VuoSpinBox.cc

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#include "VuoSpinBox.hh"
 
VuoSpinBox::VuoSpinBox(QWidget *parent)
    : QSpinBox(parent)
{
    buttonMinimum = INT_MIN;
    buttonMaximum = INT_MAX;
 
    setKeyboardTracking(false);
    unsetLineEditBounds();
}
 
QAbstractSpinBox::StepEnabled VuoSpinBox::stepEnabled() const
{
    int v = valueFromText(text());
    QAbstractSpinBox::StepEnabled e = 0;
    if (v > buttonMinimum)
        e |= StepDownEnabled;
    if (v < buttonMaximum)
        e |= StepUpEnabled;
    return e;
}
 
void VuoSpinBox::stepBy(int steps)
{
    int _value = valueFromText(text());
    int _singleStep = singleStep();
 
    if (_singleStep > 0)
    {
        if (_value + steps * _singleStep < buttonMinimum)
        {
            setValue(buttonMinimum);
            return;
        }
        else if (_value + steps * _singleStep > buttonMaximum)
        {
            setValue(buttonMaximum);
            return;
        }
    }
 
    QSpinBox::stepBy(steps);
}
 
void VuoSpinBox::unsetLineEditBounds()
{
    setMinimum(INT_MIN);
    setMaximum(INT_MAX);
}
 
void VuoSpinBox::setButtonMinimum(int buttonMinimum)
{
    this->buttonMinimum = buttonMinimum;
}
 
void VuoSpinBox::setButtonMaximum(int buttonMaximum)
{
    this->buttonMaximum = buttonMaximum;
}
 
void VuoSpinBox::focusOutEvent(QFocusEvent * event)
{
    Qt::FocusReason reason = event->reason();
 
    // if tabbing lost focus, keep the value
    if( reason == Qt::MouseFocusReason ||
        reason == Qt::TabFocusReason ||
        reason == Qt::BacktabFocusReason )
        QSpinBox::focusOutEvent(event);
}
 
void VuoSpinBox::hideEvent(QHideEvent * event)
{
    // If hideEvent is called while the window still has focus
    // that means the mouse clicked outside the window and we
    // should commit the changes.
    //
    // This is necessary because in focusOutEvent the FocusReason
    // does not distinguish the difference between clicking
    // outside a window and hitting Escape to exit - both
    // return "ActiveWindowFocusReason"
 
    if(hasFocus())
        QSpinBox::hideEvent(event);
}