Cybook t4b Format Specification

The new epub thumbnail files (.epub.thn) are what Bookeen calls t4b files. They are very similar to the older t2b thumbnail files they were using in earlier versions of the Cybook firmware. As the name suggests instead of using 2 bits to represent color values 4 bits are now used. This increases the number of […]


A while back I made a post about ASCIIizing Text. With it was a simple python application that would convert Unicode characters to ASCII equivalents. It doesn’t do a basic conversion but also Latinizes the characters when they are outside of the ASCII range. The uni2ascii package I made has a few short comings I’ve […]

Niw Markdown Editor

For the past three weeks I’ve been working on an editor for working with plain text files and making it easy to add markdown syntax to them. My main goal is to make it easier to format the large number of ebooks I have. Almost all of them are plain text files. It’s a python […]

QPlainTextEdit With In Line Spell Check

***Update: Simplified Highlighter.highlightBlock function One thing Qt lacks is an integrated spell check in the text entry components. For a project I’m working on this is necessary. Using python-enchant and the QSyntaxHighlighter I was able to implement this functionality. Here is how to add an in line spell check support to a QPlainTextEdit. The SpellTextEdit’s […]

ASCIIize Text

One pet peeve of I have with my Cybook Gen 3 is its inability to properly display unicode characters in plain text files. I don’t need anything fancy like Japanese characters just simple things like “ and ” (as opposed to ” and “). To solve this problem I’ve been thinking about adding an –asciize […]

History Drop Down With Model

Following is a bit of python code that illustrates how to create a QComboBox that attaches to a model for listing history items. The main features of this code are items entered in the text area of the combo are added to the history. Selected items and items entered that already appear in the combo […]

QCompleter and Comma-Separated Tags

Here is a python script demonstrating how to use QCompleter to complete multiple tags in a QLineEdit. A few features of this script are: removing tags from the drop down that already appear in the QLineEdit, caching the tags, and inserting a , after completion to ease adding more tags. There are a few parts […]

Calibre Week in Review

Not much happened this week. A few bug fixes and a new output format, RTF. It produces acceptable results. It also embeds images into the file. The output could use some tweaking, but this will come with time. The only caveat is the output is ascii only. This is to keep compatibility with Cailbre’s RTF […]