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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
/*
* IDev
*/
#pragma once
#include <inttypes.h>
#include <libudev.h>
#include <linux/input.h>
#include <stdbool.h>
#include <stdlib.h>
#include <systemd/sd-bus.h>
#include <systemd/sd-event.h>
#include <xkbcommon/xkbcommon.h>
#include "util.h"
typedef struct idev_data idev_data;
typedef struct idev_data_evdev idev_data_evdev;
typedef struct idev_data_keyboard idev_data_keyboard;
typedef struct idev_event idev_event;
typedef struct idev_device idev_device;
typedef struct idev_session idev_session;
typedef struct idev_context idev_context;
/*
* Types
*/
enum {
IDEV_ELEMENT_EVDEV,
IDEV_ELEMENT_CNT
};
enum {
IDEV_DEVICE_KEYBOARD,
IDEV_DEVICE_CNT
};
/*
* Evdev Elements
*/
struct idev_data_evdev {
struct input_event event;
};
/*
* Keyboard Devices
*/
struct xkb_state;
enum {
IDEV_KBDMOD_IDX_SHIFT,
IDEV_KBDMOD_IDX_CTRL,
IDEV_KBDMOD_IDX_ALT,
IDEV_KBDMOD_IDX_LINUX,
IDEV_KBDMOD_IDX_CAPS,
IDEV_KBDMOD_CNT,
IDEV_KBDMOD_SHIFT = 1 << IDEV_KBDMOD_IDX_SHIFT,
IDEV_KBDMOD_CTRL = 1 << IDEV_KBDMOD_IDX_CTRL,
IDEV_KBDMOD_ALT = 1 << IDEV_KBDMOD_IDX_ALT,
IDEV_KBDMOD_LINUX = 1 << IDEV_KBDMOD_IDX_LINUX,
IDEV_KBDMOD_CAPS = 1 << IDEV_KBDMOD_IDX_CAPS,
};
enum {
IDEV_KBDLED_IDX_NUM,
IDEV_KBDLED_IDX_CAPS,
IDEV_KBDLED_IDX_SCROLL,
IDEV_KBDLED_CNT,
IDEV_KBDLED_NUM = 1 << IDEV_KBDLED_IDX_NUM,
IDEV_KBDLED_CAPS = 1 << IDEV_KBDLED_IDX_CAPS,
IDEV_KBDLED_SCROLL = 1 << IDEV_KBDLED_IDX_SCROLL,
};
struct idev_data_keyboard {
struct xkb_state *xkb_state;
int8_t ascii;
uint8_t value;
uint16_t keycode;
uint32_t mods;
uint32_t consumed_mods;
uint32_t n_syms;
uint32_t *keysyms;
uint32_t *codepoints;
};
static inline bool idev_kbdmatch(idev_data_keyboard *kdata,
uint32_t mods, uint32_t n_syms,
const uint32_t *syms) {
const uint32_t significant = IDEV_KBDMOD_SHIFT |
IDEV_KBDMOD_CTRL |
IDEV_KBDMOD_ALT |
IDEV_KBDMOD_LINUX;
uint32_t real;
if (n_syms != kdata->n_syms)
return false;
real = kdata->mods & ~kdata->consumed_mods & significant;
if (real != (mods & ~kdata->consumed_mods))
return false;
return !memcmp(syms, kdata->keysyms, n_syms * sizeof(*syms));
}
#define IDEV_KBDMATCH(_kdata, _mods, _sym) \
idev_kbdmatch((_kdata), (_mods), 1, (const uint32_t[]){ (_sym) })
/*
* Data Packets
*/
enum {
IDEV_DATA_RESYNC,
IDEV_DATA_EVDEV,
IDEV_DATA_KEYBOARD,
IDEV_DATA_CNT
};
struct idev_data {
unsigned int type;
bool resync : 1;
union {
idev_data_evdev evdev;
idev_data_keyboard keyboard;
};
};
/*
* Events
*/
enum {
IDEV_EVENT_DEVICE_ADD,
IDEV_EVENT_DEVICE_REMOVE,
IDEV_EVENT_DEVICE_DATA,
IDEV_EVENT_CNT
};
struct idev_event {
unsigned int type;
union {
struct {
idev_device *device;
} device_add, device_remove;
struct {
idev_device *device;
idev_data data;
} device_data;
};
};
typedef int (*idev_event_fn) (idev_session *s, void *userdata, idev_event *ev);
/*
* Devices
*/
void idev_device_enable(idev_device *d);
void idev_device_disable(idev_device *d);
/*
* Sessions
*/
enum {
IDEV_SESSION_CUSTOM = (1 << 0),
IDEV_SESSION_MANAGED = (1 << 1),
};
int idev_session_new(idev_session **out,
idev_context *c,
unsigned int flags,
const char *name,
idev_event_fn event_fn,
void *userdata);
idev_session *idev_session_free(idev_session *s);
DEFINE_TRIVIAL_CLEANUP_FUNC(idev_session*, idev_session_free);
bool idev_session_is_enabled(idev_session *s);
void idev_session_enable(idev_session *s);
void idev_session_disable(idev_session *s);
int idev_session_add_evdev(idev_session *s, struct udev_device *ud);
int idev_session_remove_evdev(idev_session *s, struct udev_device *ud);
/*
* Contexts
*/
int idev_context_new(idev_context **out, sd_event *event, sd_bus *sysbus);
idev_context *idev_context_ref(idev_context *c);
idev_context *idev_context_unref(idev_context *c);
DEFINE_TRIVIAL_CLEANUP_FUNC(idev_context*, idev_context_unref);
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