The Full Wiki

More info on Fresco (windowing system)

Fresco (windowing system): Wikis

Advertisements

Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! This article doesn't yet, but we're working on it! See more info or our list of citable articles.

Encyclopedia

From Wikipedia, the free encyclopedia

Fresco
Berlin-windowing-system-screenshot.png
Developer(s) Various
Stable release 0.2 / 4-March-2003
Operating system Unix-like
Type Windowing system
License LGPL2
Website www.fresco.org

In computing, Fresco (formerly known as Berlin) is a windowing system. It was intended as a replacement for the X Window System. As of October 23, 2008, the last activity in the project's CVS repository was dated June 11, 2004. It is free software, licensed under the terms of the GNU Lesser General Public License (LGPL).

Contents

Scope

Fresco tried to use a different approach than most other user interface systems. Its scope was different from for instance the X Window System. In X, Xorg provides graphics and input drivers, drawing primitives (sometimes through extensions), and a network transparent way of using these. Fresco on the other hand aimed to provide the primitives and the network transparency, and in addition to provide the higher level widgets that a GUI toolkit in the X Window System would provide.

Core concepts

A major difference with more traditional systems would have been that higher level widgets existed in a server side scene-graph. This resulted in reduced communication overhead between the application and the display server when manipulating the widgets, because the information needed to re-render the entire scene was there. Keeping the scene on the server also allowed more opportunities to leverage hardware acceleration. OpenGL rendering of everything including the widgets had been implemented, and leveraging more advanced future hardware should have been possible without having to rewrite the client applications.

Everything in the scene-graph was a CORBA Object, and able to be manipulated in a network transparent way. The higher level widgets were built out of lower level primitives in the same way a (remote) client app would. So everything was accessible through a consistent CORBA API.

Fresco tried to be device-independent and resolution-independent. Switching from the OpenGL renderer to the Postscript renderer for printing for instance, should yield identical results.

See also

External links

Advertisements

Advertisements






Got something to say? Make a comment.
Your name
Your email address
Message