Add an API to get the "min" width of text widgets with wrapping that would be needed to show the text without wrapping about fyne HOT 6 OPEN

I'm not sure I agree that the only solution is a messy one... Can't you just get the minimum before turning on wrapping and cache that value?

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What about when you need to update the text while it's already displayed (and update the positioning of an icon you want to position immediately to the right of the text string)?

BTW here is a case internally where it would be useful - https://github.com/fyne-io/fyne/blob/develop/dialog/text.go#L38

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This could also supersede #4648

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What I'm not really getting is why it's not just a right aligned icon with text filling the available space

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As far as I can tell you can't achieve the desired positioning:

• If you put the label and icon in an HBox, the text will always be forced to its minSize of "..." (using TruncateEllipsis)
• If you put the label and icon in a border with label as center, and icon as right, then the icon will float all the way to the right with the available space, rather than immediately to the right of the end of the label's text
• Writing a custom layout, you still need to know how much space the text takes up if the full thing can be displayed in the label (which is different from label MinSize which is only big enough for "...")

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