new framework

lib/bbs/theme.rb

@@ -0,0 +1,128 @@
+# frozen_string_literal: true
+
+module BBS
+  # A Theme maps named style roles (e.g. :window_border, :button_focused)
+  # to ANSI SGR sequences. Widgets fetch styles via Widget#style(key).
+  #
+  # Two presets are provided:
+  #   Theme.synchronet — yellow/cyan Synchronet-inspired palette
+  #   Theme.mono       — black & white, for terminals without color
+  class Theme
+    attr_reader :styles, :name
+
+    def initialize(name, styles)
+      @name   = name
+      @styles = styles
+    end
+
+    def style(key)        = @styles[key]
+    def [](key)           = @styles[key]
+    def merge(overrides)  = Theme.new(@name, @styles.merge(overrides))
+
+    def self.synchronet
+      Theme.new(:synchronet, {
+        screen:           "\e[40m",
+        text:             "\e[0;37;40m",
+        text_dim:         "\e[0;2;37;40m",
+        text_bright:      "\e[1;37;40m",
+        label:            "\e[0;36;40m",
+        accent:           "\e[1;33;40m",
+        success:          "\e[1;32;40m",
+        warning:          "\e[1;33;40m",
+        error:            "\e[1;31;40m",
+
+        window_bg:        "\e[44m",
+        window_border:    "\e[1;37;44m",
+        window_title:     "\e[1;33;44m",
+        window_title_focused: "\e[1;30;47m",
+        window_text:      "\e[0;37;44m",
+        window_shadow:    "\e[40m",
+
+        menubar:          "\e[1;30;47m",
+        menubar_hotkey:   "\e[1;31;47m",
+        menubar_selected: "\e[1;37;42m",
+        menubar_sel_hot:  "\e[1;33;42m",
+
+        menu_bg:          "\e[1;37;44m",
+        menu_text:        "\e[0;37;44m",
+        menu_hotkey:      "\e[1;33;44m",
+        menu_selected:    "\e[1;37;46m",
+        menu_disabled:    "\e[0;2;37;44m",
+        menu_border:      "\e[1;37;44m",
+
+        statusbar:        "\e[1;30;47m",
+        statusbar_key:    "\e[1;31;47m",
+
+        button:           "\e[0;30;47m",
+        button_focused:   "\e[1;37;42m",
+        button_hotkey:    "\e[1;31;47m",
+        button_disabled:  "\e[0;2;30;47m",
+
+        input:            "\e[1;37;44m",
+        input_focused:    "\e[1;30;47m",
+        input_label:      "\e[0;36;40m",
+
+        listbox:          "\e[0;37;44m",
+        listbox_selected: "\e[1;37;46m",
+        listbox_focused:  "\e[1;30;47m",
+        listbox_header:   "\e[1;33;44m",
+
+        scrollbar:        "\e[0;36;44m",
+        scrollbar_thumb:  "\e[1;37;46m",
+
+        check_on:         "\e[1;32;44m",
+        check_off:        "\e[0;37;44m",
+
+        reset:            "\e[0m",
+      }.freeze).freeze
+    end
+
+    def self.mono
+      Theme.new(:mono, {
+        screen:           "",
+        text:             "\e[0;37m",
+        text_dim:         "\e[0;2;37m",
+        text_bright:      "\e[1;37m",
+        label:            "\e[0;37m",
+        accent:           "\e[1;37m",
+        success:          "\e[1;37m",
+        warning:          "\e[1;37m",
+        error:            "\e[7m",
+        window_bg:        "",
+        window_border:    "\e[1;37m",
+        window_title:     "\e[1;37m",
+        window_title_focused: "\e[7m",
+        window_text:      "\e[0;37m",
+        window_shadow:    "\e[2;37m",
+        menubar:          "\e[7m",
+        menubar_hotkey:   "\e[1;7m",
+        menubar_selected: "\e[1m",
+        menubar_sel_hot:  "\e[1;4m",
+        menu_bg:          "\e[7m",
+        menu_text:        "\e[7m",
+        menu_hotkey:      "\e[1;7m",
+        menu_selected:    "\e[1;4m",
+        menu_disabled:    "\e[2;7m",
+        menu_border:      "\e[7m",
+        statusbar:        "\e[7m",
+        statusbar_key:    "\e[1;4;7m",
+        button:           "\e[7m",
+        button_focused:   "\e[1;4;7m",
+        button_hotkey:    "\e[1;4;7m",
+        button_disabled:  "\e[2;7m",
+        input:            "\e[4m",
+        input_focused:    "\e[1;4m",
+        input_label:      "\e[0;37m",
+        listbox:          "\e[0;37m",
+        listbox_selected: "\e[7m",
+        listbox_focused:  "\e[1;7m",
+        listbox_header:   "\e[1;4m",
+        scrollbar:        "\e[2;37m",
+        scrollbar_thumb:  "\e[1;37m",
+        check_on:         "\e[1;7m",
+        check_off:        "\e[0;37m",
+        reset:            "\e[0m",
+      }.freeze).freeze
+    end
+  end
+end