title: Webdriver. Click on Canvas element by coordinates
body: <p>I have canvas element on my page and i want to click on some part of it.
  I know, that I must use ActionBuilder to do this, so I tryed this code:</p>
  
  <pre><code>element = driver.find_element(:xpath, canvas_xpath)
  action.move_to(element, 100, 100).click.perform
  </code></pre>
  
  <p>But this code only click in center of canvas element and don't move mouse in any way.</p>
  
  <p>Is there any other possible way to move mouse to some coordinates?
  (Don't mention AutoIT scripts - I develop under Linux)</p>