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NAME
pageview - PostScript language previewer for OpenWindows
SYNOPSIS
pageview [ -mono ] [ -w paperwidth ] [ -h paperheight ] [
-dpi dots/inch ]
[ -mcd colordensity ] [ -page pagenumber ] [ -dir
directory ]
[ -left|right|upsidedown ] [ -timeout job_timeout (sec)
] [ -aa ]
[ -low_memory ] [ -usage ] [ -v ] [ -verbose ] [ psfile
| - ]
DESCRIPTION
pageview is an interactive POSTSCRIPT previewer. pageview
renders a document, a page at a time, onto an offscreen bit-
map of arbitrary size, resolution and orientation. You can
then adjust the viewing window's size to see as much of the
page as desired. The mouse buttons are used to position the
page under the window in two different modes.
The left button moves the page in "relative mode". This
allows you to move the page in a physically intuitive way.
You press the left button on the page and while you drag the
mouse around, the spot on the page that was under the mouse
cursor when you pressed the button remains stationary rela-
tive to the cursor.
The middle button moves the page in "absolute mode". This
allows you to easily get to the edges of the document, espe-
cially when the DPI is large and/or the window is small.
When you press the middle button on a point in the window,
the page is adjusted so that the same relative point on the
page is under the mouse. For example, if you press the mid-
dle button at the top right corner of the window, you will
see the top right corner of the page. A little experimenta-
tion with a page at 300 dpi and you will find this mode
indispensable.
The three menu buttons across the top of the main window are
described below:
File The File menu is used to bring up the Load... or
Print... dialogs.
Load... brings up a dialog which prompts for a directory
and filename to load a new POSTSCRIPT file.
Print... brings up a dialog which prompts for the name of
the printer to send the POSTSCRIPT document to.
You can print the whole document or only the
current page. You may also write the POSTSCRIPT to
a named file.
View The View menu allows you to move to the Next, Pre-
vious, First and Last pages of multipage documents.
Edit The edit menu has two choices, POSTSCRIPT and Pro-
perties.
PostScript...
brings up a text editor with the POSTSCRIPT docu-
ment in it and a window which contains all of the
errors and other output from the document. You may
make changes to the document and press the run but-
ton to re-render the page.
Properties...
brings up the property sheet for page size, orien-
tation and resolution.
DPI: This lets you change the "resolution" of the
retained bitmap which the page is being rendered
onto. 72 dpi will make a US Letter sized page be
612x792 pixels, where 300 dpi would be 2550x3300
pixels. This has the effect of making 72 dpi
images appear smaller and 300 dpi pages appear
larger due to the static resolution of the display.
pageview starts out at 85 dpi, unless you have the
environment variable $DPI set to some other
default, or you use the -dpi command line argument.
Size: This lets you change the size of the retained bit-
map which the page is rendered onto. USLetter is
8.5x11", Legal is 8.5x14", and the European page
sizes are, A3 29.7 x 42.0 cm, A4 21.0 X 29.7 cm, A5
14.8 x 21.0 cm, and B5 17.6 x 25.0 cm. These
values can be set to custom values by the -height
and -width command line arguments.
Orientation:
This menu lets you choose which way to rotate the
paper in 90 degree increments. This is useful for
viewing slides which are commonly rendered in
"Landscape left" orientation.
Timeout: This option allows you to select the job timeout
value. This value is used by pageview as the
amount of time in which a page of a document must
be rendered onto the screen. If the page cannot be
rendered in this time, pageview assumes that there
is some sort of POSTSCRIPT error on the page which
is causing this problem (such as a string or pro-
cedure that does not end) and stops trying to
display the page. However, often times, documents
that contain complex graphics may take a longer
than average amount of time to display. In this
case, you should increase the job timeout value and
attempt to display the page again.
Ignore PostScript Structuring Comments:
pageview is designed to scan a POSTSCRIPT file and
determine the different sections of it based on
POSTSCRIPT Structuring Comments. For example, from
reading these comments, pageview determines where
each page of the document starts and ends. How-
ever, as there are many POSTSCRIPT documents that
do not use the comments, pageview often gets con-
fused as to the number of pages in a document
and/or where they began and end. Therefore, if you
attempt to view a document, but feel that the
resulting displayed document does not look as you
expected, you may want to turn on this option.
This option will assume that there are no
POSTSCRIPT Structuring comments, and interpret the
file differently. Be aware though, this method of
interpreting the POSTSCRIPT file may be slower than
the default method, especially if the file is very
big.
OPTIONS
-mono
is used to force pageview to use a monochrome retained
canvas on color systems. This saves memory and is fas-
ter on some framebuffers.
-w paperwidth
sets the width of the "paper" to paperwidth inches,
the default is 8.5.
-h paperheight
sets the height of the "paper" to paperheight
inches, the default is 11.
-dpi dots/inch
sets the "dpi" of the "paper" to dots/inch. The
environment variable $DPI is used if this option is
not present, and the default is 85 if this variable
is not in the environment. Caution must be used in
setting this argument as well as the paper size
args above, so you do not exhaust memory resources.
For example a USLetter sized page previewed at 300
dpi, takes up 300*8.5/8*300*11 or a little over a
Megabyte. The same page at 1500 dpi takes over 26
Megabytes.
-mcd colordensity
Sets the maximum color density. The default max-
imum color density is 100. However, if an image is
to be viewed with a DPI greater than 100, it will
not be displayed in color unless the maximum color
density is set greater than 100.
-page pagenumber
Sets the page number of the document that is to be
displayed when pageview starts.
-dir directory
Sets the current working directory to directory so
that you can type filenames at the "Load File: "
prompt relative to directory.
-left|right|upsidedown
Sets the rotation of the page.
-timeout job_timeout (sec)
Sets the job timeout value. The default job
timeout value is 30 seconds.
-aa Turns on antialiasing.
-low_memory
Runs a low memory version of pageview. This version
does not create the offscreen bitmap, and rather
renders the document directly onto the viewing can-
vas. This uses less memory, but performance may
suffer especially when the pageview window is hid-
den and then exposed, as the entire page must be
rendered again. If the user attempts to move the
page in "relative mode" (pan), the offscreen bitmap
is automatically created as this function is not
possible without it. Also, this option cannot be
used if antialiasing is turned on.
-usage Prints out all valid command line options.
-v Prints out the current version of pageview.
-verbose Prints lots of debugging information (not useful to
the user)
file.
If psfile is specified, the POSTSCRIPT code is taken from that
If no argument is given, pageview comes up with no document
in it and if a `-' is given as the argument, pageview reads
the POSTSCRIPT program from standard input.
SEE ALSO
lp(1)
OpenWindows user documentation
POSTSCRIPT Language Reference Manual, Adobe Systems Inc.,
Addison-Wesley
TRADEMARK
POSTSCRIPT is a registered trademark of Adobe Systems Inc
NOTES
The OpenWindows environment may no longer be supported in a
future release. You may want to migrate to CDE, the Common
Desktop Environment.
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