ScrollWheel, Xdps and NSEvent modification

[Pierre-Yves Rivaille]

Hello,

I've just commited modifications to support scrollwheel under GNUstep, but 
there are a few points i would like to discuss.

1. I 've added deltaX, deltaY, deltaZ support in NSEvent, so i added a class 
method named


+mouseEventWithType:location:modifierFlags:timeStamp:windowNumber:context:deltaX:deltaY:deltaZ:
i made this class public even though it does not exist in Openstep or in MOSX 
doc, because it seems really consistent with the other class methos. Does this 
seem ok ?
(this one is for you, Richard :-) )

2. NSMouseMoved and NS*MouseDragged event do now use deltaX, deltaY and 
deltaZ. It's not using eventNumber, clickCount and pressure anymore. It's not 
raising an exception if you call those methods on those kind of events, but it 
will soon (once i'm sure it does not break anyone's code). I doubt anyone use 
those features, but you never know.

3. What should be the default behaviour associated with NSScrollWheen event ?
right now we have (in NSScrollView)
- scrollwheel -> lineScrolling
- alternate+scrollwheel -> pagScrolling
Martin Brecher suggested adding "shift+ ..." as a horizontal scrolling (like 
in GIMP), does anyone disagree on this point ? (i guess so ...)
Anyway i think we should have GNUstep defaults for this kind of thing.

4. Can someone test the code on Xdps ? (i don't have dgs running, so i can see 
if there is any problems)


thank you,

        Pierre-Yves