Bug 12068 - label-create-pdf.pl Add support for RTL language

On top of Bug 8375

If you print a label using arabic/hebrew script,
letters are printed in logical direction, from left
to right, giving a mangled result

This patch will try to fix those cases adding a new
perl dependency, Text::Bidi, and using the automagic
feature if it's log2vis() function to rearrange chars
based on detected text 'direction'

To test:
1. Install Text::Bidi package
(apt-get install libtext-bidi-perl)

2. Try a batch, using Helvetica, with a mix of
ltr and rtl (arabic/hebrew) titles, chars are good,
but direction is bad

NOTE: I suggest changing the mapping for 'HO' font
on koha-conf.xml, from DejaVuSans-Oblique.ttf to
DejaVuSans.ttf to view 'title' chars

3. Apply the patch

4. Try again, now the result is good

Formerly a followup of Bug 8375, look sample pics
on that Bug.
Rebased following changes on Bug 8375

Note: Arabic titles will not be displayed, because
current code selects Oblique variant (unless you
change mapping as suggested on 2. )
Hebrew looks good.

Rebased and move use of new dependency to Labels.pm

Rebased on master

Signed-off-by: Karam Qubsi <karamqubsi@gmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Tested with the help of Bernardo. With the patch
the characters of RTL strings appear in the correct
order in the generated PDF files.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

C4/Installer/PerlDependencies.pm

@@ -702,11 +702,17 @@ our $PERL_DEPS = {
         'required' => '0',
         'min_ver'  => '5.836',
     },
+
     'Test::DBIx::Class' => {
         'usage'    => 'Testing modules utilising DBIx::Class',
         'required' => '0',
         'min_ver'  => '0.42',
     },
+    'Text::Bidi'   => {
+        'usage'    => 'Label batch PDF',
+        'required' => '0',
+        'min_ver'  => '0.03',
+    },
 };
 
 1;

C4/Labels/Label.pm

@@ -8,6 +8,7 @@ use Algorithm::CheckDigits;
 use Text::CSV_XS;
 use Data::Dumper;
 use Library::CallNumber::LC;
+use Text::Bidi qw( log2vis );
 
 use C4::Context;
 use C4::Debug;
@@ -444,6 +445,7 @@ sub draw_label_text {
         foreach my $line (@label_lines) {
             next LABEL_LINES if $line eq '';
             my $fontName = C4::Creators::PDF->Font($font);
+            $line = log2vis( $line );
             my $string_width = C4::Creators::PDF->StrWidth($line, $fontName, $self->{'font_size'});
             if ($self->{'justify'} eq 'R') {
                 $text_llx = $params{'llx'} + $self->{'width'} - ($self->{'left_text_margin'} + $string_width);

install_misc/debian.packages

@@ -107,6 +107,7 @@ libtest-mockmodule-perl		install
 libtest-strict-perl		install
 libtest-warn-perl		install
 libtest-yaml-valid-perl		install
+libtext-bidi-perl           install
 libtext-charwidth-perl	install
 libtext-csv-encoded-perl install
 libtext-csv-perl	install

install_misc/ubuntu.10.04.packages

@@ -134,6 +134,7 @@ libtest-mockmodule-perl		install
 libtest-strict-perl		install
 libtest-warn-perl		install
 libtest-yaml-valid-perl		install
+libtext-bidi-perl           install
 libtext-charwidth-perl			install
 libtext-csv-encoded-perl			install
 libtext-csv-perl			install

install_misc/ubuntu.12.04.packages

@@ -139,6 +139,7 @@ libtest-mockmodule-perl			install
 libtest-strict-perl			install
 libtest-warn-perl		install
 libtest-yaml-valid-perl		install
+libtext-bidi-perl           install
 libtext-charwidth-perl			install
 libtext-csv-encoded-perl			install
 libtext-csv-perl			install

install_misc/ubuntu.packages

@@ -139,6 +139,7 @@ libtest-mockmodule-perl			install
 libtest-strict-perl			install
 libtest-warn-perl		install
 libtest-yaml-valid-perl		install
+libtext-bidi-perl           install
 libtext-charwidth-perl			install
 libtext-csv-encoded-perl			install
 libtext-csv-perl			install