BackgroundColor transparent doen't work on (Arch) Linux

[0Franky]

Hi leanflutter, I'm using this package to handle my desktop feature. I'm trying to build a rounded window. So i used a ClipRRect to wrap the Scaffold and windowManager.setBackgroundColor(Colors.transparent) to build the background window transparent. On widows everything work correctly, but on arch linux the background is black.

PS I use also windowManager.setAsFrameless().

I hope this can be fixed.

[Merrit]

I just tried this on Fedora, it works but I had to set my scaffold property backgroundColor: Colors.transparent - might be the issue? :)

[0Franky]

Hi @Merrit, thank you for your reply.

I'll try it today. But as I said I wrapped the scaffold to ClipRRect so I think the color of the scaffold (and the entire scaffold) is cut out. And on windows I achieve the correct result. Anyway I'll test it today, a further test can only do well!

Thanks again

[Merrit]

I've reproduced the same issue while trying to create sub-windows that have transparency; transparency works fine in the main window.

Here is a minimal reproducible example

@0Franky Are you having issues in a similar situation, or do you have this issue even in the standard counter app?

[0Franky]

Good morning everyone,

Unfortunately I had to temporarily suspend the project, so I'm sorry for the late reply @Merrit

In my case I'm using just a single window.

I set the bg as transparent and backgroundColor (in the theme) as red and the window bg was red. Then I tried to set bg and backgroundColor as transparent and the window bg fell back to the black.

My widget tree is the follow:

MaterialApp > ClipRRect > Scaffold > ......

ClipRRect should clip the scaffold and show the window bg color (transparent)

[0Franky]

I just downloaded and started your template project and this is the result

[Merrit]

Is your window manager running with compositing enabled? I believe compositing support is required for transparency to work..

[0Franky]

Yes my compositor of enabled. And anyway the problem also occurs in the double window in your case. So even though the composer is enabled, the problem still arises. I think there is some other underlying problem.

[whiskeyPeak]

@0Franky Hey! I encountered the same issue, and removing

gtk_widget_show(GTK_WIDGET(window));
gtk_widget_show(GTK_WIDGET(view));

from my_application.cc made it all work. The only issue now is that the window doesn't have any shadows anymore, though I don't think there's a workaround for that.

[0Franky]

I home this issue can be fixed as soon as possible 🙂

[lewisHeart]

I've reproduced the same issue while trying to create sub-windows that have transparency; transparency works fine in the main window.

Here is a minimal reproducible example

@0Franky Are you having issues in a similar situation, or do you have this issue even in the standard counter app?

Did you get anything currently by trying to enable transparency on the second screen?

[Merrit]

Did you get anything currently by trying to enable transparency on the second screen?

I've still not been able to get a sub-window to enable transparency. :/