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 pix_ els] [-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, 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.
- -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 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_MAN
AGER property.
SEE ALSO
X(1), xscreensaver(1), xscreensaver-demo(1), xscreen
saver-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.