all userdraw objects (points,arrows,segments…etc) including inputfields | drag&drop | onclick stuff, can be read with the next js-code (see directexec module)
<script type="text/javascript">
//<![CDATA[
"use strict";
<!-- will return all 'userdraw' or 'userinput' data from all canvas javascript includes -->
<!-- will return all 'drag&drop' or 'onclick' data from all canvas javascript includes -->
function read_canvas(){
if( typeof popup !== 'undefined' ){
var fun = popup['read_canvas'+canvas_scripts[0]];
return fun();
}
else
{
var script_len = canvas_scripts.length;var draw_reply = "";var found_result = false;for(var p = 0 ; p < script_len ; p++){var fun = eval("read_canvas"+canvas_scripts[p]);if( typeof fun === 'function'){var result = fun();if( result && result.length != 0){if(script_len == 1 ){ return result;};found_result = true;draw_reply = draw_reply + "["+p+"]="+ result + "\n";};};};if( found_result ){return draw_reply;}else{return null;}
};
};
function read_dragdrop(){
if( typeof popup !== 'undefined' ){
var fun = popup['read_dragdrop'+canvas_scripts[0]];
return fun();
}else{
var script_len = canvas_scripts.length;var dragdrop_reply = "";var found_result = false; for(var p = 0 ; p < script_len ; p++){var fun = eval("read_dragdrop"+canvas_scripts[p]); if(typeof fun === 'function'){var result = fun();if( result && result.length != 0 ){if(script_len == 1 ){ return result;};found_result = true;dragdrop_reply = dragdrop_reply + "["+p+"]=" + result +"\n";};};};if( found_result ){return dragdrop_reply;}else{return null;}
};
};
note: as for the real answer checking, the sky is the limit…
Joke
