Fixed a few minor compile issues, example impl. for pinch.

Hi Julicia, you'll want to accept this and see how it works, what the entire set of changes I did to support pinch were, etc.. - you'll do a similar set of changes to get long press working.
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Changes:
Example implementation for pinch where it zooms label content without changing size of labels themselves.
This is fine to leave as is, it should be helpful in developing the long press changes.