StatusIndication.cpp

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/*
 * This file is part of ArmarX.
 *
 * ArmarX is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * ArmarX 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 this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * \package    ArmarXGui::gui-plugins::StatusIndication
 * \author     Leonie Leven
 * \date       2024
 * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
 *             GNU General Public License
 */
 
 
// ArmarX
#include "StatusIndication.h"
 
#include <QDebug>
#include <QFontMetrics>
 
#include <ArmarXCore/core/application/Application.h>
 
namespace armarx
 
{
    StatusIndicationLabel::StatusIndicationLabel(QWidget* parent) : QLabel(parent)
    {
        setAlignment(Qt::AlignCenter);
        setWordWrap(true);
    }
 
    void
    StatusIndicationLabel::setTextWithScaling(const QString& text)
    {
        this->m_text = text;
        setText(this->m_text);
        this->adjustFontSize();
    }
 
    void
    StatusIndicationLabel::resizeEvent(QResizeEvent* event)
    {
        QLabel::resizeEvent(event);
        adjustFontSize();
    }
 
    void
    StatusIndicationLabel::adjustFontSize()
    {
        if (m_text.isEmpty())
            return;
 
        QFont font = this->font();
        QRect availableRect = contentsRect();
 
 
        int fontSize = font.pointSize();
        if (fontSize == -1)
            fontSize = 12; // dafault value if no size is set
 
        QFontMetrics metrics(font);
 
        // upscaling font size
        while (true)
        {
            font.setPointSize(fontSize + 1);
            metrics = QFontMetrics(font);
 
            QRect textRect = metrics.boundingRect(availableRect, Qt::TextWordWrap, m_text);
 
            if (textRect.width() > availableRect.width() ||
                textRect.height() > availableRect.height())
            {
                break; // exit if text does not fit
            }
 
            fontSize++;
        }
 
 
        font.setPointSize(fontSize);
        metrics = QFontMetrics(font);
 
        // downscaling font size
        while (fontSize > 1)
        {
            QRect textRect = metrics.boundingRect(availableRect, Qt::TextWordWrap, m_text);
 
            if (textRect.width() <= availableRect.width() &&
                textRect.height() <= availableRect.height())
            {
                break; // exit when maximum suitable font size has been found
            }
 
            fontSize--;
            font.setPointSize(fontSize);
            metrics = QFontMetrics(font);
        }
 
        setFont(font);
    }
} // namespace armarx