zoom man page

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)

Author

James Macnicol <james.macnicol@mailexcite.com>, 20-Nov-2000. Much code was shamelessly stolen from the spotlight hack and a few others.

Info

5.36-3.fc26 (21-Oct-2016) X Version 11 XScreenSaver manual