L. David Baron wrote:
One thing I think we ought to think about how to do is exposing touch zooming as a feature of the Web platform. In particular, we currently have touch-based panning and zooming for the top-level document, and have<meta viewport> syntax for pages to tweak its behavior. I think we also expose 'overflow' to allow touch-based panning for subparts of a page, but don't expose anything to allow touch-based zooming for subparts of a page. I think we ought to figure out how to do this so that pages can do in parts of the page what they do at toplevel, and at the same time benefit from the same async or off-main-thread mechanisms we use for panning and zooming.
Being able to opt in to panning and zooming of an individual element might be a good step towards a replacement for SVG's <svg zoomAndPan=""> functionality, which we never implemented.
Would the zooming functionality be exposed with a non-touch-based interface as well?
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