How does an Android/iPhone device implement text-zooming?

Posted by rcoyner on Stack Overflow See other posts from Stack Overflow or by rcoyner
Published on 2010-04-30T06:27:39Z Indexed on 2010/04/30 7:17 UTC
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Simple question - how is text-zooming implemented on an Android/iPhone device? Do they pre-compute frequently used bitmaps of a font and replace the text as the scale changes? Or do they extract the contours from the font files and render the text as vector graphics?

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