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/****************************************************************************
**
** Copyright (C) 2012 Thorbjørn Lund Martsum - tmartsum[at]gmail.com
** Contact: http://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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"
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