Attilio Fiandrotti wrote:
> Hi
>
> i recently noticed the directfb backend delivers, in some cases,
> different gdk events from the x11 backend.
<snip/>
I did some tests with a single toplevel gdkwindow and this is what i got
when moving the cursor in and out of the window: the directfb backends
produces wrong GDK_LEAVE_NOTIFY events.
Here i'm not considering the case of the cursor moving between a
toplevel gdkwindow and childs, though problems are known to exist.
I believe the problem is in that
gdk_directfb_window_send_crossing_events() function, see the below log.
I hope i'll be able to work it out, but a help here would be really
welcomed (Sven ?)
Attilio
Step 1: Cursor enters gdkwindow, DWET_ENTER from dfb side
gdk_event_translate():
GdkWindow 134686896 receives DWET_ENTER (x=152, y=299), sending
GDK_CROSSING_NORMAL to GdkWindow 134686896
gdk_directfb_window_send_crossing_events ():
sending GDK_ENTER_NOTIFY to GdkWindow 134686896
Test application: gdkwindow 134686896 sends event GDK_ENTER_NOTIFY
->The gdkwindow emits GDK_ENTER_NOTIFY as expected
Step 2: Cursor moves inside the gdkwindow, DWET_MOTION from dfb side
gdk_event_translate():
GdkWindow 134686896 receives DWET_MOTION (x=150, y=299),
sending GDK_CROSSING_NORMAL to GdkWindow 134686720
gdk_directfb_window_send_crossing_events ():
sending GDK_LEAVE_NOTIFY to 134686896
Test application: gdkwindow 134686896 sends event GDK_LEAVE_NOTIFY
->The gdkwindow emits GDK_LEAVE_NOTIFY: it should not as the cursor is
still inside the gdkwindow
Step 3: Cursor moves out of the gdkwindow, DWET_LEAVE from dfb side
gdk_event_translate():
GdkWindow 134686896 receives DWET_LEAVE (x=148, y=301), sending
GDK_CROSSING_NORMAL to root GdkWindow
->Now the cursor is really outside of the window, but the gdkwindow did
not emit the GDK_LEAVE_NOTIFY signal
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