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bradcathey has asked for the wisdom of the Perl Monks concerning the following question:
Fellow Monasterians,
I can draw primitives (boxes, lines, circles) with Imager without problems. But I'm trying to get text to work. All I get is a blank screen. I have it feeling it's a font issue: I'm using the wrong path, the wrong type, or. . . .
I have uploaded Copperplate.dfont (Mac) right into my cgi-bin folder. I would like to try something like Arial.ttf, but they are all 0 bytes on my machine.
So, what am I not getting here? Thanks in advance!
#!/usr/local/bin/perl
use warnings;
use strict;
use CGI::Carp qw(fatalsToBrowser);
use Imager;
my $img = Imager->new(xsize=>400,ysize=>300);
$img->box(filled=>1, color=>"ffffff"); #fill the background color
my $font = Imager::Font->new(
file => 'Copperplate.dfont',
index => 0,
color => '444444',
size => 30,
aa => 1);
$img->string(
font=>$font,
text=>'This is a test string',
x=>20,
y=>10);
$img->write(file=>"drawing.jpg", type=>"jpeg") or die "Cannot write f
+ile: ", Imager->errstr;
—Brad
"The important work of moving the world forward does not wait to be done by perfect men." George Eliot
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Re: How to use Imager for text
by teabag (Pilgrim) on Oct 28, 2005 at 16:40 UTC
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Hey bradcathey
I'm not sure if Imager can use macfonts? Have you tried postscript fonts? I used ttf fonts in the past without any problems though.
On Imager::Font I found something to check if Imager is t1 or truetype capable:
use Imager;
print "Has truetype" if $Imager::formats{tt};
print "Has t1 postscript" if $Imager::formats{t1};
print "Has Win32 fonts" if $Imager::formats{w32};
print "Has Freetype2" if $Imager::formats{ft2};
I also found some link that's about Imager and .dfonts. It claims you need to add:
my $font = Imager::Font->new(file=>$font, type=>ft2) or die Imager->er
+rstr;
Check the link below for the whole discussion:
http://use.perl.org/comments.pl?sid=24188&cid=37046
Good luck ;)
teabag
Blessed is the end user who expects nothing, for he/she will not be disappointed.
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Thanks teabag, but designating the type as 'ft2' didn't work. I managed to get an arial.ttf file uploaded to my cgi-bin, but still no dice. I'm surprised I getting a blank screen without any error messages, even if I substitute 'arial' for some font I know is not there. BTW, I'm getting a positive read with:
print "Has truetype" if $Imager::formats{tt};
Here's what I have now, for what it's worth:
my $font = Imager::Font->new(
file => "arial",
type => "tt",
index => 1,
color => "444444",
size => 30,
aa => 1);
$img->string(
font => $font,
text => "This is a test string",
x => 20,
y => 10);
—Brad
"The important work of moving the world forward does not wait to be done by perfect men." George Eliot
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Re: How to use Imager for text
by zentara (Archbishop) on Oct 28, 2005 at 19:14 UTC
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Hi, I tried your script and found the problem to be in the color specification for the font. If I used your 'color=>444444' I would get an error "cl is not of type Imager::Color. This worked for me
#!/usr/bin/perl
use warnings;
use strict;
use Imager;
my $img = Imager->new(xsize=>400,ysize=>50,channels=>4);
my $blue = Imager::Color->new("#0000FF");
my $font = Imager::Font->new(
file => 'Generic.ttf',
color => $blue,
size => 30);
$img->string(font => $font,
text => "Model-XYZ",
x => 15,
y => 40,
size => 40,
color => $blue,
aa => 1);
$img->write(file=>$0.'.png', type=>'png')
or die "Cannot write: ",$img->errstr;
my $img_mirror = $img->copy();
$img_mirror->flip( dir => "h" );
$img_mirror->write(file=>$0.'-mirror.png', type=>'png')
or die "Cannot write: ",$img_mirror->errstr;
I'm not really a human, but I play one on earth.
flash japh
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Thanks zentara, I thought we were golden. But when I cut and paste your code and run it from my host (pair networks), the .png files are totally blank, though they contain bytes.
Very weird.
—Brad
"The important work of moving the world forward does not wait to be done by perfect men." George Eliot
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Oops, I made a mistake in cut'n'pasting and got the wrong code.
Try this, and make sure you have a "Generic.ttf"(just rename Arial.ttf")
#!/usr/bin/perl
use warnings;
use strict;
use CGI::Carp qw(fatalsToBrowser);
use Imager;
my $img = Imager->new(xsize=>400,ysize=>300);
$img->box(filled=>1, color=>"ffffff"); #fill the background color
my $blue = Imager::Color->new("#0000FF");
my $font = Imager::Font->new(
file => 'Generic.ttf',
index => 0,
color => $blue,
size => 30,
aa => 1);
$img->string(
font=>$font,
text=>'This is a test string',
x=>20,
y=>70);
$img->write(file=>"$0.jpg", type=>"jpeg") or die "Cannot write file:
+", Imager->errstr;
I'm not really a human, but I play one on earth.
flash japh
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