Class: Luck::Display

Inherits:
Object
  • Object
show all
Defined in:
lib/luck/display.rb

Constant Summary collapse

BUTTONS = 
{
  0 => :left,
  1 => :middle,
  2 => :right,
  3 => :release,
  64 => :scrollup,
  65 => :scrolldown
}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ Display

Returns a new instance of Display.



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# File 'lib/luck/display.rb', line 5

def initialize client
  @client = client
  @panes = {}
  @dirty = true
  
  @driver = ANSIDriver.new
end

Instance Attribute Details

#active_control ⇒ Object

Returns the value of attribute active_control.



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# File 'lib/luck/display.rb', line 3

def active_control
  @active_control
end

#active_pane ⇒ Object

Returns the value of attribute active_pane.



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# File 'lib/luck/display.rb', line 3

def active_pane
  @active_pane
end

#client ⇒ Object

Returns the value of attribute client.



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# File 'lib/luck/display.rb', line 3

def client
  @client
end

#dirty ⇒ Object

Returns the value of attribute dirty.



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# File 'lib/luck/display.rb', line 3

def dirty
  @dirty
end

#driver ⇒ Object

Returns the value of attribute driver.



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# File 'lib/luck/display.rb', line 3

def driver
  @driver
end

#modal ⇒ Object

Returns the value of attribute modal.



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# File 'lib/luck/display.rb', line 3

def modal
  @modal
end

#panes ⇒ Object

Returns the value of attribute panes.



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# File 'lib/luck/display.rb', line 3

def panes
  @panes
end

Instance Method Details

#[](pane, control = nil) ⇒ Object 



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# File 'lib/luck/display.rb', line 39

def [] pane, control=nil
  if control
    @panes[pane].controls[control]
  else
    @panes[pane]
  end
end

#alert(name, *args, &blck) ⇒ Object 



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# File 'lib/luck/display.rb', line 27

def alert name, *args, &blck
  @panes[name] = Alert.new(self, *args, &blck)
end

#close ⇒ Object 



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# File 'lib/luck/display.rb', line 19

def close
  @driver.undo_modes
end

#color(c) ⇒ Object 



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# File 'lib/luck/display.rb', line 17

def color c; @driver.color c; end

#cycle_controls ⇒ Object 



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# File 'lib/luck/display.rb', line 89

def cycle_controls
  index = @active_pane.controls.keys.index @active_pane.controls.index(@active_control)
  begin
    index += 1
    index = 0 if index >= @active_pane.controls.size
  end until @active_pane.controls[@active_pane.controls.keys[index]].respond_to? :handle_char
  old = @active_control
  @active_control = @active_pane.controls[@active_pane.controls.keys[index]]
  old.redraw
  @active_control.redraw
end

#cycle_controls_back ⇒ Object 



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# File 'lib/luck/display.rb', line 101

def cycle_controls_back
  index = @active_pane.controls.keys.index @active_pane.controls.key(@active_control)
  begin
    index -= 1
    index = @active_pane.controls.size - 1 if index < 0
  end until @active_pane.controls[@active_pane.controls.keys[index]].respond_to? :handle_char
  old = @active_control
  @active_control = @active_pane.controls[@active_pane.controls.keys[index]]
  old.redraw
  @active_control.redraw
end

#dirty!(pane = nil) ⇒ Object 



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# File 'lib/luck/display.rb', line 31

def dirty! pane=nil
  if pane
    @panes[pane].dirty!
  else
    @dirty = true
  end
end

#focus(*path) ⇒ Object 



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# File 'lib/luck/display.rb', line 47

def focus *path
  self.active_control = self[*path]
end

#handle ⇒ Object 



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# File 'lib/luck/display.rb', line 51

def handle
  handle_stdin
  
  if @driver.resized?
    dirty!
  end
  
  if @dirty
    redraw
    @dirty = false
  else
    panes = @panes.values.select {|pane| pane.dirty? && pane.visible? }
    redraw panes if panes.any?
  end
  
  @panes.each_value {|pane| pane.dirty = false }
end

#handle_stdin ⇒ Object

alt-anything => e*KEY* (same as Esc, key) alt-[ would become e[ which is an ANSI escape

ctrl-stuff becomes weird stuff, i.e. ctrl-space = x00, ctrl-a = x01, ctrl-b = x02

super is not sent?



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# File 'lib/luck/display.rb', line 128

def handle_stdin
  @escapes ||= 0
  @ebuff ||= ''
  
  $stdin.read_nonblock(1024).each_char do |chr|
  
    if @escapes == 0
      if chr == "\e"
        @escapes = 1
      elsif chr == "\t"
        cycle_controls
      elsif chr == "\177"
        route_key :backspace
      else
        route_key chr
      end
      
    elsif @escapes == 1 && chr == '['
      @escapes = 2
    elsif @escapes == 1 && chr == 'O'
      @escapes = 5
      
    elsif @escapes == 2
      if chr == 'A'
        route_key :up
      elsif chr == 'B'
        route_key :down
      elsif chr == 'C'
        route_key :right
      elsif chr == 'D'
        route_key :left
      elsif chr == 'E'
        route_key :center
      elsif chr == 'Z'
        cycle_controls_back
      else
        @ebuff = chr
        @escapes = 3
      end
      @escapes = 0 if @escapes == 2
      
    elsif @escapes == 3
      if chr == '~' && @ebuff.to_i.to_s == @ebuff
        route_key case @ebuff.to_i
          when 2; :insert
          when 3; :delete
          when 5; :pageup
          when 6; :pagedown
          when 15; :f5
          when 17; :f6
          when 18; :f7
          when 19; :f8
          when 20; :f9
          when 24; :f12
          else; raise @ebuff.inspect
        end
      elsif @ebuff[0,1] == 'M' && @ebuff.size == 3
        @ebuff += chr
        info, x, y = @ebuff.unpack('xCCC').map{|i| i - 32}
        modifiers = []
        modifiers << :shift if info & 4 == 4
        modifiers << :meta if info & 8 == 8
        modifiers << :control if info & 16 == 16
        pane = pane_at(x, y)
        
        unless modal && modal != pane
          pane.handle_click BUTTONS[info & 71], modifiers, x, y if pane
        end
      elsif @ebuff.size > 10
        raise "long ebuff #{@ebuff.inspect} - #{chr.inspect}"
      else
        @ebuff += chr
        @escapes = 4
      end
      @escapes = 0 if @escapes == 3
      @escapes = 3 if @escapes == 4
      @ebuff = '' if @escapes == 0
      
    elsif @escapes == 5
      if chr == 'H'
        route_key :home
      elsif chr == 'F'
        route_key :end
      elsif chr == 'Q'
        route_key :f2
      elsif chr == 'R'
        route_key :f3
      elsif chr == 'S'
        route_key :f4
      else
        raise "escape 5 #{chr.inspect}"
      end
      @escapes = 0
      
    else
      @escapes = 0
    end
  end
  
  @driver.flush
  
rescue Errno::EAGAIN
rescue EOFError
end

#height ⇒ Object 



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# File 'lib/luck/display.rb', line 14

def height; @driver.height; end

#pane(name, *args, &blck) ⇒ Object 



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# File 'lib/luck/display.rb', line 23

def pane name, *args, &blck
  @panes[name] = Pane.new(self, *args, &blck)
end

#pane_at(x, y) ⇒ Object 



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# File 'lib/luck/display.rb', line 233

def pane_at x, y
  @panes.values.reverse.each do |pane|
    return pane if pane.visible? && (pane.x1..pane.x2).include?(x) && (pane.y1..pane.y2).include?(y)
  end
  nil
end

#place(x, y, t) ⇒ Object 



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# File 'lib/luck/display.rb', line 16

def place x,y,t; @driver.put x,y,t; end

#redraw(panes = nil) ⇒ Object 



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# File 'lib/luck/display.rb', line 69

def redraw panes=nil
  unless panes
    @driver.clear
    @driver.cursor_to_home
  end
  
  panes ||= @panes.values
  panes.each {|pane| pane.redraw if pane.visible? }
  modal.redraw if modal
  @panes.each_value {|pane| pane.draw_title if pane.visible? }
  
  @driver.restore_cursor
  @driver.flush
end

#route_key(chr) ⇒ Object 



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# File 'lib/luck/display.rb', line 240

def route_key chr
  @active_control.handle_char chr if @active_control
end

#width ⇒ Object 



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# File 'lib/luck/display.rb', line 13

def width; @driver.width; end