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The hyprcosmic profile disables cosmic-panel, and COSMIC's power applet lives in that panel. Nothing replaced it, so the session had no logout, reboot or shutdown anywhere in it: the only way out was `systemctl reboot` typed into a terminal, which also meant every login-time change cost a reboot to test. hyprcosmic-powermenu is a rofi menu offering lock, suspend, log out, reboot and shut down. It is reached two ways -- $mainMod SHIFT E and a button at the right end of waybar -- and both run the same script, so a click cannot bypass the confirmation a keypress gets. Logging out calls com.system76.CosmicSession.Exit, which is the method the panel applet used and the only one that stops the session's clients in order rather than pulling the compositor out from under them. Reboot and poweroff go straight to systemd; polkit already authorises both for an active local session without a prompt, verified with pkcheck, so no pkexec is involved. Lock uses loginctl, which cosmic-greeter is listening for. Confirmation is asked only for the three that end the session. Lock and suspend undo themselves with a keypress, so a prompt there is pure friction; the other three throw away everything unsaved and are one keystroke away at all times. "No" is listed first so it is the row already selected. The menu entries are plain words rather than Nerd Font glyphs. The bar icon is the only glyph involved, and it comes through generate-config.py, whose whole purpose is that no Private Use Area character is ever typed by hand -- U+F011, confirmed present in the installed JetBrainsMono Nerd Font. rules.css names every module id explicitly, so #custom-power had to be added there too or the button would have rendered with no pill behind it. The script sits under config/bin/ rather than a new top-level directory so that install-assets.sh's audit still covers it: that check refuses to run unless every file under config/ is classified, which is what stops a new file from being silently left uninstalled.
106 lines
4.4 KiB
Bash
Executable File
106 lines
4.4 KiB
Bash
Executable File
#!/usr/bin/bash
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#
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# Power menu for a HyprCosmic session: lock, suspend, log out, reboot, shut down.
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#
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# WHY THIS EXISTS
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# ---------------
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# Stock COSMIC puts all of these behind the power applet in cosmic-panel.
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# HyprCosmic replaces the panel with waybar, so that applet never starts and the
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# session had no exit at all -- not even a logout -- short of `systemctl reboot`
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# typed into a terminal. This is the exit. It is reached from a keybinding and
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# from the bar, and both run this same script so the two can never disagree.
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#
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# Logging out goes through cosmic-session's own D-Bus interface rather than
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# killing anything. That is the method the panel applet called, and it is the
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# only one that lets the session stop its clients in order instead of pulling
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# the compositor out from under them; see `com.system76.CosmicSession.Exit` in
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# cosmic-session/src/service.rs.
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#
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# Reboot and poweroff go to systemd directly. polkit already authorises both for
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# an active local session without a prompt, which is why no pkexec is involved.
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#
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# NO GLYPHS HERE, DELIBERATELY
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# ----------------------------
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# Every entry is a plain word. Nerd Font icons live in the Private Use Area,
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# where they are indistinguishable from each other in a diff and are silently
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# destroyed by anything that retypes rather than copies them. waybar's power
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# icon is the only glyph in this feature and it comes from generate-config.py,
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# which checks each codepoint against the installed font.
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set -uo pipefail
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SESSION_DEST=com.system76.CosmicSession
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SESSION_PATH=/com/system76/CosmicSession
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command -v rofi >/dev/null 2>&1 || {
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printf 'hyprcosmic-powermenu: rofi is not installed\n' >&2
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exit 1
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}
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# Errors go to a rofi dialog, not just stderr. The two ways in are a keybinding
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# and a bar click, and neither has a terminal attached to read stderr from.
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fail() {
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printf 'hyprcosmic-powermenu: %s\n' "$*" >&2
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rofi -e "$*" >/dev/null 2>&1 || :
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exit 1
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}
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# No theme arguments, so ~/.config/rofi/config.rasi applies and this matches the
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# launcher. Icons off because these entries have none and the reserved space
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# would sit there empty.
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#
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# -no-custom is what stops a typed line from being returned as if it were a
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# choice: without it, Return on an empty filter hands back whatever was typed,
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# and the case below would fall through to no branch at all. With it, anything
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# that is not one of the offered entries is refused.
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menu() {
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local prompt="$1"
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shift
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printf '%s\n' "$@" | rofi -dmenu -i -no-custom -no-show-icons -p "$prompt"
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}
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# Only for the three that end the session. Locking and suspending undo
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# themselves with a keypress, so a confirmation there is pure friction; logging
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# out, rebooting and shutting down each throw away every unsaved thing on the
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# desktop, and this menu is one keystroke away at all times.
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#
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# "No" is listed first so that it is the selected row when the dialog opens.
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confirm() {
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local answer
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answer="$(menu "$1?" "No" "Yes")" || return 1
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[[ "$answer" == "Yes" ]]
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}
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logout() {
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command -v busctl >/dev/null 2>&1 ||
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fail "busctl is not installed, so the session cannot be asked to exit"
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busctl --user call "$SESSION_DEST" "$SESSION_PATH" "$SESSION_DEST" Exit && return 0
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# Reaching here means cosmic-session is not answering on the bus. Say so
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# rather than silently doing nothing: being unable to leave the session is
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# the exact problem this script was written for, so a dead end here is
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# worse than a blunt instrument. loginctl is that blunt instrument, and it
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# is named explicitly so the choice to use it is the user's.
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fail "cosmic-session did not answer on D-Bus.
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To force the session to end, run:
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loginctl terminate-session ${XDG_SESSION_ID:-\$XDG_SESSION_ID}"
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}
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choice="$(menu "Power" "Lock" "Suspend" "Log out" "Reboot" "Shut down")" || exit 0
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case "$choice" in
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"Lock") exec loginctl lock-session ;;
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"Suspend") exec systemctl suspend ;;
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"Log out") confirm "Log out" && logout ;;
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"Reboot") confirm "Reboot" && exec systemctl reboot ;;
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"Shut down") confirm "Shut down" && exec systemctl poweroff ;;
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"") ;;
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*) fail "unrecognised choice: ${choice}" ;;
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esac
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# Reached only by answering "No" to a confirmation, or dismissing it. The four
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# branches that act replace this process outright, and `fail` exits on its own,
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# so nothing else arrives here -- and changing your mind is not a failure.
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exit 0
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