title: How to get screen cordinates corresponding to the whole screen, and not the View touched?
body: <p>Im having some trouble obtaining the real (x,y) from my screen by handling the touch events of one View Item.</p>
  
  <p>I have this:</p>
  
  <p><img src="https://i.stack.imgur.com/xqREn.png" alt="enter image description here"></p>
  
  <p>When I touch the View item, it gives me coordinates with the origin located in his upper-left corner, and if i slide the finger out the view, it gives me negative coordinates (when sliding up or left). 
  <img src="https://i.stack.imgur.com/96T3X.png" alt="enter image description here">
  <img src="https://i.stack.imgur.com/RXmd8.png" alt="enter image description here"></p>
  
  <p>I would like to obtain the View location in the screen, to add it to the (x,y) coordinates that i get, so the final result is that the (0,0) is in the upper-left corner of the whole screen.
  <img src="https://i.stack.imgur.com/cpie6.png" alt="enter image description here"></p>
  
  <p>I also need the total screen size, so that i know when the finger is located in the lower-right corner.</p>
  
  <p>How can I achieve this?</p>
  
  <p>Thanks.</p>