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livetrax/gtk2_ardour/sync-menu.c
David Robillard bb457bb960 Merge libs/ardour and gtk2_ardour with 2.0-ongoing R2837. 
git-svn-id: svn://localhost/ardour2/trunk@2883 d708f5d6-7413-0410-9779-e7cbd77b26cf
2008-01-10 21:20:59 +00:00

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/* GTK+ Integration for the Mac OS X Menubar.
*
* Copyright (C) 2007 Pioneer Research Center USA, Inc.
* Copyright (C) 2007 Imendio AB
*
* For further information, see:
* http://developer.imendio.com/projects/gtk-macosx/menubar
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version 2.1
* of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <Carbon/Carbon.h>
#include "ige-mac-menu.h"
/* TODO
*
* - Sync adding/removing/reordering items
* - Create on demand? (can this be done with gtk+? ie fill in menu
items when the menu is opened)
* - Figure out what to do per app/window...
*
*/
#define IGE_QUARTZ_MENU_CREATOR 'IGEC'
#define IGE_QUARTZ_ITEM_WIDGET 'IWID'
static void sync_menu_shell (GtkMenuShell *menu_shell,
MenuRef carbon_menu,
gboolean toplevel,
gboolean debug);
/*
* utility functions
*/
static GtkWidget *
find_menu_label (GtkWidget *widget)
{
GtkWidget *label = NULL;
if (GTK_IS_LABEL (widget))
return widget;
if (GTK_IS_CONTAINER (widget))
{
GList *children;
GList *l;
children = gtk_container_get_children (GTK_CONTAINER (widget));
for (l = children; l; l = l->next)
{
label = find_menu_label (l->data);
if (label)
break;
}
g_list_free (children);
}
return label;
}
static const gchar *
get_menu_label_text (GtkWidget *menu_item,
GtkWidget **label)
{
GtkWidget *my_label;
my_label = find_menu_label (menu_item);
if (label)
*label = my_label;
if (my_label)
return gtk_label_get_text (GTK_LABEL (my_label));
return NULL;
}
static gboolean
accel_find_func (GtkAccelKey *key,
GClosure *closure,
gpointer data)
{
return (GClosure *) data == closure;
}
/*
* CarbonMenu functions
*/
typedef struct
{
MenuRef menu;
} CarbonMenu;
static GQuark carbon_menu_quark = 0;
static CarbonMenu *
carbon_menu_new (void)
{
return g_slice_new0 (CarbonMenu);
}
static void
carbon_menu_free (CarbonMenu *menu)
{
g_slice_free (CarbonMenu, menu);
}
static CarbonMenu *
carbon_menu_get (GtkWidget *widget)
{
return g_object_get_qdata (G_OBJECT (widget), carbon_menu_quark);
}
static void
carbon_menu_connect (GtkWidget *menu,
MenuRef menuRef)
{
CarbonMenu *carbon_menu = carbon_menu_get (menu);
if (!carbon_menu)
{
carbon_menu = carbon_menu_new ();
g_object_set_qdata_full (G_OBJECT (menu), carbon_menu_quark,
carbon_menu,
(GDestroyNotify) carbon_menu_free);
}
carbon_menu->menu = menuRef;
}
/*
* CarbonMenuItem functions
*/
typedef struct
{
MenuRef menu;
MenuItemIndex index;
MenuRef submenu;
GClosure *accel_closure;
} CarbonMenuItem;
static GQuark carbon_menu_item_quark = 0;
static CarbonMenuItem *
carbon_menu_item_new (void)
{
return g_slice_new0 (CarbonMenuItem);
}
static void
carbon_menu_item_free (CarbonMenuItem *menu_item)
{
if (menu_item->accel_closure)
g_closure_unref (menu_item->accel_closure);
g_slice_free (CarbonMenuItem, menu_item);
}
static CarbonMenuItem *
carbon_menu_item_get (GtkWidget *widget)
{
return g_object_get_qdata (G_OBJECT (widget), carbon_menu_item_quark);
}
static void
carbon_menu_item_update_state (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
gboolean sensitive;
gboolean visible;
UInt32 set_attrs = 0;
UInt32 clear_attrs = 0;
g_object_get (widget,
"sensitive", &sensitive,
"visible", &visible,
NULL);
if (!sensitive)
set_attrs |= kMenuItemAttrDisabled;
else
clear_attrs |= kMenuItemAttrDisabled;
if (!visible)
set_attrs |= kMenuItemAttrHidden;
else
clear_attrs |= kMenuItemAttrHidden;
ChangeMenuItemAttributes (carbon_item->menu, carbon_item->index,
set_attrs, clear_attrs);
}
static void
carbon_menu_item_update_active (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
gboolean active;
g_object_get (widget,
"active", &active,
NULL);
CheckMenuItem (carbon_item->menu, carbon_item->index,
active);
}
static void
carbon_menu_item_update_submenu (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
GtkWidget *submenu;
submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
if (submenu)
{
const gchar *label_text;
CFStringRef cfstr = NULL;
label_text = get_menu_label_text (widget, NULL);
if (label_text)
cfstr = CFStringCreateWithCString (NULL, label_text,
kCFStringEncodingUTF8);
CreateNewMenu (0, 0, &carbon_item->submenu);
SetMenuTitleWithCFString (carbon_item->submenu, cfstr);
SetMenuItemHierarchicalMenu (carbon_item->menu, carbon_item->index,
carbon_item->submenu);
sync_menu_shell (GTK_MENU_SHELL (submenu), carbon_item->submenu, FALSE, FALSE);
if (cfstr)
CFRelease (cfstr);
}
else
{
SetMenuItemHierarchicalMenu (carbon_item->menu, carbon_item->index,
NULL);
carbon_item->submenu = NULL;
}
}
static void
carbon_menu_item_update_label (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
const gchar *label_text;
CFStringRef cfstr = NULL;
label_text = get_menu_label_text (widget, NULL);
if (label_text)
cfstr = CFStringCreateWithCString (NULL, label_text,
kCFStringEncodingUTF8);
SetMenuItemTextWithCFString (carbon_item->menu, carbon_item->index,
cfstr);
if (cfstr)
CFRelease (cfstr);
}
static void
carbon_menu_item_update_accelerator (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
GtkWidget *label;
get_menu_label_text (widget, &label);
if (GTK_IS_ACCEL_LABEL (label) &&
GTK_ACCEL_LABEL (label)->accel_closure)
{
GtkAccelKey *key;
key = gtk_accel_group_find (GTK_ACCEL_LABEL (label)->accel_group,
accel_find_func,
GTK_ACCEL_LABEL (label)->accel_closure);
if (key &&
key->accel_key &&
key->accel_flags & GTK_ACCEL_VISIBLE)
{
GdkDisplay *display = gtk_widget_get_display (widget);
GdkKeymap *keymap = gdk_keymap_get_for_display (display);
GdkKeymapKey *keys;
gint n_keys;
gint use_command;
if (gdk_keymap_get_entries_for_keyval (keymap, key->accel_key,
&keys, &n_keys))
{
UInt8 modifiers = 0; /* implies Command key */
SetMenuItemCommandKey (carbon_item->menu, carbon_item->index,
true, keys[0].keycode);
g_free (keys);
use_command = 0;
if (key->accel_mods)
{
if (key->accel_mods & GDK_SHIFT_MASK) {
modifiers |= kMenuShiftModifier;
}
if (key->accel_mods & (GDK_MOD1_MASK)) {
modifiers |= kMenuOptionModifier;
}
if (key->accel_mods & GDK_CONTROL_MASK) {
modifiers |= kMenuControlModifier;
}
if (key->accel_mods & GDK_MOD5_MASK) {
/* Mod5 is what ardour's binding file uses to mean "Command"
Nothing needs to be set in modifiers, but we need to notice
that there *is* an implicit modifier
*/
use_command = 1;
}
}
if (!use_command)
modifiers |= kMenuNoCommandModifier;
SetMenuItemModifiers (carbon_item->menu, carbon_item->index,
modifiers);
return;
}
}
}
/* otherwise, clear the menu shortcut */
SetMenuItemModifiers (carbon_item->menu, carbon_item->index,
kMenuNoModifiers | kMenuNoCommandModifier);
ChangeMenuItemAttributes (carbon_item->menu, carbon_item->index,
0, kMenuItemAttrUseVirtualKey);
SetMenuItemCommandKey (carbon_item->menu, carbon_item->index,
false, 0);
}
static void
carbon_menu_item_accel_changed (GtkAccelGroup *accel_group,
guint keyval,
GdkModifierType modifier,
GClosure *accel_closure,
GtkWidget *widget)
{
CarbonMenuItem *carbon_item = carbon_menu_item_get (widget);
GtkWidget *label;
get_menu_label_text (widget, &label);
if (GTK_IS_ACCEL_LABEL (label) &&
GTK_ACCEL_LABEL (label)->accel_closure == accel_closure)
carbon_menu_item_update_accelerator (carbon_item, widget);
}
static void
carbon_menu_item_update_accel_closure (CarbonMenuItem *carbon_item,
GtkWidget *widget)
{
GtkAccelGroup *group;
GtkWidget *label;
get_menu_label_text (widget, &label);
if (carbon_item->accel_closure)
{
group = gtk_accel_group_from_accel_closure (carbon_item->accel_closure);
g_signal_handlers_disconnect_by_func (group,
carbon_menu_item_accel_changed,
widget);
g_closure_unref (carbon_item->accel_closure);
carbon_item->accel_closure = NULL;
}
if (GTK_IS_ACCEL_LABEL (label))
carbon_item->accel_closure = GTK_ACCEL_LABEL (label)->accel_closure;
if (carbon_item->accel_closure)
{
g_closure_ref (carbon_item->accel_closure);
group = gtk_accel_group_from_accel_closure (carbon_item->accel_closure);
g_signal_connect_object (group, "accel-changed",
G_CALLBACK (carbon_menu_item_accel_changed),
widget, 0);
}
carbon_menu_item_update_accelerator (carbon_item, widget);
}
static void
carbon_menu_item_notify (GObject *object,
GParamSpec *pspec,
CarbonMenuItem *carbon_item)
{
if (!strcmp (pspec->name, "sensitive") ||
!strcmp (pspec->name, "visible"))
{
carbon_menu_item_update_state (carbon_item, GTK_WIDGET (object));
}
else if (!strcmp (pspec->name, "active"))
{
carbon_menu_item_update_active (carbon_item, GTK_WIDGET (object));
}
else if (!strcmp (pspec->name, "submenu"))
{
carbon_menu_item_update_submenu (carbon_item, GTK_WIDGET (object));
}
}
static void
carbon_menu_item_notify_label (GObject *object,
GParamSpec *pspec,
gpointer data)
{
CarbonMenuItem *carbon_item = carbon_menu_item_get (GTK_WIDGET (object));
if (!strcmp (pspec->name, "label"))
{
carbon_menu_item_update_label (carbon_item,
GTK_WIDGET (object));
}
else if (!strcmp (pspec->name, "accel-closure"))
{
carbon_menu_item_update_accel_closure (carbon_item,
GTK_WIDGET (object));
}
}
static CarbonMenuItem *
carbon_menu_item_connect (GtkWidget *menu_item,
GtkWidget *label,
MenuRef menu,
MenuItemIndex index)
{
CarbonMenuItem *carbon_item = carbon_menu_item_get (menu_item);
if (!carbon_item)
{
carbon_item = carbon_menu_item_new ();
g_object_set_qdata_full (G_OBJECT (menu_item), carbon_menu_item_quark,
carbon_item,
(GDestroyNotify) carbon_menu_item_free);
g_signal_connect (menu_item, "notify",
G_CALLBACK (carbon_menu_item_notify),
carbon_item);
if (label)
g_signal_connect_swapped (label, "notify::label",
G_CALLBACK (carbon_menu_item_notify_label),
menu_item);
}
carbon_item->menu = menu;
carbon_item->index = index;
return carbon_item;
}
/*
* carbon event handler
*/
static OSStatus
menu_event_handler_func (EventHandlerCallRef event_handler_call_ref,
EventRef event_ref,
void *data)
{
UInt32 event_class = GetEventClass (event_ref);
UInt32 event_kind = GetEventKind (event_ref);
MenuRef menu_ref;
switch (event_class)
{
case kEventClassCommand:
/* This is called when activating (is that the right GTK+ term?)
* a menu item.
*/
if (event_kind == kEventCommandProcess)
{
HICommand command;
OSStatus err;
/*g_printerr ("Menu: kEventClassCommand/kEventCommandProcess\n");*/
err = GetEventParameter (event_ref, kEventParamDirectObject,
typeHICommand, 0,
sizeof (command), 0, &command);
if (err == noErr)
{
GtkWidget *widget = NULL;
/* Get any GtkWidget associated with the item. */
err = GetMenuItemProperty (command.menu.menuRef,
command.menu.menuItemIndex,
IGE_QUARTZ_MENU_CREATOR,
IGE_QUARTZ_ITEM_WIDGET,
sizeof (widget), 0, &widget);
if (err == noErr && GTK_IS_WIDGET (widget))
{
gtk_menu_item_activate (GTK_MENU_ITEM (widget));
return noErr;
}
}
}
break;
case kEventClassMenu:
GetEventParameter (event_ref,
kEventParamDirectObject,
typeMenuRef,
NULL,
sizeof (menu_ref),
NULL,
&menu_ref);
switch (event_kind)
{
case kEventMenuTargetItem:
/* This is called when an item is selected (what is the
* GTK+ term? prelight?)
*/
/*g_printerr ("kEventClassMenu/kEventMenuTargetItem\n");*/
break;
case kEventMenuOpening:
/* Is it possible to dynamically build the menu here? We
* can at least set visibility/sensitivity.
*/
/*g_printerr ("kEventClassMenu/kEventMenuOpening\n");*/
break;
case kEventMenuClosed:
/*g_printerr ("kEventClassMenu/kEventMenuClosed\n");*/
break;
default:
break;
}
break;
default:
break;
}
return CallNextEventHandler (event_handler_call_ref, event_ref);
}
static void
setup_menu_event_handler (void)
{
EventHandlerUPP menu_event_handler_upp;
EventHandlerRef menu_event_handler_ref;
const EventTypeSpec menu_events[] = {
{ kEventClassCommand, kEventCommandProcess },
{ kEventClassMenu, kEventMenuTargetItem },
{ kEventClassMenu, kEventMenuOpening },
{ kEventClassMenu, kEventMenuClosed }
};
/* FIXME: We might have to install one per window? */
menu_event_handler_upp = NewEventHandlerUPP (menu_event_handler_func);
InstallEventHandler (GetApplicationEventTarget (), menu_event_handler_upp,
GetEventTypeCount (menu_events), menu_events, 0,
&menu_event_handler_ref);
#if 0
/* FIXME: Remove the handler with: */
RemoveEventHandler(menu_event_handler_ref);
DisposeEventHandlerUPP(menu_event_handler_upp);
#endif
}
static void
sync_menu_shell (GtkMenuShell *menu_shell,
MenuRef carbon_menu,
gboolean toplevel,
gboolean debug)
{
GList *children;
GList *l;
MenuItemIndex carbon_index = 1;
if (debug)
g_printerr ("%s: syncing shell %p\n", G_STRFUNC, menu_shell);
carbon_menu_connect (GTK_WIDGET (menu_shell), carbon_menu);
children = gtk_container_get_children (GTK_CONTAINER (menu_shell));
for (l = children; l; l = l->next)
{
GtkWidget *menu_item = l->data;
CarbonMenuItem *carbon_item;
if (GTK_IS_TEAROFF_MENU_ITEM (menu_item))
continue;
if (toplevel && g_object_get_data (G_OBJECT (menu_item),
"gtk-empty-menu-item"))
continue;
carbon_item = carbon_menu_item_get (menu_item);
if (debug)
g_printerr ("%s: carbon_item %d for menu_item %d (%s, %s)\n",
G_STRFUNC, carbon_item ? carbon_item->index : -1,
carbon_index, get_menu_label_text (menu_item, NULL),
g_type_name (G_TYPE_FROM_INSTANCE (menu_item)));
if (carbon_item && carbon_item->index != carbon_index)
{
if (debug)
g_printerr ("%s: -> not matching, deleting\n", G_STRFUNC);
DeleteMenuItem (carbon_item->menu, carbon_index);
carbon_item = NULL;
}
if (!carbon_item)
{
GtkWidget *label = NULL;
const gchar *label_text;
CFStringRef cfstr = NULL;
MenuItemAttributes attributes = 0;
if (debug)
g_printerr ("%s: -> creating new\n", G_STRFUNC);
label_text = get_menu_label_text (menu_item, &label);
if (label_text)
cfstr = CFStringCreateWithCString (NULL, label_text,
kCFStringEncodingUTF8);
if (GTK_IS_SEPARATOR_MENU_ITEM (menu_item))
attributes |= kMenuItemAttrSeparator;
if (!GTK_WIDGET_IS_SENSITIVE (menu_item))
attributes |= kMenuItemAttrDisabled;
if (!GTK_WIDGET_VISIBLE (menu_item))
attributes |= kMenuItemAttrHidden;
InsertMenuItemTextWithCFString (carbon_menu, cfstr,
carbon_index - 1,
attributes, 0);
SetMenuItemProperty (carbon_menu, carbon_index,
IGE_QUARTZ_MENU_CREATOR,
IGE_QUARTZ_ITEM_WIDGET,
sizeof (menu_item), &menu_item);
if (cfstr)
CFRelease (cfstr);
carbon_item = carbon_menu_item_connect (menu_item, label,
carbon_menu,
carbon_index);
if (GTK_IS_CHECK_MENU_ITEM (menu_item))
carbon_menu_item_update_active (carbon_item, menu_item);
carbon_menu_item_update_accel_closure (carbon_item, menu_item);
if (gtk_menu_item_get_submenu (GTK_MENU_ITEM (menu_item)))
carbon_menu_item_update_submenu (carbon_item, menu_item);
}
carbon_index++;
}
g_list_free (children);
}
static gulong emission_hook_id = 0;
static gboolean
parent_set_emission_hook (GSignalInvocationHint *ihint,
guint n_param_values,
const GValue *param_values,
gpointer data)
{
GtkWidget *instance = g_value_get_object (param_values);
if (GTK_IS_MENU_ITEM (instance))
{
GtkWidget *previous_parent = g_value_get_object (param_values + 1);
GtkWidget *menu_shell = NULL;
if (GTK_IS_MENU_SHELL (previous_parent))
{
menu_shell = previous_parent;
}
else if (GTK_IS_MENU_SHELL (instance->parent))
{
menu_shell = instance->parent;
}
if (menu_shell)
{
CarbonMenu *carbon_menu = carbon_menu_get (menu_shell);
if (carbon_menu)
{
#if 0
g_printerr ("%s: item %s %p (%s, %s)\n", G_STRFUNC,
previous_parent ? "removed from" : "added to",
menu_shell,
get_menu_label_text (instance, NULL),
g_type_name (G_TYPE_FROM_INSTANCE (instance)));
#endif
sync_menu_shell (GTK_MENU_SHELL (menu_shell),
carbon_menu->menu,
carbon_menu->menu == (MenuRef) data,
FALSE);
}
}
}
return TRUE;
}
static void
parent_set_emission_hook_remove (GtkWidget *widget,
gpointer data)
{
g_signal_remove_emission_hook (g_signal_lookup ("parent-set",
GTK_TYPE_WIDGET),
emission_hook_id);
}
/*
* public functions
*/
void
ige_mac_menu_set_menu_bar (GtkMenuShell *menu_shell)
{
MenuRef carbon_menubar;
g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
if (carbon_menu_quark == 0)
carbon_menu_quark = g_quark_from_static_string ("CarbonMenu");
if (carbon_menu_item_quark == 0)
carbon_menu_item_quark = g_quark_from_static_string ("CarbonMenuItem");
CreateNewMenu (0 /*id*/, 0 /*options*/, &carbon_menubar);
SetRootMenu (carbon_menubar);
setup_menu_event_handler ();
emission_hook_id =
g_signal_add_emission_hook (g_signal_lookup ("parent-set",
GTK_TYPE_WIDGET),
0,
parent_set_emission_hook,
carbon_menubar, NULL);
g_signal_connect (menu_shell, "destroy",
G_CALLBACK (parent_set_emission_hook_remove),
NULL);
sync_menu_shell (menu_shell, carbon_menubar, TRUE, FALSE);
}
void
ige_mac_menu_set_quit_menu_item (GtkMenuItem *menu_item)
{
MenuRef appmenu;
MenuItemIndex index;
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
if (GetIndMenuItemWithCommandID (NULL, kHICommandQuit, 1,
&appmenu, &index) == noErr)
{
SetMenuItemCommandID (appmenu, index, 0);
SetMenuItemProperty (appmenu, index,
IGE_QUARTZ_MENU_CREATOR,
IGE_QUARTZ_ITEM_WIDGET,
sizeof (menu_item), &menu_item);
gtk_widget_hide (GTK_WIDGET (menu_item));
}
}
struct _IgeMacMenuGroup
{
GList *items;
};
static GList *app_menu_groups = NULL;
IgeMacMenuGroup *
ige_mac_menu_add_app_menu_group (void)
{
IgeMacMenuGroup *group = g_slice_new0 (IgeMacMenuGroup);
app_menu_groups = g_list_append (app_menu_groups, group);
return group;
}
void
ige_mac_menu_add_app_menu_item (IgeMacMenuGroup *group,
GtkMenuItem *menu_item,
const gchar *label)
{
MenuRef appmenu;
GList *list;
gint index = 0;
g_return_if_fail (group != NULL);
g_return_if_fail (GTK_IS_MENU_ITEM (menu_item));
if (GetIndMenuItemWithCommandID (NULL, kHICommandHide, 1,
&appmenu, NULL) != noErr)
{
g_warning ("%s: retrieving app menu failed",
G_STRFUNC);
return;
}
for (list = app_menu_groups; list; list = g_list_next (list))
{
IgeMacMenuGroup *list_group = list->data;
index += g_list_length (list_group->items);
/* adjust index for the separator between groups, but not
* before the first group
*/
if (list_group->items && list->prev)
index++;
if (group == list_group)
{
CFStringRef cfstr;
/* add a separator before adding the first item, but not
* for the first group
*/
if (!group->items && list->prev)
{
InsertMenuItemTextWithCFString (appmenu, NULL, index,
kMenuItemAttrSeparator, 0);
index++;
}
if (!label)
label = get_menu_label_text (GTK_WIDGET (menu_item), NULL);
cfstr = CFStringCreateWithCString (NULL, label,
kCFStringEncodingUTF8);
InsertMenuItemTextWithCFString (appmenu, cfstr, index, 0, 0);
SetMenuItemProperty (appmenu, index + 1,
IGE_QUARTZ_MENU_CREATOR,
IGE_QUARTZ_ITEM_WIDGET,
sizeof (menu_item), &menu_item);
CFRelease (cfstr);
gtk_widget_hide (GTK_WIDGET (menu_item));
group->items = g_list_append (group->items, menu_item);
return;
}
}
if (!list)
g_warning ("%s: app menu group %p does not exist",
G_STRFUNC, group);
}
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