commit a0fbb9a8bc600063540443258c66c31f31048008
author Sergio Lopez <slp@redhat.com> Mon Feb 04 13:20:43 2019 +0100
committer Gerd Hoffmann <kraxel@redhat.com> Tue Feb 05 09:52:36 2019 +0100
tree 676a89415bf30d408d91e615a70947a1c5c3ff23
parent 09bd7ba9f5f7bd1c0cf62ba89731ae3cc6d1c72e

ui: don't send any event if delta_y == 0

When the user raises their fingers from the touchpad, we may receive a
GDK_SMOOTH_SCROLL event with delta_y == 0. Avoid generating a WHEEL_UP
event in this situation.

Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-id: 20190204122043.43007-1-slp@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

ui/gtk.c

diff --git a/ui/gtk.c b/ui/gtk.c
index 87c0e33..5a58435 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -1004,7 +1004,9 @@
                                          &delta_x, &delta_y)) {
             return TRUE;
         }
-        if (delta_y > 0) {
+        if (delta_y == 0) {
+            return TRUE;
+        } else if (delta_y > 0) {
             btn = INPUT_BUTTON_WHEEL_DOWN;
         } else {
             btn = INPUT_BUTTON_WHEEL_UP;