This ensures that checkboxes drawn in the Elements UI of the sketcher
can be styled using the correct style.
Three changes are introduced:
1. paint() method uses style provided by the widget, not application.
2. Indicator is drawn using PE_IndicatorCheckBox not CE_CheckBox - it
allows to use ::indicator in qss to style it properly. This works the
same as TreeView.
3. Fix for minor issues with text alignement and extension of selected items
background to cover checkbox. This is how other controls of this kind
work.
* Restores Arch_Axis bubbles in a TechDraw_ArchView. This fixes a regression in V0.21 and 0.22, I suspect an unwanted side-effect of a previous PR of mine (#8688).
* Also fixes the linetype of axes and other annotation objects in a TechDraw_ArchView.
Follow-up PR of #11940.
* The new ui layout follows that of the Draft preferences.
* The ConversionFast checkbox enables/disables the 3 preferences listed below it.
* The WindowColor preference was removed. It is not a per-object, or even a per-file setting. The fix in #11940 would change windows in existing projects when they are recomputed. It is therefore better to keep the V0.21 solution where the glass is colored according to the preferences and the rest of the window receives a color based on its ShapeColor. Users who want to apply specific colors can use a multi-material.
Additionally 2 Arch_Window bugs were fixed:
* If the W1 value was changed the box tracker was not repositioned relative to the cursor.
* The WindowColor was not applied because of a typo in the code. De current default color is quite dark BTW.
Note that all dimensional values that were not really defaults, but just the last entered values, have been removed from preferences-archdefaults.ui. As a result the layout looks a bit strange. That will be improved in a next PR.
In a previous PR of mine I have reorganized some lines of code in DraftGui.py without realizing that this would reposition checkboxes. This PR fixes that.
Renamed to makeElementCompound and modified as little as possible to get it to compile in the new framework. All required auxilliary methods are also brought in.
