[Device Plugin] Kobo Touch Extended Driver - Page 207

chaley · 12-16-2024, 09:33 AM

Quote:

Originally Posted by Runnerbeen

I've rolled back to version 3.7.0 and the issue still remains ie there is very little and sometimes no space after an italicised word. Justification settings are set to off.

This might be a reader problem instead of a plugin problem. Spaces after italics can seem to disappear depending on the font and whether any kerning is happening. For example, this string:

PHP Code:


			
[SIZE="3"][FONT="Tahoma"]The expression [I]([/I] 'abc' [I])[/I][/FONT][/SIZE]

when rendered by this forum produces this.

Quote:

The expression ( 'abc' )

The space after the opening parenthesis is effectively gone and the space before the closing parenthesis seems too large. Italicizing the space can make it worse.

Without the italics we see

Quote:

The expression ( 'abc' )

The spaces are very apparent.

Runnerbeen · 12-16-2024, 09:47 AM

Quote:

Originally Posted by chaley

This might be a reader problem instead of a plugin problem. Spaces after italics can seem to disappear depending on the font and whether any kerning is happening. For example, this string:

PHP Code:


			
[SIZE="3"][FONT="Tahoma"]The expression [I]([/I] 'abc' [I])[/I][/FONT][/SIZE]

when rendered by this forum produces this.

The space after the opening parenthesis is effectively gone and the space before the closing parenthesis seems too large. Italicizing the space can make it worse.

Without the italics we see

The spaces are very apparent.

Thank you for that explanation. Is there anything I can do to fix this? TY

chaley · 12-16-2024, 10:14 AM

Quote:

Originally Posted by Runnerbeen

Thank you for that explanation. Is there anything I can do to fix this? TY

Assuming the problem is in the device's typography, one way I can think of is to use a larger space before and after italics, such as an M space or an N space. Here are some examples using the same string as above:

M space: The expression ( 'abc' )
N space: The expression ( 'abc' )
Normal space: The expression ( 'abc' )

Another possibility: sometimes a rendering engine treats non-breaking spaces differently from standard spaces, not changing their widths when it would change the width of a normal space.

This site discusses unicode (and thus HTML) space characters.

Of course I might be entirely wrong and the problem is elsewhere.

nikosan · 12-16-2024, 03:27 PM

Quote:

Originally Posted by Runnerbeen

Thank you for that explanation. Is there anything I can do to fix this? TY

Could it be an issue with how the font was installed? I've seen where if the true "italic" style of a font isn't installed, the reader will just angle the "regular" style, which can make the italic word look like it's closer to the next word. You might try re-installing the Literata font on your reader, and make sure each version of the font files is named correctly, e.g.: [FontName].ttf, [FontName]-Bold.ttf, [FontName]-BoldItalic.ttf, and [FontName]-Italic.ttf.

(Also, Literata Book works better for adjustable line-spacing than Literata 3.0. You can get the OTF of Literata Book at FontSquirrel.)

mrbt · 12-16-2024, 03:59 PM

Let me show you an example of the missing space.

Original epub:
Jenny. The

3.7.1:
Jenny. The

3.7.2:
Jenny.The

So before the last release, the space after the dot get an own group.
In the last release, you drop that space without making a group of it.

hengyu · 12-16-2024, 10:09 PM

Quote:

Originally Posted by Runnerbeen

Thank you for that explanation. Is there anything I can do to fix this? TY

If it's really something to do with the rendering, I wonder if

webkitTextRendering=geometricPrecision

or
webkitTextRendering=optimizelegibility

in "Kobo eReader.conf" could make any difference?

DNSB · 12-17-2024, 12:25 AM

I did some playing with the issue with kepub converted epubs and missing spaces when italics were used.

Here's the original epub file using span, naked i, naked em and i and em with a class:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
</head>

<body>
  <p>Jenny. <span class="italic">The </span></p>

  <p>Jenny. <i>The </i></p>

  <p>Jenny. <i class="italic">The </i></p>

  <p>Jenny. <em>The </em></p>

  <p>Jenny. <em class="italic">The </em></p>
</body>
</html>

and here is the result of converting to kepub with the 3.7.2 code version of Kepub Output:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
  <style type="text/css" class="kobostylehacks">div#book-inner { margin-top: 0; margin-bottom: 0;}</style>
</head>

<body>
  <div id="book-columns">
    <div id="book-inner">
      <p><span class="koboSpan" id="kobo.1.1">Jenny. </span><span class="italic"><span class="koboSpan" id="kobo.1.2">The </span></span></p>

      <p><span class="koboSpan" id="kobo.2.1">Jenny. </span><i><span class="koboSpan" id="kobo.2.2">The </span></i></p>

      <p><span class="koboSpan" id="kobo.3.1">Jenny. </span><i class="italic"><span class="koboSpan" id="kobo.3.2">The </span></i></p>

      <p><span class="koboSpan" id="kobo.4.1">Jenny. </span><em><span class="koboSpan" id="kobo.4.2">The </span></em></p>

      <p><span class="koboSpan" id="kobo.5.1">Jenny. </span><em class="italic"><span class="koboSpan" id="kobo.5.2">The </span></em></p>
    </div>
  </div>
</body>
</html>

and the last version which using the KoboTouchExtended driver to send the book with conversion on the fly to kepub.epub:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
  <link rel="stylesheet" href="../../kte-css/stylehacks.css" type="text/css"/>
</head>

<body>
  <div id="book-columns">
    <div id="book-inner">
      <p><span class="koboSpan" id="kobo.2.1">Jenny.</span><span class="italic"><span class="koboSpan" id="kobo.3.1">The</span></span></p>

      <p><span class="koboSpan" id="kobo.5.1">Jenny.</span><i><span class="koboSpan" id="kobo.6.1">The</span></i></p>

      <p><span class="koboSpan" id="kobo.8.1">Jenny.</span><i class="italic"><span class="koboSpan" id="kobo.9.1">The</span></i></p>

      <p><span class="koboSpan" id="kobo.11.1">Jenny.</span><em><span class="koboSpan" id="kobo.12.1">The</span></em></p>

      <p><span class="koboSpan" id="kobo.14.1">Jenny.</span><em class="italic"><span class="koboSpan" id="kobo.15.1">The</span></em></p>
    </div>
  </div>
</body>
</html>

It's a bit odd that kepubify and the Kepub Output conversion calibre plugin maintain the spaces but the KoboTouchExtended driver does not.

Runnerbeen · 12-17-2024, 03:18 AM

Quote:

Originally Posted by nikosan

Could it be an issue with how the font was installed? I've seen where if the true "italic" style of a font isn't installed, the reader will just angle the "regular" style, which can make the italic word look like it's closer to the next word. You might try re-installing the Literata font on your reader, and make sure each version of the font files is named correctly, e.g.: [FontName].ttf, [FontName]-Bold.ttf, [FontName]-BoldItalic.ttf, and [FontName]-Italic.ttf.

(Also, Literata Book works better for adjustable line-spacing than Literata 3.0. You can get the OTF of Literata Book at FontSquirrel.)

Thank you, I was using the variable version of the font. I removed this and installed the four separate fonts as mentioned above and it looks much better now though there are some slightly odd spacing issues here and there. I’ll try the Book version too but I quite like the spacing of the TT version.

Runnerbeen · 12-17-2024, 03:20 AM

Quote:

Originally Posted by hengyu

If it's really something to do with the rendering, I wonder if

webkitTextRendering=geometricPrecision

or
webkitTextRendering=optimizelegibility

in "Kobo eReader.conf" could make any difference?

I should have mentioned before that I added the geometric precision code into the config file. In the end removing the variable font I was using and installing the four separate fonts seems to have worked though there still seems to be some odd and uneven spacing issues in places. Thank you

fedett92 · 12-18-2024, 02:36 AM

Quote:

Originally Posted by DNSB

I did some playing with the issue with kepub converted epubs and missing spaces when italics were used.

Here's the original epub file using span, naked i, naked em and i and em with a class:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
</head>

<body>
  <p>Jenny. <span class="italic">The </span></p>

  <p>Jenny. <i>The </i></p>

  <p>Jenny. <i class="italic">The </i></p>

  <p>Jenny. <em>The </em></p>

  <p>Jenny. <em class="italic">The </em></p>
</body>
</html>

and here is the result of converting to kepub with the 3.7.2 code version of Kepub Output:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
  <style type="text/css" class="kobostylehacks">div#book-inner { margin-top: 0; margin-bottom: 0;}</style>
</head>

<body>
  <div id="book-columns">
    <div id="book-inner">
      <p><span class="koboSpan" id="kobo.1.1">Jenny. </span><span class="italic"><span class="koboSpan" id="kobo.1.2">The </span></span></p>

      <p><span class="koboSpan" id="kobo.2.1">Jenny. </span><i><span class="koboSpan" id="kobo.2.2">The </span></i></p>

      <p><span class="koboSpan" id="kobo.3.1">Jenny. </span><i class="italic"><span class="koboSpan" id="kobo.3.2">The </span></i></p>

      <p><span class="koboSpan" id="kobo.4.1">Jenny. </span><em><span class="koboSpan" id="kobo.4.2">The </span></em></p>

      <p><span class="koboSpan" id="kobo.5.1">Jenny. </span><em class="italic"><span class="koboSpan" id="kobo.5.2">The </span></em></p>
    </div>
  </div>
</body>
</html>

and the last version which using the KoboTouchExtended driver to send the book with conversion on the fly to kepub.epub:

Code:

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
  <title>Kepub Italics Space Test</title>
  <link href="../Styles/stylesheet.css" type="text/css" rel="stylesheet"/>
  <link rel="stylesheet" href="../../kte-css/stylehacks.css" type="text/css"/>
</head>

<body>
  <div id="book-columns">
    <div id="book-inner">
      <p><span class="koboSpan" id="kobo.2.1">Jenny.</span><span class="italic"><span class="koboSpan" id="kobo.3.1">The</span></span></p>

      <p><span class="koboSpan" id="kobo.5.1">Jenny.</span><i><span class="koboSpan" id="kobo.6.1">The</span></i></p>

      <p><span class="koboSpan" id="kobo.8.1">Jenny.</span><i class="italic"><span class="koboSpan" id="kobo.9.1">The</span></i></p>

      <p><span class="koboSpan" id="kobo.11.1">Jenny.</span><em><span class="koboSpan" id="kobo.12.1">The</span></em></p>

      <p><span class="koboSpan" id="kobo.14.1">Jenny.</span><em class="italic"><span class="koboSpan" id="kobo.15.1">The</span></em></p>
    </div>
  </div>
</body>
</html>

It's a bit odd that kepubify and the Kepub Output conversion calibre plugin maintain the spaces but the KoboTouchExtended driver does not.

I'm also having the same issue.
Sending a converted on-the-fly kepub via calibre to my Kobo Libra 2 delete the spaces before italic words!
Versione 3.7.2

Runnerbeen · 12-18-2024, 12:04 PM

I have rolled back to version 3.7.0 and edited a book using Sigil, converted it and now the italic issue is back again. It's only appearing in the new book I've transferred but the spaces before italics are missing again.

repilo · 12-18-2024, 12:15 PM

I would like to add that since I updated the plugins my Libra 2 keeps freezing every now and then. This last time it froze when highlighting a sentence (it contained a word in italics): it has unintentionally highlighted all the text to the end of the page and I can no longer unhighlight it or turn the page; not even after restarting. I had to restart, delete the book and install a previous version of the plugin.

khoogeland · 12-18-2024, 07:36 PM

I also had issues with spaces disappearing, not just italics, but also at other places where the original had a of some sort. Checking the code of the kepub with Sigil showed that the spaces were actually missing from the html.

After reverting to version 3.7.1 (and a lot of deleting and re-adding) I have my spaces back. I hope this helps someone. The github has a full archive for anyone who wants to try reverting.

Love this plugin! I am also very grateful for this forum, as it helped me figure out that the plugin might be causing issues. I almost made a complaint to the bookseller, before realizing that the original epub has none of the problems I saw on my kobo reader.

DNSB · 12-18-2024, 08:10 PM

For now, I've settled for using kepubify to convert the few books I use kepub for (basically, they have large images that I want to be able to zoom) and reverted to using the KoboTouch driver instead of the KoboTouchExtended driver.

khoogeland · 12-19-2024, 07:29 AM

Rolling back to version 3.7.1 has introduced a new problem. Styles that use + are broken on my Kobo Sage.

For instance:
.ff-plat + .ff-plat {
text-indent: 1.5em;
}

The indent disappears because there are extra sections introduced between the paragraphs.

I'm trying 3.7.0 now, which hasn't given me problems with italics so far.
Is there a better way to report these errors. I'm not very familiar with doing this.

12-16-2024, 03:59 PM	#3095
mrbt Junior Member Posts: 1 Karma: 10 Join Date: Dec 2024 Device: Kobo Libra Color	Let me show you an example of the missing space. Original epub: Jenny. <span class="italic">The 3.7.1: Jenny.</span><span class="koboSpan" id="kobo.69.2"></span><span class="koboSpan" id="kobo.69.3"> </span><span class="koboSpan" id="kobo.69.4"></span><span class="italic"><span class="koboSpan" id="kobo.70.1">The 3.7.2: Jenny.</span><span class="italic"><span class="koboSpan" id="kobo.70.1">The So before the last release, the space after the dot get an own group. In the last release, you drop that space without making a group of it.

12-18-2024, 07:36 PM	#3103
khoogeland Member Posts: 10 Karma: 10 Join Date: Jul 2010 Location: Amsterdam Device: Kobo Sage/ Kobo Elipsa	I also had issues with spaces disappearing, not just italics, but also at other places where the original had a <span> of some sort. Checking the code of the kepub with Sigil showed that the spaces were actually missing from the html. After reverting to version 3.7.1 (and a lot of deleting and re-adding) I have my spaces back. I hope this helps someone. The github has a full archive for anyone who wants to try reverting. Love this plugin! I am also very grateful for this forum, as it helped me figure out that the plugin might be causing issues. I almost made a complaint to the bookseller, before realizing that the original epub has none of the problems I saw on my kobo reader.

12-19-2024, 07:29 AM	#3105
khoogeland Member Posts: 10 Karma: 10 Join Date: Jul 2010 Location: Amsterdam Device: Kobo Sage/ Kobo Elipsa	Rolling back to version 3.7.1 has introduced a new problem. Styles that use + are broken on my Kobo Sage. For instance: .ff-plat + .ff-plat { text-indent: 1.5em; } The indent disappears because there are extra <span> sections introduced between the paragraphs. I'm trying 3.7.0 now, which hasn't given me problems with italics so far. Is there a better way to report these errors. I'm not very familiar with doing this.

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12-18-2024, 12:04 PM	#3101
Runnerbeen Enthusiast Posts: 46 Karma: 10 Join Date: Nov 2024 Device: Kobo Libre Colour	I have rolled back to version 3.7.0 and edited a book using Sigil, converted it and now the italic issue is back again. It's only appearing in the new book I've transferred but the spaces before italics are missing again.

12-18-2024, 12:15 PM	#3102
repilo Connoisseur Posts: 97 Karma: 21870 Join Date: Apr 2021 Location: Spain Device: Kobo Libra 2	I would like to add that since I updated the plugins my Libra 2 keeps freezing every now and then. This last time it froze when highlighting a sentence (it contained a word in italics): it has unintentionally highlighted all the text to the end of the page and I can no longer unhighlight it or turn the page; not even after restarting. I had to restart, delete the book and install a previous version of the plugin.

12-18-2024, 08:10 PM	#3104
DNSB Bibliophagist Posts: 46,661 Karma: 169712392 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	For now, I've settled for using kepubify to convert the few books I use kepub for (basically, they have large images that I want to be able to zoom) and reverted to using the KoboTouch driver instead of the KoboTouchExtended driver.