Because the pickers are called with an Activate()/Wait() pair, any
usurping tool gets in between the picker handling the cancel (due
to activation) and the picker client doing a PopTool(). The new
tool is therefore pushed before the old tool is popped.
Fixes: lp:1835907
* https://bugs.launchpad.net/kicad/+bug/1835907
This removes unused static function in page layout editor, unused
variable in pcb_painter and restors the gcc unitialized fix for
pcbnew's drawing_tool.
Includes the addition of an onSetCursor() handler which must be called
from both the GAL canvas AND the GAL backend (at least on OSX) to prevent
cursor flickering between (for instance) pencil and arrow.
Also includes new architecture for point editors which allows them to
coordiate cursors with the editing tools (so we can switch to an arrow
when over a point).
We were running into various corner conditions where a tool's event
loop would exit while the tool was still active, or the tool would
get popped while we were still in the event loop. (A lot of these
had to do with the POINT_EDITOR's, but not all of them.)
The new architecture:
1) tools always do a Push()/Pop()
2) everyone is responsible for their own pops; no more stack-clearing
on a cancel
3) CancelInteractive events go to all tools to facilitate (2)
It's a bit of a hack because they're statically initialized and
so we can't make use of the _() macro. We do still want it in the
code, however, because the string harvesting is based off of it.
Fixes: lp:1833000
* https://bugs.launchpad.net/kicad/+bug/1833000
Jeff Young
Seth Hillbrand
jean-pierre charras