[Bug] Display tab: Text in list of layers sometime unreadable

[wenzeslaus]

• Certain ways of clicking cause the line/item to be very dark with black text (beyond reading) with (at least some) dark themes.
• One way how to reproduce the state consistently seems to be right clicking and clicking Properties in the menu.
• Another way seems to be going to the Data tab, double clicking to add another raster or vector layer and switching back to Display tab.
• Observed on PoP!_OS.

Reproduce

• Set dark theme in operation system appearance settings.
• Start GRASS GIS
• Use download sample location from the tool bar in the Data tab to get North Carolina sample location.
• From Data tab add couple of layers.
• Go to Display tab and you should see one item being very dark.

Screenshot

System info

GRASS version: 8.0.dev                                                          
Code revision: 6a34ab17a                                                        
Build date: 2021-08-26                                                          
Build platform: x86_64-pc-linux-gnu                                             
GDAL: 3.2.1                                                                     
PROJ: 7.2.1                                                                     
GEOS: 3.9.0                                                                     
SQLite: 3.31.1                                                                  
Python: 3.8.10                                                                  
wxPython: 4.1.1                                                                 
Platform: Linux-5.11.0-7620-generic-x86_64-with-glibc2.29  

[ocsmit]

Do you happen to know which system theme you are using? I am unable to reproduce with latest GRASS dev on Ubuntu 20.04 LTS. Tried a couple different dark system themes.

[wenzeslaus]

I'm using basic Appearance > Dark on _PoP!OS and I don't know if there is a matching Ubuntu theme. The tricky part with reproducing it is that I get two different kinds of highlights. The following screenshot on the left shows colors just after adding the layers. On the right, I did two clicks on the layers, first keeps the same very dark, the other switches the highlight to lighter gray.

I was assuming this is from using custom black for the text, but getting some color from the system instead to do the black "highlight". Anyway, basically I think the graphics is just trying to be too fancy (e.g., the gradient is too much) and it is using custom colors instead of using the system colors (my highlight color is blue which is not used here at all).

It may be wxPython issue. My wxPython version is 4.1.1. I updated the description accordingly.