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
Was used for depth shading but had neglibile impact and couldn't be
effectively edited. We might add SVG effects to recreate this but
removing for now.
CHANGED: Highlight net tool changed to highlight display toggle; moved to left toolbar
CHANGED: Multi-net highlight is now accessible when using the highlight net action
ADDED: Highlight Net and Clear Highlight actions to Net Tools context menu
ADDED: Default hotkey (Ctrl+`) for toggling net highlighting
The current and previous net highlight state are now stored and can be toggled
on or off with an action (no hotkey by default).
Highlight is now treated as a persistent state rather than a tool that is entered,
meaning there is no longer a special tool to enter in order to highlight nets.
Highlighting can be controlled while any other tool is active using the hotkeys
or context menu on a net object.
Tweak the icons for highlight net and layer display mode to better disambiguate them.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/8250
2 files were accidentally committed with CC-NC-SA-4 licenses. These
were duplicated into additional files. This corrects the license to
the intended variant.
This allows for color changes and scaling of the arrow
when the display needs it (e.g. HiDPI displays).
Also make the arrow and text respond to if the window is
active to mimic native controls.
Fixes https://gitlab.com/kicad/code/kicad/issues/6042
Bitmaps are now identified by an enum class instead of by pointers.
Bitmap loading and caching is now handled by a class in common, and
we no longer compile most bitmaps into the binary, so there is no
longer a bitmaps static library.
Instead, bitmaps are archived to a .tar.gz file which is installed
in ${KICAD_DATA}/resources/images.tar.gz
The source PNGs are checked in to Git as the original CPP files were,
so that people can build without the required dependencies to convert
SVGs to PNGs.
Initial support is also added for dark theme icons, although this
is not yet exposed in the GUI.
Stubs are present for multi-resolution image resources, but this is
not fully-baked yet and could use some refinement.