Class: Pppt::PresentationWindow

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

Instance Method Summary collapse

Constructor Details

#initialize(data) ⇒ PresentationWindow

Returns a new instance of PresentationWindow.



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# File 'lib/pppt/presentation_window.rb', line 2

def initialize(data)
  @pages = Pppt::PresentationPages.new(data)
  @current = 0
  @max = @pages.size
  init_screen
end

Instance Method Details

#index ⇒ Object

目次ページ



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# File 'lib/pppt/presentation_window.rb', line 24

def index
  w = Curses.stdscr
  current = @current
  start_point = current - w.maxy / 2
  loop do
    height = w.maxy - 5
    w.clear
    w.setpos(1, 0)
    w.addstr(' -- index --'.center(w.maxx - 1))
    vindex = 3
    start_point = current if start_point > current
    start_point = current - height if current - start_point >= height
    start_point = 0 if start_point < 0
    @pages.data.each_with_index do |page, i|
      next if i < start_point
      w.setpos(vindex, 0)
      w.addstr(' ' * w.maxx)
      w.setpos(vindex, 3)
      w.standout if i == current
      page_number_string = Pppt::Helpers.format_page_number(page)
      w.addstr(page_number_string + (' ' * (w.maxx - Pppt::Helpers.screen_width(page_number_string) - 4)))
      vindex += 1
      w.standend if i == current
      break if i >= start_point + height
    end
    w.refresh
    Curses.timeout = -1
    c = w.getch
    Curses.timeout = 1000
    case c
    when 27, 8
      return current
    when Curses::KEY_UP, 'k'
      current -= 1 if current > 0
    when Curses::KEY_DOWN, 'j'
      current += 1 if current < @pages.data.length - 1
    when 10, ' '
      @current = current
      return current
    end
  end
end

#next ⇒ Object 



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# File 'lib/pppt/presentation_window.rb', line 9

def next
  @current += 1 if @pages.data.length - 1 > @current
end

#prev ⇒ Object 



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# File 'lib/pppt/presentation_window.rb', line 13

def prev
  @current -= 1 if @current > 0
end

#show(page = nil) ⇒ Object 



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# File 'lib/pppt/presentation_window.rb', line 17

def show(page = nil)
  @current = page || @current
  page_data = @pages.data[@current]
  update_window(Curses.stdscr, page_data)
end