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9.18. Rendering the Canvas as PostScript
To get a
copy of the Canvas as PostScript, use the
postscript method. It will
either return the PostScript output or, if the
-file option is specified, put it in a file:
$postscript = $canvas->postscript( );
$canvas->postscript(-file => "ps.out");
The following options allow you to control the output of the
PostScript:
- -colormap => \@array
-
Specifies that each element in
@array must be a valid PostScript command
for setting color values (e.g., "1.0 1.0 0.0
setrgbcolor").
- -colormode => "color" | "gray" | "mono"
-
Creates
the PostScript in full color, grayscale ("gray"),
or black and white ("mono").
- -file => filename
-
Specifies the file in which to put
the PostScript output.
- -fontmap => \@array
-
Each element
in @array is a two-element array that
contains a font name and a point size. The font name should be a
complete font name so Tk will parse it correctly (e.g.,
"-*-Helvetica-Bold-O-Normal--*-140-*").
- -height => size
-
Sets the height of the area to
print. The default height is the Canvas height.
- -pageanchor => "n" | "e" | "s" | "w" | "center"
-
Indicates where the page should be placed over the positioning point
specified by the -pagex and
-pagey options.
- -pageheight => height
-
Sets the
height of the printed page. The Canvas image will be scaled to fit.
height is any valid screen distance.
- -pagewidth => width
-
Sets the
width of the printed page. The Canvas image will be scaled to fit.
- -pagex => x
-
Sets the coordinate for the x positioning point. Can be any valid
screen distance.
- -pagey => y
-
Sets the
coordinate for the y positioning point. Can be any valid screen
distance.
- -rotate => 0 | 1
-
If 1, the
page is rotated into a landscape orientation. Default is 0, which is
portrait orientation.
- -width => size
-
Sets the width of the Canvas area
to be printed. Defaults to the width of the Canvas.
- -x => x
-
Sets the left edge
of the area to be printed (in Canvas coordinates). Default is the
left edge of the window.
- -y => y
-
Sets the top edge of the area to be
printed (in Canvas coordinates). Default is the left edge of the
window.
 |  |  |
| 9.17. Setting Keyboard Focus |  | 9.19. Scaling the Canvas |
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