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Length: 17413 (0x4405)
Types: TextFile
Names: »README.VMS«
└─⟦52210d11f⟧ Bits:30007239 EUUGD2: TeX 3 1992-12
└─⟦af5ba6c8e⟧ »unix3.0/DVIWARE.tar.Z«
└─⟦ca79c7339⟧
└─⟦this⟧ »DVIware/crt-viewers/X/xdvi/README.VMS«
NAME
----
XDVI - DVI Previewer for VAX VMS systems running the DECWindows software.
SYNOPSIS
--------
XDVI [+[page]] [-s shrink] [-density density] [-p pixels] [-l] [-rv]
[-bw width] [-fg color] [-bg color] [-hl color] [-bd color] [-cr color]
[-margins inches] [-sidemargin inches] [-topmargin inches]
[-paper papertype] [-mgs[n] size] [-altfont font] [-thorough] [-copy]
[-geometry geometry] [-icongeometry geometry] [-iconic]
[-display display] dvi_file
DESCRIPTION
-----------
XDVI is a program which runs under the DECWindows system. It is used to
preview DVI files, such as those produced by TeX and LaTeX.
XDVI has the capability of displaying the file reduced by various (integer)
factors, and also has a "magnifying glass" which allows one to see a small
part of the unshrunk image momentarily.
Before displaying any page or part thereof, XDVI checks to see if the DVI
file has changed since the last time it was displayed. If this is the case,
XDVI will reinitialize itself for the new DVI file. For this reason,
exposing parts of the XDVI window while TeX is running should be avoided.
This feature allows you to preview many versions of the same file while
running XDVI only once.
OPTIONS
-------
In addition to specifying the .DVI file (with or without the .DVI), XDVI
supports the following command line options. If the option begins with a "+"
instead of a "-", the option is restored to its default value. By default,
these options can be set via the resource names given in parentheses in the
description of each option.
+<page> Specifies the first page to show. If + is given
without a number, the last page is assumed; the first
page is the default.
-s <shrink> (.shrinkFactor) Defines the initial shrink factor.
The default value is 3.
-density <density> (.densityPercent) Determines the density used when
shrinking bitmaps for fonts. A higher value produces a
lighter font. The default value is 40.
-p <pixels> (.pixelsPerInch) Defines the size of the fonts to use,
in pixels per inch. The default value is 300.
-l (.listFonts) Causes the names of the fonts used to be
listed.
-rv (.reverseVideo) Causes the page to be displayed with
white characters on a black background, instead of vice
versa.
-bw <width> (.borderWidth) Specifies the width of the border of
the window.
-borderwidth <width> Same as -bw.
-fg <color> (.foreground) Determines the color of the text
(foreground).
-foreground <color> Same as -fg.
-bg <color> (.background) Determines the color of the background.
-background <color> Same as -bg.
-hl <color> (.highlight) Determines the color of the page border.
The default is the foreground color.
-bd <color> (.borderColor) Determines the color of the window
border.
-bordercolor <color> Same as -bd.
-cr <color> (.cursorColor) Determines the color of the cursor.
The default is the color of the page border.
-margins <inches> (.margins) Specifies the size of both the top and side
margins. This can be a decimal number, e.g., 1.5.
XDVI determines the "home" position of the page within
the window as follows. If the entire page fits in the
window, then the margin settings are ignored. If, even
after removing the margins from the left, right, top,
and bottom, the page still cannot fit in the window,
then the page is put in the window such that the top
and left margins are hidden, and presumably the upper
left-hand corner of the text on the page will be in the
upper left-hand corner of the window. Otherwise, the
text is centered in the window. See also `M' under the
KEYSTROKES section.
-sidemargin <inches> (.sideMargin) Specifies the side margin (see above).
-topmargin <inches> (.topMargin) Specifies the top and bottom margins (see
above).
-paper <papertype> (.paper) Specifies the size of the printed page. This
may be of the form WxH (or WxHcm), where W is the width
in inches (or cm) and H is the height in inches (or
cm), respectively. There are also synonyms which may
be used: us (8.5x11), usr (11x8.5), legal (8.5x14),
foolscap (13.5x17), as well as the ISO sizes a1-a7,
b1-b7, c1-c7, a1r-a7r (a1-a7 rotated), etc. The
default size is 8.5 x 11 inches.
-mgs[n] <size> (.magnifierSize[n]) Specifies the size of the window
to be used for the "magnifying glass" for Button n.
See the MOUSE ACTIONS section. Defaults are 200, 350,
600, 900, and 1200.
-mgs <size> Same as -mgs1.
-altfont <font> (.altFont) Declares a default font to use when the
font in the DVI file cannot be found. This is useful,
for example, with PostScript fonts.
-thorough (.thorough) XDVI will usually try to ensure that
overstrike characters (e.g., \notin) are printed
correctly. On monochrome displays, this is always
possible with one logical operation, either AND or OR.
On color displays, however, this may take two
operations, one to set the appropriate bits and one to
clear other bits. If this is the case, then by default
XDVI will instead use the copy operation, which does
not handle overstriking correctly. The "thorough"
option chooses the slower but more correct choice. See
also -copy, below.
-copy (.copy) Always use the copy operation when writing
characters to the display. This option may be
necessary for correct operation on a color display, but
overstrike characters will be incorrect.
-geometry <geometry> (*geometry) Specifies the initial geometry of the
window.
-icongeometry <geometry> (.iconGeometry) Specifies the initial position for
the icon.
-iconic (.iconic) Causes the XDVI window to start in the
iconic state. The default is to start with the window
open.
-display <display> Specifies the host, display, and screen to be used for
displaying the DVI file. The display must be specified
in the form node::display.screen. The default is
obtained from the logical name "DECW$DISPLAY", which
may be defined using the SET DISPLAY command.
KEYSTROKES
----------
XDVI recognizes the following keystrokes when typed in its window. Each may
optionally be preceded by a (positive or negative) number, whose
interpretation will depend on the particular keystroke. Note that the
keystrokes are case sensitive.
q Quits the program. Control-C and control-D will do this, too.
n Moves to the next page (or to the nth next page if a number is given).
Synonyms are `f', Space, Return, and Line Feed.
p Moves to the previous page (or back n pages). Synonyms are `b',
control-H, and Delete.
g Moves to the page with the given number. Initially, the first page is
assumed to be page number 1, but this can be changed with the `P'
keystroke, below. If no page number is given, then it goes to the last
page.
P "This is page number n." This can be used to make the `g' keystroke
refer to actual page numbers instead of absolute page numbers.
Control-L Redisplays the current page.
^ Move to the "home" position of the page. This is normally the upper
left-hand corner of the page, depending on the margins as described in
the -margins option, above.
u Moves up two thirds of a window-full.
d Moves down two thirds of a window-full.
l Moves left two thirds of a window-full.
r Moves right two thirds of a window-full.
c Moves the page so that the point currently beneath the cursor is moved
to the middle of the window. It also (gasp!) warps the cursor to the
same place.
M Sets the margins so that the point currently under the cursor is the
upper left-hand corner of the text in the page. Note that this command
itself does not move the image at all. For details on how the margins
are used, see the -margins option.
s Changes the shrink factor to the given number. If no number is given,
the smallest factor that makes the entire page fit in the window will be
used. (Margins are ignored in this computation.)
S Sets the density factor to be used when shrinking bitmaps. This should
be a number between 0 and 100; higher numbers produce lighter
characters.
R Forces the DVI file to be reread. This allows you to preview many
versions of the same file while running XDVI only once.
k Normally when XDVI switches pages it moves to the home position as well.
The `k' keystroke toggles a `keep-position' flag which, when set, will
keep the same position when moving between pages. Also `0k' and `1k'
clear and set this flag, respectively.
MOUSE ACTIONS
-------------
If the shrink factor is set to any number other than one, then clicking any
mouse button will pop up a "magnifying glass" which shows the unshrunk image
in the vicinity of the mouse click. This subwindow disappears when the mouse
button is released. Different mouse buttons produce different sized windows,
as indicated by the -mgs option. Moving the cursor while holding the button
down will move the magnifying glass.
Also, the scrollbars (if present) behave in the standard X Window way:
pushing Button 2 in a scrollbar moves the top or left edge of the scrollbar
to that point and optionally drags it; pushing Button 1 moves the image up
or right by an amount equal to the distance from the button press to the
upper left-hand corner of the window; pushing Button 3 moves the image down
or left by the same amount. Note that this is different than the way
DECWindows normally defines the actions of the mouse buttons in scrollbars.
LOGICAL NAMES
-------------
Unless the -display option is used on the command line, XDVI uses the logical
name "DECW$DISPLAY" to specify which bit map display terminal to use. This
logical name may be defined with the SET DISPLAY command.
The logical name "XDVIFONTS" determines the directory path(s) searched for
fonts in the following manner. The string consists of one or more strings
separated by slashes. In each such string, the substring "%f" is changed to
the font name; "%d" is changed to the magnification; and "%p" is changed to
the font family ("gf", "pk", or "pxl"). If no "%f" appears in the string,
then the string ":%f.%d%p" is added on the end. For example, if the string
is "TEX$DISK:[TEX.FONTS.%d]%f.%p" and the font is cmr10 at 300 dpi, then XDVI
looks for TEX$DISK:[TEX.FONTS.300]CMR10.GF, TEX$DISK:[TEX.FONTS.300]CMR10.PK,
and TEX$DISK:[TEX.FONTS.1500]CMR10.PXL, in that order. If the first
character of the "XDVIFONTS" logical name is a slash, then the system default
directories are tried first. If the font is not found in the desired size,
then XDVI will try to find the nearest size. If the font cannot be found at
all, then XDVI will try to vary the point size of the font (within a certain
range), and if this fails, then it will use the font specified as the
alternate font (cf. -altfont).
The logical name "XDVISIZES" must be set to indicate which sizes of fonts are
available. It should consists of a list of numbers separated by slashes. If
the list begins with a slash, the system default sizes are used, as well.
Sizes are expressed in dots per inch; decimals may be used for "pxl" files:
for example, a 300 dots per inch file magnified by half a step comes out to
1643 dots per five inches, which should be encoded as 328.6. The current
default set of sizes is 300/328.6/360/432/518.4/622/746.4.
FILES
-----
TEX$FONTS System default directory for font pixel files.
RESOURCE NAMES
--------------
All of the command line options may be set via the resource names given in
parentheses in the descriptions of the options. This may be used to define a
specific set of options as the default each time you run XDVI. To make use
of this feature, create a file named DECW$XDEFAULTS.DAT in the same directory
as the rest of your DECW*.DAT files. Include in this file the resource names
and arguments of each of the options you wish to specify. For example:
XDvi.copy: off
XDvi.thorough: on
XDvi.shrinkFactor: 2
XDvi.margins: 0.95
XDvi*geometry: 1015x750+3+25
When XDVI is invoked, it would behave as if it had been invoked with the
following command:
XDVI +copy -thorough -s 2 -margins 0.95 -geometry 1015x750+3+25 dvifile
Specifying options on the command line will override any options specified
via resource names in the DECW$XDEFAULTS.DAT file.
INSTALLATION
------------
The installation of XDVI on a VMS system is relatively easy. If you have a
source-only distribution, you will need to have access to the VAX C compiler
to build an executable image. The following steps should get you started:
1) Gather all of the distribution files into one directory, and then create
the executable image by executing the MAKE_VMS.COM file:
$ @MAKE_VMS
2) Create a help file for XDVI using the supplied XDVI.RNH file:
$ RUNOFF XDVI.RNH
3) Insert the resulting XDVI.HLP file into one of your local help libraries:
$ LIBRARY /INSERT HELPLIB.HLB XDVI.HLP
4) Modify the command file you use to set up the TEX commands so that it
defines the foreign symbol XDVI, and the logical names XDVIFONTS and
XDVISIZES. For more information on the expected contents of the logical
names, see the LOGICAL NAMES section of this document. The following
lines are what I use locally:
$ PROC = F$ENVIRONMENT ("PROCEDURE")
$ TEXDIR = F$PARSE (PROC, , , "DEVICE", "NO_CONCEAL") + -
F$PARSE (PROC, , , "DIRECTORY", "NO_CONCEAL")
$ TEXDIR = TEXDIR - "][" - "][" - "][" - "]"
$ TEXDISK = TEXDIR + ".]"
$ PIXELS = TEXDIR + ".GF.CANON300.]"
$ LPIXELS = TEXDIR + ".LOCAL.PIXELS.CANON300.]"
$!
$! Define the virtual disk devices.
$!
$ DEFINE /PROCESS /TRANSLATE = (CONCEAL, TERMINAL) PIXELS$ 'PIXELS'
$ DEFINE /PROCESS /TRANSLATE = (CONCEAL, TERMINAL) LPIXELS$ 'LPIXELS'
$!
$! Define the directories for TeX and its related TeXware.
$!
$ DEFINE TEX$ TEX$DISK:[LOCAL.PROGRAMS]
$ DEFINE TEX$PIXELS PIXELS$, LPIXELS$
$!
$! Define the information necessary to run XDVI.
$!
$ XDVI :== "$TEX$:XDVI"
$ DEFINE XDVIFONTS "TEX$PIXELS:[DPI%d]%f.%p"
$ DEFINE XDVISIZES -
"300/328.6/360/432/518.4/600/622/746.4/895.8/1075/1200/1290/1548"
$ EXIT
5) If you wish, you may create a DECW$XDEFAULTS.DAT file that specifies a
default set of command line options. See the RESOURCE NAMES section for
more information and an example of what I use locally.
If you have any comments about XDVI, or find any bugs in the program, please
contact me at the address below. Enjoy!
Scott Allendorf
Department of Physics and Astronomy
The University of Iowa
Iowa City, IA 52242
Phone: (319) 335-1960
Email: allendorf@iowasp.physics.uiowa.edu
AUTHORS
-------
Eric Cooper, CMU, did a version for direct output to a QVSS.
Modified for X by Bob Scheifler, MIT Laboratory for Computer Science.
Modified for X11 by Mark Eichin, MIT SIPB.
Modified for DECWindows by Scott Allendorf, University of Iowa.
Additional enhancements by many others.