_ResizingBoxState

();

class

_ResizingBoxState

extends

State

_ResizingBox

with

SingleTickerProviderStateMixin

Animation

animation

@override

void

initState

()

super

initState

();

animation

AnimationController

vsync:

this

duration:

const

Duration

minutes:

),

forward

()

addListener

(()

setState

(()

{});

});

@override