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93135c2012
Adds a dedicated scroll movement type to the custom acceleration profile. Supported by physical mouse and touchpad. Other profiles remain the same by using the same unaccelerated filter for the scroll filter. Signed-off-by: Yinon Burgansky <51504-Yinon@users.noreply.gitlab.freedesktop.org>
129 lines
4.1 KiB
C
129 lines
4.1 KiB
C
/*
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* Copyright © 2006-2009 Simon Thum
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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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#include "config.h"
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "filter.h"
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#include "libinput-util.h"
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#include "filter-private.h"
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#define TP_MAGIC_SLOWDOWN_FLAT 0.2968
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struct touchpad_accelerator_flat {
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struct motion_filter base;
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double factor;
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int dpi;
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};
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static struct normalized_coords
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accelerator_filter_touchpad_flat(struct motion_filter *filter,
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const struct device_float_coords *unaccelerated,
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void *data, uint64_t time)
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{
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struct touchpad_accelerator_flat *accel =
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(struct touchpad_accelerator_flat *)filter;
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double factor; /* unitless factor */
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struct normalized_coords normalized;
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/* You want flat acceleration, you get flat acceleration for the
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* device */
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factor = accel->factor;
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normalized = normalize_for_dpi(unaccelerated, accel->dpi);
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normalized.x = TP_MAGIC_SLOWDOWN_FLAT * factor * normalized.x;
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normalized.y = TP_MAGIC_SLOWDOWN_FLAT * factor * normalized.y;
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return normalized;
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}
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static struct normalized_coords
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accelerator_filter_noop_touchpad_flat(struct motion_filter *filter,
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const struct device_float_coords *unaccelerated,
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void *data, uint64_t time)
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{
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/* We map the unaccelerated flat filter to have the same behavior as
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* the "accelerated" flat filter.
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* The filter by definition is flat, i.e. it does not actually
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* apply any acceleration (merely a constant factor) and we can assume
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* that a user wants all mouse movement to have the same speed, mapped
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* 1:1 to the input speed.
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*
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* Thus we apply the same factor to our non-accelerated motion - this way
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* things like gestures end up having the same movement as
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* pointer motion.
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*/
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return accelerator_filter_touchpad_flat(filter, unaccelerated, data, time);
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}
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static bool
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accelerator_set_speed_touchpad_flat(struct motion_filter *filter,
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double speed_adjustment)
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{
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struct touchpad_accelerator_flat *accel_filter =
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(struct touchpad_accelerator_flat *)filter;
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assert(speed_adjustment >= -1.0 && speed_adjustment <= 1.0);
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accel_filter->factor = max(0.005, 1 + speed_adjustment);
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filter->speed_adjustment = speed_adjustment;
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return true;
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}
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static void
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accelerator_destroy_touchpad_flat(struct motion_filter *filter)
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{
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struct touchpad_accelerator_flat *accel =
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(struct touchpad_accelerator_flat *) filter;
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free(accel);
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}
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static const struct motion_filter_interface accelerator_interface_touchpad_flat = {
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.type = LIBINPUT_CONFIG_ACCEL_PROFILE_FLAT,
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.filter = accelerator_filter_touchpad_flat,
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.filter_constant = accelerator_filter_noop_touchpad_flat,
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.filter_scroll = accelerator_filter_noop_touchpad_flat,
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.restart = NULL,
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.destroy = accelerator_destroy_touchpad_flat,
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.set_speed = accelerator_set_speed_touchpad_flat,
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};
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struct motion_filter *
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create_pointer_accelerator_filter_touchpad_flat(int dpi)
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{
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struct touchpad_accelerator_flat *filter;
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filter = zalloc(sizeof *filter);
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filter->base.interface = &accelerator_interface_touchpad_flat;
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filter->dpi = dpi;
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return &filter->base;
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}
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