https://bugs.documentfoundation.org/show_bug.cgi?id=167511

            Bug ID: 167511
           Summary: Enabling high contrast results in low contrast in
                    Impress slide with background set
           Product: LibreOffice
           Version: 25.8.0.0 alpha0+
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Keywords: accessibility
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: [email protected]
          Reporter: [email protected]
            Blocks: 101912

Created attachment 201802
  --> https://bugs.documentfoundation.org/attachment.cgi?id=201802&action=edit
Sample presentation to reproduce the issue

This was originally reported in the GNOME a11y matrix chat:

> turn on highcontrast, and all your slides are white-on-white
> I guess the issue is that my slides were using colorful backgrounds and white 
> text
> and it appears that hc just assumes black text and replaces the bg with white 
> ?

Steps to reproduce:

1) open the attached sample document in Impress which has red set for the slide
background
-> it shows fine as long as the high contrast feature isn't used
2) in "Tools" -> "Options" -> "LibreOffice" -> "Accessibility", set "High
Contrast" to enabled
3) restart LO and open the sample file again

Actual result:

In the edit view, the slide now shows white text on light grey background, i.e.
has a very low contrast.

Expected result:

Contrast should be high. (Either don't mess with the slide colors at all, or in
a way that results in high contrast.)

Further info: This seems to only affect how the slides are displayed while
editing. When presenting them on screen, the red background is displayed and
the contrast is fine (as with High Contrast disabled).

Version: 26.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 04e66ac54169dd2a00d53abec093375bba90fd60
CPU threads: 32; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: en-GB (en_GB.UTF-8); UI: en-US
Calc: threaded


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=101912
[Bug 101912] [META] Accessibility (a11y) bugs and enhancements
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