[DMenu] make rofi obey the dmenu -w flag.

- This is a dirty hack that needs to be done better in next release.

source/dialogs/dmenu.c

@@ -656,6 +656,7 @@ int dmenu_switcher_dialog ( void )
     MenuFlags            menu_flags = MENU_NORMAL;
     DmenuModePrivateData *pd        = (DmenuModePrivateData *) dmenu_mode.private_data;
     int                  async      = TRUE;
+
     // For now these only work in sync mode.
     if ( find_arg ( "-sync" ) >= 0 || find_arg ( "-dump" ) >= 0 || find_arg ( "-select" ) >= 0
          || find_arg ( "-no-custom" ) >= 0 || find_arg ( "-only-match" ) >= 0 || config.auto_select ||
@@ -757,4 +758,5 @@ void print_dmenu_options ( void )
     print_help_msg ( "-input", "[filename]", "Read input from file instead from standard input.", NULL, is_term );
     print_help_msg ( "-sync", "", "Force dmenu to first read all input data, then show dialog.", NULL, is_term );
     print_help_msg ( "-async-pre-read", "[number]", "Read several entries blocking before switching to async mode", "25", is_term );
+    print_help_msg ( "-w", "windowid", "Position over window with X11 windowid.", NULL, is_term );
 }

source/rofi.c

@@ -855,6 +855,8 @@ int main ( int argc, char *argv[] )
 
     parse_keys_abe ( bindings );
 
+    /** dirty hack for dmenu compatibility */
+    char *windowid = NULL;
     if ( !dmenu_mode ) {
         // setup_modi
         if ( setup_modi () ) {
@@ -863,7 +865,13 @@ int main ( int argc, char *argv[] )
         }
         TICK_N ( "Setup Modi" );
     }
-
+    else {
+        // Hack for dmenu compatibility.
+        if ( find_arg_str ( "-w", &windowid ) == TRUE ) {
+            config.monitor = g_strdup_printf ( "wid:%s", windowid );
+            windowid       = config.monitor;
+        }
+    }
     if ( rofi_theme_is_empty ( ) ) {
         if ( rofi_theme_parse_string ( default_theme ) ) {
             g_warning ( "Failed to parse default theme. Giving up.." );
@@ -951,5 +959,8 @@ int main ( int argc, char *argv[] )
     g_main_loop_run ( main_loop );
     teardown ( pfd );
     cleanup ();
+
+    /* dirty hack */
+    g_free ( windowid );
     return return_code;
 }