Bug 421190

Summary: Ability to highlight with shape (multiply)
Product: [Applications] okular Reporter: Mattia <altermetax>
Component: generalAssignee: Okular developers <okular-devel>
Status: REPORTED ---    
Severity: wishlist    
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Example showing current behavior

Description Mattia 2020-05-08 14:52:16 UTC
Created attachment 128257 [details]
Example showing current behavior

SUMMARY
Currently, the only way to highlight is to use a highlighter tool, which can only highlight text. You can configure a shape tool to have opacity < 100%, but that will make the underlying content more faded. It would be nice to have the ability to set a multiply mode for shapes and lines, as other PDF viewers (like PDF-XChange) allow.

STEPS TO REPRODUCE
1. Use a highlighter and see how only the background changes color, while text remains black
2. Now use a shape or a line configured with less than 100% opacity.

OBSERVED RESULT
The text will slightly change color to the color of the shape.

EXPECTED RESULT
If a 'multiply' mode existed in the annotation settings, you could make the shape only change the background color.

SOFTWARE/OS VERSIONS
Arch Linux
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.69.0
Qt Version: 5.14.2