58 lines
1.8 KiB
Bash
Executable File
58 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# Suspends xset screensaver/DPMS blanking while any visible workspace has a
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# fullscreen window (video, game, presentation), restores normal timeouts
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# once nothing is fullscreen.
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interval="${1:-5}"
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# Single-instance lock: i3 restarts/reloads re-run our autostart exec, so
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# without this, stray duplicate loops accumulate and race each other's state.
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# Per session, so a loop lingering from a logged-out session can't block this one.
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exec 9>"/tmp/.dpms-inhibit-$(id -u)-${XDG_SESSION_ID:-0}.lock"
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flock -n 9 || exit 0
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has_fullscreen() {
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python3 - <<'EOF'
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import json, subprocess, sys
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def is_fullscreen(node):
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if node.get('window') and node.get('fullscreen_mode', 0) > 0: return True
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return any(is_fullscreen(c) for c in node.get('nodes', []) + node.get('floating_nodes', []))
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def find_ws(node, name):
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if node.get('type') == 'workspace' and node.get('name') == name: return node
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for c in node.get('nodes', []) + node.get('floating_nodes', []):
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r = find_ws(c, name)
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if r: return r
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try:
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wss = json.loads(subprocess.check_output(['i3-msg', '-t', 'get_workspaces'], stderr=subprocess.DEVNULL))
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tree = json.loads(subprocess.check_output(['i3-msg', '-t', 'get_tree'], stderr=subprocess.DEVNULL))
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for ws in wss:
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if ws.get('visible'):
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node = find_ws(tree, ws['name'])
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if node and is_fullscreen(node):
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sys.exit(0)
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except Exception:
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pass
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sys.exit(1)
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EOF
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}
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inhibited=0
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while true; do
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# our i3 is gone (logged out): don't linger into the next session
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i3-msg -t get_version >/dev/null 2>&1 || exit 0
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if has_fullscreen; then
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xset s off
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xset -dpms
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inhibited=1
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else
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if [ "$inhibited" -eq 1 ]; then
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xset s 300 300
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xset dpms 0 0 900
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inhibited=0
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fi
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fi
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sleep "$interval"
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done
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