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touchpad: don't check clickfinger distance for three fingers

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It's reasonable to expect a thumb (or the other hand's index finger) to click
a button while a finger is down for movement. It's less reasonable to expect
this when two fingers are interacting with the touchpad, or when two fingers
click the touchpad (even on a large touchpad that's an awkward position).

Simplify the clickfinger detection mechanism - if we have three touches down,
it's always a three-finger click. Two fingers may be a right click or a index
+ thumb click.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Peter Hutterer 2015-07-23 16:06:48 +10:00
parent ed1aee6061
commit 316f30d2f2
2 changed files with 85 additions and 22 deletions
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25
src/evdev-mt-touchpad-buttons.c
View file

@ -858,14 +858,12 @@ tp_clickfinger_set_button(struct tp_dispatch *tp)
unsigned int nfingers = tp->nfingers_down;
struct tp_touch *t;
struct tp_touch *first = NULL,
*second = NULL,
*third = NULL;
uint32_t close_touches = 0;
*second = NULL;
if (nfingers < 2 || nfingers > 3)
if (nfingers != 2)
goto out;
/* two or three fingers down on the touchpad. Check for distance
/* two fingers down on the touchpad. Check for distance
* between the fingers. */
tp_for_each_touch(tp, t) {
if (t->state != TOUCH_BEGIN && t->state != TOUCH_UPDATE)
@ -878,10 +876,6 @@ tp_clickfinger_set_button(struct tp_dispatch *tp)
first = t;
else if (!second)
second = t;
else if (!third) {
third = t;
break;
}
}
if (!first || !second) {
@ -889,15 +883,10 @@ tp_clickfinger_set_button(struct tp_dispatch *tp)
goto out;
}
close_touches |= tp_check_clickfinger_distance(tp, first, second) << 0;
close_touches |= tp_check_clickfinger_distance(tp, second, third) << 1;
close_touches |= tp_check_clickfinger_distance(tp, first, third) << 2;
switch(__builtin_popcount(close_touches)) {
case 0: nfingers = 1; break;
case 1: nfingers = 2; break;
default: nfingers = 3; break;
}
if (tp_check_clickfinger_distance(tp, first, second))
nfingers = 2;
else
nfingers = 1;
out:
switch (nfingers) {

82
test/touchpad-buttons.c
View file

@ -482,6 +482,78 @@ START_TEST(touchpad_2fg_clickfinger_distance)
}
END_TEST
START_TEST(touchpad_3fg_clickfinger_distance)
{
struct litest_device *dev = litest_current_device();
struct libinput *li = dev->libinput;
if (libevdev_get_num_slots(dev->evdev) < 3)
return;
enable_clickfinger(dev);
litest_drain_events(li);
litest_touch_down(dev, 0, 90, 90);
litest_touch_down(dev, 1, 10, 15);
litest_touch_down(dev, 2, 10, 15);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_event(dev, EV_KEY, BTN_LEFT, 1);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_event(dev, EV_KEY, BTN_LEFT, 0);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_touch_up(dev, 0);
litest_touch_up(dev, 1);
litest_touch_up(dev, 2);
litest_assert_button_event(li,
BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_PRESSED);
litest_assert_button_event(li,
BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_RELEASED);
}
END_TEST
START_TEST(touchpad_3fg_clickfinger_distance_btntool)
{
struct litest_device *dev = litest_current_device();
struct libinput *li = dev->libinput;
if (libevdev_get_num_slots(dev->evdev) > 2)
return;
enable_clickfinger(dev);
litest_drain_events(li);
litest_touch_down(dev, 0, 90, 90);
litest_touch_down(dev, 1, 10, 15);
libinput_dispatch(li);
litest_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP, 0);
litest_event(dev, EV_KEY, BTN_TOOL_TRIPLETAP, 1);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
libinput_dispatch(li);
litest_event(dev, EV_KEY, BTN_LEFT, 1);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_event(dev, EV_KEY, BTN_LEFT, 0);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP, 1);
litest_event(dev, EV_KEY, BTN_TOOL_TRIPLETAP, 0);
litest_event(dev, EV_SYN, SYN_REPORT, 0);
litest_touch_up(dev, 0);
litest_touch_up(dev, 1);
litest_assert_button_event(li,
BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_PRESSED);
litest_assert_button_event(li,
BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_RELEASED);
}
END_TEST
START_TEST(touchpad_2fg_clickfinger_bottom)
{
struct litest_device *dev = litest_current_device();
@ -728,8 +800,8 @@ START_TEST(touchpad_clickfinger_3fg_tool_position)
enable_clickfinger(dev);
litest_drain_events(li);
/* one in thumb area, one in normal area. spread is wide so the two
* real fingers don't count together. we expect a 2-finger click */
/* one in thumb area, one in normal area + TRIPLETAP. spread is wide
* but any 3fg touch+click counts as middle */
litest_touch_down(dev, 0, 5, 99);
litest_touch_down(dev, 1, 90, 15);
litest_event(dev, EV_KEY, BTN_TOOL_DOUBLETAP, 0);
@ -743,9 +815,9 @@ START_TEST(touchpad_clickfinger_3fg_tool_position)
litest_event(dev, EV_SYN, SYN_REPORT, 0);
libinput_dispatch(li);
litest_assert_button_event(li, BTN_RIGHT,
litest_assert_button_event(li, BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_PRESSED);
litest_assert_button_event(li, BTN_RIGHT,
litest_assert_button_event(li, BTN_MIDDLE,
LIBINPUT_BUTTON_STATE_RELEASED);
}
END_TEST
@ -1513,6 +1585,8 @@ litest_setup_tests(void)
litest_add("touchpad:clickfinger", touchpad_4fg_clickfinger_btntool_2slots, LITEST_CLICKPAD, LITEST_ANY);
litest_add("touchpad:clickfinger", touchpad_4fg_clickfinger_btntool_3slots, LITEST_CLICKPAD, LITEST_ANY);
litest_add("touchpad:clickfinger", touchpad_2fg_clickfinger_distance, LITEST_CLICKPAD, LITEST_ANY);
litest_add("touchpad:clickfinger", touchpad_3fg_clickfinger_distance, LITEST_CLICKPAD, LITEST_ANY);
litest_add("touchpad:clickfinger", touchpad_3fg_clickfinger_distance_btntool, LITEST_CLICKPAD, LITEST_ANY);
litest_add_for_device("touchpad:clickfinger", touchpad_2fg_clickfinger_bottom, LITEST_SYNAPTICS_TOPBUTTONPAD);
litest_add("touchpad:clickfinger", touchpad_clickfinger_to_area_method, LITEST_CLICKPAD, LITEST_ANY);
litest_add("touchpad:clickfinger",