Class: Walt::Operation::ScaleOperation

Inherits:
Base
  • Object
show all
Defined in:
lib/walt/operation/scale.rb

Constant Summary collapse

PROPERTIES = 
[:from, :to]

Instance Method Summary collapse

Methods inherited from Base

#setup

Methods included from Support::AttrDefault

#attr_default

Constructor Details

#initialize(params = {}) ⇒ ScaleOperation

Returns a new instance of ScaleOperation.



16
17
18
19
20
21
22
23
24
 
# File 'lib/walt/operation/scale.rb', line 16

def initialize(params = {})
  super

  params.each do |key, value|
    if PROPERTIES.include?(key.to_sym)
      self.send("#{key}=", value)
    end
  end
end

Instance Method Details

#finalize(view, animation) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/walt/operation/scale.rb', line 26

def finalize(view, animation)
  scale = CABasicAnimation.animationWithKeyPath("transform.scale")

  from = self.from || view.instance_variable_get("@__last_scale") || 1.0
  scale.fromValue = NSNumber.numberWithFloat(from)

  scale.toValue = NSNumber.numberWithFloat(self.to)
  view.instance_variable_set("@__last_scale", scale.toValue.to_f)

  scale.duration = animation.duration
  scale.removedOnCompletion = false
  scale.fillMode = KCAFillModeForwards

  view.layer.addAnimation(scale, forKey:nil)
end