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zoom(6)			      XScreenSaver manual		       zoom(6)

NAME
       zoom - wander around magnified desktop

SYNOPSIS
       zoom [--display host:display.screen] [--foreground color] [--background
       color]  [--window]  [--root]  [--window-id  number][--mono] [--install]
       [--visual  visual]  [--delay  usecs]   [--duration   secs]   [--lenses]
       [--pixwidth  pixels]  [--pixheight pixels] [--pixspacex pixels] [--pix-
       spacey pixels] [--lensoffsetx pixels] [--lensoffsety pixels] [--fps]

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-settings(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.

       --window-id number
	       Draw on the specified 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.

       --duration seconds
	       How  long  to run before	loading	a new image.  Default 120 sec-
	       onds.

       --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  consecutive	copied regions
	       (only effective when -lenses used).

       --lensoffsety pixels
	       Distance	in Y  direction	 between  consecutive  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.

       XSCREENSAVER_WINDOW
	       The window ID to	use with --root.

SEE ALSO
       X(1),  xscreensaver(1),	xscreensaver-settings(1),  xscreensaver-getim-
       age(6)

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.macnicol@mailexcite.com>, 20-Nov-2000.  Much code
       was shamelessly stolen from the spotlight hack and a few	others.

X Version 11		      6.09 (07-Jun-2024)		       zoom(6)

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