Move fake_configure_notify to libi3

libi3/fake_configure_notify.c

@@ -0,0 +1,49 @@
+/*
+ * vim:ts=4:sw=4:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ *
+ * © 2009-2011 Michael Stapelberg and contributors
+ *
+ * See file LICENSE for license information.
+ *
+ */
+#include <stdlib.h>
+#include <stdbool.h>
+
+#include <xcb/xcb.h>
+#include <xcb/xproto.h>
+
+#include "libi3.h"
+
+/*
+ * Generates a configure_notify event and sends it to the given window
+ * Applications need this to think they’ve configured themselves correctly.
+ * The truth is, however, that we will manage them.
+ *
+ */
+void fake_configure_notify(xcb_connection_t *conn, xcb_rectangle_t r, xcb_window_t window, int border_width) {
+    /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
+     * In order to properly initialize these bytes, we allocate 32 bytes even
+     * though we only need less for an xcb_configure_notify_event_t */
+    void *event = scalloc(32);
+    xcb_configure_notify_event_t *generated_event = event;
+
+    generated_event->event = window;
+    generated_event->window = window;
+    generated_event->response_type = XCB_CONFIGURE_NOTIFY;
+
+    generated_event->x = r.x;
+    generated_event->y = r.y;
+    generated_event->width = r.width;
+    generated_event->height = r.height;
+
+    generated_event->border_width = border_width;
+    generated_event->above_sibling = XCB_NONE;
+    generated_event->override_redirect = false;
+
+    xcb_send_event(conn, false, window, XCB_EVENT_MASK_STRUCTURE_NOTIFY, (char*)generated_event);
+    xcb_flush(conn);
+
+    free(event);
+}