Koreader is a document reader that supports PDF, DJVU, EPUB, FB2, HTML and much more, running on Kindle, Kobo and Android devices.
Installation:
https://github.com/koreader/koreader/wiki
Start Koreader with the last opened file: When in Koreader's File Manager click on the top. A menu will open. Check "Start with last opened file".
Make Defaults:
In some parts of the menu within a book in Koreader you can do a long tap on an entry.
This will not submit the corresponding event but will pop up a question like "Set [whatever you clicked] as a default for [whatever option group this belongs to]".
You can e.g. set the default font, font size, font-weight and so on for new books (books that are not in history right now).
Right now this will not work with menus that use "decrease/increase" instead of the actual values.
Other Screen gestures (some gestures are not recognized by all devices, and some settings are not available for all neither):
Two finger Swipe up/down: change the light settings
Two finger Swipe left: open bookmarks
Two finger swipe right: open TOC (table of content)
Long tap on history entry: delete entry from history. If you reopen this book it will be starte from beginning with default settings
Long tap on file manager entry: file operations (e.g. copy/delete...)
Long tap on mini bar: open "Go to" menu
Diagonal Swipe: take screenshot
Some important files inside the Koreader directory:
crash.log: In case Koreader crashed you can find some info here that might be important for the developers to fix this issue.
/history (folder): This folder contains all the settings for open books. You can also use this to check for highlights that you did within the book.
/screenshots (folder): This will contain all screenshots done by a diagonal swipe. TODO: Explain how to use these files since they are not in a usual format like GIF.
defaults.lua: All default settings.
You can do changes here, but if you install a new version of Koreader this file will get overwritten. Because of that you can copy this file to a new file called defaults.persistent.lua and do changes there. This file will not be overwritten, and all changes done there will be processed after the ones in defaults.lua.
These files are the right place to create tapzones.
A few personal favs for these default settings:
DCREREADER_TWO_PAGE_THRESHOLD = 0
This will make sure that you will get two pages in landscape mode (epubs).
DMINIBAR_ALL_AT_ONCE = true
This will show all available info in the mini bar.
DGESDETECT_DISABLE_DOUBLE_TAP = false
This way you will be able to double-click (per default in the upper left and right corner) to jump to the previous/next chapter (if the book has a TOC).