Coverpage Background Color

pete6055 · 09-15-2021, 03:26 PM

I'm new to the calibre epub viewer.

Why doesn't the code below create the coverpage background color in the calibre epub viewer (ver 5.27)?
***

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
<title>Cover</title>
</head>

<body style="text-align: center; padding: 0pt; margin: 0pt;">
<div style="background-color: #090909;">
<img alt="cover" src="../Images/cover.jpeg"/>
</div>
</body>
</html>
***

I see the color section of Preferences might be used, but I only want the background to apply to the cover. Linking to a stylesheet doesn't appear to work either. The background remains White.

Thanks for your help.

theducks · 09-15-2021, 03:44 PM

In The VIEWER: Preferences: Colors: Override: NEVER
might work

pete6055 · 09-15-2021, 05:09 PM

Thanks, Ducks...

But NEVER is already set. I tried the other choices too, and no dice. Moreover, background-color works in both Sigil and Adobe DE.

kovidgoyal · 09-15-2021, 11:50 PM

IIRC, with epub the viewer doesnt use the titlepage markup at all, it generates its own, when it detects that the cover is a simple image. This is done because lots of books have broken title page markup that doesnt work well.

So you cannot control the presentation of the cover image in the viewer from the book's markup.

pete6055 · 09-16-2021, 03:24 PM

Thanks for the answer. Can the cover image presentation be controlled elsewhere in Calibre?

kovidgoyal · 09-16-2021, 09:38 PM

Sure you can modify calibre source code, but there is no setting for it other than the one to preserve cover aspect ratio under Page Layout in the viewer settings.

09-15-2021, 03:26 PM	#1
pete6055 Connoisseur Posts: 66 Karma: 10 Join Date: Nov 2012 Device: none	Coverpage Background Color I'm new to the calibre epub viewer. Why doesn't the code below create the coverpage background color in the calibre epub viewer (ver 5.27)? * <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops"> <head> <title>Cover</title> </head> <body style="text-align: center; padding: 0pt; margin: 0pt;"> <div style="background-color: #090909;"> <img alt="cover" src="../Images/cover.jpeg"/> </div> </body> </html> * I see the color section of Preferences might be used, but I only want the background to apply to the cover. Linking to a stylesheet doesn't appear to work either. The background remains White. Thanks for your help.

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09-15-2021, 03:44 PM	#2
theducks Well trained by Cats Posts: 29,817 Karma: 54830978 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	In The VIEWER: Preferences: Colors: Override: NEVER might work

09-15-2021, 05:09 PM	#3
pete6055 Connoisseur Posts: 66 Karma: 10 Join Date: Nov 2012 Device: none	Thanks, Ducks... But NEVER is already set. I tried the other choices too, and no dice. Moreover, background-color works in both Sigil and Adobe DE.

09-15-2021, 11:50 PM	#4
kovidgoyal creator of calibre Posts: 43,866 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	IIRC, with epub the viewer doesnt use the titlepage markup at all, it generates its own, when it detects that the cover is a simple image. This is done because lots of books have broken title page markup that doesnt work well. So you cannot control the presentation of the cover image in the viewer from the book's markup.

09-16-2021, 03:24 PM	#5
pete6055 Connoisseur Posts: 66 Karma: 10 Join Date: Nov 2012 Device: none	Thanks for the answer. Can the cover image presentation be controlled elsewhere in Calibre?

09-16-2021, 09:38 PM	#6
kovidgoyal creator of calibre Posts: 43,866 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Sure you can modify calibre source code, but there is no setting for it other than the one to preserve cover aspect ratio under Page Layout in the viewer settings.