adjustingscrollarea.cpp

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/*
    Copyright © 2014-2019 by The qTox Project Contributors
 
    This file is part of qTox, a Qt-based graphical interface for Tox.
 
    qTox is libre software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    qTox is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#include "adjustingscrollarea.h"
 
#include <QDebug>
#include <QEvent>
#include <QLayout>
#include <QScrollBar>
 
AdjustingScrollArea::AdjustingScrollArea(QWidget* parent)
    : QScrollArea(parent)
{
}
 
void AdjustingScrollArea::resizeEvent(QResizeEvent* ev)
{
    int scrollBarWidth =
        verticalScrollBar()->isVisible() ? verticalScrollBar()->sizeHint().width() : 0;
 
    if (layoutDirection() == Qt::RightToLeft)
        setViewportMargins(-scrollBarWidth, 0, 0, 0);
 
    updateGeometry();
    QScrollArea::resizeEvent(ev);
}
 
QSize AdjustingScrollArea::sizeHint() const
{
    if (widget()) {
        int scrollbarWidth = verticalScrollBar()->isVisible() ? verticalScrollBar()->width() : 0;
        return widget()->sizeHint() + QSize(scrollbarWidth, 0);
    }
 
    return QScrollArea::sizeHint();
}