This seems to work OK as far as I can see… ## In the field script on scrollBarDrag put (the formattedHeight of me) - ((the vScroll of me) + (the height of me)) <= 6 ## = true when you reach the end of the vertical scroll end scrollBarDrag
I think 6 is relative to the minimum scroll thumb size, but I may be wrong. I tried different fonts/sizes, margins, textHeight, field sizes etc. and it seems to be reliable with the limited testing I did. Not a big problem, but I did discover one slight anomaly, I saw a difference of 1 pixel in the maximum vScroll between dragging the scroll thumb using the mouse button as opposed to using the mouse scroll wheel, so a little tolerance may help. Paul > On Nov 8, 2015, at 1:52 PM, Brahmanathaswami <[email protected]> wrote: > > OLD question. > > What is the algorithm for determining if someone has scrolled all the way to > the end of the text of a field with overflow text? > > Another way to say this is: what is the relationship to the vScroll and > formattedHeight? > > I'm testing with this > > where the factor "195" is somehow related to the field height > (which is 178 px high plus the some value related to the lineheight or font > size) > > But this seems to work... > > function checkScrollDone > put the formattedHeight of fld "quote" into tTextHeight > put the vScroll of fld "quote" into tVscroll > put tTextHeight - tVscroll into tBalanceToScroll > put tBalanceToScroll > if tBalanceToScroll < 195 then > return "true" > else > return "false" > end if > end checkScrollDone > > > BR > > _______________________________________________ > use-livecode mailing list > [email protected] > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
