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] [--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(6)

COPYRIGHT

Copyright (C) 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.


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