So that we don't need to query the geometry multiple time, and this pave
the way to not have the geometry in the items
Part of #1932
As a drive by, fix the clipping of the Path element which incorrectly
offseted the clip by (x,y).
Similar fixes happen in the Clip element in some renderer, but that
didn't have effect because x and y are always 0 for the Clip element
- This allows creating the Skia GL interface without string allocations
- Port the item renderer to use SkImageFilters::Shader instead of
SkImageFilter::Paint
Return the path events for rendering as an Option, so that if the path is empty,
we simply return.
This avoids a double property dependency in the (likely) event the path is not empty.
Instead of the ClippedImage. Because we use the colorize property more
often than the source property, and these are soon going to be even more
expensive
Commit f66a2a5775 and dc048a11db introduced
the regression of issue #1985 where in adjust_rect_and_border_for_inner_drawing
instead of subtracting the entire border width from the size,
only half of it was subtracted,
leaving an inner area of the rectangle visible.
Fixes#1985
The crate is an internal crate until the API has been polished and
documented, after which we can call slint-renderer-skia for example.
This also duplicates a little bit of the glutin setup code, because
that would otherwise have to go into another shared crate.
