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 Assistant module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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
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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** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 as published by the Free Software
20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
23** be met: https://www.gnu.org/licenses/gpl-3.0.html.
24**
25** $QT_END_LICENSE$
26**
27****************************************************************************/
28
29#include "openpagesswitcher.h"
30
31#include "centralwidget.h"
32#include "openpagesmodel.h"
33#include "openpageswidget.h"
34#include "tracer.h"
35
36#include <QtCore/QEvent>
37
38#include <QtGui/QKeyEvent>
39#include <QtWidgets/QVBoxLayout>
40
41QT_BEGIN_NAMESPACE
42
43const int gWidth = 300;
44const int gHeight = 200;
45
46OpenPagesSwitcher::OpenPagesSwitcher(OpenPagesModel *model)
47 : QFrame(nullptr, Qt::Popup)
48 , m_openPagesModel(model)
49{
50 TRACE_OBJ
51 resize(w: gWidth, h: gHeight);
52
53 m_openPagesWidget = new OpenPagesWidget(m_openPagesModel);
54
55 // We disable the frame on this list view and use a QFrame around it instead.
56 // This improves the look with QGTKStyle.
57#ifndef Q_OS_MAC
58 setFrameStyle(m_openPagesWidget->frameStyle());
59#endif
60 m_openPagesWidget->setFrameStyle(QFrame::NoFrame);
61
62 m_openPagesWidget->allowContextMenu(ok: false);
63 m_openPagesWidget->installEventFilter(filterObj: this);
64
65 QVBoxLayout *layout = new QVBoxLayout(this);
66 layout->setContentsMargins(QMargins());
67 layout->addWidget(m_openPagesWidget);
68
69 connect(sender: m_openPagesWidget, signal: &OpenPagesWidget::closePage,
70 receiver: this, slot: &OpenPagesSwitcher::closePage);
71 connect(sender: m_openPagesWidget, signal: &OpenPagesWidget::setCurrentPage,
72 receiver: this, slot: &OpenPagesSwitcher::setCurrentPage);
73}
74
75OpenPagesSwitcher::~OpenPagesSwitcher()
76{
77 TRACE_OBJ
78}
79
80void OpenPagesSwitcher::gotoNextPage()
81{
82 TRACE_OBJ
83 selectPageUpDown(summand: 1);
84}
85
86void OpenPagesSwitcher::gotoPreviousPage()
87{
88 TRACE_OBJ
89 selectPageUpDown(summand: -1);
90}
91
92void OpenPagesSwitcher::selectAndHide()
93{
94 TRACE_OBJ
95 setVisible(false);
96 emit setCurrentPage(m_openPagesWidget->currentIndex());
97}
98
99void OpenPagesSwitcher::selectCurrentPage()
100{
101 TRACE_OBJ
102 m_openPagesWidget->selectCurrentPage();
103}
104
105void OpenPagesSwitcher::setVisible(bool visible)
106{
107 TRACE_OBJ
108 QWidget::setVisible(visible);
109 if (visible)
110 setFocus();
111}
112
113void OpenPagesSwitcher::focusInEvent(QFocusEvent *event)
114{
115 TRACE_OBJ
116 Q_UNUSED(event);
117 m_openPagesWidget->setFocus();
118}
119
120bool OpenPagesSwitcher::eventFilter(QObject *object, QEvent *event)
121{
122 TRACE_OBJ
123 if (object == m_openPagesWidget) {
124 if (event->type() == QEvent::KeyPress) {
125 QKeyEvent *ke = static_cast<QKeyEvent*>(event);
126 if (ke->key() == Qt::Key_Escape) {
127 setVisible(false);
128 return true;
129 }
130
131 const int key = ke->key();
132 if (key == Qt::Key_Return || key == Qt::Key_Enter || key == Qt::Key_Space) {
133 emit setCurrentPage(m_openPagesWidget->currentIndex());
134 return true;
135 }
136
137 Qt::KeyboardModifier modifier = Qt::ControlModifier;
138#ifdef Q_OS_MAC
139 modifier = Qt::AltModifier;
140#endif
141 if (key == Qt::Key_Backtab
142 && (ke->modifiers() == (modifier | Qt::ShiftModifier)))
143 gotoPreviousPage();
144 else if (key == Qt::Key_Tab && (ke->modifiers() == modifier))
145 gotoNextPage();
146 } else if (event->type() == QEvent::KeyRelease) {
147 QKeyEvent *ke = static_cast<QKeyEvent*>(event);
148 if (ke->modifiers() == 0
149 /*HACK this is to overcome some event inconsistencies between platforms*/
150 || (ke->modifiers() == Qt::AltModifier
151 && (ke->key() == Qt::Key_Alt || ke->key() == -1))) {
152 selectAndHide();
153 }
154 }
155 }
156 return QWidget::eventFilter(watched: object, event);
157}
158
159void OpenPagesSwitcher::selectPageUpDown(int summand)
160{
161 TRACE_OBJ
162 const int pageCount = m_openPagesModel->rowCount();
163 if (pageCount < 2)
164 return;
165
166 const QModelIndexList &list = m_openPagesWidget->selectionModel()->selectedIndexes();
167 if (list.isEmpty())
168 return;
169
170 QModelIndex index = list.first();
171 if (!index.isValid())
172 return;
173
174 index = m_openPagesModel->index(row: (index.row() + summand + pageCount) % pageCount, column: 0);
175 if (index.isValid()) {
176 m_openPagesWidget->setCurrentIndex(index);
177 m_openPagesWidget->scrollTo(index, hint: QAbstractItemView::PositionAtCenter);
178 }
179}
180
181QT_END_NAMESPACE
182

source code of qttools/src/assistant/assistant/openpagesswitcher.cpp