5 Commits

Author	SHA1	Message	Date
Paul Davis	4fa4b9a135	remove use of boost::optional to define "undefined" Canvas::Rect, and use Rect::empty instead. ... This commit includes Rect::operator bool() which might be a candidate for removal in a future commit, in an attempt to make the meaning clearer	2017-01-19 20:54:54 +01:00
Paul Davis	c8ae41d598	fix errors reported by pixman for meter redraws (and add more comments to help the coordinate challenged	2016-09-28 13:37:19 -05:00
Paul Davis	df5bb70616	optimize canvas meter redrawing (as in the non-canvas version)	2016-09-27 14:59:32 -05:00
Paul Davis	1c94f6490e	bug fixes for vertically-drawn Canvas::Meter	2016-09-27 14:59:32 -05:00
Paul Davis	29b8072555	add canvas-based Meter object	2016-09-27 14:59:32 -05:00