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zoom.1
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.\" @(#)$Mu: zoom/zoom.man 1.6 1998/03/27 06:27:30 $
.TH ZOOM 1 "Feb 1998"
.\"----------------------------------------------------------------------------
.SH NAME
zoom \- a simple screen zoomer.
.\"----------------------------------------------------------------------------
.SH SYNOPSIS
.B zoom
.RI [ "-H" ]
.RI [ "-x ulx" ]
.RI [ "-y uly" ]
.RI [ "-w width" ]
.RI [ "-h height" ]
.RI [ "-m mag" ]
.RI [ "-d display" ]
.RI [ "-t timeout" ]
.RI [ "-n" ]
.\"----------------------------------------------------------------------------
.SH DESCRIPTION
\fBzoom\fR is a very simple screen magnifyer for \fBX\fR. All display
depths are supported and the X Shared Memory extension is used, when possible,
for better performance. If your server doesn't support XShm (an X-terminal
or AIX 3 perhaps) or you're running over a network (where XShm just doesn't
apply), don't worry, everything will work just fine.
.\"----------------------------------------------------------------------------
.SH OPTIONS
.TP
.I -H
Show a short usage message and exit.
.TP
.IR "-x ulx" ", " "-y uly"
Specify the initial upper left corner of the source region.
.TP
.I "-w width"
Specify the initial source width.
.TP
.I "-h height"
Specify the initial source height.
.TP
.I "-m mag"
Specify the initial magnification. The default is 2.
.TP
.I "-d display"
Specify the display to use.
.TP
.I -n
Don't try to use the shared memory extension. By default, the X shared
memory extension will be used if it is available and it will work (XShm does
not work across the network for obvious reasons).
.TP
.I "-t timeout"
Specify the titlebar timeout. Various things in \fBzoom\fR use the titlebar
for displaying status message, the \fItimeout\fR is the number of seconds
before the titlebar will revert to its normal state.
.\"----------------------------------------------------------------------------
.SH COMMANDS
The following keyboard/mouse commands are available when \fBzoom\fR is running:
.TP
.B "+/-"
Increase/decrease the zoom factor.
.TP
.B d
Cycle through the (compiled-in) list of delays; the title bar will show
the new display for a couple seconds and then revert to normal.
.TP
.B q
Quit.
.TP
.B "</>"
Decrease/increase the keyboard scroll step by a factor of two; the title
bar will show the new step for a couple seconds and then revert to normal.
.TP
.B "arrow keys"
The arrow keys will move the source region around in the obvious manner.
.TP
.B mouse
Dragging with mouse button one down will choose a new source region; you have
to start in the \fBzoom\fR window. Mouse button two will display the color
of the pixel under the cursor as a hex RGB value, the value will appear in
the zoom window's titlebar.
.\"----------------------------------------------------------------------------
.SH "SEE ALSO"
.BR xzoom "(1), "
.BR xmag "(1)."
.\"----------------------------------------------------------------------------
.SH BUGS
Bug reports should be sent to Eric A. Howe ([email protected]).
.\"----------------------------------------------------------------------------
.SH AUTHORS
This program started out as a hack on xzoom by Itai Nahshon <[email protected]>
but it has been hack beyond recognition by Mathew Francey and Eric Howe.
Consider this a complete rewrite.