StyleSheet set is slow



  • HI,

    I tried to set the style sheet. It gets effected, but takes a second to update in UI.
    I am trying to change border on mouse press. I need to keep my widget pressed for a second for the change to appear

    @void PosButton::mouseReleaseEvent(QMouseEvent *event)
    {
    qDebug() << Q_FUNC_INFO << "Invoked";

    if(rect().contains(event->pos()))
    {
        qDebug() << Q_FUNC_INFO << "Emit click";
        emit clicked(this->objectName());
    }
    
    m_pBaseWidget->setStyleSheet("QFrame#baseWidget {"
                          "border: 1px solid black;"
                          "border-top-width: 0;"
                          "border-left-width: 0;"
                          "border-style: outset;}"
                  );
    
    qDebug() << Q_FUNC_INFO << "Exits";
    return;
    

    }

    void PosButton::mousePressEvent(QMouseEvent *event)
    {
    qDebug() << Q_FUNC_INFO << "Invoked";
    Q_UNUSED(event);

    m_pBaseWidget->setStyleSheet("QFrame#baseWidget {"
                          "border: 2px solid orange;"
                          "border-top-width: 0;"
                          "border-left-width: 0;"
                          "border-style: outset;}"
                  );
    
    qDebug() << Q_FUNC_INFO << "Exits";
    return;
    

    }@

    PosButton is derived from QWidget. I am trying to set style for the QFrame baseWidget inside it.

    Also I tried setting property and change but I'm not sure if the style sheet statement I use is in right way

    @PosButton[pressed="true"] QFrame#baseWidget
    {
    border: 2px solid orange;
    border-top-width: 0;
    border-left-width: 0;
    border-style: outset;
    }

    PosButton[pressed="false"] QFrame#baseWidget
    {
    border: 1px solid black;
    border-top-width: 0;
    border-left-width: 0;
    border-style: outset;
    }
    @


  • Lifetime Qt Champion

    Hi,

    Might be a silly question but, why don't you style a QPushButton ?



  • SGaist,

    I use this class as multiple types of buttons.. It has 4 labels of which one has image set on it. In total it is a customized button. So I am forced to use a custom widget instead of QPushButton.



  • Thanks,

    I resolved this issue by setting a timer on the mouse release. The timeout will reset the style of the button

    @void PosButton::mouseReleaseEvent(QMouseEvent *event)
    {
    qDebug() << Q_FUNC_INFO << "Invoked";

    if(rect().contains(event->pos()))
    {
        qDebug() << Q_FUNC_INFO << "Emit click";
        emit clicked(this->objectName());
    }
    
    QTimer::singleShot(150, this, SLOT(styleTimeout()));
    
    qDebug() << Q_FUNC_INFO << "Exits";
    return;
    

    }

    void PosButton::mousePressEvent(QMouseEvent *event)
    {
    qDebug() << Q_FUNC_INFO << "Invoked";
    Q_UNUSED(event);

    m_pBaseWidget->setStyleSheet("QFrame#baseWidget {"
                          "border: 2px solid orange;"
                          "border-top-width: 0;"
                          "border-left-width: 0;"
                          "border-style: outset;}"
                  );
    
    qDebug() << Q_FUNC_INFO << "Exits";
    return;
    

    }

    void PosButton::styleTimeout()
    {
    qDebug() << Q_FUNC_INFO << "Invoked";

    if (NULL != m_pBaseWidget)
    {
        qDebug() << Q_FUNC_INFO << "set style";
        m_pBaseWidget->setStyleSheet("QFrame#baseWidget {"
                              "border: 1px solid black;"
                              "border-top-width: 0;"
                              "border-left-width: 0;"
                              "border-style: outset;}"
                      );
    }
    
    qDebug() << Q_FUNC_INFO << "Exits";
    return;
    

    }@


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