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
|
/****************************************************************************
**
** Copyright (C) 2012 Thorbjørn Lund 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 <QtWidgets/QtWidgets>
class TreeDialog : public QDialog
{
Q_OBJECT
public:
TreeDialog() { create(); }
protected:
void create()
{
resize(1000, 233);
gridLayout = new QGridLayout(this);
treeWidget = new QTreeWidget(this);
gridLayout->addWidget(treeWidget, 0, 0, 2, 1);
spinPrecision = new QSpinBox(this);
gridLayout->addWidget(spinPrecision, 0, 1, 1, 1);
verticalSpacer = new QSpacerItem(20, 20, QSizePolicy::Minimum, QSizePolicy::Expanding);
gridLayout->addItem(verticalSpacer, 1, 1, 1, 1);
QStringList itemInfo("Col1");
itemInfo.append("Col2");
itemInfo.append("Col3");
itemInfo.append("Dummy");
// Developer no. could also have been social security number og some other id.
treeWidget->setHeaderLabels(itemInfo);
QStringList sl1("This is Root Item");
sl1.append("i");
QTreeWidgetItem *rootitem = new QTreeWidgetItem(treeWidget, sl1);
QStringList sl2("This is Child1 Item");
sl2.append("WW");
QTreeWidgetItem *child1 = new QTreeWidgetItem(rootitem, sl2);
QString ii = QString::fromLatin1("ii");
QStringList is;
const int rowCount = 3000;
spinPrecision->setMinimum(-1);
spinPrecision->setMaximum(rowCount + 5);
for (int u = 0; u < rowCount; ++u) {
if (u % 25 == 0)
ii += QString::fromLatin1("i");
else
ii[ii.length() - 1] = QChar::fromLatin1('a' + (u % 25));
ii[ii.length() - 2] = QChar::fromLatin1('i');
is.append(ii);
}
for (int u = 0; u < rowCount - 2; ++u) { // -2 since we have rootitem and child1
QString col1;
col1 = QString::fromLatin1("This is child item %1").arg(u + 2);
QStringList sl(col1);
sl.append(is[u]);
sl.append(is[rowCount - u - 1]);
if (u > 500)
new QTreeWidgetItem(rootitem, sl);
else
new QTreeWidgetItem(child1, sl);
}
treeWidget->header()->setSectionResizeMode(0, QHeaderView::ResizeToContents);
treeWidget->header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
treeWidget->header()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
spinPrecision->setValue(treeWidget->header()->resizeContentsPrecision());
connect(spinPrecision, SIGNAL(valueChanged(int)), this, SLOT(slotValueChanged(int)));
} // setupUi
protected slots:
void slotValueChanged(int newval);
protected:
QGridLayout *gridLayout;
QTreeWidget *treeWidget;
QSpinBox *spinPrecision;
QSpacerItem *verticalSpacer;
};
void TreeDialog::slotValueChanged(int newval)
{
treeWidget->header()->setResizeContentsPrecision(newval);
for (int u = 0; u < treeWidget->header()->count(); ++u)
treeWidget->resizeColumnToContents(u);
}
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
TreeDialog d1;
d1.show();
app.exec();
}
#include "testtree.moc"
|
