This is a convenience function around cairo_clip_extents(). It rounds the clip extents to integer coordinates and returns a boolean indicating if a clip area exists.
a cairo context
return location for the clip, or %NULL
%TRUE if a clip rectangle exists, %FALSE if all of @cr is clipped and all drawing can be skipped
See Implementation
This is a convenience function around cairo_clip_extents(). It rounds the clip extents to integer coordinates and returns a boolean indicating if a clip area exists.