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/*
* Copyright © 2012 Jonas Ådahl
* Copyright © 2014-2015 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef FILTER_H
#define FILTER_H
#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include "libinput-private.h"
struct motion_filter;
/**
* Accelerate the given coordinates.
* Takes a set of unaccelerated deltas and accelerates them based on the
* current and previous motion.
*
* This is a superset of filter_dispatch_constant()
*
* @param filter The device's motion filter
* @param unaccelerated The unaccelerated delta in the device's dpi
* resolution as specified during filter creation. If a device has uneven
* resolution for x and y, one axis needs to be scaled to match the
* originally provided resolution.
* @param data Custom data
* @param time The time of the delta
*
* @return A set of normalized coordinates that can be used for pixel
* movement. The normalized coordiantes are scaled to the default dpi range,
* i.e. regardless of the resolution of the underlying device, the returned
* values always reflect a 1000dpi mouse.
*
* @see filter_dispatch_constant
*/
struct normalized_coords
filter_dispatch(struct motion_filter *filter,
const struct device_float_coords *unaccelerated,
void *data, uint64_t time);
/**
* Apply constant motion filters, but no acceleration.
*
* Takes a set of unaccelerated deltas and applies any constant filters to
* it but does not accelerate the delta in the conventional sense.
*
* @param filter The device's motion filter
* @param unaccelerated The unaccelerated delta in the device's dpi
* resolution as specified during filter creation. If a device has uneven
* resolution for x and y, one axis needs to be scaled to match the
* originally provided resolution.
* @param data Custom data
* @param time The time of the delta
*
* @see filter_dispatch
*/
struct normalized_coords
filter_dispatch_constant(struct motion_filter *filter,
const struct device_float_coords *unaccelerated,
void *data, uint64_t time);
void
filter_restart(struct motion_filter *filter,
void *data, uint64_t time);
void
filter_destroy(struct motion_filter *filter);
bool
filter_set_speed(struct motion_filter *filter,
double speed);
double
filter_get_speed(struct motion_filter *filter);
enum libinput_config_accel_profile
filter_get_type(struct motion_filter *filter);
typedef double (*accel_profile_func_t)(struct motion_filter *filter,
void *data,
double velocity,
uint64_t time);
/* Pointer acceleration types */
struct motion_filter *
create_pointer_accelerator_filter_flat(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_linear(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_linear_low_dpi(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_touchpad(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_lenovo_x230(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_trackpoint(int dpi);
struct motion_filter *
create_pointer_accelerator_filter_tablet(int xres, int yres);
/*
* Pointer acceleration profiles.
*/
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,
uint64_t time);
double
touchpad_accel_profile_linear(struct motion_filter *filter,
void *data,
double speed_in,
uint64_t time);
double
touchpad_lenovo_x230_accel_profile(struct motion_filter *filter,
void *data,
double speed_in,
uint64_t time);
double
trackpoint_accel_profile(struct motion_filter *filter,
void *data,
double speed_in,
uint64_t time);
#endif /* FILTER_H */
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