Mac Cody's nearly pure-Tcl PDF-savvy extension, whose home is on SourceForge at http://trampoline.sourceforge.net
RS: Trampoline is also a coding concept to allow unbounded recursion.
Trampoline is an extension to enable Adobe PDF output from the canvas. From SourceForge:-
Trampoline! is a nearly pure-Tcl library extension that generates an Adobe Portable Document Format (PDF) document based upon the content of a Tk canvas. The intent of this extension is to provide a "modern" replacement for the Tk canvas widget command postscript, which generates a Postscript document based upon the content of a Tk canvas. Trampoline! is striving to be compliant with Adobe PDF Reference version 1.4.
DPE 10 May 2005 Thanks for a useful package. I found a bug with text that contains nothing but whitespace that causes generate to fail. This can be fixed by adding the following lines near the top of TextConvert:
# Do not process blank text
if {[string trim [$w itemcget $item -text]] == ""} {
return ""
}MP 13 August 2005 Great package.
I also found a bug, only the visible part of the canvas is placed in the pdf. This can be overcome when replacing
AppendPageObject [winfo width $w] [winfo height $w]
by
set Size [$w cget -scrollregion]
AppendPageObject [lindex $Size 2] [lindex $Size 3]In the generate proc. I have not tested it when scrollregion is not set in the canvas definition
SH 27 November 2006 This isn't a bug, but a intended feature as one can see in the comment line above this command:
# The page size mirrors the actual displayed geometry of the canvas.
You can also use
set Size [$w bbox all]
for getting the area of the canvas where items are.
Alastair Davies uses this on the MacOS X platform, for which it needs one modification. The output file must be fconfigured with -translation binary instead of -translation lf (16 Aug 2006)