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#ifndef KEYBOARD_EVENT_H
#define KEYBOARD_EVENT_H
/* Read keyboard input from linux /dev/input/eventN devices, with hotplug support */
#include "hotplug.h"
/* C stdlib */
#include <stdbool.h>
#include <stdint.h>
/* POSIX */
#include <poll.h>
#include <pthread.h>
/* LINUX */
#include <linux/input-event-codes.h>
#define MAX_EVENT_POLLS 32
#define MAX_CLOSE_FDS 256
#define MAX_GLOBAL_HOTKEYS 32
typedef enum {
KEYBOARD_MODKEY_LALT = 1 << 0,
KEYBOARD_MODKEY_RALT = 1 << 1,
KEYBOARD_MODKEY_LSUPER = 1 << 2,
KEYBOARD_MODKEY_RSUPER = 1 << 3,
KEYBOARD_MODKEY_LCTRL = 1 << 4,
KEYBOARD_MODKEY_RCTRL = 1 << 5,
KEYBOARD_MODKEY_LSHIFT = 1 << 6,
KEYBOARD_MODKEY_RSHIFT = 1 << 7
} keyboard_modkeys;
typedef enum {
KEYBOARD_BUTTON_RELEASED,
KEYBOARD_BUTTON_PRESSED
} keyboard_button_state;
typedef struct {
int dev_input_id;
bool grabbed;
unsigned char *key_states;
int num_keys_pressed;
} event_extra_data;
typedef enum {
KEYBOARD_GRAB_TYPE_ALL,
KEYBOARD_GRAB_TYPE_VIRTUAL
} keyboard_grab_type;
typedef struct {
uint32_t key;
uint32_t modifiers; /* keyboard_modkeys bitmask */
char *action;
} global_hotkey;
typedef struct {
struct pollfd event_polls[MAX_EVENT_POLLS]; /* Current size is |num_event_polls| */
event_extra_data event_extra_data[MAX_EVENT_POLLS]; /* Current size is |num_event_polls| */
int num_event_polls;
int stdin_event_index;
int hotplug_event_index;
int uinput_fd;
bool stdin_failed;
keyboard_grab_type grab_type;
pthread_t close_dev_input_fds_thread;
pthread_mutex_t close_dev_input_mutex;
int close_fds[MAX_CLOSE_FDS];
int num_close_fds;
bool running;
char stdin_command_data[512];
int stdin_command_data_size;
global_hotkey global_hotkeys[MAX_GLOBAL_HOTKEYS];
int num_global_hotkeys;
hotplug_event hotplug_ev;
uint32_t modifier_button_states;
} keyboard_event;
bool keyboard_event_init(keyboard_event *self, bool exclusive_grab, keyboard_grab_type grab_type);
void keyboard_event_deinit(keyboard_event *self);
/* If |timeout_milliseconds| is -1 then wait until an event is received */
void keyboard_event_poll_events(keyboard_event *self, int timeout_milliseconds);
bool keyboard_event_stdin_has_failed(const keyboard_event *self);
#endif /* KEYBOARD_EVENT_H */
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