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 | # title_icon.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 | # title_icon.pl generates all the green_title type icons and
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29 | # collection icons for Greenstone
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30 |
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31 | BEGIN {
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32 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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33 | unshift (@INC, "$ENV{'GSDLHOME'}/perllib");
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34 | }
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35 |
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36 | use Gimp;
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37 | use parsargv;
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38 | use util;
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39 |
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40 | # set trace level to watch functions as they are executed
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41 | #Gimp::set_trace(TRACE_ALL);
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42 | #Gimp::set_trace(TRACE_CALL);
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43 |
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44 | my $gsdl_green = "#96c19b";
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45 | my $black = "#000000";
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46 |
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47 |
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48 | local ($cfg_file, $size, $imagefile, $width, $height, $imageheight, $stripecolor, $stripewidth,
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49 | $stripe_alignment, $i_transparency, $text, $text_alignment, $filename, $textspace_x,
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50 | $textspace_y, $bgcolor, $fontcolor, $fontsize, $minfontsize, $fontname,
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51 | $fontweight, $fontslant, $fontwidth, $fontspacing, $image_dir, $dont_wrap);
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52 |
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53 | sub print_usage {
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54 | print STDERR "\n usage: $0 [options] macrofile\n\n";
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55 | print STDERR " options:\n";
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56 | print STDERR " -cfg_file file configuration file containing one or more\n";
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57 | print STDERR " sets of the following options - use to create\n";
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58 | print STDERR " batches of images\n";
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59 | print STDERR " -size number the overall size ratio of the image (i.e. a size\n";
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60 | print STDERR " of 2 will create an image twice the default size)\n";
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61 | print STDERR " -image_dir directory directory to create images in [`pwd`]\n";
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62 | print STDERR " this should be full path to existing directory\n";
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63 | print STDERR " -imagefile filename of image to embed within new icon\n";
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64 | print STDERR " -width number width of icon [150]\n";
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65 | print STDERR " -height number height of icon [44]\n";
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66 | print STDERR " -imageheight number this is the height of the image if the image contains\n";
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67 | print STDERR " an image (like collection icons) [110]\n";
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68 | print STDERR " -stripecolor hex_value color of vertical stripe [$gsdl_green]\n";
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69 | print STDERR " -stripewidth width of vertical stripe [40]\n";
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70 | print STDERR " -stripe_alignment alignment of vertical stripe (left or right) [left]\n";
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71 | print STDERR " -i_transparency number transparency of image within icon (0 > transparent > 100) [60]\n";
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72 | print STDERR " -text string image text\n";
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73 | print STDERR " -text_alignment alignment of text (left or right) [left]\n";
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74 | print STDERR " -filename string filename of resulting image\n";
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75 | print STDERR " -textspace_x number space in pixels between left/right edge of image and\n";
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76 | print STDERR " left/right edge of text [3]\n";
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77 | print STDERR " -textspace_y number space in pixels between top of image and top of\n";
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78 | print STDERR " text [3]\n";
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79 | print STDERR " -bgcolor hex_value background color of icon [$gsdl_green]\n";
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80 | print STDERR " -fontcolor hex_value text color [$black]\n";
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81 | print STDERR " -fontsize number font point size [17]\n";
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82 | print STDERR " -minfontsize number minimum point size font will be reduced to fit image [10]\n";
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83 | print STDERR " -fontname string [lucida]\n";
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84 | print STDERR " -fontweight string [medium]\n";
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85 | print STDERR " -fontslant [r]\n";
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86 | print STDERR " -fontwidth [*]\n";
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87 | print STDERR " -fontspacing [*]\n";
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88 | print STDERR " -dont_wrap don't attempt to wrap text\n\n";
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89 | }
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90 |
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91 | sub reset_options {
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92 | $image_dir = "./";
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93 | $imagefile = "";
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94 | $width = int (150 * $size);
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95 | $height = int (44 * $size);
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96 | $imageheight = int (110 * $size);
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97 | $stripecolor = $gsdl_green;
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98 | $stripewidth = int (40 * $size);
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99 | $stripe_alignment = "left";
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100 | $i_transparency = 60;
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101 | $text = "";
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102 | $text_alignment = "left";
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103 | $filename = "";
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104 | $textspace_x = int (3 * $size);
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105 | $textspace_y = int (3 * $size);
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106 | $bgcolor = $gsdl_green;
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107 | $fontcolor = $black;
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108 | $fontsize = int (17 * $size);
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109 | $minfontsize = int (10 * $size);
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110 | $fontname = "lucida";
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111 | $fontweight = "medium";
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112 | $fontslant = "r";
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113 | $fontwidth = "*";
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114 | $fontspacing = "*";
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115 | }
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116 |
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117 | sub gsdl_title_icon {
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118 |
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119 | if (!parsargv::parse(\@ARGV,
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120 | 'cfg_file/.*/', \$cfg_file,
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121 | 'size/\d+/1', \$size,
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122 | 'image_dir/.*/./', \$image_dir,
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123 | 'imagefile/.*/', \$imagefile,
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124 | 'width/^\d+$/150', \$width,
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125 | 'height/^\d+$/44', \$height,
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126 | 'imageheight/^\d+$/110', \$imageheight,
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127 | "stripecolor/#[0-9A-Fa-f]{6}/$gsdl_green", \$stripecolor,
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128 | 'stripewidth/^\d+$/40', \$stripewidth,
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129 | 'stripe_alignment/^(left|right)$/left', \$stripe_alignment,
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130 | 'i_transparency/^\d+$/60', \$i_transparency,
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131 | 'text/.*/', \$text,
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132 | 'text_alignment/^(left|right)$/left', \$text_alignment,
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133 | 'filename/.*', \$filename,
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134 | 'textspace_x/^\d+$/3', \$textspace_x,
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135 | 'textspace_y/^\d+$/3', \$textspace_y,
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136 | "bgcolor/#[0-9A-Fa-f]{6}/$gsdl_green", \$bgcolor,
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137 | "fontcolor/#[0-9A-Fa-f]{6}/$black", \$fontcolor,
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138 | 'fontsize/^\d+$/17', \$fontsize,
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139 | 'minfontsize/^\d+$/10', \$minfontsize,
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140 | 'fontname/.*/lucida', \$fontname,
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141 | 'fontweight/.*/medium', \$fontweight,
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142 | 'fontslant/.*/r', \$fontslant,
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143 | 'fontwidth/.*/*', \$fontwidth,
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144 | 'fontspacing/.*/*', \$fontspacing,
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145 | 'dont_wrap', \$dont_wrap)) {
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146 | &print_usage();
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147 | die "title_icon.pl: incorrect options\n";
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148 | }
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149 |
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150 | # will create wherever gimp was started up from if we don't do this
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151 | if ($image_dir eq "./") {
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152 | $image_dir = `pwd`;
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153 | chomp $image_dir;
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154 | }
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155 |
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156 | if ($cfg_file =~ /\w/) {
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157 |
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158 | open (CONF, $cfg_file) || die "couldn't open cfg_file $cfg_file\n";
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159 | while (1) {
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160 |
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161 | &reset_options ();
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162 |
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163 | # read image configuration entry
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164 | my $status = &read_config_entry (CONF);
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165 | if ($filename !~ /\w/) {
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166 | if ($status) {last;}
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167 | else {next;}
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168 | }
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169 |
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170 | &produce_image ();
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171 | if ($status) {last;}
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172 | }
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173 |
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174 | close CONF;
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175 |
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176 | } else {
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177 |
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178 | &produce_image ();
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179 |
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180 | }
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181 | }
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182 |
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183 | sub produce_image {
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184 |
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185 | &adjust_args ();
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186 | &wrap_text () unless $dont_wrap;
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187 |
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188 | my $use_image = 0;
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189 | if ($imagefile =~ /\w/) {
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190 | if (!-r $imagefile) {
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191 | print STDERR "WARNING (title_icon.pl): imagefile '$imagefile cannot be ";
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192 | print STDERR "read - $filename will be created without the use of an image file\n";
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193 | } else {
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194 | $use_image = 1;
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195 | $height = $imageheight;
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196 | }
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197 | }
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198 |
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199 | # create the image
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200 | my $image = gimp_image_new ($width, $height, RGB_IMAGE);
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201 |
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202 | # background layer
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203 | my $backlayer = gimp_layer_new ($image, $width, $height, RGB_IMAGE,
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204 | "BGLayer", 100, NORMAL_MODE);
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205 |
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206 | # add the background layer
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207 | gimp_image_add_layer ($image, $backlayer, 0);
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208 |
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209 | # set colour of stripe
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210 | gimp_palette_set_foreground ($stripecolor);
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211 |
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212 | # clear the background
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213 | gimp_selection_all ($image);
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214 | gimp_edit_clear ($image, $backlayer);
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215 | gimp_selection_none ($image);
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216 |
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217 | # fill in stripe
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218 | if ($stripe_alignment eq "left") {
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219 | gimp_rect_select ($image, 0, 0, $stripewidth, $height, 0, 0, 0);
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220 | } else {
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221 | gimp_rect_select ($image, $width-$stripewidth, 0, $stripewidth, $height, 0, 0, 0);
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222 | }
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223 | gimp_bucket_fill ($image, $backlayer, FG_BUCKET_FILL, NORMAL_MODE, 100, 0, 1, 0, 0);
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224 | gimp_selection_none ($image);
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225 |
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226 | # get image file (image goes on opposite side to stripe)
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227 | if ($use_image) {
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228 | my $rimage = gimp_file_load (RUN_NONINTERACTIVE, $imagefile, $imagefile);
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229 | my $rdraw = gimp_image_active_drawable ($rimage);
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230 | gimp_scale ($rimage, $rdraw, 1, 0, 0, $width-$stripewidth, $height);
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231 | gimp_edit_copy ($rimage, $rdraw);
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232 |
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233 | my $imagelayer = gimp_layer_new ($image, $width, $height, RGB_IMAGE,
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234 | "ImageLayer", $i_transparency, NORMAL_MODE);
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235 |
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236 | gimp_image_add_layer ($image, $imagelayer, 0);
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237 |
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238 | # clear the new layer
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239 | gimp_selection_all ($image);
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240 | gimp_edit_clear ($image, $imagelayer);
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241 | gimp_selection_none ($image);
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242 |
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243 | my $flayer = gimp_edit_paste ($image, $imagelayer, 1);
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244 | if ($stripe_alignment eq "left") {
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245 | gimp_layer_set_offsets($flayer, $stripewidth, 0);
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246 | gimp_layer_set_offsets($imagelayer, $stripewidth, 0);
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247 | } else {
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248 | gimp_layer_set_offsets($flayer, 0, 0);
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249 | gimp_layer_set_offsets($imagelayer, 0, 0);
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250 | }
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251 | }
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252 |
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253 | # set colour of text
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254 | gimp_palette_set_foreground ($fontcolor);
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255 |
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256 | # set the text if there is any
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257 | my ($textlayer, $textheight, $textwidth);
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258 | my $fsize = $fontsize;
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259 | if (length($text)) {
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260 | $text =~ s/\\n/\n/gi;
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261 | while (1) {
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262 | $textlayer = gimp_text ($image, $backlayer, 0, 0, $text, 0, 1, $fsize,
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263 | PIXELS, "*", $fontname, $fontweight, $fontslant,
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264 | $fontwidth, $fontspacing);
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265 |
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266 | # check that text fits within image
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267 | $textwidth = gimp_drawable_width($textlayer);
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268 | $textheight = gimp_drawable_height($textlayer);
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269 | if ((($textwidth + $textspace_x) > $width) ||
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270 | (($textheight + $textspace_y) > $height)) {
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271 | if ($fsize < $minfontsize) {
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272 | die "Error (title_icon.pl): text '$text' doesn't fit on ${width}x${height} image " .
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273 | "(minimum font size tried: $minfontsize\n";
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274 | } else {
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275 | gimp_selection_all ($image);
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276 | gimp_edit_clear ($image, $textlayer);
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277 | gimp_selection_none ($image);
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278 | $fsize --;
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279 | print STDERR "WARNING (title_icon.pl): '$text' doesn't fit: reducing font size to $fsize\n";
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280 | }
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281 | } else {
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282 | last;
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283 | }
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284 | }
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285 |
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286 | # align text
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287 | if ($text_alignment eq "left") {
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288 | gimp_layer_set_offsets ($textlayer, $textspace_x, $textspace_y);
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289 | } else {
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290 | gimp_layer_set_offsets ($textlayer, ($width-$textwidth)-$textspace_x, $textspace_y);
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291 | }
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292 | }
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293 |
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294 | # flatten the image
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295 | my $finishedlayer = gimp_image_flatten ($image);
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296 |
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297 | if ($filename =~ /\.gif$/i) {
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298 | # make indexed colour (may need to do this for
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299 | # other formats as well as gif)
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300 | gimp_convert_indexed ($image, 0, 256);
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301 | }
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302 |
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303 | # save image
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304 | my $filename = &util::filename_cat ($image_dir, $filename);
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305 | if ($filename =~ /\.jpe?g$/i) {
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306 | # gimp_file_save doesn't appear to work properly for jpegs
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307 | file_jpeg_save (RUN_NONINTERACTIVE, $image, $finishedlayer,
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308 | $filename, $filename, 0.8, 0, 1);
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309 | } else {
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310 | gimp_file_save (RUN_NONINTERACTIVE, $image, $finishedlayer,
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311 | $filename, $filename);
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312 | }
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313 | }
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314 |
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315 | # returns 1 if this is the last entry,
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316 | sub read_config_entry {
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317 | my ($handle) = @_;
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318 |
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319 | my $line = "";
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320 | while (defined ($line = <$handle>)) {
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321 | next unless $line =~ /\w/;
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322 | my @line = ();
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323 | if ($line =~ /^\-+/) {return 0;}
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324 | $line =~ s/^\#.*$//; # remove comments
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325 | $line =~ s/\cM|\cJ//g; # remove end-of-line characters
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326 | $line =~ s/^\s+//; # remove initial white space
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327 | while ($line =~ s/\s*(\"[^\"]*\"|\'[^\']*\'|\S+)\s*//) {
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328 | if (defined $1) {
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329 | # remove any enclosing quotes
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330 | my $entry = $1;
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331 | $entry =~ s/^([\"\'])(.*)\1$/$2/;
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332 |
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333 | # substitute any environment variables
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334 | $entry =~ s/\$(\w+)/$ENV{$1}/g;
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335 | $entry =~ s/\$\{(\w+)\}/$ENV{$1}/g;
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336 |
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337 | push (@line, $entry);
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338 | } else {
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339 | push (@line, "");
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340 | }
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341 | }
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342 | if (scalar (@line) == 2 && defined ${$line[0]}) {
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343 | ${$line[0]} = $line[1];
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344 | }
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345 | }
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346 | return 1;
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347 | }
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348 |
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349 | # adjust arguments that are effected by the size argument
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350 | sub adjust_args {
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351 |
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352 | if ($size != 1) {
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353 | my @size_args = ('width', 'height', 'imageheight', 'stripewidth',
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354 | 'textspace_x', 'textspace_y', 'fontsize', 'minfontsize');
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355 | foreach $arg (@size_args) {
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356 | $$arg = int ($$arg * $size);
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357 | }
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358 | }
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359 | }
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360 |
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361 | sub wrap_text {
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362 |
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363 | # don't wrap text if it already contains carriage returns
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364 | return if $text =~ /\n/;
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365 |
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366 | # the following assumes that all words are less than $wrap_length long
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367 | my $wrap_length = 14;
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368 |
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369 | my $new_text = "";
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370 | while (length ($text) >= $wrap_length) {
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371 | my $line = substr ($text, 0, $wrap_length);
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372 | $text =~ s/^$line//;
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373 | $line =~ s/\s([^\s]*)$/\n/;
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374 | $text = $1 . $text;
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375 | $new_text .= $line;
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376 | }
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377 | $new_text .= $text;
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378 | $text = $new_text;
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379 | }
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380 |
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381 | sub query {
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382 |
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383 | gimp_install_procedure("gsdl_title_icon", "create title icons for gsdl",
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384 | "", "Stefan Boddie", "Stefan Boddie", "2000-03-10",
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385 | "<Toolbox>/Xtns/gsdl_title_icon", "*", &PROC_EXTENSION,
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386 | [[PARAM_INT32, "run_mode", "Interactive, [non-interactive]"]], []);
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387 | }
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388 |
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389 | sub net {
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390 | gsdl_title_icon;
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391 | }
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392 |
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393 | exit main;
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394 |
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