From eb51ef01a4bd8bd7bea61a0a5fd524f66cf276cd Mon Sep 17 00:00:00 2001
From: Tommaso Negri <me@tommasongr.com>
Date: Tue, 11 Aug 2026 18:19:02 +0200
Subject: add additional daemons

---
 daemons/spaced.c | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 daemons/spaced.c

(limited to 'daemons/spaced.c')

diff --git a/daemons/spaced.c b/daemons/spaced.c
new file mode 100644
index 0000000..0729266
--- /dev/null
+++ b/daemons/spaced.c
@@ -0,0 +1,75 @@
+// spaced — desktop space daemon for bar
+//
+// Monitors the active desktop space and posts a Darwin notification
+// when the space changes. Uses a lightweight 0.5s poll of a CoreGraphics
+// private API.
+//
+// Compile:
+//   cc -o bar-spaced daemons/spaced.c -framework CoreFoundation
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <dlfcn.h>
+#include <notify.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static volatile int keep_running = 1;
+
+// Private CoreGraphics API
+typedef CFStringRef (*CGSCopyActiveMenuBarDisplayIdentifierFunc)(void);
+
+static CGSCopyActiveMenuBarDisplayIdentifierFunc copyIdentifier = NULL;
+
+static void handle_signal(int sig) {
+	(void)sig;
+	keep_running = 0;
+}
+
+int main(void) {
+	signal(SIGINT, handle_signal);
+	signal(SIGTERM, handle_signal);
+
+	// Load the private CGS API at runtime
+	void *handle = dlopen(
+		"/System/Library/PrivateFrameworks/CoreGraphics.framework/CoreGraphics",
+		RTLD_LAZY | RTLD_LOCAL);
+
+	if (!handle) {
+		fprintf(stderr, "bar-spaced: could not load CoreGraphics framework\n");
+		return 1;
+	}
+
+	copyIdentifier = (CGSCopyActiveMenuBarDisplayIdentifierFunc)
+		dlsym(handle, "CGSCopyActiveMenuBarDisplayIdentifier");
+
+	if (!copyIdentifier) {
+		fprintf(stderr, "bar-spaced: could not find CGS API\n");
+		dlclose(handle);
+		return 1;
+	}
+
+	CFStringRef last = NULL;
+	unsigned int pollCount = 0;
+
+	while (keep_running) {
+		CFStringRef current = copyIdentifier();
+
+		if (current) {
+			if (!last || !CFEqual(current, last)) {
+				notify_post("bar.touch.<block-name>");
+				if (last) CFRelease(last);
+				last = CFStringCreateCopy(NULL, current);
+			}
+			CFRelease(current);
+		}
+
+		usleep(500000); // 0.5 second intervals
+		pollCount++;
+	}
+
+	if (last) CFRelease(last);
+	dlclose(handle);
+	return 0;
+}
-- 
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