ScrollView object scrollHeight doesn't work

Solar2D Widgets
#1

Hi Guys,

I have a ScrollView control and I see that’s scrollHeight space is very  big.

I am changing the  scrollHeight value but nothing happening.

I assume that there is a display object on my screen and it’s Y values is very big and it’s hidden so I can’t change the space. (it can be because I am calculating the x and y values dynamically in my code)

And that’s my question: How can I find the issue? 

Is there a way that how I can find the all display objects on the screen? Can I find them with a for loop?

Thanks in advance

#2

Under the hood, a scrollView is a display.newGroup() which has no real bounds. The width and height returned is calculated by drawing a bounding box around all objects.

You could loop over your scrollView._view (the display group) , The _ means it’s supposed to be private and you’re not supposed to access it, but Lua really doesn’t support private members. The _ also means we can change it from _view to something else without letting anyone know. So don’t build access to _view into your program for the long term, but for trouble shooting this you can get away with it.

This is untested but something like:

for i = 1, #scrollView._view do – assuming your scrollView is named scrollView…

    print( i, scrollView._view[i].x, scrollView._view[i].y

end

#3

Under the hood, a scrollView is a display.newGroup() which has no real bounds. The width and height returned is calculated by drawing a bounding box around all objects.

You could loop over your scrollView._view (the display group) , The _ means it’s supposed to be private and you’re not supposed to access it, but Lua really doesn’t support private members. The _ also means we can change it from _view to something else without letting anyone know. So don’t build access to _view into your program for the long term, but for trouble shooting this you can get away with it.

This is untested but something like:

for i = 1, #scrollView._view do – assuming your scrollView is named scrollView…

    print( i, scrollView._view[i].x, scrollView._view[i].y

end