Article View: comp.windows.x
Article #37699Re: Use of backing store to prevent exposures
From: Richard Ottolini
Date: Mon, 05 Mar 1990 23:40
Date: Mon, 05 Mar 1990 23:40
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1343 bytes
In article <188@trwacs.UUCP> epstein@trwacs.UUCP (Jeremy Epstein) writes: >(2) Store the sequence of X protocol requests associated with the > window and replay it as needed. > Advantage: Minimal work required to store and replay the requests. > Disadvantage: Unless you understand exactly what every request does > and what it affects on the screen, you may have to replay > all events since the beginning of time, which would clearly > be slow! Represent images at a higher level of abstraction than bitmaps or drawing commands, preferably in terms of what things you are drawing. Then you only need to redraw the currently active set of objects. MacDraw is an early and widespread example of this philosophy. The Unidraw toolkit in X Windows InterViews is good starting point.
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!decwrl!shelby!med!hanauma!rickReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!ucbvax!decwrl!shelby!med!hanauma!rick From: rick@hanauma.stanford.edu (Richard Ottolini) Newsgroups: comp.windows.x Subject: Re: Use of backing store to prevent exposures Keywords: new server architecture Message-ID: <593@med.Stanford.EDU> Date: 5 Mar 90 23:40:33 GMT References: <188@trwacs.UUCP> Sender: news@med.stanford.edu (USENET News System) Reply-To: rick@hanauma.UUCP (Richard Ottolini) Organization: Stanford University, Dept. of Geophysics Lines: 14