bb73c085a6
Change-Id: Iffab60f0911a55e4be09faeb29df0bae1ea2eb19 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Thorbjørn Lund Martsum - tmartsum[at]gmail.com
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets/QtWidgets>
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class SomeHandler : public QObject
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{
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Q_OBJECT
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QHeaderView *m_hv;
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QTableView *m_tv;
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public:
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SomeHandler(QHeaderView *hv, QTableView *tv);
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public slots:
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void slotSectionResized(int, int, int);
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};
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SomeHandler::SomeHandler(QHeaderView *hv, QTableView *tv)
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{
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m_hv = hv;
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m_tv = tv;
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m_tv->setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
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connect(hv, SIGNAL(sectionResized(int,int,int)), this, SLOT(slotSectionResized(int,int,int)));
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}
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void SomeHandler::slotSectionResized(int logsection, int oldsize, int newsize)
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{
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int offset = m_hv->offset();
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m_tv->setUpdatesEnabled(false);
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// Do some manual resizing - lets make every section having the new size.
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m_hv->blockSignals(true);
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for (int u = 0; u < m_hv->count(); ++u)
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m_hv->resizeSection(u, newsize);
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m_hv->blockSignals(false);
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// Adjust offset and scrollbar. Maybe it isn't 100% perfect
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// but proof of concept
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// The test has sense without the define, too.
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#define DO_CORRECT_OFFSET_AND_SB
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#ifdef DO_CORRECT_OFFSET_AND_SB
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int leftRemoved = (m_hv->visualIndex(logsection)) * (oldsize - newsize);
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int newoffset = offset - leftRemoved;
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if (newoffset < 0)
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newoffset = 0;
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if (newoffset > 0 && newoffset >= m_hv->count() * newsize - m_tv->viewport()->width())
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m_hv->setOffsetToLastSection();
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else
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m_hv->setOffset(newoffset);
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m_tv->horizontalScrollBar()->blockSignals(true);
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m_tv->horizontalScrollBar()->setRange(0, m_hv->count() * newsize - m_tv->viewport()->width() );
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m_tv->horizontalScrollBar()->setValue(newoffset);
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m_tv->horizontalScrollBar()->blockSignals(false);
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#endif
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m_tv->setUpdatesEnabled(true);
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}
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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QTableView tv;
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QStandardItemModel m;
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m.setRowCount(10);
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m.setColumnCount(36);
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tv.setModel(&m);
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SomeHandler handler(tv.horizontalHeader(), &tv);
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tv.horizontalHeader()->setDefaultSectionSize(200);
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tv.showMaximized();
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tv.horizontalScrollBar()->setValue(tv.horizontalScrollBar()->maximum());
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app.exec();
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}
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#include "qheaderviewtest1.moc"
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