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_MANAGER property.
