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qradiobutton.cpp

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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 QtWidgets module of the Qt Toolkit.-
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37**-
38****************************************************************************/-
39-
40#include "qradiobutton.h"-
41#include "qapplication.h"-
42#include "qbitmap.h"-
43#include "qbuttongroup.h"-
44#include "qstylepainter.h"-
45#include "qstyle.h"-
46#include "qstyleoption.h"-
47#include "qevent.h"-
48-
49#include "private/qabstractbutton_p.h"-
50-
51QT_BEGIN_NAMESPACE-
52-
53class QRadioButtonPrivate : public QAbstractButtonPrivate-
54{-
55 Q_DECLARE_PUBLIC(QRadioButton)-
56-
57public:-
58 QRadioButtonPrivate() : QAbstractButtonPrivate(QSizePolicy::RadioButton), hovering(true) {}
never executed: end of block
0
59 void init();-
60 uint hovering : 1;-
61};-
62-
63/*-
64 Initializes the radio button.-
65*/-
66void QRadioButtonPrivate::init()-
67{-
68 Q_Q(QRadioButton);-
69 q->setCheckable(true);-
70 q->setAutoExclusive(true);-
71 q->setMouseTracking(true);-
72 q->setForegroundRole(QPalette::WindowText);-
73 setLayoutItemMargins(QStyle::SE_RadioButtonLayoutItem);-
74}
never executed: end of block
0
75-
76/*!-
77 \class QRadioButton-
78 \brief The QRadioButton widget provides a radio button with a text label.-
79-
80 \ingroup basicwidgets-
81 \inmodule QtWidgets-
82-
83 A QRadioButton is an option button that can be switched on (checked) or-
84 off (unchecked). Radio buttons typically present the user with a "one-
85 of many" choice. In a group of radio buttons, only one radio button at-
86 a time can be checked; if the user selects another button, the-
87 previously selected button is switched off.-
88-
89 Radio buttons are autoExclusive by default. If auto-exclusive is-
90 enabled, radio buttons that belong to the same parent widget-
91 behave as if they were part of the same exclusive button group. If-
92 you need multiple exclusive button groups for radio buttons that-
93 belong to the same parent widget, put them into a QButtonGroup.-
94-
95 Whenever a button is switched on or off, it emits the toggled() signal.-
96 Connect to this signal if you want to trigger an action each time the-
97 button changes state. Use isChecked() to see if a particular button is-
98 selected.-
99-
100 Just like QPushButton, a radio button displays text, and-
101 optionally a small icon. The icon is set with setIcon(). The text-
102 can be set in the constructor or with setText(). A shortcut key-
103 can be specified by preceding the preferred character with an-
104 ampersand in the text. For example:-
105-
106 \snippet code/src_gui_widgets_qradiobutton.cpp 0-
107-
108 In this example the shortcut is \e{Alt+c}. See the \l-
109 {QShortcut#mnemonic}{QShortcut} documentation for details. To-
110 display an actual ampersand, use '&&'.-
111-
112 Important inherited members: text(), setText(), text(),-
113 setDown(), isDown(), autoRepeat(), group(), setAutoRepeat(),-
114 toggle(), pressed(), released(), clicked(), and toggled().-
115-
116 \table 100%-
117 \row \li \inlineimage fusion-radiobutton.png Screenshot of a Fusion radio button-
118 \li A radio button shown in the \l{Fusion Style Widget Gallery}{Fusion widget style}.-
119 \row \li \inlineimage windowsvista-radiobutton.png Screenshot of a Windows Vista radio button-
120 \li A radio button shown in the \l{Windows Vista Style Widget Gallery}{Windows Vista widget style}.-
121 \row \li \inlineimage macintosh-radiobutton.png Screenshot of a Macintosh radio button-
122 \li A radio button shown in the \l{Macintosh Style Widget Gallery}{Macintosh widget style}.-
123 \endtable-
124-
125 \sa QPushButton, QToolButton, QCheckBox, {fowler}{GUI Design Handbook: Radio Button},-
126 {Group Box Example}-
127*/-
128-
129-
130/*!-
131 Constructs a radio button with the given \a parent, but with no text or-
132 pixmap.-
133-
134 The \a parent argument is passed on to the QAbstractButton constructor.-
135*/-
136-
137QRadioButton::QRadioButton(QWidget *parent)-
138 : QAbstractButton(*new QRadioButtonPrivate, parent)-
139{-
140 Q_D(QRadioButton);-
141 d->init();-
142}
never executed: end of block
0
143-
144/*!-
145 Destructor.-
146*/-
147QRadioButton::~QRadioButton()-
148{-
149}-
150-
151/*!-
152 Constructs a radio button with the given \a parent and \a text string.-
153-
154 The \a parent argument is passed on to the QAbstractButton constructor.-
155*/-
156-
157QRadioButton::QRadioButton(const QString &text, QWidget *parent)-
158 : QAbstractButton(*new QRadioButtonPrivate, parent)-
159{-
160 Q_D(QRadioButton);-
161 d->init();-
162 setText(text);-
163}
never executed: end of block
0
164-
165/*!-
166 Initialize \a option with the values from this QRadioButton. This method is useful-
167 for subclasses when they need a QStyleOptionButton, but don't want to fill-
168 in all the information themselves.-
169-
170 \sa QStyleOption::initFrom()-
171*/-
172void QRadioButton::initStyleOption(QStyleOptionButton *option) const-
173{-
174 if (!option)
!optionDescription
TRUEnever evaluated
FALSEnever evaluated
0
175 return;
never executed: return;
0
176 Q_D(const QRadioButton);-
177 option->initFrom(this);-
178 option->text = d->text;-
179 option->icon = d->icon;-
180 option->iconSize = iconSize();-
181 if (d->down)
d->downDescription
TRUEnever evaluated
FALSEnever evaluated
0
182 option->state |= QStyle::State_Sunken;
never executed: option->state |= QStyle::State_Sunken;
0
183 option->state |= (d->checked) ? QStyle::State_On : QStyle::State_Off;
(d->checked)Description
TRUEnever evaluated
FALSEnever evaluated
0
184 if (testAttribute(Qt::WA_Hover) && underMouse()) {
testAttribute(Qt::WA_Hover)Description
TRUEnever evaluated
FALSEnever evaluated
underMouse()Description
TRUEnever evaluated
FALSEnever evaluated
0
185 option->state.setFlag(QStyle::State_MouseOver, d->hovering);-
186 }
never executed: end of block
0
187}
never executed: end of block
0
188-
189/*!-
190 \reimp-
191*/-
192QSize QRadioButton::sizeHint() const-
193{-
194 Q_D(const QRadioButton);-
195 if (d->sizeHint.isValid())
d->sizeHint.isValid()Description
TRUEnever evaluated
FALSEnever evaluated
0
196 return d->sizeHint;
never executed: return d->sizeHint;
0
197 ensurePolished();-
198 QStyleOptionButton opt;-
199 initStyleOption(&opt);-
200 QSize sz = style()->itemTextRect(fontMetrics(), QRect(), Qt::TextShowMnemonic,-
201 false, text()).size();-
202 if (!opt.icon.isNull())
!opt.icon.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
203 sz = QSize(sz.width() + opt.iconSize.width() + 4, qMax(sz.height(), opt.iconSize.height()));
never executed: sz = QSize(sz.width() + opt.iconSize.width() + 4, qMax(sz.height(), opt.iconSize.height()));
0
204 d->sizeHint = (style()->sizeFromContents(QStyle::CT_RadioButton, &opt, sz, this).-
205 expandedTo(QApplication::globalStrut()));-
206 return d->sizeHint;
never executed: return d->sizeHint;
0
207}-
208-
209/*!-
210 \reimp-
211*/-
212QSize QRadioButton::minimumSizeHint() const-
213{-
214 return sizeHint();
never executed: return sizeHint();
0
215}-
216-
217/*!-
218 \reimp-
219*/-
220bool QRadioButton::hitButton(const QPoint &pos) const-
221{-
222 QStyleOptionButton opt;-
223 initStyleOption(&opt);-
224 return style()->subElementRect(QStyle::SE_RadioButtonClickRect, &opt, this).contains(pos);
never executed: return style()->subElementRect(QStyle::SE_RadioButtonClickRect, &opt, this).contains(pos);
0
225}-
226-
227/*!-
228 \reimp-
229*/-
230void QRadioButton::mouseMoveEvent(QMouseEvent *e)-
231{-
232 Q_D(QRadioButton);-
233 if (testAttribute(Qt::WA_Hover)) {
testAttribute(Qt::WA_Hover)Description
TRUEnever evaluated
FALSEnever evaluated
0
234 bool hit = false;-
235 if (underMouse())
underMouse()Description
TRUEnever evaluated
FALSEnever evaluated
0
236 hit = hitButton(e->pos());
never executed: hit = hitButton(e->pos());
0
237-
238 if (hit != d->hovering) {
hit != d->hoveringDescription
TRUEnever evaluated
FALSEnever evaluated
0
239 update();-
240 d->hovering = hit;-
241 }
never executed: end of block
0
242 }
never executed: end of block
0
243-
244 QAbstractButton::mouseMoveEvent(e);-
245}
never executed: end of block
0
246-
247/*!\reimp-
248 */-
249void QRadioButton::paintEvent(QPaintEvent *)-
250{-
251 QStylePainter p(this);-
252 QStyleOptionButton opt;-
253 initStyleOption(&opt);-
254 p.drawControl(QStyle::CE_RadioButton, opt);-
255}
never executed: end of block
0
256-
257/*! \reimp */-
258bool QRadioButton::event(QEvent *e)-
259{-
260 Q_D(QRadioButton);-
261 if (e->type() == QEvent::StyleChange
e->type() == Q...t::StyleChangeDescription
TRUEnever evaluated
FALSEnever evaluated
0
262#ifdef Q_OS_MAC-
263 || e->type() == QEvent::MacSizeChange-
264#endif-
265 )-
266 d->setLayoutItemMargins(QStyle::SE_RadioButtonLayoutItem);
never executed: d->setLayoutItemMargins(QStyle::SE_RadioButtonLayoutItem);
0
267 return QAbstractButton::event(e);
never executed: return QAbstractButton::event(e);
0
268}-
269-
270-
271QT_END_NAMESPACE-
272-
273#include "moc_qradiobutton.cpp"-
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