Font Switcher Plugin for KOReader

A lightweight and powerful plugin for KOReader that allows you to quickly cycle through your system fonts using gestures or a dedicated menu in the Typeset tab. Designed specifically for reflowable documents (EPUB, FB2, etc.).

Features

• Gesture Support:

  • Assign gestures (swipes, taps, corners) to Next Font, Previous Font, or Open Font List.
  • Accessible under the General category in the Gesture Manager.

• Menu Integration:

  • Adds a "Font Switcher" entry directly into the Gereral tab in the Top Menu for quick access.

• Interactive Font List:

  • View all available system fonts in a clean, scrollable list.
  • Currently active font is automatically highlighted with a checkmark.
  • Native look and feel using standard KOReader UI components.

• Intelligent Detection:

  • Automatically identifies if a document is reflowable and supports font switching.
  • Provides helpful feedback if used on non-reflowable documents (like PDFs).

Installation

On Kobo, Kindle, etc.

1. Connect your device to your computer via USB.
2. Navigate to the KOReader plugins directory:
   • Kobo: .adds/koreader/plugins/
   • Kindle: koreader/plugins/
3. Create a new folder named fontswitcher.koplugin.
4. Copy the following files into that folder:
   • main.lua
   • _meta.lua
   • README.md
5. Eject your device safely and restart KOReader.

Usage

1. Assigning Gestures

• Open the Top Menu -> Settings (Gears icon) -> Tap and gestures.
• Go to Gesture manager.
• Choose a gesture (e.g., Two-finger swipe up).
• Select the General category.
• Find and tap Font Switcher: Next Font or Font Switcher: Font List.

2. Using the Top Menu

• Open any EPUB/reflowable book.
• Tap the top of the screen to show the menu.
• Select the Typeset (A icon) tab.
• Tap Font Switcher to access Next/Previous controls and the full list.

Technical Details

• Author: right9code
• Version: 1.0
• Compatibility: Works with all reflowable documents supported by the CreEngine (EPUB, FB2, etc.) and documents providing a setFontFace method.
• Icons: Uses native appbar.typeset and appbar.textsize icons for a seamless integrated look.