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] [--pixspacey 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,
       grabVideoFrames, 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 seconds.

       --lenses
               Instead of doing magnification we just copy  an  offset  region  from  the  original  image.   If
               lensoffsetx  <  pixwidth  (and similarly 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-getimage(6x)

COPYRIGHT

       Copyright  © 2000 by James Macnicol.  Permission to use, copy, modify, distribute, and sell this software
       and its documentation for any purpose 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 representations are made about the suitability of  this  software  for  any
       purpose.  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.