zoom - wander around magified desktop
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]
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.
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 a private colormap for the window.
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.
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.
Width of the magnified pixels.
Height of the magnified pixels.
Amount of black space between magnified pixels (X direction).
Amount of black space between magnified pixels (Y direction).
Distance in X direction between consective copied regions (only effective when
Distance in Y direction between consective copied regions (only effective when
DISPLAY to get the default host and display number.
to get the name of a resource file that overrides the global resources stored in
the RESOURCE_MANAGER property.
X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1)
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.
James Macnicol <email@example.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)