Given that tablets may not have the same x/y resolution, raw or normalized
values are mostly meaningless and likely to be handled the wrong way.
Providing x/y in mm is the only constant, meaningful value.
Signed-off-by: Peter Hutterer <peter.hutte...@who-t.net>
---
src/evdev-tablet.c | 3 +++
src/libinput.h | 10 +++++-----
2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/src/evdev-tablet.c b/src/evdev-tablet.c
index 4efb36c..09bb454 100644
--- a/src/evdev-tablet.c
+++ b/src/evdev-tablet.c
@@ -141,6 +141,9 @@ tablet_check_notify_axes(struct tablet_dispatch *tablet,
switch (a) {
case LIBINPUT_TABLET_AXIS_X:
case LIBINPUT_TABLET_AXIS_Y:
+ tablet->axes[a] = evdev_convert_to_mm(absinfo,
+ absinfo->value);
+ break;
case LIBINPUT_TABLET_AXIS_DISTANCE:
tablet->axes[a] = absinfo->value;
break;
diff --git a/src/libinput.h b/src/libinput.h
index 04f40fa..ada6829 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -861,11 +861,11 @@ libinput_event_tablet_axis_has_changed(struct
libinput_event_tablet *event,
*
* Return the axis value of a given axis for a tablet. The interpretation of
the
* value is dependent on the axis:
- * - @ref LIBINPUT_TABLET_AXIS_X and @ref LIBINPUT_TABLET_AXIS_Y - the raw X
and
- * Y coordinates of the tablet tool. By default these are not transformed,
- * however libinput provides libinput_event_tablet_get_x_transformed() and
- * libinput_event_tablet_get_y_transformed() for transforming each respective
- * axis value.
+ * - @ref LIBINPUT_TABLET_AXIS_X and @ref LIBINPUT_TABLET_AXIS_Y - the X and
+ * Y coordinates of the tablet tool, in mm from the top left corner of the
+ * tablet. Use libinput_event_tablet_get_x_transformed() and
+ * libinput_event_tablet_get_y_transformed() for transforming each
+ * respective axis value.
* - @ref LIBINPUT_TABLET_AXIS_DISTANCE - Approximately how many millimeters
* away from the tablet's sensor the tool is
* - @ref LIBINPUT_TABLET_AXIS_PRESSURE - The current pressure being applied on
--
1.9.3
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