The
gxditview
program displays the
groff intermediateoutput,
see
groff_out(5),
on an X~display.
It uses the standard X11 fonts, so it does not require access to the
server machine for font loading.
There are several ways to use
gxditview.
The
groff intermediate output
can be generated by
groff~-Z.
This can be viewed by explicity calling
gxditviewfilename.
If
filename
is
-,
gxditview
will read the standard input;
filename
cannot be omitted.
The
groff intermediate output
is different for all devices.
gxditview
can view it for all devices, but the quality is device dependent.
The best results are achieved with the
X*
devices for
groff's
option
-T.
There are four
X*
devices:
-TX75,
-TX75-12,
-TX100,
-TX100-12.
They differ by the X~resolution (75dpi or 100dpi) and the used base font
size (10pt or 12pt).
They are especially built for
gxditview.
When using one of them
groff
generates the
intermediate output
for this device and calls
gxditview
automatically for viewing.
For example, to view this man page with a base resolution of 12pt, say
groff -TX100-12 -man -rS12 gxditview.1
(option
-rSXX
is documented in the
groff_man(7)
man page).
groff's
option
-X
produces
intermediate output
for the
Postscript
device and subsequently uses
gxditview
as a viewer for it.
The quality of the result depends mainly on the chosen point size and
display resolution; for rapid previewing, however, something like
groff -X -P-resolution -P100 document
yields acceptable results.
During the run of
gxditview,
the left mouse button brings up a menu with the following entries:
Next Page
Display the next page.
Previous Page
Display the previous page.
Select Page
Select a particular numbered page specified by a dialog box.
Print
Print the
groff intermediate output
using a command specified by a dialog box.
The default command initially displayed is controlled by the
printCommand
application resource, and by the
-printCommand
option.
Open
Open for display a new file specified by a dialog box.
The file should contain some
groff intermediateoutput.
If the filename starts with
|
it will be taken to be a command to read from.
Quit
Exit from
gxditview.
The
n,
Space,
Return,
and
Next
(PgDn)
keys are bound to the
Next Page
action.
The
p,
b,
BackSpace,
Delete,
and
Prior
(PgUp)
keys are bound to the
Previous Page
action.
The
g
key is bound to the
SelectPage
action.
The
o
key is bound to the
OpenFile
action.
The
q
key is bound to the
Quit
action.
The
r
key is bound to the
Rerasterize
action which rereads the current file, and redisplays the current
page; if the current file is a command, the command will be
reexecuted.
Vertical scrolling can be done with the
k
and
j
keys;
horizontal scrolling is bound to the
h
and
l
keys.
The arrow keys
(up,
down,
left,
and
right)
are also bound to the obvious scrolling actions.
The
paperlength
and
paperwidth
commands in the DESC file specify the length and width in machine units
of the virtual page displayed by
gxditview.
OPTIONS
The
gxditview
program accepts all of the standard X~Toolkit command line options
along with the additional options listed below:
-help
This option indicates that a brief summary of the allowed options should be
printed.
-page
This option specifies the page number of the document to be displayed.
-backingStore backing-store-type
Redisplay of the
groff intermediate output
window can take up to a second or so, this option causes the server to
save the window contents so that when it is scrolled around the
viewport, the window is painted from contents saved in backing store.
backing-store-type
can be one of
Always,
WhenMapped
or
NotUseful.
-printCommand command
The default command displayed in the dialog box for the
Print
menu entry will be
command.
-resolution res
The
groff intermediate output
file will be displayed at a resolution of
res
dpi, unless the DESC file contains the
X11
command, in which case the device resolution will be used.
This corresponds to the
Dvi
widget's
resolution
resource.
The default is 75.
-filename string
The default filename displayed in the dialog box for the
Open
menu entry will be
string.
This can be either a filename, or a command starting with
|.
The following standard X~Toolkit command line arguments are commonly used
with
gxditview:
-bg color
This option specifies the color to use for the background of the window.
The default is white.
-bd color
This option specifies the color to use for the border of the window.
The default is black.
-bw number
This option specifies the width in pixels of the border surrounding the
window.
-fg color
This option specifies the color to use for displaying text.
The default is
black.
-fn font
This option specifies the font to be used for displaying widget text.
The default is fixed.
-rv
This option indicates that reverse video should be simulated by swapping
the foreground and background colors.
-geometry geometry
This option specifies the preferred size and position of the window.
-display host:display
This option specifies the X~server to contact.
-xrm resourcestring
This option specifies a resource string to be used.
X DEFAULTS
This program uses the
Dvi
widget in the X~Toolkit.
It understands all of the core resource names and classes as well as:
width (class Width)
Specifies the width of the window.
height (class Height)
Specifies the height of the window.
foreground (class Foreground)
Specifies the default foreground color.
font (class Font)
Specifies the font to be used for error messages.
fontMap (class FontMap)
Specifies the mapping from
groff
font names to X~font names.
This must be a string containing a sequence of lines.
Each line contains two whitespace separated fields: first the
groff
font name, and secondly the X~font name.
The default is
"\
TR -adobe-times-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
TI -adobe-times-medium-i-normal--*-100-*-*-*-*-iso8859-1\n\
TB -adobe-times-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
TBI -adobe-times-bold-i-normal--*-100-*-*-*-*-iso8859-1\n\
CR -adobe-courier-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
CI -adobe-courier-medium-o-normal--*-100-*-*-*-*-iso8859-1\n\
CB -adobe-courier-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
CBI -adobe-courier-bold-o-normal--*-100-*-*-*-*-iso8859-1\n\
HR -adobe-helvetica-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
HI -adobe-helvetica-medium-o-normal--*-100-*-*-*-*-iso8859-1\n\
HB -adobe-helvetica-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
HBI -adobe-helvetica-bold-o-normal--*-100-*-*-*-*-iso8859-1\n\
NR -adobe-new century schoolbook-medium-r-normal--*-100-*-*-*-*-iso8859-1\n\
NI -adobe-new century schoolbook-medium-i-normal--*-100-*-*-*-*-iso8859-1\n\
NB -adobe-new century schoolbook-bold-r-normal--*-100-*-*-*-*-iso8859-1\n\
NBI -adobe-new century schoolbook-bold-i-normal--*-100-*-*-*-*-iso8859-1\n\
S -adobe-symbol-medium-r-normal--*-100-*-*-*-*-adobe-fontspecific\n\
SS -adobe-symbol-medium-r-normal--*-100-*-*-*-*-adobe-fontspecific\n\
"
ENVIRONMENT
GROFF_FONT_PATH
A list of directories in which to search for the
devname
directory in addition to the default ones.
See
troff(1)
and
groff_font(5)
for more details.
FILES
/etc/X11/app-defaults/GXditview
/etc/X11/app-defaults/GXditview-color
The default resource files of
gxditview.
Users should override these values in the
.Xdefaults
file, normally located in the user's home directory.
See
xrdb(1)
and
appres(1)
for more.
This program is derived from
xditview;
portions of
xditview
originated in
xtroff
which was derived from
suntroff.
COPYRIGHT
Copyright 1989, Massachusetts Institute of Technology.
See
X(7)
for a full statement of rights and permissions.
AUTHORS
Keith Packard (MIT X Consortium)
Richard L. Hyde (Purdue)
David Slattengren (Berkeley)
Malcolm Slaney (Schlumberger Palo Alto Research)
Mark Moraes (University of Toronto)
James Clark