Update flake, theme gtk, add vscode cache

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

users/configs/gtk/default.nix

@@ -1,10 +1,50 @@
-{ user ? throw "user argument is required" }: { config, ... }:
+{ user ? throw "user argument is required" }: { config, pkgs, ... }:
 
 let
   hmConfig = config.home-manager.users."${user.name}";
 in
 {
   home-manager.users."${user.name}" = {
-    gtk.gtk2.configLocation = "${hmConfig.xdg.configHome}/gtk-2.0/gtkrc";
+    gtk = {
+      enable = true;
+
+      theme = {
+        package = pkgs.adw-gtk3;
+        name = "adw-gtk3-dark";
+      };
+
+      gtk2.configLocation = "${hmConfig.xdg.configHome}/gtk-2.0/gtkrc";
+      gtk3.extraCss = "@import './theme.css';";
+      gtk4.extraCss = "@import './theme.css';";
+    };
+
+    programs.matugen.settings.templates = {
+      gtk3 = {
+        input_path = ./theme.css;
+        output_path = "${hmConfig.xdg.configHome}/gtk-3.0/theme.css";
+      };
+      gtk4 = {
+        input_path = ./theme.css;
+        output_path = "${hmConfig.xdg.configHome}/gtk-4.0/theme.css";
+      };
+    };
+
+    theme.extraConfig = let name = "theme-gtk"; in
+      "${pkgs.writeShellApplication {
+        inherit name;
+        runtimeInputs = with pkgs; [ glib ];
+        text = ''
+          MODE=$(cat "${hmConfig.theme.configDir}/mode")
+
+          if [ "$MODE" = "light" ]; then
+            GTK_THEME="adw-gtk3"
+          else
+            GTK_THEME="adw-gtk3-dark"
+          fi
+
+          gsettings set org.gnome.desktop.interface gtk-theme "$GTK_THEME"
+          gsettings set org.gnome.desktop.interface color-scheme "prefer-$MODE"
+        '';
+      }}/bin/${name} &";
   };
 }

users/configs/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.default.hex}};
+@define-color accent_color @accent_bg_color;
+
+@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.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.default.hex}};
+@define-color warning_color @warning_bg_color;
+
+@define-color error_bg_color {{colors.error_container.default.hex}};
+@define-color error_fg_color {{colors.on_error.default.hex}};
+@define-color error_color @error_bg_color;
+
+@define-color success_bg_color {{colors.success_container.default.hex}};
+@define-color success_fg_color {{colors.on_success.default.hex}};
+@define-color success_color @success_bg_color;
+
+@define-color destructive_bg_color {{colors.danger_container.default.hex}};
+@define-color destructive_fg_color {{colors.on_danger.default.hex}};
+@define-color destructive_color @destructive_bg_color;
+
+@panel_bg_color @window_bg_color
+@panel_fg_color @window_fg_color