2 # Ikiwiki enhanced image handling plugin
3 # Christian Mock cm@tahina.priv.at 20061002
4 package IkiWiki::Plugin::img;
13 hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1);
16 sub preprocess (@) { #{{{
17 my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
20 if (exists $imgdefaults{$params{page}}) {
21 foreach my $key (keys %{$imgdefaults{$params{page}}}) {
22 if (! exists $params{$key}) {
23 $params{$key}=$imgdefaults{$params{page}}->{$key};
28 if (! exists $params{size}) {
32 if ($image eq 'defaults') {
33 $imgdefaults{$params{page}} = \%params;
37 push @{$links{$params{page}}}, $image;
38 # optimisation: detect scan mode, and avoid generating the image
39 if (! defined wantarray) {
43 my $file = bestlink($params{page}, $image);
45 my $dir = $params{page};
46 my $base = IkiWiki::basename($file);
48 eval q{use Image::Magick};
50 my $im = Image::Magick->new;
54 my ($dwidth, $dheight);
56 if ($params{size} ne 'full') {
57 my ($w, $h) = ($params{size} =~ /^(\d+)x(\d+)$/);
58 return "[[img ".sprintf(gettext('bad size "%s"'), $params{size})."]]"
59 unless (defined $w && defined $h);
61 my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
62 $imglink = "$dir/${w}x${h}-$base";
64 will_render($params{page}, $imglink);
66 if (-e $outfile && (-M srcfile($file) >= -M $outfile)) {
67 $r = $im->Read($outfile);
68 return "[[img ".sprintf(gettext("failed to read %s: %s"), $outfile, $r)."]]" if $r;
71 $r = $im->Read(srcfile($file));
72 return "[[img ".sprintf(gettext("failed to read %s: %s"), $file, $r)."]]" if $r;
74 # don't resize any larger
75 my ($rw, $rh) = ($w, $h);
76 if ($rw > $im->Get("width") ||
77 $rh > $im->Get("height")) {
78 $rw=$im->Get("width");
79 $rh=$im->Get("height");
82 $r = $im->Resize(geometry => "${rw}x${rh}");
83 return "[[img ".sprintf(gettext("failed to resize: %s"), $r)."]]" if $r;
85 # don't actually write file in preview mode
86 if (! $params{preview}) {
87 my @blob = $im->ImageToBlob();
88 writefile($imglink, $config{destdir}, $blob[0], 1);
95 # since we don't really resize larger, set the display
96 # size, so the browser can scale the image up if necessary
97 ($dwidth, $dheight)=($w, $h);
100 $r = $im->Read(srcfile($file));
101 return "[[img ".sprintf(gettext("failed to read %s: %s"), $file, $r)."]]" if $r;
103 $dwidth = $im->Get("width");
104 $dheight = $im->Get("height");
107 add_depends($imglink, $params{page});
109 my ($fileurl, $imgurl);
110 if (! $params{preview}) {
111 $fileurl=urlto($file, $params{destpage});
112 $imgurl=urlto($imglink, $params{destpage});
115 $fileurl="$config{url}/$file";
116 $imgurl="$config{url}/$imglink";
119 if (! defined($im->Get("width")) || ! defined($im->Get("height"))) {
120 return "[[img ".sprintf(gettext("failed to determine size of image %s"), $file)."]]";
123 my $imgtag='<img src="'.$imgurl.
124 '" alt="'.(exists $params{alt} ? $params{alt} : '').
126 '" height="'.$dheight.'"'.
127 (exists $params{title} ? ' title="'.$params{title}.'"' : '').
128 (exists $params{class} ? ' class="'.$params{class}.'"' : '').
129 (exists $params{id} ? ' id="'.$params{id}.'"' : '').
132 if (! defined $params{link} || lc($params{link}) eq 'yes') {
133 $imgtag='<a href="'.$fileurl.'">'.$imgtag.'</a>';
135 elsif ($params{link} =~ /^\w+:\/\//) {
136 $imgtag='<a href="'.$params{link}.'">'.$imgtag.'</a>';
138 elsif (length bestlink($params{page}, $params{link})) {
139 add_depends($params{page}, $params{link});
140 $imgtag=htmllink($params{page}, $params{destpage},
141 $params{link}, linktext => $imgtag,
145 if (exists $params{caption}) {
146 return '<table class="img">'.
147 '<caption>'.$params{caption}.'</caption>'.
148 '<tr><td>'.$imgtag.'</td></tr>'.