User:Tsingi

I've started contributing to InkScape in my own way, I have made a dent on a filter to sanitize InkScape.

• Wiki profiler page: Save_Cleaned_SVG
• islint at SourceForge

My motives are purely selfish. I'm one of the authors of SVG, I work with SVG, and I find InkScape to be an excellent tool, but I spend a lot of time editing InkScape output with vi to clean it up for use in dynamic web apps (mostly). A task with very low entertainment value. Writing filters is more fun.

islint is pretty useful to me as is now, it has a way to go before it will serve as a general filter for InkScape.

This is the wrong place to do this, but it will serve for now...

islint

Wiki Notes Annotated

In italics is a copy of the Cleaning Operations list from the Save_Cleaned_SVG page

My notes are formatted like this.

• Specify a limit to the precision of all positional elements.

DONE trimming precision was my first priority.  precision can be set to -1 (off) or 0..9.  islint gives an extra decimal to transformation floats, so if you set prec=1, a matrix will have values to two decimal places.  This is to preserve a little sanity at a low cost should there be nested transforms.

• Clean up XML Elements
  • Collapse multiple redundant groups

Not done, easy, Low priority.

• • Remove empty tags, such as defs or metadata.

Not done, easy, Low priority.

• • Remove id tags for elements not referenced

Not done, easy I like to have an id on everything.  I usually want something more useful than path1234, but that requires either human intervention, or a targeted generator.  I can add it as an option, low priority

• Clean up Definitions

Not done, moderate, low priority Generally I think this section needs a bit of work. I don't use InkScape for gradients at all, but I could. InkScape creates a lot of gradients and creates and references linear gradients when it needs a radial gradient. It should be possible to do a lot of cleanup here.

• • Remove unused definitions
  • Remove duplicate gradient stops
  • Collapse duplicate gradient definitions
  • Remove gradients that are only referenced by one other gradient
• Clean up CSS
  • Remove Default values, i.e. opacity: 1;
  • Remove Not applicable values, i.e. opacity: 0; fill-color: #00000;
  • Convert RGB colours from RGB(r,g,b) to #RRGGBB format
  • Convert RGB colours from #RRGGBB to #RGB if possible
• Clean up paths
  • Detect vertical/horizontal lines and replace.
  • Eliminate empty path segments
  • Eliminate last segment in a polygon
  • Collapse straight curves.
  • Convert absolute path segments to relative ones.
• Process Transformations
  • Process quadratic Bezier curves
  • Collapse all group based transformations
• Convert known properties to element attributes
  • css to element attributes
• Output Standard SVG
  • Remove inkscape namespace
  • Remove sodipodi namespace
  • Remove adobe namespace
  • Use viewPort instead of document width/height