1) Generate refreshPreview events so the modern toolset doesn't
fall behind by one event (see LP:1818667)
2) In the legacy toolset don't call unimplemented routines and don't
snap to grid on the non-movement axis.
Put the cursor and pan control TOOL_ACTIONs in ACTION,
and refer to them in that way.
The handlers are currently identical in Pcbnew and Cvpcb,
and Gerbview (and all canvases) can benefit from them as well
if they are in libcommon. Also saves duplicated code.
Fixes: lp:1795855
* https://bugs.launchpad.net/kicad/+bug/1795855
Add Display Settings to Footprint Browser.
Make each of them OpenGL on OSX and Cairo on other platforms.
Allow auto-zoom to be turned off and save last zoom setting.
Make ordering of tools in htoolbar consistent.
Standardize grid and zoom drop-downs.
Fixes: lp:1791667
* https://bugs.launchpad.net/kicad/+bug/1791667
This is used to provide menu entries that allows cancellation of
interactive drawing and routing tools without needing the keyboard.
It is provided in the drawing tools and the router tool.
The cancel event doesn't have any new functionality (e.g. track rip-up
for the PNS router - lp:1448460), this just adds it to the menu, where
it behaves the same as an Escape keypress.
Some grid/zoom tools are left in PCBNEW_CONTROL because they currently
depend on Pcbnew-specific class members. Once refactoring is done to
make it possible to use all zoom and grid controls outside of pcbnew,
these last tools can be moved to common to match their ACTIONs.
Jeff Young
John Beard
Jon Evans