr("Invalid Option"))
{
m_listWidget = new QListWidget(this);
m_listWidget->setItemDelegate(new ListWidgetDelegate(m_listWidget));
QVBoxLayout *layout = new QVBoxLayout(this);
layout->addWidget(m_listWidget);
layout->setContentsMargins(QMargins());
connect(m_listWidget, &QListWidget::itemChanged, this, &QOptionsWidget::itemChanged);
}
void QOptionsWidget::clear()
{
setOptions(QStringList(), QStringList());
}
void QOptionsWidget::setOptions(const QStringList &validOptions,
const QStringList &selectedOptions)
{
m_listWidget->clear();
m_optionToItem.clear();
m_itemToOption.clear();
m_validOptions = validOptions;
m_validOptions.removeDuplicates();
std::sort(m_validOptions.begin(), m_validOptions.end());
m_selectedOptions = selectedOptions;
m_selectedOptions.removeDuplicates();
std::sort(m_selectedOptions.begin(), m_selectedOptions.end());
m_invalidOptions = subtract(m_selectedOptions, m_validOptions);
const QStringList validSelectedOptions = subtract(m_selectedOptions, m_invalidOptions);
const QStringList validUnselectedOptions = subtract(m_validOptions, m_selectedOptions);
for (const QString &option : validSelectedOptions)
appendItem(option, true, true);
for (const QString &option : m_invalidOptions)
appendItem(option, false, true);
if ((validSelectedOptions.count() + m_invalidOptions.count())
&& validUnselectedOptions.count()) {
appendSeparator();
}
for (const QString &option : validUnselectedOptions) {
appendItem(option, true, false);
if (option.isEmpty() && validUnselectedOptions.count() > 1) // special No Option item
appendSeparator();
}
}
QStringList QOptionsWidget::validOptions() const
{
return m_validOptions;
}
QStringList QOptionsWidget::selectedOptions() const
{
return m_selectedOptions;
}
void QOptionsWidget::setNoOptionText(const QString &text)
{
if (m_noOptionText == text)
return;
m_noOptionText = text;
// update GUI
const auto itEnd = m_optionToItem.constEnd();
for (auto it = m_optionToItem.constBegin(); it != itEnd; ++it) {
const QString optionName = it.key();
if (optionName.isEmpty())
it.value()->setText(optionText(optionName, m_validOptions.contains(optionName)));
}
}
void QOptionsWidget::setInvalidOptionText(const QString &text)
{
if (m_invalidOptionText == text)
return;
m_invalidOptionText = text;
// update GUI
for (const QString &option : m_invalidOptions)
m_optionToItem.value(option)->setText(optionText(option, false));
}
QString QOptionsWidget::optionText(const QString &optionName, bool valid) const
{
QString text = optionName;
if (optionName.isEmpty())
text = QLatin1Char('[') + m_noOptionText + QLatin1Char(']');
if (!valid)
text += QLatin1String("\t[") + m_invalidOptionText + QLatin1Char(']');
return text;
}
QListWidgetItem *QOptionsWidget::appendItem(const QString &optionName, bool valid, bool selected)
{
QListWidgetItem *optionItem = new QListWidgetItem(optionText(optionName, valid), m_listWidget);
optionItem->setCheckState(selected ? Qt::Checked : Qt::Unchecked);
m_listWidget->insertItem(m_listWidget->count(), optionItem);
m_optionToItem[optionName] = optionItem;
m_itemToOption[optionItem] = optionName;
return optionItem;
}
void QOptionsWidget::appendSeparator()
{
QListWidgetItem *separatorItem = new QListWidgetItem(m_listWidget);
ListWidgetDelegate::setSeparator(separatorItem);
m_listWidget->insertItem(m_listWidget->count(), separatorItem);
}
void QOptionsWidget::itemChanged(QListWidgetItem *item)
{
const auto it = m_itemToOption.constFind(item);
if (it == m_itemToOption.constEnd())
return;
const QString option = *it;
if (item->checkState() == Qt::Checked && !m_selectedOptions.contains(option)) {
m_selectedOptions.append(option);
std::sort(m_selectedOptions.begin(), m_selectedOptions.end());
} else if (item->checkState() == Qt::Unchecked && m_selectedOptions.contains(option)) {
m_selectedOptions.removeOne(option);
} else {
return;
}
emit optionSelectionChanged(m_selectedOptions);
}
QT_END_NAMESPACE
|
