zoom



XScreenSaver(1)                                                XScreenSaver(1)




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 © 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                      20-Nov-2000                  XScreenSaver(1)

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