[qw] Get chat info flag mostly working again

Currently does only chat (not afk), but the whole thing needs work
anyway (billboarded world-space canvas or similar).

qw/include/cl_input.h

@@ -32,6 +32,8 @@
 
 #include "qw/protocol.h"
 
+void CL_OnFocusChange (void (*func) (int game));
+
 void CL_Input_Activate (void);
 void CL_Input_Init (void);
 void CL_Input_Init_Cvars (void);

qw/source/cl_chat.c

@@ -46,6 +46,7 @@
 
 #include "qw/include/client.h"
 #include "qw/include/cl_chat.h"
+#include "qw/include/cl_input.h"
 
 llist_t *ignore_list, *dead_ignore_list;
 
@@ -237,7 +238,7 @@ CL_Chat_Flush_Ignores (void)
 {
 	llist_flush (ignore_list);
 }
-#if 0
+
 static void
 CL_ChatInfo (int val)
 {
@@ -250,25 +251,12 @@ CL_ChatInfo (int val)
 }
 
 static void
-cl_chat_keydest (keydest_t keydest, void *data)
+cl_chat_on_focus_change (int game)
 {
-	switch (keydest) {
+	//FIXME afk mode
-		case key_game:
+	CL_ChatInfo (!!game);
-		case key_demo:
-			CL_ChatInfo (0);
-			break;
-		case key_message:
-			CL_ChatInfo (1);
-			break;
-		case key_console:
-		case key_menu:
-		case key_unfocused:
-		case key_last:			// should not happen
-			CL_ChatInfo (2);
-			break;
 }
-}
+
-#endif
 
 void
 CL_Chat_Init (void)
@@ -278,5 +266,5 @@ CL_Chat_Init (void)
 
 	Cmd_AddCommand ("ignore", CL_Ignore_f, "Ignores chat and name-change messages from a user.");
 	Cmd_AddCommand ("unignore", CL_Unignore_f, "Removes a previously ignored user from the ignore list.");
-	//Key_KeydestCallback (cl_chat_keydest, 0);
+	CL_OnFocusChange (cl_chat_on_focus_change);
 }

qw/source/cl_input.c

@@ -41,6 +41,7 @@
 #include "QF/cvar.h"
 #include "QF/input.h"
 #include "QF/keys.h"
+#include "QF/listener.h"
 #include "QF/msg.h"
 #include "QF/sys.h"
 #include "QF/teamplay.h"
@@ -66,6 +67,8 @@
 int         cl_game_context;
 int         cl_demo_context;
 static int  cl_event_id;
+static struct LISTENER_SET_TYPE(int) cl_on_focus_change
+	= LISTENER_SET_STATIC_INIT(4);
 
 cvar_t     *cl_nodelta;
 cvar_t     *cl_maxnetfps;
@@ -562,16 +565,50 @@ CL_SendCmd (void)
 }
 
 static int
-cl_event_handler (const IE_event_t *ie_event, void *unused)
+cl_key_event (const IE_event_t *ie_event)
 {
-	if (ie_event->type == ie_key) {
 	if (ie_event->key.code == QFK_ESCAPE) {
 		Con_SetState (con_menu);
 		return 1;
 	}
+	return 0;
 }
+
+static void
+cl_on_focus_change_redirect (void *_func, const int *game)
+{
+	void (*func) (int game) = _func;
+	func (*game);
+}
+
+void
+CL_OnFocusChange (void (*func) (int game))
+{
+	LISTENER_ADD (&cl_on_focus_change, cl_on_focus_change_redirect, func);
+}
+
+static int
+cl_focus_event (const IE_event_t *ie_event)
+{
+	int         game = ie_event->type == ie_gain_focus;
+	LISTENER_INVOKE (&cl_on_focus_change, &game);
+	return 1;
+}
+
+static int
+cl_event_handler (const IE_event_t *ie_event, void *unused)
+{
+	static int (*handlers[ie_event_count]) (const IE_event_t *ie_event) = {
+		[ie_key] = cl_key_event,
+		[ie_gain_focus] = cl_focus_event,
+		[ie_lose_focus] = cl_focus_event,
+	};
+	if (ie_event->type < 0 || ie_event->type >= ie_event_count
+		|| !handlers[ie_event->type]) {
 		return IN_Binding_HandleEvent (ie_event);
 	}
+	return handlers[ie_event->type] (ie_event);
+}
 
 void
 CL_Input_Init (void)