/usr/share/perl5/IrcMarkers/Map.pm is in ircmarkers 0.14-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This file originated from the mapmarkers distribution:
#
# MapMarkers, perl modules to create maps with markers.
# Copyright (C) 2002-2003 Guillaume Leclanche (Mo-Ize) <mo-ize@nul-en.info>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
package IrcMarkers::Map;
use strict;
use warnings;
use GD;
use IPC::Open2;
# Some file-global vars
my $pi = 3.1415926535898;
my $degtorad = 0.017453292519943;
my $radtodeg = 57.295779513082;
# create 24bit images
GD::Image->trueColor(1);
# Class method, creates a new map
sub new {
my($class, $config) = @_;
# open input map
my $file = $config->{read} || die "no file to read from";
$file =~ /\.([^.]+)$/;
my $type = lc $1;
die "File not found: $file" unless -f $file;
if ($type eq "gd" or $type eq "gd1") {
$config->{IMAGE} = GD::Image->newFromGd($file);
} elsif ($type eq "gd2") {
$config->{IMAGE} = GD::Image->newFromGd2($file);
} elsif ($type eq "gif") {
$config->{IMAGE} = GD::Image->newFromGif($file);
} elsif ($type eq "jpg" or $type eq "jpeg") {
$config->{IMAGE} = GD::Image->newFromJpeg($file);
} elsif ($type eq "png") {
$config->{IMAGE} = GD::Image->newFromPng($file);
} elsif ($type eq "xbm") {
$config->{IMAGE} = GD::Image->newFromXbm($file);
} elsif ($type eq "xpm") {
$config->{IMAGE} = GD::Image->newFromXpm($file);
} else {
die "Unsupported input image format $type";
}
die "Error while reading $file: $!" unless $config->{IMAGE}; # we *should* have undef here on error, but apparently haven't?!
# Let's get pixel width and height of the map
($config->{w}, $config->{h}) = $config->{IMAGE}->getBounds();
# check coordinates
die "western latitude greater than eastern" if $config->{west} >= $config->{east};
die "latitude range greater than 360 degrees" if $config->{east} - $config->{west} > 360;
die "southern longitude greater than northern" if $config->{south} >= $config->{north};
die "longitude range greater than 180 degrees" if $config->{north} - $config->{south} > 180;
# handle view_*
if ($config->{view_west} or $config->{view_south} or $config->{view_width} or $config->{view_height}) {
$config->{view_west} = $config->{west} unless defined $config->{view_west};
$config->{view_east} = $config->{east} unless defined $config->{view_east};
$config->{view_north} = $config->{north} unless defined $config->{view_north};
$config->{view_south} = $config->{south} unless defined $config->{view_south};
die "view_west is outside of map" if $config->{view_west} < $config->{west};
die "view_east is outside of map" if $config->{view_east} > $config->{east};
die "view_south is outside of map" if $config->{view_south} < $config->{south};
die "view_north is outside of map" if $config->{view_north} > $config->{north};
my $w = $config->{w} * ($config->{view_east} - $config->{view_west}) / ($config->{east} - $config->{west});
my $h = $config->{h} * ($config->{view_north} - $config->{view_south}) / ($config->{north} - $config->{south});
if($config->{view_width}) { # scale image
if($config->{view_height}) { # don't keep aspect ratio if user requests otherwise
($w, $h) = ($config->{view_width}, $config->{view_height});
} else {
($w, $h) = ($config->{view_width}, $h * ($config->{view_width} / $w));
}
} else {
if($config->{view_height}) {
($w, $h) = ($w * ($config->{view_height} / $h), $config->{view_height});
}
}
my $image = new GD::Image($w, $h);
$image->copyResampled($config->{IMAGE}, 0, 0,
($config->{view_west} - $config->{west}) / ($config->{east} - $config->{west}) * $config->{w},
($config->{view_north} - $config->{north}) / ($config->{south} - $config->{north}) * $config->{h},
$w, $h,
$config->{w} * ($config->{view_east} - $config->{view_west}) / ($config->{east} - $config->{west}),
$config->{h} * ($config->{view_north} - $config->{view_south}) / ($config->{north} - $config->{south})
);
($config->{west}, $config->{east}, $config->{south}, $config->{north}) =
($config->{view_west}, $config->{view_east}, $config->{view_south}, $config->{view_north});
undef $config->{IMAGE}; # free old image
$config->{IMAGE} = $image;
($config->{w}, $config->{h}) = $config->{IMAGE}->getBounds();
}
# handle projection system
if ($config->{projection} eq 'mercator') {
# degree per pixel RESolution
$config->{xres} = ($config->{east} - $config->{west}) / $config->{w};
$config->{yres} = ($config->{north} - $config->{south}) / $config->{h};
} elsif ($config->{projection} eq 'sinusoidal') {
die "center_lon must be defined for sinusoidal maps" unless defined $config->{center_lon};
# These 2 are not in pixels, but in absolute coordinates. To get pixels, they should be multiplied by $xres.
$config->{Xleft} = ($config->{west} - $config->{center_lon}) * cos($config->{north} * $degtorad);
$config->{Xright} = ($config->{east} - $config->{center_lon}) * cos($config->{south} * $degtorad);
# number of unitary graduation / pixel for x (RESolution)
$config->{xres} = ($config->{Xright} - $config->{Xleft}) / $config->{w};
# number of degrees / pixel for y
$config->{yres} = ($config->{north} - $config->{south}) / $config->{h};
} else {
die("ERROR: $config->{projection}: This projection system is not supported yet.");
}
$config->{LABELS} = [];
bless $config, $class;
}
sub coord2pixel {
my $config = shift;
my ($lat, $lon) = @_;
my($x, $y, $X0);
my $vis = 1;
if ($config->{projection} eq 'mercator') {
# pixel values, sprintf rounds to nearest
$x = sprintf("%d", ($lon - $config->{west}) / $config->{xres});
$y = sprintf("%d", ($config->{north} - $lat) / $config->{yres});
$vis = 0 if ($lon > $config->{east} or $lon < $config->{west} or $lat > $config->{north} or $lat < $config->{south});
} elsif ($config->{projection} eq 'sinusoidal') {
# absolute X
$X0 = ($lon - $config->{center_lon}) * cos($lat * $degtorad);
# pixel values
$x = sprintf("%d", ($X0 - $config->{Xleft}) / $config->{xres});
$y = sprintf("%d", ($config->{north} - $lat) / $config->{yres});
$vis = 0 if ($X0 < $config->{Xleft} or $X0 > $config->{Xright} or $lat > $config->{north} or $lat < $config->{south});
}
return ($x, $y, $vis);
}
sub labelsize {
my $config = shift;
my $label = shift;
# Calculate the label bounds needed later by the overlap corrector
my @tmp = GD::Image->stringFT($config->{IMAGE}->colorResolve(0, 0, 0),
$label->{font}, $label->{ptsize}, 0,
0, 0, $label->{text});
#$label->{labelx}, $label->{labely}, $label->{text});
$label->{LABEL_BOUNDS} = \@tmp;
}
sub compute_overlap {
my($config) = @_;
# We execute the program in order to be able to read its output
# 3 is the offset: space between dot and text
my $command = sprintf "$config->{overlap} $config->{w} $config->{h} 3";
my $pid = open2(\*R, \*W, $command) or die "open2: $!";
for(my $m = 0; $m < @{$config->{markers}}; $m++) {
my $marker = $config->{markers}->[$m];
next unless $marker->{visible};
next if $marker->{text} eq "";
my $ref = $marker->{LABEL_BOUNDS} or die; # TODO: use real bounds here
printf W ("%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
$m,
$marker->{x},
$marker->{y},
$marker->{x} - $marker->{dot_size},
$marker->{x} + $marker->{dot_size},
$marker->{y} - $marker->{dot_size},
$marker->{y} + $marker->{dot_size},
2 * $marker->{dot_size},
2 * $marker->{dot_size},
$marker->{x} + $ref->[0], # left x
$marker->{x} + $ref->[2], # right x
$marker->{y} + $ref->[5], # upper y
$marker->{y} + $ref->[1], # lower y
$ref->[2] - $ref->[0], # width
$ref->[1] - $ref->[5] # height
);
}
close(W);
# Analyse the output
while (<R>) {
/(\d+)\t([+-]\d+)\t([+-]\d+)/ or warn "unknown overlap output: $_";
$config->{markers}->[$1]->{labelx} = $2;
$config->{markers}->[$1]->{labely} = $3;
}
close(R);
}
sub draw_label_new {
my ($config, $item, $geom_args) = @_;
my ($x, $y, $text) = (
$item->{labelx}, # label upper left abscissa
$item->{labely}, # label upper ordinate
$item->{text}
);
my $image = $config->{IMAGE};
my $font = $item->{font} || $config->{font};
my $fontsize = $item->{ptsize} || $config->{ptsize};
if($geom_args) {
$item->{labelx} = $x = $x =~ /^-/ ? $config->{w} + $x - $item->{LABEL_BOUNDS}->[2] : $x;
$item->{labely} = $y = $y =~ /^-/ ? $config->{h} + $y : $y - $item->{LABEL_BOUNDS}->[5];
}
my $b = $item->{label_border} ? $item->{label_border} : $config->{label_border};
if (ref $b) { # might be -1
my $bordercolor = $image->colorResolve(@$b);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x+1, $y+1, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x-1, $y-1, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x+1, $y-1, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x-1, $y+1, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x+1, $y, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x-1, $y, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x, $y-1, $text);
$image->stringFT($bordercolor, $font, $fontsize, 0, $x, $y+1, $text);
}
# And finally draw the text in the middle
my $fontcolor = $image->colorResolve(@{$item->{label_color} || $config->{label_color}});
my @bounds = $image->stringFT($fontcolor, $font, $fontsize, 0, $x, $y, $text);
$item->{LABEL_BOUNDS} = \@bounds; # save bounds for imagemap
}
sub draw_dot_new {
my($config, $marker) = @_;
my ($x, $y, $image) = ($marker->{x}, $marker->{y}, $config->{IMAGE});
my $dotcolour = $image->colorResolve(@{$marker->{dot_color}});
my $dotborder = (ref $marker->{dot_border} ? $image->colorResolve(@{$marker->{dot_border}}) : undef);
if ($marker->{dot_shape} eq 'dot') {
# core of the dot
# draw concentric circles until the requested radius is reached
for (my $rayon = 0; $rayon <= $marker->{dot_size}; $rayon++) {
$image->arc($x, $y, $rayon, $rayon, 0, 360, $dotcolour);
}
$image->arc($x,$y, $marker->{dot_size}+1, $marker->{dot_size}+1, 0, 360, $dotborder) if defined $dotborder;
} else { # circle
$image->arc($x,$y, $marker->{dot_size}+1, $marker->{dot_size}+1, 0, 360, $dotborder) if defined $dotborder;
$image->arc($x,$y, $marker->{dot_size}, $marker->{dot_size}, 0, 360, $dotcolour);
$image->arc($x,$y, $marker->{dot_size}+1, $marker->{dot_size}+1, 0, 360, $dotborder) if defined $dotborder;
}
}
sub set_line_style {
my $config = shift;
for(my $i = 25; $i >= 0; $i--) {
push @{$config->{line_style}}, $config->{IMAGE}->colorResolve(10*$i, 10*$i, 10*$i);
}
$config->{IMAGE}->setStyle(@{$config->{line_style}});
}
sub draw_line_new {
my ($config, $item) = @_;
my $image = $config->{IMAGE};
my $color = $image->colorResolve(@{$item->{link_color} || $config->{link_color}});
$image->line($item->{xs}, $item->{ys}, $item->{xd}, $item->{yd}, $color);
#$image->line($item->{xs}, $item->{ys}, $item->{xd}, $item->{yd}, gdStyled);
}
sub write {
my($config, $file) = @_;
my $image = $config->{IMAGE};
$file =~ /\.([^.]+)$/;
my $format = lc $1;
my $data;
if ($format eq "gd" or $format eq "gd1") {
$data = $image->gd;
} elsif ($format eq "gd2") {
$data = $image->gd2;
} elsif ($format eq "gif") {
$data = $image->gif;
} elsif ($format eq "jpg" or $format eq "jpeg") {
$data = $image->jpeg;
} elsif ($format eq "png") {
$data = $image->png;
} elsif ($format eq "wbmp") {
$data = $image->wbmp;
} else {
die "Unsupported output image format $format";
}
open (SVG, ">$file") or die "$file: $!";
binmode SVG;
print SVG $data;
close SVG;
}
sub compute_boundingbox { # compute bounding box
my $config = shift;
my $item = shift;
warn "box?" unless my $ref = $item->{LABEL_BOUNDS};
#$y = $config->{h} + $y if $y < 0;
#$x = $config->{w} + $x if $x < 0;
$config->{min_x} = $ref->[0] if not defined $config->{min_x} or $ref->[0] < $config->{min_x};
$config->{max_x} = $ref->[2] if not defined $config->{max_x} or $ref->[2] > $config->{max_x};
$config->{min_y} = $ref->[5] if not defined $config->{min_y} or $ref->[5] < $config->{min_y};
$config->{max_y} = $ref->[1] if not defined $config->{max_y} or $ref->[1] > $config->{max_y};
}
sub write_imagemap {
my $config = shift;
open MAP, ">$config->{imagemap}" or die "$config->{imagemap}: $!";
my $mapname = $config->{write};
$mapname =~ /([^\/]+)\.[^\/.]+$/; # get basename
$mapname = $1 if $1;
print MAP "<map name=\"$mapname\">\n";
foreach my $marker (@{$config->{markers}}, @{$config->{yxlabels}}) {
next unless $marker->{href} and $marker->{LABEL_BOUNDS};
my $ref = $marker->{LABEL_BOUNDS};
printf MAP "<area shape=\"rect\" coords=\"%d,%d,%d,%d\" href=\"%s\" alt=\"%s\" />\n",
$ref->[6], # left x
$ref->[7], # upper y
$ref->[2], # right x
$ref->[3], # lower y
$marker->{href},
$marker->{text};
}
print MAP "</map>\n";
close MAP;
}
# transitional stub
sub get_gpg_links {
IrcMarkers::File::get_gpg_links(@_);
}
1;
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