Inkscape can export the gradients to PDF. I was hoping to eliminate Inkscape as an extra piece of software users have to download to make sure their SVG images are rendered correctly. By containerizing ConTeXt, MetaPost can be swapped for Inkscape, so users won't even know. It is, however, a minor duplication to have two programs that can convert SVG to PDF. (And Inkscape will bloat the container size.)
For my images, at least, gradients are one of the last features needed to render them correctly using MetaPost. The other is font rendering in some cases will be incorrect (e.g., try using Roboto with weight 100). If we have to use Inkscape to ensure tat all SVG images are rendered correctly, then we'd only want to use MetaPost if we know that the images don't contain gradients, or would you recommend avoiding MetaPost altogether for SVG conversion? Thank you! On Wed, Dec 14, 2022 at 12:46 AM Hans Hagen via ntg-context <ntg-context@ntg.nl> wrote: > > On 12/14/2022 5:46 AM, Thangalin via ntg-context wrote: > > Hi there! > > > > Any thoughts on implementing SVG gradients in MetaPost? > > > > % SOF > > \startbuffer[csvg] > > <svg xmlns="http://www.w3.org/2000/svg"; > > xmlns:xlink="http://www.w3.org/1999/xlink"; viewBox="0 0 115.669 > > 115.669"><defs><radialGradient xlink:href="#a" id="b" cx="124.515" > > cy="167.114" r="57.834" fx="124.515" fy="167.114" > > gradientTransform="translate(-17.77 -18.4)" > > gradientUnits="userSpaceOnUse"/><linearGradient id="a"><stop > > offset="0"/><stop offset="1" > > stop-opacity="0"/></linearGradient></defs><g > > transform="translate(-48.91 -90.879)"><path fill="red" > > fill-opacity=".5" d="M48.769 90.936H164.64V206.96H48.769z"/><circle > > cx="106.745" cy="148.713" r="57.834" fill="url(#b)" > > fill-rule="evenodd"/></g></svg> > > \stopbuffer > > > > \starttext > > \placefigure{}{\includesvgbuffer[csvg][conversion=mp]} > > \stoptext > > % EOF > > > > See attached a comparison of the PDF generated using ConTeXt and the > > PNG file generated by exporting from Inkscape. > these gradients definitions get crazier by the day ... does inkscape > output a bitmap or vector pdf > > given what we do with context i'm not sure we should support everything > that pops up (mapping all onto mp and then pdf ...) > > 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://www.ntg.nl/mailman/listinfo/ntg-context > webpage : https://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : https://contextgarden.net > ___________________________________________________________________________________
inkscape-gradient.pdf
Description: Adobe PDF document
___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________
