C4/Barcodes/PrinterConfig.pm

   1 package C4::Barcodes::PrinterConfig;
   2
   3 # This file is part of Koha.
   4 #
   5 # Koha is free software; you can redistribute it and/or modify it under the
   6 # terms of the GNU General Public License as published by the Free Software
   7 # Foundation; either version 2 of the License, or (at your option) any later
   8 # version.
   9 #
  10 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  11 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  12 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along with
  15 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  16 # Suite 330, Boston, MA  02111-1307 USA
  17
  18 use strict;
  19 #use warnings; FIXME - Bug 2505
  20 use vars qw($VERSION @EXPORT);
  21
  22 use PDF::API2;
  23 use PDF::API2::Page;
  24
  25 BEGIN {
  26         # set the version for version checking
  27     $VERSION = 3.07.00.049;
  28         require Exporter;
  29         @EXPORT = qw(&labelsPage &getLabelPosition setPositionsForX setPositionsForY);
  30 }
  31
  32 =head1 NAME
  33
  34 C4::Barcodes::PrinterConfig - Koha module dealing with labels in a PDF.
  35
  36 =head1 SYNOPSIS
  37
  38 use C4::Barcodes::PrinterConfig;
  39
  40 =head1 DESCRIPTION
  41
  42 This package is used to deal with labels in a pdf file. Giving some parameters,
  43 this package contains several functions to handle every label considering the
  44 environment of the pdf file.
  45
  46 =head1 FUNCTIONS
  47
  48 =head2 my @positionsForX;
  49
  50 Takes all the X positions of the pdf file.
  51
  52 =head2 my @positionsForY;
  53
  54 Takes all the Y positions of the pdf file.
  55
  56 =head2 my $firstLabel = 1;
  57
  58 Test if the label passed as a parameter is the first label to be printed into the pdf file.
  59
  60 =head2 setPositionsForX
  61
  62   C4::Barcodes::PrinterConfig::setPositionsForX($marginLeft, $labelWidth, $columns, $pageType);
  63
  64 Calculate and stores all the X positions across the pdf page.
  65
  66 C<$marginLeft> Indicates how much left margin do you want in your page type.
  67
  68 C<$labelWidth> Indicates the width of the label that you are going to use.
  69
  70 C<$columns> Indicates how many columns do you want in your page type.
  71
  72 C<$pageType> Page type to print (eg: a4, legal, etc).
  73
  74 =cut
  75
  76 # Globals used by the functions
  77 my @positionsForX;
  78 my @positionsForY;
  79 my $firstLabel = 1;
  80
  81 sub setPositionsForX {
  82         my ($marginLeft, $labelWidth, $columns, $pageType) = @_;
  83         my $defaultDpi = 72/25.4; # By default we know 25.4 mm -> 1 inch -> 72 dots per inch
  84         my $whereToStart = ($marginLeft + ($labelWidth/2));
  85         my $firstLabel = $whereToStart*$defaultDpi;
  86         my $spaceBetweenLabels = $labelWidth*$defaultDpi;
  87         my @positions;
  88         for (my $i = 0; $i < $columns ; $i++) {
  89                 push @positions, ($firstLabel+($spaceBetweenLabels*$i));
  90         }
  91         @positionsForX = @positions;
  92 }
  93
  94 =head2 setPositionsForY
  95
  96   C4::Barcodes::PrinterConfig::setPositionsForY($marginBottom, $labelHeigth, $rows, $pageType);
  97
  98 Calculate and stores all tha Y positions across the pdf page.
  99
 100 C<$marginBottom> Indicates how much bottom margin do you want in your page type.
 101
 102 C<$labelHeigth> Indicates the height of the label that you are going to use.
 103
 104 C<$rows> Indicates how many rows do you want in your page type.
 105
 106 C<$pageType> Page type to print (eg: a4, legal, etc).
 107
 108 =cut
 109
 110 sub setPositionsForY {
 111         my ($marginBottom, $labelHeigth, $rows, $pageType) = @_;
 112         my $defaultDpi = 72/25.4; # By default we know 25.4 mm -> 1 inch -> 72 dots per inch
 113         my $whereToStart = ($marginBottom + ($labelHeigth/2));
 114         my $firstLabel = $whereToStart*$defaultDpi;
 115         my $spaceBetweenLabels = $labelHeigth*$defaultDpi;
 116         my @positions;
 117         for (my $i = 0; $i < $rows; $i++) {
 118                 unshift @positions, ($firstLabel+($spaceBetweenLabels*$i));
 119         }
 120         @positionsForY = @positions;
 121 }
 122
 123 =head2 getLabelPosition
 124
 125   (my $x, my $y, $pdfObject, $pageObject, $gfxObject, $textObject, $coreObject, $labelPosition) =
 126      C4::Barcodes::PrinterConfig::getLabelPosition($labelPosition, $pdfObject, $page, $gfx, $text, $fontObject, $pageType);
 127
 128 Return the (x,y) position of the label that you are going to print considering the environment.
 129
 130 C<$labelPosition> Indicates which label positions do you want to place by x and y coordinates.
 131
 132 C<$pdfObject> The PDF object in use.
 133
 134 C<$page> The page in use.
 135
 136 C<$gfx> The gfx resource to handle with barcodes objects.
 137
 138 C<$text> The text resource to handle with text.
 139
 140 C<$fontObject> The font object
 141
 142 C<$pageType> Page type to print (eg: a4, legal, etc).
 143
 144 =cut
 145
 146 sub getLabelPosition {
 147         my ($labelNum, $pdf, $page, $gfxObject, $textObject, $fontObject, $pageType) = @_;
 148         my $indexX = $labelNum % @positionsForX;
 149         my $indexY = int($labelNum / @positionsForX);
 150         # Calculates the next label position and return that label number
 151         my $nextIndexX = $labelNum % @positionsForX;
 152         my $nextIndexY = $labelNum % @positionsForY;
 153         if ($firstLabel) {
 154           $page = $pdf->page;
 155           $page->mediabox($pageType);
 156           $gfxObject = $page->gfx;
 157           $textObject = $page->text;
 158           $textObject->font($fontObject, 7);
 159                   $firstLabel = 0;
 160         } elsif (($nextIndexX == 0) && ($nextIndexY == 0)) {
 161           $page = $pdf->page;
 162           $page->mediabox($pageType);
 163           $gfxObject = $page->gfx;
 164           $textObject = $page->text;
 165           $textObject->font($fontObject, 7);
 166         }
 167         $labelNum = $labelNum + 1;
 168         if ($labelNum == (@positionsForX*@positionsForY)) {
 169                 $labelNum = 0;
 170         }
 171         return ($positionsForX[$indexX], $positionsForY[$indexY], $pdf, $page, $gfxObject, $textObject, $fontObject, $labelNum);
 172 }
 173
 174 =head2 labelsPage
 175
 176   my @labelTable = C4::Barcodes::PrinterConfig::labelsPage($rows, $columns);
 177
 178 This function will help you to build the labels panel, where you can choose
 179 wich label position do you want to start the printer process.
 180
 181 C<$rows> Indicates how many rows do you want in your page type.
 182
 183 C<$columns> Indicates how many rows do you want in your page type.
 184
 185 =cut
 186
 187 sub labelsPage{
 188         my ($rows, $columns) = @_;
 189         my @pageType;
 190         my $tagname = 0;
 191         my $labelname = 1;
 192         my $check;
 193         for (my $i = 1; $i <= $rows; $i++) {
 194                 my @column;
 195                 for (my $j = 1; $j <= $columns; $j++) {
 196                         my %cell;
 197                         if ($tagname == 0) {
 198                                 $check = 'checked';
 199                         } else {
 200                                 $check = '';
 201                         }
 202                         %cell = (check => $check,
 203                                          tagname => $tagname,
 204                                  labelname => $labelname);
 205                         $tagname = $tagname + 1;
 206                         $labelname = $labelname + 1;
 207                         push @column, \%cell;
 208                 }
 209                 my %columns = (columns => \@column);
 210                 push @pageType, \%columns;
 211         }
 212         return @pageType;
 213 }
 214
 215 1;
 216
 217 __END__
 218
 219 =head1 AUTHOR
 220
 221 Koha Physics Library UNLP <matias_veleda@hotmail.com>
 222
 223 =cut