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33162632cb
This looked good on paper but clearly no-one (including myself) ever tested this
in a real-life situation or they would've noticed that the constant factor is
missing, causing a segfault on the first two-finger scroll event, touchpad
gesture or button scrolling.
Adding the constant factor makes the API much worse and the benefit is
unclear, so out of the window it goes. We can revisit this for libinput 1.12
but this isn't going to make the next release.
This reverts commit d8bd650540.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
158 lines
4.9 KiB
C
158 lines
4.9 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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* @param filter The device's motion filter
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* @param unaccelerated The unaccelerated delta in the device's dpi
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* resolution as specified during filter creation. If a device has uneven
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* resolution for x and y, one axis needs to be scaled to match the
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* originally provided resolution.
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* @param data Custom data
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* @param time The time of the delta
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*
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* @return A set of normalized coordinates that can be used for pixel
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* movement. The normalized coordiantes are scaled to the default dpi range,
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* i.e. regardless of the resolution of the underlying device, the returned
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* values always reflect a 1000dpi mouse.
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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 device_float_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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* @param filter The device's motion filter
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* @param unaccelerated The unaccelerated delta in the device's dpi
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* resolution as specified during filter creation. If a device has uneven
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* resolution for x and y, one axis needs to be scaled to match the
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* originally provided resolution.
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* @param data Custom data
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* @param time The time of the delta
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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 device_float_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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uint64_t event_delta_smooth_threshold,
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uint64_t event_delta_smooth_value);
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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 max_delta);
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struct motion_filter *
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create_pointer_accelerator_filter_tablet(int xres, int yres);
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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 delta);
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#endif /* FILTER_H */
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