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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "elidinglabel.h"
#include <QFontMetrics>
#include <QPainter>
#include <QStyle>
/*!
\class Utils::ElidingLabel
\brief The ElidingLabel class is a label suitable for displaying elided
text.
*/
namespace Utils {
ElidingLabel::ElidingLabel(QWidget *parent)
: ElidingLabel({}, parent)
{
}
ElidingLabel::ElidingLabel(const QString &text, QWidget *parent)
: QLabel(text, parent)
{
setElideMode(Qt::ElideRight);
}
Qt::TextElideMode ElidingLabel::elideMode() const
{
return m_elideMode;
}
void ElidingLabel::setElideMode(const Qt::TextElideMode &elideMode)
{
m_elideMode = elideMode;
if (elideMode == Qt::ElideNone)
setToolTip({});
setSizePolicy(QSizePolicy(
m_elideMode == Qt::ElideNone ? QSizePolicy::Preferred : QSizePolicy::Ignored,
QSizePolicy::Preferred,
QSizePolicy::Label));
update();
}
void ElidingLabel::paintEvent(QPaintEvent *)
{
if (m_elideMode == Qt::ElideNone) {
QLabel::paintEvent(nullptr);
return;
}
const int m = margin();
QRect contents = contentsRect().adjusted(m, m, -m, -m);
QFontMetrics fm = fontMetrics();
QString txt = text();
if (txt.length() > 4 && fm.horizontalAdvance(txt) > contents.width()) {
setToolTip(txt);
txt = fm.elidedText(txt, m_elideMode, contents.width());
} else {
setToolTip(QString());
}
int flags = QStyle::visualAlignment(layoutDirection(), alignment()) | Qt::TextSingleLine;
QPainter painter(this);
drawFrame(&painter);
painter.drawText(contents, flags, txt);
}
} // namespace Utils
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