This kind of discussion should happen in W3C WebApps WG, using DOM mailing list ([email protected]).
There as been some discussion about this subject and I hope there would be a draft spec somewhat soon. (This all may depend on patent nonsense.) -Olli On 2/26/10 12:37 AM, [email protected] wrote:
This is a timely call for interest. Additionally I would like to sollicit thoughts on the ideal level of abstraction such event API's should provide. Some random examples for illustration. Low level: TouchDown(...) onTouchMove() onTouchUp() with each reporting and tracking pressure and position of multiple fingers so that "gesture recognition" can be done in the script Mid Level: onTap(), onDoubleTap(), onLongTouch(), onDrag(), onPinch()....position but no pressure reported High Level: onRotate(), onScroll(), onResize()....gesture reported The complexity and number of problems to overcome to produce a clean API is much greater for higher levels of abstraction. On a related note it would be useful for tablets and smartphones to also handle other sensors such as accelerometers.... onShake(), onOrientationChange() I believe Palm has done some stuff to support this. At a lower level you can get raw accelerometer data too. -dave On Feb 25, 2010 10:00pm, Charles Pritchard <[email protected]> wrote: > Hi All; > > > > I'd like to know if there's room or any work has been done to set aside a > > standard for an extended set of pointer-device events. > > > > With touch screens and touch sensitivity becoming quite main-stream, > > I'd like to see this popular functionality supported by the HTML 5 standard. > > > > We see, in the iPhone, an ontouchstart and ongesturestart, and company. > > Gesture is a nice way of saying multiple inputs, and it works well. > > > > > > While many people would like to wrap the ontouch events into onmouse > > events -- they do have some different semantics. And, I believe > > that ontouch would be a good place to add in pressure sensitivity indexes. > > > > So, I thought I'd solicit feedback here. > > > > I'd like a common API to support touch screens > > and pressure/angle sensitive touch devices. > > > > I believe that both Apple and Wacom have thrown their hats into the ring, and we can easily > > integrate their achievements. > > > > > > -Charles > > > > > > >
