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Detect compositor at startup

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This commit is contained in:
o9000 2015-07-04 13:34:42 +02:00
parent 7cd5c16fca
commit 8242c969e3
1 changed files with 43 additions and 4 deletions
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47
src/tint.c
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@ -59,6 +59,43 @@ Atom dnd_atom;
int dnd_sent_request;
char *dnd_launcher_exec;
timeout* detect_compositor_timer = NULL;
int detect_compositor_timer_counter = 0;
void detect_compositor(void *arg)
{
if (server.composite_manager) {
stop_timeout(detect_compositor_timer);
return;
}
detect_compositor_timer_counter--;
if (detect_compositor_timer_counter < 0) {
stop_timeout(detect_compositor_timer);
return;
}
// No compositor, check for one
if (XGetSelectionOwner(server.dsp, server.atom._NET_WM_CM_S0) != None) {
stop_timeout(detect_compositor_timer);
// Restart tint2
fprintf(stderr, "Detected compositor, restarting tint2...\n");
kill(getpid(), SIGUSR1);
}
}
void start_detect_compositor()
{
// Already have a compositor, nothing to do
if (server.composite_manager)
return;
stop_timeout(detect_compositor_timer);
// Check every 0.5 seconds for up to 30 seconds
detect_compositor_timer_counter = 60;
detect_compositor_timer = add_timeout(500, 500, detect_compositor, 0, &detect_compositor_timer);
}
void signal_handler(int sig)
{
// signal handler is light as it should be
@ -1079,7 +1116,7 @@ int main (int argc, char *argv[])
int x11_fd, i;
Panel *panel;
GSList *it;
struct timeval* timeout;
struct timeval* select_timeout;
int hidden_dnd = 0;
// Make stdout/stderr flush after a newline (for some reason they don't even if tint2 is started from a terminal)
@ -1103,6 +1140,7 @@ start:
}
init_X11_post_config();
start_detect_compositor();
init_panel();
if (snapshot_path) {
@ -1169,12 +1207,12 @@ start:
}
update_next_timeout();
if (next_timeout.tv_sec >= 0 && next_timeout.tv_usec >= 0)
timeout = &next_timeout;
select_timeout = &next_timeout;
else
timeout = 0;
select_timeout = 0;
// Wait for X Event or a Timer
if (XPending(server.dsp) > 0 || select(maxfd+1, &fdset, 0, 0, timeout) >= 0) {
if (XPending(server.dsp) > 0 || select(maxfd+1, &fdset, 0, 0, select_timeout) >= 0) {
if (sn_pipe_valid) {
char buffer[1];
while (read(sn_pipe[0], buffer, sizeof(buffer)) > 0) {
@ -1260,6 +1298,7 @@ start:
case DestroyNotify:
if (e.xany.window == server.composite_manager) {
// Stop real_transparency
fprintf(stderr, "Detected compositor shutdown, restarting tint2...\n");
signal_pending = SIGUSR1;
break;
}