bugGNU TeXmacs - Bugs: bug #30806, rsvg pretty rotten


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bug #30806: rsvg pretty rotten

Submitted by:  Sam Liddicott <samjam>
Submitted on:  Wed 18 Aug 2010 09:59:38 AM UTC  
Category: ConversionPriority: 5 - Normal
Item Group: ErrorStatus: Fixed
Privacy: PublicAssigned to: Sam Liddicott <samjam>
Originator Name: Open/Closed: Closed
Release: r 10013Release: None
Fixed Release: NoneFixed Release: 

Fri 08 Apr 2016 06:27:17 AM UTC, comment #2:

I think we can close this bug. We now try to preserve the vectorial character of svg when printing with the help of inkscape (if available). On-screen svg is handled directly by Qt (if svg was enabled at compile-time). Otherwise rsv-convert is asked a 300dpi output.

Philippe Joyez <pjoyez>
Project Member
Thu 28 Nov 2013 11:18:47 AM UTC, comment #1:

External converters are probably insufficient for vector graphics, since it is unclear how to specify the width and height. Some new mechanism would be needed here, if we want optimal resolution.

Joris van der Hoeven <vdhoeven>
Project Administrator
Wed 18 Aug 2010 09:59:38 AM UTC, original submission:

The inkscape converter definition in ./TeXmacs/progs/convert/images/init-images.scm:

(converter svg-file postscript-file
(:require (url-exists-in-path? "inkscape"))
(:shell "inkscape" "-z" "-f" from "-P" to))

is pretty fine; in outputting postscript it is resolution neutral.

The rsvg definition (which is preferred by TeXmacs and used during postscript definition) is rotten:

(converter svg-file png-file
(:require (url-exists-in-path? "rsvg"))
(:shell "rsvg" "-f png" from to))

It allows rsvg to choose the generated output size regardless of the TeXmacs global dpi or graphics size.

And I find the resolution to be pretty rotten. I think that --dpi-x and --dpi-y should be specified to the global dpi (for the benefit of any px units in the svg) and also -w and -h should be specified as given in the <postscript|...> node.

I'm still trying to locate the implementation of the <postscript tag so I can hazard a patch. Best candidate so far is image->postscript in ./TeXmacs/progs/kernel/texmacs/tm-convert.scm but I'm not convinced.

Sam Liddicott <samjam>
Project MemberIn charge of this item.


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Carbon-Copy List
  • -unavailable- added by pjoyez (Posted a comment)
  • -unavailable- added by vdhoeven (Posted a comment)
  • -unavailable- added by mdbenito (Updated the item)
  • -unavailable- added by samjam (Submitted the item)

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    Follow 7 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri 08 Apr 2016 06:27:17 AM UTCpjoyezStatusConfirmed=>Fixed
      Release=>r 10013
    Thu 28 Nov 2013 11:18:47 AM UTCvdhoevenStatusNone=>Confirmed
    Thu 13 Sep 2012 08:12:38 AM UTCmdbenitoCategoryNone=>Conversion
      Item GroupNone=>Error
      Assigned toNone=>samjam

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