I am experiencing a problem I cannot solve.
When I run this little script, the euro symbol is displayed but on the
resulting postscript no.

Could someone point on a new direction to explain or solve this
behavior?

I use the later gsview to open .ps file. The euro is correctly
displayed if taken outside Tk (a BCE web page printed on ps printer).
Inside the ps file generated by Tk::Canvas the euro code is \200 which
means 'no font'.

I am using XP

Regards

use Tk;

$mw= new MainWindow;
$mw->geometry("700x400+470+170");
$mw->title(' Euro Symbol');


$canvas = $mw->Canvas(	-width => 700, -height => 400,
			-background => 'white') -> pack;

$canvas->createText(	100, 200, -anchor=> 'w',
			-text => "Euro Symbol is: \x80",
			-font => '-*-Helvetica-*-0-Normal-*-72-*-*-*-*-*-iso8859-15' ,
			-fill => 'blue');

$mw_b = $mw ->Button(	-text => 'Postscript',
			-command => sub { &to_ps}) -> place(-x => 0, -y => 0);

MainLoop;

sub to_ps{
$canvas->postscript(-file => 'out.ps', -x => 0, -y => 0, -colormode =>
'color');
}

Am 28.03.2011 10:56, schrieb tower:
> I am experiencing a problem I cannot solve.
> When I run this little script, the euro symbol is displayed but on the
> resulting postscript no.
>
> Could someone point on a new direction to explain or solve this
> behavior?
>
> I use the later gsview to open .ps file. The euro is correctly
> displayed if taken outside Tk (a BCE web page printed on ps printer).
> Inside the ps file generated by Tk::Canvas the euro code is \200 which
> means 'no font'.
>
> I am using XP
>
> Regards
>
> use Tk;
>
> $mw= new MainWindow;
> $mw->geometry("700x400+470+170");
> $mw->title(' Euro Symbol');
>
>
> $canvas = $mw->Canvas(	-width =>  700, -height =>  400,
> 			-background =>  'white') ->  pack;
>
> $canvas->createText(	100, 200, -anchor=>  'w',
> 			-text =>  "Euro Symbol is: \x80",
> 			-font =>  '-*-Helvetica-*-0-Normal-*-72-*-*-*-*-*-iso8859-15' ,
> 			-fill =>  'blue');
>
> $mw_b = $mw ->Button(	-text =>  'Postscript',
> 			-command =>  sub {&to_ps}) ->  place(-x =>  0, -y =>  0);
>
> MainLoop;
>
> sub to_ps{
> $canvas->postscript(-file =>  'out.ps', -x =>  0, -y =>  0, -colormode =>
> 'color');
> }


The euro sign is at 0xa4 if you use iso8859-15.
http://en.wikipedia.org/wiki/ISO/IEC_8859-15

Also always be explicit about your encodings to make sure perl gets its internal 
representation of your strings right:

use Encode;
#snip
my $text = decode('iso8859-15' => "Euro Symbol is: \xA4");

$canvas->createText(	100, 200, -anchor=> 'w',
			-text => $text,
			-font => '-*-Helvetica-*-0-Normal-*-72-*-*-*-*-*-' ,
			-fill => 'blue');

works for me.

HTH, CHristoph

-- 
Tk::EntrySet
   display/edit a list of values in a Set of Widgets.
Tk::ChoicesSet
   display/edit a list of choices in a Set of single-selection Widgets.

No, I cannot have this running.
I had try different encoding sheme but all fail...
I got 2 Unicode chars...

Please, could you post the resulting postscript file?

Regards.

[..]
> use Encode;
> #snip
> my $text = decode('iso8859-15' => "Euro Symbol is: \xA4");
> 
> $canvas->createText(    100, 200, -anchor=> 'w',
>             -text => $text,
>             -font => '-*-Helvetica-*-0-Normal-*-72-*-*-*-*-*-' ,
>             -fill => 'blue');
> 
> works for me.
> 
> HTH, CHristoph
> 

This is a multi-part message in MIME format.
--------------010302000008030005010305
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Am 28.03.2011 17:27, schrieb Tower:
> No, I cannot have this running.
> I had try different encoding sheme but all fail...
> I got 2 Unicode chars...


Why not 'use utf8' and utf-8 encoded source?

CHeers, Chris

>
> Please, could you post the resulting postscript file?
>
> Regards.
>
> [..]
>> use Encode;
>> #snip
>> my $text = decode('iso8859-15' =>  "Euro Symbol is: \xA4");
>>
>> $canvas->createText(    100, 200, -anchor=>  'w',
>>              -text =>  $text,
>>              -font =>  '-*-Helvetica-*-0-Normal-*-72-*-*-*-*-*-' ,
>>              -fill =>  'blue');
>>
>> works for me.
>>
>> HTH, CHristoph
>>


-- 
Tk::EntrySet
   display/edit a list of values in a Set of Widgets.
Tk::ChoicesSet
   display/edit a list of choices in a Set of single-selection Widgets.

--------------010302000008030005010305
Content-Type: application/postscript;
 name="out.ps"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
 filename="out.ps"

%!PS-Adobe-3.0 EPSF-3.0
%%Creator: Tk Canvas Widget
%%Title: Window .canvas
%%CreationDate: Mon Mar 28 13:06:42 2011
%%BoundingBox: 43 246 569 546
%%Pages: 1
%%DocumentData: Clean7Bit
%%Orientation: Portrait
%%DocumentNeededResources: font NimbusSansL
%%EndComments

%%BeginProlog
/CurrentEncoding [
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/exclam/quotedbl/numbersign/dollar/percent/ampersand/quotesingle
/parenleft/parenright/asterisk/plus/comma/hyphen/period/slash
/zero/one/two/three/four/five/six/seven
/eight/nine/colon/semicolon/less/equal/greater/question
/at/A/B/C/D/E/F/G
/H/I/J/K/L/M/N/O
/P/Q/R/S/T/U/V/W
/X/Y/Z/bracketleft/backslash/bracketright/asciicircum/underscore
/grave/a/b/c/d/e/f/g
/h/i/j/k/l/m/n/o
/p/q/r/s/t/u/v/w
/x/y/z/braceleft/bar/braceright/asciitilde/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
/space/space/space/space/space/space/space/space
] def
50 dict begin
% This is a standard prolog for Postscript generated by Tk's canvas
% widget.
% RCS: @(#) $Id: //depot/Tkutf8/Canvas/Canvas.pm#12 $

% The definitions below just define all of the variables used in
% any of the procedures here.  This is needed for obscure reasons
% explained on p. 716 of the Postscript manual (Section H.2.7,
% "Initializing Variables," in the section on Encapsulated Postscript).

/baseline 0 def
/stipimage 0 def
/height 0 def
/justify 0 def
/lineLength 0 def
/spacing 0 def
/stipple 0 def
/strings 0 def
/xoffset 0 def
/yoffset 0 def
/tmpstip null def


/cstringshow {
    {
	dup type /stringtype eq
	{ show } { glyphshow }
	ifelse
    }
    forall
} bind def



/cstringwidth {
    0 exch 0 exch
    {
	dup type /stringtype eq
	{ stringwidth } {
	    currentfont /Encoding get exch 1 exch put (\001) stringwidth
        }
	ifelse
	exch 3 1 roll add 3 1 roll add exch
    }
    forall
} bind def

% font ISOEncode font
% This procedure changes the encoding of a font from the default
% Postscript encoding to current system encoding.  It's typically invoked just
% before invoking "setfont".  The body of this procedure comes from
% Section 5.6.1 of the Postscript book.

/ISOEncode {
    dup length dict begin
	{1 index /FID ne {def} {pop pop} ifelse} forall
	/Encoding CurrentEncoding def
	currentdict
    end

    % I'm not sure why it's necessary to use "definefont" on this new
    % font, but it seems to be important; just use the name "Temporary"
    % for the font.

    /Temporary exch definefont
} bind def

% StrokeClip
%
% This procedure converts the current path into a clip area under
% the assumption of stroking.  It's a bit tricky because some Postscript
% interpreters get errors during strokepath for dashed lines.  If
% this happens then turn off dashes and try again.

/StrokeClip {
    {strokepath} stopped {
	(This Postscript printer gets limitcheck overflows when) =
	(stippling dashed lines;  lines will be printed solid instead.) =
	[] 0 setdash strokepath} if
    clip
} bind def

% desiredSize EvenPixels closestSize
%
% The procedure below is used for stippling.  Given the optimal size
% of a dot in a stipple pattern in the current user coordinate system,
% compute the closest size that is an exact multiple of the device's
% pixel size.  This allows stipple patterns to be displayed without
% aliasing effects.

/EvenPixels {
    % Compute exact number of device pixels per stipple dot.
    dup 0 matrix currentmatrix dtransform
    dup mul exch dup mul add sqrt

    % Round to an integer, make sure the number is at least 1, and compute
    % user coord distance corresponding to this.
    dup round dup 1 lt {pop 1} if
    exch div mul
} bind def

% width height string StippleFill --
%
% Given a path already set up and a clipping region generated from
% it, this procedure will fill the clipping region with a stipple
% pattern.  "String" contains a proper image description of the
% stipple pattern and "width" and "height" give its dimensions.  Each
% stipple dot is assumed to be about one unit across in the current
% user coordinate system.  This procedure trashes the graphics state.

/StippleFill {
    % The following code is needed to work around a NeWSprint bug.

    /tmpstip 1 index def

    % Change the scaling so that one user unit in user coordinates
    % corresponds to the size of one stipple dot.
    1 EvenPixels dup scale

    % Compute the bounding box occupied by the path (which is now
    % the clipping region), and round the lower coordinates down
    % to the nearest starting point for the stipple pattern.  Be
    % careful about negative numbers, since the rounding works
    % differently on them.

    pathbbox
    4 2 roll
    5 index div dup 0 lt {1 sub} if cvi 5 index mul 4 1 roll
    6 index div dup 0 lt {1 sub} if cvi 6 index mul 3 2 roll

    % Stack now: width height string y1 y2 x1 x2
    % Below is a doubly-nested for loop to iterate across this area
    % in units of the stipple pattern size, going up columns then
    % across rows, blasting out a stipple-pattern-sized rectangle at
    % each position

    6 index exch {
	2 index 5 index 3 index {
	    % Stack now: width height string y1 y2 x y

	    gsave
	    1 index exch translate
	    5 index 5 index true matrix tmpstip imagemask
	    grestore
	} for
	pop
    } for
    pop pop pop pop pop
} bind def

% -- AdjustColor --
% Given a color value already set for output by the caller, adjusts
% that value to a grayscale or mono value if requested by the CL
% variable.

/AdjustColor {
    CL 2 lt {
	currentgray
	CL 0 eq {
	    .5 lt {0} {1} ifelse
	} if
	setgray
    } if
} bind def

% x y strings spacing xoffset yoffset justify stipple DrawText --
% This procedure does all of the real work of drawing text.  The
% color and font must already have been set by the caller, and the
% following arguments must be on the stack:
%
% x, y -	Coordinates at which to draw text.
% strings -	An array of strings, one for each line of the text item,
%		in order from top to bottom.
% spacing -	Spacing between lines.
% xoffset -	Horizontal offset for text bbox relative to x and y: 0 for
%		nw/w/sw anchor, -0.5 for n/center/s, and -1.0 for ne/e/se.
% yoffset -	Vertical offset for text bbox relative to x and y: 0 for
%		nw/n/ne anchor, +0.5 for w/center/e, and +1.0 for sw/s/se.
% justify -	0 for left justification, 0.5 for center, 1 for right justify.
% stipple -	Boolean value indicating whether or not text is to be
%		drawn in stippled fashion.  If text is stippled,
%		procedure StippleText must have been defined to call
%		StippleFill in the right way.
%
% Also, when this procedure is invoked, the color and font must already
% have been set for the text.

/DrawText {
    /stipple exch def
    /justify exch def
    /yoffset exch def
    /xoffset exch def
    /spacing exch def
    /strings exch def

    % First scan through all of the text to find the widest line.

    /lineLength 0 def
    strings {
	cstringwidth pop
	dup lineLength gt {/lineLength exch def} {pop} ifelse
	newpath
    } forall

    % Compute the baseline offset and the actual font height.

    0 0 moveto (TXygqPZ) false charpath
    pathbbox dup /baseline exch def
    exch pop exch sub /height exch def pop
    newpath

    % Translate coordinates first so that the origin is at the upper-left
    % corner of the text's bounding box. Remember that x and y for
    % positioning are still on the stack.

    translate
    lineLength xoffset mul
    strings length 1 sub spacing mul height add yoffset mul translate

    % Now use the baseline and justification information to translate so
    % that the origin is at the baseline and positioning point for the
    % first line of text.

    justify lineLength mul baseline neg translate

    % Iterate over each of the lines to output it.  For each line,
    % compute its width again so it can be properly justified, then
    % display it.

    strings {
	dup cstringwidth pop
	justify neg mul 0 moveto
	stipple {


	    % The text is stippled, so turn it into a path and print
	    % by calling StippledText, which in turn calls StippleFill.
	    % Unfortunately, many Postscript interpreters will get
	    % overflow errors if we try to do the whole string at
	    % once, so do it a character at a time.

	    gsave
	    /char (X) def
	    {
		dup type /stringtype eq {
		    % This segment is a string.
		    {
		        char 0 3 -1 roll put
		        currentpoint
		        gsave
		        char true charpath clip StippleText
		        grestore
		        char stringwidth translate
		        moveto
		    } forall
		} {
		    % This segment is glyph name
		    % Temporary override
		    currentfont /Encoding get exch 1 exch put
		    currentpoint
		    gsave (\001) true charpath clip StippleText
		    grestore
	            (\001) stringwidth translate
		    moveto
		} ifelse
	    } forall
	    grestore
	} {cstringshow} ifelse
	0 spacing neg translate
    } forall
} bind def

%%EndProlog
%%BeginSetup
/CL 2 def
%%IncludeResource: font NimbusSansL
%%EndSetup

%%Page: 1 1
save
306.0 396.0 translate
0.7492 0.7492 scale
-350 -200 translate
0 400 moveto 700 400 lineto 700 0 lineto 0 0 lineto closepath clip newpath
gsave
/NimbusSansL findfont 54 scalefont ISOEncode setfont
0.000 0.000 1.000 setrgbcolor AdjustColor
100 200 [
[(Euro Symbol is: )/Euro()]
] 90 -0 0.5 0 false DrawText
grestore
restore showpage

%%Trailer
end
%%EOF

--------------010302000008030005010305--

Thank for the answer :)

> Why not 'use utf8' and utf-8 encoded source?

Because it change nothing. The problem is not in the display of � glyph
under Canvas, but in the conversion canvas-> postcript

Displaying glyph under xp use the windows/fonts directory. All fonts
here are available for the canvas. But calling the postscript method
rely on adobe font, probably building with Tk::Canvas.

So I suspect my Perl 5.8.0 and Tk 800.025 are the problem.
By the way, which version of Tk are you using?

Anyway, thanks for your time.

On Mar 28, 2:51=A0pm, Tower <tower...@nerim.net> wrote:
> Thank for the answer :)
>
> > Why not 'use utf8' and utf-8 encoded source?
>
> Because it change nothing. The problem is not in the display of =80 glyph
> under Canvas, but in the conversion canvas-> postcript
>
> Displaying glyph under xp use the windows/fonts directory. All fonts
> here are available for the canvas. But calling the postscript method
> rely on adobe font, probably building with Tk::Canvas.
>
> So I suspect my Perl 5.8.0 and Tk 800.025 are the problem.
> By the way, which version of Tk are you using?
>
> Anyway, thanks for your time.

Tk 800.025 is from Sept 2003, so there have been many changes
including this one:

Changes in Tk804.023
First public release of version based on Unicode aware core tk.