Embeding font into LRF

[kiklop74]

@JSWolf

This is all nice and fine but involves manual labor. There is no way to do this just by using calibre.

For example I have a book in Serbian formatted as pure html. I cleaned it up with tidy making it fully standard compliant. Than I added this inside head tag:

<style type="text/css">
@font-face { font-family: dejavu; font-style: normal; font-weight: normal; src: url(DejaVuSans.ttf) }
body {font-family: dejavu,sans-serif} 
p    {font-family: dejavu,sans-serif} 
</style>

And placed font dejavu.ttf in the same folder as html. Opened it in Safari (one of the few browser to support font embedding) everything looks fine.
Start calibre (0.5.14) and import book.
Convert book to the epub and result does not show embedded font on the device nor on desktop Adobe DE.
Decompress the epub and verify css.

This is the generated css:

@font-face {
    font-family: dejavu;
    font-style: normal;
    font-weight: normal;
    src: url(resources/DejaVuSans_0_0.ttf)
    }
body {
    font-family: dejavu, sans-serif
    }
p {
    font-family: dejavu, sans-serif
    }
.calibre_class_1 {
    display: block;
    page-break-after: always
    }

However if I change the path to this:

@font-face {
    font-family: dejavu;
    font-style: normal;
    font-weight: normal;
    src: url(DejaVuSans_0_0.ttf)
    }

Than it starts working.

I hope this will be fixed in 0.6, but until that is done it is far from user frendly.

It is not just point that it can be done, but what matters also is that it is easy enough for everybody.

[JSWolf]

I suggest opening a ticket on the Calibre website so this issue can be fixed.

[kiklop74]

I just did that. http://calibre.kovidgoyal.net/ticket/2656

[pepak]

What exactly does ebook-convert expect in its --sans-family/--serif-family/--mono-family switches? I just couldn't find a format that works - font filename without path, font filename with path, font name as shown by Windows when the font is opened in control panel, font family. No matter what I do, the font does not get embedded. I even went as far as running the GUI (first time in half a year at least) to try font-embedding there, but even though I set up all font boxes (apparently font family is expected), the converted LRF wouldn't have any fonts embedded in it.

[kovidgoyal]

The same as html2lrf that code hasn't changed.

[pepak]

Well, what was the old format then? I never used embedding, since flashing the Reader was the preferable method, but this time I need to use embedded fonts for a change.

[kovidgoyal]

IIRC, just the font family name.

[pepak]

OK, that does not work. Can I use some debug switches or something to find out why? I don't know, maybe it requires admin rights or something, or maybe Calibre is looking in wrong directory, or something. It will probably be something so simple and obvious I will blush when I discover it, but at the moment, I am at a loss what to do.

[kovidgoyal]

calibre uses the fontconfig library to find fonts. Here's how you can test to see if fontconfig is finding your fonts

calibre-debug -c "from calibre.utils.fonts import test; test()"

[pepak]

calibre-debug -c "from calibre.utils.fonts import test; test()"

[u'Arial',
 u'Courier New',
 u'Franklin Gothic Medium',
 u'Lucida Console',
 u'Lucida Sans',
 u'Lucida Sans Unicode',
 u'Marlett',
 u'Microsoft Sans Serif',
 u'Tahoma',
 u'Times New Roman',
 u'Trebuchet MS',
 u'Verdana',
 u'Wingdings']
{}
None
Pattern has 3 elts (size 16)
	family: "liberation serif"(s)
	slant: 100(i)(s)
	weight: 200(i)(s)

ebook-convert 1.txt 1.lrf --serif-family="Times New Roman"

1% Converting input to HTML...
InputFormatPlugin: TXT Input running on D:\Tmp\1.txt
InputFormatPlugin: HTML Input running on D:\Tmp\temp_calibre_txt_input_to_html.html
Language not specified
Creator not specified
Title not specified
Building file list...
34% Running transforms on ebook...
Merging user specified metadata...
Detecting structure...
Auto generated TOC with 0 entries.
Flattening CSS and remapping font sizes...
Source base font size is 12.00000pt
Cleaning up manifest...
Trimming unused files from manifest...
Creating LRF Output...
67% Creating LRF Output
Unable to find serif family Times New Roman
Processing u'temp_calibre_txt_input_to_html.html'
	Parsing HTML...
	Converting to BBeB...
LRF output written to D:\Tmp\1.lrf
Output saved to   D:\Tmp\1.lrf

[kovidgoyal]

calibre-debug -c "from calibre.utils.fonts import fontconfig, _fc; fontconfig.wait(); print _fc.files_for_family('Times New Roman')"

[pepak]

That returns just an empty pair of square brackets: []

[JvdW]

I can confirm that running that snippet gives me a empty set of [] too. I'm using XP SP2 and Calibre 0.6.13.

Joop

[kovidgoyal]

OK open a ticket and I'll look at it.