Class: UI::Canvas

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

Class Method Summary collapse

Class Method Details

.enable_resize_detection ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 27

def self.enable_resize_detection
   Signal.trap('WINCH') { @@want_resize = true }
end

.run ⇒ Object 



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

def self.run
   self.start
   yield
ensure
   self.stop
end

.start ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 13

def self.start
   @@widget = nil
   @@want_resize = false
   @@updating = Mutex.new

   %w(initscr cbreak noecho start_color use_default_colors).
      each(&ICurses.method(:send))
   ICurses.mousemask(ICurses::ALL_MOUSE_EVENTS | ICurses::REPORT_MOUSE_POSITION)
   ICurses.stdscr.getch1(1) # first getch() clears screen?
   UI::Colors.start

   self.enable_resize_detection
end

.stop ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 33

def self.stop;        ICurses.endwin    end

.sub(cls, **opts) ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 35

def self.sub(cls, **opts)
   opts[:size] ||= UI::Size.new(height: ICurses.lines, width: ICurses.cols)
   opts[:pos]  ||= UI::Point.new
   widget = cls.new(**opts)
   @@widget ||= widget
   widget
end

.update_screen(force_redraw = false, force_resize = false) ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 43

def self.update_screen(force_redraw=false, force_resize=false)
   if @@updating.try_lock
      begin
         if @@want_resize or force_resize
            @@want_resize = false
            h, w = IO.console.winsize()
            ICurses.resizeterm(h, w)
            @@widget.size=(Size.new(height: h, width: w)) if @@widget
            @@widget.display(true, true, true) if @@widget
         else
            @@widget.display(true, force_redraw) if @@widget
         end
      rescue UI::WidgetSizeError
         ICurses.stdscr.clear
         ICurses.stdscr.addstr('terminal too small!')
      rescue
         Ektoplayer::Application.log(self, $!)
      end

      @@updating.unlock
   end
end

.widget ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 31

def self.widget;      @@widget          end

.widget=(w) ⇒ Object 



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# File 'lib/ektoplayer/ui.rb', line 32

def self.widget=(w)   @@widget = w      end