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8d9e7a1bcf
The quartett of new config functions is: libinput_device_config_accel_get_profiles libinput_device_config_accel_get_profile libinput_device_config_accel_set_profile libinput_device_config_accel_get_default_profile The profile defines how the pointer acceleration works, from a very high-level perspective. Two profiles are on offer, "adaptive", the standard one we have used so far and "flat" which is a simple multiplier of input deltas and provides 1:1 mapping of device movement vs pointer movement. The speed setting is on top of the profile, a speed of 0 (default) is the equivalent to "no pointer acceleration". This is popular among gamers and users of switchable-dpi mice. The flat profile unnormalizes the deltas, i.e. you get what the device does and any device below 800dpi will feel excruciatingly slow. The speed range [-1, 1] maps into 0-200% of the speed. At 200%, a delta of 1 is translated into a 2 pixel movement, anything higher makes it rather pointless. The flat profile is currently available for all pointer devices but touchpads. https://bugs.freedesktop.org/show_bug.cgi?id=89485 Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/*
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* Copyright © 2012 Jonas Ådahl
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef FILTER_PRIVATE_H
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#define FILTER_PRIVATE_H
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#include "config.h"
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#include "filter.h"
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struct motion_filter_interface {
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enum libinput_config_accel_profile type;
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struct normalized_coords (*filter)(
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struct motion_filter *filter,
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const struct normalized_coords *unaccelerated,
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void *data, uint64_t time);
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struct normalized_coords (*filter_constant)(
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struct motion_filter *filter,
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const struct normalized_coords *unaccelerated,
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void *data, uint64_t time);
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void (*restart)(struct motion_filter *filter,
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void *data,
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uint64_t time);
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void (*destroy)(struct motion_filter *filter);
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bool (*set_speed)(struct motion_filter *filter,
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double speed_adjustment);
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};
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struct motion_filter {
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double speed_adjustment; /* normalized [-1, 1] */
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struct motion_filter_interface *interface;
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};
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#endif
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