#1119 Font scale incorrect in postscript

[Anonymous]

In the tk8.3.4 (and all earlier distributions) the
Tk_PostscriptFontName routine returns the size of the
font. It may (in principle) be either in points or
pixels. In practice it has been converted to points by
this time.

The postscript file contains a postscript scale
command at the start of the file that defines all the
canvas pixel coordinates be converted to points so
that points are the "postcript unit". The scalefont
command goes further and scales the font to be scaled
by the number of points.

If you:
1. place on the canvas a font of size 40 with the
text "This is some text"
2. get the bounding box of the text and draw a box
around the text using this.
3. generate a postscript file of the canvas with a -
pageheight of 8i
4. Look at the results in Ghostscript or on a printer

Notice that the bounding box is larger than the text.

I believe that the points must be scaled to pixels
before calling "scalefont" so that they are converted
back to points as a result of the "scale" command.
This should be done after the call to
Tk_PostscriptFontName in Tk_PostscriptFont in
tkCanvPs.c.