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XScreenSaver(6x)                                              XScreenSaver(6x)



NAME
       zoom - wander around magified desktop

SYNOPSIS
       zoom  [-display  host:display.screen]  [-foreground color] [-background
       color] [-window] [-root] [-mono] [-install]  [-visual  visual]  [-delay
       usecs]  [-lenses]  [-pixwidth  pixels]  [-pixheight pixels] [-pixspacex
       pixels] [-pixspacey pixels] [-lensoffsetx pixels] [-lensoffsety pixels]

DESCRIPTION
       The zoom program takes an image, magnifies it, and scrolls  around  it,
       fatbits-style.

       The  image  that it manipulates will be grabbed from the portion of the
       screen underlying the window, or from the system's video input, or from
       a random file on disk, as indicated by the grabDesktopImages, grabVide-
       oFrames, and chooseRandomImages options in  the  ~/.xscreensaver  file;
       see xscreensaver-demo(1) for more details.

OPTIONS
       zoom accepts the following options:

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root window.

       -mono   If on a color display, pretend we're on a monochrome display.

       -install
               Install a private colormap for the window.

       -visual visual
               Specify  which  visual  to use.  Legal values are the name of a
               visual class, or the id number (decimal or hex) of  a  specific
               visual.

       -delay microseconds
               Slow it down.

       -lenses Instead  of  doing  magnification we just copy an offset region
               from the original image.  If lensoffsetx < pixwidth (and  simi-
               larly  for Y) then consecutive regions will overlap, giving the
               effect of looking through an array of lenses.

       -pixwidth pixels
               Width of the magnified pixels.

       -pixheight pixels
               Height of the magnified pixels.

       -pixspacex pixels
               Amount of black space between magnified pixels (X direction).

       -pixspacey pixels
               Amount of black space between magnified pixels (Y direction).

       -lensoffsetx pixels
               Distance in X direction between consective copied regions (only
               effective when -lenses used).

       -lensoffsety pixels
               Distance in Y direction between consective copied regions (only
               effective when -lenses used).


       ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
               to get the name of a resource file that  overrides  the  global
               resources stored in the RESOURCE_MANAGER property.

SEE ALSO
       X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)

COPYRIGHT
       Copyright (C) 2000 by James Macnicol.  Permission to use, copy, modify,
       distribute, and sell this software and its documentation for  any  pur-
       pose  is  hereby granted without fee, provided that the above copyright
       notice appear in all copies and that both  that  copyright  notice  and
       this  permission  notice appear in supporting documentation.  No repre-
       sentations are made about the suitability of this software for any pur-
       pose.  It is provided "as is" without express or implied warranty.

AUTHOR
       James Macnicol <james.macnicolATmailexcite.com>, 20-Nov-2000.  Much code
       was shamelessly stolen from the spotlight hack and a few others.




X Version 11                  4.21 (01-Mar-2005)              XScreenSaver(6x)