/*-*- 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) 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);