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Tallefer / two-finger-scroll

Automatically exported from code.google.com/p/two-finger-scroll
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Add a Second Line of Support for 1f ALPS and Syn Trackpads #48

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Having a Synaptics pad that only registers one f
2. Having an ALPS trackpad 

Please provide any additional information below.

I wouldn't suggest this, but the OSX86 community has already implemented a 
driver called VoodooPS2 that will register two fingers and allow two finger 
scrolling if the trackpad supports it.

For either ALPS or Synaptics, however, it uses a combination of "z" 
pressure and "w" width to emulate a two-finger press.  Either of these 
measures alone will not accurately emulate a two-finger scroll.  However, 
when w>9 and z>80, the user is almost surely attempting a two-finger 
scroll.

Original issue reported on code.google.com by barrett.r.williams on 10 Sep 2009 at 6:12

GoogleCodeExporter commented 9 years ago 
The second paragraph refers to trackpads that never register f>1.  (f=# of 
fingers/points of contact detected)

Original comment by barrett.r.williams on 10 Sep 2009 at 6:13