lyx_mirror/src/frontends/qt4/GuiMenubar.cpp

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/**
* \file qt4/GuiMenubar.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "GuiMenubar.h"
#include "Action.h"
#include "GuiApplication.h"
#include "GuiPopupMenu.h"
#include "GuiView.h"
#include "qt_helpers.h"
#include "MenuBackend.h"
#include "support/debug.h"
#include <QCursor>
#include <QMenuBar>
namespace lyx {
namespace frontend {
// MacOSX specific stuff is at the end.
GuiMenubar::GuiMenubar(GuiView * view)
: owner_(view)
{
init();
}
void GuiMenubar::init()
{
// Clear all menubar contents before filling it.
owner_->menuBar()->clear();
#ifdef Q_WS_MACX
// setup special mac specific menu item
macxMenuBarInit();
#endif
/// menu controller
MenuBackend & menu_backend = guiApp->menuBackend();
LYXERR(Debug::GUI, "populating menu bar" << to_utf8(menu_backend.getMenubar().name()));
if (menu_backend.getMenubar().size() == 0) {
LYXERR(Debug::GUI, "\tERROR: empty menu bar"
<< to_utf8(menu_backend.getMenubar().name()));
return;
// continue;
}
else {
LYXERR(Debug::GUI, "menu bar entries "
<< menu_backend.getMenubar().size());
}
Menu menu;
menu_backend.expand(menu_backend.getMenubar(), menu, owner_->buffer());
Menu::const_iterator m = menu.begin();
Menu::const_iterator end = menu.end();
for (; m != end; ++m) {
if (m->kind() != MenuItem::Submenu) {
LYXERR(Debug::GUI, "\tERROR: not a submenu " << to_utf8(m->label()));
continue;
}
LYXERR(Debug::GUI, "menu bar item " << to_utf8(m->label())
<< " is a submenu named " << to_utf8(m->submenuname()));
docstring name = m->submenuname();
if (!menu_backend.hasMenu(name)) {
LYXERR(Debug::GUI, "\tERROR: " << to_utf8(name)
<< " submenu has no menu!");
continue;
}
Menu menu;
menu_backend.expand(menu_backend.getMenubar(), menu, owner_->buffer());
GuiPopupMenu * qMenu = new GuiPopupMenu(owner_, *m, true);
owner_->menuBar()->addMenu(qMenu);
name_map_[toqstr(name)] = qMenu;
}
}
GuiMenubar::~GuiMenubar() {}
void GuiMenubar::openByName(QString const & name)
{
if (QMenu * menu = name_map_.value(name))
menu->exec(QCursor::pos());
}
/// Some special Qt/Mac support hacks
/*
Here is what the Qt documentation says about how a menubar is chosen:
1) If the window has a QMenuBar then it is used. 2) If the window
is a modal then its menubar is used. If no menubar is specified
then a default menubar is used (as documented below) 3) If the
window has no parent then the default menubar is used (as
documented below).
The above 3 steps are applied all the way up the parent window
chain until one of the above are satisifed. If all else fails a
default menubar will be created, the default menubar on Qt/Mac is
an empty menubar, however you can create a different default
menubar by creating a parentless QMenuBar, the first one created
will thus be designated the default menubar, and will be used
whenever a default menubar is needed.
Thus, for Qt/Mac, we add the menus to a free standing menubar, so
that this menubar will be used also when one of LyX' dialogs has
focus. (JMarc)
*/
void GuiMenubar::macxMenuBarInit()
{
/* Since Qt 4.2, the qt/mac menu code has special code for
specifying the role of a menu entry. However, it does not
work very well with our scheme of creating menus on demand,
and therefore we need to put these entries in a special
invisible menu. (JMarc)
*/
/* The entries of our special mac menu. If we add support for
* special entries in MenuBackend, we could imagine something
* like
* SpecialItem About " "About LyX" "dialog-show aboutlyx"
* and therefore avoid hardcoding. I am not sure it is worth
* the hassle, though. (JMarc)
*/
struct MacMenuEntry {
kb_action action;
char const * arg;
char const * label;
QAction::MenuRole role;
};
MacMenuEntry entries[] = {
{LFUN_DIALOG_SHOW, "aboutlyx", "About LyX",
QAction::AboutRole},
{LFUN_DIALOG_SHOW, "prefs", "Preferences",
QAction::PreferencesRole},
{LFUN_RECONFIGURE, "", "Reconfigure",
QAction::ApplicationSpecificRole},
{LFUN_LYX_QUIT, "", "Quit LyX", QAction::QuitRole}
};
const size_t num_entries = sizeof(entries) / sizeof(MacMenuEntry);
// the special menu for MenuBackend.
Menu special;
for (size_t i = 0 ; i < num_entries ; ++i) {
FuncRequest const func(entries[i].action,
from_utf8(entries[i].arg));
special.add(MenuItem(MenuItem::Command,
from_utf8(entries[i].label),
func));
}
MenuBackend & menu_backend = guiApp->menuBackend();
menu_backend.specialMenu(special);
// add the entries to a QMenu that will eventually be empty
// and therefore invisible.
QMenu * qMenu = owner_->menuBar()->addMenu("special");
// we do not use 'special' because it is a temporary variable,
// whereas MenuBackend::specialMenu points to a persistent
// copy.
Menu::const_iterator cit = menu_backend.specialMenu().begin();
Menu::const_iterator end = menu_backend.specialMenu().end();
for (size_t i = 0 ; cit != end ; ++cit, ++i) {
Action * action = new Action(*owner_, QIcon(),
toqstr(cit->label()),
cit->func(), QString());
action->setMenuRole(entries[i].role);
qMenu->addAction(action);
}
}
} // namespace frontend
} // namespace lyx
#include "GuiMenubar_moc.cpp"