1 files changed, 92 insertions, 0 deletions
diff --git a/tools/gsr-global-hotkeys/keyboard_event.h b/tools/gsr-global-hotkeys/keyboard_event.h
new file mode 100644
index 0000000..a86b3dd
--- /dev/null
+++ b/tools/gsr-global-hotkeys/keyboard_event.h
@@ -0,0 +1,92 @@
+#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 */