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Handle enter/leave events with detail=Inferior correctly 

There is a client window C. Around this window, awesome adds a frame window F.
When the pointer is inside of C and then moves inside of F, we get a LeaveNotify
with detail=Inferior, but from our point of view, the pointer is still inside of
C, because F is contained in C.

Similarly, if the pointer is in F and moves to C, we get an EnterNotify with
detail=Inferior that we should ignore. However, for an EnterNotify the pointer
can now be inside of a titlebar, so this case has to be handled now.

The above explains the enter/leave behavior for clients. Let's now think about
titlebars: When the pointer moves from C to F, it cannot be in any titlebar any
more, so we must generate a leave event on that titlebar. Similar when the
pointer moves from F to C, but in this case we also have to figure out which
titlebar now contains the pointer.

This patch makes the code handle these events with detail=Inferior correctly.

Closes https://github.com/awesomeWM/awesome/pull/461.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2015-09-17 17:03:36 +02:00
parent a638310e89
commit de8fd4ffd4
1 changed files with 10 additions and 2 deletions
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10
event.c
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@ -491,7 +491,10 @@ event_handle_leavenotify(xcb_leave_notify_event_t *ev)
if(ev->mode != XCB_NOTIFY_MODE_NORMAL)
return;
if((c = client_getbyframewin(ev->event)))
/* Ignore leave with detail inferior (we were left for a window contained in
* our window, so technically the pointer is still inside of this window).
*/
if(ev->detail != XCB_NOTIFY_DETAIL_INFERIOR && (c = client_getbyframewin(ev->event)))
{
luaA_object_push(globalconf.L, c);
luaA_object_emit_signal(globalconf.L, -1, "mouse::leave", 0);
@ -527,7 +530,12 @@ event_handle_enternotify(xcb_enter_notify_event_t *ev)
if((c = client_getbyframewin(ev->event)))
{
luaA_object_push(globalconf.L, c);
/* Ignore enter with detail inferior: The pointer was previously inside
* of a child window, so technically this isn't a 'real' enter.
*/
if (ev->detail != XCB_NOTIFY_DETAIL_INFERIOR)
luaA_object_emit_signal(globalconf.L, -1, "mouse::enter", 0);
drawable_t *d = client_get_drawable(c, ev->event_x, ev->event_y);
if (d)
{