tips for Opera users

Federico Mena Quintero federico at novell.com
Tue Oct 2 23:48:14 BST 2007


On Tue, 2007-09-18 at 10:57 +0100, Gavin McCullagh wrote:

> I got the patch to apply and work.  I can't say for sure that it will fix
> your issue but it might at least alleviate it.

Thanks for testing the patch, Gavin!

> If I understand correctly, Federico's patch doesn't change the fact that
> firefox has to load all of the images, as pixmaps, into video ram to
> display the page.  I presume all browsers must at some stage load each
> image in that way.  It seems his patch causes the pixmaps to be removed
> after a short period, unless the particular picture is actually on-screen
> at that moment.

All of the above are correct.  However, browsers (or any app) can avoid
creating pixmaps in the X server by using X images instead of pixmaps
(pixmaps are server-side resources, while images are client-side
resources).  It should not be horribly difficult to change Firefox to do
this.

> > > http://www.carteretcountyschools.org/bms/teacherwebs/sdavenport/artgallery6.htm)

Ugh... this page does the mistake of making the browser load some huge
images, but then scaling them to a small size:

  <img src="http://example.com/huge-image.jpg" width="100" height="100">

The solution to that is to make Firefox only store the scaled version of
the image (it still has to download it and uncompress it, but that's
client-side, not X-server-side).  Or the page could be fixed to use
thumbnail images instead of the originals :)

  Federico




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