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
|
/****************************************************************************
**
** Copyright (C) 2013 Thorbjørn Martsum - tmartsum[at]gmail.com
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QGridLayout>
#include <QFormLayout>
#include <QStackedLayout>
#include <QPushButton>
#include <QLabel>
#include <QApplication>
class ReplaceButton : public QPushButton
{
Q_OBJECT
public:
ReplaceButton(const QString &text = QString("click to replace")) : QPushButton(text)
{
static int v = 0;
++v;
QString txt = QString("click to replace %1").arg(v);
setText(txt);
connect(this, SIGNAL(clicked()), this, SLOT(replace()));
}
protected slots:
void replace()
{
if (!parentWidget())
return;
static int n = 0;
++n;
if (parentWidget()->layout()->replaceWidget(this, new QLabel(QString("replaced(%1)").arg(n))))
deleteLater();
}
};
class StackButtonChange : public QPushButton
{
Q_OBJECT
public:
StackButtonChange(QStackedLayout *l) : QPushButton("stack wdg change")
{
sl = l;
connect(this, SIGNAL(clicked()), this, SLOT(changeWdg()));
}
protected slots:
void changeWdg()
{
int index = sl->indexOf(sl->currentWidget());
++index;
if (index >= sl->count())
index = 0;
sl->setCurrentWidget(sl->itemAt(index)->widget());
sl->parentWidget()->update();
}
protected:
QStackedLayout *sl;
};
int main(int argc, char **argv) {
QApplication app(argc, argv);
QWidget wdg1;
QGridLayout *l1 = new QGridLayout();
l1->addWidget(new ReplaceButton(), 1, 1, 2, 2, Qt::AlignCenter);
l1->addWidget(new ReplaceButton(), 3, 1, 1, 1, Qt::AlignRight);
l1->addWidget(new ReplaceButton(), 1, 3, 1, 1, Qt::AlignLeft);
l1->addWidget(new ReplaceButton(), 2, 3, 1, 1, Qt::AlignLeft);
l1->addWidget(new ReplaceButton(), 3, 2, 1, 1, Qt::AlignRight);
wdg1.setLayout(l1);
wdg1.setWindowTitle("QGridLayout");
wdg1.setGeometry(100, 100, 100, 100);
wdg1.show();
QWidget wdg2;
QFormLayout *l2 = new QFormLayout();
l2->addRow(QString("Label1"), new ReplaceButton());
l2->addRow(QString("Label2"), new ReplaceButton());
l2->addRow(new ReplaceButton(), new ReplaceButton());
wdg2.setLayout(l2);
wdg2.setWindowTitle("QFormLayout");
wdg2.setGeometry(100 + wdg1.sizeHint().width() + 5, 100, 100, 100);
wdg2.show();
QWidget wdg3;
QBoxLayout *l3 = new QVBoxLayout(); // new QHBoxLayout()
QStackedLayout *sl = new QStackedLayout();
sl->addWidget(new ReplaceButton());
sl->addWidget(new ReplaceButton());
sl->addWidget(new ReplaceButton());
l3->addLayout(sl);
l3->addWidget(new StackButtonChange(sl));
l3->addWidget(new ReplaceButton());
l3->addWidget(new ReplaceButton());
wdg3.setLayout(l3);
wdg3.setWindowTitle("QStackedLayout + BoxLayout");
wdg3.setGeometry(100, 100 + wdg1.sizeHint().height() + 30, 100 , 100);
wdg3.show();
app.exec();
}
#include "main.moc"
|
