Tony Lainson
parent
2fb0c4447e
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1 changed files with 247 additions and 49 deletions
296
man/man1/page.1
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man/man1/page.1
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.TH PAGE 1
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.TH PAGE 1
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.SH NAME
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.SH NAME
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img, psv \- view
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page \- view
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FAX,
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FAX,
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image, graphic, PostScript, PDF, and
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image, graphic, PostScript, PDF, and
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typesetter output
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typesetter output
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@ -8,67 +8,265 @@ files
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.SH SYNOPSIS
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.SH SYNOPSIS
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.B page
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.B page
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[
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[
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.B -abirPRvVw
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]
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[
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.B -p
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.I ppi
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]
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[
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.IR file ...
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.IR file ...
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]
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]
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.PP
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.B img
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.I file.bit
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.PP
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.B psv
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.I file.ps
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.PP
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.B psv
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.I file.pdf
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.SH DESCRIPTION
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.SH DESCRIPTION
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Plan 9's
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.I Page
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.IR page (1)
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is a general purpose document viewer.
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is not ported.
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It can be used to display the individual pages
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Instead,
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of a
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PostScript,
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PDF,
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or
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.IR troff (1)
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or
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Unix's \fItex\fR(1)
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device-independent output
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file.
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.I Troff
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or
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.I tex
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output is simply converted to PostScript in order to be viewed.
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It can also be used to view any number of
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graphics files
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(such as a
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FAX
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page,
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a Plan 9
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.IR image (7)
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file, an Inferno bitmap file, or other common format).
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.I Page
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displays these
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in sequence.
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In the absence of named files,
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.I page
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.I page
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is a script that invokes
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reads one from standard input.
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.IR qiv (1)
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.PP
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to view graphic files
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By default,
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.I page
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runs in the window in which it is started
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and leaves the window unchanged.
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The
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.B -R
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option causes
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.I page
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to grow the window if necessary
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to display the page being viewed.
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The
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.B -w
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option causes
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.I page
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to create a new window for itself.
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The newly created window will grow as under the
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.B -R
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option.
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If being used to display
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multipage documents,
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only one file may be specified on the command line.
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.PP
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The
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.B -p
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option sets the resolution for PostScript and PDF
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files, in pixels per inch.
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The default is 100 ppi.
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The
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.B -r
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option reverses the order in which pages are displayed.
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.PP
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When viewing a document,
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.I page
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will try to guess the true bounding box, usually rounding up from
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the file's bounding box to
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8½×11 or A4 size.
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The
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.B -b
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option causes it to respect the bounding box given in the file.
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As a more general problem,
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some PostScript files claim to conform to Adobe's
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Document Structuring Conventions but do not.
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The
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.B -P
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option enables a slightly slower and slightly more
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skeptical version of the PostScript processing code.
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Unfortunately, there are PostScript documents
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that can only be viewed with the
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.B -P
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option, and there are PostScript documents that
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can only be viewed without it.
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.PP
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When viewing images with
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.IR page ,
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it listens to the
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.B image
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plumbing channel
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(see
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.IR plumber (4))
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for more images to display.
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The
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.B -i
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option causes
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.I page
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to not load any graphics files nor to read
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from standard input but rather to listen
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for ones to load from the plumbing channel.
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.PP
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The
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.B -v
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option turns on extra debugging output, and
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the
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.B -V
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option turns on even more debugging output.
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The
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.B -a
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option causes
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.I page
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to call
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Unix's \fIabort\fR(3)
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rather than exit cleanly on errors,
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to facilitate debugging.
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.PP
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Pressing and holding button 1 permits panning about the page.
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.PP
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Button 2 raises a menu of operations on the current image or the
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entire set. The image transformations are non-destructive and are
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valid only for the currently displayed image. They are lost as soon
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as another image is displayed.
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The button 2 menu operations are:
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.TF Resize
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.TP
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.B Orig size
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Restores the image to the original. All modifications are lost.
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.TP
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.B Zoom
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Prompts the user to sweep a rectangle on the image which is
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expanded proportionally to the rectangle.
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.TP
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.B Fit window
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Resizes the image so that it fits in the current window.
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.TP
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.B Rotate 90
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Rotates the image 90 degrees clockwise
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.TP
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.B Upside down
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Toggles whether images are displayed upside-down.
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.TP
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.B Next
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Displays the next page.
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.TP
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.B Prev
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Displays the previous page.
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.TP
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.B Zerox
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Displays the current image in a new page window.
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Useful for selecting important pages from large documents.
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.TP
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.B Reverse
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Reverses the order in which pages are displayed.
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.TP
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.B Write
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Writes the image to file.
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.PD
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.PP
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Button 3 raises a menu of the
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pages
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to be selected for viewing in any order.
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.PP
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Typing a
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.B q
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or
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or
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.I psv
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control-D exits the program.
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to view PostScript and PDF.
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Typing a
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On Mac OS X,
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.B u
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.I page
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toggles whether images are displayed upside-down.
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invokes Preview to handle all files.
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(This is useful in the common case of mistransmitted upside-down faxes).
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Typing a
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.B r
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reverses the order in which pages are displayed.
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Typing a
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.B w
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will write the currently viewed page to a new file as a compressed
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.IR image (7)
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file.
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When possible, the filename is of the form
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.IR basename . pagenum . bit .
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Typing a
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.B d
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removes an image from the working set.
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.PP
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.PP
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.I Img
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To go to a specific page, one can type its number followed by enter.
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is a simple image viewer for Plan 9 images
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Typing left arrow, backspace, or minus displays the previous page.
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(see
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Typing right arrow, space, or enter displays the next page.
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.IR image (7)).
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The up and down arrow pan up and down one half screen height,
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changing pages when panning off the top or bottom of the page.
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.PP
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.PP
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.I Psv
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.I Page
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is a PostScript and PDF viewer.
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calls
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It is a streamlined interface to
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Unix's \fIgs\fR(1)
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.IR gv (1).
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to draw each page of PostScript
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.PP
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and
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To view troff output, use
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PDF
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.IR proof (1).
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.IR files .
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It also calls a variety of conversion programs, such as those described in
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.IR jpg (1),
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to convert the various raster graphics formats
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into Inferno bitmap files.
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Pages are converted ``on the fly,'' as needed.
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.SH EXAMPLES
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.TP
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.L
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page /sys/src/cmd/gs/examples/tiger.eps
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Display a color PostScript file.
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.TP
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.L
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page /usr/inferno/icons/*.bit
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Browse the Inferno bitmap library.
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.TP
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.L
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man -t page | page -w
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Preview this manual in a new window.
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.SH "SEE ALSO
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.SH "SEE ALSO
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.IR gs (1),
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.IR gs (1),
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.IR gv (1),
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.IR jpg (1),
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.IR jpg (1),
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.IR proof (1),
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.IR proof (1),
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.IR tex (1),
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.IR tex (1),
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.IR troff (1)
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.IR troff (1)
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.SH SOURCE
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.SH SOURCE
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.B \*9/src/cmd/draw/img.c
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.B \*9/src/cmd/page
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.br
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.SH DIAGNOSTICS
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.B \*9/bin/psv
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The mouse cursor changes to an arrow and ellipsis
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.SH BUGS
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when
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When using Preview on Mac OS X,
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.I page
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.I page
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leaves temporary files in
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is reading or writing a file.
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.BR /var/tmp ,
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.SH BUGS
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since it has no way to know when the viewer has exited.
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.PP
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.I Page
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.I Page
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does not handle
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supports reading of only one document
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Plan 9
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file at a time, and
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.IR image (7)
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the user interface is clumsy when viewing very large documents.
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files; use
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.PP
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.I img
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When viewing multipage PostScript files that do not contain
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explicitly.
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.RB `` %%Page ''
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comments, the button 3 menu only contains
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``this page'' and ``next page'':
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correctly determining
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page boundaries in Postscript code is not computable
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in the general case.
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.PP
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If
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.I page
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has trouble viewing a Postscript file,
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it might not be exactly conforming: try viewing it with the
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.B -P
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option.
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.PP
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The interface to the plumber is unsatisfactory. In particular,
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document references cannot be sent
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via plumbing messages.
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.PP
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There are too many keyboard commands and menu items.
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