ekklesiaandClaude Opus 5
f8ddfbe345
Pressing DVD now enters DVD mode rather than opening VLC. VLC is still the backend, because its dvdnav module is what decodes disc menus and nothing else on Debian does that reliably, but nothing a person can see or press belongs to it any more. classroom-dvd-session owns the whole thing. It puts a full-screen black layer-shell surface up the moment the button is pressed, starts VLC behind it, and drops it once playback is actually on screen — so the harsh cut from wallpaper to VLC's black window is gone, and no partial VLC window or reserved dock strip is ever visible. A deadline drops the surface regardless, because DVD mode must never leave a black screen with nothing behind it. The controls are a classroom bar on the overlay layer, the one layer sway draws above a fullscreen window. It slides up when the pointer reaches the bottom of the screen and hides again shortly after it leaves. It is drawn from the dock's own stylesheet at the room's UI scale, so it is the same surface, the same radius and the same white icons. While hidden it only accepts the pointer in a thin strip along the bottom edge, so a click on a disc menu goes to the disc. The bar reaches VLC through an HTTP interface on loopback behind a password generated per session, sending hotkey *actions* by name. That is what makes the next part possible. All 108 hotkeys VLC 3.0.23 defines are unset, then Space, Esc and the arrow keys plus Enter are bound. Crop, aspect ratio, subtitles, audio tracks and deinterlacing are no longer reachable by pressing a key at random, and the arrow keys no longer change VLC's volume — the television owns volume, and CEC will own it properly later. Esc quits instead of leaving fullscreen. There is nothing to leave, and leaving it was what stranded people on a black VLC window. Close, Eject and Esc all ask VLC to quit and escalate to SIGTERM then SIGKILL if it does not; when VLC exits by any route, including a crash, the session ends and the classroom desktop comes back. Verified against VLC 3.0.23 on Trixie: every argument accepted, every control action accepted over the control interface, a wrong password refused, and quit exiting cleanly. The surfaces were rendered under a headless sway and screenshotted to check the bar against the dock. Co-Authored-By: Claude Opus 5 <[email protected]>
93 lines
2.9 KiB
Bash
Executable File
93 lines
2.9 KiB
Bash
Executable File
#!/bin/bash
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set -e
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if ! id classroom >/dev/null 2>&1; then
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adduser \
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--disabled-password \
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--gecos "" \
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classroom
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fi
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cat > /home/classroom/.bash_profile <<'PROFILE'
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if [ -z "$WAYLAND_DISPLAY" ] && [ "${XDG_VTNR:-}" = "1" ]; then
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exec sway -c /etc/ekklesia-classroom/sway/config
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fi
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PROFILE
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chown classroom:classroom /home/classroom/.bash_profile
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chmod 0644 /home/classroom/.bash_profile
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chmod 0755 /usr/local/bin/classroom-browser
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chmod 0755 /usr/local/bin/classroom-window
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chmod 0755 /usr/local/bin/classroom-dvd
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chmod 0755 /usr/local/bin/classroom-dvd-session
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chmod 0755 /usr/local/bin/classroom-dvd-css-setup
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chmod 0755 /usr/local/bin/classroom-notify-test
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chmod 0755 /usr/local/bin/classroom-notifications
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chmod 0755 /usr/local/bin/classroom-chrome-setup
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chmod 0755 /usr/local/bin/classroom-provision
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# Reading the optical drive needs group cdrom. Takes effect at the next
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# login, which the OTA reboot provides.
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if getent group cdrom >/dev/null 2>&1; then
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adduser classroom cdrom >/dev/null 2>&1 || true
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fi
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if [ ! -f /etc/ekklesia-classroom/device.conf ]; then
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cat > /etc/ekklesia-classroom/device.conf <<'CONFIG'
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# Ekklesia Classroom device configuration
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UPDATE_URL=https://updates.riverofglorymn.org
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CHANNEL=stable
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# Set to true on classrooms that have a DVD drive.
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DVD_ENABLED=false
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# Size of the dock, clock and notifications, 0.8 to 1.5.
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# Larger rooms and larger TVs want a larger number.
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UI_SCALE=1.0
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CONFIG
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chmod 0644 /etc/ekklesia-classroom/device.conf
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fi
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# Make the settings discoverable on classrooms installed before they
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# existed. Both defaults are what those rooms already do, so nothing
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# about their behaviour changes.
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if ! grep -q '^DVD_ENABLED=' /etc/ekklesia-classroom/device.conf; then
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cat >> /etc/ekklesia-classroom/device.conf <<'CONFIG'
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# Set to true on classrooms that have a DVD drive.
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DVD_ENABLED=false
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CONFIG
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fi
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if ! grep -q '^UI_SCALE=' /etc/ekklesia-classroom/device.conf; then
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cat >> /etc/ekklesia-classroom/device.conf <<'CONFIG'
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# Size of the dock, clock and notifications, 0.8 to 1.5.
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# Larger rooms and larger TVs want a larger number.
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UI_SCALE=1.0
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CONFIG
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fi
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systemctl daemon-reload || true
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systemctl enable ekklesia-classroom-update.timer || true
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systemctl start ekklesia-classroom-update.timer || true
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# Google Chrome, and the DVD codecs when the room has a drive, are
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# fetched by the provisioning service at the next boot.
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#
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# Deliberately enabled but not started here. It cannot run during this
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# script anyway, because dpkg holds the apt lock throughout. Starting it
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# straight afterwards would race the reboot that an OTA update performs
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# the moment this install finishes, and an apt run killed by that reboot
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# leaves dpkg half-configured. Every OTA reboots, so waiting for the next
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# boot costs nothing and cannot corrupt anything.
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#
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# A failure there must never fail this installation.
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systemctl enable ekklesia-classroom-provision.service || true
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exit 0
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