angular-ui/ui-grid

Slow on re-rendering Grid for horizontal scrolling (Mobile)

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#4,084 opened on Jul 30, 2015

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 (3 comments) (1 reaction) (1 assignee)JavaScript (5,395 stars) (2,496 forks)batch import
grid-corehelp wantedtype: bug

Description

Hi,

For example: http://ui-grid.info/docs/#/tutorial/191_horizontal_scrolling

Device: iPhone 5 iOS version: 8.4

When we scroll horizontally, the column headers takes 2 seconds or even more to be in right position.

I'm not sure which part is the cause for this delay.

Contributor guide

Tech stack
javascripthtmlcssangular
Domain
frontendperformance
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
unclear
Prerequisites
AngularJS knowledgeui grid codebase familiaritymobile debugging skillsperformance profiling
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15
Research direction
Investigate the column header rendering logic in the ui grid source code, likely in the Grid or Column services. Profile the re rendering process on mobile using Chrome DevTools remote debugging. Look for DOM manipulations causing layout thrashing and consider implementing viewport based rendering to reduce DOM elements.