WheelEventEater Class Reference

Description

Event filter to install on combo boxes and spin boxes to not to react on wheel events during scrolling of InstrumentComponentWidget.

Definition at line 34 of file CustomEventFilters.h.

Inheritance diagram for WheelEventEater:

Collaboration diagram for WheelEventEater:

Public Member Functions
	WheelEventEater (QObject *parent=nullptr)

Static Public Member Functions
static void	install (QObject *obj)

Protected Member Functions
bool	eventFilter (QObject *obj, QEvent *event) override

Constructor & Destructor Documentation

WheelEventEater()

WheelEventEater::WheelEventEater

(

QObject *

parent = nullptr

)

Definition at line 41 of file CustomEventFilters.cpp.

    : QObject(parent)
{
}

Referenced by install().

Member Function Documentation

eventFilter()

bool WheelEventEater::eventFilter ( QObject *  obj, QEvent *  event  )

overrideprotected

Definition at line 52 of file CustomEventFilters.cpp.

{
    if (auto* spinBox = qobject_cast<QAbstractSpinBox*>(obj)) {
        if (event->type() == QEvent::Wheel) {
            if (spinBox->focusPolicy() == Qt::WheelFocus) {
                event->accept();
                return false;
            }
            event->ignore();
            return true;
        }
        if (event->type() == QEvent::FocusIn)
            spinBox->setFocusPolicy(Qt::WheelFocus);
        else if (event->type() == QEvent::FocusOut)
            spinBox->setFocusPolicy(Qt::StrongFocus);
    } else if (qobject_cast<QComboBox*>(obj)) {
        if (event->type() == QEvent::Wheel) {
            event->ignore();
            return true;
        }
        event->accept();
        return false;
    }
    return QObject::eventFilter(obj, event);
}

install()

void WheelEventEater::install ( QObject *  obj )

static

Definition at line 46 of file CustomEventFilters.cpp.

{
    auto* p = new WheelEventEater(obj);
    obj->installEventFilter(p);
}

References WheelEventEater().

Referenced by InterferenceForm::InterferenceForm(), MesoCrystalForm::createBasisCombo(), GUI::Util::createSelectionCombo(), and AbstractSelectionContainerForm::initUI().

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The documentation for this class was generated from the following files:

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Common/CustomEventFilters.h
• /home/build/builds/o5h8MZZm/0/mlz/bornagain/GUI/View/Common/CustomEventFilters.cpp