Phone cameras emit 12+ MP images (~4000 px long edge). Tesseract
on a full-resolution shot was painfully slow — minutes, not
seconds. Downscaling to 1600 px on the long edge before
worker.recognize() makes OCR 4-8× faster with no real accuracy
loss for printed text.
Implementation: createImageBitmap -> draw to a sized HTMLCanvas
-> canvas.toBlob() at JPEG 0.85. Smaller-than-1600 px inputs are
passed through unchanged. Status line briefly shows the
downscale ratio so the timing is interpretable.
With the radagast server flipped to OLLAMA_KEEP_ALIVE=-1, /api/ps
returns expires_at as year 4001 (effectively forever), which the
old code rendered as "Hot: gemma2:9b — unloads in 17500000h". Add
a 7-day threshold to formatRemaining(); anything beyond that just
shows the model name with no expiry suffix.
New "Scan image" button in the input pane header:
- Opens the phone's rear camera (capture=environment) or a desktop
file picker via a hidden <input type="file">.
- On image selected, lazy-imports tesseract.js from esm.sh — no
bundling, no Docker image growth.
- Language follows the "From" dropdown (ISO 639-2 mapping for the
30 currently-supported languages). "Auto-detect" loads the
eng+por+deu+nld pack and lets tesseract pick.
- Progress status renders below the input (engine load → OCR
percentage → "done in Xs").
- Result replaces the editor contents; existing vim bindings,
Shift-H/L nav, Ctrl-Enter translate all keep working.
First scan triggers a ~5 MB Tesseract WASM download plus the chosen
language pack (~3-10 MB). Cached by the browser after.
The vim clipboard integration was unreliable across browsers
(library "+" register broken on Firefox; custom navigator.clipboard
actions worked on Chrome but hit chip prompts and Firefox config
edge cases). The modal dropdown layer added more state than it
saved keystrokes. Pulling both back out.
What remains of the vim work:
- CodeMirror + @replit/codemirror-vim in the input buffer
(i/Esc, hjkl, word/line motions, yy/p via vim's internal
register, undo, /, :)
- Shift-H / Shift-L focus navigation across controls, including
the H/L override inside the editor so it works from any focus
- Replace Vim.map("...", "\"+...", ...) with custom Vim.defineAction
handlers calling navigator.clipboard directly. The library's "+"
register implementation doesn't reliably write on Firefox.
Limitation: only yy/Y/visual-y reach system clipboard; bare
y<motion> still uses vim's internal register.
- Flip dropdown modal: default NORMAL (j/k arrows), `/` or `i`
enters search. Listener moved to document capture phase so closed
dropdowns receive keydown on Firefox.
- y/Y/yy and visual y now route through vim's "+" register, which
copies to the system clipboard via the synchronous document
.execCommand("copy") path — no permission prompt.
- p/P also remapped to "+ register for symmetry; replaces my custom
navigator.clipboard.readText() action. Browser may still show a
permission chip on first paste; granting once makes it silent.
- Source / target / model dropdowns get modal vim-style nav:
default is native typeahead, Esc → normal mode (accent border),
j/k move selectedIndex, i and / return to search, blur resets.
Disabled on coarse-pointer devices.
Vim's default p/P pastes from its internal unnamed register, which
is useless when the text to translate lives in another app's
clipboard. Override both in normal mode to read navigator.clipboard
.readText() and insert at (after) or before the cursor.
Caveats: requires browser clipboard permission (prompted on first
use), HTTPS or localhost. Both already satisfied — finrod is served
over the wildcard TLS cert.
The previous version only handled Shift-H/L when focus was outside
the editor; inside vim normal mode they were viewport top/bottom
and required Esc+Tab to escape. Now Vim.mapCommand overrides H/L
in normal-mode context to call the same moveFocus(±1) helper, so
the shortcut works uniformly regardless of focus position.
- .cm-editor pinned to font-size 1rem so the input matches the
output pane (CodeMirror 6 defaults smaller)
- refreshLoaded(isInitial=true) on first load picks the hot model
as the dropdown default — avoids the 5-15s disk reload on the
first translation. Subsequent refreshes don't override the user's
manual selection.
- document-level Shift-H / Shift-L cycle focus across controls
(source → target → model → editor → button), suppressed when
focus is inside CodeMirror so vim's viewport H/L still work.
- Replace the plain <textarea> with a CodeMirror 6 EditorView that
has @replit/codemirror-vim attached. Loaded from esm.sh, so no
build step — finrod stays no-bundler.
- vim() extension is conditionally omitted on coarse-pointer devices
(phones, tablets) where modal editing without a hardware Esc key
is unusable and IME composition fights the keymap.
- Ctrl-/Cmd-Enter shortcut and the typing-debounce that refreshes
the "Hot:" indicator both migrate to CodeMirror's keymap and
updateListener APIs respectively.
- Editor styled to match the existing .output pane.
CHANGELOG: note under [Unreleased].
2026-06-09 16:15:36 +02:00
3 changed files with 299 additions and 16 deletions
- "Scan image" button next to the input pane: opens the phone's rear camera (or a file picker on desktop), runs OCR locally in the browser via Tesseract.js (loaded from esm.sh on first use), and replaces the editor contents with the recognised text. Language follows the "From" dropdown via an ISO 639-2 mapping; "Auto-detect" loads a common European set (`eng+por+deu+nld`). Progress status shows beneath the input ("Loading OCR engine…" → "OCR 40%" → "OCR done in 3.2s"). Zero image-size cost — same CDN pattern as CodeMirror.
- Images are downscaled to 1600 px on the long edge before OCR. A 12 MP phone photo (~4000 px) drops to ~1.3 MP, making Tesseract 4-8× faster with no real accuracy loss for printed text. Smaller-than-1600 px inputs are passed through unchanged.
### Fixed
- "Hot: …" status no longer claims "unloads in X" when the server's `keep_alive` is `-1` (Ollama returns an absurd year-4001 `expires_at`). Threshold: any expiry >7 days drops the suffix and just shows the model name.
## [0.2.0] - 2026-06-09
### Added
- Vim bindings in the input via CodeMirror 6 + `@replit/codemirror-vim` (loaded from esm.sh, no build step). Supports `i`/`Esc`, `hjkl`, word/line motions, `dd`/`yy`/`p` (vim's internal register), undo/redo, `/` search, `:` command line. Auto-disabled on touch devices (detected via `(pointer: coarse)`) where modal editing fights the virtual keyboard.
-`Shift-H` / `Shift-L` cycle focus across the page controls (source → target → model → editor → button) like `Shift-Tab` / `Tab`. Also overridden in vim normal mode (replacing vim's viewport-top/bottom default) so the same shortcut works to leave the editor.
- On page load, the model dropdown defaults to whichever model Ollama already has hot — skips the 5-15 s disk-reload pain on the first translation. After load it follows the user's manual selection.
### Changed
- Editor font-size pinned to `1rem` to match the output pane (CodeMirror 6 ships smaller by default).
## [0.1.0] - 2026-06-09
First release. Stateless translator UI that proxies streaming requests to
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