Fixes:
* Various special cases around junctions on pins and dragging.
* Some rotations of endpoints resulting in a 45 degree rotate.
* Some cases where it was possible to get a line with neither
endpoint selected, and also substractive unselecting only one of two
selected endpoints unselecting both.
* Use line midpoint for sorting. Start and endpoints aren't
consistent in the order they appear on the X or Y axis. So,
we need to use the midpoint for our position for consistent
sorting when dragging groups of parallel lines where some
have the start and end reversed.
Other:
* Rename TEMP_SELECTED TO SELECTED_BY_DRAG. This is the actual meaning
of the flag, and should reduce confusion as
to when it should be used.
* Move usage of TEMP_SELECTED as an algorithmic mark to CANDIDATE
instead.
* Fix mistaken clearing of START_POINT and ENDPOINT.
* Move endpoint setting and clearing out of narrowSelection, and into
selectPoint and selectMultiple.
* Don't show dangling end warnings on new lines
Also fixes some plot bugs with arcs.
Also moves polygonization of arcs (when required) in plotting code
from 5 degrees to calculated based on ARC_HIGH_DEF.
Fixes https://gitlab.com/kicad/code/kicad/issues/5017
SHAPE_LINE_CHAIN will, by default, remove duplicate points when
appending. We don't want to do this when constructing our polygons in
symbol editor, so we need to explicitly call the routine without
deduplication
Fixes https://gitlab.com/kicad/code/kicad/issues/10289
(cherry picked from commit 62f8603353)
When leaving the main point editor loop, we need to ensure that the edit
point is cleared as well. This is usually cleared by a ClearEvent call
but in case this is missed, we need to ensure that other tools are not
caught out
Fixes https://gitlab.com/kicad/code/kicad/issues/10288
(cherry picked from commit 9a2332dfcf)
ADDED arc, circle and rectangle shapes for schematic. Shapes support
line styles and fill colors.
CHANGED sheet background color in Edit Text & Graphics Properties to
fill color (and it now affects shapes).
Pushed STROKE_PARAMS down into common and moved all shapes to using it
for stroke descriptions.
We had some spurious bugs where both ends would get dragged to a
single point (making them disappear). While I never caught it
in the debugger, I'm guessing that the flags weren't getting
cleared properly or were getting overwritten or something. Anyway,
it now uses std::pair instead.
Fixes https://gitlab.com/kicad/code/kicad/issues/6550
Fixes https://gitlab.com/kicad/code/kicad/issues/6431