labwc/include/config
Johan Malm 698c7ace07 config: support merging multiple config files
Add the -m|--merge-config command line option to iterate backwards over
XDG Base Dir paths and read config/theme files multiple times.

For example if both ~/.config/labwc/rc.xml and /etc/xdg/labwc/rc.xml
exist, the latter will be read first and then the former (if
--merge-config is enabled).

When $XDG_CONFIG_HOME is defined, make it replace (not augment)
$HOME/.config. Similarly, make $XDG_CONFIG_DIRS replace /etc/xdg when
defined.

XDG Base Dir Spec does not specify whether or not an application (or a
compositor!) should (a) define that only the file under the most important
base directory should be used, or (b) define rules for merging the
information from the different files.

ref: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

In the case of labwc there is a use-case for both positions, just to be
clear, the default behaviour, described by position (a) above, does NOT
change.

This change affects the following config/theme files:
  - rc.xml
  - menu.xml
  - autostart
  - environment
  - themerc
  - themerc-override
  - Theme buttons, for example max.xbm

Instead of caching global config/theme directories, create lists of paths
(e.g.  '/home/foo/.config/labwc/rc.xml', '/etc/xdg/labwc/rc.xml', etc).
This creates more common parsing logic and just reversing the direction
of iteration and breaks early if config-merge is not wanted.

Enable better fallback for themes. For example if a particular theme does
not exist in $HOME/.local/share/themes, it will be searched for in
~/.themes/ and so on. This also applies to theme buttons which now
fallback on an individual basis.

Avoid using stat() in most situations and just go straight to fopen().

Fixes #1406
2024-01-18 20:20:36 +00:00
..
keybind.h keybinds: add optional layoutDependent argument 2023-09-11 15:41:19 +02:00
libinput.h config: s/enum device_type/enum lab_libinput_device_type/ 2024-01-01 22:04:21 +00:00
mousebind.h includes: identifier consistency in include guards 2023-05-13 22:29:21 +01:00
rcxml.h config: support merging multiple config files 2024-01-18 20:20:36 +00:00
session.h config: support merging multiple config files 2024-01-18 20:20:36 +00:00
tablet.h config: reuse mousebind_button_from_str() 2024-01-06 19:37:41 +00:00