Classroom_Desktop/docs/backlog.md

Backlog — 0.3.0 and later

Recorded after hands-on testing of 0.2.6.1 in September 2026. None of this is in 0.2.6.2 to 0.2.6.4: 0.2.6.2 is limited to picture printing, the Presentations memory failure and the settings lockdown, 0.2.6.3 to the black-and-white preview and Print image, and 0.2.6.4 to temporary workspace restore (the two items that were here about links and sign-in retention are answered in wonder-ink.md). Each item says what was observed, so whoever picks it up starts from the evidence.

Wonder Ink

• An interface like Chrome's, visibly the classroom's. Familiar tabs and back/forward/reload, without an address bar, new-tab button or anything that takes a teacher somewhere the lesson did not. The 0.2.6.1 tab strip is a step towards it, not the design.
• The PDF viewer's own Download button. It saves a copy, which the download handler then opens as another worksheet tab. Remove it, or intercept the download from a worksheet tab so it does nothing visible. (0.2.2 already skips re-opening a save from a worksheet tab — see from_worksheet in on_download — so check first which route it now takes.)
• One Print, not two. A worksheet tab has the viewer's printer icon and Wonder Ink's Print; both now open the same preview, but a teacher sees two buttons. One teacher-facing workflow.
• Readable worksheet names. Tabs show the downloaded file's name, which for many worksheets is a long generated prefix. Strip it, or take the name from the PDF's own title.
• Print image and CSS background pictures (from 0.2.6.3). The engine's hit test does not call a CSS background a picture, so right-click there offers only Print page. Only worth doing if Sunday's testing finds Wonder Ink's site draws artwork that way; the lab has no account to tell. See wonder-ink.md, Print image.
• The clipboard after Print image (from 0.2.6.3). It is put back, but owned by Wonder Ink afterwards, so text copied elsewhere before is gone once Wonder Ink closes — there is no clipboard manager in the session. Measured, and judged smaller than leaving the picture there.
• A speaker on the tab that is playing sound (QWebEnginePage.recentlyAudible).
• A picture in its own tab, in a room above 100% (seen testing 0.2.6.4). Page zoom is the room's UI_SCALE, and the engine's picture viewer takes it too, so at 200% a slide opened from a lesson is shown twice its size with scrollbars rather than fitted to the window, as Chrome shows it. Printing is unaffected.
• Staying signed in, if WonderInk ever issues a real session token. Today its sign-in is the teacher's email and password in a Basic-auth cookie (measured, 0.2.6.4), so keeping it would mean keeping a password; Wonder Ink does not. Worth asking WonderInk for a server-issued token that can be revoked; until then, closing Wonder Ink signs the teacher out, and only the recent tabs come back.
• Workspace time as a room setting, if two hours turns out wrong for some room: IDLE_LIMIT_SECONDS in classroom_wonderink_workspace.py is the one place, and a device.conf key would be a small change.
• The site's sluggishness, where it is ours. Measured in 0.2.6.1: Wonder Ink and Chrome take the same time (about 2.9 s cold) and the site is the weight — 119 – 160 requests, 3.2 MB, the Google Maps API loaded twice. Ours to look at: whether a classroom's QtWebEngine has its GPU (classroom-wonderink --diagnose on the machines), and the page shell being revalidated on every warm load (62 – 87 ms).
• The browser is scaled twice under Plasma (dpr 2.25 at 150%): classroom-browser forces UI_SCALE on a Chrome that already follows the compositor. Deliberately left in 0.2.6.x because teachers know that size, and Wonder Ink was matched to it. Decide once, for both.

Presentations

• A normal, maximisable application instead of the small floating library window.
• Consistently sized tiles in a responsive grid.
• No unnecessary internal scrollbars or stretched layouts. 0.2.6.2 had to give a row extra height by hand when a card carries the memory-failure message; the layout should size to its cards.
• Keep the window's size and position when importing a presentation or changing a cover.
• Click the slide to advance.
• Hide the pointer after a moment of stillness while presenting, and bring it back on movement.
• Keep the keyboard controls, and never advance when a playback control itself is clicked.
• Remote control of a presentation — later than 0.3.0.

The launcher and Parent Call

• Remove the subtitles under DVD and Presentations on the launcher.
• Parent Call appears among the ordinary applications for a moment and then disappears, which looks like a crash. Keep it reachable through its background or notification route without it flashing up as a window.

The settings lockdown

• A notification's Configure button still shows, and opens a small "module disabled" window (0.2.6.2). Hiding it needs a change to Plasma's notification applet, not configuration — revisit if Plasma gains a Kiosk key for it.
• The settings-module list is per Plasma release. tools/lab/converged-check fails when a new one appears; the list in config/plasma/xdg/kdeglobals then needs the new name.