qTox/widget/croppinglabel.cpp

/*
    Copyright (C) 2014 by Project Tox <https://tox.im>

    This file is part of qTox, a Qt-based graphical interface for Tox.

    This program 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.
    This program 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 COPYING file for more details.
*/

#include "croppinglabel.h"

CroppingLabel::CroppingLabel(QWidget* parent)
    : QLabel(parent)
{
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
}

void CroppingLabel::setText(const QString& text)
{
    origText = text.trimmed();
    setElidedText();
}

void CroppingLabel::resizeEvent(QResizeEvent* ev)
{
    setElidedText();
    QLabel::resizeEvent(ev);
}

QSize CroppingLabel::sizeHint() const
{
    return QSize(0, QLabel::sizeHint().height());
}

QSize CroppingLabel::minimumSizeHint() const
{
    return QSize(fontMetrics().width("..."), QLabel::minimumSizeHint().height());
}

void CroppingLabel::setElidedText()
{
    QString elidedText = fontMetrics().elidedText(origText, Qt::ElideRight, width());
    if (elidedText != origText)
        setToolTip(origText);
    else
        setToolTip(QString());

    QLabel::setText(elidedText);
}