module Rabbit::Renderer::Display::Graffiti

# File lib/rabbit/renderer/display/graffiti.rb, line 33
def initialize(*args, &block)
  super
  init_graffiti
end

# File lib/rabbit/renderer/display/graffiti.rb, line 46
def can_undo_graffiti?
  @graffiti.can_undo?
end

# File lib/rabbit/renderer/display/graffiti.rb, line 70
def change_graffiti_color
  @graffiti.change_color do
    redraw
  end
end

# File lib/rabbit/renderer/display/graffiti.rb, line 60
def clear_graffiti
  @graffiti.clear
  @area.queue_draw
end

# File lib/rabbit/renderer/display/graffiti.rb, line 38
def graffiti_mode?
  @graffiti_mode
end

# File lib/rabbit/renderer/display/graffiti.rb, line 42
def have_graffiti?
  @graffiti.have_graffiti?
end

# File lib/rabbit/renderer/display/graffiti.rb, line 50
def toggle_graffiti_mode
  @graffiti_mode = !@graffiti_mode
  if graffiti_mode?
    update_cursor(:pencil)
  else
    restore_cursor(nil)
  end
  update_menu
end

# File lib/rabbit/renderer/display/graffiti.rb, line 65
def undo_graffiti
  @graffiti.undo
  @area.queue_draw
end

# File lib/rabbit/renderer/display/graffiti.rb, line 117
def draw_graffiti
  @graffiti.draw_all_segment(self)
end

# File lib/rabbit/renderer/display/graffiti.rb, line 121
def graffiti_mode_action
  @canvas.action("ToggleGraffitiMode")
end

# File lib/rabbit/renderer/display/graffiti.rb, line 77
def init_graffiti
  @graffiti = Rabbit::Graffiti::Processor.new
  @graffiti_mode = false

  pressed_button = nil
  target_button = 1

  add_button_press_hook do |event|
    pressed_button = event.button
    if graffiti_mode? and event.button == target_button
      @graffiti.button_press(event.x, event.y, width, height)
      true
    else
      false
    end
  end

  add_button_release_hook do |event, last_button_press_event|
    pressed_button = nil
    if graffiti_mode? and event.button == target_button
      @graffiti.button_release(event.x, event.y, width, height)
      true
    else
      false
    end
  end

  add_motion_notify_hook do |x, y|
    if graffiti_mode? and
        @graffiti.dragging? and
        pressed_button == target_button
      @graffiti.button_motion(x, y, width, height)
      redraw
      true
    else
      false
    end
  end
end