PLAN:

Make print preview suck less. Basically by showing the preview in a separate window like all sane programs.

1. clone the currently viewed GaleonEmbed? (galeon_embed_copy_page())
2. print preview the new one (galeon_embed_print())
3. add File/Print Preview...
4. add Print in the Print Preview dialog (see below)

OPEN ITEMS:

• should there be a progress dialog in case it takes very long to finish the print preview?
  • during cloning total progress doesn't seem to be available so progress bar is useless, you can only show activity
  • when switching on print preview, feedback might be available via nsIWebProgressListener (or net-state signals, I didn't actually check that)

NOTES:

• you can't print preview until the page has finished loading
• you can't print preview in "net-stop" callback either, it's still too soon
• you can print preview in an idle function after net-stop
• the new GaleonEmbed? should be shown only after galeon_embed_print(), otherwise it will display the HTML rendering of the page for a short while and it's a very noticeably flash
• net-stop isn't signalled if you print preview about:blank (what else? )

• total time from click to finished print preview is somewhere between 300 – 1600 ms (though I observed some 4000 ms peak also)
  • galeon_embed_print() takes a few hundred milliseconds, most of the time is spent waiting

• use busy cursor while waiting
• you can print the original GaleonEmbed? and avoid the silly "can't print while in print preview" error
  • need to make sure the user can't load other URL while in print preview
    • what about autorefreshing pages?
  • or you can just exit Print Preview first