Class: Redwood::Colormap
Constant Summary collapse
- DEFAULT_COLORS =
{ :text => { :fg => "white", :bg => "black" }, :status => { :fg => "white", :bg => "blue", :attrs => ["bold"] }, :index_old => { :fg => "white", :bg => "default" }, :index_new => { :fg => "white", :bg => "default", :attrs => ["bold"] }, :index_starred => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :index_draft => { :fg => "red", :bg => "default", :attrs => ["bold"] }, :labellist_old => { :fg => "white", :bg => "default" }, :labellist_new => { :fg => "white", :bg => "default", :attrs => ["bold"] }, :twiddle => { :fg => "blue", :bg => "default" }, :label => { :fg => "yellow", :bg => "default" }, :message_patina => { :fg => "black", :bg => "green" }, :alternate_patina => { :fg => "black", :bg => "blue" }, :missing_message => { :fg => "black", :bg => "red" }, :attachment => { :fg => "cyan", :bg => "default" }, :cryptosig_valid => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :cryptosig_valid_untrusted => { :fg => "yellow", :bg => "blue", :attrs => ["bold"] }, :cryptosig_unknown => { :fg => "cyan", :bg => "default" }, :cryptosig_invalid => { :fg => "yellow", :bg => "red", :attrs => ["bold"] }, :generic_notice_patina => { :fg => "cyan", :bg => "default" }, :quote_patina => { :fg => "yellow", :bg => "default" }, :sig_patina => { :fg => "yellow", :bg => "default" }, :quote => { :fg => "yellow", :bg => "default" }, :sig => { :fg => "yellow", :bg => "default" }, :to_me => { :fg => "green", :bg => "default" }, :starred => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :starred_patina => { :fg => "yellow", :bg => "green", :attrs => ["bold"] }, :alternate_starred_patina => { :fg => "yellow", :bg => "blue", :attrs => ["bold"] }, :snippet => { :fg => "cyan", :bg => "default" }, :option => { :fg => "white", :bg => "default" }, :tagged => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :draft_notification => { :fg => "red", :bg => "default", :attrs => ["bold"] }, :completion_character => { :fg => "white", :bg => "default", :attrs => ["bold"] }, :horizontal_selector_selected => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :horizontal_selector_unselected => { :fg => "cyan", :bg => "default" }, :search_highlight => { :fg => "black", :bg => "yellow", :attrs => ["bold"] }, :system_buf => { :fg => "blue", :bg => "default" }, :regular_buf => { :fg => "white", :bg => "default" }, :modified_buffer => { :fg => "yellow", :bg => "default", :attrs => ["bold"] }, :date => { :fg => "white", :bg => "default"}, :size_widget => { :fg => "white", :bg => "default"}, }
- @@instance =
nil
Class Method Summary collapse
-
.color_for(*a) ⇒ Object
Performance shortcut.
- .instance ⇒ Object
- .method_missing(meth, *a) ⇒ Object
Instance Method Summary collapse
- #add(sym, fg, bg, attr = nil, highlight = nil) ⇒ Object
- #color_for(sym, highlight = false) ⇒ Object
- #highlight_for(fg, bg, attrs) ⇒ Object
- #highlight_sym(sym) ⇒ Object
-
#initialize {|_self| ... } ⇒ Colormap
constructor
A new instance of Colormap.
-
#populate_colormap ⇒ Object
Try to use the user defined colors, in case of an error fall back to the default ones.
- #reset ⇒ Object
- #sym_is_defined(sym) ⇒ Object
Constructor Details
#initialize {|_self| ... } ⇒ Colormap
Returns a new instance of Colormap.
71 72 73 74 75 76 77 78 79 |
# File 'lib/sup/colormap.rb', line 71 def initialize raise "only one instance can be created" if @@instance @@instance = self @color_pairs = {[Ncurses::COLOR_WHITE, Ncurses::COLOR_BLACK] => 0} @users = [] @next_id = 0 reset yield self if block_given? end |
Class Method Details
.color_for(*a) ⇒ Object
Performance shortcut
230 |
# File 'lib/sup/colormap.rb', line 230 def self.color_for *a; @@instance.color_for *a; end |
.instance ⇒ Object
224 |
# File 'lib/sup/colormap.rb', line 224 def self.instance; @@instance; end |
Instance Method Details
#add(sym, fg, bg, attr = nil, highlight = nil) ⇒ Object
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 |
# File 'lib/sup/colormap.rb', line 89 def add sym, fg, bg, attr=nil, highlight=nil raise ArgumentError, "color for #{sym} already defined" if @entries.member? sym raise ArgumentError, "color '#{fg}' unknown" unless (-1...Ncurses::NUM_COLORS).include? fg raise ArgumentError, "color '#{bg}' unknown" unless (-1...Ncurses::NUM_COLORS).include? bg attrs = [attr].flatten.compact @entries[sym] = [fg, bg, attrs, nil] if not highlight highlight = highlight_sym(sym) @entries[highlight] = highlight_for(fg, bg, attrs) + [nil] end @highlights[sym] = highlight end |
#color_for(sym, highlight = false) ⇒ Object
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 |
# File 'lib/sup/colormap.rb', line 144 def color_for sym, highlight=false sym = @highlights[sym] if highlight return Ncurses::COLOR_BLACK if sym == :none raise ArgumentError, "undefined color #{sym}" unless @entries.member? sym ## if this color is cached, return it fg, bg, attrs, color = @entries[sym] return color if color if(cp = @color_pairs[[fg, bg]]) ## nothing else ## need to get a new colorpair @next_id = (@next_id + 1) % Ncurses::MAX_PAIRS @next_id += 1 if @next_id == 0 # 0 is always white on black id = @next_id debug "colormap: for color #{sym}, using id #{id} -> #{fg}, #{bg}" Ncurses.init_pair id, fg, bg or raise ArgumentError, "couldn't initialize curses color pair #{fg}, #{bg} (key #{id})" cp = @color_pairs[[fg, bg]] = Ncurses.COLOR_PAIR(id) ## delete the old mapping, if it exists if @users[cp] @users[cp].each do |usym| warn "dropping color #{usym} (#{id})" @entries[usym][3] = nil end @users[cp] = [] end end ## by now we have a color pair color = attrs.inject(cp) { |color, attr| color | attr } @entries[sym][3] = color # fill the cache (@users[cp] ||= []) << sym # record entry as a user of that color pair color end |
#highlight_for(fg, bg, attrs) ⇒ Object
109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 |
# File 'lib/sup/colormap.rb', line 109 def highlight_for fg, bg, attrs hfg = case fg when Ncurses::COLOR_BLUE Ncurses::COLOR_WHITE when Ncurses::COLOR_YELLOW, Ncurses::COLOR_GREEN fg else Ncurses::COLOR_BLACK end hbg = case bg when Ncurses::COLOR_CYAN Ncurses::COLOR_YELLOW when Ncurses::COLOR_YELLOW Ncurses::COLOR_BLUE else Ncurses::COLOR_CYAN end attrs = if fg == Ncurses::COLOR_WHITE && attrs.include?(Ncurses::A_BOLD) [Ncurses::A_BOLD] else case hfg when Ncurses::COLOR_BLACK [] else [Ncurses::A_BOLD] end end [hfg, hbg, attrs] end |
#highlight_sym(sym) ⇒ Object
105 106 107 |
# File 'lib/sup/colormap.rb', line 105 def highlight_sym sym "#{sym}_highlight".intern end |
#populate_colormap ⇒ Object
Try to use the user defined colors, in case of an error fall back to the default ones.
187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 |
# File 'lib/sup/colormap.rb', line 187 def populate_colormap user_colors = if File.exists? Redwood::COLOR_FN debug "loading user colors from #{Redwood::COLOR_FN}" Redwood::load_yaml_obj Redwood::COLOR_FN end Colormap::DEFAULT_COLORS.merge(user_colors||{}).each_pair do |k, v| fg = begin Ncurses.const_get "COLOR_#{v[:fg].to_s.upcase}" rescue NameError warn "there is no color named \"#{v[:fg]}\"" Ncurses::COLOR_GREEN end bg = begin Ncurses.const_get "COLOR_#{v[:bg].to_s.upcase}" rescue NameError warn "there is no color named \"#{v[:bg]}\"" Ncurses::COLOR_RED end attrs = (v[:attrs]||[]).map do |a| begin Ncurses.const_get "A_#{a.upcase}" rescue NameError warn "there is no attribute named \"#{a}\", using fallback." nil end end.compact highlight_symbol = v[:highlight] ? :"#{v[:highlight]}_color" : nil symbol = (k.to_s + "_color").to_sym add symbol, fg, bg, attrs, highlight_symbol end end |
#reset ⇒ Object
81 82 83 84 85 86 87 |
# File 'lib/sup/colormap.rb', line 81 def reset @entries = {} @highlights = { :none => highlight_sym(:none)} @entries[highlight_sym(:none)] = highlight_for(Ncurses::COLOR_WHITE, Ncurses::COLOR_BLACK, []) + [nil] end |
#sym_is_defined(sym) ⇒ Object
181 182 183 |
# File 'lib/sup/colormap.rb', line 181 def sym_is_defined sym return sym if @entries.member? sym end |