use Exporter ();
our @EXPORT = qw(
inlinec_connect
+ xtest_sync_with_i3
set_xkb_group
xtest_key_press
xtest_key_release
# ineffective.
my %sn_config;
BEGIN {
- %sn_config = ExtUtils::PkgConfig->find('xcb-xkb xcb-xtest');
+ %sn_config = ExtUtils::PkgConfig->find('xcb-xkb xcb-xtest xcb-util');
}
use Inline C => Config => LIBS => $sn_config{libs}, CCFLAGS => $sn_config{cflags};
#include <xcb/xcb.h>
#include <xcb/xkb.h>
#include <xcb/xtest.h>
+#include <xcb/xcb_aux.h>
static xcb_connection_t *conn = NULL;
+static xcb_window_t sync_window;
+static xcb_window_t root_window;
+static xcb_atom_t i3_sync_atom;
bool inlinec_connect() {
int screen;
}
free(usereply);
+ xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, xcb_intern_atom(conn, 0, strlen("I3_SYNC"), "I3_SYNC"), NULL);
+ i3_sync_atom = reply->atom;
+ free(reply);
+
+ xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screen);
+ root_window = root_screen->root;
+ sync_window = xcb_generate_id(conn);
+ xcb_create_window(conn,
+ XCB_COPY_FROM_PARENT, // depth
+ sync_window, // window
+ root_window, // parent
+ -15, // x
+ -15, // y
+ 1, // width
+ 1, // height
+ 0, // border_width
+ XCB_WINDOW_CLASS_INPUT_OUTPUT, // class
+ XCB_COPY_FROM_PARENT, // visual
+ XCB_CW_OVERRIDE_REDIRECT, // value_mask
+ (uint32_t[]){
+ 1, // override_redirect
+ }); // value_list
+
return true;
}
+void xtest_sync_with_i3() {
+ xcb_client_message_event_t ev;
+ memset(&ev, '\0', sizeof(xcb_client_message_event_t));
+
+ const int nonce = rand() % 255;
+
+ ev.response_type = XCB_CLIENT_MESSAGE;
+ ev.window = sync_window;
+ ev.type = i3_sync_atom;
+ ev.format = 32;
+ ev.data.data32[0] = sync_window;
+ ev.data.data32[1] = nonce;
+
+ xcb_send_event(conn, false, root_window, XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT, (char *)&ev);
+ xcb_flush(conn);
+
+ xcb_generic_event_t *event = NULL;
+ while (1) {
+ free(event);
+ if ((event = xcb_wait_for_event(conn)) == NULL) {
+ break;
+ }
+ if (event->response_type == 0) {
+ fprintf(stderr, "X11 Error received! sequence %x\n", event->sequence);
+ continue;
+ }
+
+ /* Strip off the highest bit (set if the event is generated) */
+ const int type = (event->response_type & 0x7F);
+ switch (type) {
+ case XCB_CLIENT_MESSAGE: {
+ xcb_client_message_event_t *ev = (xcb_client_message_event_t *)event;
+ {
+ const uint32_t got = ev->data.data32[0];
+ const uint32_t want = sync_window;
+ if (got != want) {
+ fprintf(stderr, "Ignoring ClientMessage: unknown window: got %d, want %d\n", got, want);
+ continue;
+ }
+ }
+ {
+ const uint32_t got = ev->data.data32[1];
+ const uint32_t want = nonce;
+ if (got != want) {
+ fprintf(stderr, "Ignoring ClientMessage: unknown nonce: got %d, want %d\n", got, want);
+ continue;
+ }
+ }
+ return;
+ }
+ default:
+ fprintf(stderr, "Unexpected X11 event of type %d received (XCB_CLIENT_MESSAGE = %d)\n", type, XCB_CLIENT_MESSAGE);
+ break;
+ }
+ }
+ free(event);
+}
+
// NOTE: while |group| should be a uint8_t, Inline::C will not define the
// function unless we use an int.
bool set_xkb_group(int group) {
Returns false when there was an X11 error, true otherwise.
+=head2 xtest_sync_with_i3()
+
+Ensures i3 has processed all X11 events which were triggered by this module.
+
=head1 AUTHOR
Michael Stapelberg <michael@i3wm.org>