[cairo] Poppler -> Cairo (svg) no text in output
mpsuzuki at hiroshima-u.ac.jp
Mon Jan 20 16:55:58 PST 2014
If I have to work with this issue by myself,
maybe, I will work on Cairo's SVG surface to
add an option to emit the glyph outline images
as the SVG font, in next, I will work on Poppler
to add an option for Cairo output device to
control the option.
Another option might be working with pdftohtml
to include non-text SVG graphic as a background
image beyond transparent text content.
Denis Kuzmenok wrote:
> Thanks for your response. It's not a browser issue, I'm investigating the SVG file itself and it only has images, not text parts. I thought there should be some font issues, but can't find information what packages to install or anything else to do with that?
> Basically poppler lib sees text from pdf file, but when doing "poppler_page_render_for_printing(page, drawcontext)" I get only images, not a text.
> --- Исходное сообщение ---
> От кого: "suzuki toshiya" < mpsuzuki at hiroshima-u.ac.jp >
> Дата: 20 января 2014, 01:54:45
> Ahhh, maybe I found it. The background would be something like...
> * Many PDF include embedded fonts which they are not installed into the system natively.
> * Therefore, for truthful rendering onto SVG surface, searching "compatible font" from
> the natiely installed font in the rendering system would not be good idea. On the other
> hand, using the embedded font would be better.
> * SVG has SVG font feature that SVG document could show the text by the font embedded in SVG.
> * However, some web browsers (e.g. Firefox) do not support SVG font.
> * As a result, the embedded font is (unfortunately) included as a collection of the reusable
> graphics in SVG, and the text is shown as a serie of the graphics.
> On 01/20/2014 08:41 AM, suzuki toshiya wrote:
>> Which browser do you use to display SVG data?
>> # I think this question could be inappropriate in
>> # cairo mailing list, but please let me continue
>> # the discussion in here, until I find appropriate
>> # list or forum to talk about...
>> On 01/20/2014 12:07 AM, Denis Kuzmenok wrote:
>>> Hi there.
>>> I have installed these versions:
>>> Cairo 1.12.2
>>> Poppler 0.24.5
>>> librsvg 2.26.1
>>> pdf2svg 0.2.2
>>> Cairo uses Freetype and Fontconfig as font backends. I tried with different PDF files.
>>> pdftotext or pdftohtml shows text from pdf file, but if running with pdf2svg - output SVG file has only text as images (no text, only images in svg output file).
>>> Is that the way it should work? I thought svg should output SVG with almost the same formatting, sizes and placement?
>>> Any suggestions?
More information about the cairo