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/****************************************************************************
**
** Copyright (C) 2014 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 "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)
: QLabel(parent), m_elideMode(Qt::ElideRight)
{
setSizePolicy(QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred, QSizePolicy::Label));
}
ElidingLabel::ElidingLabel(const QString &text, QWidget *parent)
: QLabel(text, parent), m_elideMode(Qt::ElideRight)
{
setSizePolicy(QSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred, QSizePolicy::Label));
}
Qt::TextElideMode ElidingLabel::elideMode() const
{
return m_elideMode;
}
void ElidingLabel::setElideMode(const Qt::TextElideMode &elideMode)
{
m_elideMode = elideMode;
update();
}
void ElidingLabel::paintEvent(QPaintEvent *)
{
const int m = margin();
QRect contents = contentsRect().adjusted(m, m, -m, -m);
QFontMetrics fm = fontMetrics();
QString txt = text();
if (txt.length() > 4 && fm.width(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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