TabFromFocusProxy Class Reference

Propagate tab events from focusProxy to parent. More...

Inheritance diagram for TabFromFocusProxy:

Collaboration diagram for TabFromFocusProxy:

Public Member Functions
	TabFromFocusProxy (QWidget *parent=0)
	Passing focus-related events from child widget (e.g. More...

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

Protected Attributes
QWidget *	m_parent

Detailed Description

Propagate tab events from focusProxy to parent.

Definition at line 97 of file CustomEventFilters.h.

Constructor & Destructor Documentation

TabFromFocusProxy()

TabFromFocusProxy::TabFromFocusProxy

(

QWidget *

parent = 0

)

Passing focus-related events from child widget (e.g.

QSpinBox) to parent (e.g. IntEditor) to trigger QTreeView delegate's mechanism to switch editors on "tab" press key. https://stackoverflow.com/questions/12145522/why-pressing-of-tab-key-emits-only-qeventshortcutoverride-event

Definition at line 153 of file CustomEventFilters.cpp.

                                                    : QObject(parent), m_parent(parent)
{
    if (parent->focusProxy())
        parent->focusProxy()->installEventFilter(this);
}

Member Function Documentation

eventFilter()

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

protected

Definition at line 159 of file CustomEventFilters.cpp.

{
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
        if (keyEvent->key() == Qt::Key_Tab || keyEvent->key() == Qt::Key_Backtab) {
            // we are posting event as if m_parent had "tab" key
            QApplication::postEvent(
                m_parent, new QKeyEvent(keyEvent->type(), keyEvent->key(), keyEvent->modifiers()));
 
            // but still let the origin (QSpinBox) to process it
            return false; // process
        }
    }
 
    else if (event->type() == QEvent::FocusOut) {
        QFocusEvent* focusEvent = static_cast<QFocusEvent*>(event);
        QApplication::postEvent(this, new QFocusEvent(focusEvent->type(), focusEvent->reason()));
 
        // Don't filter because focus can be changed internally in editor
        return false;
    }
 
    return QObject::eventFilter(obj, event);
}

References m_parent.

Member Data Documentation

m_parent

QWidget* TabFromFocusProxy::m_parent

protected

Definition at line 104 of file CustomEventFilters.h.

Referenced by eventFilter().

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

• /home/www/ba/GUI/coregui/utils/CustomEventFilters.h
• /home/www/ba/GUI/coregui/utils/CustomEventFilters.cpp