forked from qt-creator/qt-creator
b4a2a20da7
Change-Id: I4fd3179015ba325d8e739357d393aff6ce23072f Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
79 lines
3.0 KiB
C++
79 lines
3.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Creator.
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**
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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 The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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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 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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****************************************************************************/
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#include "headerviewstretcher.h"
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#include <QHideEvent>
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#include <QHeaderView>
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using namespace Utils;
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/*!
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\class Utils::HeaderViewStretcher
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\brief The HeaderViewStretcher class fixes QHeaderView to resize all
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columns to contents, except one
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stretching column.
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As opposed to standard QTreeWidget, all columns are
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still interactively resizable.
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*/
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HeaderViewStretcher::HeaderViewStretcher(QHeaderView *headerView, int columnToStretch)
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: QObject(headerView), m_columnToStretch(columnToStretch)
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{
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headerView->installEventFilter(this);
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stretch();
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}
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void HeaderViewStretcher::stretch()
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{
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QHideEvent fake;
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HeaderViewStretcher::eventFilter(parent(), &fake);
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}
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bool HeaderViewStretcher::eventFilter(QObject *obj, QEvent *ev)
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{
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if (obj == parent()) {
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if (ev->type() == QEvent::Show) {
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QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
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for (int i = 0; i < hv->count(); ++i)
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hv->setSectionResizeMode(i, QHeaderView::Interactive);
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} else if (ev->type() == QEvent::Hide) {
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QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
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for (int i = 0; i < hv->count(); ++i)
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hv->setSectionResizeMode(i, i == m_columnToStretch
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? QHeaderView::Stretch : QHeaderView::ResizeToContents);
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} else if (ev->type() == QEvent::Resize) {
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QHeaderView *hv = qobject_cast<QHeaderView*>(obj);
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if (hv->sectionResizeMode(m_columnToStretch) == QHeaderView::Interactive) {
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QResizeEvent *re = static_cast<QResizeEvent*>(ev);
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int diff = re->size().width() - re->oldSize().width() ;
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hv->resizeSection(m_columnToStretch, qMax(32, hv->sectionSize(m_columnToStretch) + diff));
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}
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}
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}
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return false;
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}
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