Bug 125610 – Use overflowRect's width for contentsWidth in RenderMarquee::computePosition

• Status: NEW
• Component: New Bugs

[KyungTae Kim]

Created attachment 219027 [details]
testcase

Currently, the preferredWidth is used for contentsWidth to compute children's position in render marquee,
but it is wrong when the children have a percent width type.

It was modified from overflowRect's width to preferredWidth by bug 64230,
but the preferredWidth is not same with the contentsWidth when the children have a percent width type.

So, overflowRect's width should be used for contentsWidth in here.

[Ahmad Saleem]

All browsers behave differently:

*** Safari Technology 15.6.1 & Safari Technology Preview 153 ***

1) percent-width image children <------- Differ from other browsers

Broken Image icon is expanded to the container size and and showing normal marquee animation

2) text with ltr direction 

Bouncing between container like normal marquee

3) text with rtl direction <------- Differ from other browsers
No marquee animation and text is stuck on right side

*** Chrome Canary 107 ***

1) percent-width image children <------- Differ from other browsers

Broken Image icon is expanded to the container size but have bottom padding and and showing normal marquee animation

2) text with ltr direction 

Bouncing between container like normal marquee

3) text with rtl direction <------- Differ from other browsers 

marquee animation but get stuck mid way of container

*** Firefox Nightly 107 ***

1) percent-width image children <------- Differ from other browsers

Broken Image icon is expanded to the container size and and showing normal marquee animation but the icon size of broken is not expanded like Safari to showcase broken image damsons (width / height etc.)

2) text with ltr direction 

Bouncing between container like normal marquee

3) text with rtl direction <------- Differ from other browsers 

marquee animation but behave same as 'ltr'

_______

Just wanted to share updated testing results across browsers. Thanks!

[Radar WebKit Bug Importer]

<rdar://problem/99826618>