Update X11 UI backend to handle focus and window motion events (untested)

TODO.FACTOR.txt

@@ -10,8 +10,7 @@
 - code walker & exceptions -- test and debug problems
 - another i/o bug: on factorcode eventually all i/o times out
 - x11 title bars are funny
-- save window positions on x11
-- do top-level window focus on x11
+- quit fep
 - if the listener is running a command when the image is saved, it
   restores to an unresponsive gadget
 - track: don't allow negative dimensions

library/ui/x11/events.factor

@@ -6,7 +6,7 @@ namespaces prettyprint sequences strings threads ;
 
 GENERIC: expose-event ( event window -- )
 
-GENERIC: resize-event ( event window -- )
+GENERIC: configure-event ( event window -- )
 
 GENERIC: button-down-event ( event window -- )
 
@@ -20,6 +20,10 @@ GENERIC: key-down-event ( event window -- )
 
 GENERIC: key-up-event ( event window -- )
 
+GENERIC: focus-in-event ( event window -- )
+
+GENERIC: focus-out-event ( event window -- )
+
 GENERIC: client-event ( event window -- )
 
 : next-event ( -- event )
@@ -45,12 +49,14 @@ GENERIC: client-event ( event window -- )
 : handle-event ( event window -- )
     over XAnyEvent-type {
         { [ dup Expose = ] [ drop expose-event ] }
-        { [ dup ConfigureNotify = ] [ drop resize-event ] }
+        { [ dup ConfigureNotify = ] [ drop configure-event ] }
         { [ dup ButtonPress = ] [ drop button-down-event$ ] }
         { [ dup ButtonRelease = ] [ drop button-up-event$ ] }
         { [ dup MotionNotify = ] [ drop motion-event ] }
         { [ dup KeyPress = ] [ drop key-down-event ] }
         { [ dup KeyRelease = ] [ drop key-up-event ] }
+        { [ dup FocusIn = ] [ drop focus-in-event ] }
+        { [ dup FocusOut = ] [ drop focus-out-event ] }
         { [ dup ClientMessage = ] [ drop client-event ] }
         { [ t ] [ 3drop ] }
     } cond ;

library/ui/x11/ui.factor

@@ -12,11 +12,17 @@ strings x11 ;
 
 M: world expose-event ( event world -- ) nip relayout ;
 
-M: world resize-event ( event world -- )
-    >r
+: configured-loc ( event -- dim )
+    dup XConfigureEvent-x swap XConfigureEvent-y
+    0 3array ;
+
+: configured-dim ( event -- dim )
     dup XConfigureEvent-width swap XConfigureEvent-height 0
-    3array
-    r> set-gadget-dim ;
+    3array ;
+
+M: world configure-event ( event world -- )
+    over configured-loc over set-world-loc
+    swap configured-dim swap set-gadget-dim ;
 
 : button&loc ( event -- button# loc )
     dup XButtonEvent-button
@@ -94,6 +100,10 @@ M: world key-up-event ( event world -- )
         2drop
     ] if* ;
 
+M: world focus-in-event ( event world -- ) nip focus-world ;
+
+M: world focus-out-event ( event world -- ) nip unfocus-world ;
+
 : close-box? ( event -- ? )
     dup XClientMessageEvent-message_type "WM_PROTOCOLS" x-atom =
     swap XClientMessageEvent-data "WM_DELETE_WINDOW" x-atom =

library/ui/x11/windows.factor

@@ -18,7 +18,8 @@ USING: alien gadgets hashtables kernel math namespaces sequences ;
     KeyReleaseMask bitor
     ButtonPressMask	bitor
     ButtonReleaseMask bitor
-    PointerMotionMask bitor ;
+    PointerMotionMask bitor
+    FocusChangeMask bitor ;
 
 : window-attributes ( visinfo -- attributes )
     "XSetWindowAttributes" <c-object>