#include #include #include #include #include #include #include "wm-common.h" typedef struct _WMCallbackData { GFunc func; gpointer data; } WMCallbackData; /* Our WM Window */ static Window wm_window = None; static char * wm_common_get_window_manager_property (Atom atom) { Atom utf8_string, type; int result; char *retval; int format; gulong nitems; gulong bytes_after; gchar *val; if (wm_window == None) return NULL; utf8_string = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "UTF8_STRING", False); gdk_error_trap_push (); val = NULL; result = XGetWindowProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), wm_window, atom, 0, G_MAXLONG, False, utf8_string, &type, &format, &nitems, &bytes_after, (guchar **) &val); if (gdk_error_trap_pop () || result != Success || type != utf8_string || format != 8 || nitems == 0 || !g_utf8_validate (val, nitems, NULL)) { retval = NULL; } else { retval = g_strndup (val, nitems); } if (val) XFree (val); return retval; } char* wm_common_get_current_window_manager (void) { Atom atom = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_WM_NAME", False); char *result; result = wm_common_get_window_manager_property (atom); if (result) return result; else return g_strdup (WM_COMMON_UNKNOWN); } char** wm_common_get_current_keybindings (void) { Atom keybindings_atom = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_GNOME_WM_KEYBINDINGS", False); char *keybindings = wm_common_get_window_manager_property (keybindings_atom); char **results; if (keybindings) { char **p; results = g_strsplit(keybindings, ",", -1); for (p = results; *p; p++) g_strstrip (*p); g_free (keybindings); } else { Atom wm_atom = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_WM_NAME", False); char *wm_name = wm_common_get_window_manager_property (wm_atom); char *to_copy[] = { NULL, NULL }; to_copy[0] = wm_name ? wm_name : WM_COMMON_UNKNOWN; results = g_strdupv (to_copy); g_free (wm_name); } return results; } static void update_wm_window (void) { Window *xwindow; Atom type; gint format; gulong nitems; gulong bytes_after; XGetWindowProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), GDK_ROOT_WINDOW (), XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_SUPPORTING_WM_CHECK", False), 0, G_MAXLONG, False, XA_WINDOW, &type, &format, &nitems, &bytes_after, (guchar **) &xwindow); if (type != XA_WINDOW) { wm_window = None; return; } gdk_error_trap_push (); XSelectInput (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), *xwindow, StructureNotifyMask | PropertyChangeMask); XSync (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), False); if (gdk_error_trap_pop ()) { XFree (xwindow); wm_window = None; return; } wm_window = *xwindow; XFree (xwindow); } static GdkFilterReturn wm_window_event_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) { WMCallbackData *ncb_data = (WMCallbackData*) data; XEvent *xevent = (XEvent *)xev; if ((xevent->type == DestroyNotify && wm_window != None && xevent->xany.window == wm_window) || (xevent->type == PropertyNotify && xevent->xany.window == GDK_ROOT_WINDOW () && xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_SUPPORTING_WM_CHECK", False))) || (xevent->type == PropertyNotify && wm_window != None && xevent->xany.window == wm_window && xevent->xproperty.atom == (XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "_NET_WM_NAME", False)))) { update_wm_window (); (* ncb_data->func) ((gpointer)wm_common_get_current_window_manager(), ncb_data->data); } return GDK_FILTER_CONTINUE; } void wm_common_register_window_manager_change (GFunc func, gpointer data) { WMCallbackData *ncb_data; ncb_data = g_new0 (WMCallbackData, 1); ncb_data->func = func; ncb_data->data = data; gdk_window_add_filter (NULL, wm_window_event_filter, ncb_data); update_wm_window (); XSelectInput (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), GDK_ROOT_WINDOW (), PropertyChangeMask); XSync (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), False); }