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compositor: Avoid sending event for invalid point
author
Rob Bradford
<rob@linux.intel.com>
Wed, 5 Dec 2012 18:47:05 +0000
(18:47 +0000)
committer
Kristian Høgsberg
<krh@bitplanet.net>
Fri, 7 Dec 2012 03:31:50 +0000
(22:31 -0500)
Avoid sending a touch down event using uninitialised surface x/y co-ordinates.
Instead present a log message about this unexpected case.
src/compositor.c
patch
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diff --git
a/src/compositor.c
b/src/compositor.c
index
d62a740
..
d6e833f
100644
(file)
--- a/
src/compositor.c
+++ b/
src/compositor.c
@@
-2043,6
+2043,13
@@
notify_touch(struct weston_seat *seat, uint32_t time, int touch_id,
} else if (touch->focus) {
es = (struct weston_surface *) touch->focus;
weston_surface_from_global_fixed(es, x, y, &sx, &sy);
+ } else {
+ /* Unexpected condition: We have non-initial touch but
+ * there is no focused surface.
+ */
+ weston_log("touch event received with %d points down"
+ "but no surface focused\n", seat->num_tp);
+ return;
}
grab->interface->down(grab, time, touch_id, sx, sy);