zoom - Man Page

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(6x)

Author

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

Info

6.08-2.fc40 (27-Jan-2024) X Version 11 XScreenSaver manual