1 files changed, 51 insertions, 0 deletions
diff --git a/desktop/grab.c b/desktop/grab.c
new file mode 100644
index 0000000..716b0c6
--- /dev/null
+++ b/desktop/grab.c
@@ -0,0 +1,51 @@
+#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);
+}