本文整理汇总了C++中KMenu::isEmpty方法的典型用法代码示例。如果您正苦于以下问题：C++ KMenu::isEmpty方法的具体用法？C++ KMenu::isEmpty怎么用？C++ KMenu::isEmpty使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类KMenu的用法示例。
在下文中一共展示了KMenu::isEmpty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: contextMenuRequested
// build a context menu
void UserMenuTree::contextMenuRequested(const QPoint &pos)
{
KILE_DEBUG() << "context menu requested ..." ;
m_popupItem = dynamic_cast<UserMenuItem*>(itemAt(pos));
if ( !m_popupItem ) {
KILE_DEBUG() << "... no item found";
return;
}
KILE_DEBUG() << "... popup item found: " << m_popupItem->text(0);
bool submenu = ( m_popupItem->menutype() == UserMenuData::Submenu );
bool separator = ( m_popupItem->menutype() == UserMenuData::Separator );
KMenu popup;
QAction *action = NULL;
QSignalMapper signalMapper;
connect(&signalMapper, SIGNAL(mapped(int)), this, SLOT(slotPopupActivated(int)));
// insert standard menu items
action = popup.addAction(KIcon("usermenu-insert-above.png"),i18n("Insert above"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_INSERT_ABOVE);
action = popup.addAction(KIcon("usermenu-insert-below.png"),i18n("Insert below"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_INSERT_BELOW);
popup.addSeparator();
// insert separators
if ( !separator ) {
action = popup.addAction(KIcon("usermenu-separator-above.png"),i18n("Insert a separator above"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SEPARATOR_ABOVE);
action = popup.addAction(KIcon("usermenu-separator-below.png"),i18n("Insert a separator below"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SEPARATOR_BELOW);
popup.addSeparator();
}
// insert submenus
action = popup.addAction(KIcon("usermenu-submenu-above.png"),i18n("Insert a submenu above"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SUBMENU_ABOVE);
action = popup.addAction(KIcon("usermenu-submenu-below.png"),i18n("Insert a submenu below"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SUBMENU_BELOW);
popup.addSeparator();
// insert into submenus
if ( submenu ) {
action = popup.addAction(KIcon("usermenu-into-submenu.png"),i18n("Insert into this submenu"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_INTO_SUBMENU);
action = popup.addAction(i18n("Insert a separator into this submenu"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SEPARATOR_INTO_SUBMENU);
action = popup.addAction(i18n("Insert a submenu into this submenu"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_SUBMENU_INTO_SUBMENU);
popup.addSeparator();
}
// delete actions
action = popup.addAction(KIcon("usermenu-delete.png"),i18n("Delete this item"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action,POPUP_DELETE_ITEM);
popup.addSeparator();
action = popup.addAction(KIcon("usermenu-clear.png"),i18n("Delete the complete tree"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_DELETE_TREE);
// expand/collapse tree
if ( submenu ) {
popup.addSeparator();
if ( m_popupItem->isExpanded() ) {
action = popup.addAction(i18n("Collapse submenu"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action,POPUP_COLLAPSE_ITEM);
}
else {
action = popup.addAction(i18n("Expand submenu"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action,POPUP_EXPAND_ITEM);
}
popup.addSeparator();
action = popup.addAction(i18n("Collapse complete tree"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action,POPUP_COLLAPSE_TREE);
action = popup.addAction(i18n("Expand complete tree"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action,POPUP_EXPAND_TREE);
}
// if there are any errors with this item, some info is available
int error = m_popupItem->data(0,Qt::UserRole+2).toInt();
if ( error != UserMenuItem::MODEL_ERROR_NONE ) {
popup.addSeparator();
action = popup.addAction(KIcon("help-about.png"),i18n("Info"), &signalMapper, SLOT(map()));
signalMapper.setMapping(action, POPUP_ITEM_INFO);
}
// const QPoint& pos parameter in the customContextMenuRequested() signal is normally in widget coordinates.
// But classes like QTreeWidget, which inherit from QAbstractScrollArea1 instead use the coordinates of their viewport()
if ( !popup.isEmpty() ) {
popup.exec( viewport()->mapToGlobal(pos) );
}
}