module Rabbit::Renderer::Display::Base

# File lib/rabbit/renderer/display/base.rb, line 25
def initialize(*args, &block)
  @surface = nil
  @size = nil
  @size_dirty = true
  super
end

# File lib/rabbit/renderer/display/base.rb, line 67
def attach_to(window, container=nil)
  @window = window
  @container = container || @window
end

# File lib/rabbit/renderer/display/base.rb, line 94
def create_pango_context
  context = widget.create_pango_context
  set_font_resolution(context)
  context
end

# File lib/rabbit/renderer/display/base.rb, line 100
def create_pango_layout(text)
  layout = widget.create_pango_layout(text)
  set_font_resolution(layout.context)
  layout
end

# File lib/rabbit/renderer/display/base.rb, line 72
def detach
  @window = nil
  @container = nil
end

# File lib/rabbit/renderer/display/base.rb, line 110
def draw_slide(slide, simulation)
  set_size_ratio(slide.size_ratio)

  if simulation
    super
  else
    save_context do
      scale_context(*@size.logical_scale)
      translate_context(@size.logical_margin_left,
                        @size.logical_margin_top)
      super
    end

    unless @size.have_logical_margin?
      return
    end

    margin_background = make_color("black")
    save_context do
      scale_context(*@size.logical_scale)
      if @size.have_logical_margin_x?
        draw_rectangle(true,
                       0,
                       0,
                       @size.logical_margin_left,
                       @size.logical_height,
                       margin_background)
        draw_rectangle(true,
                       @size.logical_margin_left + @size.logical_width,
                       0,
                       @size.logical_margin_right,
                       @size.logical_height,
                       margin_background)
      end
      if @size.have_logical_margin_y?
        draw_rectangle(true,
                       0,
                       0,
                       @size.logical_width,
                       @size.logical_margin_top,
                       margin_background)
        draw_rectangle(true,
                       0,
                       @size.logical_margin_top + @size.logical_height,
                       @size.logical_width,
                       @size.logical_margin_bottom,
                       margin_background)
      end
    end
  end
end

# File lib/rabbit/renderer/display/base.rb, line 41
def height
  refresh_size
  if @size
    @size.logical_height
  else
    nil
  end
end

# File lib/rabbit/renderer/display/base.rb, line 87
def make_layout(text)
  attrs, text = Pango.parse_markup(text)
  layout = create_pango_layout(text)
  layout.set_attributes(attrs)
  layout
end

# File lib/rabbit/renderer/display/base.rb, line 63
def redraw
  widget.queue_draw
end

# File lib/rabbit/renderer/display/base.rb, line 50
def size
  refresh_size
  @size
end

# File lib/rabbit/renderer/display/base.rb, line 82
def toggle_blackout
  super
  update_menu
end

# File lib/rabbit/renderer/display/base.rb, line 77
def toggle_whiteout
  super
  update_menu
end

# File lib/rabbit/renderer/display/base.rb, line 55
def update_size(w, h)
  return if @real_width == w and @real_height == h

  @real_width = w
  @real_height = h
  @size_dirty = true
end

# File lib/rabbit/renderer/display/base.rb, line 106
def update_title
  @canvas.update_title(@canvas.slide_title)
end

# File lib/rabbit/renderer/display/base.rb, line 32
def width
  refresh_size
  if @size
    @size.logical_width
  else
    nil
  end
end

# File lib/rabbit/renderer/display/base.rb, line 198
def queue_draw
  widget.queue_draw
end

# File lib/rabbit/renderer/display/base.rb, line 192
def refresh_size
  return unless @size_dirty
  set_size(@real_width, @real_height, @size.ratio)
  @size_dirty = false
end

# File lib/rabbit/renderer/display/base.rb, line 168
def set_default_size(w, h)
  @real_width = w
  @real_height = h
  ratio = @base_width.to_f / @base_height.to_f
  set_size(w, h, ratio)
end

# File lib/rabbit/renderer/display/base.rb, line 175
def set_size(w, h, ratio)
  @size = Size.new(@base_width,
                   @base_height,
                   w,
                   h,
                   ratio)
end

# File lib/rabbit/renderer/display/base.rb, line 183
def set_size_ratio(ratio)
  ratio ||= @base_width.to_f / @base_height.to_f
  return if @size.ratio == ratio

  w = @size.real_width
  h = @size.real_height
  set_size(w, h, ratio)
end

# File lib/rabbit/renderer/display/base.rb, line 163
def set_surface(surface)
  @surface = surface
  set_default_size(@surface.width, @surface.height)
end