TextScale: use a single toggle

[danirabbit]

• Matches an expressed user desire to quickly toggle between normal and large text. (Use case was a presenter who wanted to be able to quickly enlarge and restore text while presenting)
• Uses a single toggle which fits in better with other potential sliders like sound and brightness

[danirabbit]

@jeremypw Yeah I'm not sure of a better way to meet the desire here which is switching between large text and quickly reverting back to normal size text. There is only one text scale setting, so I can only scale back to the default value or some multiple of it. If your text size is already set to something larger than the default, I don't know how we can determine that it's because that's your "normal" text or if it's "large" text that we then need to revert when the setting is toggled :thinking: Open to suggestions about how to handle that better

[danirabbit]

Actually now that I think about it, maybe the text size setting in System Settings should be changing the font and not the text scaling factor. Then we could have a way to differentiate between what is your default text size and what is a temporary scaling

[jeremypw]

Actually now that I think about it, maybe the text size setting in System Settings should be changing the font and not the text scaling factor. Then we could have a way to differentiate between what is your default text size and what is a temporary scaling

Sounds like a plan :-)