Class: NCursesUI

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cloud, options = {}, params = {}) ⇒ NCursesUI

Returns a new instance of NCursesUI.



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# File 'lib/ncurses_ui.rb', line 13

def initialize cloud, options = {}, params = {}
  params.each { |key, value| send "#{key}=", value }

  if not @audio_backend
    @audio_backend = Object.new
    def @audio_backend.version
      "Audio backend: None" 
    end 
  end

  defaults = {
    :colors => {
      :default => [:cyan, :blue],
      :playlist => [:cyan, :blue],
      :playlist_active => [:white, :blue],
      :progress => [:cyan, :blue],
      :progress_bar => [:blue, :cyan],
      :buffer_bar => [:blue, :magenta],
      :title => [:cyan, :black],
      :artist => [:cyan, :black],
      :status => [:magenta, :black]
    },
    :palette => {}
  }.freeze

  @options = defaults.deep_merge(options || {})
  @cloud = cloud
  @state = :running
  @frac = 0
  @title = "None"
  @op = " "
  @time = 0
  @timeleft = 0
  @playlist = []
end

Instance Attribute Details

#audio_backend ⇒ Object

Returns the value of attribute audio_backend.



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# File 'lib/ncurses_ui.rb', line 11

def audio_backend
  @audio_backend
end

#logger ⇒ Object

Returns the value of attribute logger.



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# File 'lib/ncurses_ui.rb', line 11

def logger
  @logger
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/ncurses_ui.rb', line 205

def close
  @state = :close
end

#cloud_update(arg) ⇒ Object 



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# File 'lib/ncurses_ui.rb', line 132

def cloud_update(arg)
  case arg[:state]
  when :error
    @error = "Error: #{arg[:error]}"
  when :load
    @playlist |= arg[:tracks]
    @l.list = @playlist if @l
  when :shuffle
    @playlist = arg[:tracks]
    @l.list = @playlist if @l
  when :next, :previous
    pos = arg[:position]
    @l.active = pos if @l
  when :download
    if arg[:error]
      @error = "Error: #{arg[:error]}"
    end
    if arg[:count]
      count = arg[:count]
      if(count > 0)
        @l.height = -1
        @d.visible = true
        @d.count = count
        @d.title = arg[:name] if arg[:name]
      else
        @l.height = 0
        @d.visible = false
        @d.title = ""
      end
    end
  when :status
    if arg[:type]
      status("#{arg[:type]}: #{arg[:value]}")
    end
  end
end

#player_update(arg) ⇒ Object 



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# File 'lib/ncurses_ui.rb', line 169

def player_update(arg)

  case arg[:state]
  when :load
    track = arg[:track]
    if track.nil?
      @error = "Error: Nothing found!"
    else
      @error = nil
      @title = track["title"]
      @username = track["user"]["username"]
      @timetotal = track["duration"]
      @error = "Error: #{track[:error]}" if track[:error]
    end
  when :info
    frame = arg[:frame].to_f
    frames = frame + arg[:frameleft]
    @frac = frame/frames
    @time = arg[:time].to_i
  when :pause
    @op = "\u2161"
  when :resume, :play
    @op = "\u25B6"
  when :stop
    @op = "\u25FC"
  when :error
    @error = "Error: #{arg[:error]}"
  when :buffer
    @bufferPercentage = arg[:value].to_i || 0
  when :status
    if arg[:type]
      status("#{arg[:type]}: #{arg[:value]}")
    end
  end
end

#run ⇒ Object 



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# File 'lib/ncurses_ui.rb', line 49

def run
  begin
    stdscr = Curses.init_screen
    Curses.start_color
    Colors.init @options[:colors], @options[:palette]
    stdscr.keypad true
    Curses.nonl
    Curses.cbreak
    Curses.noecho
    Curses.curs_set 0
    Curses.timeout = 5
    @p = NProgress.new stdscr, 0, 0, :progress, :progress_bar, :buffer_bar
    @l = NPlaylist.new stdscr, 4, 0, :playlist, :playlist_active, 0, 0, @playlist
    @i = NInfobox.new self, stdscr, 4, 0, :playlist, 0, 9
    @d = NDownloadBox.new stdscr, Curses.lines-1, 0, :default, 0, 1
    @l.active = 0
    last_ch = nil
    while(@state != :close)
      ch = Curses.getch
      last_ch = ch if ch
      Curses.setpos 3, 0
      Curses.clrtoeol
      # Nutils.print stdscr, 3, 0, "Test %s" % [last_ch], :red
      case ch
      when Curses::KEY_RESIZE
        @p.resize
        @l.resize
        @i.resize
        @d.resize
        Curses.refresh
      when 110, 78, 'n', 'N', Curses::KEY_DOWN
        @cloud.nextTrack
      when 112, 80, 'p', 'P', Curses::KEY_UP
        @cloud.prevTrack
      when 113, 81, 'q', 'Q', 27, Curses::KEY_EXIT
        @cloud.quit
      when 61, 43, '=', '+'
        @cloud.volumeUp
      when 45, 95, '-', '_'
        @cloud.volumeDown
      when 109, 77, 'm', 'M'
        @cloud.toggleMute
      when 68, 100, 'd', 'D'
        @cloud.download
      when 118, 86, 'v', 'V'
        @i.visible = !@i.visible
        @l.dirty = true
      when 32, ' '
        @cloud.pause
      end

      statusLine = @status || @error || ""

      Nutils.print stdscr, 3, 0, "#{statusLine}", :status
      Curses.refresh
      tr = " %s " % [Nutils.timestr(@timetotal)]
      t = " %-#{Curses.cols-tr.size-1}s%s" % [Nutils.timestr(@time), tr]
      @p.value = @frac
      @p.subvalue = (@bufferPercentage || 0)/100.0
      @p.text = t
      @p.refresh
      Nutils.print stdscr, 1, 0, "#{@op} #{@title}", :title
      Nutils.print stdscr, 2, 0, "  by #{@username}", :artist
      @l.refresh
      @i.refresh
      @d.refresh
      stdscr.refresh
    end
  rescue => ex
  ensure
    @l.close if @l
    @p.close if @p
    stdscr.close if stdscr
    Curses.echo
    Curses.nocbreak
    Curses.nl
    Curses.close_screen
    puts ex.inspect if ex
    puts ex.backtrace if ex
    # Colors.debug
  end
end

#status(msg) ⇒ Object 



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# File 'lib/ncurses_ui.rb', line 209

def status msg
  @status = msg
  if @statusTimeout
    @statusTimeout.exit
  end
  @statusTimeout = Thread.new do
    sleep 5
    @status = nil
    @statusTimeout = nil
  end
end