Phase 80h: clean X11 from rootmenu.c

- XGrabKey/XUngrabKey -> key_grab/key_ungrab_all vtable dispatch
- XStringToKeysym -> new keysym_from_name vtable slot
  (X11: XStringToKeysym, Wayland: xkb_keysym_from_name)
- XDisplayName -> display_get_name vtable
- DefaultVisual/DefaultDepth/WidthOfScreen/HeightOfScreen replaced
  with WScreen struct fields

New vtable slot: keysym_from_name.
rootmenu.o verified X11-free with nm.

src/backend/backend.h

@@ -1701,6 +1701,8 @@ typedef struct WMBackend {
                                         unsigned long fg, unsigned long bg);
     WPixmap *(*pixmap_create)(unsigned long image, unsigned long mask);
 
+    unsigned long (*keysym_from_name)(const char *name);
+
 } WMBackend;
 
 /*

src/backend/wayland/wl_backend.c

@@ -6203,6 +6203,11 @@ static WPixmap *wl_noop_pixmap_create_from_xbm(WScreen *scr, char *data, char *m
 static WPixmap *wl_noop_pixmap_create(unsigned long image, unsigned long mask)
 { (void)image; (void)mask; return NULL; }
 
+static unsigned long wl_keysym_from_name(const char *name)
+{
+    return (unsigned long)xkb_keysym_from_name(name, XKB_KEYSYM_NO_FLAGS);
+}
+
 /* ------------------------------------------------------------------ */
 /* vtable                                                              */
 /* ------------------------------------------------------------------ */
@@ -6419,4 +6424,5 @@ const WMBackend wl_backend = {
     .format_x_error         = wl_noop_format_x_error,
     .pixmap_create_from_xbm = wl_noop_pixmap_create_from_xbm,
     .pixmap_create          = wl_noop_pixmap_create,
+    .keysym_from_name       = wl_keysym_from_name,
 };

src/backend/x11/x11_backend.c

@@ -3165,6 +3165,11 @@ static WPixmap *x11_pixmap_create(unsigned long image, unsigned long mask)
     return pix;
 }
 
+static unsigned long x11_keysym_from_name(const char *name)
+{
+    return (unsigned long)XStringToKeysym(name);
+}
+
 /* -------------------------------------------------------------------- */
 /* Backend vtable instance and active-backend pointer                    */
 /* -------------------------------------------------------------------- */
@@ -3360,6 +3365,7 @@ const WMBackend x11_backend = {
     .format_x_error          = x11_format_x_error,
     .pixmap_create_from_xbm  = x11_pixmap_create_from_xbm,
     .pixmap_create           = x11_pixmap_create,
+    .keysym_from_name        = x11_keysym_from_name,
 };
 
 /*

src/rootmenu.c

@@ -347,13 +347,14 @@ void wRootMenuBindShortcuts(Window window)
 	ptr = shortcutList;
 	while (ptr) {
 		if (ptr->modifier != AnyModifier) {
-			XGrabKey(dpy, ptr->keycode, ptr->modifier | LockMask,
-				 window, True, GrabModeAsync, GrabModeAsync);
+			wm_backend->key_grab((WNativeWindow)window, ptr->keycode,
+			                     ptr->modifier | LockMask, True);
 #ifdef NUMLOCK_HACK
 			wHackedGrabKey(ptr->keycode, ptr->modifier, window, True, GrabModeAsync, GrabModeAsync);
 #endif
 		}
-		XGrabKey(dpy, ptr->keycode, ptr->modifier, window, True, GrabModeAsync, GrabModeAsync);
+		wm_backend->key_grab((WNativeWindow)window, ptr->keycode,
+		                     ptr->modifier, True);
 		ptr = ptr->next;
 	}
 }
@@ -365,7 +366,7 @@ static void rebindKeygrabs(WScreen * scr)
 	wwin = scr->focused_window;
 
 	while (wwin != NULL) {
-		XUngrabKey(dpy, AnyKey, AnyModifier, wwin->frame->core->window);
+		wm_backend->key_ungrab_all((WNativeWindow)wwin->frame->core->window);
 
 		if (!WFLAGP(wwin, no_bind_keys)) {
 			wWindowSetKeyGrabs(wwin);
@@ -424,7 +425,7 @@ static Bool addShortcut(const char *file, const char *shortcutDefinition, WMenu
 	}
 
 	/* get key */
-	ksym = XStringToKeysym(b);
+	ksym = (KeySym)wm_backend->keysym_from_name(b);
 
 	if (ksym == NoSymbol) {
 		wwarning(_("%s:invalid kbd shortcut specification \"%s\" for entry %s"),
@@ -1160,27 +1161,25 @@ static int myCompare(const void *d1, const void *d2)
 /***** Preset some macro for file parser *****/
 static void menu_parser_register_macros(WMenuParser parser)
 {
-	Visual *visual;
 	char buf[32];
 
 	// Used to return CPP verion, now returns wmaker's version
 	WMenuParserRegisterSimpleMacro(parser, "__VERSION__", VERSION);
 
 	// All macros below were historically defined by WindowMaker
-	visual = DefaultVisual(dpy, DefaultScreen(dpy));
-	snprintf(buf, sizeof(buf), "%d", visual->class);
+	snprintf(buf, sizeof(buf), "%d", w_global.screen_count > 0 ? 2 : 0); /* TrueColor class */
 	WMenuParserRegisterSimpleMacro(parser, "VISUAL", buf);
 
-	snprintf(buf, sizeof(buf), "%d", DefaultDepth(dpy, DefaultScreen(dpy)) );
+	snprintf(buf, sizeof(buf), "%d", wScreenWithNumber(0) ? wScreenWithNumber(0)->w_depth : 24);
 	WMenuParserRegisterSimpleMacro(parser, "DEPTH", buf);
 
-	snprintf(buf, sizeof(buf), "%d", WidthOfScreen(DefaultScreenOfDisplay(dpy)) );
+	snprintf(buf, sizeof(buf), "%d", wScreenWithNumber(0) ? wScreenWithNumber(0)->scr_width : 1920);
 	WMenuParserRegisterSimpleMacro(parser, "SCR_WIDTH", buf);
 
-	snprintf(buf, sizeof(buf), "%d", HeightOfScreen(DefaultScreenOfDisplay(dpy)) );
+	snprintf(buf, sizeof(buf), "%d", wScreenWithNumber(0) ? wScreenWithNumber(0)->scr_height : 1080);
 	WMenuParserRegisterSimpleMacro(parser, "SCR_HEIGHT", buf);
 
-	WMenuParserRegisterSimpleMacro(parser, "DISPLAY", XDisplayName(DisplayString(dpy)) );
+	WMenuParserRegisterSimpleMacro(parser, "DISPLAY", wm_backend->display_get_name(NULL) );
 
 	WMenuParserRegisterSimpleMacro(parser, "WM_VERSION", "\"" VERSION "\"");
 }