We cannot resolve the Canvas type without the canvas being initialized.
But saving settings sometimes requests canvas access. This protects the
calls against failure by checking for canvas before saving
canvas-specific settings
Fixes https://gitlab.com/kicad/code/kicad/issues/9729
Calling UpdateItem() may be performed by in a common loop, e.g. for(
SCH_ITEM* item : GetScreen()->Items() ) or similar. We cannot call
GetScreen()->Update( SCH_ITEM* ) in this routine as it will remove and
re-add the item to the RTree, invalidating iterators. If needed, the
items need to be cached to an external container before updating
Fixes https://gitlab.com/kicad/code/kicad/issues/9318
1) Generalize SCH_ITEM owners (SCH_COMPONENT, SCH_SHEET, and now
SCH_GLOBALLABEL)
2) Generalize hypertext items
3) Use SCH_FIELD autoplace infrastructure for placing intersheet
references
4) Use textVar infrastructure for buildin intersheet references.
As an important side-effect this also fixes the undo issues with
intersheet refs.
Switch Eeschema to use the built-in printing routines
because its precisions are close to those and it is
cleaner.
Give mils a precision of 2 decimal places to match
the precision shown in inches.
ADDED new rectangle graphics tool for PCBNew and Footprint Editor.
Also adds rectangle tool to both Footprint Editor and PCBNew Place
menus.
The Aux Origin tool can come back once we have multi-select toobar
buttons.
Also collapses an unnecessary level out of the auxOrigin and gridOrigin
settings.
Fixes https://gitlab.com/kicad/code/kicad/issues/2246
Set up a new lineage for SCH_ITEMS to get back to the SCHEMATIC
they live on: Items will all be parented to the SCH_SCREEN that
they are added to, and each SCH_SCREEN will point back to the
SCHEMATIC that it is part of. Note that this hierarchy is not
the same as the actual schematic hierarchy, which continues to
be managed through SCH_SHEETs and SCH_SHEET_PATHS.
Also fixes a bug where a bunch of eeschema settings weren't getting
loaded because it looked like they were larger than the max value
(which wasn't being scaled from mils to internal units).
Fixes https://gitlab.com/kicad/code/kicad/issues/2089
Some graphic line thickness were initialized to 0.
The actual line thickness is set after reading config.
But in some cases the config does not exist, and 0 line thickness creates draw issues.