widget: Add the GridWrap collection widget from @dweymouth #3965
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Description:
Initial implementation was by @dweymouth over at fyne-io/fyne-x#56. This PR includes that work plus selection support and some of the improvements that I have done (see fyne-io/fyne-x#61 and https://github.com/fyne-io/fyne-x/compare/master...Jacalz:gridwrap-selection?expand=1).
This was done as a PR directly to Fyne and not fyne-x as the
.super()
call fromwidget.BaseWidget
wasn't public and not using it made the selection work bad. All of the changes in this PR compared to the widget in fyne-x can be found here: https://github.com/fyne-io/fyne-x/compare/master...Jacalz:gridwrap-selection?expand=1Checklist:
Where applicable: