slideshow basically works
[mkgallery.git] / mkgallery.pl
1 #!/usr/bin/perl
2
3 # $Id$
4
5 # Recursively create image gallery index and slideshow wrappings.
6 # Makes use of (slightly modified) "lightbox" Javascript/CSS as published
7 # at http://www.huddletogether.com/projects/lightbox/
8
9 # Copyright (c) 2006 Eugene G. Crosser
10
11 #  This software is provided 'as-is', without any express or implied
12 #  warranty.  In no event will the authors be held liable for any damages
13 #  arising from the use of this software.
14 #
15 #  Permission is granted to anyone to use this software for any purpose,
16 #  including commercial applications, and to alter it and redistribute it
17 #  freely, subject to the following restrictions:
18 #
19 #  1. The origin of this software must not be misrepresented; you must not
20 #     claim that you wrote the original software. If you use this software
21 #     in a product, an acknowledgment in the product documentation would be
22 #     appreciated but is not required.
23 #  2. Altered source versions must be plainly marked as such, and must not be
24 #     misrepresented as being the original software.
25 #  3. This notice may not be removed or altered from any source distribution.
26
27 use strict;
28 use Carp;
29 use POSIX qw/getcwd/;
30 use CGI qw/:html *table *center *div/;
31 use Image::Info qw/image_info dim/;
32 use Image::Magick;
33
34 my $ask=1;
35 my $startdir=getcwd;
36
37 ######################################################################
38
39 &processdir($startdir);
40
41 sub processdir {
42         my ($start,$dir)=@_;
43         my $dn=$start;
44         $dn .= "/".$dir if ($dir);
45         unless ( -d $dn ) {
46                 warn "not a directory: $dn";
47                 return;
48         }
49         my $D;
50         unless (opendir($D,$dn)) {
51                 warn "cannot opendir $dn: $!";
52                 return;
53         }
54
55 # recurse into subdirectories BEFORE opening index file
56
57         &iteratedir($D,$start,$dir,sub {
58                 my ($start,$dir,$base)=@_;
59                 my $ndir = $dir;
60                 $ndir .= "/" if ($ndir);
61                 $ndir .= $base;
62                 return unless ( -d $start."/".$ndir );
63                 &processdir($start,$ndir);
64         });
65
66 # fill in title
67
68         my $title=&gettitle($dn,$dir);
69
70 # get include prefix
71
72         my $inc=&getinclude($dn);
73
74 # generate directory index unless suppressed
75
76         if ( -e $dn."/.noindex" ) {
77                 open(STDOUT,">/dev/null");
78         } else {
79                 open(STDOUT,">".$dn."/index.html");
80         }
81
82 # write HTML header
83
84         print start_html(-title => $title,
85                         -style=>{-src=>[$inc."gallery.css",
86                                         $inc."lightbox.css"]},
87                         -script=>[{-code=>"var incPrefix='$inc';"},
88                                 {-src=>$inc."gallery.js"},
89                                 {-src=>$inc."lightbox.js"}]),"\n";
90         print a({-href=>"../index.html"},"UP");
91         print start_center,"\n";
92         print h1($title),"\n";
93
94 # create list of sub-albums
95
96         my $hassubdirs=0;
97         &iteratedir($D,$start,$dir,sub {
98                 my ($start,$dir,$base)=@_;
99                 my $en=sprintf("%s/%s/%s",$start,$dir,$base);
100                 return unless ( -d $en );
101                 unless ($hassubdirs) {
102                         print hr,h2("Albums"),start_table,"\n";
103                         $hassubdirs=1;
104                 }
105                 &subalbum($base,&gettitle($en,$dir."/".$base));
106         });
107         print end_table,hr,"\n" if ($hassubdirs);
108
109 # create picture gallery
110
111         my @piclist=();
112         my @infolist=();
113
114         my $haspics=0;
115         &iteratedir($D,$start,$dir,sub {
116                 my ($start,$dir,$base)=@_;
117                 my $en=sprintf("%s/%s/%s",$start,$dir,$base);
118                 return unless ( -f $en );
119                 my $info = image_info($en);
120                 if (my $error = $info->{error}) {
121                         if (($error !~ "Unrecognized file format") &&
122                             ($error !~ "Can't read head")) {
123                                 print STDERR "File \"$en\": $error\n";
124                         }
125                         return;
126                 }
127                 if (&processfile($start,$dir,$base,$en,$info)) {
128                         $haspics=1;
129                         push(@piclist,$base);
130                         push(@infolist,$info);
131                 }
132         });
133
134 # write HTML footer
135
136         print br({-clear=>"all"}),"\n";
137         print a({-href=>".html/".$piclist[0]."-slide.html"},"Slideshow");
138         print hr,"\n" if ($haspics);
139         print end_center,"\n";
140         print end_html,"\n";
141
142         close(STDOUT);
143         closedir($D);
144
145 # generate html files for slideshow from @piclist
146
147         for (my $i=0;$i<=$#piclist;$i++) {
148                 my $base=$piclist[$i];
149                 my $pbase;
150                 my $nbase;
151                 $pbase=$piclist[$i-1] if ($i>0);
152                 $nbase=$piclist[$i+1] if ($i<$#piclist);
153                 for my $refresh('static','slide') {
154                         &mkauxfile($start,$dir,$pbase,$base,$nbase,
155                                         $refresh,$infolist[$i]);
156                 }
157         }
158
159 }
160
161 #############################################################
162 # helper functions
163 #############################################################
164
165 sub iteratedir {
166         my ($D,$start,$dir,$prog)=@_;
167         my @list=();
168         while (my $de=readdir($D)) {
169                 next if ($de =~ /^\./);
170                 push(@list,$de);
171         }
172         foreach my $de(sort @list) {
173                 &$prog($start,$dir,$de);
174         }
175         rewinddir($D);
176 }
177
178 sub getinclude {
179         my ($dn)=@_;
180
181         my $depth=20;
182         my $str="";
183         #print STDERR "start include ",$dn."/".$str.".include","\n";
184         while ( ! -d $dn."/".$str.".include" ) {
185                 #print STDERR "not include ",$dn."/".$str.".include","\n";
186                 $str.="../";
187                 last unless ($depth--);
188         }
189         #print STDERR "end include ",$dn."/".$str.".include","\n";
190         if ( -d $dn."/".$str.".include" ) {
191                 #print STDERR "return include ".$str.".include/".$fn,"\n";
192                 return $str.".include/";
193         } else {
194                 return ""; # won't work anyway but return something
195         }
196 }
197
198 sub gettitle {
199         my ($dir,$dflt)=@_;
200
201         my $F;
202         my $str;
203         if (open($F,"<".$dir."/.title")) {
204                 $str=<$F>;
205                 chop $str;
206                 close($F);
207         } else {
208                 print STDERR "enter title for $dir\n";
209                 $str=<>;
210                 if ($str =~ /^\s*$/) {
211                         $str=$dflt;
212                 }
213                 if (open($F,">".$dir."/.title")) {
214                         print $F $str,"\n";
215                         close($F);
216                 } else {
217                         print STDERR "cant open .title in $dir for writing: $!";
218                 }
219         }
220         return $str;
221 }
222
223 sub subalbum {
224         my ($base,$title)=@_;
225
226         print Tr({-bgcolor=>"#c0c0c0"},
227                 td(a({-href=>$base."/index.html"},$base)),
228                 td(a({-href=>$base."/index.html"},$title))),"\n";
229 }
230
231 sub processfile {
232         my ($start,$dir,$base,$fn,$info)=@_;
233
234         my ($w,$h) = dim($info);
235         my $title=$info->{'Comment'};
236         $title=$base unless ($title);
237         my $thumb=&scale($start,$dir,$base,$fn,160,$info);
238         my $medium=&scale($start,$dir,$base,$fn,640,$info);
239         print &infobox($info,$base,$fn),"\n";
240         print table({-class=>'slide'},Tr(td(
241                 a({-href=>".html/$base-info.html",
242                         -onClick=>"return showIbox('$base');"},$title),
243                 br,
244                 a({-href=>$medium,-rel=>"lightbox",-title=>$title},
245                         img({-src=>$thumb})),
246                 br,
247                 a({-href=>$base},"($w x $h)"),
248                 br))),"\n";
249         return 1;
250 }
251
252 sub infobox {
253         my ($info,$base,$fn)=@_;
254
255         my @infokeys=(
256                 'DateTime',
257                 'ExposureTime',
258                 'FNumber',
259                 'Flash',
260                 'ISOSpeedRatings',
261                 'MeteringMode',
262                 'ExposureProgram',
263                 'FocalLength',
264                 'FileSource',
265                 'Make',
266                 'Model',
267                 'Software',
268         );
269
270         my $msg=start_div({-class=>'ibox',-id=>$base,-OnClick=>"HideIbox('$base');"});
271         $msg.=span({-style=>'float: left;'},"Info for $base").
272                 span({-style=>'float: right;'},
273                         a({-href=>"#",-OnClick=>"HideIbox('$base');"},"Close"));
274         $msg.=br({-clear=>'all'});
275         $msg.=start_table;
276         foreach my $k(@infokeys) {
277                 $msg.=Tr(td($k.":"),td($info->{$k}));
278         }
279         $msg.=end_table;
280         $msg.=end_div;
281         return $msg;
282 }
283
284 sub mkauxfile {
285         my ($start,$dir,$pbase,$base,$nbase,$refresh,$info) =@_;
286         my $en=sprintf("%s/%s/.html/%s-%s.html",$start,$dir,$base,$refresh);
287         my $pref;
288         my $nref;
289         if ($pbase) {
290                 $pref=sprintf("%s-%s.html",$pbase,$refresh);
291         } else {
292                 $pref="../index.html";
293         }
294         if ($nbase) {
295                 $nref=sprintf("%s-%s.html",$nbase,$refresh);
296         } else {
297                 $nref="../index.html";
298         }
299         my $toggle;
300         my $toggleref;
301         if ($refresh eq 'slide') {
302                 $toggle='Stop!';
303                 $toggleref=sprintf("%s-static.html",$base);
304         } else {
305                 $toggle='Play-&gt;';
306                 $toggleref=sprintf("%s-slide.html",$base);
307         }
308
309         my $tdir=sprintf "%s/%s/.html",$start,$dir;
310         mkdir($tdir,0755) unless ( -d $tdir );
311
312         unless (open(STDOUT,">".$en)) {
313                 warn "cannot open $en: $!";
314                 return;
315         }
316         my $title=$info->{'Comment'};
317         $title=$base unless ($title);
318         if ($refresh eq 'slide') {
319                 print start_html(-title=>$title,
320                                 -bgcolor=>"#808080",
321                         -head=>meta({-http_equiv=>'Refresh',
322                                 -content=>"3; url=$nref"})),"\n";
323         } else {
324                 print start_html(-title=>$title,
325                                 -bgcolor=>"#808080"),"\n";
326         }
327         print start_center,"\n";
328         print h1($title);
329         print a({-href=>"../index.html"},"Index")," | ";
330         print a({-href=>$pref},"&lt;&lt;Prev")," | ";
331         print a({-href=>$toggleref},$toggle)," | ";
332         print a({-href=>$nref},"Next&gt;&gt;");
333         print p;
334         print img({-src=>"../.640/".$base}),"\n";
335         print end_center,"\n";
336         print end_html,"\n";
337         close(STDOUT);
338 }
339
340 sub scale {
341         my ($start,$dir,$base,$fn,$tsize,$info)=@_;
342         my ($w,$h) = dim($info);
343         my $max=($w>$h)?$w:$h;
344         my $factor=$tsize/$max;
345
346         return $base if ($factor >= 1);
347
348         my $tdir=sprintf "%s/%s/.%s",$start,$dir,$tsize;
349         mkdir($tdir,0755) unless ( -d $tdir );
350         my $tbase=sprintf ".%s/%s",$tsize,$base;
351         my $tfn=sprintf "%s/%s",$tdir,$base;
352         my @sstat=stat($fn);
353         my @tstat=stat($tfn);
354         return $tbase if (@tstat && ($sstat[9] < $tstat[9])); # [9] -> mtime
355
356         print STDERR "scale by $factor from $fn to $tfn\n";
357         &doscaling($fn,$tfn,$factor,$w,$h);
358         return $tbase;
359 }
360
361 sub doscaling {
362         my ($src,$dest,$factor,$w,$h)=@_;
363
364         my $im=new Image::Magick;
365         my $err;
366         #print STDERR "doscale $src -> $dest by $factor\n";
367         $err=$im->Read($src);
368         unless ($err) {
369                 $im->Scale(width=>$w*$factor,height=>$h*$factor);
370                 $err=$im->Write($dest);
371                 warn "ImageMagic: write \"$dest\": $err" if ($err);
372         } else {
373                 warn "ImageMagic: read \"$src\": $err";
374                 system("djpeg \"$src\" | pnmscale \"$factor\" | cjpeg >\"$dest\"");
375         }
376         undef $im;
377 }