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Manually update toplevel_under_pointer when a grab changes to owner_events

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When we ungrab the pointer we don't get enter events for the window the
pointer is in at the time of the ungrab, so we manually query for the
window the pointer is in. The same thing actually happens on re-grab if
the previous grab was !owner_events (meaning we don't get crossing events
for windows other than the grab) but the new grab is owner_events (and
thus non-grab windows need to get crossing events).

This factors out some common code and enables it also for the re-grab
to owner_events case.
This commit is contained in:
Alexander Larsson
2009-07-10 17:30:42 +02:00
parent 0ef74c936f
commit ccb09d1c6f
1 changed files with 84 additions and 49 deletions
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133
gdk/gdkdisplay.c
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@@ -903,6 +903,42 @@ synthesize_crossing_events (GdkDisplay *display,
}
}
static GdkWindow *
get_current_toplevel (GdkDisplay *display,
int *x_out, int *y_out,
GdkModifierType *state_out)
{
GdkWindow *pointer_window;
GdkWindowObject *w;
int x, y;
GdkModifierType state;
pointer_window = _gdk_windowing_window_at_pointer (display, &x, &y, &state);
if (pointer_window != NULL &&
(GDK_WINDOW_DESTROYED (pointer_window) ||
GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_ROOT ||
GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_FOREIGN))
pointer_window = NULL;
w = (GdkWindowObject *)pointer_window;
if (w)
{
/* Convert to toplevel */
while (w->parent != NULL &&
w->parent->window_type != GDK_WINDOW_ROOT)
{
x += w->x;
y += w->y;
w = w->parent;
}
}
*x_out = x;
*y_out = y;
*state_out = state;
return (GdkWindow *)w;
}
static void
switch_to_pointer_grab (GdkDisplay *display,
GdkPointerGrabInfo *grab,
@@ -910,8 +946,7 @@ switch_to_pointer_grab (GdkDisplay *display,
guint32 time,
gulong serial)
{
GdkWindow *src_window, *pointer_window;
GdkWindowObject *w;
GdkWindow *src_window, *pointer_window, *new_toplevel;
GList *old_grabs;
GdkModifierType state;
int x, y;
@@ -944,66 +979,66 @@ switch_to_pointer_grab (GdkDisplay *display,
src_window, grab->window,
GDK_CROSSING_GRAB, time, serial);
}
/* !owner_event Grabbing a window that we're not inside, current status is
now NULL (i.e. outside grabbed window) */
if (!grab->owner_events && display->pointer_info.window_under_pointer != grab->window)
_gdk_display_set_window_under_pointer (display, NULL);
}
grab->activated = TRUE;
}
else if (last_grab)
if (last_grab)
{
pointer_window = _gdk_windowing_window_at_pointer (display, &x, &y, &state);
if (pointer_window != NULL &&
(GDK_WINDOW_DESTROYED (pointer_window) ||
GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_ROOT ||
GDK_WINDOW_TYPE (pointer_window) == GDK_WINDOW_FOREIGN))
pointer_window = NULL;
/* We force checked what window we're in, so we need to
* update the toplevel_under_pointer info, as that won't get told of
* this change.
*/
if (display->pointer_info.toplevel_under_pointer)
g_object_unref (display->pointer_info.toplevel_under_pointer);
display->pointer_info.toplevel_under_pointer = NULL;
if (pointer_window)
new_toplevel = NULL;
if (grab == NULL /* ungrab */ ||
(!last_grab->owner_events && grab->owner_events) /* switched to owner_events */ )
{
/* Convert to toplevel */
w = (GdkWindowObject *)pointer_window;
while (/*w->parent != NULL && */
w->parent->window_type != GDK_WINDOW_ROOT)
/* We force check what window we're in, and update the toplevel_under_pointer info,
* as that won't get told of this change with toplevel enter events.
*/
if (display->pointer_info.toplevel_under_pointer)
g_object_unref (display->pointer_info.toplevel_under_pointer);
display->pointer_info.toplevel_under_pointer = NULL;
new_toplevel = get_current_toplevel (display, &x, &y, &state);
if (new_toplevel)
{
x += w->x;
y += w->y;
w = w->parent;
/* w is now toplevel and x,y in toplevel coords */
display->pointer_info.toplevel_under_pointer = g_object_ref (new_toplevel);
display->pointer_info.toplevel_x = x;
display->pointer_info.toplevel_y = y;
display->pointer_info.state = state;
}
/* w is now toplevel and x,y in toplevel coords */
display->pointer_info.toplevel_under_pointer = g_object_ref (w);
/* Find (possibly virtual) child window */
pointer_window =
_gdk_window_find_descendant_at ((GdkWindow *)w,
x, y,
NULL, NULL);
}
if (pointer_window != last_grab->window)
synthesize_crossing_events (display,
last_grab->window, pointer_window,
GDK_CROSSING_UNGRAB, time, serial);
/* We're now ungrabbed, update the window_under_pointer */
_gdk_display_set_window_under_pointer (display, pointer_window);
if (last_grab->implicit_ungrab)
generate_grab_broken_event (last_grab->window,
FALSE, TRUE,
NULL);
if (grab == NULL) /* Ungrabbed, send events */
{
pointer_window = NULL;
if (new_toplevel)
{
/* Find (possibly virtual) child window */
pointer_window =
_gdk_window_find_descendant_at (new_toplevel,
x, y,
NULL, NULL);
}
if (pointer_window != last_grab->window)
synthesize_crossing_events (display,
last_grab->window, pointer_window,
GDK_CROSSING_UNGRAB, time, serial);
/* We're now ungrabbed, update the window_under_pointer */
_gdk_display_set_window_under_pointer (display, pointer_window);
if (last_grab->implicit_ungrab)
generate_grab_broken_event (last_grab->window,
FALSE, TRUE,
NULL);
}
}
display->pointer_grabs = old_grabs;