Bug 579288

Summary:	[Accessibility] On high contrast theme(White) Labels are invisible at Model Spy Form tab dialog
Product:	[Eclipse Project] Platform	Reporter:	Niraj Modi <niraj.modi>
Component:	UI	Assignee:	Platform-UI-Inbox <Platform-UI-Inbox>
Status:	NEW ---	QA Contact:
Severity:	minor
Priority:	P3	CC:	fuse
Version:	4.24	Keywords:	accessibility
Target Milestone:	---
Hardware:	PC
OS:	Windows All
See Also:	https://bugs.eclipse.org/bugs/show_bug.cgi?id=578630
Whiteboard:

Description Niraj Modi

2022-03-17 04:34:07 EDT

This is a corner scenario from fix for bug 578630, which addresses the high-contrast(Black variants)

As reported by Masayuki(https://bugs.eclipse.org/bugs/show_bug.cgi?id=578630#c13) when high-contrast(White) is used as seen on Windows11 Desert theme, labels are not visible in Model Spy Form tab dialog: https://bugs.eclipse.org/bugs/attachment.cgi?id=288228

Comment 1 Niraj Modi

2022-03-17 04:39:58 EDT

Possible fixes for this issue:
1. Use dark grey(#2f2f2f) back-ground instead of pure black(#000000) as used in fix for bug 578630 which will works in all variants of high-contrast themes, but doesn't looks that good on high-contrast(Black) which is the major use-case.

2. Alternate solution proposed by Masayuki is to use separate .css file for high-contrast Black and White variants.
> This solution needs to be evaluated by the Eclipse platform CSS team or find a better solution here.

Comment 2 Niraj Modi

2022-03-17 04:47:38 EDT

Workaround for Eclipse 4.23+ and 4.24 version:
1. Open below directory path:
<ECLIPSE_ROOT>\eclipse\plugins\org.eclipse.ui.themes_<VERSION>\css

Note:- <VERSION> value in above path may vary based on Eclipse build.

2. Open high-contrast.css file and modify the background-color entry:
.MPart Composite
{
    background-color: #000000;
}

3. Change the color value from pure black(#000000) to any of below:
- dark grey(#2f2f2f) which kind of works in all high-contrast themes.
- pure white(#ffffff) which works on high-contrast(White theme only) but will break on high-contrast Black.