| 1 | #!/usr/bin/perl -w
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| 2 |
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| 3 | ###########################################################################
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| 4 | #
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| 5 | # green_bar.pl
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| 6 | # A component of the Greenstone digital library software
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| 7 | # from the New Zealand Digital Library Project at the
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| 8 | # University of Waikato, New Zealand.
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| 9 | #
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| 10 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 11 | #
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| 12 | # This program is free software; you can redistribute it and/or modify
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| 13 | # it under the terms of the GNU General Public License as published by
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| 14 | # the Free Software Foundation; either version 2 of the License, or
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| 15 | # (at your option) any later version.
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| 16 | #
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| 17 | # This program is distributed in the hope that it will be useful,
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| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | # GNU General Public License for more details.
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| 21 | #
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| 22 | # You should have received a copy of the GNU General Public License
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| 23 | # along with this program; if not, write to the Free Software
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| 24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | #
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| 26 | ###########################################################################
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| 27 |
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| 28 | # Modified by Rachid Ben Kaddour <[email protected]> for gimp1.2
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| 29 |
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| 30 | # green_bar.pl generates all the black on green gradient background
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| 31 | # images used by Greenstone.
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| 32 | # these are the icons described in macro files as:
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| 33 | # green version of nav_bar_button
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| 34 | # green_bar_left_aligned
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| 35 |
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| 36 | BEGIN {
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| 37 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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| 38 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
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| 39 | }
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| 40 |
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| 41 | use Gimp qw/:auto :DEFAULT/;
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| 42 | use parsargv;
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| 43 | use util;
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| 44 | use unicode;
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| 45 |
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| 46 | # set trace level to watch functions as they are executed
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| 47 | #Gimp::set_trace(TRACE_ALL);
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| 48 | #Gimp::set_trace(TRACE_CALL);
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| 49 |
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| 50 | my $gsdl_green = "#96c19b";
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| 51 | my $black = "#000000";
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| 52 |
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| 53 | my ($cfg_file, $width, $height, $text, $filename, $width_space,
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| 54 | $dont_center, $bgcolor, $fontcolor, $fontsize, $foundry, $fontname,
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| 55 | $fontweight, $fontslant, $fontwidth, $fontspacing, $fontregistry, $fontencoding, $image_dir);
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| 56 |
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| 57 | sub print_usage {
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| 58 | print STDERR "\n usage: $0 [options] macrofile\n\n";
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| 59 | print STDERR " options:\n";
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| 60 | print STDERR " -cfg_file file configuration file containing one or more\n";
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| 61 | print STDERR " sets of the following options - use to create\n";
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| 62 | print STDERR " batches of images\n";
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| 63 | print STDERR " -image_dir directory directory to create images in [`pwd`]\n";
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| 64 | print STDERR " this should be full path to existing directory\n";
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| 65 | print STDERR " -width number width of bar [87]\n";
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| 66 | print STDERR " -height number height of bar [17]\n";
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| 67 | print STDERR " -text string icon text\n";
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| 68 | print STDERR " -filename string filename of resulting image\n";
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| 69 | print STDERR " -width_space number width in pixels of blank space to leave at left\n";
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| 70 | print STDERR " and right edges of text [1]\n";
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| 71 | print STDERR " -dont_center don't center text horizontally\n";
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| 72 | print STDERR " -bgcolor hex_value background color of bar [$gsdl_green]\n";
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| 73 | print STDERR " -fontcolor hex_value text color [$black]\n";
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| 74 | print STDERR " -fontsize number font point size [17]\n";
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| 75 | print STDERR " -foundry string [*]\n";
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| 76 | print STDERR " -fontname string [lucida]\n";
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| 77 | print STDERR " -fontweight string [medium]\n";
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| 78 | print STDERR " -fontslant [r]\n";
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| 79 | print STDERR " -fontwidth [*]\n";
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| 80 | print STDERR " -fontspacing [*]\n";
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| 81 | print STDERR " -fontregistry [*]\n";
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| 82 | print STDERR " -fontencoding [*]\n\n";
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| 83 | }
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| 84 |
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| 85 | sub reset_options {
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| 86 | $image_dir = "./";
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| 87 | $width = 87;
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| 88 | $height = 17;
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| 89 | $text = "";
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| 90 | $filename = "";
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| 91 | $width_space = 1;
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| 92 | $dont_center = 0;
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| 93 | $bgcolor = $gsdl_green;
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| 94 | $fontcolor = $black;
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| 95 | $fontsize = 17;
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| 96 | $foundry = "*";
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| 97 | $fontname = "lucida";
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| 98 | $fontweight = "medium";
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| 99 | $fontslant = "r";
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| 100 | $fontwidth = "*";
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| 101 | $fontspacing = "*";
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| 102 | $fontregistry = "*";
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| 103 | $fontencoding = "*";
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| 104 | }
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| 105 |
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| 106 | sub gsdl_green_bar {
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| 107 |
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| 108 | if (!parsargv::parse(\@ARGV,
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| 109 | 'cfg_file/.*/', \$cfg_file,
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| 110 | 'image_dir/.*/./', \$image_dir,
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| 111 | 'width/^\d+$/87', \$width,
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| 112 | 'height/^\d+$/17', \$height,
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| 113 | 'text/.*/', \$text,
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| 114 | 'filename/.*', \$filename,
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| 115 | 'width_space/^\d+$/1', \$width_space,
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| 116 | 'dont_center', \$dont_center,
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| 117 | "bgcolor/#[0-9A-Fa-f]{6}/$gsdl_green", \$bgcolor,
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| 118 | "fontcolor/#[0-9A-Fa-f]{6}/$black", \$fontcolor,
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| 119 | 'fontsize/^\d+$/17', \$fontsize,
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| 120 | 'foundry/.*/*', \$foundry,
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| 121 | 'fontname/.*/lucida', \$fontname,
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| 122 | 'fontweight/.*/medium', \$fontweight,
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| 123 | 'fontslant/.*/r', \$fontslant,
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| 124 | 'fontwidth/.*/*', \$fontwidth,
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| 125 | 'fontregistry/.*/*', \$fontregistry,
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| 126 | 'fontencoding/.*/*', \$fontencoding,
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| 127 | 'fontspacing/.*/*', \$fontspacing)) {
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| 128 | &print_usage();
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| 129 | die "green_bar.pl: incorrect options\n";
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| 130 | }
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| 131 |
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| 132 | # will create wherever gimp was started up from if we don't do this
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| 133 | if ($image_dir eq "./") {
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| 134 | $image_dir = `pwd`;
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| 135 | chomp $image_dir;
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| 136 | }
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| 137 |
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| 138 | if ($cfg_file =~ /\w/) {
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| 139 |
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| 140 | open (CONF, $cfg_file) || die "couldn't open cfg_file $cfg_file\n";
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| 141 | while (1) {
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| 142 |
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| 143 | &reset_options ();
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| 144 |
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| 145 | # read image configuration entry
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| 146 | my $status = &read_config_entry (CONF);
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| 147 | if ($filename !~ /\w/) {
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| 148 | if ($status) {last;}
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| 149 | else {next;}
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| 150 | }
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| 151 |
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| 152 | &produce_image ();
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| 153 | if ($status) {last;}
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| 154 | }
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| 155 |
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| 156 | close CONF;
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| 157 |
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| 158 | } else {
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| 159 |
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| 160 | &produce_image ();
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| 161 |
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| 162 | }
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| 163 | }
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| 164 |
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| 165 | sub produce_image {
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| 166 |
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| 167 | # create image, set background color etc.
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| 168 | my ($image, $backlayer) = &create_image ();
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| 169 |
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| 170 | # set the text if there is any
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| 171 | if (length($text)) {
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| 172 |
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| 173 | my $textlayer = gimp_text ($image, $backlayer, 0, 0, $text, 0, 1,
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| 174 | $fontsize, PIXELS, $foundry, $fontname, $fontweight,
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| 175 | $fontslant, $fontwidth, $fontspacing, $fontregistry, $fontencoding);
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| 176 |
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| 177 |
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| 178 | my $textwidth = gimp_drawable_width($textlayer);
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| 179 | my $textheight = gimp_drawable_height($textlayer);
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| 180 |
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| 181 | # check that text fits within image
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| 182 | if ($textheight > $height) {
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| 183 | die "'$text' at fontsize of $fontsize pixels does not fit within image\n" .
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| 184 | "$height pixels high. Decrease fontsize or increase image height\n";
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| 185 | }
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| 186 |
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| 187 | my $spacers = $width_space * 2;
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| 188 |
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| 189 | if ($textwidth > $width) {
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| 190 |
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| 191 | print STDERR "WARNING (green_bar.pl): '$text' does not fit within $width pixel fixed width ";
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| 192 | print STDERR "image. Image width was increased to ",$textwidth + $spacers, " pixels\n";
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| 193 |
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| 194 | $width = $textwidth + $spacers;
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| 195 |
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| 196 | # recreate image in new size
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| 197 | ($image, $backlayer) = &create_image ();
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| 198 | $textlayer = gimp_text ($image, $backlayer, 0, 0, $text, 0, 1,
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| 199 | $fontsize, PIXELS, $foundry, $fontname, $fontweight,
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| 200 | $fontslant, $fontwidth, $fontspacing, $fontregistry, $fontencoding);
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| 201 |
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| 202 | }
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| 203 |
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| 204 | my $y_offset = ($height-$textheight)-int($fontsize/5);
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| 205 |
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| 206 | # my $halfdescenders = "";
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| 207 | # russian half descenders (KOI8-R)
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| 208 | # $halfdescenders .= chr(195) . chr(253); # Checked
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| 209 | # $halfdescenders .= chr(196) . chr(198) . chr(221) . chr(227) . chr(228); # Unchecked
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| 210 |
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| 211 | # if ($text =~ /[$halfdescenders]/) {
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| 212 | # half descenders - put text at fontsize/10 pixels above bottom
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| 213 | # $y_offset = ($height-$textheight)-int($fontsize/10);
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| 214 | # }
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| 215 |
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| 216 | my $descenders = "";
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| 217 | # russian descenders (KOI8-R)
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| 218 | # $descenders .= chr(210) . chr(213);
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| 219 |
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| 220 | if ($text =~ /[gjpqyJ$descenders]/) { ## capital J is a descender in lucida font
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| 221 | # descenders - put text at bottom of image, otherwise
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| 222 | # go for fontsize/5 pixels above bottom. This is kind of hacky
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| 223 | # and may need some playing with for different fonts/fontsizes
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| 224 | $y_offset = $height-$textheight;
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| 225 | }
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| 226 |
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| 227 | if ($dont_center) {
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| 228 | # don't center text horizontally (start it width_space pixels from left edge)
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| 229 | my $x_offset = $width_space;
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| 230 | gimp_layer_set_offsets ($textlayer, $x_offset, $y_offset);
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| 231 | } else {
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| 232 | gimp_layer_set_offsets ($textlayer, ($width-$textwidth)/2, $y_offset);
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| 233 | }
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| 234 | }
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| 235 |
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| 236 | # flatten the image
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| 237 | my $finishedlayer = gimp_image_flatten ($image);
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| 238 |
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| 239 | # make indexed colour
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| 240 | gimp_convert_indexed ($image, NO_DITHER, MAKE_PALETTE, 256, 0, 1,"");
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| 241 |
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| 242 | # save image
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| 243 | $filename = &util::filename_cat ($image_dir, $filename);
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| 244 |
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| 245 | gimp_file_save (RUN_NONINTERACTIVE, $image, $finishedlayer, $filename, $filename);
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| 246 |
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| 247 | }
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| 248 |
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| 249 | sub create_image {
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| 250 | # create the image
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| 251 | my $image = gimp_image_new ($width, $height, RGB_IMAGE);
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| 252 |
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| 253 | # background layer
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| 254 | my $backlayer = gimp_layer_new ($image, $width, $height, RGB_IMAGE,
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| 255 | "BGLayer", 100, NORMAL_MODE);
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| 256 |
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| 257 | # add the background layer
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| 258 | gimp_image_add_layer ($image, $backlayer, 0);
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| 259 |
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| 260 | # set colour of background
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| 261 | gimp_palette_set_foreground ($bgcolor);
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| 262 |
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| 263 | # clear the background
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| 264 | gimp_selection_all ($image);
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| 265 | gimp_edit_clear ($backlayer);
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| 266 | gimp_selection_none ($image);
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| 267 |
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| 268 | # create the gradient background
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| 269 | gimp_blend ($backlayer, 0, NORMAL_MODE, LINEAR, 70, 0, REPEAT_NONE, 0, 0, 0, 5, $height-3, 5, 0);
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| 270 |
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| 271 | # set colour of text
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| 272 | gimp_palette_set_foreground ($fontcolor);
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| 273 |
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| 274 | return ($image, $backlayer);
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| 275 | }
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| 276 |
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| 277 | # returns 1 if this is the last entry,
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| 278 | sub read_config_entry {
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| 279 | my ($handle) = @_;
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| 280 |
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| 281 | my $line = "";
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| 282 | while (defined ($line = <$handle>)) {
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| 283 | next unless $line =~ /\w/;
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| 284 | my @line = ();
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| 285 | if ($line =~ /^\-+/) {return 0;}
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| 286 | $line =~ s/^\#.*$//; # remove comments
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| 287 | $line =~ s/\cM|\cJ//g; # remove end-of-line characters
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| 288 | $line =~ s/^\s+//; # remove initial white space
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| 289 | while ($line =~ s/\s*(\"[^\"]*\"|\'[^\']*\'|\S+)\s*//) {
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| 290 | if (defined $1) {
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| 291 | # remove any enclosing quotes
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| 292 | my $entry = $1;
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| 293 | $entry =~ s/^([\"\'])(.*)\1$/$2/;
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| 294 |
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| 295 | # substitute any environment variables
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| 296 | $entry =~ s/\$(\w+)/$ENV{$1}/g;
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| 297 | $entry =~ s/\$\{(\w+)\}/$ENV{$1}/g;
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| 298 |
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| 299 | push (@line, $entry);
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| 300 | } else {
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| 301 | push (@line, "");
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| 302 | }
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| 303 | }
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| 304 | if (scalar (@line) == 2 && defined ${$line[0]}) {
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| 305 | ${$line[0]} = $line[1];
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| 306 | }
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| 307 | }
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| 308 | return 1;
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| 309 | }
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| 310 |
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| 311 | sub query {
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| 312 |
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| 313 | gimp_install_procedure("gsdl_green_bar", "create green bar icons for gsdl",
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| 314 | "", "Stefan Boddie", "Stefan Boddie", "2000-03-10",
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| 315 | "<Toolbox>/Xtns/gsdl_green_bar", "*", &PROC_EXTENSION,
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| 316 | [[PARAM_INT32, "run_mode", "Interactive, [non-interactive]"]], []);
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| 317 | }
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| 318 |
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| 319 | Gimp::on_net { gsdl_green_bar; };
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| 320 | exit main;
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