Slow scroll on firefox

Slow scroll on firefox

Posted by: jkainth on 4 April 2018, 7:06 am EST

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  jkainth

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  Posted 4 April 2018, 7:06 am EST

  Scrolling using mouse wheel in firefox is awful slow. Works well in all other browsers (Chrome, Edge and IE 11)

  firefox version: 59.0.2 (32-bit)

  i reproduced same slownrdd on your intro demo - definitely not my code.

  https://www.grapecity.com/en/demos/spread/JS/ViewsDemo/#/demos/Introduction

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  deepak.sharma

  

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  Posted 4 April 2018, 7:39 pm EST

  Hello,

  I am able to replicate this issue at my end.
  
  I have informed the development team about same. I will let you know as soon as I get an update on this.
  
  The tracking id for this issue is 256726.

  Thanks,
  
  Deepak Sharma

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  deepak.sharma

  

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  Posted 10 April 2018, 12:55 am EST

  Hello,

  The developer mentioned that the most of the Firefox scrolling issues are caused by it’s default settings. It is suggested to check:
  
  https://support.mozilla.org/en-US/questions/1019147

  Let me know in case this does not help you.

  Thanks,
  
  Deepak Sharma

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  jkainth

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  Posted 25 July 2018, 2:02 am EST

  I don’t think that is correct. I mean sure i could go and change my mouse scroll multiplier but it screws up all scrolling everywhere.

  It definitely is a Spread.Views bug/problem.

  Here is why:

  In firefox:

  • Spread.Sheets; scrolling wheel works as expected (well you scroll per row so not exactly similar)
  • Just a plain HTML list with scroll bar; scrolling wheel works as expected
  • Our own code for a visualized lists (which is what spread.views really is), scroll wheel works fine
  • Spread.Views; scroll wheel is awful slow!! barely 3px per scroll bar tick

  This really needs to be investigated; cant exactly have users change their default scroll multipliers just when they use Spread.Views

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  jkainth

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  Posted 25 July 2018, 2:07 am EST

  Ohh to expand on that.

  In your views implementation, your virtualized viewport is kept in sync with the viewport-scroll-vertical div(this is what renders the scroll bar).

  if you mouse over the scroll bar and scroll, it works just fine; default speed etc
  
  if you mouse over the viewport (rows) and scroll, the scroll speed is awful.

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  grapecity

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  Posted 25 July 2018, 3:55 pm EST

  Hello,

  I will further take it up with the development team and let you know about our findings.

  Thanks,
  
  Deepak Sharma