1 | /****************************************************************************
|
---|
2 | **
|
---|
3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
|
---|
4 | ** Contact: Qt Software Information ([email protected])
|
---|
5 | **
|
---|
6 | ** This file is part of the examples of the Qt Toolkit.
|
---|
7 | **
|
---|
8 | ** $QT_BEGIN_LICENSE:LGPL$
|
---|
9 | ** Commercial Usage
|
---|
10 | ** Licensees holding valid Qt Commercial licenses may use this file in
|
---|
11 | ** accordance with the Qt Commercial License Agreement provided with the
|
---|
12 | ** Software or, alternatively, in accordance with the terms contained in
|
---|
13 | ** a written agreement between you and Nokia.
|
---|
14 | **
|
---|
15 | ** GNU Lesser General Public License Usage
|
---|
16 | ** Alternatively, this file may be used under the terms of the GNU Lesser
|
---|
17 | ** General Public License version 2.1 as published by the Free Software
|
---|
18 | ** Foundation and appearing in the file LICENSE.LGPL included in the
|
---|
19 | ** packaging of this file. Please review the following information to
|
---|
20 | ** ensure the GNU Lesser General Public License version 2.1 requirements
|
---|
21 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
---|
22 | **
|
---|
23 | ** In addition, as a special exception, Nokia gives you certain
|
---|
24 | ** additional rights. These rights are described in the Nokia Qt LGPL
|
---|
25 | ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
|
---|
26 | ** package.
|
---|
27 | **
|
---|
28 | ** GNU General Public License Usage
|
---|
29 | ** Alternatively, this file may be used under the terms of the GNU
|
---|
30 | ** General Public License version 3.0 as published by the Free Software
|
---|
31 | ** Foundation and appearing in the file LICENSE.GPL included in the
|
---|
32 | ** packaging of this file. Please review the following information to
|
---|
33 | ** ensure the GNU General Public License version 3.0 requirements will be
|
---|
34 | ** met: http://www.gnu.org/copyleft/gpl.html.
|
---|
35 | **
|
---|
36 | ** If you are unsure which license is appropriate for your use, please
|
---|
37 | ** contact the sales department at [email protected].
|
---|
38 | ** $QT_END_LICENSE$
|
---|
39 | **
|
---|
40 | ****************************************************************************/
|
---|
41 |
|
---|
42 | #include <QtGui>
|
---|
43 |
|
---|
44 | #include "mainwindow.h"
|
---|
45 | #include "mdichild.h"
|
---|
46 |
|
---|
47 | MainWindow::MainWindow()
|
---|
48 | {
|
---|
49 | mdiArea = new QMdiArea;
|
---|
50 | mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
|
---|
51 | mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
|
---|
52 | setCentralWidget(mdiArea);
|
---|
53 | connect(mdiArea, SIGNAL(subWindowActivated(QMdiSubWindow *)),
|
---|
54 | this, SLOT(updateMenus()));
|
---|
55 | windowMapper = new QSignalMapper(this);
|
---|
56 | connect(windowMapper, SIGNAL(mapped(QWidget *)),
|
---|
57 | this, SLOT(setActiveSubWindow(QWidget *)));
|
---|
58 |
|
---|
59 | createActions();
|
---|
60 | createMenus();
|
---|
61 | createToolBars();
|
---|
62 | createStatusBar();
|
---|
63 | updateMenus();
|
---|
64 |
|
---|
65 | readSettings();
|
---|
66 |
|
---|
67 | setWindowTitle(tr("MDI"));
|
---|
68 | setUnifiedTitleAndToolBarOnMac(true);
|
---|
69 | }
|
---|
70 |
|
---|
71 | void MainWindow::closeEvent(QCloseEvent *event)
|
---|
72 | {
|
---|
73 | mdiArea->closeAllSubWindows();
|
---|
74 | if (activeMdiChild()) {
|
---|
75 | event->ignore();
|
---|
76 | } else {
|
---|
77 | writeSettings();
|
---|
78 | event->accept();
|
---|
79 | }
|
---|
80 | }
|
---|
81 |
|
---|
82 | void MainWindow::newFile()
|
---|
83 | {
|
---|
84 | MdiChild *child = createMdiChild();
|
---|
85 | child->newFile();
|
---|
86 | child->show();
|
---|
87 | }
|
---|
88 |
|
---|
89 | void MainWindow::open()
|
---|
90 | {
|
---|
91 | QString fileName = QFileDialog::getOpenFileName(this);
|
---|
92 | if (!fileName.isEmpty()) {
|
---|
93 | QMdiSubWindow *existing = findMdiChild(fileName);
|
---|
94 | if (existing) {
|
---|
95 | mdiArea->setActiveSubWindow(existing);
|
---|
96 | return;
|
---|
97 | }
|
---|
98 |
|
---|
99 | MdiChild *child = createMdiChild();
|
---|
100 | if (child->loadFile(fileName)) {
|
---|
101 | statusBar()->showMessage(tr("File loaded"), 2000);
|
---|
102 | child->show();
|
---|
103 | } else {
|
---|
104 | child->close();
|
---|
105 | }
|
---|
106 | }
|
---|
107 | }
|
---|
108 |
|
---|
109 | void MainWindow::save()
|
---|
110 | {
|
---|
111 | if (activeMdiChild() && activeMdiChild()->save())
|
---|
112 | statusBar()->showMessage(tr("File saved"), 2000);
|
---|
113 | }
|
---|
114 |
|
---|
115 | void MainWindow::saveAs()
|
---|
116 | {
|
---|
117 | if (activeMdiChild() && activeMdiChild()->saveAs())
|
---|
118 | statusBar()->showMessage(tr("File saved"), 2000);
|
---|
119 | }
|
---|
120 |
|
---|
121 | void MainWindow::cut()
|
---|
122 | {
|
---|
123 | if (activeMdiChild())
|
---|
124 | activeMdiChild()->cut();
|
---|
125 | }
|
---|
126 |
|
---|
127 | void MainWindow::copy()
|
---|
128 | {
|
---|
129 | if (activeMdiChild())
|
---|
130 | activeMdiChild()->copy();
|
---|
131 | }
|
---|
132 |
|
---|
133 | void MainWindow::paste()
|
---|
134 | {
|
---|
135 | if (activeMdiChild())
|
---|
136 | activeMdiChild()->paste();
|
---|
137 | }
|
---|
138 |
|
---|
139 | void MainWindow::about()
|
---|
140 | {
|
---|
141 | QMessageBox::about(this, tr("About MDI"),
|
---|
142 | tr("The <b>MDI</b> example demonstrates how to write multiple "
|
---|
143 | "document interface applications using Qt."));
|
---|
144 | }
|
---|
145 |
|
---|
146 | void MainWindow::updateMenus()
|
---|
147 | {
|
---|
148 | bool hasMdiChild = (activeMdiChild() != 0);
|
---|
149 | saveAct->setEnabled(hasMdiChild);
|
---|
150 | saveAsAct->setEnabled(hasMdiChild);
|
---|
151 | pasteAct->setEnabled(hasMdiChild);
|
---|
152 | closeAct->setEnabled(hasMdiChild);
|
---|
153 | closeAllAct->setEnabled(hasMdiChild);
|
---|
154 | tileAct->setEnabled(hasMdiChild);
|
---|
155 | cascadeAct->setEnabled(hasMdiChild);
|
---|
156 | nextAct->setEnabled(hasMdiChild);
|
---|
157 | previousAct->setEnabled(hasMdiChild);
|
---|
158 | separatorAct->setVisible(hasMdiChild);
|
---|
159 |
|
---|
160 | bool hasSelection = (activeMdiChild() &&
|
---|
161 | activeMdiChild()->textCursor().hasSelection());
|
---|
162 | cutAct->setEnabled(hasSelection);
|
---|
163 | copyAct->setEnabled(hasSelection);
|
---|
164 | }
|
---|
165 |
|
---|
166 | void MainWindow::updateWindowMenu()
|
---|
167 | {
|
---|
168 | windowMenu->clear();
|
---|
169 | windowMenu->addAction(closeAct);
|
---|
170 | windowMenu->addAction(closeAllAct);
|
---|
171 | windowMenu->addSeparator();
|
---|
172 | windowMenu->addAction(tileAct);
|
---|
173 | windowMenu->addAction(cascadeAct);
|
---|
|
---|