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Sometimes it happens that malformed constraints are arrived to.
Example:
https://forum.freecadweb.org/viewtopic.php?f=3&t=53780#p463271
It is not the first time. They usually go under the radar and when they are
detected is too late to know what caused them. The user is desperate too.
This commit makes malformed constraints to prevent the recompute of the project.
This is in the best interest of the user.
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ViewProviderSketch relies on new property SketchObject::FullyConstraint to show status via overlay icon
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Before this implementation, specific status via former mergeOverlayIcon() was greyed out
with the visibility.
With this commit, the developer has two options:
a) override mergeGreyableOverlayIcons, in which case the overlay will
be greyed out when the item is greyed out as per former mergeOverlayIcon()
b) override mergeColorfulOverlayIcons, in which case the overlay will
be superimposed after the icon is greyed out as it is the case for stardard
error and recompute flags.
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This property stores whether a Sketch has 0 DoF or not upon solve.
It is serialised to disk, enabling a recently loaded project to have an accurate
populated property even before the first solve() call.
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ViewProviderSketch now derives from the ViewProviderAttachExtension and gets the overlay icon when not attached.
ViewProvider2DObject does not implement a ViewProviderAttachExtension although Part2DObject (on which SketchObject derives)
does derive from AttachExtension. It is understood that this is because this functionality is unwanted for other
ViewProviders.
By making sure to signal from the owner document of the editing object.
The owner document of the editing object may be different from the
editing document in case of editing external linked object.
2 weeks ago the properties EndTypeScale and LineVisible were added but not to the dialog.
This PR adds them t the balloon dialog-
It also took the opportunity to cleanup the code:
- add missing tooltips
- uniform tooltips in App and Gui
- uniform the UI element names
