Peek at the ABS_MT_SLOT-1 axis. Expect that touch screens only have axes inside the MT range. --- src/udev/udev-builtin-input_id.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/udev/udev-builtin-input_id.c b/src/udev/udev-builtin-input_id.c index 0f9f021..59616c8 100644 --- a/src/udev/udev-builtin-input_id.c +++ b/src/udev/udev-builtin-input_id.c @@ -170,7 +170,8 @@ static bool test_pointers(struct udev_device *dev, finger_but_no_pen = test_bit(BTN_TOOL_FINGER, bitmask_key) && !test_bit(BTN_TOOL_PEN, bitmask_key); has_mouse_button = test_bit(BTN_LEFT, bitmask_key); has_rel_coordinates = test_bit(EV_REL, bitmask_ev) && test_bit(REL_X, bitmask_rel) && test_bit(REL_Y, bitmask_rel); - has_mt_coordinates = test_bit(ABS_MT_POSITION_X, bitmask_abs) && test_bit(ABS_MT_POSITION_Y, bitmask_abs); + has_mt_coordinates = test_bit(ABS_MT_POSITION_X, bitmask_abs) && test_bit(ABS_MT_POSITION_Y, bitmask_abs) && + test_bit(ABS_MT_SLOT, bitmask_abs) && !test_bit(ABS_MT_SLOT - 1, bitmask_abs); is_direct = test_bit(INPUT_PROP_DIRECT, bitmask_props); has_touch = test_bit(BTN_TOUCH, bitmask_key); /* joysticks don't necessarily have buttons; e. g. -- 2.1.4 _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel