i18n: add Italian (it) interface translation (#494)

* i18n: add Italian (it) interface translation

- Complete it catalog (about 2,000 entries); it and it_* locales use it
- Fonts test covers the Italian catalog; ▸ written as > like fr/es/ru, since Inter has no ▸
- Docs, attribution and ROADMAP

Co-Authored-By: Claude Opus 5.5 <[email protected]>

* it: add the labels main gained since this catalog (83), drop stale OCR keys, and coverage tests

---------

Co-authored-by: Claude Opus 5.5 <[email protected]>
Co-authored-by: Brandon Thomas <[email protected]>
This commit is contained in:
authored and GitHub committed 2026-10-09 20:55:59 -04:00
1 parent a016f88a90
commit 94f9ce69c6
8 files changed
+2181 -9

No files matched your search

+5 -5
View File
@@ -1,8 +1,8 @@
# Interface language
Choose **Menu > Edit > Preferences…** (Command-comma on macOS, Ctrl-comma elsewhere) **> Interface language** and select **Auto**, **English**, **日本語**, **简体中文**, **繁體中文**, **Русский**, **Български**, **Čeština**, **Português (Brasil)**, **Deutsch**, **Español**, **Français**, **తెలుగు**, **Magyar** or **Українська**. The change applies immediately and persists between launches. Command ids, document contents and file names are unchanged.
Choose **Menu > Edit > Preferences…** (Command-comma on macOS, Ctrl-comma elsewhere) **> Interface language** and select **Auto**, **English**, **日本語**, **简体中文**, **繁體中文**, **Русский**, **Български**, **Čeština**, **Português (Brasil)**, **Deutsch**, **Español**, **Français**, **తెలుగు**, **Magyar**, **Українська** or **Italiano**. The change applies immediately and persists between launches. Command ids, document contents and file names are unchanged.
**Auto** (the default) follows the system language: `LC_ALL`, `LC_MESSAGES` or `LANG`, then the preferred-languages list on macOS. Any Portuguese locale (`pt_BR`, `pt_PT`) uses the Brazilian catalog, any French locale (`fr`, `fr_FR`, `fr_CA`, `fr_BE`) the French one, any German locale (`de`, `de_DE`, `de_AT`, `de_CH`) the German one, and Chinese locales for Taiwan, Hong Kong and Macau (`zh_TW`, `zh_HK`, `zh_MO`, `zh-Hant`) the Traditional Chinese one; other Chinese locales (`zh`, `zh_CN`, `zh_SG`, `zh-Hans`) the Simplified Chinese one. Telugu locales (`te`, `te_IN`) use the Telugu catalog, Bulgarian locales (`bg`, `bg_BG`) the Bulgarian one, and Hungarian locales (`hu`, `hu_HU`) the Hungarian one, and Ukrainian locales (`uk`, `uk_UA`) the Ukrainian one. A system language without a catalog shows English. On Windows, **Auto** uses the Windows display languages, in preference order, when no supported locale is selected by those environment variables. Neutral `C`/`POSIX` locale values (including `C.UTF-8`) inherited from a launcher do not override the Windows display language; explicitly named supported locales such as `fr_FR.UTF-8` still do. The query asks Windows directly (`GetUserPreferredUILanguages`, through the `sys-locale` crate) without starting a process, and is cached for the process. If detection fails or the display language has no catalog, PdfCraft shows English.
**Auto** (the default) follows the system language: `LC_ALL`, `LC_MESSAGES` or `LANG`, then the preferred-languages list on macOS. Any Portuguese locale (`pt_BR`, `pt_PT`) uses the Brazilian catalog, any French locale (`fr`, `fr_FR`, `fr_CA`, `fr_BE`) the French one, any German locale (`de`, `de_DE`, `de_AT`, `de_CH`) the German one, and Chinese locales for Taiwan, Hong Kong and Macau (`zh_TW`, `zh_HK`, `zh_MO`, `zh-Hant`) the Traditional Chinese one; other Chinese locales (`zh`, `zh_CN`, `zh_SG`, `zh-Hans`) the Simplified Chinese one. Telugu locales (`te`, `te_IN`) use the Telugu catalog, Bulgarian locales (`bg`, `bg_BG`) the Bulgarian one, and Hungarian locales (`hu`, `hu_HU`) the Hungarian one, and Ukrainian locales (`uk`, `uk_UA`) the Ukrainian one, and Italian locales (`it`, `it_IT`, `it_CH`) the Italian one. A system language without a catalog shows English. On Windows, **Auto** uses the Windows display languages, in preference order, when no supported locale is selected by those environment variables. Neutral `C`/`POSIX` locale values (including `C.UTF-8`) inherited from a launcher do not override the Windows display language; explicitly named supported locales such as `fr_FR.UTF-8` still do. The query asks Windows directly (`GetUserPreferredUILanguages`, through the `sys-locale` crate) without starting a process, and is cached for the process. If detection fails or the display language has no catalog, PdfCraft shows English.
The control channel exposes the setting through `ui.set`:
@@ -10,13 +10,13 @@ The control channel exposes the setting through `ui.set`:
{"method":"ui.set","params":{"key":"language","value":"ja"}}
```
The value is `auto` or a language code (`en`, `ja`, `zh-hans`, `zh-hant`, `ru`, `bg`, `cs`, `pt-br`, `de`, `es`, `fr`, `te`, `hu`, `uk`), in any case. `ui.state` reports `language` as written in the preferences (`auto`, `en`, `ja`, `zh-hans`, `zh-hant`, `ru`, `bg`, `cs`, `pt-br`, `de`, `es`, `fr`, `te`, `hu` or `uk`). Unknown values return an error without changing the current setting. Preferences saved before this setting existed follow the system language.
The value is `auto` or a language code (`en`, `ja`, `zh-hans`, `zh-hant`, `ru`, `bg`, `cs`, `pt-br`, `de`, `es`, `fr`, `te`, `hu`, `uk`, `it`), in any case. `ui.state` reports `language` as written in the preferences (`auto`, `en`, `ja`, `zh-hans`, `zh-hant`, `ru`, `bg`, `cs`, `pt-br`, `de`, `es`, `fr`, `te`, `hu`, `uk` or `it`). Unknown values return an error without changing the current setting. Preferences saved before this setting existed follow the system language.
Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese, Traditional Chinese, Simplified Chinese, Russian, Bulgarian, German, Spanish, French, Telugu, Hungarian and Ukrainian translate them (about 1,800 entries each); Czech and Brazilian Portuguese cover the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing.
Dialogs, panels, menus, notices and history labels go through the catalog (`tl!`). Japanese, Traditional Chinese, Simplified Chinese, Russian, Bulgarian, German, Spanish, French, Telugu, Hungarian, Ukrainian and Italian translate them (about 1,800 entries each); Czech and Brazilian Portuguese cover the menus so far. Untranslated labels use English. Error details that come from the engine or the operating system are shown as they are, inside a translated frame ("操作「…」に失敗しました: …"). The command palette matches the translated label, the English label and the command id. Vertical Japanese PDF rendering is an existing viewer feature; this change does not add vertical text editing.
The Ukrainian catalog has 2,047 entries, written from the meaning of the English labels using Ukrainian computing vocabulary. Commands use infinitives; fixed-count messages use count-neutral wording. Plural-aware messages use the three [CLDR Ukrainian integer forms](https://www.unicode.org/cldr/charts/48/supplemental/language_plural_rules.html#uk): `1 сторінка`, `2 сторінки`, `5 сторінок`; 11–14 take the third form, while 21 and 22 return to the first and second. Calendar dates use genitive month names (`9 жовтня 2026`), while headings use standalone names (`Жовтень 2026`). Home recommendation cards grow to fit translated text; the toolbar search hint truncates before the shortcut, with the full label available on hover.
Japanese interface text uses BIZ UDPGothic from [craft-fonts](https://github.com/storytold/craft-fonts), an optional build input that every release includes (`CRAFT_FONTS_DIR`; see the README). A build made without it has no Japanese face, so Japanese labels show replacement boxes. Chinese is drawn with the same craft-fonts CJK faces (in Simplified Chinese the `Hans` faces come first, so a line never mixes faces with different baselines), so a character none of them has shows a replacement box (and every Chinese character does in a build without craft-fonts). Russian, Bulgarian, Czech, Brazilian Portuguese, German, Spanish, French and Hungarian need only the bundled Latin faces (tested in `tests/fonts.rs`). Hungarian uses the same one/other plural rule as English: 1 is singular, and every other count — including 0 — is the other form. After a numeral the noun stays singular (`1 oldal`, `2 oldal`). Telugu is drawn with a craft-fonts `Telu` face (Noto Sans Telugu, kept in the web build too), whose conjuncts egui shapes; a build without one shows Telugu labels as replacement boxes, and the release-pinned craft-fonts input has no Telugu face yet.
Japanese interface text uses BIZ UDPGothic from [craft-fonts](https://github.com/storytold/craft-fonts), an optional build input that every release includes (`CRAFT_FONTS_DIR`; see the README). A build made without it has no Japanese face, so Japanese labels show replacement boxes. Chinese is drawn with the same craft-fonts CJK faces (in Simplified Chinese the `Hans` faces come first, so a line never mixes faces with different baselines), so a character none of them has shows a replacement box (and every Chinese character does in a build without craft-fonts). Russian, Bulgarian, Czech, Brazilian Portuguese, German, Spanish, French, Hungarian and Italian need only the bundled Latin faces (tested in `tests/fonts.rs`). Hungarian uses the same one/other plural rule as English: 1 is singular, and every other count — including 0 — is the other form. After a numeral the noun stays singular (`1 oldal`, `2 oldal`). Telugu is drawn with a craft-fonts `Telu` face (Noto Sans Telugu, kept in the web build too), whose conjuncts egui shapes; a build without one shows Telugu labels as replacement boxes, and the release-pinned craft-fonts input has no Telugu face yet.
There is no right-to-left interface language yet. File names and document titles in Arabic or Hebrew are drawn with a craft-fonts `Arab` face when the build input has one; on desktop, a character no embedded face has is drawn with one font already installed on the machine (`PDFCRAFT_SYSTEM_FONTS=0` turns this off). The tab strip, the recent-files list and Properties show such names in display order; other places (bookmarks, comments, search results) have the glyphs but may order mixed-direction text wrongly.