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i3bar: suspend the child when bars are fully obscured

This commit is contained in:
Alexander Monakov 2015-01-09 01:18:23 +03:00 committed by Michael Stapelberg
parent 29a832a160
commit f28ce227e3
2 changed files with 44 additions and 0 deletions
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1
i3bar/include/outputs.h
View File

@ -40,6 +40,7 @@ struct i3_output {
char* name; /* Name of the output */
bool active; /* If the output is active */
bool primary; /* If it is the primary output */
bool visible; /* If the bar is visible on this output */
int ws; /* The number of the currently visible ws */
rect rect; /* The rect (relative to the root-win) */

43
i3bar/src/xcb.c
View File

@ -481,6 +481,39 @@ void handle_button(xcb_button_press_event_t *event) {
free(buffer);
}
/*
* Handle visibility notifications: when none of the bars are visible, e.g.
* if windows are in full-screen on each output, suspend the child process.
*
*/
static void handle_visibility_notify(xcb_visibility_notify_event_t *event) {
bool visible = (event->state != XCB_VISIBILITY_FULLY_OBSCURED);
int num_visible = 0;
i3_output *output;
SLIST_FOREACH (output, outputs, slist) {
if (!output->active) {
continue;
}
if (output->bar == event->window) {
if (output->visible == visible) {
return;
}
output->visible = visible;
}
num_visible += output->visible;
}
if (num_visible == 0) {
stop_child();
} else if (num_visible == visible) {
/* Wake the child only when transitioning from 0 to 1 visible bar.
* We cannot transition from 0 to 2 or more visible bars at once since
* visibility events are delivered to each window separately */
cont_child();
}
}
/*
* Adjusts the size of the tray window and alignment of the tray clients by
* configuring their respective x coordinates. To be called when mapping or
@ -945,6 +978,10 @@ void xcb_chk_cb(struct ev_loop *loop, ev_check *watcher, int revents) {
}
switch (type) {
case XCB_VISIBILITY_NOTIFY:
/* Visibility change: a bar is [un]obscured by other window */
handle_visibility_notify((xcb_visibility_notify_event_t *)event);
break;
case XCB_EXPOSE:
/* Expose-events happen, when the window needs to be redrawn */
redraw_bars();
@ -1461,6 +1498,12 @@ void reconfig_windows(bool redraw_bars) {
* */
values[2] = XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT;
if (config.hide_on_modifier == M_DOCK) {
/* If the bar is normally visible, catch visibility change events to suspend
* the status process when the bar is obscured by full-screened windows. */
values[2] |= XCB_EVENT_MASK_VISIBILITY_CHANGE;
walk->visible = true;
}
if (!config.disable_ws) {
values[2] |= XCB_EVENT_MASK_BUTTON_PRESS;
}