diff options
| author | Peter Hutterer <peter.hutterer@who-t.net> | 2015-06-23 12:45:16 +1000 |
|---|---|---|
| committer | Peter Hutterer <peter.hutterer@who-t.net> | 2015-07-02 13:03:43 +1000 |
| commit | 3928f3228105f65e4ee6186572e3f95f78c96113 (patch) | |
| tree | 5f1a4c7bd66c09a88bb1d01997e447c4c874baba /src/filter.h | |
| parent | 4df1a9b66e437a191fab0ef4fc48511e993c4680 (diff) | |
filter: add a custom low-dpi acceleration
Motion normalization does not work well for devices below the default 1000dpi
rate. A 400dpi mouse's minimum movement generates a 2.5 normalized motion,
causing it to skip pixels at low speeds even when unaccelerated.
Likewise, we don't want 1000dpi mice to be normalized to a 400dpi mouse, it
feels sluggish even at higher acceleration speeds.
Instead, add a custom acceleration method for lower-dpi mice. At low-speeds,
one device unit results in a one-pixel movement. Depending on the DPI factor,
the acceleration kicks in earlier and goes to higher acceleration so faster
movements with a low-dpi mouse feel approximately the same as the same
movement on a higher-dpi mouse.
https://bugzilla.redhat.com/show_bug.cgi?id=1231304
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'src/filter.h')
| -rw-r--r-- | src/filter.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/filter.h b/src/filter.h index 64a8b50..617fab1 100644 --- a/src/filter.h +++ b/src/filter.h @@ -66,6 +66,11 @@ create_pointer_accelerator_filter(accel_profile_func_t filter, */ double +pointer_accel_profile_linear_low_dpi(struct motion_filter *filter, + void *data, + double speed_in, + uint64_t time); +double pointer_accel_profile_linear(struct motion_filter *filter, void *data, double speed_in, |