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Provider an accessor to the Rubberband's current position #42

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@paravoid

(This is a simplified problem of a broader use case)

Let's say that I want to extract the Rubberband's position, save it, clear it, and later programmatically restore it where it was.

  • I can restore its position with view.rubberband().setSelection()
  • During the rubberband's lifetime, I can get the current selection through the selectionChanged signal (When the selection is changed, the selectionChanged signal is emitted, having the selection rectangle in layout coordinates as argument.).
  • However, I don't seem to be able to find the current selection from the Rubberband object itself, e.g. a view.rubberband().selection.

Apparently the code necessary for this is in _setSelectionFromGeometry:

        view = self.parent().parent()
        rect = rect.translated(-view.layoutPosition())

I can't say I understand yet what this translation does. But perhaps it's worthwhile to provide a method/property in the Rubberband class for convenience & abstraction?

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