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WuTofu a0037ced2b feat: add font family deletion functionality (#1919 )

## Summary

* **What is the goal of this PR?**

1. Adds font family deletion support to the font download activity so
users can remove installed font families directly from the download
list.
2. Address an issue where a font family manually deleted in the file
browser by user will show as "update" in the `FontDownloadActivity`
 

* **What changes are included?**
* Updated button hint label to show `Delete` when deletion is available.
  * Added confirmation before deleting a selected installed font family.
* Refreshed font registry in `fetchAndParseManifest` (for the second
goal above)

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**PARTIALLY**_

2026-05-11 15:45:38 +02:00

2.9 KiB

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SD Card Fonts

CrossPoint supports loading additional fonts from the SD card, including fonts with extended Unicode coverage (CJK, Cyrillic, Greek, etc.).

Installing Fonts

There are three ways to install fonts:

Option 1: Download from device (recommended)

Connect your CrossPoint reader to WiFi
Go to Settings > System > Manage Fonts
Browse available font families and tap to download
Downloaded fonts appear immediately in Settings > Reader > Font Family

Option 2: Upload via web browser

Connect your CrossPoint reader to WiFi
Open the web interface in your browser (shown on the WiFi screen)
Navigate to the Fonts tab
Upload .cpfont files using the upload form

Option 3: Manual SD card copy

Download font files from the Releases page

Copy font family folders to /.crosspoint/fonts/ on your SD card:

SD Card Root/
└── .crosspoint/
    └── fonts/
        ├── Bookerly-SD/
        │   ├── Bookerly-SD_12.cpfont
        │   ├── Bookerly-SD_14.cpfont
        │   ├── Bookerly-SD_16.cpfont
        │   └── Bookerly-SD_18.cpfont
        └── ...

Insert the SD card and power on your CrossPoint reader

Available Pre-Built Fonts

Font	Best For	Languages
Bookerly-SD	General reading	English, Western European
NotoSansExtended	Multi-script reading	European, Greek, Cyrillic, Georgian, Armenian, Ethiopic
NotoSansCJK	Chinese/Japanese/Korean	CJK + ASCII

Converting Custom Fonts

To convert your own TrueType/OpenType fonts:

Prerequisites

pip install freetype-py fonttools

Single font (one style)

python3 lib/EpdFont/scripts/fontconvert_sdcard.py \
  MyFont-Regular.ttf \
  --intervals latin-ext \
  --sizes 12,14,16,18 \
  --style regular \
  --name MyFont \
  --output-dir ./MyFont/

Multi-style font

python3 lib/EpdFont/scripts/fontconvert_sdcard.py \
  --regular MyFont-Regular.ttf \
  --bold MyFont-Bold.ttf \
  --italic MyFont-Italic.ttf \
  --bolditalic MyFont-BoldItalic.ttf \
  --intervals latin-ext \
  --sizes 12,14,16,18 \
  --name MyFont \
  --output-dir ./MyFont/

Available Unicode interval presets

Preset	Coverage
`ascii`	U+0020-U+007E (Basic Latin)
`latin-ext`	European languages (Latin + Extended-A/B)
`greek`	Greek + Extended Greek
`cyrillic`	Cyrillic + Supplement
`cjk`	CJK Unified Ideographs + Hiragana + Katakana + Fullwidth
`hangul`	Korean Hangul syllables
`builtin`	Matches built-in Bookerly coverage exactly

Combine presets with commas: --intervals latin-ext,greek,cyrillic

Install custom fonts via WiFi upload or manual SD card copy.

2.9 KiB Raw Blame History