匹配两个Rect的共同部分输出到out，若无共同部分则输出0，0，0，0

@param savedInstanceState if savedInstanceState != null we don`t have to perform the transition animation

在PhotoView内部还没有图片的时候同样可以调用该方法 <p></p> 此时并不会播放动画，当给PhotoView设置图片后会自动播放动画。 <p></p> 若等待时间过长也没有给控件设置图片，则会忽略该动画，若要再次播放动画则需要重新调用该方法 (等待的时间默认500毫秒，可以通过setMax

Method to call when the progress reaches a value in order to avoid float precision issues, the progress is rounded to a float with two decimals. In i

get a thumbnail image url from original url @param imgUrl original image url @param width width u need @param height height u need @return the numbe

Set the properties of the paints we're using to draw the progress wheel

Set the properties of the paints we're using to draw the progress wheel

add root view of this layout @param background @return

Parse the attributes passed to the view from the XML

Parse the attributes passed to the view from the XML

The exit animation is basically a reverse of the enter animation, except that if the orientation has changed we simply scale the picture back into the

Set the bounds of the component

Set the bounds of the component

Puts the view on spin mode

Puts the view on spin mode

add target view @param toView @return

The constructor for the ProgressWheel @param context @param attrs

The constructor for the ProgressWheel @param context @param attrs