pilotclient/src/blackgui/elidedpushbutton.cpp

/* Copyright (C) 2019
 * swift project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 */

#include "elidedpushbutton.h"

#include <QPainter>
#include <QTextLine>
#include <QFontMetrics>

namespace BlackGui
{
    CElidedPushButton::CElidedPushButton(QWidget *parent) : QPushButton(parent)
    { }

    CElidedPushButton::CElidedPushButton(const QString &text, QWidget *parent)
        : QPushButton(parent), m_elided(false), m_content(text)
    {
        this->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
    }

    void CElidedPushButton::setText(const QString &newText)
    {
        m_content = newText;
        this->update();
    }

    void CElidedPushButton::paintEvent(QPaintEvent *event)
    {
        QPainter painter(this);
        const QFontMetrics fontMetrics = painter.fontMetrics();
        const int usableWidth = qRound(0.9 * this->width());

        const QString elidedText = fontMetrics.elidedText(m_content, Qt::ElideRight, usableWidth);
        m_elided = (elidedText != m_content);
        QPushButton::setText(elidedText);
        QPushButton::paintEvent(event);
    }
} // ns