gtk2/gtk/theme/Adwaita
Jakub Steiner 0cda6f42b8 Adwaita: fine tune flat button styling
- enough contrast for hover and active, while noticably different in
  normal nad headerbar context (and both light and dark variants).

Fixes https://gitlab.gnome.org/GNOME/gtk/-/issues/3481
2021-01-07 12:12:55 +01:00
..
assets
_colors-public.scss
_colors.scss HC: special case .dim-label 2021-01-06 12:46:35 +01:00
_common.scss Adwaita: fine tune flat button styling 2021-01-07 12:12:55 +01:00
_drawing.scss Adwaita: fine tune flat button styling 2021-01-07 12:12:55 +01:00
Adwaita-dark.scss
Adwaita.scss
assets.svg
assets.txt
gtk-dark.css
gtk.css
meson.build
README
render-assets.sh

Summary
-------

* To be able to use the latest/adequate version of sass, install sassc
* meson will regenerate the CSS every time you modify the SCSS files.
* Note that meson always builds out-of-tree, so the modified css files will
  appear in your builddir.

How to tweak the theme
----------------------

Adwaita is a complex theme, so to keep it maintainable it's written and
processed in SASS. The generated CSS is then transformed into a gresource file
during gtk build and used at runtime in a non-legible or editable form.

It is very likely your change will happen in the _common.scss file. That's where
all the widget selectors are defined. Here's a rundown of the "supporting"
stylesheets, that are unlikely to be the right place for a drive by stylesheet
fix:

_colors.scss        - global color definitions. We keep the number of defined
                      colors to a necessary minimum, most colors are derived
                      from a handful of basics. It covers both the light variant
                      and the dark variant.

_colors-public.scss - SCSS colors exported through gtk to allow for 3rd party
                      apps color mixing.

_drawing.scss       - drawing helper mixings/functions to allow easier
                      definition of widget drawing under specific context. This
                      is why Adwaita isn't 15000 LOC.

_common.scss        - actual definitions of style for each widget. This is
                      where you are likely to add/remove your changes.
                      
You can read about SASS at http://sass-lang.com/documentation/. Once you make
your changes to the _common.scss file, GTK will rebuild the CSS files.