Re: Screen update and feeling the bits between your toes

• To: SWM@sapsucker.scrc.symbolics.com
• Subject: Re: Screen update and feeling the bits between your toes
• From: Jim Mayer <mayer@wrc.xerox.com>
• Date: Mon, 14 Oct 1991 12:55:28 PDT
• Cc: p2@porter.asl.dialnet.symbolics.com, SWM@sapsucker.scrc.symbolics.com, clim@BBN.COM
• In-Reply-To: <9110141625.AA29553@fliff.wrc.xerox.com>

SWM@sapsucker.scrc.symbolics.com writes:
 > 
 > This is exactly the facility that DRAGGING-OUTPUT is intended to
 > provide, except that it presently uses REPLAY instead of "bitblt" to do
 > the feedback during dragging.  DRAGGING-OUTPUT could be changed to use
 > "bitblt", except that since "bitblt" can paint only rectangular regions,
 > the dragging of non-rectangular objects could damage some things that
 > should not be damaged.
 > 

Just a note... Under window systems like X11 and NeWS, CopyArea
(bitblt) is affected by the current clipping region and can, in fact,
paint non-rectangular areas.

-- Jim Mayer
                                        Phone: (716) 422-9407
Webster Research Center                 Intelnet phone: 8*222-9407
Xerox Corporation                       Internet Email: mayer@wrc.xerox.com
800 Phillips Road, 0128-29E             XNS Email: James L Mayer:Wbst128:xerox
Webster, New York 14580                 Facsimile: x2126

0,,

• Re: Screen update and feeling the bits between your toes
• From: Scott McKay <SWM@sapsucker.scrc.symbolics.com>

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