Reorganize imports

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/configs/user/gui/gtk/default.nix

@@ -0,0 +1,108 @@
+{
+  user ? throw "user argument is required",
+  home ? throw "home argument is required",
+}:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  hmConfig = config.home-manager.users.${user};
+in
+{
+  # FIXME: https://github.com/lassekongo83/adw-gtk3/issues/267
+  nixpkgs.overlays = [
+    (final: prev: {
+      adw-gtk3 = prev.adw-gtk3.overrideAttrs (oldAttrs: rec {
+        pname = "adw-gtk3";
+        version = "5.3";
+        src = pkgs.fetchFromGitHub {
+          owner = "lassekongo83";
+          repo = pname;
+          rev = "v${version}";
+          sha256 = "sha256-DpJLX9PJX1Q8dDOx7YOXQzgNECsKp5uGiCVTX6iSlbI=";
+        };
+      });
+    })
+  ];
+
+  home-manager.users.${user} = {
+    gtk = {
+      enable = true;
+
+      theme = {
+        package = pkgs.adw-gtk3;
+        name = "adw-gtk3-dark";
+      };
+
+      font = {
+        name = builtins.head hmConfig.theme.font.sansSerif.names;
+        package = builtins.head hmConfig.theme.font.sansSerif.packages;
+        inherit (hmConfig.theme.font) size;
+      };
+
+      iconTheme = {
+        name = builtins.head hmConfig.theme.icon.names;
+        package = builtins.head hmConfig.theme.icon.packages;
+      };
+
+      gtk2.configLocation = "${home}/.config/gtk-2.0/gtkrc";
+      gtk3.extraCss = "@import './theme.css';";
+      gtk4.extraCss = "@import './theme.css';";
+    };
+
+    home = {
+      pointerCursor.gtk.enable = true;
+
+      file =
+        {
+          ".icons/default/index.theme".enable = false;
+        }
+        // builtins.listToAttrs (
+          builtins.map (name: {
+            name = ".icons/${name}";
+            value.enable = false;
+          }) (hmConfig.theme.icon.names ++ hmConfig.theme.cursor.names)
+        );
+    };
+
+    theme.template = {
+      "${home}/.config/gtk-3.0/theme.css".source = ./theme.css;
+      "${home}/.config/gtk-4.0/theme.css".source = ./theme.css;
+    };
+
+    theme.initExtraConfig = "${
+      lib.meta.getExe (
+        pkgs.writeShellApplication {
+          name = "theme-gtk";
+          runtimeInputs = with pkgs; [
+            dbus
+            dconf
+          ];
+          text = ''
+            MODE=$(cat "${hmConfig.theme.configDir}/mode")
+
+            if [ "$MODE" = "light" ]; then
+              GTK_THEME="adw-gtk3"
+            else
+              GTK_THEME="adw-gtk3-dark"
+            fi
+
+            if [[ -v DBUS_SESSION_BUS_ADDRESS ]]; then
+              DCONF_DBUS_RUN_SESSION=""
+            else
+              DCONF_DBUS_RUN_SESSION="dbus-run-session --dbus-daemon=dbus-daemon"
+            fi
+
+            $DCONF_DBUS_RUN_SESSION bash -c "
+              dconf write /org/gnome/desktop/interface/gtk-theme \"'$GTK_THEME'\"
+              dconf write /org/gnome/desktop/interface/color-scheme \"'prefer-$MODE'\"
+            "
+          '';
+        }
+      )
+    } &";
+  };
+}

hosts/common/configs/user/gui/gtk/theme.css

@@ -0,0 +1,48 @@
+@define-color window_bg_color alpha({{colors.surface.default.hex}}, {{custom.opacity}});
+@define-color window_fg_color {{colors.on_surface.default.hex}};
+
+@define-color view_bg_color @window_bg_color;
+@define-color view_fg_color @window_fg_color;
+
+@define-color accent_bg_color {{colors.primary_container.default.hex}};
+@define-color accent_fg_color {{colors.on_primary_container.default.hex}};
+@define-color accent_color {{colors.primary.default.hex}};
+
+@define-color headerbar_bg_color @window_bg_color;
+@define-color headerbar_fg_color @window_fg_color;
+@define-color headerbar_backdrop_color alpha({{colors.surface_variant.default.hex}}, {{custom.opacity}});
+@define-color headerbar_shade_color {{colors.shadow.default.hex}};
+
+@define-color card_bg_color alpha({{colors.surface_container.default.hex}}, {{custom.opacity}});
+@define-color card_fg_color {{colors.on_surface_variant.default.hex}};
+@define-color card_shade_color {{colors.shadow.default.hex}};
+
+@define-color popover_bg_color @window_bg_color;
+@define-color popover_fg_color @window_fg_color;
+
+@define-color dialog_bg_color @window_bg_color;
+@define-color dialog_fg_color @window_fg_color;
+
+@define-color sidebar_bg_color @card_bg_color;
+@define-color sidebar_fg_color @card_fg_color;
+@define-color sidebar_backdrop_color alpha({{colors.surface_variant.default.hex}}, {{custom.opacity}});
+@define-color sidebar_shade_color @card_shade_color;
+
+@define-color warning_bg_color {{colors.warning_container.default.hex}};
+@define-color warning_fg_color {{colors.on_warning_container.default.hex}};
+@define-color warning_color {{colors.warning.default.hex}};
+
+@define-color error_bg_color {{colors.error_container.default.hex}};
+@define-color error_fg_color {{colors.on_error_container.default.hex}};
+@define-color error_color {{colors.error.default.hex}};
+
+@define-color success_bg_color {{colors.success_container.default.hex}};
+@define-color success_fg_color {{colors.on_success_container.default.hex}};
+@define-color success_color {{colors.success.default.hex}};
+
+@define-color destructive_bg_color {{colors.danger_container.default.hex}};
+@define-color destructive_fg_color {{colors.on_danger_container.default.hex}};
+@define-color destructive_color {{colors.danger.default.hex}};
+
+@define-color panel_bg_color @window_bg_color;
+@define-color panel_fg_color @window_fg_color;