kbgwm

commit ac39f5d141b39ee9d8a09c8eb6859d6908bd04e0
parent f0eafa4cea296b091bcd1c41c03c9b97ef481abf
Author: Kebigon <git@kebigon.xyz>
Date:   Thu,  2 Jul 2020 20:28:36 +0900

Start messing around with XCB

Diffstat:
A
src/config.h
 | 
7
+++++++
A
src/kbgwm.c
 | 
100
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 107 insertions(+), 0 deletions(-)
diff --git a/src/config.h b/src/config.h
@@ -0,0 +1,7 @@
+
+#define MODKEY XCB_MOD_MASK_4
+
+Key keys[] =
+{
+	{ MODKEY, XK_Return }
+};
diff --git a/src/kbgwm.c b/src/kbgwm.c
@@ -0,0 +1,100 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include <xcb/xcb.h>
+#include <xcb/xcb_keysyms.h>
+#include <X11/keysym.h>
+
+#define LENGTH(X) (sizeof X / sizeof X[0])
+
+typedef struct {
+	uint16_t modifiers;
+	xcb_keysym_t key;
+} Key;
+
+#include "config.h"
+
+bool quit = false;
+xcb_connection_t *c;
+xcb_window_t root;
+
+void setupEvents()
+{
+	/*
+	 * Get all the key symbols
+	 */
+	xcb_key_symbols_t *syms = xcb_key_symbols_alloc(c);
+
+	for (int i = 0; i != LENGTH(keys); i++)
+	{
+		xcb_keycode_t *keycode = xcb_key_symbols_get_keycode(syms, keys[i].key);
+
+		xcb_grab_key(c, 1, root, keys[i].modifiers, keycode,
+		             XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
+
+		free(keycode);
+	}
+
+	xcb_key_symbols_free(syms);
+}
+
+void eventLoop()
+{
+	xcb_generic_event_t *event;
+
+	while (!quit)
+	{
+		event = xcb_wait_for_event(c);
+
+		switch (event->response_type & ~0x80)
+		{
+		}
+
+		free(event);
+	}
+}
+
+int main(void)
+{
+	/*
+	 * displayname = NULL -> use DISPLAY environment variable
+	 */
+	int screenp;
+	c = xcb_connect(NULL, &screenp);
+	if (xcb_connection_has_error(c))
+	{
+		perror("xcb_connect");
+		exit(1);
+	}
+
+	/*
+	 * Find the screen
+	 */
+	xcb_screen_iterator_t iter = xcb_setup_roots_iterator(xcb_get_setup(c));
+	for (int i = 0; i < screenp; ++i)
+	{
+		xcb_screen_next(&iter);
+	}
+
+	xcb_screen_t *screen = iter.data;
+	if (!screen)
+	{
+		xcb_disconnect(c);
+		perror("screen not found");
+		exit(1);
+	}
+
+	root = screen->root;
+
+	xcb_flush(c);
+
+	setupEvents();
+
+	// Event loop
+	eventLoop();
+
+	xcb_disconnect(c);
+
+	return 0;
+}