| 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 | ** Contact: Qt Software Information (qt-info@nokia.com) | 
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| 5 | ** | 
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| 6 | ** This file is part of the QtGui module of the Qt Toolkit. | 
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| 7 | ** | 
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| 8 | ** $QT_BEGIN_LICENSE:LGPL$ | 
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| 9 | ** Commercial Usage | 
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| 10 | ** Licensees holding valid Qt Commercial licenses may use this file in | 
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| 11 | ** accordance with the Qt Commercial License Agreement provided with the | 
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| 12 | ** Software or, alternatively, in accordance with the terms contained in | 
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| 13 | ** a written agreement between you and Nokia. | 
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| 14 | ** | 
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| 15 | ** GNU Lesser General Public License Usage | 
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| 16 | ** Alternatively, this file may be used under the terms of the GNU Lesser | 
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| 17 | ** General Public License version 2.1 as published by the Free Software | 
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| 18 | ** Foundation and appearing in the file LICENSE.LGPL included in the | 
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| 19 | ** packaging of this file.  Please review the following information to | 
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| 20 | ** ensure the GNU Lesser General Public License version 2.1 requirements | 
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| 21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. | 
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| 22 | ** | 
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| 23 | ** In addition, as a special exception, Nokia gives you certain | 
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| 24 | ** additional rights. These rights are described in the Nokia Qt LGPL | 
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| 25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this | 
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| 26 | ** 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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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the | 
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| 32 | ** packaging of this file.  Please review the following information to | 
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be | 
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html. | 
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| 35 | ** | 
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| 36 | ** If you are unsure which license is appropriate for your use, please | 
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| 37 | ** contact the sales department at qt-sales@nokia.com. | 
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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 "qgroupbox.h" | 
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| 43 | #ifndef QT_NO_GROUPBOX | 
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| 44 | #include "qapplication.h" | 
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| 45 | #include "qbitmap.h" | 
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| 46 | #include "qdrawutil.h" | 
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| 47 | #include "qevent.h" | 
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| 48 | #include "qlayout.h" | 
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| 49 | #include "qradiobutton.h" | 
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| 50 | #include "qstyle.h" | 
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| 51 | #include "qstyleoption.h" | 
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| 52 | #include "qstylepainter.h" | 
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| 53 | #ifndef QT_NO_ACCESSIBILITY | 
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| 54 | #include "qaccessible.h" | 
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| 55 | #endif | 
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| 56 | #include <private/qwidget_p.h> | 
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| 57 |  | 
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| 58 | #include "qdebug.h" | 
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| 59 |  | 
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| 60 | QT_BEGIN_NAMESPACE | 
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| 61 |  | 
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| 62 | class QGroupBoxPrivate : public QWidgetPrivate | 
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| 63 | { | 
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| 64 | Q_DECLARE_PUBLIC(QGroupBox) | 
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| 65 |  | 
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| 66 | public: | 
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| 67 | void skip(); | 
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| 68 | void init(); | 
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| 69 | void calculateFrame(); | 
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| 70 | QString title; | 
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| 71 | int align; | 
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| 72 | #ifndef QT_NO_SHORTCUT | 
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| 73 | int shortcutId; | 
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| 74 | #endif | 
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| 75 |  | 
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| 76 | void _q_fixFocus(Qt::FocusReason reason); | 
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| 77 | void _q_setChildrenEnabled(bool b); | 
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| 78 | void click(); | 
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| 79 | bool flat; | 
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| 80 | bool checkable; | 
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| 81 | bool checked; | 
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| 82 | bool hover; | 
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| 83 | bool overCheckBox; | 
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| 84 | QStyle::SubControl pressedControl; | 
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| 85 | }; | 
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| 86 |  | 
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| 87 | /*! | 
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| 88 | Initialize \a option with the values from this QGroupBox. This method | 
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| 89 | is useful for subclasses when they need a QStyleOptionGroupBox, but don't want | 
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| 90 | to fill in all the information themselves. | 
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| 91 |  | 
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| 92 | \sa QStyleOption::initFrom() | 
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| 93 | */ | 
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| 94 | void QGroupBox::initStyleOption(QStyleOptionGroupBox *option) const | 
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| 95 | { | 
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| 96 | if (!option) | 
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| 97 | return; | 
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| 98 |  | 
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| 99 | Q_D(const QGroupBox); | 
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| 100 | option->initFrom(this); | 
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| 101 | option->text = d->title; | 
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| 102 | option->lineWidth = 1; | 
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| 103 | option->midLineWidth = 0; | 
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| 104 | option->textAlignment = Qt::Alignment(d->align); | 
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| 105 | option->activeSubControls |= d->pressedControl; | 
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| 106 | option->subControls = QStyle::SC_GroupBoxFrame; | 
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| 107 |  | 
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| 108 | if (d->hover) | 
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| 109 | option->state |= QStyle::State_MouseOver; | 
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| 110 | else | 
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| 111 | option->state &= ~QStyle::State_MouseOver; | 
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| 112 |  | 
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| 113 | if (d->flat) | 
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| 114 | option->features |= QStyleOptionFrameV2::Flat; | 
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| 115 |  | 
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| 116 | if (d->checkable) { | 
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| 117 | option->subControls |= QStyle::SC_GroupBoxCheckBox; | 
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| 118 | option->state |= (d->checked ? QStyle::State_On : QStyle::State_Off); | 
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| 119 | if ((d->pressedControl == QStyle::SC_GroupBoxCheckBox | 
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| 120 | || d->pressedControl == QStyle::SC_GroupBoxLabel) && (d->hover || d->overCheckBox)) | 
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| 121 | option->state |= QStyle::State_Sunken; | 
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| 122 | } | 
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| 123 |  | 
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| 124 | if (!option->palette.isBrushSet(isEnabled() ? QPalette::Active : | 
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| 125 | QPalette::Disabled, QPalette::WindowText)) | 
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| 126 | option->textColor = QColor(style()->styleHint(QStyle::SH_GroupBox_TextLabelColor, | 
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| 127 | option, this)); | 
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| 128 |  | 
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| 129 | if (!d->title.isEmpty()) | 
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| 130 | option->subControls |= QStyle::SC_GroupBoxLabel; | 
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| 131 | } | 
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| 132 |  | 
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| 133 | void QGroupBoxPrivate::click() | 
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| 134 | { | 
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| 135 | Q_Q(QGroupBox); | 
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| 136 |  | 
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| 137 | QPointer<QGroupBox> guard(q); | 
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| 138 | q->setChecked(!checked); | 
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| 139 | if (!guard) | 
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| 140 | return; | 
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| 141 | emit q->clicked(checked); | 
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| 142 | } | 
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| 143 |  | 
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| 144 | /*! | 
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| 145 | \class QGroupBox | 
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| 146 | \brief The QGroupBox widget provides a group box frame with a title. | 
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| 147 |  | 
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| 148 | \ingroup organizers | 
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| 149 | \ingroup geomanagement | 
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| 150 | \ingroup appearance | 
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| 151 | \mainclass | 
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| 152 |  | 
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| 153 | A group box provides a frame, a title and a keyboard shortcut, and | 
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| 154 | displays various other widgets inside itself. The title is on top, | 
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| 155 | the keyboard shortcut moves keyboard focus to one of the group | 
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| 156 | box's child widgets. | 
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| 157 |  | 
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| 158 | QGroupBox also lets you set the \l title (normally set in the | 
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| 159 | constructor) and the title's \l alignment. Group boxes can be | 
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| 160 | \l checkable; child widgets in checkable group boxes are enabled or | 
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| 161 | disabled depending on whether or not the group box is \l checked. | 
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| 162 |  | 
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| 163 | You can minimize the space consumption of a group box by enabling | 
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| 164 | the \l flat property. In most \l{QStyle}{styles}, enabling this | 
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| 165 | property results in the removal of the left, right and bottom | 
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| 166 | edges of the frame. | 
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| 167 |  | 
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| 168 | QGroupBox doesn't automatically lay out the child widgets (which | 
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| 169 | are often \l{QCheckBox}es or \l{QRadioButton}s but can be any | 
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| 170 | widgets). The following example shows how we can set up a | 
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| 171 | QGroupBox with a layout: | 
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| 172 |  | 
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| 173 | \snippet examples/widgets/groupbox/window.cpp 2 | 
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| 174 |  | 
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| 175 | \table 100% | 
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| 176 | \row \o \inlineimage windowsxp-groupbox.png Screenshot of a Windows XP style group box | 
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| 177 | \o \inlineimage macintosh-groupbox.png Screenshot of a Macintosh style group box | 
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| 178 | \o \inlineimage plastique-groupbox.png Screenshot of a Plastique style group box | 
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| 179 | \row \o A \l{Windows XP Style Widget Gallery}{Windows XP style} group box. | 
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| 180 | \o A \l{Macintosh Style Widget Gallery}{Macintosh style} group box. | 
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| 181 | \o A \l{Plastique Style Widget Gallery}{Plastique style} group box. | 
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| 182 | \endtable | 
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| 183 |  | 
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| 184 | \sa QButtonGroup, {Group Box Example} | 
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| 185 | */ | 
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| 186 |  | 
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| 187 |  | 
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| 188 |  | 
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| 189 | /*! | 
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| 190 | Constructs a group box widget with the given \a parent but with no title. | 
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| 191 | */ | 
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| 192 |  | 
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| 193 | QGroupBox::QGroupBox(QWidget *parent) | 
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| 194 | : QWidget(*new QGroupBoxPrivate, parent, 0) | 
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| 195 | { | 
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| 196 | Q_D(QGroupBox); | 
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| 197 | d->init(); | 
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| 198 | } | 
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| 199 |  | 
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| 200 | /*! | 
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| 201 | Constructs a group box with the given \a title and \a parent. | 
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| 202 | */ | 
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| 203 |  | 
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| 204 | QGroupBox::QGroupBox(const QString &title, QWidget *parent) | 
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| 205 | : QWidget(*new QGroupBoxPrivate, parent, 0) | 
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| 206 | { | 
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| 207 | Q_D(QGroupBox); | 
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| 208 | d->init(); | 
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| 209 | setTitle(title); | 
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| 210 | } | 
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| 211 |  | 
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| 212 |  | 
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| 213 | /*! | 
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| 214 | Destroys the group box. | 
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| 215 | */ | 
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| 216 | QGroupBox::~QGroupBox() | 
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| 217 | { | 
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| 218 | } | 
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| 219 |  | 
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| 220 | void QGroupBoxPrivate::init() | 
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| 221 | { | 
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| 222 | Q_Q(QGroupBox); | 
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| 223 | align = Qt::AlignLeft; | 
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| 224 | #ifndef QT_NO_SHORTCUT | 
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| 225 | shortcutId = 0; | 
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| 226 | #endif | 
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| 227 | flat = false; | 
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| 228 | checkable = false; | 
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| 229 | checked = true; | 
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| 230 | hover = false; | 
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| 231 | overCheckBox = false; | 
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| 232 | pressedControl = QStyle::SC_None; | 
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| 233 | calculateFrame(); | 
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| 234 | q->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred, | 
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| 235 | QSizePolicy::GroupBox)); | 
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| 236 | } | 
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| 237 |  | 
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| 238 | void QGroupBox::setTitle(const QString &title) | 
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| 239 | { | 
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| 240 | Q_D(QGroupBox); | 
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| 241 | if (d->title == title)                                // no change | 
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| 242 | return; | 
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| 243 | d->title = title; | 
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| 244 | #ifndef QT_NO_SHORTCUT | 
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| 245 | releaseShortcut(d->shortcutId); | 
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| 246 | d->shortcutId = grabShortcut(QKeySequence::mnemonic(title)); | 
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| 247 | #endif | 
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| 248 | d->calculateFrame(); | 
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| 249 |  | 
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| 250 | update(); | 
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| 251 | updateGeometry(); | 
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| 252 | #ifndef QT_NO_ACCESSIBILITY | 
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| 253 | QAccessible::updateAccessibility(this, 0, QAccessible::NameChanged); | 
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| 254 | #endif | 
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| 255 | } | 
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| 256 |  | 
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| 257 | /*! | 
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| 258 | \property QGroupBox::title | 
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| 259 | \brief the group box title text | 
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| 260 |  | 
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| 261 | The group box title text will have a keyboard shortcut if the title | 
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| 262 | contains an ampersand ('&') followed by a letter. | 
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| 263 |  | 
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| 264 | \snippet doc/src/snippets/code/src_gui_widgets_qgroupbox.cpp 0 | 
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| 265 |  | 
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| 266 | In the example above, \key Alt+U moves the keyboard focus to the | 
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| 267 | group box. See the \l {QShortcut#mnemonic}{QShortcut} | 
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| 268 | documentation for details (to display an actual ampersand, use | 
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| 269 | '&&'). | 
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| 270 |  | 
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| 271 | There is no default title text. | 
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| 272 |  | 
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| 273 | \sa alignment | 
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| 274 | */ | 
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| 275 |  | 
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| 276 | QString QGroupBox::title() const | 
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| 277 | { | 
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| 278 | Q_D(const QGroupBox); | 
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| 279 | return d->title; | 
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| 280 | } | 
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| 281 |  | 
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| 282 | /*! | 
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| 283 | \property QGroupBox::alignment | 
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| 284 | \brief the alignment of the group box title. | 
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| 285 |  | 
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| 286 | Most styles place the title at the top of the frame. The horizontal | 
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| 287 | alignment of the title can be specified using single values from | 
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| 288 | the following list: | 
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| 289 |  | 
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| 290 | \list | 
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| 291 | \i Qt::AlignLeft aligns the title text with the left-hand side of the group box. | 
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| 292 | \i Qt::AlignRight aligns the title text with the right-hand side of the group box. | 
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| 293 | \i Qt::AlignHCenter aligns the title text with the horizontal center of the group box. | 
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| 294 | \endlist | 
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| 295 |  | 
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| 296 | The default alignment is Qt::AlignLeft. | 
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| 297 |  | 
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| 298 | \sa Qt::Alignment | 
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| 299 | */ | 
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| 300 | Qt::Alignment QGroupBox::alignment() const | 
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| 301 | { | 
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| 302 | Q_D(const QGroupBox); | 
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| 303 | return QFlag(d->align); | 
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| 304 | } | 
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| 305 |  | 
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| 306 | void QGroupBox::setAlignment(int alignment) | 
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| 307 | { | 
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| 308 | Q_D(QGroupBox); | 
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| 309 | d->align = alignment; | 
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| 310 | updateGeometry(); | 
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| 311 | update(); | 
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| 312 | } | 
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| 313 |  | 
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| 314 | /*! \reimp | 
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| 315 | */ | 
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| 316 | void QGroupBox::resizeEvent(QResizeEvent *e) | 
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| 317 | { | 
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| 318 | QWidget::resizeEvent(e); | 
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| 319 | } | 
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| 320 |  | 
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| 321 | /*! \reimp | 
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| 322 | */ | 
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| 323 |  | 
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| 324 | void QGroupBox::paintEvent(QPaintEvent *) | 
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| 325 | { | 
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| 326 | QStylePainter paint(this); | 
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| 327 | QStyleOptionGroupBox option; | 
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| 328 | initStyleOption(&option); | 
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| 329 | paint.drawComplexControl(QStyle::CC_GroupBox, option); | 
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| 330 | } | 
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| 331 |  | 
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| 332 | /*! \reimp  */ | 
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| 333 | bool QGroupBox::event(QEvent *e) | 
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| 334 | { | 
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| 335 | Q_D(QGroupBox); | 
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| 336 | #ifndef QT_NO_SHORTCUT | 
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| 337 | if (e->type() == QEvent::Shortcut) { | 
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| 338 | QShortcutEvent *se = static_cast<QShortcutEvent *>(e); | 
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| 339 | if (se->shortcutId() == d->shortcutId) { | 
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| 340 | if (!isCheckable()) { | 
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| 341 | d->_q_fixFocus(Qt::ShortcutFocusReason); | 
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| 342 | } else { | 
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| 343 | d->click(); | 
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| 344 | setFocus(Qt::ShortcutFocusReason); | 
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| 345 | } | 
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| 346 | return true; | 
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| 347 | } | 
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| 348 | } | 
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| 349 | #endif | 
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| 350 | QStyleOptionGroupBox box; | 
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| 351 | initStyleOption(&box); | 
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| 352 | switch (e->type()) { | 
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| 353 | case QEvent::HoverEnter: | 
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| 354 | case QEvent::HoverMove: { | 
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| 355 | QStyle::SubControl control = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box, | 
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| 356 | static_cast<QHoverEvent *>(e)->pos(), | 
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| 357 | this); | 
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| 358 | bool oldHover = d->hover; | 
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| 359 | d->hover = d->checkable && (control == QStyle::SC_GroupBoxLabel || control == QStyle::SC_GroupBoxCheckBox); | 
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| 360 | if (oldHover != d->hover) { | 
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| 361 | QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this) | 
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| 362 | | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this); | 
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| 363 | update(rect); | 
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| 364 | } | 
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| 365 | return true; | 
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| 366 | } | 
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| 367 | case QEvent::HoverLeave: | 
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| 368 | d->hover = false; | 
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| 369 | if (d->checkable) { | 
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| 370 | QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this) | 
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| 371 | | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this); | 
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| 372 | update(rect); | 
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| 373 | } | 
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| 374 | return true; | 
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| 375 | case QEvent::KeyPress: { | 
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| 376 | QKeyEvent *k = static_cast<QKeyEvent*>(e); | 
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| 377 | if (!k->isAutoRepeat() && (k->key() == Qt::Key_Select || k->key() == Qt::Key_Space)) { | 
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| 378 | d->pressedControl = QStyle::SC_GroupBoxCheckBox; | 
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| 379 | update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)); | 
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| 380 | return true; | 
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| 381 | } | 
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| 382 | break; | 
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| 383 | } | 
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| 384 | case QEvent::KeyRelease: { | 
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| 385 | QKeyEvent *k = static_cast<QKeyEvent*>(e); | 
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| 386 | if (!k->isAutoRepeat() && (k->key() == Qt::Key_Select || k->key() == Qt::Key_Space)) { | 
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| 387 | bool toggle = (d->pressedControl == QStyle::SC_GroupBoxLabel | 
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| 388 | || d->pressedControl == QStyle::SC_GroupBoxCheckBox); | 
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| 389 | d->pressedControl = QStyle::SC_None; | 
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| 390 | if (toggle) | 
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| 391 | d->click(); | 
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| 392 | return true; | 
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| 393 | } | 
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| 394 | break; | 
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| 395 | } | 
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| 396 | default: | 
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| 397 | break; | 
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| 398 | } | 
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| 399 | return QWidget::event(e); | 
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| 400 | } | 
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| 401 |  | 
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| 402 | /*!\reimp */ | 
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| 403 | void QGroupBox::childEvent(QChildEvent *c) | 
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| 404 | { | 
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| 405 | Q_D(QGroupBox); | 
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| 406 | if (c->type() != QEvent::ChildAdded || !c->child()->isWidgetType()) | 
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| 407 | return; | 
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| 408 | QWidget *w = (QWidget*)c->child(); | 
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| 409 | if (d->checkable) { | 
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| 410 | if (d->checked) { | 
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| 411 | if (!w->testAttribute(Qt::WA_ForceDisabled)) | 
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| 412 | w->setEnabled(true); | 
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| 413 | } else { | 
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| 414 | if (w->isEnabled()) { | 
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| 415 | w->setEnabled(false); | 
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| 416 | w->setAttribute(Qt::WA_ForceDisabled, false); | 
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| 417 | } | 
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| 418 | } | 
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| 419 | } | 
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| 420 | } | 
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| 421 |  | 
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| 422 |  | 
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| 423 | /*! | 
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| 424 | \internal | 
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| 425 |  | 
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| 426 | This private slot finds a widget in this group box that can accept | 
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| 427 | focus, and gives the focus to that widget. | 
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| 428 | */ | 
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| 429 |  | 
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| 430 | void QGroupBoxPrivate::_q_fixFocus(Qt::FocusReason reason) | 
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| 431 | { | 
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| 432 | Q_Q(QGroupBox); | 
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| 433 | QWidget *fw = q->focusWidget(); | 
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| 434 | if (!fw) { | 
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| 435 | QWidget * best = 0; | 
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| 436 | QWidget * candidate = 0; | 
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| 437 | QWidget * w = q; | 
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| 438 | while ((w = w->nextInFocusChain()) != q) { | 
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| 439 | if (q->isAncestorOf(w) && (w->focusPolicy() & Qt::TabFocus) == Qt::TabFocus && w->isVisibleTo(q)) { | 
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| 440 | if (!best && qobject_cast<QRadioButton*>(w) && ((QRadioButton*)w)->isChecked()) | 
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| 441 | // we prefer a checked radio button or a widget that | 
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| 442 | // already has focus, if there is one | 
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| 443 | best = w; | 
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| 444 | else | 
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| 445 | if (!candidate) | 
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| 446 | // but we'll accept anything that takes focus | 
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| 447 | candidate = w; | 
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| 448 | } | 
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| 449 | } | 
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| 450 | if (best) | 
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| 451 | fw = best; | 
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| 452 | else | 
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| 453 | if (candidate) | 
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| 454 | fw = candidate; | 
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| 455 | } | 
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| 456 | if (fw) | 
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| 457 | fw->setFocus(reason); | 
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| 458 | } | 
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| 459 |  | 
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| 460 | /* | 
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| 461 | Sets the right frame rect depending on the title. | 
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| 462 | */ | 
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| 463 | void QGroupBoxPrivate::calculateFrame() | 
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| 464 | { | 
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| 465 | Q_Q(QGroupBox); | 
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| 466 | QStyleOptionGroupBox box; | 
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| 467 | q->initStyleOption(&box); | 
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| 468 | QRect contentsRect = q->style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxContents, q); | 
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| 469 | q->setContentsMargins(contentsRect.left() - box.rect.left(), contentsRect.top() - box.rect.top(), | 
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| 470 | box.rect.right() - contentsRect.right(), box.rect.bottom() - contentsRect.bottom()); | 
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| 471 | setLayoutItemMargins(QStyle::SE_GroupBoxLayoutItem, &box); | 
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| 472 | } | 
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| 473 |  | 
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| 474 | /*! \reimp | 
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| 475 | */ | 
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| 476 | void QGroupBox::focusInEvent(QFocusEvent *fe) | 
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| 477 | { // note no call to super | 
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| 478 | Q_D(QGroupBox); | 
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| 479 | if (focusPolicy() == Qt::NoFocus) { | 
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| 480 | d->_q_fixFocus(fe->reason()); | 
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| 481 | } else { | 
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| 482 | QStyleOptionGroupBox box; | 
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| 483 | initStyleOption(&box); | 
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| 484 | QRect rect = style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this) | 
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| 485 | | style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxLabel, this); | 
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| 486 | update(rect); | 
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| 487 | } | 
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| 488 | } | 
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| 489 |  | 
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| 490 |  | 
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| 491 | /*! | 
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| 492 | \reimp | 
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| 493 | */ | 
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| 494 | QSize QGroupBox::minimumSizeHint() const | 
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| 495 | { | 
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| 496 | Q_D(const QGroupBox); | 
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| 497 | QStyleOptionGroupBox option; | 
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| 498 | initStyleOption(&option); | 
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| 499 |  | 
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| 500 | QFontMetrics metrics(fontMetrics()); | 
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| 501 |  | 
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| 502 | int baseWidth = metrics.width(d->title) + metrics.width(QLatin1Char(' ')); | 
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| 503 | int baseHeight = metrics.height(); | 
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| 504 | if (d->checkable) { | 
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| 505 | baseWidth += style()->pixelMetric(QStyle::PM_IndicatorWidth); | 
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| 506 | baseWidth += style()->pixelMetric(QStyle::PM_CheckBoxLabelSpacing); | 
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| 507 | baseHeight = qMax(baseHeight, style()->pixelMetric(QStyle::PM_IndicatorHeight)); | 
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| 508 | } | 
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| 509 |  | 
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| 510 | QSize size = style()->sizeFromContents(QStyle::CT_GroupBox, &option, QSize(baseWidth, baseHeight), this); | 
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| 511 | return size.expandedTo(QWidget::minimumSizeHint()); | 
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| 512 | } | 
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| 513 |  | 
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| 514 | /*! | 
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| 515 | \property QGroupBox::flat | 
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| 516 | \brief whether the group box is painted flat or has a frame | 
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| 517 |  | 
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| 518 | A group box usually consists of a surrounding frame with a title | 
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| 519 | at the top. If this property is enabled, only the top part of the frame is | 
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| 520 | drawn in most styles; otherwise the whole frame is drawn. | 
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| 521 |  | 
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| 522 | By default, this property is disabled; i.e. group boxes are not flat unless | 
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| 523 | explicitly specified. | 
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| 524 |  | 
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| 525 | \bold{Note:} In some styles, flat and non-flat group boxes have similar | 
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| 526 | representations and may not be as distinguishable as they are in other | 
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| 527 | styles. | 
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| 528 |  | 
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| 529 | \sa title | 
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| 530 | */ | 
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| 531 | bool QGroupBox::isFlat() const | 
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| 532 | { | 
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| 533 | Q_D(const QGroupBox); | 
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| 534 | return d->flat; | 
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| 535 | } | 
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| 536 |  | 
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| 537 | void QGroupBox::setFlat(bool b) | 
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| 538 | { | 
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| 539 | Q_D(QGroupBox); | 
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| 540 | if (d->flat == b) | 
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| 541 | return; | 
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| 542 | d->flat = b; | 
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| 543 | updateGeometry(); | 
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| 544 | update(); | 
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| 545 | } | 
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| 546 |  | 
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| 547 |  | 
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| 548 | /*! | 
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| 549 | \property QGroupBox::checkable | 
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| 550 | \brief whether the group box has a checkbox in its title | 
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| 551 |  | 
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| 552 | If this property is true, the group box displays its title using | 
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| 553 | a checkbox in place of an ordinary label. If the checkbox is checked, | 
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| 554 | the group box's children are enabled; otherwise they are disabled and | 
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| 555 | inaccessible. | 
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| 556 |  | 
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| 557 | By default, group boxes are not checkable. | 
|---|
| 558 |  | 
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| 559 | If this property is enabled for a group box, it will also be initially | 
|---|
| 560 | checked to ensure that its contents are enabled. | 
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| 561 |  | 
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| 562 | \sa checked | 
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| 563 | */ | 
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| 564 | void QGroupBox::setCheckable(bool checkable) | 
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| 565 | { | 
|---|
| 566 | Q_D(QGroupBox); | 
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| 567 |  | 
|---|
| 568 | bool wasCheckable = d->checkable; | 
|---|
| 569 | d->checkable = checkable; | 
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| 570 |  | 
|---|
| 571 | if (checkable) { | 
|---|
| 572 | setChecked(true); | 
|---|
| 573 | if (!wasCheckable) { | 
|---|
| 574 | setFocusPolicy(Qt::StrongFocus); | 
|---|
| 575 | d->_q_setChildrenEnabled(true); | 
|---|
| 576 | updateGeometry(); | 
|---|
| 577 | } | 
|---|
| 578 | } else { | 
|---|
| 579 | if (wasCheckable) { | 
|---|
| 580 | setFocusPolicy(Qt::NoFocus); | 
|---|
| 581 | d->_q_setChildrenEnabled(true); | 
|---|
| 582 | updateGeometry(); | 
|---|
| 583 | } | 
|---|
| 584 | d->_q_setChildrenEnabled(true); | 
|---|
| 585 | } | 
|---|
| 586 |  | 
|---|
| 587 | if (wasCheckable != checkable) { | 
|---|
| 588 | d->calculateFrame(); | 
|---|
| 589 | update(); | 
|---|
| 590 | } | 
|---|
| 591 | } | 
|---|
| 592 |  | 
|---|
| 593 | bool QGroupBox::isCheckable() const | 
|---|
| 594 | { | 
|---|
| 595 | Q_D(const QGroupBox); | 
|---|
| 596 | return d->checkable; | 
|---|
| 597 | } | 
|---|
| 598 |  | 
|---|
| 599 |  | 
|---|
| 600 | bool QGroupBox::isChecked() const | 
|---|
| 601 | { | 
|---|
| 602 | Q_D(const QGroupBox); | 
|---|
| 603 | return d->checkable && d->checked; | 
|---|
| 604 | } | 
|---|
| 605 |  | 
|---|
| 606 |  | 
|---|
| 607 | /*! | 
|---|
| 608 | \fn void QGroupBox::toggled(bool on) | 
|---|
| 609 |  | 
|---|
| 610 | If the group box is checkable, this signal is emitted when the check box | 
|---|
| 611 | is toggled. \a on is true if the check box is checked; otherwise it is false. | 
|---|
| 612 |  | 
|---|
| 613 | \sa checkable | 
|---|
| 614 | */ | 
|---|
| 615 |  | 
|---|
| 616 |  | 
|---|
| 617 | /*! | 
|---|
| 618 | \fn void QGroupBox::clicked(bool checked) | 
|---|
| 619 | \since 4.2 | 
|---|
| 620 |  | 
|---|
| 621 | This signal is emitted when the check box is activated (i.e. pressed down | 
|---|
| 622 | then released while the mouse cursor is inside the button), or when the | 
|---|
| 623 | shortcut key is typed, Notably, this signal is \e not emitted if you call | 
|---|
| 624 | setChecked(). | 
|---|
| 625 |  | 
|---|
| 626 | If the check box is checked \a checked is true; it is false if the check | 
|---|
| 627 | box is unchecked. | 
|---|
| 628 |  | 
|---|
| 629 | \sa checkable, toggled(), checked | 
|---|
| 630 | */ | 
|---|
| 631 |  | 
|---|
| 632 | /*! | 
|---|
| 633 | \property QGroupBox::checked | 
|---|
| 634 | \brief whether the group box is checked | 
|---|
| 635 |  | 
|---|
| 636 | If the group box is checkable, it is displayed with a check box. | 
|---|
| 637 | If the check box is checked, the group box's children are enabled; | 
|---|
| 638 | otherwise the children are disabled and are inaccessible to the user. | 
|---|
| 639 |  | 
|---|
| 640 | By default, checkable group boxes are also checked. | 
|---|
| 641 |  | 
|---|
| 642 | \sa checkable | 
|---|
| 643 | */ | 
|---|
| 644 | void QGroupBox::setChecked(bool b) | 
|---|
| 645 | { | 
|---|
| 646 | Q_D(QGroupBox); | 
|---|
| 647 | if (d->checkable) { | 
|---|
| 648 | if (d->checked != b) | 
|---|
| 649 | update(); | 
|---|
| 650 | bool wasToggled = (b != d->checked); | 
|---|
| 651 | d->checked = b; | 
|---|
| 652 | if (wasToggled) { | 
|---|
| 653 | d->_q_setChildrenEnabled(b); | 
|---|
| 654 | emit toggled(b); | 
|---|
| 655 | } | 
|---|
| 656 | } | 
|---|
| 657 | } | 
|---|
| 658 |  | 
|---|
| 659 | /* | 
|---|
| 660 | sets all children of the group box except the qt_groupbox_checkbox | 
|---|
| 661 | to either disabled/enabled | 
|---|
| 662 | */ | 
|---|
| 663 | void QGroupBoxPrivate::_q_setChildrenEnabled(bool b) | 
|---|
| 664 | { | 
|---|
| 665 | Q_Q(QGroupBox); | 
|---|
| 666 | QObjectList childList = q->children(); | 
|---|
| 667 | for (int i = 0; i < childList.size(); ++i) { | 
|---|
| 668 | QObject *o = childList.at(i); | 
|---|
| 669 | if (o->isWidgetType()) { | 
|---|
| 670 | QWidget *w = static_cast<QWidget *>(o); | 
|---|
| 671 | if (b) { | 
|---|
| 672 | if (!w->testAttribute(Qt::WA_ForceDisabled)) | 
|---|
| 673 | w->setEnabled(true); | 
|---|
| 674 | } else { | 
|---|
| 675 | if (w->isEnabled()) { | 
|---|
| 676 | w->setEnabled(false); | 
|---|
| 677 | w->setAttribute(Qt::WA_ForceDisabled, false); | 
|---|
| 678 | } | 
|---|
| 679 | } | 
|---|
| 680 | } | 
|---|
| 681 | } | 
|---|
| 682 | } | 
|---|
| 683 |  | 
|---|
| 684 | /*! \reimp */ | 
|---|
| 685 | void QGroupBox::changeEvent(QEvent *ev) | 
|---|
| 686 | { | 
|---|
| 687 | Q_D(QGroupBox); | 
|---|
| 688 | if (ev->type() == QEvent::EnabledChange) { | 
|---|
| 689 | if (d->checkable && isEnabled()) { | 
|---|
| 690 | // we are being enabled - disable children | 
|---|
| 691 | if (!d->checked) | 
|---|
| 692 | d->_q_setChildrenEnabled(false); | 
|---|
| 693 | } | 
|---|
| 694 | } else if (ev->type() == QEvent::FontChange | 
|---|
| 695 | #ifdef Q_WS_MAC | 
|---|
| 696 | || ev->type() == QEvent::MacSizeChange | 
|---|
| 697 | #endif | 
|---|
| 698 | || ev->type() == QEvent::StyleChange) { | 
|---|
| 699 | d->calculateFrame(); | 
|---|
| 700 | } | 
|---|
| 701 | QWidget::changeEvent(ev); | 
|---|
| 702 | } | 
|---|
| 703 |  | 
|---|
| 704 | /*! \reimp */ | 
|---|
| 705 | void QGroupBox::mousePressEvent(QMouseEvent *event) | 
|---|
| 706 | { | 
|---|
| 707 | if (event->button() != Qt::LeftButton) { | 
|---|
| 708 | event->ignore(); | 
|---|
| 709 | return; | 
|---|
| 710 | } | 
|---|
| 711 |  | 
|---|
| 712 | Q_D(QGroupBox); | 
|---|
| 713 | QStyleOptionGroupBox box; | 
|---|
| 714 | initStyleOption(&box); | 
|---|
| 715 | d->pressedControl = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box, | 
|---|
| 716 | event->pos(), this); | 
|---|
| 717 | if (d->checkable && (d->pressedControl & (QStyle::SC_GroupBoxCheckBox | QStyle::SC_GroupBoxLabel))) { | 
|---|
| 718 | d->overCheckBox = true; | 
|---|
| 719 | update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)); | 
|---|
| 720 | } | 
|---|
| 721 | } | 
|---|
| 722 |  | 
|---|
| 723 | /*! \reimp */ | 
|---|
| 724 | void QGroupBox::mouseMoveEvent(QMouseEvent *event) | 
|---|
| 725 | { | 
|---|
| 726 | Q_D(QGroupBox); | 
|---|
| 727 | QStyleOptionGroupBox box; | 
|---|
| 728 | initStyleOption(&box); | 
|---|
| 729 | QStyle::SubControl pressed = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box, | 
|---|
| 730 | event->pos(), this); | 
|---|
| 731 | bool oldOverCheckBox = d->overCheckBox; | 
|---|
| 732 | d->overCheckBox = (pressed == QStyle::SC_GroupBoxCheckBox || pressed == QStyle::SC_GroupBoxLabel); | 
|---|
| 733 | if (d->checkable && (d->pressedControl == QStyle::SC_GroupBoxCheckBox || d->pressedControl == QStyle::SC_GroupBoxLabel) | 
|---|
| 734 | && (d->overCheckBox != oldOverCheckBox)) | 
|---|
| 735 | update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)); | 
|---|
| 736 | } | 
|---|
| 737 |  | 
|---|
| 738 | /*! \reimp */ | 
|---|
| 739 | void QGroupBox::mouseReleaseEvent(QMouseEvent *event) | 
|---|
| 740 | { | 
|---|
| 741 | if (event->button() != Qt::LeftButton) { | 
|---|
| 742 | event->ignore(); | 
|---|
| 743 | return; | 
|---|
| 744 | } | 
|---|
| 745 |  | 
|---|
| 746 | Q_D(QGroupBox); | 
|---|
| 747 | QStyleOptionGroupBox box; | 
|---|
| 748 | initStyleOption(&box); | 
|---|
| 749 | QStyle::SubControl released = style()->hitTestComplexControl(QStyle::CC_GroupBox, &box, | 
|---|
| 750 | event->pos(), this); | 
|---|
| 751 | bool toggle = d->checkable && (released == QStyle::SC_GroupBoxLabel | 
|---|
| 752 | || released == QStyle::SC_GroupBoxCheckBox); | 
|---|
| 753 | d->pressedControl = QStyle::SC_None; | 
|---|
| 754 | d->overCheckBox = false; | 
|---|
| 755 | if (toggle) | 
|---|
| 756 | d->click(); | 
|---|
| 757 | else if (d->checkable) | 
|---|
| 758 | update(style()->subControlRect(QStyle::CC_GroupBox, &box, QStyle::SC_GroupBoxCheckBox, this)); | 
|---|
| 759 | } | 
|---|
| 760 |  | 
|---|
| 761 | #ifdef QT3_SUPPORT | 
|---|
| 762 | /*! | 
|---|
| 763 | Use one of the constructors that doesn't take the \a name | 
|---|
| 764 | argument and then use setObjectName() instead. | 
|---|
| 765 | */ | 
|---|
| 766 | QGroupBox::QGroupBox(QWidget *parent, const char *name) | 
|---|
| 767 | : QWidget(*new QGroupBoxPrivate, parent, 0) | 
|---|
| 768 | { | 
|---|
| 769 | Q_D(QGroupBox); | 
|---|
| 770 | setObjectName(QString::fromAscii(name)); | 
|---|
| 771 | d->init(); | 
|---|
| 772 | } | 
|---|
| 773 |  | 
|---|
| 774 | /*! | 
|---|
| 775 | Use one of the constructors that doesn't take the \a name | 
|---|
| 776 | argument and then use setObjectName() instead. | 
|---|
| 777 | */ | 
|---|
| 778 | QGroupBox::QGroupBox(const QString &title, QWidget *parent, const char *name) | 
|---|
| 779 | : QWidget(*new QGroupBoxPrivate, parent, 0) | 
|---|
| 780 | { | 
|---|
| 781 | Q_D(QGroupBox); | 
|---|
| 782 | setObjectName(QString::fromAscii(name)); | 
|---|
| 783 | d->init(); | 
|---|
| 784 | setTitle(title); | 
|---|
| 785 | } | 
|---|
| 786 | #endif // QT3_SUPPORT | 
|---|
| 787 |  | 
|---|
| 788 | QT_END_NAMESPACE | 
|---|
| 789 |  | 
|---|
| 790 | #include "moc_qgroupbox.cpp" | 
|---|
| 791 |  | 
|---|
| 792 | #endif //QT_NO_GROUPBOX | 
|---|