How To Get The Scrollwidth After Create A Scrollview?

Solar2D General Questions/Discussion
#1

Hi all,

I have a question about scrollView.

If I create a scrollview like this:

 local scrollView = widget.newScrollView{
  width = _H*1.32,
  height = _W*1.52,
  bgColor = { 255, 255, 255, 192 },
  listener = scrollViewListener
 } 

then I insert some object into it.  The scrollWidth will be changed.

How can I get the scrollWidth after changing?

Can anyone give me some advices?

Thank you very much.

#2

Does scrollView.width not return the right value?

#3

Does scrollView.width not return the right value?

#4

scrollView.width, scrollView.contentWidth and scrollView.contentBounds.xMax all report the same value, even if the scrollView has a significant amount of horizontal content.

It appears there is no way to test for contentWidth, which means I have to abandon converting my project to Graphics 2.0. :frowning:

EDIT: gosh, just noticed that was a 2013 post…but as best I can tell, there’s no solution today either?

#5

A scrollView’s “group” is a container.  I suspect that the .width and  .contentWidth are returning the width of the container. 

Have you tried view._scrollWidth?  I don’t like recommending using private variables but it might have what you’re looking for.

#6

Thanks for trying Rob, but that variable does not exist. Nor does scrollView.view, for that matter. A cursory pairs() check doesn’t seem to reveal any similar variable.

#7

I believe what you are looking for is this:
 

scrollView.\_view.contentHeight -- returns current height of scrollView scrollView.\_view.contentWidth -- returns current width of scrollView
#8 
scrollView.\_view.contentHeight -- returns current height of scrollView scrollView.\_view.contentWidth -- returns current width of scrollView

Perfect; that works. Thanks, eja :slight_smile:

#9

scrollView.width, scrollView.contentWidth and scrollView.contentBounds.xMax all report the same value, even if the scrollView has a significant amount of horizontal content.

It appears there is no way to test for contentWidth, which means I have to abandon converting my project to Graphics 2.0. :frowning:

EDIT: gosh, just noticed that was a 2013 post…but as best I can tell, there’s no solution today either?

#10

A scrollView’s “group” is a container.  I suspect that the .width and  .contentWidth are returning the width of the container. 

Have you tried view._scrollWidth?  I don’t like recommending using private variables but it might have what you’re looking for.

#11

Thanks for trying Rob, but that variable does not exist. Nor does scrollView.view, for that matter. A cursory pairs() check doesn’t seem to reveal any similar variable.

#12

I believe what you are looking for is this:
 

scrollView.\_view.contentHeight -- returns current height of scrollView scrollView.\_view.contentWidth -- returns current width of scrollView
#13 
scrollView.\_view.contentHeight -- returns current height of scrollView scrollView.\_view.contentWidth -- returns current width of scrollView

Perfect; that works. Thanks, eja :slight_smile: