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Handle EWMH requests to change current desktop 

This request is used by pagers and bars to change the current
desktop likely as a result of some user action. We interpret this as
a request to focus the given workspace.

for more information see:

http://standards.freedesktop.org/wm-spec/latest/ar01s03.html#idm140251368135008
This commit is contained in:
Tony Crisci 2014-07-04 05:39:07 -04:00 committed by Michael Stapelberg
parent 196e748e94
commit 0514be8d4b
2 changed files with 66 additions and 0 deletions
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32
src/handlers.c
View File

@ -806,6 +806,38 @@ static void handle_client_message(xcb_client_message_event_t *event) {
DLOG("Not handling WM_CHANGE_STATE request. (window = %d, state = %d)\n", event->window, event->data.data32[0]);
}
} else if (event->type == A__NET_CURRENT_DESKTOP) {
/* This request is used by pagers and bars to change the current
* desktop likely as a result of some user action. We interpret this as
* a request to focus the given workspace. See
* http://standards.freedesktop.org/wm-spec/latest/ar01s03.html#idm140251368135008
* */
Con *output;
uint32_t idx = 0;
DLOG("Request to change current desktop to index %d\n", event->data.data32[0]);
TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
Con *ws;
TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
if (STARTS_WITH(ws->name, "__"))
continue;
if (idx == event->data.data32[0]) {
/* data32[1] is a timestamp used to prevent focus race conditions */
if (event->data.data32[1])
last_timestamp = event->data.data32[1];
DLOG("Handling request to focus workspace %s\n", ws->name);
workspace_show(ws);
tree_render();
return;
}
++idx;
}
}
} else {
DLOG("unhandled clientmessage\n");
return;

34
testcases/t/217-NET_CURRENT_DESKTOP.t
View File

@ -71,6 +71,40 @@ is(current_desktop_index, 1, "Open on 0 and view 1");
cmd 'workspace 2';
is(current_desktop_index, 2, "Open and view empty");
#########################################################
# Test the _NET_CURRENT_DESKTOP client request
# This request is sent by pagers and bars to switch the current desktop (which
# is like an ersatz workspace) to the given index
#########################################################
sub send_current_desktop_request {
my ($idx) = @_;
my $msg = pack "CCSLLLLLL",
X11::XCB::CLIENT_MESSAGE, # response_type
32, # format
0, # sequence
0,
$_NET_CURRENT_DESKTOP,
$idx, # data32[0] (the desktop index)
0, # data32[1] (can be a timestamp)
0, # data32[2]
0, # data32[3]
0; # data32[4]
$x->send_event(0, $x->get_root_window(), X11::XCB::EVENT_MASK_SUBSTRUCTURE_REDIRECT, $msg);
}
send_current_desktop_request(1);
is(current_desktop_index, 1, 'current desktop request switched to desktop 1');
# note that _NET_CURRENT_DESKTOP is an index and that in this case, workspace 1
# is at index 1 as a convenience for the test
is(focused_ws, '1', 'current desktop request switched to workspace 1');
send_current_desktop_request(0);
is(current_desktop_index, 0, 'current desktop request switched to desktop 0');
is(focused_ws, '0', 'current desktop request switched to workspace 0');
exit_gracefully($pid);
done_testing;