vprerex - graphical front-end and viewer for the prerex(1) prerequisite-chart editor
vprerex basefile[.tex] [ chartfile[.tex] ]
vprerex (visual prerex) is a GUI front-end and viewer for the prerex(1) interactive editor of prerequisite-chart descriptions in the pre-
rex(5) format. The viewer may be used just as a minimalistic viewer of arbitrary PDF files but supports editing of charts generated using
prerex.sty(7) by allowing coordinates of course boxes, arrows, and background points to be conveyed back to the prerex(1) command-line
using the clipboard.
If vprerex is invoked on a PDF file, it simply displays that file.
If the (first) argument does not have the .pdf suffix, it is assumed to be the base file for a LaTeX document containing a prerequisite-
chart description in prerex(5) format, to be edited using prerex(1). If a second argument is supplied, it is regarded as an included file
containing the specific chart environment to be edited.
If no arguments are supplied, a file-opening dialog allows the user the specify the prerex(1) base file to be edited (or the PDF file to be
viewed); if a separate chartfile is needed, vprerex(1) must be invoked wth two arguments on the command line.
If the mouse hovers over a hyperlink in the PDF viewing window, the cursor shape will change to a pointing finger and a tooltip will dis-
play the URI. If the PDF file displayed contains a chart generated using prerex.sty(7) and the background coordinate grid has been
enabled, left-clicking the mouse on a course box, arrow mid-point, or background point will load the relevant coordinates into the X clip-
board. The cursor shape changes to a plus-sign to indicate successful capture of the coordinates. Middle-clicking the mouse at the pre-
rex(1) command-line will then paste those coordinates into a command being composed. If the chart file is regenerated, the updated docu-
ment will be re-loaded.
vprerex is based on the Qt-4 library. It calls xterm(1) and prerex(1) for the editing window and uses poppler-qt4 for rendering PDF files.
R. D. Tennent (firstname.lastname@example.org), adapted from David Boddie's PDFviewer, described in the QT Quarterly: http://doc.troll-
prerex(1), prerex(5), prerex.sty(7), and xterm(1).
vprerex-6.2 2011-10-28 VPREREX(1)