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Add abs setters for changing a single value on an abs axis

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Changing a single value on an abs axis is slightly more common than
having to enable that axis outright. Provide a set of accessors for
doing so.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
This commit is contained in:
Peter Hutterer 2013-07-24 15:52:02 +10:00
parent 00528f27d5
commit 699399f653
3 changed files with 141 additions and 0 deletions
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22
libevdev/libevdev.c
View file

@ -821,6 +821,28 @@ ABS_GETTER(fuzz, fuzz)
ABS_GETTER(flat, flat)
ABS_GETTER(resolution, resolution)
#define ABS_SETTER(field) \
void libevdev_set_abs_##field(struct libevdev *dev, unsigned int code, int val) \
{ \
if (!libevdev_has_event_code(dev, EV_ABS, code)) \
return; \
dev->abs_info[code].field = val; \
}
ABS_SETTER(maximum)
ABS_SETTER(minimum)
ABS_SETTER(fuzz)
ABS_SETTER(flat)
ABS_SETTER(resolution)
void libevdev_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs)
{
if (!libevdev_has_event_code(dev, EV_ABS, code))
return;
dev->abs_info[code] = *abs;
}
int
libevdev_enable_event_type(struct libevdev *dev, unsigned int type)
{

54
libevdev/libevdev.h
View file

@ -842,6 +842,60 @@ int libevdev_get_num_slots(const struct libevdev *dev);
*/
int libevdev_get_current_slot(const struct libevdev *dev);
/**
* @ingroup kernel
*
* Change the minimum for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_minimum(struct libevdev *dev, unsigned int code, int min);
/**
* @ingroup kernel
*
* Change the maximum for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_maximum(struct libevdev *dev, unsigned int code, int max);
/**
* @ingroup kernel
*
* Change the fuzz for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_fuzz(struct libevdev *dev, unsigned int code, int fuzz);
/**
* @ingroup kernel
*
* Change the flat for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_flat(struct libevdev *dev, unsigned int code, int flat);
/**
* @ingroup kernel
*
* Change the resolution for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_resolution(struct libevdev *dev, unsigned int code, int resolution);
/**
* @ingroup kernel
*
* Change the abs info for the given EV_ABS event code, if the code exists.
* This function has no effect if libevdev_has_event_code() returns false for
* this code.
*/
void libevdev_set_abs_info(struct libevdev *dev, unsigned int code, const struct input_absinfo *abs);
/**
* @ingroup kernel
*

65
test/test-libevdev-has-event.c
View file

@ -543,6 +543,70 @@ START_TEST(test_device_get_abs_info)
}
END_TEST
START_TEST(test_device_set_abs)
{
struct uinput_device* uidev;
struct libevdev *dev;
struct input_absinfo abs[2];
struct input_absinfo a;
int rc;
memset(abs, 0, sizeof(abs));
abs[0].value = ABS_X;
abs[0].maximum = 1000;
abs[1].value = ABS_Y;
abs[1].maximum = 1000;
rc = test_create_abs_device(&uidev, &dev,
2, abs,
EV_SYN,
-1);
ck_assert_msg(rc == 0, "Failed to create device: %s", strerror(-rc));
libevdev_set_abs_minimum(dev, ABS_X, 1);
libevdev_set_abs_minimum(dev, ABS_Y, 5);
ck_assert_int_eq(libevdev_get_abs_minimum(dev, ABS_X), 1);
ck_assert_int_eq(libevdev_get_abs_minimum(dev, ABS_Y), 5);
libevdev_set_abs_maximum(dev, ABS_X, 3000);
libevdev_set_abs_maximum(dev, ABS_Y, 5000);
ck_assert_int_eq(libevdev_get_abs_maximum(dev, ABS_X), 3000);
ck_assert_int_eq(libevdev_get_abs_maximum(dev, ABS_Y), 5000);
libevdev_set_abs_fuzz(dev, ABS_X, 3);
libevdev_set_abs_fuzz(dev, ABS_Y, 5);
ck_assert_int_eq(libevdev_get_abs_fuzz(dev, ABS_X), 3);
ck_assert_int_eq(libevdev_get_abs_fuzz(dev, ABS_Y), 5);
libevdev_set_abs_flat(dev, ABS_X, 8);
libevdev_set_abs_flat(dev, ABS_Y, 15);
ck_assert_int_eq(libevdev_get_abs_flat(dev, ABS_X), 8);
ck_assert_int_eq(libevdev_get_abs_flat(dev, ABS_Y), 15);
libevdev_set_abs_resolution(dev, ABS_X, 80);
libevdev_set_abs_resolution(dev, ABS_Y, 150);
ck_assert_int_eq(libevdev_get_abs_resolution(dev, ABS_X), 80);
ck_assert_int_eq(libevdev_get_abs_resolution(dev, ABS_Y), 150);
a.minimum = 10;
a.maximum = 100;
a.fuzz = 13;
a.flat = 1;
a.resolution = 16;
libevdev_set_abs_info(dev, ABS_X, &a);
ck_assert_int_eq(memcmp(&a, libevdev_get_abs_info(dev, ABS_X), sizeof(a)), 0);
libevdev_set_abs_minimum(dev, ABS_Z, 10);
ck_assert_int_eq(libevdev_has_event_code(dev, EV_ABS, ABS_Z), 0);
uinput_device_free(uidev);
libevdev_free(dev);
}
END_TEST
START_TEST(test_device_enable_bit)
{
struct uinput_device* uidev;
@ -816,6 +880,7 @@ libevdev_has_event_test(void)
suite_add_tcase(s, tc);
tc = tcase_create("device bit manipulation");
tcase_add_test(tc, test_device_set_abs);
tcase_add_test(tc, test_device_enable_bit);
tcase_add_test(tc, test_device_enable_bit_invalid);
tcase_add_test(tc, test_device_disable_bit);