Thread: Text truncated on right side when converted to Kepubs by KoboTouchExtended
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Old 10-22-2017, 04:12 AM   #10
davidfor
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Join Date: Jul 2011
Location: Sydney, Australia
Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
Quote:
Originally Posted by franklekens View Post
Funny this should be the most recent discussion, it just happens to seem relevant to a problem I'm encountering.

I've donwloaded a Gutenberg epub (to be specific: this one http://www.gutenberg.org/ebooks/4038).
I've imported it into Calibre, and via Calibre uploaded it to my Kobo Aura One.

This Kobo is not patched or rooted or anything, I'm just working with the standard software. By the way: *I* have no "full screen" option in my reading settings anywhere. Don't know what that is.

Now when I try to open that epub in Kobo, I get the same thing: *truncated* text.

And funny thing: if I sideload the same epub onto the device manually, bypassing Caiibre, I don't get this. It's still not ideal reading (esp. the top and bottom margins are a little too small for my taste and can't be adjusted), but on the whole it's a workable epub to read on the Kobo.

This happens only with Gutenberg epubs. AFAIK, other epubs (e.g. commercial ones) that I sideload via Calibre are fine.

So does Calibre (and/or that Kobo Utilities plugin) do something to the Gutenberg epubs specifically that turns them unreadable?

I see that I have two Kobo plugins installed:
Kobo Touch Extended
Kobo Utilities

(Well, there's a bunch of other kobo things in the plugin list, but I'm assuming they're installed with the programme because I don't think I added those myself. Bit confusing always, that whole plugin menu.)
Just to be clear:

The Kobo Utilities plugin does absolutely nothing to any book. It does absolutely nothing when you send a book to the device. There are two functions that can be started automatically, but neither change anything on the device in any way. All other the functions of the plugin are started manually by the user.

The KoboTouchExtended driver does make changes to the books. The change are to transform the books into a kepub. Other than that, it can add styles, but you have to configure that. It has no code that is specific to a any possible source for a book.

Having a look at the book, it is sort of what GeoffR suggests. The problem because the first file is handled differently to the rest of the book. Kobo's specs for kepubs state that the cover file will be loaded Fixed Layout reader. They must be treating the first file in the spine as containing the cover and using this Fixed Layout reader for it. I split the file immediately after PG statement. With that, only the first page had problems, everything else was OK. Adding a cover image at the start would be another way to solve this. And it is what the kepub renderer expects.
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