[NTG-context] how to include an an svg file?

[NTG-context] how to include an an svg file?

[seyal.zavira]

hi all.

when i want to put some SVGs in my document the svg does not render properly here is the code:

\starttext
\startMPcode
draw lmt_svg [
filename = "smile.svg"] 
\stopMPcode
\stoptext

also when i look at evenmore manual at page15, for font Abelone-FREE the gradients has rendered properly is there difference between rendering such fonts and rendering SVGs?

if its a font feature how i can use this font features for my svg?
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[NTG-context] Re: how to include an an svg file?

[Jean-Pierre Delange]

Hi !

Did you have a look at this :

https://wiki.contextgarden.net/SVG

Le 12/03/2024 à 14:36, seyal.zavira@gmail.com a écrit :
> hi all.
>
> when i want to put some SVGs in my document the svg does not render properly here is the code:
>
> \starttext
> \startMPcode
> draw lmt_svg [
> filename = "smile.svg"]
> \stopMPcode
> \stoptext
>
> also when i look at evenmore manual at page15, for font Abelone-FREE the gradients has rendered properly is there difference between rendering such fonts and rendering SVGs?
>
> if its a font feature how i can use this font features for my svg?
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[seyal zavira]

[-- Attachment #1.1: Type: text/plain, Size: 2044 bytes --]

thanks for your reply

yes but i don't have problem with regular svgs but when svgs has gradient
color it does not produce any color in output.

you can see my svg in attachment.

On Tue, Mar 12, 2024 at 9:43 AM Jean-Pierre Delange <adeimantos@free.fr>
wrote:

> Hi !
>
> Did you have a look at this :
>
> https://wiki.contextgarden.net/SVG
>
> Le 12/03/2024 à 14:36, seyal.zavira@gmail.com a écrit :
> > hi all.
> >
> > when i want to put some SVGs in my document the svg does not render
> properly here is the code:
> >
> > \starttext
> > \startMPcode
> > draw lmt_svg [
> > filename = "smile.svg"]
> > \stopMPcode
> > \stoptext
> >
> > also when i look at evenmore manual at page15, for font Abelone-FREE the
> gradients has rendered properly is there difference between rendering such
> fonts and rendering SVGs?
> >
> > if its a font feature how i can use this font features for my svg?
> >
> ___________________________________________________________________________________
> > If your question is of interest to others as well, please add an entry
> to the Wiki!
> >
> > maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> > webpage  : https://www.pragma-ade.nl / https://context.aanhet.net
> (mirror)
> > archive  : https://github.com/contextgarden/context
> > wiki     : https://wiki.contextgarden.net
> >
> ___________________________________________________________________________________
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

[-- Attachment #1.2: Type: text/html, Size: 3593 bytes --]

[-- Attachment #2: smile.svg --]
[-- Type: image/svg+xml, Size: 7284 bytes --]

[-- Attachment #3: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Henning Hraban Ramm]

Am 12.03.24 um 14:53 schrieb seyal zavira:
>      > when i want to put some SVGs in my document the svg does not
>     render properly here is the code:
>      >
>      > \starttext
>      > \startMPcode
>      > draw lmt_svg [
>      > filename = "smile.svg"]
>      > \stopMPcode
>      > \stoptext

I can confirm the problem also with the regular image call

\externalfigure[smile.svg][conversion=mp]

Hraban
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Jean-Pierre Delange]

[-- Attachment #1.1: Type: text/plain, Size: 1751 bytes --]

Yes, the code given by Seyal gives only the circle vith eyes and mouth 
without colors (on my computer). But, It seems that one have to deal 
with a more complex lines of code. If I'm not mistaken, MetaPost alone 
natively supports only the 3 colours red, green and blue. To support 
CMYK colour gradients, MetaPost needs to work with Metafun (see here : 
https://wiki.contextgarden.net/Color_in_MetaPost).

Perhaps an image in *.png format is required. But I can't give any 
advice, as I'm not an experienced MetaPost/Metafun user.

see this code below and the result as attached file :

\starttext

\input tufte


\externalfigure[smile.svg][conversion=mp]

\stoptext


Best//JP


Le 12/03/2024 à 15:01, Henning Hraban Ramm a écrit :
> Am 12.03.24 um 14:53 schrieb seyal zavira:
>>      > when i want to put some SVGs in my document the svg does not
>>     render properly here is the code:
>>      >
>>      > \starttext
>>      > \startMPcode
>>      > draw lmt_svg [
>>      > filename = "smile.svg"]
>>      > \stopMPcode
>>      > \stoptext
>
> I can confirm the problem also with the regular image call
>
> \externalfigure[smile.svg][conversion=mp]
>
> Hraban
> ___________________________________________________________________________________ 
>
> If your question is of interest to others as well, please add an entry 
> to the Wiki!
>
> maillist : ntg-context@ntg.nl / 
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net 
> (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________ 
>

[-- Attachment #1.2: Type: text/html, Size: 4237 bytes --]

[-- Attachment #2: ctx-test-metapost-svg.pdf --]
[-- Type: application/pdf, Size: 11105 bytes --]

[-- Attachment #3: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Hans Hagen]

On 3/12/2024 2:53 PM, seyal zavira wrote:
> thanks for your reply
> 
> yes but i don't have problem with regular svgs but when svgs has 
> gradient color it does not produce any color in output.
> 
> you can see my svg in attachment.
svg gets worse and worse (esp the inheritance model) ... anyway, i can 
sort of get the gradient but no stepwise gradient opacity (in pdf and 
i'm not going to emulate something) (it's not the most interesting stuff 
to work on unpaid)

but ... i don't know if fixing this breaks something else

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[seyal zavira]

[-- Attachment #1.1: Type: text/plain, Size: 1730 bytes --]

Thanks. I appreciate your work

You are correct. when i convert this svg to pdf via inkscape it works like
a charm.

But what is standard way of including an svg file with context if we want
to inkscape render the images?

On Tue, 12 Mar 2024, 21:51 Hans Hagen, <j.hagen@xs4all.nl> wrote:

> On 3/12/2024 2:53 PM, seyal zavira wrote:
> > thanks for your reply
> >
> > yes but i don't have problem with regular svgs but when svgs has
> > gradient color it does not produce any color in output.
> >
> > you can see my svg in attachment.
> svg gets worse and worse (esp the inheritance model) ... anyway, i can
> sort of get the gradient but no stepwise gradient opacity (in pdf and
> i'm not going to emulate something) (it's not the most interesting stuff
> to work on unpaid)
>
> but ... i don't know if fixing this breaks something else
>
> Hans
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

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[-- Attachment #2: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

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wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Henning Hraban Ramm]

Am 12.03.24 um 23:59 schrieb seyal zavira:
> You are correct. when i convert this svg to pdf via inkscape it works 
> like a charm.
> 
> But what is standard way of including an svg file with context if we 
> want to inkscape render the images?

\externalfigure[smile]

without any other settings, but inkscape must be callable on the command 
line (which doesn’t work for me on MacOS any more, must investigate…).

Hraban
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Jean-Pierre Delange]

[-- Attachment #1.1: Type: text/plain, Size: 1981 bytes --]

Hi Hraban & Seyal

I can confirm that converting the *.svg file into a *.pdf file displays 
the colour shades correctly ...
(I used Gimp to export the smile.svg file to a smile03.pdf file).

The MWE below works correctly, even if you have to make finer 
adjustments to place the figure in a precise position on the page. As 
I'm in the process of enriching and clarifying a few pages of the 
ConTeXt wiki and the French wikibook, I'm interested in the details 
concerning the position of figures, images and photos etc. So please let 
me know (in private mail) how you make your documents (a MWE will do).

\starttext

\input tufte


\externalfigure[smile03.pdf][conversion=mp]

\stoptext



It seems to me that Pablo has been struggling with the fine graining of 
PDF files in recent months, but I think it was more about the 
information contained in the PDF output than the processing of PDF 
images in *.tex file output.


JP


Le 13/03/2024 à 09:16, Henning Hraban Ramm a écrit :
> Am 12.03.24 um 23:59 schrieb seyal zavira:
>> You are correct. when i convert this svg to pdf via inkscape it works 
>> like a charm.
>>
>> But what is standard way of including an svg file with context if we 
>> want to inkscape render the images?
>
> \externalfigure[smile]
>
> without any other settings, but inkscape must be callable on the 
> command line (which doesn’t work for me on MacOS any more, must 
> investigate…).
>
> Hraban
> ___________________________________________________________________________________ 
>
> If your question is of interest to others as well, please add an entry 
> to the Wiki!
>
> maillist : ntg-context@ntg.nl / 
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net 
> (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________ 
>

[-- Attachment #1.2: Type: text/html, Size: 4727 bytes --]

[-- Attachment #2: ctx-test-metapost-svg.pdf --]
[-- Type: application/pdf, Size: 43435 bytes --]

[-- Attachment #3: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Henning Hraban Ramm]

Am 13.03.24 um 13:14 schrieb Jean-Pierre Delange:
> Hi Hraban & Seyal
> 
> I can confirm that converting the *.svg file into a *.pdf file displays 
> the colour shades correctly ...
> (I used Gimp to export the smile.svg file to a smile03.pdf file).

Gimp is a really bad choice in this case, since it converts vectors into 
pixels.
And if you place a PDF, no further conversion is needed.

If you have problems with SVGs, use Inkscape (or some commercial 
alternative like Affinity Designer or Adobe Illustrator) for PDF conversion.

> The MWE below works correctly, even if you have to make finer 
> adjustments to place the figure in a precise position on the page. As 
> I'm in the process of enriching and clarifying a few pages of the 
> ConTeXt wiki and the French wikibook, I'm interested in the details 
> concerning the position of figures, images and photos etc. So please let 
> me know (in private mail) how you make your documents (a MWE will do).

Position options:
* relative placement as floats, i.e. \placefigure
* absolute placement on layers, i.e. \setlayer
* relative corrections with \offset (also within floats)

Hraban
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Jean-Pierre Delange]

Hraban,
Thank a lot for these clarifications !
Jean-Pierre


> Le 13 mars 2024 à 13:41, Henning Hraban Ramm <texml@fiee.net> a écrit :
> 
> Am 13.03.24 um 13:14 schrieb Jean-Pierre Delange:
>> Hi Hraban & Seyal
>> I can confirm that converting the *.svg file into a *.pdf file displays the colour shades correctly ...
>> (I used Gimp to export the smile.svg file to a smile03.pdf file).
> 
> Gimp is a really bad choice in this case, since it converts vectors into pixels.
> And if you place a PDF, no further conversion is needed.
> 
> If you have problems with SVGs, use Inkscape (or some commercial alternative like Affinity Designer or Adobe Illustrator) for PDF conversion.
> 
>> The MWE below works correctly, even if you have to make finer adjustments to place the figure in a precise position on the page. As I'm in the process of enriching and clarifying a few pages of the ConTeXt wiki and the French wikibook, I'm interested in the details concerning the position of figures, images and photos etc. So please let me know (in private mail) how you make your documents (a MWE will do).
> 
> Position options:
> * relative placement as floats, i.e. \placefigure
> * absolute placement on layers, i.e. \setlayer
> * relative corrections with \offset (also within floats)
> 
> Hraban
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Hans Hagen via ntg-context]

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On 3/13/2024 9:16 AM, Henning Hraban Ramm wrote:
> Am 12.03.24 um 23:59 schrieb seyal zavira:
>> You are correct. when i convert this svg to pdf via inkscape it works 
>> like a charm.
>>
>> But what is standard way of including an svg file with context if we 
>> want to inkscape render the images?
> 
> \externalfigure[smile]
> 
> without any other settings, but inkscape must be callable on the command 
> line (which doesn’t work for me on MacOS any more, must investigate…).
     \startMPcode
         draw lmt_svg [ filename = "smile.svg"]
     \stopMPcode

Now gives the attached but it took me a while to figure out what works. 
An inkscape export adds for instance something (globally applied) that 
is not in the svg file (which actually derived from tiger.svg as 
mentioned in the file).

To be honest this is a horrible file and a good example of making things 
more complex than needed (probably common in wysiwyg applications), 
although we already had the machinery in the mp/pdf converter.

The biggest issue here is that one has to put some constrants in place 
order to make it work in e.g. sumatra (mypdf) and acrobat (which here 
actually does weird erratic things when I play with another test).

As with much complex svg, browsers also differ in interpretation o fsome 
features so it's hard to figure out what to do when there are 
conflicting demands. (Pointing to something that works tomorrow doesn't 
mean it worked when we tried to implement something yesterday.)

For Hraben - who mentioned it - i also added support for group opacity 
and transformed shades.

In the process I tried a few inkscape options (pdf export) but some 
produce faulty files (with missing stuff) so i guess we have a complex 
situation in general. That said, as long as one sticks to reliable and 
clean code (plain svg) it should mostly work out.

Text is another matter because svg dropped glyph support so now 
everything has to go through font features which in turn means that if 
one uses svg as output format one has to specify every character with 
possible abuse of a substitution feature that accesses it. So that is no 
longer a real interesting option, unless of course one exports all text 
as curves, just to be sure.

(I will extend general text suport but it will always be suboptimal but 
then, svg is not a long term archival format anyway.)

No upload yet as i also want to do some cleanup,

ps. For metapost lovers, here is some of the trickery used:

\startMPpage[offset=1ts]

     draw image (
         fill (unitsquare xscaled 10cm yscaled 4cm)
             withcolor svgcolor(0.5,0,0)
         ;

         registerluminositygroup ("test") (
             fill (unitsquare scaled 2cm) shifted (1cm,1cm)
                 withshademethod "circular"
                 withshadecolors (.6,.1)
         ) ;

         applyluminositygroup ("test") (
             fill (unitsquare scaled 2cm) shifted (1cm,1cm)
                 withshademethod "circular"
         ) ;

         draw luminositygroup (
             fill (unitsquare scaled 2cm) shifted (4cm,1cm)
                 withshademethod "circular"
                 withshadecolors (.6,.1)
         ) (
             fill (unitsquare scaled 2cm) shifted (4cm,1cm)
                 withshademethod "circular"
         ) ;

         draw luminosityshade (
             (unitsquare scaled 2cm) shifted (7cm,1cm)
         ) (
                 withshademethod "circular"
                 withshadecolors (.6,.1)
         ) (
                 withshademethod "circular"
         ) ;
     ) ;

\stopMPpage

Not that intuitive and a bit ugly deep down but it works (there was no 
need to extend mp btw as we already have graphic grouping in the engine).

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------

[-- Attachment #2: smile-test.pdf --]
[-- Type: application/pdf, Size: 8714 bytes --]

[-- Attachment #3: luminosity.pdf --]
[-- Type: application/pdf, Size: 5430 bytes --]

[-- Attachment #4: Type: text/plain, Size: 511 bytes --]

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___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[seyal zavira]

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Thanks you and harban for all your thorough explanation.

On Fri, 15 Mar 2024, 23:11 Hans Hagen via ntg-context, <ntg-context@ntg.nl>
wrote:

> On 3/13/2024 9:16 AM, Henning Hraban Ramm wrote:
> > Am 12.03.24 um 23:59 schrieb seyal zavira:
> >> You are correct. when i convert this svg to pdf via inkscape it works
> >> like a charm.
> >>
> >> But what is standard way of including an svg file with context if we
> >> want to inkscape render the images?
> >
> > \externalfigure[smile]
> >
> > without any other settings, but inkscape must be callable on the command
> > line (which doesn’t work for me on MacOS any more, must investigate…).
>      \startMPcode
>          draw lmt_svg [ filename = "smile.svg"]
>      \stopMPcode
>
> Now gives the attached but it took me a while to figure out what works.
> An inkscape export adds for instance something (globally applied) that
> is not in the svg file (which actually derived from tiger.svg as
> mentioned in the file).
>
> To be honest this is a horrible file and a good example of making things
> more complex than needed (probably common in wysiwyg applications),
> although we already had the machinery in the mp/pdf converter.
>
> The biggest issue here is that one has to put some constrants in place
> order to make it work in e.g. sumatra (mypdf) and acrobat (which here
> actually does weird erratic things when I play with another test).
>
> As with much complex svg, browsers also differ in interpretation o fsome
> features so it's hard to figure out what to do when there are
> conflicting demands. (Pointing to something that works tomorrow doesn't
> mean it worked when we tried to implement something yesterday.)
>
> For Hraben - who mentioned it - i also added support for group opacity
> and transformed shades.
>
> In the process I tried a few inkscape options (pdf export) but some
> produce faulty files (with missing stuff) so i guess we have a complex
> situation in general. That said, as long as one sticks to reliable and
> clean code (plain svg) it should mostly work out.
>
> Text is another matter because svg dropped glyph support so now
> everything has to go through font features which in turn means that if
> one uses svg as output format one has to specify every character with
> possible abuse of a substitution feature that accesses it. So that is no
> longer a real interesting option, unless of course one exports all text
> as curves, just to be sure.
>
> (I will extend general text suport but it will always be suboptimal but
> then, svg is not a long term archival format anyway.)
>
> No upload yet as i also want to do some cleanup,
>
> ps. For metapost lovers, here is some of the trickery used:
>
> \startMPpage[offset=1ts]
>
>      draw image (
>          fill (unitsquare xscaled 10cm yscaled 4cm)
>              withcolor svgcolor(0.5,0,0)
>          ;
>
>          registerluminositygroup ("test") (
>              fill (unitsquare scaled 2cm) shifted (1cm,1cm)
>                  withshademethod "circular"
>                  withshadecolors (.6,.1)
>          ) ;
>
>          applyluminositygroup ("test") (
>              fill (unitsquare scaled 2cm) shifted (1cm,1cm)
>                  withshademethod "circular"
>          ) ;
>
>          draw luminositygroup (
>              fill (unitsquare scaled 2cm) shifted (4cm,1cm)
>                  withshademethod "circular"
>                  withshadecolors (.6,.1)
>          ) (
>              fill (unitsquare scaled 2cm) shifted (4cm,1cm)
>                  withshademethod "circular"
>          ) ;
>
>          draw luminosityshade (
>              (unitsquare scaled 2cm) shifted (7cm,1cm)
>          ) (
>                  withshademethod "circular"
>                  withshadecolors (.6,.1)
>          ) (
>                  withshademethod "circular"
>          ) ;
>      ) ;
>
> \stopMPpage
>
> Not that intuitive and a bit ugly deep down but it works (there was no
> need to extend mp btw as we already have graphic grouping in the engine).
>
> Hans
>
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: how to include an an svg file?

[Jean-Pierre Delange]

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Dear CTX wizards,

The commands given by Hans don't work properly in my case (with CTX on 
Windows 11). I am probably ignorant of how to implement \startMPpage. 
I'm not a "MetaPost lover", but I'd like to understand something; 
especially as I know how to make simple frames to include summaries.

In any case, the MWE below correctly displays the "smile" images (in 
*.pdf format) and incorrectly displays the smile.svg image). On the 
other hand, the \startMPpage script given by Hans only produces a white 
square. The *.log is attached.

The MWE :

\starttext

\startchapter[title={MetaPost}]


First : a draw sample with a simple command %\externalfigure


\externalfigure[smile.pdf]


% Hans comments on Metapost


Now gives the attached but it took me a while to figure out what works. 
An inkscape export adds for instance something (globally applied) that 
is not in the svg file (which actually derived from tiger.svg as 
mentioned in the file).


To be honest this is a horrible file and a good example of making things 
more complex than needed (probably common in wysiwyg applications), 
although we already had the machinery in the mp/pdf converter.


The biggest issue here is that one has to put some constrants in place 
order to make it work in e.g. sumatra (mypdf) and acrobat (which here 
actually does weird erratic things when I play with another test).


As with much complex svg, browsers also differ in interpretation o fsome 
features so it's hard to figure out what to do when there are 
conflicting demands. (Pointing to something that works tomorrow doesn't 
mean it worked when we tried to implement something yesterday.)


For Hraban - who mentioned it - i also added support for group opacity 
and transformed shades.


Hans Hagen


% If we use another call to the same smile drawing (but in *.svg format)

% the svg file is given by Inkscape (as the smile.pdf, exported through 
Inkscape)


\startMPcode

draw lmt_svg [ filename = "smile.svg"]

\stopMPcode



\stopchapter


\startchapter[title={Hans tricky drawing}]


Now, see the results of Hans has given to \quote{metapost lovers}, here 
is some of the trickery used :


\startMPpage[offset=1ts]


draw image (

fill (unitsquare xscaled 10cm yscaled 4cm)

withcolor svgcolor(0.5,0,0)

;


registerluminositygroup ("test") (

fill (unitsquare scaled 2cm) shifted (1cm,1cm)

withshademethod "circular"

withshadecolors (.6,.1)

) ;


applyluminositygroup ("test") (

fill (unitsquare scaled 2cm) shifted (1cm,1cm)

withshademethod "circular"

) ;


draw luminositygroup (

fill (unitsquare scaled 2cm) shifted (4cm,1cm)

withshademethod "circular"

withshadecolors (.6,.1)

) (

fill (unitsquare scaled 2cm) shifted (4cm,1cm)

withshademethod "circular"

) ;


draw luminosityshade (

(unitsquare scaled 2cm) shifted (7cm,1cm)

) (

withshademethod "circular"

withshadecolors (.6,.1)

) (

withshademethod "circular"

) ;

) ;


\stopMPpage

\stopchapter


\stoptext


Le 15/03/2024 à 20:39, Hans Hagen via ntg-context a écrit :
> On 3/13/2024 9:16 AM, Henning Hraban Ramm wrote:
>> Am 12.03.24 um 23:59 schrieb seyal zavira:
>>> You are correct. when i convert this svg to pdf via inkscape it 
>>> works like a charm.
>>>
>>> But what is standard way of including an svg file with context if we 
>>> want to inkscape render the images?
>>
>> \externalfigure[smile]
>>
>> without any other settings, but inkscape must be callable on the 
>> command line (which doesn’t work for me on MacOS any more, must 
>> investigate…).
>     \startMPcode
>         draw lmt_svg [ filename = "smile.svg"]
>     \stopMPcode
>
> Now gives the attached but it took me a while to figure out what 
> works. An inkscape export adds for instance something (globally 
> applied) that is not in the svg file (which actually derived from 
> tiger.svg as mentioned in the file).
>
> To be honest this is a horrible file and a good example of making 
> things more complex than needed (probably common in wysiwyg 
> applications), although we already had the machinery in the mp/pdf 
> converter.
>
> The biggest issue here is that one has to put some constrants in place 
> order to make it work in e.g. sumatra (mypdf) and acrobat (which here 
> actually does weird erratic things when I play with another test).
>
> As with much complex svg, browsers also differ in interpretation o 
> fsome features so it's hard to figure out what to do when there are 
> conflicting demands. (Pointing to something that works tomorrow 
> doesn't mean it worked when we tried to implement something yesterday.)
>
> For Hraben - who mentioned it - i also added support for group opacity 
> and transformed shades.
>
> In the process I tried a few inkscape options (pdf export) but some 
> produce faulty files (with missing stuff) so i guess we have a complex 
> situation in general. That said, as long as one sticks to reliable and 
> clean code (plain svg) it should mostly work out.
>
> Text is another matter because svg dropped glyph support so now 
> everything has to go through font features which in turn means that if 
> one uses svg as output format one has to specify every character with 
> possible abuse of a substitution feature that accesses it. So that is 
> no longer a real interesting option, unless of course one exports all 
> text as curves, just to be sure.
>
> (I will extend general text suport but it will always be suboptimal 
> but then, svg is not a long term archival format anyway.)
>
> No upload yet as i also want to do some cleanup,
>
> ps. For metapost lovers, here is some of the trickery used:
>
> \startMPpage[offset=1ts]
>
>     draw image (
>         fill (unitsquare xscaled 10cm yscaled 4cm)
>             withcolor svgcolor(0.5,0,0)
>         ;
>
>         registerluminositygroup ("test") (
>             fill (unitsquare scaled 2cm) shifted (1cm,1cm)
>                 withshademethod "circular"
>                 withshadecolors (.6,.1)
>         ) ;
>
>         applyluminositygroup ("test") (
>             fill (unitsquare scaled 2cm) shifted (1cm,1cm)
>                 withshademethod "circular"
>         ) ;
>
>         draw luminositygroup (
>             fill (unitsquare scaled 2cm) shifted (4cm,1cm)
>                 withshademethod "circular"
>                 withshadecolors (.6,.1)
>         ) (
>             fill (unitsquare scaled 2cm) shifted (4cm,1cm)
>                 withshademethod "circular"
>         ) ;
>
>         draw luminosityshade (
>             (unitsquare scaled 2cm) shifted (7cm,1cm)
>         ) (
>                 withshademethod "circular"
>                 withshadecolors (.6,.1)
>         ) (
>                 withshademethod "circular"
>         ) ;
>     ) ;
>
> \stopMPpage
>
> Not that intuitive and a bit ugly deep down but it works (there was no 
> need to extend mp btw as we already have graphic grouping in the engine).
>
> Hans
>
>
> -----------------------------------------------------------------
>                                           Hans Hagen | PRAGMA ADE
>               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist :ntg-context@ntg.nl  /https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  :https://www.pragma-ade.nl  /https://context.aanhet.net  (mirror)
> archive  :https://github.com/contextgarden/context
> wiki     :https://wiki.contextgarden.net
> ___________________________________________________________________________________

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[-- Type: text/plain, Size: 21231 bytes --]

system          > 
system          > ConTeXt  ver: 2024.01.24 22:39 LMTX  fmt: 2024.3.10  int: english/english
system          > 
system          > 'cont-new.mkxl' loaded
open source     > level 1, order 1, name 'C:/Users/adeim/context/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
system          > beware: some patches loaded from cont-new.mkiv
close source    > level 1, order 1, name 'C:/Users/adeim/context/tex/texmf-context/tex/context/base/mkxl/cont-new.mkxl'
system          > files > jobname './ctx-test-MetaPost-pdf', input './ctx-test-MetaPost-pdf.tex', result './ctx-test-MetaPost-pdf'
fonts           > latin modern fonts are not preloaded
languages       > language 'en' is active
open source     > level 1, order 2, name './ctx-test-MetaPost-pdf.tex'
fonts           > preloading latin modern fonts (second stage)
fonts           > 'fallback modern rm 12pt' is loaded
structure       > sectioning > chapter @ level 2 : 0.1 -> MetaPost
pages           > flushing realpage 1, userpage 1, subpage 1
metapost        > initializing instance 'metafun:1' using format 'metafun' and method 'double'
metapost        > loading 'metafun' as 'C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/metafun.mpxl' using method 'double'
metapost        > initializing number mode 'double'
metapost        > trace > This is MPLIB for LuaMetaTeX, version 3.14, running in double mode.
metapost        > trace > 
metapost        > trace > loading metafun for lmtx, including the plain 1.004 base definitions
metapost        > trace > 
pages           > flushing realpage 2, userpage 2, subpage 2
structure       > sectioning > chapter @ level 2 : 0.2 -> Hans tricky drawing
pages           > flushing realpage 3, userpage 3, subpage 3
metafun         > log >
metafun         > log > error: Isolated expression
metafun         > log >
metapost        > trace > <error> registerluminositygroup
metapost        > trace > <to be read again> (
metapost        > trace > <argument> fill ( unitsquare xscaled 10 cm yscaled 4 cm ) withcolor svgcolor ( 0.5 , 0 , 0 ) ; registerluminositygroup ( "test" ) ( fill ( unitsquare scaled 2 cm ) shifted ( 1 cm , 1 cm ) withshademethod "circular" withshadecolors ( 0.59999999999999998 , 0.10000000000000001 ) ) ; applyluminositygroup ( "test" ) ( fill ( unitsquare scaled 2 cm ) shifted ( 1 cm , 1 cm ) withshademethod "circular" ) ; draw luminositygroup ( fill ( unitsquare scaled 2 cm ) shifted ( 4 cm , 1 cm ) withshademethod "circular" withshadecolors ( 0.59999999999999998 , 0.10000000000000001 ) ) ( fill ( unitsquare scaled 2 cm ) shifted ( 4 cm , 1 cm ) withshademethod "circular" ) ; draw luminosityshade ( ( unitsquare scaled 2 cm ) shifted ( 7 cm , 1 cm ) ) ( withshademethod "circular" withshadecolors ( 0.59999999999999998 , 0.10000000000000001 ) ) ( withshademethod "circular" ) ;
metapost        > trace > <macro> image -> (TEXT3)-> begingroup.save.currentpicture;picture.currentpicture;currentpicture:=nullpicture;(TEXT3);currentpicture.if.str(SUFFIX2)<>"":shifted(mfun_labxf(SUFFIX2)*lrcorner.p+mfun_labyf(SUFFIX2)*ulcorner.p+(1-mfun_labxf(SUFFIX2)-mfun_labyf(SUFFIX2))*llcorner.p)fi.endgroup
metafun         > log >
metafun         > log > I couldn't find an '=' or ':=' after the expression that is shown above this
error message, so I guess I'll just ignore it and carry on.
metafun         > log >
metapost        > trace > <direct>  draw image ( fill (unitsquare xscaled 10cm yscaled 4cm) withcolor svgcolor(0.5,0,0) ; registerluminositygroup ("test") ( fill (unitsquare scaled 2cm) shifted (1cm,1cm) withshademethod "circular" withshadecolors (.6,.1) ) ; applyluminositygroup ("test") ( fill (unitsquare scaled 2cm) shifted (1cm,1cm) withshademethod "circular" ) ; draw luminositygroup ( fill (unitsquare scaled 2cm) shifted (4cm,1cm) withshademethod "circular" withshadecolors (.6,.1) ) ( fill (unitsquare scaled 2cm) shifted (4cm,1cm) withshademethod "circular" ) ; draw luminosityshade ( (unitsquare scaled 2cm) shifted (7cm,1cm) ) ( withshademethod "circular" withshadecolors (.6,.1) ) ( withshademethod "circular" ) ; ) ; ;
metapost        > trace > 
pages           > flushing realpage 4, userpage 4, subpage 4
close source    > level 1, order 2, name './ctx-test-MetaPost-pdf.tex'
backend         > xmp > using file 'C:/Users/adeim/context/tex/texmf-context/tex/context/base/mkiv/lpdf-pdx.xml'
system          > start used files
system          > text: ctx-test-MetaPost-pdf
system          > stop used files
system          > start used files
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system          >    5: filename=C:\Users\adeim\context\Travail\tests/ctx-test-MetaPost-pdf.tex format=tex foundname=C:/Users/adeim/context/Travail/tests/ctx-test-MetaPost-pdf.tex fullname=C:/Users/adeim/context/Travail/tests/ctx-test-MetaPost-pdf.tex usedmethod=direct
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system          >   17: filename=mp-mlib.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-mlib.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-mlib.mpxl usedmethod=database
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system          >   30: filename=mp-abck.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-abck.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-abck.mpxl usedmethod=database
system          >   31: filename=mp-asnc.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-asnc.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-asnc.mpxl usedmethod=database
system          >   32: filename=mp-blob.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-blob.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-blob.mpxl usedmethod=database
system          >   33: filename=mp-lmtx.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-lmtx.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-lmtx.mpxl usedmethod=database
system          >   34: filename=mp-text.mpxl filetype=mp foundname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-text.mpxl fullname=C:/Users/adeim/context/tex/texmf-context/metapost/context/base/mpxl/mp-text.mpxl usedmethod=database
system          >   35: filename=smile.svg foundname=smile.svg fullname=C:/Users/adeim/context/Travail/tests/smile.svg usedmethod=direct
system          >   36: filename=lpdf-pdx.xml filetype=tex foundname=C:/Users/adeim/context/tex/texmf-context/tex/context/base/mkiv/lpdf-pdx.xml fullname=C:/Users/adeim/context/tex/texmf-context/tex/context/base/mkiv/lpdf-pdx.xml usedmethod=database
system          > stop used files
system          > start commandline options
system          >   currentrun="1"
system          >   fulljobname="./ctx-test-MetaPost-pdf.tex"
system          >   input="./ctx-test-MetaPost-pdf.tex"
system          >   kindofrun="1"
system          >   maxnofruns="9"
system          >   texmfbinpath="C:/Users/adeim/context/tex/texmf-win64/bin"
system          > stop commandline options
system          > start commandline files
system          >    1: ./ctx-test-MetaPost-pdf.tex
system          > stop commandline files
modules         > start used modules
modules         > stop used modules
system          > 
system          > status after finishing run
system          > 
system          >   -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
system          >           string       pool       hash     lookup       node      token     buffer      input       file       nest  parameter       save       font   language       mark     insert
system          >   -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
system          >   max    2097152  100000000    2097152    2097152  100000000   10000000  100000000     100000       2000      10000     100000     500000     100000      10000      10000        500
system          >   min     150000   10000000     150000     150000    2000000    1000000    1000000      10000        500       1000      20000     100000        250        250         50         10
system          >   set     500000   10000000     250000     250000   50000000   10000000   10000000     100000       2000      10000     100000     500000     100000        250        250        250
system          >   stp     100000    1000000     100000     100000     500000     250000    1000000      10000        250       1000      10000      10000        250        250         50         25
system          > 
system          >   mem     150000     971734     150000               2000000    1000000    1000000      10000        500       1000      20000      10000    7401088         96       1200        320
system          >   all    2400000     971734    2400000              18000000    8000000    1000000     320000      16000      88000      80000     160000    7401088         96      28800      10240
system          > 
system          >   ini    2145984     927347          0      48815          0     541251                                                                                       0                      
system          >   ptr      50727                 10311      50710                578519          0          5          0          0          0          0         20          0         28          7
system          >   top      50728                807100     131074      21440     575953        341         42          5         12         43        301        250        250         50         10
system          >   -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
system          > 
system          >   current input type    : initial
system          > 
system          >   approximate memory    : 44350014 (42 MB)
system          > 
system          >   expansion depth       : min: 10000, max: 1000000, set: 10000, top: 6
system          > 
system          >   luabytecode registers : 1015
system          >   luabytecode bytes     : 16256 (0 MB)
system          >   luastate bytes now    : 65596258 (62 MB)
system          >   luastate bytes max    : 65596258 (62 MB)
system          > 
system          >   file callbacks        : 129
system          >   saved callbacks       : 715
system          >   direct callbacks      : 4
system          >   function callbacks    : 826
system          >   value callbacks       : 436
system          >   message callbacks     : 0
system          >   bytecode callbacks    : 620
system          > 
system          >   mp instances          : 1
system          >   mp estimated memory   : 4212312 (4 MB)
system          >   mp file callbacks     : 13879
system          >   mp text callbacks     : 0
system          >   mp script callbacks   : 393
system          >   mp log callbacks      : 1138
system          > 
system          >   total callbacks       : 2730
system          >   mp total callbacks    : 15411
system          >   backend callbacks     : 0
system          > 
mkiv lua stats  > used config file: selfautoparent:/texmf/web2c/texmfcnf.lua
mkiv lua stats  > used cache path: C:/Users/adeim/context/tex/texmf-cache/luametatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e
mkiv lua stats  > resource resolver: loadtime 0.022 seconds, 0 scans with scantime 0.000 seconds, 0 shared scans, 36 found files, scanned paths: <none>
mkiv lua stats  > stored bytecode data: 515 modules (0.182 sec), 105 tables (0.016 sec), 620 chunks (0.198 sec)
mkiv lua stats  > traced context: maxstack: 1748, freed: 2, unreachable: 1746
mkiv lua stats  > cleaned up reserved nodes: 74 nodes, 7 lists of 437
mkiv lua stats  > node memory usage: 9 attribute, 3 glue, 131 gluespec, 1 kern, 645 mathspec, 4 penalty, 2 temp
mkiv lua stats  > node list callback tasks: 16 unique task lists, 10 instances (re)created, 293 calls
mkiv lua stats  > used backend: pdf
mkiv lua stats  > jobdata time: 0.003 seconds saving, 0.001 seconds loading
mkiv lua stats  > callbacks: file: 129, saved: 715, direct: 4, function: 826, value: 436, message: 0, bytecode: 620, late 0, total: 2730 (683 per page)
mkiv lua stats  > randomizer: resumed with value 0.95189229949769
mkiv lua stats  > loaded patterns: en::1, load time: 0.000
mkiv lua stats  > loaded fonts: 3 files: latinmodernmath-companion.otf, latinmodern-math.otf, lmroman10-regular.otf
mkiv lua stats  > font engine: otf 3.135, afm 1.513, tfm 1.000, 14 instances, 9 shared in backend, 4 common vectors, 5 common hashes, load time 0.231 seconds 
mkiv lua stats  > metapost: 0.006 seconds, loading: 0.076, execution: 0.006, n: 4, average: 0.022, instances: 1, luacalls: 15411 (file: 13879, text: 0, script: 393, log: 1138), memory: 4.017 M
mkiv lua stats  > math tweaking time: 0.097 seconds, 12 math goodie tables
mkiv lua stats  > graphics processing time: 0.003 seconds including tex, 1 processed images, 1 unique asked, 0 bad names
mkiv lua stats  > font embedding time: 0.007 seconds, 1 fonts
mkiv lua stats  > result saved in file: ctx-test-MetaPost-pdf.pdf, compresslevel 1, objectcompresslevel 3, 12 streams, 4 uncompressed, 6 compressed, 2 not compressed, threshold 40
mkiv lua stats  > positions: 4 collected, 0 deltas, 0 shared partials, 0 partial entries
mkiv lua stats  > used platform: win64, type: windows, binary subtree: texmf-win64
mkiv lua stats  > used engine: luametatex version: 2.10.11, functionality level: 20240124, format id: 700, compiler: gcc
mkiv lua stats  > tex properties: 807100 hash slots used of 2097152, 50710 control sequences, approximate memory usage: 42 MB
mkiv lua stats  > lua properties: engine: lua 5.4, used memory: 65 MB, ctx: 62 MB, max: 62 MB, symbol mask: utf (τεχ)
mkiv lua stats  > runtime: 0.675 seconds, 4 processed pages, 4 shipped pages, 5.924 pages/second

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