fa0f6d7ebc7956b6e0102a00905054aab55e7099
4 Commits
| Author | SHA1 | Message | Date | |
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cproudlock
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39ede87d55 |
Give a label its own gap, its own position, and a back side
Three things the code generator could not do, each of which had someone
working around it with a control that meant something else.
The gap between a code and its caption was the quiet zone. That is the
clear space a scanner needs around the code, so closing up a caption meant
shaving the thing that makes the code readable, and the only way to get a
tight label to scan was to push the caption further away than it looked
like it should be. Quiet zone now means the code's own margin and nothing
else; gap means the distance to the caption, and adds to the quiet zone
rather than eating into it. Each stock preset carries the gap that suits it.
Position had one pair of controls and they moved the label box on the
stock. That is the fix for a printer whose origin is off, and it is not the
fix for a code sitting in the wrong place on a label - but it was the only
lever there, so it got used for both. The label div is now the media and
holds still; everything printed sits in a content wrapper that Align,
Vertical and Content X/Y move within it. The old pair kept its behaviour
and is labelled Media X/Y.
A badge card has two sides and the generator only ever emitted one page per
card. The back can now carry the same code again, a fixed block of text,
its own per-row content, or nothing. Page order is a choice because the two
kinds of printer want opposite things: interleaved for a duplex card
printer, which takes pages two at a time, and grouped for a single-sided
one whose stack gets flipped and reloaded. A row that leaves its back
column empty still gets a blank back page - a page count that varies per
row shifts every later back onto the wrong front, which prints a box of
perfectly readable cards that are all wrong.
CSV parsing and page building moved to plugins/tools/frontend/labelPages.js
(committed in
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cproudlock
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875fde9f48 |
Fix what the last round of device fixes broke, and two dips it missed
A review of |
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cproudlock
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c648bdf560 |
labels: one module knows how to draw a code, seven views stop guessing
Three core pages and four plugin pages each imported qrcode and jsbarcode directly, and each carried its own answer to the same questions: what margin, what width, which error correction, how big a module must be before a scanner can read it. The answers had already drifted - margin 0 in one place and 2 in another, width 150 against 160 - and on a label that is the difference between a sticker that scans and one that does not. frontend/src/utils/codes.js owns it now: the label-stock presets, the quiet-zone and margin defaults, CODE128 with no printed value, and the printer-resolution arithmetic that only the Tech Tools generator had. A view passes what is specific to its own label and nothing else - MachineBadge still asks for CODE39, because the badge readers predate the shop-floor scanners and decode nothing else, and that is exactly the kind of thing a call site should say out loud. views/print/qrLogo.js is folded in rather than left as a second half-shared helper that only some of the pages reached into. The check script now fails a build that imports either library outside that module. Without it this re-forks within a month: the next label page starts by copying the nearest existing one, which is how it happened the first time. Tests cover the part no amount of looking at a screen verifies - a QR that looks fine at 96 dpi on a monitor can be unreadable at 203 dpi on half-inch stock. |
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cproudlock
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f66763e6df |
tools: a Tech Tools section, starting with codes on label stock
A place for the small utilities a technician reaches for at a bench. The plugin owns no API and no tables: every tool runs entirely in the browser, so an air-gapped site gets them for free and a bad network cannot break them. Adding the next tool is a view, a route, and one entry in tools.js. First tool is a barcode/QR generator. Content is typed text, a URL, or a CSV (content,label,copies - quoted fields and an optional header both handled), so a batch of a few hundred is one paste. Label stock is adjustable in inches with five presets, and the code renders to an SVG data URI rather than a PNG: a bitmap gets downscaled to label size and smears the module edges a scanner reads, where SVG rasterizes at the printer's resolution with hard edges. It also carries the dot-grid rule that is easy to get wrong by eye. A thermal head cannot render a fraction of a dot, so a code sized off the grid gets uneven modules; pick a DPI and the page says what the current size lands on and what to use instead. The quiet zone is blank label rather than white baked into the code, so it can be tuned - and it applies to CODE128 too, which needs clear space at each end and was letting bars run into the caption. Tech Tools is the first bundled plugin that owns no schema, which two guards did not model: it belongs in the universal installer profile, and upgrade-all reports it 'no-migrations' where every plugin was assumed to report 'ok'. The migration test now asserts that status explicitly for schema-less plugins, so a table-owning plugin whose chain went missing still fails. |