Gnome 2.22 Released
kie writes "The latest version of the Gnome Desktop is being released today.
New features in 2.22 include Cheese (an application for webcam photos and videos),
window compositing, PolicyKit integration and much more.
The full details are in the Release Notes."
Nevermind - Drop shadows and transparency, for now.
BTW, does Gnome now allows switching the spelling language of an application during the use of it?
Like switching the spell checker of a chat session during the chat session? Or the assumption is still that everybody only ever uses one language at a time.
Seriously. I'm not flaming, I mean to ask the question. One of the reasons I stopped using Gnome, after many years using it, was that in order to use a Dutch spell checker in Gaim, I had to restart Gaim using a dutch locale environment (and be stuck with a Dutch spell checker for the rest of that Gaim instance).
GNOME (Or more accurately GTK+, glib, Cairo and X) has got faster steadily since the GNOME 2.12 days. GTK+s UI's are just as snappy for me as Qt equivalents. I noticed significant improvements after several video/X driver updates and updates to Cairo 1.4.x (from 1.2.x).
the traditional way to do a windowed gui was to limit each apps drawing area so that it could only draw within it's own window and force the app to redraw stuff when it's visibility changed. This system has the advantage of being light on ram and being low on CPU when windows aren't moving. However moving windows is a relatively expensive process both because of the need to ask apps to redraw and the need to actually move data arround in the screen buffer (this is why many older systems use a dotted box drawn with XOR to indicate window moving and only move the window when the user has chosen the final location). Also it is virtually impossible to support any kind of partial transparency or rotozooming under this system and even non rectangular windows are a pain.
3D games work in a totally different way. They work with a (large) set of textures and the scene is redrawn every frame building up from the back to the front and rotozooming everything into place. This makes transparency, drop shadows etc fairly easy and of course rotozooming is a fundamental requirement of a 3D game.
A compositing window system (afaict under X this requires support from both X itself and the window manager) draws each window into it's own buffer and then treats that as a texture. Then a frame for the screen is built up in much the same way a 3D game builds up a frame. This enables all sorts of effects from simple stuff like drop shadows and inverted colors to advanced stuff like a window selector that shows a thumbnail of each window or a desktop selector that puts the different desktops on the surface of a cube. Different window managers will obviously choose to use theese capabilities to different extents and in different ways.
note: i'm known as plugwash most places but i screwd up registering that here somehow in the past and now can't register