Class: UI::Colors

Inherits:
Object
  • Object
show all
Defined in:
lib/ektoplayer/ui/colors.rb

Constant Summary collapse

COLORS = 
{
   none:     -1, 
   white:    ICurses::COLOR_WHITE,
   black:    ICurses::COLOR_BLACK,
   red:      ICurses::COLOR_RED,
   blue:     ICurses::COLOR_BLUE,
   cyan:     ICurses::COLOR_CYAN,
   green:    ICurses::COLOR_GREEN,
   yellow:   ICurses::COLOR_YELLOW,
   magenta:  ICurses::COLOR_MAGENTA
}
ATTRIBUTES = 
{
   bold:  ICurses::A_BOLD,  standout:  ICurses::A_STANDOUT,
   blink: ICurses::A_BLINK, underline: ICurses::A_UNDERLINE
}

Class Method Summary collapse

Class Method Details

.[](name) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 109

def self.[](name)   @@aliases[name] || 0  end

.add_attributes(*attrs) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 103

def self.add_attributes(*attrs)
   flags = 0
   attrs.each { |attr| flags |= ATTRIBUTES[attr] }
   flags
end

.default_bg(color) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 72

def self.default_bg(color)
   @@default_bg = COLORS[color]
end

.default_colors(fg = -1,, bg = -1)) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 76

def self.default_colors(fg = -1, bg = -1)
   self.default_fg(fg)
   self.default_bg(bg)
end

.default_fg(color) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 68

def self.default_fg(color)
   @@default_fg = COLORS[color]
end

.get(name) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 110

def self.get(name)  @@aliases[name] || 0  end

.get_volatile(name) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 118

def self.get_volatile(name)
   @@volatile[name] || 0
end

.init_pair_cached(fg, bg) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 81

def self.init_pair_cached(fg, bg)
   if !fg or fg == :default
      fg = @@default_fg
   else
      fg = COLORS[fg]
   end

   if !bg or bg == :default
      bg = @@default_bg
   else
      bg = COLORS[bg]
   end

   unless id = @@cached[fg][bg]
      id = @@cached[fg][bg] = @@id
      @@id += 1
   end

   ICurses.init_pair(id, fg, bg) #or fail
   ICurses.color_pair(id)
end

.reset ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 66

def self.reset; self.start end

.set(name, fg, bg = nil, *attrs) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 112

def self.set(name, fg, bg = nil, *attrs)
   @@aliases[name] = self.init_pair_cached(fg, bg)
   attrs.each { |attr| @@aliases[name] |= ATTRIBUTES[attr] }
   @@aliases[name]
end

.set_volatile(name, fg, bg) ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 122

def self.set_volatile(name, fg, bg)
   fg, bg = COLORS[fg], COLORS[bg]

   unless id = @@volatile_ids[name]
      id = @@volatile_ids[name] = @@id
      @@id += 1
   end

   @@volatile[name] = ICurses.init_pair(id, fg, bg)
end

.start ⇒ Object 



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# File 'lib/ektoplayer/ui/colors.rb', line 58

def self.start
   @@id           ||= 1
   @@aliases      ||= {}
   @@volatile     ||= {}
   @@volatile_ids ||= {}
   @@cached       ||= Hash.new { |h,k| h[k] = {} }
   @@default_fg = @@default_bg = -1
end