EllipsisPushButton.cpp

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#include "EllipsisPushButton.h"
 
EllipsisPushButton::EllipsisPushButton(QWidget* parent) : QPushButton(parent)
{
}
 
EllipsisPushButton::EllipsisPushButton(const QString& text, QWidget* parent) :
    QPushButton(text, parent)
{
}
 
void
EllipsisPushButton::startTimeout(double timeoutSec)
{
    if (timeoutSec <= 0.0)
        return;
 
    this->timeoutSec = timeoutSec;
    elapsedSec = 0.0;
    progressActive = true;
 
    setToolTip(QString("Timeout in %1 sec").arg(timeoutSec, 0, 'f', 1));
 
    if (!progressTimer.isActive())
    {
        connect(&progressTimer,
                &QTimer::timeout,
                this,
                [this]()
                {
                    elapsedSec += 0.05;
                    double remaining = std::max(0.0, this->timeoutSec - elapsedSec);
                    setToolTip(QString("Timeout in %1 sec").arg(remaining, 0, 'f', 1));
                    update();
                });
    }
 
    progressTimer.start(50); // 20 FPS
}
 
void
EllipsisPushButton::finishProgress(bool failed)
{
    if (!progressActive)
        return;
 
    elapsedSec = timeoutSec;
    progressActive = false;
    progressTimer.stop();
    setToolTip(QString("Execute"));
 
    if (resetColorTimer.isActive())
        resetColorTimer.stop();
    QColor color = failed ? QColor(Qt::red) : QColor(Qt::green);
    this->originalStyle = styleSheet();
    setStyleSheet(QString("background-color: %1").arg(color.name()));
 
    resetColorTimer.setSingleShot(true);
    connect(&resetColorTimer, &QTimer::timeout, this, [this]() { setStyleSheet(originalStyle); });
    resetColorTimer.start(1000);
 
    update();
}
 
void
EllipsisPushButton::mousePressEvent(QMouseEvent* event)
{
 
    if (resetColorTimer.isActive())
    {
        resetColorTimer.stop();
        setStyleSheet(originalStyle);
    }
 
    QPushButton::mousePressEvent(event);
}
 
void
EllipsisPushButton::paintEvent(QPaintEvent* event)
{
    QString fullText = text();
    QFontMetrics metrics(font());
    int textWidth = width() - 6;
    QString elided = metrics.elidedText(fullText, Qt::ElideRight, textWidth);
 
    setText(elided);
 
    QPushButton::paintEvent(event);
 
    setText(fullText);
 
    // ==== Progress-Bar ====
    if (!progressActive || timeoutSec <= 0.0)
        return;
 
    QPainter p(this);
    p.setRenderHint(QPainter::Antialiasing);
 
    double percent = std::min(1.0, elapsedSec / timeoutSec);
 
    int barHeight = height() * 0.25;
    int barWidth = static_cast<int>(width() * percent);
 
    QRect barRect(0, height() - barHeight, barWidth, barHeight);
 
    QLinearGradient grad(barRect.topLeft(), barRect.topRight());
    grad.setColorAt(0.0, QColor(180, 40, 40));
    grad.setColorAt(1.0, QColor(255, 80, 80));
 
    p.fillRect(barRect, grad);
}