gtk2/gtk/theme/Adwaita
Christoph Reiter 6f6070b510 themes: remove various @extend with compound selectors
They are no longer supported by sass and broken with libsass 3.6.3
(https://github.com/sass/libsass/issues/3033)

This removes some of them by replacing them with a placeholder selector.
This at least brings the resulting CSS size down a bit so gtk can be build
again.

The remaining cases I don't know how to convert because I haven't found a way to
reproduce the old output.

The CSS was generated with libsass 3.5.5.

See #2237
2019-11-22 17:54:30 +01:00
..
assets Adwaita: Drop checkbox-selectionmode assets 2019-03-13 14:13:42 +05:00
_colors-public.scss
_colors.scss Adwaita: increase opacity for OSD bg 2019-08-02 14:17:14 +02:00
_common.scss themes: remove various @extend with compound selectors 2019-11-22 17:54:30 +01:00
_drawing.scss Refresh check/radio styling 2019-11-15 14:26:47 +01:00
assets.svg Adwaita: Drop checkbox-selectionmode assets 2019-03-13 14:13:42 +05:00
assets.txt Adwaita: Drop checkbox-selectionmode assets 2019-03-13 14:13:42 +05:00
gtk-contained-dark.css themes: remove various @extend with compound selectors 2019-11-22 17:54:30 +01:00
gtk-contained-dark.scss
gtk-contained.css themes: remove various @extend with compound selectors 2019-11-22 17:54:30 +01:00
gtk-contained.scss
gtk-dark.css
gtk.css
meson.build meson: Sync build files with master and update to 3.24 2019-04-11 16:45:27 +02:00
parse-sass.sh
README
render-assets.sh Adwaita: update image assets 2019-01-28 11:43:54 +01:00

Summary
-------

* Do not edit the CSS directly, edit the source SCSS files
* To be able to use the latest/adequate version of SASS, install sassc
* The configure script will detect whether or not you have sassc installed;
  if you do, it will regenerate the CSS every time you modify the SCSS files
  and rebuild GTK+.

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 form 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.