This ensures that when starting to draw a zone or graphic element, the
preview is drawn in the same color/on the same layer as the element that
will be created. Previously, beginning a graphic polygon while a copper
layer was active would result in the preview being drawn in the color of
the active copper layer.
Also includes a bunch of changes to simplifiy the terminology
and unify the copper, non-copper and keepout versions.
Also removes some legacy features:
Removes contol for fill method. If the fill method is currently
segments the dialog will ask if you want to convert to polygons
on OK.
Removes control of boundary resolution. We've done this with trig
since 5.0.
(cherry picked from commit 487aaeb)
The zone creation in DRAWING_TOOL was a complex event loop whici
simultaneously managed the event handling, construction of the preview
polygon and the creation and commiting of the zone, all in the same
scope. This has been broken into several pieces:
* POLYGON_ITEM preview item, used to preview the polygon in progress
* POLYGON_GEOM_MANAGER is a class that collects points from user input
and used them to describe a polygon's geometry, including calculation
of 45-degree constrained leader lines
* ZONE_CREATE_HELPER is a class which deals with creating zones based on
geometry from a geometry manager and parameters from the DRAWING_TOOL
* The (much simpler) event loop in DRAWING_TOOL drives the
POLYGON_GEOM_MANAGER. With a minor refactor, this loop can be reused
in future for other polygonal tools if wanted.
The polygon preview now has a translucent fill which makes it easier to
visualise the zone.
This also adds the Close Zone Outline and Delete Last Corner actions as
part of the new event loop.
Fixes: lp:1663885
* https://bugs.launchpad.net/kicad/+bug/1663885
Fixes: lp:1667885
* https://bugs.launchpad.net/kicad/+bug/1667885
Seth Hillbrand
Jeff Young
John Beard