zoom
Section: XScreenSaver manual (6)
Updated: 5.40 (12-Aug-2018)
Page Index
NAME
zoom - wander around magnified desktop
SYNOPSIS
zoom
[-display
host:display.screen] [-foreground
color]
[-background
color] [-window] [-root] [-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-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.
- -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.
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 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.