wkhtmltopdf javascript delay for output of google maps

Question

I am working with WKTHMTOPDF and really enjoying it. However, the page that is being converted has google maps and the resulting PDF comes out with the map half loaded. I know there was an option to add --javascript--delay in previous versions, but it would appear it is deprecated. I am using version 0.99. Is there a different option?

Answer 1

There is another a better way to do this that does not require using --javascript--delay (and has the advantage of not requiring you to set a delay time before you know what the required delay will actually be).

Add a callback to the 'tileloaded' event:

google.maps.event.addListenerOnce(map, 'tilesloaded', function(){
   window.status = 'ready_to_print';
});

Then call wkhtmltopdf with the --window.status option set to 'ready_to_print' e.g.

wkhtmltopdf --window-status ready_to_print map.html map.pdf

obviously you can change the string 'ready_to_print' to be whatever you want so long as window.status does not already equal that value when wkhtmltopdf is called and before the above code fires.

A similar approach can be used with google charts, though the appropriate event goes by a different name.