/*!
\reimp
*/
bool QButtonGroup::event( QEvent * e )
{
if ( e->type() == QEvent::ChildInserted ) {
QChildEvent * ce = (QChildEvent *) e;
if ( radio_excl && ::qt_cast<QRadioButton*>(ce->child()) ) {
QButton * button = (QButton *) ce->child();
if ( button->isToggleButton() && !button->isOn() &&
selected() && (selected()->focusPolicy() & TabFocus) != 0 )
button->setFocusPolicy( (FocusPolicy)(button->focusPolicy() &
~TabFocus) );
}
}
return QGroupBox::event( e );
}
void QButtonGroup::buttonToggled( bool on )
{
// introduce a QButtonListIt if calling anything
if ( !on || !excl_grp && !radio_excl )
return;
QButton *bt = ::qt_cast<QButton*>(sender()); // object that sent the signal
#if defined(QT_CHECK_NULL)
Q_ASSERT( bt );
Q_ASSERT( bt->isToggleButton() );
#endif
if ( !excl_grp && !::qt_cast<QRadioButton*>(bt) )
return;
QButtonItem * i = buttons->first();
bool hasTabFocus = FALSE;
while( i != 0 && hasTabFocus == FALSE ) {
if ( ( excl_grp || ::qt_cast<QRadioButton*>(i->button) ) &&
(i->button->focusPolicy() & TabFocus) )
hasTabFocus = TRUE;
i = buttons->next();
}
i = buttons->first();
while( i ) {
if ( bt != i->button &&
i->button->isToggleButton() &&
i->button->isOn() &&
( excl_grp || ::qt_cast<QRadioButton*>(i->button) ) )
i->button->setOn( FALSE );
if ( ( excl_grp || ::qt_cast<QRadioButton*>(i->button) ) &&
i->button->isToggleButton() &&
hasTabFocus )
i->button->setFocusPolicy( (FocusPolicy)(i->button->focusPolicy() &
~TabFocus) );
i = buttons->next();
}
if ( hasTabFocus )
bt->setFocusPolicy( (FocusPolicy)(bt->focusPolicy() | TabFocus) );
}
void QButtonGroup::moveFocus( int key )
{
QWidget * f = qApp->focusWidget();
QButtonItem * i;
i = buttons->first();
while( i && i->button != f )
i = buttons->next();
if ( !i || !i->button )
return;
QWidget * candidate = 0;
int bestScore = -1;
QPoint goal( f->mapToGlobal( f->geometry().center() ) );
i = buttons->first();
while( i && i->button ) {
if ( i->button != f &&
i->button->isEnabled() ) {
QPoint p(i->button->mapToGlobal(i->button->geometry().center()));
int score = (p.y() - goal.y())*(p.y() - goal.y()) +
(p.x() - goal.x())*(p.x() - goal.x());
bool betterScore = score < bestScore || !candidate;
switch( key ) {
case Key_Up:
if ( p.y() < goal.y() && betterScore ) {
if ( QABS( p.x() - goal.x() ) < QABS( p.y() - goal.y() ) ) {
candidate = i->button;
bestScore = score;
} else if ( i->button->x() == f->x() ) {
candidate = i->button;
bestScore = score/2;
}
}
break;
case Key_Down:
if ( p.y() > goal.y() && betterScore ) {
if ( QABS( p.x() - goal.x() ) < QABS( p.y() - goal.y() ) ) {
candidate = i->button;
bestScore = score;
} else if ( i->button->x() == f->x() ) {
candidate = i->button;
bestScore = score/2;
}
}
break;
case Key_Left:
if ( p.x() < goal.x() && betterScore ) {
if ( QABS( p.y() - goal.y() ) < QABS( p.x() - goal.x() ) ) {
candidate = i->button;
bestScore = score;
} else if ( i->button->y() == f->y() ) {
candidate = i->button;
bestScore = score/2;
}
}
break;
case Key_Right:
if ( p.x() > goal.x() && betterScore ) {
if ( QABS( p.y() - goal.y() ) < QABS( p.x() - goal.x() ) ) {
candidate = i->button;
bestScore = score;
} else if ( i->button->y() == f->y() ) {
candidate = i->button;
bestScore = score/2;
}
}
break;
}
}
i = buttons->next();
}
QButton *buttoncand = ::qt_cast<QButton*>(candidate);
if ( buttoncand && ::qt_cast<QButton*>(f) &&
((QButton*)f)->isOn() &&
buttoncand->isToggleButton() &&
( isExclusive() || ( ::qt_cast<QRadioButton*>(f) &&
::qt_cast<QRadioButton*>(candidate)))) {
if ( f->focusPolicy() & TabFocus ) {
f->setFocusPolicy( (FocusPolicy)(f->focusPolicy() & ~TabFocus) );
candidate->setFocusPolicy( (FocusPolicy)(candidate->focusPolicy()|
TabFocus) );
}
buttoncand->setOn( TRUE );
buttoncand->animateClick();
buttoncand->animateTimeout(); // ### crude l&f hack
}
if ( candidate ) {
if (key == Key_Up || key == Key_Left)
QFocusEvent::setReason(QFocusEvent::Backtab);
else
QFocusEvent::setReason(QFocusEvent::Tab);
candidate->setFocus();
QFocusEvent::resetReason();
}
}