Playing with touch screen events

[Andy Green]

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Somebody in the thread at some point said:
|> http://svn.openmoko.org/developers/tick/touchtest/touch_test.py
|
| IIUC this is listening to X events, but this has already been filtered
| through a driver that tries to reduce jitter and stuff.  What kind of
| info does the driver give?  Could it support multiple touches
| (e.g. pinch, two-finger scroll, ...)?

The only extra thing you can squeeze out of it is the area of the
contact to the touchscreen, so you can tell between stylus, fingernail,
thumb.  I also made a patch for this, but I was unable to get the
results normalized across the whole touchscreen surface.  It could tell
very well though in any given area about the contact size.

- -Andy
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