Thanks for the code Scott. On a related issue, I've tried a number of different approaches for implementing side-to-side swiping within a vertically scrolling group (a day-per-view calendar object) but haven't managed to come up with anything that works reliably - especially on iOS.
A combination of touchStart and touchRelease handlers works sort of OK on Android (touchMove and touchEnd messages don't seem to get sent reliably) but on iOS I don't seem to be able to prevent the group from scrolling vertically if the swipe is more than a little bit off the horizontal. Any ideas? Terry... On 07/10/2013, at 10:26 AM, Scott Rossi wrote: > Hi Roger: > > Might be wrong, but I don't believe there's a built-in swipe > monitor/property. I put together the following to detect course swipe > direction and added the ability to track the swipe angle. You can set the > swipe distance threshold to control when an event is triggered from a > swipe. The code is written to place direction output in a field. > > > -- 50 PIXEL SWIPE THRESHOLD > > local hStart, vStart, theSwipeData > local theThreshold = 50 > > on touchStart theID > put item 1 of mouseLoc() into hStart > put item 2 of mouseLoc() into vStart > end touchStart > > on touchmove theID, X, Y > put empty into theSwipeData > if Y > vStart and abs(vStart - Y) > theThreshold then put "down," > after theSwipeData > if Y < vStart and abs(vStart - Y) > theThreshold then put "up," after > theSwipeData > if X > hStart and abs(hStart - X) > theThreshold then put "right," > after theSwipeData > if X < hStart and abs(hStart - X) > theThreshold then put "left," > after theSwipeData > if theSwipeData is not empty then put locToAngle(X,Y,hStart,vStart) > after theSwipeData > end touchmove > > on touchEnd theID > put "swipe: " into theResult > if theSwipeData is not empty then put theSwipeData after theResult > set text of fld 1 to theResult > end touchEnd > > function locToAngle pX,pY,pXorigin,pYorigin > put atan2(pY - pYorigin,pXorigin - pX) into R > return round(180+(R*(180/pi))) > end locToAngle > > > > > > Hope this helps. > > Regards, > > Scott Rossi > Creative Director > Tactile Media, UX/UI Design > > > > > On 10/6/13 2:09 PM, "Roger Eller" <roger.e.el...@sealedair.com> wrote: > >> I want a different action to occur based on the direction the user swipes >> a >> control. For example: >> >> on swipeLeft >> set the backgroundColor of me to red >> end swipeLeft >> >> on swipeRight >> set the backgroundColor of me to green >> end swipeRight >> >> Is there a one liner on mobile that can give me the direction, or >> true/false, or l/r/u/d? >> >> ~Roger >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your >> subscription preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode >> > > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > Dr Terry Judd Senior Lecturer in Medical Education Medical Education Unit Faculty of Medicine, Dentistry & Health Sciences The University of Melbourne _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
