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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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.
**
****************************************************************************/
#include "treewidgetcolumnstretcher.h"
#include <QTreeWidget>
#include <QHideEvent>
#include <QHeaderView>
using namespace Utils;
/*!
\class Utils::TreeWidgetColumnStretcher
\brief The class fixes QTreeWidget to resize all columns to contents, except one
stretching column.
As opposed to standard QTreeWidget, all columns are
still interactively resizable.
*/
TreeWidgetColumnStretcher::TreeWidgetColumnStretcher(QTreeWidget *treeWidget, int columnToStretch)
: QObject(treeWidget->header()), m_columnToStretch(columnToStretch)
{
parent()->installEventFilter(this);
QHideEvent fake;
TreeWidgetColumnStretcher::eventFilter(parent(), &fake);
}
bool TreeWidgetColumnStretcher::eventFilter(QObject *obj, QEvent *ev)
{
if (obj == parent()) {
if (ev->type() == QEvent::Show) {
QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
for (int i = 0; i < hv->count(); ++i)
hv->setResizeMode(i, QHeaderView::Interactive);
} else if (ev->type() == QEvent::Hide) {
QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
for (int i = 0; i < hv->count(); ++i)
hv->setResizeMode(i, i == m_columnToStretch ? QHeaderView::Stretch : QHeaderView::ResizeToContents);
} else if (ev->type() == QEvent::Resize) {
QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
if (hv->resizeMode(m_columnToStretch) == QHeaderView::Interactive) {
QResizeEvent *re = static_cast<QResizeEvent*>(ev);
int diff = re->size().width() - re->oldSize().width() ;
hv->resizeSection(m_columnToStretch, qMax(32, hv->sectionSize(1) + diff));
}
}
}
return false;
}
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