mascip has asked for the wisdom of the Perl Monks concerning the following question:

Hello,
i'm new here, and quite new to Perl, WWW::Mechanize and WWW::Mechanize::Firefox.
I'm playing moving around in a page with HTML::TreeBuilder. I get references of the elements (HTML::Element) i need, that all ok.

What i need then, is to retrieve the position of an element on my screen. So, how can i build this get_position_of() function : 

my ( $x, $y ) = get_position_of( $my_html_element );

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Thank you :o)
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Re: WWW::Mechanize - how to get the position of an element on my screen?
by Corion (Patriarch) on Jan 31, 2012 at 19:17 UTC
[reply]

      The description seems to fit perfectly my needs, thank you !
      I'll get back to you (after eating) about whether and how it worked.

      PS : Forget my answer to your previous message, then.
      PPS : i feel sorry to not have found that function myself, and thus made you work for me. I searched, though, but with "position" as a keyword. And i looked at the module summary, but not at the "image methods".

[reply]
Re: WWW::Mechanize - how to get the position of an element on my screen?
by Anonymous Monk on Jan 31, 2012 at 19:01 UTC
    http://stackoverflow.com/questions/442404/dynamically-retrieve-html-element-x-y-position-with-javascript
[reply]

      This is a Javascript solution to get the position of an Element, by retrieving it with its ID.
      It doesn't really answer my question, because the element whose position i want has no ID.
      One could say "use getElementsByTagName, then!" .
      It wouldn't do either : i don't want to have to search my element with Javascript tools.

      I have ALREADY found the element i'm interested in with HTML::Tree, and want to get it's position.
      I could do with Javascript tools if there's no Perl module that gets it for me, but then i'd need to tell Javascript who my element is. I don't know how to do this.

      Thanks for very fast answer, though =o)

[reply]

        You don't seem to understand. The "position" of an HTML element only exists if the HTML is actually rendered into a layout. HTML::Tree does not do such rendering.

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