Nyall Dawson b41f3a7860 [composer] Don't use canvas map settings to determine canvas layers
Instead make the layer tree canvas bridge advise on layer set
changes, and tie this into composer. So now composer acts
as a go-between to sync the composer map item's layer set to
the layer tree/canvas layers.

It's not an ideal solution, but avoids the hard link between
compositions and the map canvas.
2017-01-24 12:24:33 +10:00
..