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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>
133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/*
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* Copyright © 2012 Jonas Ådahl
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* Copyright © 2014-2015 Red Hat, Inc.
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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_H
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#define FILTER_H
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#include "config.h"
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#include <stdbool.h>
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#include <stdint.h>
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#include "libinput-private.h"
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struct motion_filter;
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/**
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* Accelerate the given coordinates.
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* Takes a set of unaccelerated deltas and accelerates them based on the
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* current and previous motion.
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*
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* This is a superset of filter_dispatch_constant()
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*
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* @see filter_dispatch_constant
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*/
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struct normalized_coords
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filter_dispatch(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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/**
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* Apply constant motion filters, but no acceleration.
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*
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* Takes a set of unaccelerated deltas and applies any constant filters to
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* it but does not accelerate the delta in the conventional sense.
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*
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* @see filter_dispatch
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*/
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struct normalized_coords
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filter_dispatch_constant(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
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filter_restart(struct motion_filter *filter,
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void *data, uint64_t time);
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void
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filter_destroy(struct motion_filter *filter);
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bool
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filter_set_speed(struct motion_filter *filter,
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double speed);
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double
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filter_get_speed(struct motion_filter *filter);
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enum libinput_config_accel_profile
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filter_get_type(struct motion_filter *filter);
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typedef double (*accel_profile_func_t)(struct motion_filter *filter,
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void *data,
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double velocity,
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uint64_t time);
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/* Pointer acceleration types */
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struct motion_filter *
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create_pointer_accelerator_filter_flat(int dpi);
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struct motion_filter *
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create_pointer_accelerator_filter_linear(int dpi);
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struct motion_filter *
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create_pointer_accelerator_filter_linear_low_dpi(int dpi);
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struct motion_filter *
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create_pointer_accelerator_filter_touchpad(int dpi);
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struct motion_filter *
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create_pointer_accelerator_filter_lenovo_x230(int dpi);
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struct motion_filter *
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create_pointer_accelerator_filter_trackpoint(int dpi);
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/*
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* Pointer acceleration profiles.
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*/
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double
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pointer_accel_profile_linear_low_dpi(struct motion_filter *filter,
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void *data,
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double speed_in,
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uint64_t time);
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double
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pointer_accel_profile_linear(struct motion_filter *filter,
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void *data,
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double speed_in,
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uint64_t time);
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double
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touchpad_accel_profile_linear(struct motion_filter *filter,
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void *data,
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double speed_in,
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uint64_t time);
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double
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touchpad_lenovo_x230_accel_profile(struct motion_filter *filter,
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void *data,
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double speed_in,
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uint64_t time);
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double
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trackpoint_accel_profile(struct motion_filter *filter,
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void *data,
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double speed_in,
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uint64_t time);
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#endif /* FILTER_H */
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