Class: SwingController

Inherits:
Object show all
Includes:
Observable
Defined in:
lib/ext/projector/projector.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SwingController

Returns a new instance of SwingController.



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# File 'lib/ext/projector/projector.rb', line 251

def initialize
  @content = nil
  @drag = false
  @ratio_x = 0.01
  @ratio_y = 0.01
  @start_x = 0
  @start_y = 0
end

Instance Attribute Details

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/ext/projector/projector.rb', line 249

def content
  @content
end

Instance Method Details

#motion(event) ⇒ Object 



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# File 'lib/ext/projector/projector.rb', line 285

def motion(event)
  @drag or return self
  swing_to(event.x, event.y)
  self
end

#press(event) ⇒ Object 



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# File 'lib/ext/projector/projector.rb', line 278

def press(event)
  @drag = true
  @start_x, @start_y = event.x, event.y
  content.begin_work
  self
end

#region(allocation) ⇒ Object 



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# File 'lib/ext/projector/projector.rb', line 272

def region(allocation)
  @ratio_x = 1.0 / allocation.width.to_f
  @ratio_y = 1.0 / allocation.height.to_f
  self
end

#release(event) ⇒ Object 



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# File 'lib/ext/projector/projector.rb', line 291

def release(event)
  swing_to(event.x, event.y)
  content.commit
  @drag = false
  self
end

#update ⇒ Object 



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# File 'lib/ext/projector/projector.rb', line 266

def update
  changed
  notify_observers
  self
end