[client] Add client_redraw (FS#170)

awesome.1.txt

@@ -125,6 +125,8 @@ DEFAULTS KEY BINDINGS
     Zoom client.
 *Mod4 \+ Control \+ space*::
     Set client floating.
+*Mod4 \+ s*::
+    Redraw the client.
 *Mod4 \+ Shift \+ c*::
     Kill client.
 *Mod4 \+ Shift \+ q*::

awesomerc.in

@@ -129,6 +129,7 @@ keys
     key { modkey = {"Mod4", "Control"} key = "space" command = "client_setfloating" }
     key { modkey = {"Mod4"} key = "s" command = "client_togglescratch" }
     key { modkey = {"Mod4", "Control"} key = "s" command = "client_setscratch" }
+    key { modkey = {"Mod4"} key = "r" command = "client_redraw" }
     key { modkey = {"Mod4", "Shift"} key = "c" command = "client_kill" }
     key { modkey = {"Mod4", "Shift"} key = "q" command = "quit" }
     key { modkey = {"Mod4", "Control"} key = "r" command = "restart" }

client.c

@@ -1244,6 +1244,19 @@ uicb_client_setscratch(int screen, char *arg __attribute__ ((unused)))
     globalconf.screens[screen].need_arrange = true;
 }
 
+void
+uicb_client_redraw(int screen __attribute__ ((unused)),
+                   char *arg __attribute__ ((unused)))
+{
+    if(!globalconf.focus->client)
+        return;
+
+    /* Use unmap/map ATM but it would be better to used SendEvent,
+     * however the client doesn't seem to handle it... */
+    xcb_unmap_window(globalconf.connection, globalconf.focus->client->win);
+    xcb_map_window(globalconf.connection, globalconf.focus->client->win);
+}
+
 /** Toggle the scratch client's visibility.
  * \param screen screen number
  * \param arg unused argument

client.h

@@ -54,6 +54,7 @@ uicb_t uicb_client_focus;
 uicb_t uicb_client_setfloating;
 uicb_t uicb_client_togglescratch;
 uicb_t uicb_client_setscratch;
+uicb_t uicb_client_redraw;
 
 DO_SLIST(client_t, client, p_delete)
 

uicb.c

@@ -58,6 +58,7 @@ const name_func_link_t UicbList[] =
     { "client_setfloating", uicb_client_setfloating },
     { "client_togglescratch", uicb_client_togglescratch },
     { "client_setscratch", uicb_client_setscratch },
+    { "client_redraw", uicb_client_redraw },
     /* focus.h */
     { "focus_history", uicb_focus_history },
     { "focus_client_byname", uicb_focus_client_byname },