8 commits

Author	SHA1	Message	Date
Paul Davis	52718b3411	some initial bits of work on canvas allocation	2017-02-01 21:58:20 +01:00
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	b4cf8cfc49	fix up Canvas::Grid child layout	2017-01-19 00:24:54 +01:00
Paul Davis	09a8ec534f	canvas::grid: get padding and margin to work; remove some debug output	2017-01-15 21:40:42 +00:00
Paul Davis	7c17327f56	get grid layout working	2017-01-15 12:13:03 +00:00
Paul Davis	04e346a3d8	tweak Grid repositioning code to be a little more O(N)	2017-01-15 12:13:03 +00:00
Paul Davis	99b86f0f05	basic (and probably wrong) Canvas::Grid child placement	2017-01-15 12:13:03 +00:00
Paul Davis	9ed87f6693	initial skeleton for a Grid canvas item	2017-01-15 12:13:03 +00:00