mutter/src/menu.c

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/* Metacity window menu */
/*
* Copyright (C) 2001 Havoc Pennington
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "menu.h"
#include "main.h"
#include <gdk/gdkx.h>
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#include <X11/Xatom.h>
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typedef struct _MenuItem MenuItem;
typedef struct _MenuData MenuData;
struct _MenuItem
{
MetaMessageWindowMenuOps op;
const char *stock_id;
const char *label;
};
struct _MenuData
{
GdkWindow *window;
MetaMessageWindowMenuOps op;
};
static void activate_cb (GtkWidget *menuitem, gpointer data);
static GtkWidget *menu = NULL;
static MenuItem menuitems[] = {
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{ META_MESSAGE_MENU_DELETE, GTK_STOCK_CLOSE, N_("_Close") },
{ META_MESSAGE_MENU_MINIMIZE, NULL, N_("_Minimize") },
{ META_MESSAGE_MENU_MAXIMIZE, NULL, N_("Ma_ximize") },
{ META_MESSAGE_MENU_SHADE, NULL, N_("_Shade") }
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};
static void
popup_position_func (GtkMenu *menu,
gint *x,
gint *y,
gboolean *push_in,
gpointer user_data)
{
GtkRequisition req;
GdkPoint *pos;
pos = user_data;
gtk_widget_size_request (GTK_WIDGET (menu), &req);
*x = pos->x;
*y = pos->y;
/* Ensure onscreen */
*x = CLAMP (*x, 0, MAX (0, gdk_screen_width () - req.width));
*y = CLAMP (*y, 0, MAX (0, gdk_screen_height () - req.height));
}
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static gint
get_num_desktops (void)
{
Atom type;
gint format;
gulong nitems;
gulong bytes_after;
gulong *num;
int result;
XGetWindowProperty (gdk_display, gdk_root_window,
gdk_atom_intern ("_NET_NUMBER_OF_DESKTOPS", FALSE),
0, G_MAXLONG,
False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (guchar **)&num);
if (type != XA_CARDINAL)
return 0;
result = *num;
XFree (num);
return result;
}
static gulong
get_current_desktop (GdkWindow *window)
{
Atom type;
gint format;
gulong nitems;
gulong bytes_after;
gulong *num;
gulong result;
int err;
gdk_error_trap_push ();
type = None;
XGetWindowProperty (gdk_display, GDK_WINDOW_XID (window),
gdk_atom_intern ("_NET_WM_DESKTOP", FALSE),
0, G_MAXLONG,
False, XA_CARDINAL, &type, &format, &nitems,
&bytes_after, (guchar **)&num);
err = gdk_error_trap_pop ();
if (err != Success)
meta_ui_warning ("Error %d getting _NET_WM_DESKTOP\n", err);
if (type != XA_CARDINAL)
{
meta_ui_warning ("_NET_WM_DESKTOP has wrong type %s\n", gdk_atom_name (type));
return -1;
}
result = *num;
XFree (num);
return result;
}
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void
meta_window_menu_show (gulong xwindow,
int root_x, int root_y,
int button,
MetaMessageWindowMenuOps ops,
MetaMessageWindowMenuOps insensitive,
guint32 timestamp)
{
int i;
GdkWindow *window;
GdkPoint *pt;
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int n_workspaces;
int current_workspace;
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if (menu)
gtk_widget_destroy (menu);
window = gdk_xid_table_lookup (xwindow);
if (window)
g_object_ref (G_OBJECT (window));
else
window = gdk_window_foreign_new (xwindow);
/* X error creating the foreign window means NULL here */
if (window == NULL)
return;
menu = gtk_menu_new ();
i = 0;
while (i < G_N_ELEMENTS (menuitems))
{
if (ops & menuitems[i].op)
{
GtkWidget *mi;
MenuData *md;
if (menuitems[i].stock_id)
{
GtkWidget *image;
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mi = gtk_image_menu_item_new_with_mnemonic (menuitems[i].label);
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image = gtk_image_new_from_stock (menuitems[i].stock_id,
GTK_ICON_SIZE_MENU);
gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (mi),
image);
gtk_widget_show (image);
}
else
{
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mi = gtk_menu_item_new_with_mnemonic (menuitems[i].label);
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}
if (insensitive & menuitems[i].op)
gtk_widget_set_sensitive (mi, FALSE);
md = g_new (MenuData, 1);
md->window = window;
md->op = menuitems[i].op;
gtk_signal_connect (GTK_OBJECT (mi),
"activate",
GTK_SIGNAL_FUNC (activate_cb),
md);
gtk_menu_shell_append (GTK_MENU_SHELL (menu),
mi);
gtk_widget_show (mi);
}
++i;
}
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if (ops & META_MESSAGE_MENU_WORKSPACES)
{
n_workspaces = get_num_desktops ();
current_workspace = get_current_desktop (window);
meta_ui_warning ("Creating %d workspace menu current %d\n",
n_workspaces, current_workspace);
if (n_workspaces > 0 && current_workspace >= 0)
{
i = 0;
while (i < n_workspaces)
{
char *label;
GtkWidget *mi;
MenuData *md;
label = g_strdup_printf (_("Move to workspace _%d\n"),
i + 1);
mi = gtk_menu_item_new_with_mnemonic (label);
g_free (label);
if (current_workspace == i ||
insensitive & META_MESSAGE_MENU_WORKSPACES)
gtk_widget_set_sensitive (mi, FALSE);
md = g_new (MenuData, 1);
md->window = window;
md->op = META_MESSAGE_MENU_WORKSPACES;
g_object_set_data (G_OBJECT (mi),
"workspace",
GINT_TO_POINTER (i));
gtk_signal_connect (GTK_OBJECT (mi),
"activate",
GTK_SIGNAL_FUNC (activate_cb),
md);
gtk_menu_shell_append (GTK_MENU_SHELL (menu),
mi);
gtk_widget_show (mi);
++i;
}
}
}
else
meta_ui_warning ("not creating workspace menu\n");
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gtk_signal_connect (GTK_OBJECT (menu),
"destroy",
GTK_SIGNAL_FUNC (gtk_widget_destroyed),
&menu);
pt = g_new (GdkPoint, 1);
g_object_set_data_full (G_OBJECT (menu),
"destroy-point",
pt,
g_free);
pt->x = root_x;
pt->y = root_y;
gtk_menu_popup (GTK_MENU (menu),
NULL, NULL,
popup_position_func, pt,
button,
timestamp);
if (!GTK_MENU_SHELL (menu)->have_xgrab)
meta_ui_warning ("GtkMenu failed to grab the pointer\n");
}
void
meta_window_menu_hide (void)
{
if (menu)
gtk_widget_destroy (menu);
}
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static void
close_window (GdkWindow *window)
{
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = GDK_WINDOW_XID (window);
ev.message_type = gdk_atom_intern ("_NET_CLOSE_WINDOW", FALSE);
ev.format = 32;
ev.data.l[0] = 0;
ev.data.l[1] = 0;
gdk_error_trap_push ();
XSendEvent (gdk_display,
gdk_root_window, False,
SubstructureNotifyMask | SubstructureRedirectMask,
(XEvent*) &ev);
gdk_flush ();
gdk_error_trap_pop ();
}
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static void
wmspec_change_state (gboolean add,
GdkWindow *window,
GdkAtom state1,
GdkAtom state2)
{
XEvent xev;
Atom op;
if (add)
op = gdk_atom_intern ("_NET_WM_STATE_ADD", FALSE);
else
op = gdk_atom_intern ("_NET_WM_STATE_REMOVE", FALSE);
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.display = gdk_display;
xev.xclient.window = GDK_WINDOW_XID (window);
xev.xclient.message_type = gdk_atom_intern ("_NET_WM_STATE", FALSE);
xev.xclient.format = 32;
xev.xclient.data.l[0] = op;
xev.xclient.data.l[1] = state1;
xev.xclient.data.l[2] = state2;
XSendEvent (gdk_display, gdk_root_window, False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
}
static void
wmspec_change_desktop (GdkWindow *window,
gint desktop)
{
XEvent xev;
xev.xclient.type = ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event = True;
xev.xclient.display = gdk_display;
xev.xclient.window = GDK_WINDOW_XID (window);
xev.xclient.message_type = gdk_atom_intern ("_NET_WM_DESKTOP", FALSE);
xev.xclient.format = 32;
xev.xclient.data.l[0] = desktop;
xev.xclient.data.l[1] = 0;
xev.xclient.data.l[2] = 0;
XSendEvent (gdk_display, gdk_root_window, False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
}
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static void
activate_cb (GtkWidget *menuitem, gpointer data)
{
MenuData *md;
md = data;
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switch (md->op)
{
case META_MESSAGE_MENU_DELETE:
close_window (md->window);
break;
case META_MESSAGE_MENU_MINIMIZE:
break;
case META_MESSAGE_MENU_MAXIMIZE:
gdk_error_trap_push ();
gdk_window_maximize (md->window);
gdk_flush ();
gdk_error_trap_pop ();
break;
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case META_MESSAGE_MENU_SHADE:
wmspec_change_state (TRUE, md->window,
gdk_atom_intern ("_NET_WM_STATE_SHADED", FALSE),
0);
break;
case META_MESSAGE_MENU_WORKSPACES:
{
int workspace;
workspace = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menuitem),
"workspace"));
wmspec_change_desktop (md->window, workspace);
}
break;
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default:
meta_ui_warning (G_STRLOC": Unknown window op\n");
break;
}
if (menu)
gtk_widget_destroy (menu);
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g_object_unref (G_OBJECT (md->window));
g_free (md);
}