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1990-09-09
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DVI2PM
A public domain DVI Previewer for the OS/2 Presentation Manager
written by Christian Monte
email:<zimmermann@iskp.physik.tu-berlin.dbp.de>
DVI2PM is derived from Doug McDonald's DVIVGA for the IBM PC
(see file changes.os2) and provides the same keyboard interface.
Mouse and Scrollbar interface will be made available in the near future.
For now DVI2PM is just a keyboard driven TeX-Previewer. I'm sorry but i
need it now and not tomorrow. So there is many room for improvements.
Someday it should work with fonts rather then bitmaps. Maybe anybody has
an idea who to turn a PK-font in a PM-screen font.
DVI2PM is a TeX screen previewer for OS/2 PM. It expects the name of
the .DVI file on the command line, and the extension .dvi can always
be omitted. If no command line arguments are given, the filename can
be set from the open menu.
This driver is based on a driver family written by
Nelson Beebe of the University of Utah and others.
EQUIPMENT REQUIREMENTS
A Computer running OS/2 Presentation Manager. The program is developed
an tested with IBM OS/2 SE 1.2 and MSC 6.0. It does not support long
filenames and extended attributes.
COMMAND LINE OPTIONS
The order of command options and .DVI file name is not significant; all
switch values are accepted by this driver, but not all are really
meaningful.
Letter case is ignored in option switches: -A and -a are equivalent.
-a Implement virtual font caching. This option is
essentially useless for this driver.
-d Produce debugging output on stderr if a non-zero
value is given. These are:
2 --- Display coordinates, metrics, and bitmap
of each character.
8 --- Display each successful file opening.
16 --- Display each unsuccessful file opening.
32 --- Show discarded off-page text.
64 --- Trace virtual font caching.
128 --- Trace character setting.
It is possible to combine these options by adding
their values.
IMPORTANT:
It is at this time not possible to view debug output
in a PM window. To inspect debug results stderr can be
redirected to a file. For example:
DVI2PM -d24 test.dvi 2> debug.out
-eVAR=value Define environment variables on command line. This
is an alternative to placing them in the DOS
environment.
-ffontsubfile Define an alternate font substitution file which is
to be used instead of the default ones (see below).
-l Inhibit logging.
-m Reset magnification. The default for the screen
(k/2)
driver is -m502. Useful values are int(1500*1.2 )
from 279 to 1500. Other values will be reset to the
nearest value in this set. Magnification values less
than 25 are taken to be a TeX magstep parameter
which is applied to the standard magnification for
that device. Thus -m-0.5 will reduce the output size
by the square root of 1.2, -m2 will increase it by
a factor of 1.44.
You may well need to use this parameter frequently;
good values to try are 603, 502, 459, 419, 382,
349, 318, and 289. These are equivalent to -m0.5,
-m-0.5, -m-1, ... -m-3.5. -m382 or -m-2 gives actual
size output using VGA on an IBM8513 monitor.
Sizes smaller than 459 use substitute fonts, so that
they may not come out looking quite perfect.
Read about "Batch Files" to find an easy way of
changing sizes.
-x#units The -x options specify the left margin of the TeX
page on the output page in any of several units.
Letter case is not significant in the units field,
which must not be separated from the number by any
space. The number may be fractional. For example,
-x1.0in, -x2.54cm, -x72.27pt, and -x6.0225pc all
specify a one-inch left margin. Negative values are
permissible, and may be used to shift the output
page left (possibly truncating it on the left) in
order to display a wide TeX page.
The units field is mandatory, and may be one of
big point (1in = 72bp)
cicero (1cc = 12dd)
centimeter (1in = 2.54cm)
didot point (1157dd = 1238pt)
inch
millimeter (10mm = 1cm)
pica (1pc = 12pt)
point (72.27pt = 1in)
scaled point (65536sp = 1pt)
-y#units This is just like -x except that it is for the top
margin.
Because the normal defaults waste screen space, the
defaults for the screen driver have both been set to
zero. If you wish to get the correct margins and
size, try -x1.in -y1.in -m382 for DVIVGA.
FONT SUBSTITUTION
If no -ffontsubfile option is given, and font substitution is required,
if the current .DVI file is foo.dvi, then the files foo.sub,
texfonts.sub, and TEXINPUTS\texfonts.sub will be tried in order. The
first two will be found on the current directory, and the last is the
default given in the environment string TEXINPUTS. The -f option
allows all of these to be overridden. It is essentially necessary to
have this file if you use a magnification smaller than the default for
DVI2PM. A copy of a suitable one is supplied.
Font substitution lines have the form:
oldname.oldmag subname.submag % comment
oldname oldmag subname submag % comment
oldname subname % comment
Examples are:
----------
% These provide replacements for some LaTeX invisible fonts:
icmr10 1500 -> cmr10 1500 % comment
icmr10.1500 -> cmr10.1500 % comment
icmssb8 -> cmssb8 % comment
----------
The first two forms request substitution of a particular font and
magnification. The third form substitutes an entire font family; the
closest available magnification to the required one will be used. Any
dots in the non-comment portion will be converted to spaces, and
therefore, cannot be part of a name field.
The first matching substitution will be selected, so
magnification-specific substitutions should be given first, before
family substitutions.
Comments are introduced by percent and continue to end-of-line, just as
for TeX. One whitespace character is equivalent to any amount of
whitespace. Whitespace and comments are optional.
SCREEN CONTROL
DVI2PM supports interactive viewing of the TeX output. Here is the
current command list. Input is immediate; no terminating carriage
return is necessary, except for the number command to go to a
particular page.
home Displays first page.
end Displays last page.
pageup Displays previous page.
pagedown Displays next page.
number keys Goto page. For example: "66 <ENTER>" diplays page 66.
uparrow downarrow Move the view of the current page up or down. These
commands do not require recalculating the screen
image and are very fast.
D Move the page origin one inch down.
d Move the page origin one-quarter inch down.
U Move the page origin one inch up.
u Move the page origin one-quarter inch up.
L Move the page origin one inch left.
leftarrow or l Move the page origin one-quarter inch right.
R Move the page origin one inch right.
rightarrow or r Move the page origin one-quarter inch right.
"Inches" refers to the "printed" page, and is only
approximate on the screen.
Q (or q or X or x or Ctrl Break or Ctrl C or Ctrl Y) Quit
or exit. The screen will be cleared and restored to
its normal mode.
B Zoom up one magstep (1.2 times larger) from current
size.
b Zoom up 1/2 magstep (1.09 times larger) from
current size.
S Zoom down one magstep (1.2 times smaller) from
current size.
s Zoom down 1/2 magstep (1.09 times smaller) from
current size.
How well these zoom options work depends on how many
fonts you have loaded: more is better.
The command sequence RDSS will result in a display of
approximately the same size and origin as a printed
page if your physical display is the same size as
the IBM 8513, and you start at the normal defaults.
FONTSIZE MENU
Zooms the page according to selected fontsize.
fontsize | equivalent magnification
----------------------------------------
92 | 459
100 | 502
110 | 550 defualt value
121 | 603
132 | 660
145 | 723
174 | 868
208 | 1042
250 | 1250
300 | 1500
SPECIALS
The TeX \special command is intended to allow the specification in a
.tex file of a request to the .DVI driver, usually for the insertion
of graphical material at that point in the document. It is not
implemented for the DVI2PM driver.
BATCH FILES
If you need to use other than the default size a lot, for instance if
your text is wider than 5.6 inches, you can make this convenient by
using a batch file. For example, make a batch file, say DVIWIDE.CMD
containing the line
DVI2PM -m459 -x0.1in %1
and nothing else. Then if you say "DVIWIDE filename" you will get your
6.5 inch wide file to fit on the page. You can of course adjust these
numbers for your own favorite text shape, and can change other things
as well.
ENVIRONMENT VARIABLES
The behaviour of the .DVI translators can be influenced by definition
of logical names under OS/2. They should be
entirely in upper case.
The names currently recognized are as follows:
FONTLIST Normally, the drivers are prepared to search first for
.pk, then .gf, then .pxl font files. This variable can
be used to change this search order, or remove one or
more of the possibilities. It is expected to contain at
least one of the strings PK, GF, or PXL, possibly
separated by arbitrary punctuation and other text. Letter
case is not significant. Some acceptable strings are
PXL-then-PK-then-GF, pk.gf, use-only-PXL-fonts, and
PXL/GF/PK. For the fonts provided with this product, use
"set FONTLIST=pk".
TEXFONTS This defines the directory path for finding font files.
Its value is prepended to the name of a font to get a
full file specification. A typical value for TEXFONTS
would be d:\tex\texfonts\.
TEXINPUTS This defines the directory path for finding files which
are not in the current working directory. It is
prepended to file names. A typical value for TEXINPUTS
would be d:\tex\texinput\
You can omitting FONTLIST (which at worst would slow things down a bit).
You could get rid of TEXINPUTS entirely by putting a copy of texfonts.sub
in your current directory.
DIRECTORY STRUCTURE FOR FONTS
The fonts have to be placed in a proper manner. Assuming you set, as I
do, TEXFONTS to d:\tex\texfonts\, you need to place all the fonts
for size 100 in directory d:\tex\texfonts\100, those for size 121 in
d:\tex\texfonts\121, etc. Note that this implies that you will have
a lot of subdirectories with names that are numbers. These numbers
are dot per inch values, and are 1/5 the "magnification value" used
with the "m" command line parameter. It is traditional to put .pk
and .gf fonts in directories numbered like that. Pixel (.pxl) files
are, on the other hand, placed in directories with the magnification
value in their name. Thus \100\cmr10.pk and \502\cmr10.pxl are likely
the same font. It appears that PcTeX uses .pxl files a lot for their
drivers. DVI2PM will use those if they are in the size series it expects.
Having .pk and .pxl files in the same directory structure PROBABLY
won't hurt, though it has not been tested. There is nothing magic
about these directory names - if you like \pixel\ instead of \texfonts\,
perhaps because it is already there, use it instead.
BUGS
May appear because the program is not tested under all conditions.
WARRANTIES
This program is distributed in the hope that it will be useful, but
without any warranty.