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Slots are now definitely zero-indexed, see recent kernel patch

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doc: specify that ABS_MT_SLOT must have a minimum of 0

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2013-06-22 19:45:39 +10:00
parent 960dc91844
commit b10444f82f
2 changed files with 4 additions and 4 deletions
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2
libevdev/libevdev.c
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@ -243,7 +243,7 @@ libevdev_set_fd(struct libevdev* dev, int fd)
dev->abs_info[i] = abs_info;
if (i == ABS_MT_SLOT) {
dev->num_slots = abs_info.maximum + 1; /* FIXME: non-zero min? */
dev->num_slots = abs_info.maximum + 1;
dev->current_slot = abs_info.value;
}

6
libevdev/libevdev.h
View file

@ -533,11 +533,11 @@ int libevdev_fetch_slot_value(const struct libevdev *dev, unsigned int slot, uns
*
* Get the number of slots supported by this device.
*
* Note that the slot offset may be non-zero, use libevdev_get_abs_min() or
* libevdev_get_abs_info() to get the minimum slot number.
*
* @return The number of slots supported, or -1 if the device does not provide
* any slots
*
* @note A device may provide ABS_MT_SLOT but a total number of 0 slots. Hence
* the return value of -1 for "device does not provide slots at all"
*/
int libevdev_get_num_slots(const struct libevdev *dev);