1 .TH XScreenSaver 1 "20-Nov-2000" "X Version 11"
3 zoom - wander around magified desktop
6 [\-display \fIhost:display.screen\fP] [\-foreground \fIcolor\fP]
7 [\-background \fIcolor\fP] [\-window] [\-root] [\-mono] [\-install]
8 [\-visual \fIvisual\fP] [\-delay \fIusecs\fP] [\-lenses]
9 [\-pixwidth \fIpixels\fP] [\-pixheight \fIpixels\fP]
10 [\-pixspacex \fIpixels\fP] [\-pixspacey \fIpixels\fP]
11 [\-lensoffsetx \fIpixels\fP] [\-lensoffsety \fIpixels\fP]
13 The \fIzoom\fP program takes an image, magnifies it, and scrolls around
16 The image that it manipulates will be grabbed from the portion of
17 the screen underlying the window, or from the system's video input,
18 or from a random file on disk, as indicated by
19 the \fIgrabDesktopImages\fP, \fIgrabVideoFrames\fP,
20 and \fIchooseRandomImages\fP options in the \fI~/.xscreensaver\fP
22 .BR xscreensaver-demo (1)
26 accepts the following options:
29 Draw on a newly-created window. This is the default.
32 Draw on the root window.
35 If on a color display, pretend we're on a monochrome display.
38 Install a private colormap for the window.
40 .B \-visual \fIvisual\fP
41 Specify which visual to use. Legal values are the name of a visual class,
42 or the id number (decimal or hex) of a specific visual.
44 .B \-delay \fImicroseconds\fP
48 Instead of doing magnification we just copy an offset region from the original
49 image. If lensoffsetx < pixwidth (and similarly for Y) then consecutive
50 regions will overlap, giving the effect of looking through an array of
53 .B \-pixwidth \fIpixels\fP
54 Width of the magnified pixels.
56 .B \-pixheight \fIpixels\fP
57 Height of the magnified pixels.
59 .B \-pixspacex \fIpixels\fP
60 Amount of black space between magnified pixels (X direction).
62 .B \-pixspacey \fIpixels\fP
63 Amount of black space between magnified pixels (Y direction).
65 .B \-lensoffsetx \fIpixels\fP
66 Distance in X direction between consective copied regions (only effective
71 .B \-lensoffsety \fIpixels\fP
72 Distance in Y direction between consective copied regions (only effective
81 to get the default host and display number.
84 to get the name of a resource file that overrides the global resources
85 stored in the RESOURCE_MANAGER property.
89 .BR xscreensaver\-demo (1),
90 .BR xscreensaver\-getimage (1)
92 Copyright \(co 2000 by James Macnicol. Permission to use, copy, modify,
93 distribute, and sell this software and its documentation for any purpose is
94 hereby granted without fee, provided that the above copyright notice appear
95 in all copies and that both that copyright notice and this permission notice
96 appear in supporting documentation. No representations are made about the
97 suitability of this software for any purpose. It is provided "as is" without
98 express or implied warranty.
100 James Macnicol <james.macnicol@mailexcite.com>, 20-Nov-2000. Much code was
101 shamelessly stolen from the
103 hack and a few others.