Update the embedded svglite implementation

thomasp85 commented 3 years ago

This PR updates the embedded graphic device to be based off the latest svglite version. Major changes

Rcpp has been removed in favour of cpp11
gdtools, BH, freetypeharfbuzz etc is no longer needed
String dimension calculations are based on an inlined map of glyph dimensions extracted from Liberation and Symbola
Small tweak to the toggle UI to make sure sizing of old and new test cases are the same

There is practically no visual difference in the output, except for a point sizing bug that has been fixed and now show points and circles in the correct size (slightly smaller). The textual difference is of course stark

There are failing tests mainly because I don't know how to update the test setup

thomasp85 commented 3 years ago

The engine version are now written into the svgfile as a top level data attribute. It is accessible in javascript directly through the dataset map of the svg element, e.g. SVGElement.dataset.engineVersion

lionel- commented 3 years ago

Thanks!

r-lib / vdiffr

Update the embedded svglite implementation #106