0.8.61: E-book viewer - paged mode, I like it - Page 2

Perkin · 07-23-2012, 06:07 AM

@kovid, can't log-in to bug-tracker.
( Oops! Sorry, something just went wrong in Launchpad Login Service. )

For an quick example which shows the problem, in sigil, I created a new file, and all html of first page was :

Code:

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
  "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title></title>
  
<style type="text/css">
h1 {margin:5em 0;text-align:center;}
</style>
</head>

<body>
  <h1>Part One</h1>
</body>
</html>

When displaying as flow, the top-margin is respected and displayed as required vertical position, but with the paged mode, (without the override margins) the top-margin is ignored and the header is displayed at top of page, rather than the desired offset.

Here's the file that sigil created.

kovidgoyal · 07-23-2012, 06:37 AM

Ah yes, this is caused by a limitation of the webkit column algorithm, for which there isn't an easy fix. Basically, the margin of the first block element bleeds out above the top of the columns. It therefore overlaps with the top margin of the page and gets reduced to zero visually. I dont see how this can be fixed short of fixing it in webkit, which is not something I want to spend the time to do. You could probably hack it by using padding instead of margin on your heading.

Perkin · 07-23-2012, 06:44 AM

It is only a minor annoyance and not *that* much worth faffing around to find a workaround, but I'll try the padding and see where that leads.

Thanks.

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07-23-2012, 06:37 AM	#17
kovidgoyal creator of calibre Posts: 45,365 Karma: 27230406 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Ah yes, this is caused by a limitation of the webkit column algorithm, for which there isn't an easy fix. Basically, the margin of the first block element bleeds out above the top of the columns. It therefore overlaps with the top margin of the page and gets reduced to zero visually. I dont see how this can be fixed short of fixing it in webkit, which is not something I want to spend the time to do. You could probably hack it by using padding instead of margin on your heading.

07-23-2012, 06:44 AM	#18
Perkin Guru Posts: 657 Karma: 64171 Join Date: Sep 2010 Location: Kent, England, Sol 3, ZZ9 plural Z Alpha Device: Sony PRS-300, Kobo Aura HD, iPad (Marvin)	It is only a minor annoyance and not that much worth faffing around to find a workaround, but I'll try the padding and see where that leads. Thanks.

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