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#include <stdio.h>
#include <stdbool.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/XF86keysym.h>
#include "grab.h"
static int error_handler(Display *dpy, XErrorEvent *err) {
fprintf(stderr, "Failed to grab key!\n");
return 0;
}
void grab_init(void (*handler)(enum HotkeyEvent e)) {
Display *dpy = XOpenDisplay(0);
Window root = DefaultRootWindow(dpy);
XEvent ev;
struct Hotkey hotkeys[HOTKEYS_COUNT] = {
{ HK_PAUSE, XKeysymToKeycode(dpy, XF86XK_AudioPause) },
{ HK_PLAY, XKeysymToKeycode(dpy, XF86XK_AudioPlay) },
{ HK_NEXT, XKeysymToKeycode(dpy, XF86XK_AudioNext) },
{ HK_PREV, XKeysymToKeycode(dpy, XF86XK_AudioPrev) }
};
XSetErrorHandler(error_handler);
for (int i = 0; i < HOTKEYS_COUNT; i++) {
XGrabKey(dpy, hotkeys[i].keycode, 0, root, false, GrabModeAsync, GrabModeAsync);
}
XSelectInput(dpy, root, KeyPressMask);
while (true) {
XNextEvent(dpy, &ev);
switch (ev.type) {
case KeyPress: ;
for (int i = 0; i < HOTKEYS_COUNT; i++) {
if (ev.xkey.keycode == hotkeys[i].keycode) {
(*handler)(hotkeys[i].event);
break;
}
}
break;
default:
break;
}
}
XCloseDisplay(dpy);
}
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