113 lines
3.3 KiB
Nix
113 lines
3.3 KiB
Nix
{
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pkgs,
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config,
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lib,
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options,
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...
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}:
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let
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cfg = config.stylix.targets.gtk;
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baseCss = config.lib.stylix.colors {
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template = ./gtk.css.mustache;
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extension = ".css";
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};
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finalCss = pkgs.runCommandLocal "gtk.css" { } ''
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cat ${baseCss} >>$out
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echo ${lib.escapeShellArg cfg.extraCss} >>$out
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'';
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in
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{
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options.stylix.targets.gtk = {
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enable = config.lib.stylix.mkEnableTarget "all GTK3, GTK4 and Libadwaita apps" true;
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extraCss = lib.mkOption {
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description = ''
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Extra code added to `gtk-3.0/gtk.css` and `gtk-4.0/gtk.css`.
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'';
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type = lib.types.lines;
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default = "";
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example = ''
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// Remove rounded corners
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window.background { border-radius: 0; }
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'';
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};
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flatpakSupport.enable = config.lib.stylix.mkEnableTarget "support for theming Flatpak apps" true;
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};
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config = lib.mkIf (config.stylix.enable && cfg.enable) (
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lib.mkMerge [
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{
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warnings =
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lib.optional (config.gtk.gtk3.extraCss != "" || config.gtk.gtk4.extraCss != "")
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"stylix: `gtk.gtk3.extraCss` and `gtk.gtk4.extraCss` have no effect. Use `stylix.targets.gtk.extraCss` instead.";
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# programs.dconf.enable = true; required in system config
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gtk = {
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enable = true;
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font = {
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inherit (config.stylix.fonts.sansSerif) package name;
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size = config.stylix.fonts.sizes.applications;
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};
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theme = {
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package = pkgs.adw-gtk3;
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name = "adw-gtk3";
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};
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};
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xdg.configFile = {
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"gtk-3.0/gtk.css".source = finalCss;
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"gtk-4.0/gtk.css".source = finalCss;
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};
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}
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(lib.mkIf cfg.flatpakSupport.enable (
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lib.mkMerge [
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{
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# Flatpak apps apparently don't consume the CSS config. This workaround appends it to the theme directly.
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home.file.".themes/${config.gtk.theme.name}".source =
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pkgs.stdenvNoCC.mkDerivation
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{
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name = "flattenedGtkTheme";
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src = "${config.gtk.theme.package}/share/themes/${config.gtk.theme.name}";
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installPhase = ''
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cp --recursive . $out
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cat ${finalCss} | tee --append $out/gtk-{3,4}.0/gtk.css
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'';
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};
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}
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(
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let
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filesystem = "${config.home.homeDirectory}/.themes/${config.gtk.theme.name}:ro";
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theme = config.gtk.theme.name;
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in
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if options ? services.flatpak.overrides then
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{
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# Let Flatpak apps read the theme and force them to use it.
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# This requires nix-flatpak to be imported externally.
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services.flatpak.overrides.global = {
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Context.filesystems = [ filesystem ];
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Environment.GTK_THEME = theme;
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};
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}
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else
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{
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# This is likely incompatible with other modules that write to this file.
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xdg.dataFile."flatpak/overrides/global".text = ''
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[Context]
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filesystems=${filesystem}
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[Environment]
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GTK_THEME=${theme}
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'';
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}
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)
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]
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))
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]
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);
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}
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