There's no reason to restrict it to a texture; any paintable should
work, and this gives us more flexibility in the future.

James Westman authored Jul 29, 2022 and Marcus Lundblad committed Jul 29, 2022

Fixes #45.

gtk_widget_measure needs to be called during the parent's size_allocate,
even if the results aren't used.

Smooth the lines used for glyph layout so that the labels are legible.

Use the shape of a line symbol to calculate collision, rather than just
its bounding box. This is much more precise and allows showing many more
labels at once.

Removed the collision tests, because these changes make them much more
complicated.

Use the Separating Axis Theorem to calculate rectangle intersection so
we can handle rotated bounding boxes correctly.

Fixed a bug where lookup expressions sometimes weren't inserted where
needed.

James Westman authored Apr 26, 2022 and Marcus Lundblad committed May 27, 2022

Get tile URLs, min/maxzoom, etc. from the style JSON rather than
supplied separately. Stylesheets should already contain this
information, so it's better to not duplicate it.

Removed ShumateVectorRenderer:data-source, since styles can potentially
have multiple data sources (although it's not supported yet).