mirror of
https://gitlab.freedesktop.org/libinput/libinput.git
synced 2025-12-20 02:10:07 +01:00
a202ed6115
This avoids mixing up milliseconds and usec, both by failing if we're providing just a number somewhere we expect usecs and also by making the API blindingly obvious that we're in usecs now. Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/1373>
103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/*
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* Copyright © 2019 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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#pragma once
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#include "config.h"
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#include <libevdev/libevdev.h>
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#include <linux/input.h>
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#include <stdbool.h>
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#include <string.h>
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#include "util-mem.h"
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#include "util-newtype.h"
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#include "util-time.h"
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static inline struct input_event
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input_event_init(usec_t time, unsigned int type, unsigned int code, int value)
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{
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struct input_event ev;
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struct timeval tval = usec_to_timeval(time);
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ev.input_event_sec = tval.tv_sec;
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ev.input_event_usec = tval.tv_usec;
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ev.type = type;
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ev.code = code;
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ev.value = value;
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return ev;
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}
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static inline usec_t
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input_event_time(const struct input_event *e)
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{
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struct timeval tval;
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tval.tv_sec = e->input_event_sec;
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tval.tv_usec = e->input_event_usec;
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return usec_from_timeval(&tval);
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}
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static inline void
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input_event_set_time(struct input_event *e, usec_t time)
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{
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struct timeval tval = usec_to_timeval(time);
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e->input_event_sec = tval.tv_sec;
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e->input_event_usec = tval.tv_usec;
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}
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static inline double
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absinfo_range(const struct input_absinfo *abs)
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{
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return (double)(abs->maximum - abs->minimum + 1);
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}
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static inline double
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absinfo_normalize_value(const struct input_absinfo *abs, int value)
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{
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return min(1.0,
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max(0.0,
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(double)(value - abs->minimum) / (abs->maximum - abs->minimum)));
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}
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static inline double
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absinfo_normalize(const struct input_absinfo *abs)
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{
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return absinfo_normalize_value(abs, abs->value);
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}
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static inline double
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absinfo_scale_axis(const struct input_absinfo *absinfo, double val, double to_range)
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{
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return (val - absinfo->minimum) * to_range / absinfo_range(absinfo);
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}
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static inline double
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absinfo_convert_to_mm(const struct input_absinfo *absinfo, double v)
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{
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double value = v - absinfo->minimum;
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return value / absinfo->resolution;
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}
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