[NTG-context] SVG text alignment issue

[Aditya Mahajan]

On Mon, 27 Jun 2022, Thangalin via ntg-context wrote:

> In the following example, the line and text should be aligned to the
> middle  when LMTX converts the SVG figure using MP. (Note that you may have
> to install Roboto, but the font isn't the issue.)
> 
> % SOF
> \startbuffer[svg]
> <svg
>    width="25mm"
>    height="70mm"
>    viewBox="0 0 25 70"
>    xmlns="http://www.w3.org/2000/svg"
>    xmlns:svg="http://www.w3.org/2000/svg">
>   <path
>      d="m 12.500001,63.971412 v -12.4787"
>      id="path2"
>      style="fill:none;fill-opacity:1;stroke:#000000;stroke-opacity:1" />
>   <text
>      x="-48.831322"
>      y="15.60547"
>      id="text4933-8-6"
>      transform="rotate(-90)"
> 
>  style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;font-family:Roboto;-inkscape-font-specification:'Roboto,
> Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal"><tspan
>        id="tspan159594-1"
>        x="-48.831322"
>        y="15.60547"
> 
>  style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:12px;font-family:Roboto;-inkscape-font-specification:'Roboto,
> Normal';font-variant-ligatures:normal;font-variant-caps:normal;font-variant-numeric:normal;font-variant-east-asian:normal">16p13.3</tspan></text>
> </svg>
> \stopbuffer
> 
> \starttext
>    \placefigure[]{}{\includesvgbuffer[svg][conversion=mp]}
> \stoptext
> % EOF

This has nothing to do with SVG. Looking at the definition of \includesvgbuffer, here is a simpler example illustrating the issue:

    \starttext
    \startplacefigure[location=here, title={Test}]
      \dontleavehmode\begingroup
      \startMPcode
        draw fullcircle scaled 2cm;
      \stopMPcode\endgroup
    \stopplacefigure
    \stoptext

One way to "fix" the alignment is to wrap everything in an hbox:


   \placefigure[]{}{\hbox{\includesvgbuffer[svg][conversion=mp]}}

Maybe there is a simple way to modify the definition of includesvgbuffer so that an \hbox is not needed.


Aditya