Yaru: Gtk2-light : fixed two issues

[Paz-it]

1. Treeview_header :
   Before:
   
   After : including fix for handles
   
   I changed 1 assets file with minor tweaks to gtkrc + main.rc
   If you approve I need to send that asset file (png) and the tweaking details.
   Example for treeview before :
   
   After :
   

[madsrh]

The headers should be white @Paz-it See this issue: https://github.com/ubuntu/yaru/issues/467

[Paz-it]

@madsrh , The color is VERY subtle, almost white but no problem to change it to complete white. The most important change is the clean look without extra unnecessary lines on top/bottom/lett/right preventing that clutter look.

[clobrano]

The problem is that GTK2 must adhere with GTK3

moreover, the headerbar in this PR looks outside of the table to me and breaks the notebook view

[Paz-it]

I understand but the gtk3 looks much cleaner.
in this condition I think it is even more broken.
look at it again here :

In audacious you can hide the headerbar but in some other places you can't.
The subtle color can be changed to #ffffff instead of #f5f6f7 if necessary.
I did it for myself because it really disturbs :roll_eyes:

[clobrano]

That's probably a misuse of treeview headerbar in audacious. The reason why headerbar is white is exactly because sometimes they are inside a notebook tab, which is all white itself. A different color would break the view

[Paz-it]

Like I said to @madsrh the color is not the main issue. the most annoying and aesthetic issue is the extra unnecessary lines on top/bottom/lett/right that makes it look cluttered.
Here you can see the before and after in Gpick:


and in Gimp :


I also changed the scrollbar-through color and reduced it's size but that's beside point now.

[madsrh]

@Paz-it We simply disagree here. IMO the before picture looks better.

I do like the scrollbars - is you can open a PR for it, that would be great.

[Paz-it]

Last try with all white treeview-headerbar and sccrollbar-through white background :

WDYT? :thinking:

[clobrano]

I would like to see it with the gtk2 test app. Could you open a PR with this change?

[Paz-it]

Gtk2 test app :

Can't open a PR , Sorry. there must be some other way,

[clobrano]

I'm unsure, headerbar in awf is not ideal

[Paz-it]

@clobrano ,The awf is not giving you the full perspective because it's a kind of stand-alone widget without the window-frame it belongs to but if you feel it's not fit let's close it.

[clobrano]

Let's close this and continue to #908