title: Android - Position image inside EditText
body: <p>I have a multiline textbox (EditText) for the user to enter a text. I need to limit the height of the text. User can also change the text size. So I need to draw a line in the textbox so the user know how much he can write. The line should be an image and positioned relatively in the textbox.</p>
  
  <p>I think I know I need to extend the EditText in some way but I don't have a clue how to do it or if it's the right way...</p>