My application that embeds Gecko grabs the output of a rendered page into a chunk of memory and
displays it elsewhere. In order for this approach to work with pages that have any form of dynamic
content, I need to grab the whole page frequently - I'm currently doing it at 15Hz.
Whilst this works well, it consumes a lot of resources - especially if I have several instances of
the embedded browser open at once.
Does anyone know of a way to tell if an element changes appearance - anything from a link highlight
change to a large portion of the page in something like Google Maps.
Ideally, I'd like to find a way to get a 'dirty rectangle' that told me the area of the page I need
to update, but initially, just a flag saying something had changed would be a big win.
I'm about to start digging but figured I'd ask here first in case anyone had come across the same
problem.
Cheers.
Cal.
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