on Anne's karmic koala, gtk_events_pending() is much more often true than on my machi...
[booh] / bin / booh-classifier
1 #! /usr/bin/ruby
2 #
3 #                         *  BOOH  *
4 #
5 # A.k.a 'Best web-album Of the world, Or your money back, Humerus'.
6 #
7 # The acronyn sucks, however this is a tribute to Dragon Ball by
8 # Akira Toriyama, where the last enemy beaten by heroes of Dragon
9 # Ball is named "Boo". But there was already a free software project
10 # called Boo, so this one will be it "Booh". Or whatever.
11 #
12 #
13 # Copyright (c) 2004-2009 Guillaume Cottenceau <http://zarb.org/~gc/resource/gc_mail.png>
14 #
15 # This software may be freely redistributed under the terms of the GNU
16 # public license version 2.
17 #
18 # You should have received a copy of the GNU General Public License
19 # along with this program; if not, write to the Free Software
20 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
22 require 'getoptlong'
23 require 'tempfile'
24
25 require 'gtk2'
26 require 'booh/libadds'
27
28 require 'gettext'
29 include GetText
30 bindtextdomain("booh")
31
32 require 'booh/rexml/document'
33 include REXML
34
35 require 'booh/booh-lib'
36 include Booh
37 require 'booh/UndoHandler'
38
39
40 #- options
41 $options = [
42     [ '--help',          '-h', GetoptLong::NO_ARGUMENT, _("Get help message") ],
43     [ '--sort-by-exif-date', '-s', GetoptLong::NO_ARGUMENT, _("Sort entries by EXIF date") ],
44     [ '--verbose-level', '-v', GetoptLong::REQUIRED_ARGUMENT, _("Set max verbosity level (0: errors, 1: warnings, 2: important messages, 3: other messages)") ],
45     [ '--version',       '-V', GetoptLong::NO_ARGUMENT, _("Print version and exit") ],
46 ]
47
48 $preloader_allowed = false
49
50 def usage
51     puts _("Usage: %s [OPTION]...") % File.basename($0)
52     $options.each { |ary|
53         printf " %3s, %-15s %s\n", ary[1], ary[0], ary[3]
54     }
55 end
56
57 def handle_options
58     parser = GetoptLong.new
59     parser.set_options(*$options.collect { |ary| ary[0..2] })
60     begin
61         parser.each_option do |name, arg|
62             case name
63             when '--help'
64                 usage
65                 exit(0)
66
67             when '--sort-by-exif-date'
68                 $sort_by_exif_date = true
69
70             when '--verbose-level'
71                 $verbose_level = arg.to_i
72
73             when '--version'
74                 puts _("Booh version %s
75
76 Copyright (c) 2005-2009 Guillaume Cottenceau.
77 This is free software; see the source for copying conditions.  There is NO
78 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.") % $VERSION
79
80                 exit(0)
81
82             end
83         end
84     rescue
85         puts $!
86         usage
87         exit(1)
88     end
89 end
90
91 def total_memory
92     meminfo = IO.readlines('/proc/meminfo').join
93     meminfo =~ /MemTotal:.*?(\d+)/ or return -1
94     memory = $1.to_i
95     meminfo =~ /SwapTotal:.*?(\d+)/ or return -1
96     return memory + $1.to_i
97 end
98
99 def startup_memfree
100     if $startup_memfree.nil?
101         meminfo = IO.readlines('/proc/meminfo').join
102         meminfo =~ /MemFree:.*?(\d+)/ or return -1
103         memfree = $1
104         meminfo =~ /Buffers:.*?(\d+)/ and buffers = $1
105         meminfo =~ /Cached:.*?(\d+)/ and cached = $1
106         $startup_memfree = memfree.to_i + buffers.to_i + cached.to_i
107     end
108     return $startup_memfree
109 end
110
111 def set_cache_memory_use_figure
112     
113     if $config['cache-memory-use'] =~ /memfree_(\d+)/
114         $config['cache-memory-use-figure'] = startup_memfree*$1.to_f/100
115     else
116         $config['cache-memory-use-figure'] = $config['cache-memory-use'].to_i
117     end
118     #- cannot fork if process is > 0.5 total memory
119     if $config['cache-memory-use-figure'] > total_memory * 0.4
120         $config['cache-memory-use-figure'] = total_memory * 0.4
121         msg 2, _("Cache memory used: %s kB (reduced because cannot exceed 50%% of total memory)") % $config['cache-memory-use-figure']
122     else
123         msg 2, _("Cache memory used: %s kB") % $config['cache-memory-use-figure']
124     end
125 end
126
127 def read_config
128     $config = {}
129     $config_file = File.expand_path('~/.booh-classifier-rc')
130     if File.readable?($config_file)
131         $xmldoc = REXML::Document.new(File.new($config_file))
132         $xmldoc.root.elements.each { |element|
133             txt = element.get_text
134             if txt
135                 if txt.value =~ /~~~/
136                     $config[element.name] = txt.value.split(/~~~/)
137                 else
138                     $config[element.name] = txt.value
139                 end
140             elsif element.elements.size == 0
141                 $config[element.name] = ''
142             else
143                 $config[element.name] = {}
144                 element.each { |chld|
145                     txt = chld.get_text
146                     $config[element.name][chld.name] = txt ? txt.value : nil
147                 }
148             end
149         }
150     end
151     $config['video-viewer'] ||= '/usr/bin/mplayer %f'
152     $config['browser'] ||= "/usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f"
153     $config['preload-distance'] ||= '5'
154     $config['cache-memory-use'] ||= 'memfree_80%'
155     $config['rotate-set-exif'] ||= 'true'
156     $config['thumbnails-height'] ||= '64'
157     set_cache_memory_use_figure
158 end
159
160 def check_config
161     missing = %w(mplayer).delete_if { |prg| system("which #{prg} >/dev/null 2>/dev/null") }
162     if missing != []
163         show_popup($main_window, utf8(_("The following program(s) are needed to handle videos: '%s'. Videos will be ignored.") % missing.join(', ')), { :pos_centered => true })
164     end
165
166     if !system("which exif >/dev/null 2>/dev/null")
167         show_popup($main_window, utf8(_("The program 'exif' is needed to view EXIF data. Please install it.")), { :pos_centered => true })
168     end
169     viewer_binary = $config['video-viewer'].split.first
170     if viewer_binary && ! File.executable?(viewer_binary)
171         show_popup($main_window, utf8(_("The configured video viewer seems to be unavailable.
172 You should fix this in Edit/Preferences so that you can view videos.
173
174 Problem was: '%s' is not an executable file.
175 Hint: don't forget to specify the full path to the executable,
176 e.g. '/usr/bin/mplayer' is correct but 'mplayer' only is not.") % viewer_binary), { :pos_centered => true, :not_transient => true })
177     end
178     check_browser
179 end
180
181 def write_config
182     ios = File.open($config_file, "w")
183     $xmldoc = Document.new "<booh-classifier-rc version='#{$VERSION}'/>"
184     $xmldoc << XMLDecl.new(XMLDecl::DEFAULT_VERSION, $CURRENT_CHARSET)
185     $config.each_pair { |key, value|
186         elem = $xmldoc.root.add_element key
187         if value.is_a? Hash
188             $config[key].each_pair { |subkey, subvalue|
189                 subelem = elem.add_element subkey
190                 subelem.add_text subvalue.to_s
191             }
192         elsif value.is_a? Array
193             elem.add_text value.join('~~~')
194         else
195             if !value
196                 elem.remove
197             else
198                 elem.add_text value.to_s
199             end
200         end
201     }
202     $xmldoc.write(ios)
203     ios.close
204 end
205
206 def save_undo(name, closure, *params)
207     UndoHandler.save_undo(name, closure, [ *params ])
208     $undo_mb.sensitive = true
209     $redo_mb.sensitive = false
210 end
211
212 def get_mem
213     IO.readlines('/proc/self/status').join =~ /VmSize.*?(\d+)\s*kB/
214     msg 3, "VmSize: #{$1}"
215     return $1.to_i
216 end
217
218 def show_mem(*txt)
219     txt.length > 0 and print txt[0]
220     msg 2, "RSS: #{get_mem}"
221 end
222
223 class Gdk::Color
224     def darker
225         color = dup
226         color.red = [ color.red - 10000, 0 ].max
227         color.green = [ color.green - 10000, 0 ].max
228         color.blue = [ color.blue - 10000, 0 ].max
229         return color
230     end
231     def lighter
232         color = dup
233         color.red = [ color.red + 10000, 65535 ].min
234         color.green = [ color.green + 10000, 65535 ].min
235         color.blue = [ color.blue + 10000, 65535 ].min
236         return color
237     end
238 end
239
240 $color_red = Gdk::Color.new(65535, 0, 0)
241 $colors = [ Gdk::Color.new(0, 65535, 0),
242             Gdk::Color.new(0, 0, 65535),
243             Gdk::Color.new(65535, 65535, 0),
244             Gdk::Color.new(0, 65535, 65535),
245             Gdk::Color.new(65535, 0, 65535) ]
246
247 class Label
248     attr_accessor :color, :name, :button
249     def initialize(name)
250         @name = name
251     end
252 end
253
254 class InterruptedLoading < Exception
255     #- not a StandardError, not catched by a simple rescue
256 end
257
258 def show_pixbufs_present
259     if 3 <= $verbose_level
260         out = 'Full pixbufs ['
261         for entry in $allentries
262             out += entry.pixbuf_full_present? ? 'F' : '.'
263         end
264         msg 3, out + ']'
265     end
266 end
267
268 class Entry
269     @@max_width = nil
270     def Entry.thumbnails_height
271         return $config['thumbnails-height'].to_i
272     end
273
274     attr_accessor :path, :guipath, :type, :angle, :button, :image, :alignment, :removed, :labeled, :loader
275
276     def initialize(path, type, guipath)
277         @path = path
278         @type = type
279         @guipath = guipath
280         if @@max_width.nil?
281             @@max_width = $main_window.root_window.size[0] - $labels_vbox.allocation.width - ( $videoborder_pixbuf.width + MainView.borders_thickness) * 2
282         end
283     end
284
285     def pixbuf_full_present?
286         return ! @pixbuf_full.nil?
287     end
288     def free_pixbuf_full
289         if @pixbuf_full.nil?
290             return false
291         else
292             msg 3, ">>> free_pixbuf_full #{path}"
293             @pixbuf_full = nil
294             return true
295         end
296     end
297
298     def pixbuf_main
299         Gtk.main_iteration while Gtk.events_pending?
300         width, height = $mainview.window.size 
301         width = MainView.get_usable_width(width)
302         height = MainView.get_usable_height(height)
303         if @pixbuf_main.nil? || width != @width || height != @height
304             @width = width
305             @height = height
306             load_into_pixbuf_full  #- make sure it is loaded
307             if @pixbuf_full.nil?
308                 return
309             end
310             if @pixbuf_full.width.to_f / @pixbuf_full.height > width.to_f / height
311                 resized_height = @pixbuf_full.height * (width.to_f/@pixbuf_full.width)
312                 if @pixbuf_full.width > width || @pixbuf_full.height > resized_height
313                     @pixbuf_main = @pixbuf_full.scale(width, resized_height, Gdk::Pixbuf::INTERP_BILINEAR)
314                 else
315                     @pixbuf_main = @pixbuf_full
316                 end
317             else
318                 resized_width = @pixbuf_full.width * (height.to_f/@pixbuf_full.height)
319                 if @pixbuf_full.width > resized_width || @pixbuf_full.height > height
320                     @pixbuf_main = @pixbuf_full.scale(resized_width, height, Gdk::Pixbuf::INTERP_BILINEAR)
321                 else
322                     @pixbuf_main = @pixbuf_full
323                 end
324             end
325         end
326         return @pixbuf_main
327     end
328     def pixbuf_main_present?
329         return ! @pixbuf_main.nil?
330     end
331     def free_pixbuf_main
332         if @pixbuf_main.nil?
333             return false
334         else
335             msg 3, ">>> free_pixbuf_main #{path}"
336             @pixbuf_main = nil
337             return true
338         end
339     end
340
341     def pixbuf_thumbnail
342         Gtk.main_iteration while Gtk.events_pending?
343         if @pixbuf_thumbnail.nil?
344             if @pixbuf_main
345                 msg 3, ">>> pixbuf_thumbnail from main #{path}"
346                 @pixbuf_thumbnail = @pixbuf_main.scale(@pixbuf_main.width * (Entry.thumbnails_height.to_f/@pixbuf_main.height), Entry.thumbnails_height, Gdk::Pixbuf::INTERP_BILINEAR)
347             else
348                 msg 3, ">>> pixbuf_thumbnail from file #{path}"
349                 @pixbuf_thumbnail = load_into_pixbuf_at_size { |w, h|
350                     if @angle == 0
351                         if h > Entry.thumbnails_height
352                             [ w * Entry.thumbnails_height.to_f/h, Entry.thumbnails_height ]
353                         else
354                             [ w, h ]
355                         end
356                     else
357                         if w > Entry.thumbnails_height
358                             [ Entry.thumbnails_height, h * Entry.thumbnails_height.to_f/w ]
359                         else
360                             [ w, h ]
361                         end
362                     end
363                 }
364             end
365         end
366         return @pixbuf_thumbnail
367     end
368     def free_pixbuf_thumbnail
369         if @pixbuf_thumbnail.nil?
370             return false
371         else
372             msg 3, ">>> free_pixbuf_thumbnail #{path}"
373             @pixbuf_thumbnail = nil
374             return true
375         end
376     end
377
378     def outline_color
379         if removed
380             return $color_red
381         elsif labeled
382             return labeled.color
383         else
384             return nil
385         end
386     end
387
388     def show_bg
389         if outline_color.nil?
390             button.modify_bg(Gtk::StateType::NORMAL, nil)
391             button.modify_bg(Gtk::StateType::PRELIGHT, nil)
392             button.modify_bg(Gtk::StateType::ACTIVE, nil)
393         else
394             button.modify_bg(Gtk::StateType::NORMAL, outline_color)
395             button.modify_bg(Gtk::StateType::PRELIGHT, outline_color.lighter)
396             button.modify_bg(Gtk::StateType::ACTIVE, outline_color)
397         end
398     end
399
400     def get_beautified_name
401         if type == 'image'
402             size = get_image_size(path)
403             return _("%s (%sx%s, %s KB)") % [@guipath.gsub(/\.[^.]+$/, ''),
404                                              size[:x],
405                                              size[:y],
406                                              commify(file_size(path)/1024)]
407         else
408             return _("%s (video - %s KB)") % [@guipath.gsub(/\.[^.]+$/, ''),
409                                              commify(file_size(path)/1024)]
410         end
411     end
412
413     private
414     def load_into_pixbuf_full
415         if @pixbuf_full.nil?
416             msg 3, ">>> load_into_pixbuf_full #{path}"
417             @pixbuf_full = load_into_pixbuf_at_size { |w, h|
418                 if @angle == 0
419                     if w > @@max_width
420                         #- save memory and speedup (+35%) loading 
421                         [ w * (factor = @@max_width.to_f/w), h * factor ]
422                     else
423                         [ w, h ]
424                     end
425                 else
426                     if h > @@max_width
427                         [ w * (factor = @@max_width.to_f/h), h * factor ]
428                     else
429                         [ w, h ]
430                     end
431                 end
432             }
433             show_pixbufs_present
434         end
435     end
436
437     def load_into_pixbuf_at_size(&specify_size)
438         if @type == 'video'
439             if @video_image_path.nil?
440                 orig_base = File.basename(path)
441                 tmpdir = gen_video_thumbnail(path, false, 0)
442                 if tmpdir.nil?
443                     return
444                 end
445                 @video_image_path = "#{tmpdir}/00000001.jpg"
446             end
447             image_path = @video_image_path
448         else
449             image_path = @path
450         end
451         if @angle.nil?
452             if @type == 'image'
453                 @angle = guess_rotate(image_path)
454             else
455                 @angle = 0
456             end
457         end
458         begin
459             #- use a pixbuf loader and check Gtk.events_pending? on each chunk, to keep the UI responsive even
460             #- if loaded pictures are several MBs large
461             if @loader.nil?
462                 @loader = Gdk::PixbufLoader.new
463                 @loader.signal_connect('size-prepared') { |l, w, h|
464                     @loader.set_size(*specify_size.call(w, h))
465                 }
466                 @loader.signal_connect('area-prepared') { @loaded_pixbuf = @loader.pixbuf }
467                 @loader_offset = 0
468             end
469             msg 3, "calling load_not_freezing_ui on #{image_path}, offset #{@loader_offset}"
470             @loader_offset = @loader.load_not_freezing_ui(image_path, @loader_offset)
471             if @loader_offset > 0
472                 #- interrupted
473                 raise InterruptedLoading
474             end
475             @loader = nil
476             if @loaded_pixbuf.nil?
477                 raise "Loaded pixbuf nil - #{path} #{image_path}"
478             end
479         rescue
480             msg 0, "Cannot load #{image_path}: #{$!}"
481             return
482         ensure
483             if @video_image_path && @loader.nil?
484                 File.delete(@video_image_path)
485                 Dir.rmdir(File.dirname(@video_image_path))
486                 @video_image_path = nil
487             end
488         end
489         if @loaded_pixbuf
490             if @angle != 0
491                 msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
492                 @loaded_pixbuf = rotate_pixbuf(@loaded_pixbuf, @angle)
493             end
494         end
495         retval = @loaded_pixbuf
496         @loaded_pixbuf = nil
497         return retval
498     end
499
500     def to_s
501         @path
502     end
503 end
504
505 $allentries = []
506
507 def gc
508     start = Time.now
509     GC.start
510     msg 3, "GC in #{Time.now - start} s"
511 end
512
513 def free_cache_if_needed
514     i = $allentries.index($mainview.get_shown_entry)
515     return if i.nil?
516     if get_mem > $config['cache-memory-use-figure']
517         msg 3, "too much RSS, triggering GC"
518         gc
519     end
520     if get_mem < $config['cache-memory-use-figure']
521         return
522     end
523     msg 3, "too much RSS, freeing some cache"
524     start = Time.now
525     freed = 0
526     ($allentries.size - 1).downto($config['preload-distance'].to_i + 1) { |j|
527         index = i + j
528         if i + j < $allentries.size
529             $allentries[i + j].free_pixbuf_full
530             if $allentries[i + j].free_pixbuf_main
531                 freed += 1
532             end
533         end
534         if i - j >= 0
535             $allentries[i - j].free_pixbuf_full
536             if $allentries[i - j].free_pixbuf_main
537                 freed += 1
538             end
539         end
540         if freed >= 10
541             gc
542             if get_mem < $config['cache-memory-use-figure'] * 3 / 4
543                 msg 3, "RSS down enough - freeing done in #{Time.now - start} s"
544                 show_pixbufs_present
545                 return
546             end
547             freed = 0
548         end
549     }
550     msg 3, "freeing done in #{Time.now - start} s"
551     show_pixbufs_present
552 end
553
554 def run_preloader_real
555     msg 3, "*** >> main preloading triggered..."
556     if $mainview.get_shown_entry
557         free_cache_if_needed
558         if $config['preload-distance'].to_i == 0
559             return true
560         end
561         index = $allentries.index($mainview.get_shown_entry)
562         index_right = index
563         index_left = index
564         loaded_right = 0
565         loaded_left = 0
566         right_done = false
567         left_done = false
568         loaded = []
569         while ! right_done || ! left_done
570             if ! right_done
571                 index_right += 1
572                 while index_right < $allentries.size && ! visible($allentries[index_right])
573                     index_right += 1
574                 end
575                 if index_right == $allentries.size
576                     right_done = true
577                 else
578                     if ! $allentries[index_right].pixbuf_main_present?
579                         msg 3, "preloading #{$allentries[index_right].path}"
580                         begin
581                             $allentries[index_right].pixbuf_main
582                         rescue InterruptedLoading
583                             msg 3, "*** >>>> interrupted, rerun"
584                             return false
585                         end
586                     end
587                     loaded << index_right
588                     loaded_right += 1
589                     if loaded_right == $config['preload-distance'].to_i
590                         right_done = true
591                     end
592                 end
593             end
594
595             if ! left_done
596                 index_left -= 1
597                 while index_left >= 0 && ! visible($allentries[index_left])
598                     index_left -= 1
599                 end
600                 if index_left == -1
601                     left_done = true
602                 else
603                     if ! $allentries[index_left].pixbuf_main_present?
604                         msg 3, "preloading #{$allentries[index_left].path}"
605                         begin
606                             $allentries[index_left].pixbuf_main
607                         rescue InterruptedLoading
608                             msg 3, "*** >>>> interrupted, rerun"
609                             return false
610                         end
611                     end
612                     loaded << index_left
613                     loaded_left += 1
614                     if loaded_left == $config['preload-distance'].to_i
615                         left_done = true
616                     end
617                 end
618             end
619
620             #- in case just loaded another directory
621             if $preloader_force_exit
622                 $preloader_force_exit = false
623                 return true
624             end
625             #- in case moved fast
626             if index != $allentries.index($mainview.get_shown_entry)
627                 msg 3, "*** >>>> moved already, rerun"
628                 return false
629             end
630         end
631     end
632     msg 3, "*** << main preloading finished"
633     return true
634 end
635
636 def run_preloader
637     if ! $preloader_allowed
638         msg 3, "*** preloader not yet allowed"
639         return
640     end
641
642     if $preloader_running
643         msg 3, "preloader already running"
644         return
645     end
646     msg 3, "run preloader"
647     $preloader_running = true
648     Gtk.idle_add {
649         msg 3, "begin preloader from timeout "
650         if run_preloader_real
651             $preloader_running = false
652             false
653         else
654             true
655         end
656     }
657 end
658
659 class MainView < Gtk::DrawingArea
660
661     @@borders_thickness = 5
662     @@borders_length = 25
663     @@redraw_pending = nil
664
665     def MainView.borders_thickness
666         return @@borders_thickness
667     end
668
669     def MainView.get_usable_width(available_width)
670         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
671     end
672
673     def MainView.get_usable_height(available_height)
674         return available_height - @@borders_thickness * 2
675     end
676     
677     def initialize
678         super()
679         signal_connect('expose-event') { draw }
680         signal_connect('configure-event') { update_shown }
681     end
682
683     def try_show_entry(entry)
684         if entry && entry.button
685             if entry.button.has_focus?
686                 redraw
687             else
688                 entry.button.grab_focus
689             end
690         end
691     end
692
693     def set_shown_entry(entry)
694         t1 = Time.now
695         if entry && entry == @entry
696             return
697         end
698         if entry && ! entry.button
699             #- not loaded yet
700             return
701         end
702         @entry = entry
703         @entry and msg 3, "*** set entry to #{@entry.path}"
704         redraw
705         msg 3, "entry shown in: #{Time.now - t1} s"
706     end
707
708     def get_shown_entry
709         return @entry
710     end
711
712     def show_next_entry(entry)
713         index = $allentries.index(entry)
714         if index < $allentries.size - 1
715             index += 1
716         end
717         while index < $allentries.size - 1 && $allentries[index] && $allentries[index].button && ! $allentries[index].button.visible?
718             index += 1
719         end
720         while $allentries[index] && $allentries[index].button && ! $allentries[index].button.visible? && index > 0
721             index -= 1
722         end
723         if index < $allentries.size && $allentries[index] && $allentries[index].button && $allentries[index].button.visible?
724             try_show_entry($allentries[index])
725         end
726     end
727
728     def redraw
729         if @@redraw_pending
730             msg 3, "redraw already pending"
731             return
732         end
733         msg 3, "redraw"
734         @@redraw_pending = Gtk.idle_add {
735             msg 3, "begin redraw from timeout "
736             begin
737                 msg 3, "try redraw from timeout"
738                 redraw_real
739                 @@redraw_pending = nil
740                 run_preloader
741                 false
742             rescue InterruptedLoading
743                 msg 3, "interrupted, will retry"
744                 true
745             end
746         }
747     end
748
749     def redraw_real
750         @entry and sb_msg(_("Selected %s") % @entry.get_beautified_name)
751         if ! update_shown
752             return
753         end
754         w, h = window.size
755         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
756         window.clear
757         draw
758         window.end_paint
759     end
760
761     def update_shown
762         if @entry
763             msg 3, "################################################ trying to show #{@entry.path}"
764             pixbuf = @entry.pixbuf_main
765             if pixbuf
766                 @pixbuf = pixbuf
767                 width, height = window.size 
768                 @xpos = (width - @pixbuf.width)/2
769                 @ypos = (height - @pixbuf.height)/2
770                 return true
771             else
772                 return false
773             end
774         else
775             @pixbuf = nil
776             return true
777         end
778     end
779
780     def draw
781         if @pixbuf
782             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
783             if @entry && @entry.type == 'video'
784                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
785             end
786             if @entry && ! @entry.outline_color.nil?
787                 gc = Gdk::GC.new(window)
788                 colormap.alloc_color(@entry.outline_color, false, true)
789                 gc.set_foreground(@entry.outline_color)
790                 if @entry.type == 'video'
791                     xleft = @xpos - $videoborder_pixbuf.width
792                     xright = @xpos + @pixbuf.width + $videoborder_pixbuf.width
793                 else
794                     xleft = @xpos
795                     xright = @xpos + @pixbuf.width
796                 end
797                 window.draw_polygon(gc, true, [[xleft - @@borders_thickness, @ypos - @@borders_thickness],
798                                                [xright + @@borders_thickness, @ypos - @@borders_thickness],
799                                                [xright + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
800                                                [xleft - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
801                                                [xleft - @@borders_thickness, @ypos - 1],
802                                                [xleft - 1, @ypos - 1],
803                                                [xleft - 1, @ypos + @pixbuf.height + 1],
804                                                [xright + 1, @ypos + @pixbuf.height + 1],
805                                                [xright + 1, @ypos - 1],
806                                                [xleft - @@borders_thickness, @ypos - 1]])
807             end
808         end
809     end
810 end
811
812 def autoscroll_if_needed(button, center)
813     xpos_left = button.allocation.x
814     xpos_right = button.allocation.x + button.allocation.width
815     hadj = $imagesline_sw.hadjustment
816     current_minx_visible = hadj.value
817     current_maxx_visible = hadj.value + hadj.page_size
818     if ! center
819         if xpos_left < current_minx_visible
820             #- autoscroll left
821             newval = hadj.value - (current_minx_visible - xpos_left)
822             hadj.value = newval
823         elsif xpos_right > current_maxx_visible
824             #- autoscroll right
825             newval = hadj.value + (xpos_right - current_maxx_visible)
826             if newval > hadj.upper - hadj.page_size
827                 newval = hadj.upper - hadj.page_size
828             end
829             hadj.value = newval
830         end
831     else
832         hadj.value = clamp((xpos_left + xpos_right) / 2 - hadj.page_size / 2, 0, hadj.upper - hadj.page_size)
833     end
834 end
835
836 def show_popup(parent, msg, *options)
837     dialog = Gtk::Dialog.new
838     if options[0]
839         options = options[0]
840     else
841         options = {}
842     end
843     if options[:title]
844         dialog.title = options[:title]
845     else
846         dialog.title = utf8(_("Booh message"))
847     end
848     lbl = Gtk::Label.new
849     if options[:nomarkup]
850         lbl.text = msg
851     else
852         lbl.markup = msg
853     end
854     if options[:centered]
855         lbl.set_justify(Gtk::Justification::CENTER)
856     end
857     if options[:selectable]
858         lbl.selectable = true
859     end
860     if options[:topwidget]
861         dialog.vbox.add(options[0][:topwidget])
862     end
863     if options[:scrolled]
864         sw = Gtk::ScrolledWindow.new(nil, nil)
865         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
866         sw.add_with_viewport(lbl)
867         dialog.vbox.add(sw)
868         dialog.set_default_size(500, 600)
869     else
870         dialog.vbox.add(lbl)
871         dialog.set_default_size(200, 120)
872     end
873     if options[:bottomwidget]
874         dialog.vbox.add(options[:bottomwidget])
875     end
876     if options[:okcancel]
877         cancel = dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
878         if ! options[:bottomwidget]
879             cancel.grab_focus
880         end
881         dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
882     else
883         ok = dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK).grab_focus
884         if ! options[:bottomwidget]
885             ok.grab_focus
886         end
887     end
888
889     if options[:pos_centered]
890         dialog.window_position = Gtk::Window::POS_CENTER
891     else
892         dialog.window_position = Gtk::Window::POS_MOUSE
893     end
894
895     if options[:linkurl]
896         linkbut = Gtk::Button.new('')
897         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
898         linkbut.signal_connect('clicked') {
899             open_url(options[0][:linkurl] + '/index.html')
900             dialog.response(Gtk::Dialog::RESPONSE_OK)
901             set_mousecursor_normal
902         }
903         linkbut.relief = Gtk::RELIEF_NONE
904         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
905         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
906         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
907     end
908
909     dialog.show_all
910
911     if options[:stuff_connector]
912         options[:stuff_connector].call({ :dialog => dialog })
913     end
914                                         
915     if !options[:not_transient]
916         dialog.transient_for = parent
917         dialog.run { |response|
918             if options[:data_getter]
919                 options[:data_getter].call
920             end
921             dialog.destroy
922             if options[:okcancel]
923                 return response == Gtk::Dialog::RESPONSE_OK
924             end
925         }
926     else
927         dialog.signal_connect('response') { dialog.destroy }
928     end
929 end
930
931 def view_entry(entry)
932     if entry.type == 'image'
933         show_popup($main_window,
934                    utf8(`exif -m '#{entry.path}'`),
935                    { :title => utf8(_("EXIF data of %s") % File.basename(entry.path)), :nomarkup => true, :scrolled => true, :not_transient => true })
936     else
937         cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
938         msg 2, cmd
939         system(cmd)
940     end
941 end
942
943 def thumbnail_keypressed(entry, event)
944     if event.state & Gdk::Window::MOD1_MASK != 0
945         #- ALT pressed: Alt-Left and Alft-Right rotate
946         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
947             if event.keyval == Gdk::Keyval::GDK_Left
948                 entry.angle = (entry.angle - 90) % 360
949             else
950                 entry.angle = (entry.angle + 90) % 360
951             end
952             entry.free_pixbuf_full
953             entry.free_pixbuf_main
954             entry.free_pixbuf_thumbnail
955             show_pixbufs_present
956             $mainview.redraw
957             entry.image.pixbuf = entry.pixbuf_thumbnail
958             if $config['rotate-set-exif'] == 'true' && entry.type == 'image'
959                 Exif.set_orientation(entry.path, angle_to_exif_orientation(entry.angle))
960             end
961         end
962
963     elsif event.state & Gdk::Window::CONTROL_MASK != 0
964         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo, Ctrl-space for recentre
965         if event.keyval == Gdk::Keyval::GDK_z
966             perform_undo
967         end
968         if event.keyval == Gdk::Keyval::GDK_r
969             perform_redo
970         end
971         if event.keyval == Gdk::Keyval::GDK_space
972             shown = $mainview.get_shown_entry
973             shown and autoscroll_if_needed(shown.button, true)
974         end
975
976     else
977         removed_before = entry.removed
978         label_before = entry.labeled
979
980         if event.keyval == Gdk::Keyval::GDK_Delete
981             if ! FileTest.writable?(entry.path)
982                 show_popup($main_window, utf8(_("Notice: no write access to '%s', permission will be denied at execute step.") % entry.path))
983             end
984             entry.removed = true
985             entry.labeled = nil
986             entry.show_bg
987             update_visibility(entry)
988             $mainview.show_next_entry(entry)
989
990             save_undo(_("set for removal"),
991                       proc {
992                           entry.removed = removed_before
993                           entry.labeled = label_before
994                           entry.show_bg
995                           update_visibility(entry)
996                           if entry.button.visible?
997                               $mainview.try_show_entry(entry)
998                           end
999                           proc {
1000                               entry.removed = true
1001                               entry.labeled = nil
1002                               entry.show_bg
1003                               update_visibility(entry)
1004                               if entry.button.visible?
1005                                   $mainview.try_show_entry(entry)
1006                               end
1007                           }
1008                       })
1009
1010         elsif event.keyval == Gdk::Keyval::GDK_space
1011             if entry.labeled
1012                 msg = _("Cleared label")
1013             elsif entry.removed
1014                 msg = _("Cleared set for removal")
1015             end
1016             entry.removed = false
1017             entry.labeled = nil
1018             entry.show_bg
1019             $mainview.show_next_entry(entry)
1020
1021             save_undo(msg,
1022                       proc {
1023                           entry.removed = removed_before
1024                           entry.labeled = label_before
1025                           entry.show_bg
1026                           $mainview.try_show_entry(entry)
1027                           proc {
1028                               entry.removed = false
1029                               entry.labeled = nil
1030                               entry.show_bg
1031                               $mainview.try_show_entry(entry)
1032                           }
1033                       })
1034
1035         elsif event.keyval == Gdk::Keyval::GDK_Return
1036             view_entry(entry)
1037
1038         elsif event.keyval == Gdk::Keyval::GDK_Home
1039             index = 0
1040             while $allentries[index] && $allentries[index].button && !visible($allentries[index])
1041                 index += 1
1042             end
1043             if $allentries[index] && $allentries[index].button
1044                 $allentries[index].button.grab_focus
1045             end
1046
1047         elsif event.keyval == Gdk::Keyval::GDK_End
1048             index = $allentries.size - 1
1049             while $allentries[index] && $allentries[index].button && !visible($allentries[index])
1050                 index += 1
1051             end
1052             if $allentries[index] && $allentries[index].button
1053                 $allentries[index].button.grab_focus
1054             end
1055
1056         else
1057             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
1058             if char =~ /^[a-zA-z0-9]$/
1059                 label = $labels[char]
1060                 
1061                 if label.nil?
1062                     vb = Gtk::VBox.new(false, 0)
1063                     vb.pack_start(labelentry = Gtk::Entry.new.set_text(char), false, false)
1064                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::ColorButton.new))
1065                     color = bt.color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
1066                     bt.signal_connect('color-set') { color = bt.color }
1067                     text = nil
1068                     labelentry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
1069                         while $labels.has_key?(labelentry.text[0,1])
1070                             labelentry.text = labelentry.text.sub(/./, '')
1071                         end
1072                     }
1073                     if show_popup($main_window,
1074                                   utf8(_("You typed the text character '%s', which is not associated with a label.\nType in the full name of the label below to create a new one.")) % char,
1075                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = labelentry.text },
1076                                     :stuff_connector => proc { |stuff| labelentry.select_region(0, 0)
1077                                                                        labelentry.position = -1
1078                                                                        labelentry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
1079                         if text.length > 0
1080                             char = text[0,1]  #- in case it changed
1081                             label = Label.new(text)
1082                             label.color = color
1083                             $labels[char] = label
1084                             $ordered_labels << label
1085                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
1086                             $labels_vbox.pack_start(label.button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1087                             label.button.active = true
1088                             label.button.signal_connect('toggled') { update_all_visibilities }
1089                             evt.modify_bg(Gtk::StateType::NORMAL, label.color)
1090                             evt.modify_bg(Gtk::StateType::PRELIGHT, label.color.lighter.lighter)
1091                             evt.modify_bg(Gtk::StateType::ACTIVE, label.color.lighter)
1092                         end
1093                     end
1094                 end
1095
1096                 if label
1097                     entry.removed = false
1098                     entry.labeled = label
1099                     entry.show_bg
1100                     update_visibility(entry)
1101                     $mainview.show_next_entry(entry)
1102
1103                     save_undo(_("set label"),
1104                               proc {
1105                                   entry.removed = removed_before
1106                                   entry.labeled = label_before
1107                                   entry.show_bg
1108                                   update_visibility(entry)
1109                                   if entry.button.visible?
1110                                       $mainview.try_show_entry(entry)
1111                                   end
1112                                   proc {
1113                                       entry.removed = false
1114                                       entry.labeled = label
1115                                       entry.show_bg
1116                                       update_visibility(entry)
1117                                       if entry.button.visible?
1118                                           $mainview.try_show_entry(entry)
1119                                       end
1120                                   }
1121                               })
1122                 end
1123             end
1124         end
1125     end
1126 end
1127
1128 def sb_msg(msg)
1129     $statusbar.pop(0)
1130     if msg
1131         $statusbar.push(0, utf8(msg))
1132     end
1133 end
1134
1135 def show_entry(entry, i, tips)
1136     #- scope entry
1137     #msg 3, "showing entry #{entry}"
1138     entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
1139     if entry.type == 'video'
1140         entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1141                                            pack_start(entry.image).
1142                                            pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
1143         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1144         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1145     else
1146         entry.button = Gtk::Button.new.add(entry.image)
1147     end
1148     tips.set_tip(entry.button, entry.get_beautified_name, nil)
1149     $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
1150     entry.button.signal_connect('clicked') {
1151         shown = $mainview.get_shown_entry
1152         if shown != entry
1153             shown and shown.alignment.set(0.5, 1, 0, 0)
1154             entry.alignment.set(0.5, 0, 0, 0)
1155             autoscroll_if_needed(entry.button, false)
1156             $mainview.set_shown_entry(entry)
1157         end
1158     }
1159     entry.button.signal_connect('button-press-event') { |w, event|
1160         if entry.type == 'video' && event.event_type == Gdk::Event::BUTTON2_PRESS
1161             video_view(entry)
1162         end
1163     }
1164     entry.button.signal_connect('focus-in-event') { entry.button.clicked }
1165     entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
1166     if i == 0
1167         entry.button.grab_focus
1168     end
1169     update_visibility(entry)
1170 end
1171
1172 def show_entries(allentries)
1173     sb_msg(_("Loading images..."))
1174     $loading_progressbar.fraction = 0
1175     $loading_progressbar.text = utf8(_("Loading... %d%") % 0)
1176     $loading_progressbar.show
1177     t1 = Time.now
1178     total_loaded_files = 0
1179     total_loaded_size = 0
1180     i = 0
1181     tips = Gtk::Tooltips.new
1182     while i < allentries.size
1183         begin
1184             entry = allentries[i]
1185             if i == 0
1186                 loaded_pixbuf = entry.pixbuf_main
1187             else
1188                 loaded_pixbuf = entry.pixbuf_thumbnail
1189             end
1190         rescue InterruptedLoading
1191             redo
1192         end
1193
1194         if $allentries != allentries
1195             #- loaded another directory while this one was not yet finished
1196             msg 3, "allentries differ, stopping this deprecated load"
1197             return
1198         end
1199
1200         if loaded_pixbuf
1201             show_entry(entry, i, tips)
1202             if $allentries != allentries
1203                 #- loaded another directory while this one was not yet finished
1204                 msg 3, "allentries differ, stopping this deprecated load"
1205                 return
1206             end
1207
1208             total_loaded_size += file_size(entry.path)
1209             total_loaded_files += 1
1210             i += 1
1211             if i > $config['preload-distance'].to_i && i <= $config['preload-distance'].to_i * 2
1212                 #- when we're at preload distance, begin preloading to preload distance
1213                 begin
1214                     allentries[i - $config['preload-distance'].to_i].pixbuf_main
1215                 rescue InterruptedLoading
1216                 end
1217             end
1218             if i == $config['preload-distance'].to_i * 2 + 1
1219                 #- when we're after double preload distance, activate normal preloading
1220                 $preloader_allowed = true
1221             end
1222             
1223         else
1224             allentries.delete_at(i)
1225         end
1226         $loading_progressbar.fraction = i.to_f / allentries.size
1227         $loading_progressbar.text = utf8(_("Loading... %d%") % (100 * $loading_progressbar.fraction))
1228         if $quit
1229             return
1230         end
1231         if i % 25 == 0
1232             gc
1233         end
1234     end
1235     $preloader_allowed = true
1236     if i <= $config['preload-distance'].to_i * 2
1237         #- not yet preloaded correctly
1238         run_preloader
1239     end
1240     sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ total_loaded_files, commify(total_loaded_size / 1024), Time.now - t1 ])
1241     $loading_progressbar.hide
1242     $execute.sensitive = true
1243 end
1244
1245 def reset_all
1246     reset_labels
1247     reset_thumbnails
1248     $mainview.set_shown_entry(nil)
1249     sb_msg(nil)
1250     $preloader_allowed = false
1251     $execute.sensitive = false
1252 end
1253
1254 def open_dir(*paths)
1255     #- remove visual stuff, so that user will see something is happening
1256     reset_all
1257     sb_msg(_("Scanning source directory... %s") % "")
1258     Gtk.main_iteration while Gtk.events_pending?
1259
1260     for path in paths
1261         path = File.expand_path(path.sub(%r|/$|, ''))
1262         $workingdir = path
1263         entries = []
1264         if File.directory?(path)
1265             examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
1266             #- validate first
1267             examined_dirs.each { |dir|
1268                 if dir =~ /'/
1269                     return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
1270                 end
1271                 Dir.entries(dir).each { |file|
1272                     if file =~ /'/ && type = entry2type(file) && type == 'video'
1273                         return utf8(_("Videos can't contain a single quote character ('), sorry: %s") % "#{dir}/#{file}")
1274                     end
1275                 }
1276             }
1277             
1278             #- scan for populate second
1279             examined_dirs.each { |dir|
1280                 if File.basename(dir) =~ /^\./
1281                     msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
1282                     next
1283                 end
1284                 entries += Dir.entries(dir).collect { |file| File.join(dir, file) }
1285                 sb_msg(_("Scanning source directory... %s") % (_("%d entries found") % entries.size))
1286                 Gtk.main_iteration while Gtk.events_pending?
1287             }
1288
1289         else
1290             entries << path
1291         end
1292
1293         if $sort_by_exif_date
1294             dates = {}
1295             entries.each { |file|
1296                 date_time = Exif.datetimeoriginal(file)
1297                 if ! date_time.nil?
1298                     dates[file] = date_time
1299                 end
1300             }
1301             entries = smartsort(entries, dates)
1302         else
1303             entries.sort!
1304         end
1305         entries.each { |file|
1306             type = entry2type(file)
1307             if type
1308                 if File.directory?(path)
1309                     $allentries << Entry.new(file, type, file[path.length + 1 .. -1])
1310                 else
1311                     $allentries << Entry.new(file, type, file)
1312                 end
1313             end
1314         }
1315     end
1316     return nil
1317 end
1318
1319 def open_dir_popup
1320     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
1321                                     nil,
1322                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
1323                                     nil,
1324                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1325     fc.transient_for = $main_window
1326     if $workingdir
1327         fc.current_folder = $workingdir
1328     end
1329     ok = false
1330     load = false
1331     while !ok
1332         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1333             msg = open_dir(fc.filename)
1334             if msg
1335                 show_popup(fc, msg)
1336                 ok = false
1337             else
1338                 ok = true
1339                 load = true
1340             end
1341         else
1342             ok = true
1343         end
1344     end
1345     fc.destroy
1346     if load
1347         show_entries($allentries)
1348     end
1349 end
1350
1351 def try_quit(*options)
1352     if ! $allentries.detect { |e| e.removed || e.labeled } || show_popup($main_window,
1353                                                                          utf8(_("You have not executed the classification. Are you sure you want to quit?")),
1354                                                                          { :okcancel => true })
1355         Gtk.main_quit
1356         $quit = true
1357         return false
1358     else
1359         return true
1360     end
1361 end
1362
1363 def execute
1364     dialog = Gtk::Dialog.new
1365     dialog.title = utf8(_("Booh message"))
1366
1367     vb1 = Gtk::VBox.new(false, 5)
1368     label = Gtk::Label.new.set_markup(utf8(_("You're about to <b>execute</b> actions on the marked images.\nPlease confirm below the actions. You cannot undo this operation!")))
1369     vb1.pack_start(label, false, false)
1370
1371     lastpath = $workingdir
1372
1373     table = Gtk::Table.new(0, 0, false)
1374     table.set_row_spacings(5)
1375     table.set_column_spacings(5)
1376     table.attach(Gtk::Label.new.set_markup(utf8(_("<b>Label name:</b>"))).set_justify(Gtk::Justification::CENTER), 0, 1, 0, 1, Gtk::FILL, Gtk::FILL, 5, 0)
1377     table.attach(Gtk::Label.new.set_markup(utf8(_("<b>Amount of pictures:</b>"))).set_justify(Gtk::Justification::CENTER), 1, 2, 0, 1, Gtk::FILL, Gtk::FILL, 5, 0)
1378     table.attach(Gtk::Label.new.set_markup(utf8(_("<b>Pictures examples:</b>"))).set_justify(Gtk::Justification::CENTER), 2, 3, 0, 1, Gtk::FILL, Gtk::FILL, 5, 0)
1379     table.attach(Gtk::Label.new.set_markup(utf8(_("<b>Action to perform:</b>"))).set_justify(Gtk::Justification::CENTER), 3, 4, 0, 1, Gtk::FILL, Gtk::FILL, 5, 0)
1380     add_row = proc { |row, name, color, truthproc, normal|
1381         table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(Gtk::EventBox.new.add(Gtk::Label.new.set_markup(name)).modify_bg(Gtk::StateType::NORMAL, color)),
1382                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1383         counter = 0
1384         examples = Gtk::HBox.new(false, 5)
1385         $allentries.each { |entry|
1386             if truthproc.call(entry)
1387                 counter += 1
1388                 if counter < 4
1389                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1390                     if entry.type == 'video'
1391                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1392                                                   pack_start(thumbnail).
1393                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1394                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1395                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1396                     end
1397                     examples.pack_start(thumbnail, false, false)
1398                 elsif counter == 4
1399                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1400                 end
1401             end
1402         }
1403         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1404         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1405
1406         if counter == 0
1407             return {}
1408         end
1409
1410         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1411         iter = combostore.append
1412         if normal
1413             iter[0] = $main_window.render_icon(Gtk::Stock::PASTE, Gtk::IconSize::MENU)
1414             iter[1] = utf8(_("Copy to:"))
1415             iter = combostore.append
1416             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1417             iter[1] = utf8(_("Move to:"))
1418         else
1419             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1420             iter[1] = utf8(_("Permanently remove"))
1421         end
1422         iter = combostore.append
1423         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1424         iter[1] = utf8(_("Do nothing"))
1425         combo = Gtk::ComboBox.new(combostore)
1426         combo.active = 0
1427         renderer = Gtk::CellRendererPixbuf.new
1428         combo.pack_start(renderer, false)
1429         combo.set_attributes(renderer, :pixbuf => 0)
1430         renderer = Gtk::CellRendererText.new
1431         combo.pack_start(renderer, true)
1432         combo.set_attributes(renderer, :text => 1)
1433
1434         if normal
1435             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1436             pathbutton.signal_connect('clicked') {
1437                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1438                                                 nil,
1439                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1440                                                 nil,
1441                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1442                 fc.transient_for = dialog
1443                 if lastpath
1444                     fc.current_folder = lastpath
1445                 end
1446                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1447                     pathlabel.text = fc.filename
1448                     pathlabel.set_alignment(0, 0.5)
1449                 end
1450                 lastpath = fc.filename
1451                 fc.destroy
1452             }
1453             combo.signal_connect('changed') {
1454                 pathbutton.sensitive = combo.active <= 1
1455             }
1456             vb = Gtk::VBox.new(false, 5)
1457             vb.pack_start(combo, false, false)
1458             vb.pack_start(pathbutton, false, false)
1459             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1460             { :combo => combo, :pathlabel => pathlabel }
1461         else
1462             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1463             { :combo => combo }
1464         end
1465     }
1466     stuff = {}
1467     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), $color_red, proc { |entry| entry.removed }, false)
1468     $ordered_labels.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1469     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1470
1471     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1472     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1473     check_removal = Gtk::CheckButton.new(utf8(_("I have noticed I am about to permanently remove the %d above mentioned pictures (total %s kB).") % [ toremove_amount, toremove_size ]))
1474     if toremove_amount > 0
1475         vb1.pack_start(check_removal, false, false)
1476         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1477             check_removal.sensitive = widget.active == 0
1478         }
1479     end
1480
1481     dialog.vbox.add(vb1)
1482
1483     dialog.set_default_size(800, 600)
1484     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1485     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1486     dialog.window_position = Gtk::Window::POS_MOUSE
1487     dialog.transient_for = $main_window
1488
1489     dialog.show_all
1490
1491     while true
1492         dialog.run { |response|        
1493             if response == Gtk::Dialog::RESPONSE_OK
1494                 problem = false
1495                 if toremove_amount > 0 && stuff['toremove'][:combo].active == 0
1496                     if ! check_removal.active?
1497                         show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1498                         problem = true
1499                         break
1500                     end
1501                     $allentries.each { |entry|
1502                         if entry.removed
1503                             if ! FileTest.writable?(entry.path)
1504                                 show_popup(dialog, utf8(_("Sorry, permission denied to remove '%s'.") % [ entry.path ]))
1505                                 problem = true
1506                                 break
1507                             end
1508                         end
1509                     }
1510                 end
1511                 label2entries = {}
1512                 $labels.values.each { |label| label2entries[label] = [] }
1513                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1514                 stuff.keys.each { |key|
1515                     if key.is_a?(Label) && stuff[key][:combo] && stuff[key][:combo].active <= 1
1516                         destination = stuff[key][:pathlabel].text
1517                         if destination[0] != ?/
1518                             show_popup(dialog, utf8(_("You have not selected a directory where to move/copy %s.") % key.name))
1519                             problem = true
1520                             break
1521                         end
1522                         begin
1523                             Dir.mkdir(destination)
1524                         rescue Errno::EEXIST
1525                         end
1526                         begin
1527                             st = File.stat(destination)
1528                         rescue
1529                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not createable.") % [destination, key.name]))
1530                             problem = true
1531                             break
1532                         end
1533                         if ! st.directory? || ! st.writable?
1534                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not writable.") % [destination, key.name]))
1535                             problem = true
1536                             break
1537                         end
1538                         label2entries[key].each { |entry|
1539                             begin
1540                                 File.stat(File.join(destination, File.basename(entry.path)))
1541                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in directory '%s'.") % [ File.basename(entry.path), destination ]))
1542                                 problem = true
1543                                 break
1544                             rescue
1545                             end
1546                         }
1547                         if stuff[key][:combo].active == 1
1548                             label2entries[key].each { |entry|
1549                                 if ! FileTest.writable?(entry.path)
1550                                     show_popup(dialog, utf8(_("Sorry, permission denied to move '%s'.") % [ entry.path ]))
1551                                     problem = true
1552                                     break
1553                                 end
1554                             }
1555                         end
1556                         if problem
1557                             break
1558                         end
1559                     end
1560                 }
1561                 if ! problem
1562                     begin
1563                         moved = 0
1564                         copied = 0
1565                         stuff.keys.each { |key|
1566                             if key.is_a?(Label) && stuff[key][:combo] && stuff[key][:combo].active <= 1
1567                                 destination = stuff[key][:pathlabel].text
1568                                 label2entries[key].each { |entry|
1569                                     if stuff[key][:combo].active == 0
1570                                         system("cp -dp '#{entry.path}' '#{destination}'") or raise "failed to copy '#{entry.path}'"
1571                                         copied += 1
1572                                     elsif stuff[key][:combo].active == 1
1573                                         system("mv '#{entry.path}' '#{destination}'") or raise "failed to move '#{entry.path}'"
1574                                         moved += 1
1575                                     end
1576                                 }
1577                             end
1578                         }
1579                         removed = 0
1580                         if stuff['toremove'][:combo] && stuff['toremove'][:combo].active == 0
1581                             $allentries.each { |entry|
1582                                 if entry.removed
1583                                     File.delete(entry.path)
1584                                     removed += 1
1585                                 end
1586                             }
1587                         end
1588                     rescue
1589                         msg 1, "woops: #{$!}"
1590                         show_popup(dialog, utf8(_("Unexpected error: '%s'.") % $!))
1591                     end
1592                     show_popup(dialog, utf8(_("Successfully moved %d files, copied %d file, and removed %d files.") % [ moved, copied, removed ]))
1593                     dialog.destroy
1594                     reset_all
1595                     return
1596                 end
1597
1598             else
1599                 dialog.destroy
1600                 return
1601             end
1602         }
1603     end
1604 end
1605
1606 def visible(entry)
1607     if ! entry
1608         #- just "executed"
1609         return
1610     end
1611     if ! entry.button
1612         #- not yet loaded
1613         return
1614     end
1615     if entry.labeled
1616         if entry.labeled.button.active?
1617             return true
1618         else
1619             return false
1620         end
1621     elsif entry.removed
1622         if $toremove_button.active?
1623             return true
1624         else
1625             return false
1626         end
1627     else
1628         if $unlabelled_button.active?
1629             return true
1630         else
1631             return false
1632         end
1633     end
1634 end
1635
1636 def update_visibility(entry)
1637     v = visible(entry)
1638     if v.nil?
1639         return
1640     end
1641     if v
1642         entry.button.show
1643     else
1644         entry.button.hide
1645     end
1646 end
1647         
1648 def update_all_visibilities_aux
1649     $allentries.each { |entry|
1650         update_visibility(entry)
1651     }
1652     shown = $mainview.get_shown_entry
1653     shown or return
1654     while shown.button && ! shown.button.visible? && shown != $allentries.last
1655         shown = $allentries[$allentries.index(shown) + 1]
1656     end 
1657     if shown.button && shown.button.visible?
1658         shown.button.grab_focus
1659         return
1660     end
1661     $allentries.reverse.each { |entry|
1662         if entry.button && entry.button.visible?
1663             entry.button.grab_focus
1664             return
1665         end
1666     }
1667 end
1668
1669 def update_all_visibilities
1670     update_all_visibilities_aux
1671     Gtk.main_iteration while Gtk.events_pending?
1672     shown = $mainview.get_shown_entry
1673     shown and autoscroll_if_needed(shown.button, false)
1674 end
1675
1676
1677 def preferences
1678     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1679                              $main_window,
1680                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1681                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1682                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1683
1684     tooltips = Gtk::Tooltips.new
1685
1686     table_y = 0
1687
1688     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1689     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1690                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1691     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1692                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1693     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1694
1695     table_y += 1
1696     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
1697                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1698     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1699                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1700     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1701
1702     table_y += 1
1703     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Thumbnails height: ")))),
1704                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1705     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(thumbnails_height = Gtk::SpinButton.new(32, 256, 16).set_value($config['thumbnails-height'].to_i)),
1706                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1707     tooltips.set_tip(thumbnails_height, utf8(_("The desired height of the thumbnails in the thumbnails line of the bottom")), nil)
1708
1709     table_y += 1
1710     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1711                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1712     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(preload_distance = Gtk::SpinButton.new(0, 50, 1).set_value($config['preload-distance'].to_i)),
1713                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1714     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1715
1716     table_y += 1
1717     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1718                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1719     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1720                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1721     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1722                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1723                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1724     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1725     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1726     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1727                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1728                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1729     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1730     cache_memfree_radio.signal_connect('toggled') {
1731         if cache_memfree_radio.active?
1732             cache_memfree_label.sensitive = true
1733             cache_specify_label.sensitive = false
1734         else
1735             cache_specify_label.sensitive = true
1736             cache_memfree_label.sensitive = false
1737         end
1738     }
1739     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1740     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1741         cache_memfree_spin.value = $1.to_i
1742     else
1743         cache_specify_spin.value = $config['cache-memory-use'].to_i / 1024
1744     end
1745
1746     table_y += 1
1747     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1748                0, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1749     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1750     update_exif_orientation_check.active = $config['rotate-set-exif'] == 'true'
1751
1752     dialog.vbox.show_all
1753     dialog.run { |response|
1754         if response == Gtk::Dialog::RESPONSE_OK
1755             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1756             $config['browser'] = from_utf8(browser_entry.text)
1757             $config['thumbnails-height'] = thumbnails_height.value
1758             $config['preload-distance'] = preload_distance.value
1759             $config['rotate-set-exif'] = update_exif_orientation_check.active?.to_s
1760             if cache_memfree_radio.active?
1761                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1762             else
1763                 $config['cache-memory-use'] = cache_specify_spin.value.to_i * 1024
1764             end
1765             set_cache_memory_use_figure
1766         end
1767     }
1768     dialog.destroy
1769 end
1770
1771 def perform_undo
1772     if $undo_mb.sensitive?
1773         $redo_mb.sensitive = true
1774         if not more_undoes = UndoHandler.undo($statusbar)
1775             $undo_mb.sensitive = false
1776         end
1777     end
1778 end
1779
1780 def perform_redo
1781     if $redo_mb.sensitive?
1782         $undo_mb.sensitive = true
1783         if not more_redoes = UndoHandler.redo($statusbar)
1784             $redo_mb.sensitive = false
1785         end
1786     end
1787 end
1788
1789 def create_menubar    
1790     #- menu
1791     mb = Gtk::MenuBar.new
1792
1793     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1794     filesubmenu = Gtk::Menu.new
1795     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1796     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1797     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1798     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1799     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1800     filemenu.set_submenu(filesubmenu)
1801     mb.append(filemenu)
1802
1803     open.signal_connect('activate') { open_dir_popup }
1804     $execute.signal_connect('activate') { execute }
1805     quit.signal_connect('activate') { try_quit }
1806
1807     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1808     editsubmenu = Gtk::Menu.new
1809     editsubmenu.append($undo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1810     editsubmenu.append($redo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1811     editsubmenu.append(              Gtk::SeparatorMenuItem.new)
1812     editsubmenu.append(prefs       = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1813     editmenu.set_submenu(editsubmenu)
1814     mb.append(editmenu)
1815
1816     $undo_mb.signal_connect('activate') { perform_undo }
1817     $redo_mb.signal_connect('activate') { perform_redo }
1818     prefs.signal_connect('activate') { preferences }
1819     
1820     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1821     helpsubmenu = Gtk::Menu.new
1822     helpsubmenu.append(howto = Gtk::ImageMenuItem.new(Gtk::Stock::HELP))
1823     helpsubmenu.append(speed = Gtk::ImageMenuItem.new(utf8(_("Speedup: key shortcuts"))))
1824     speed.image = Gtk::Image.new("#{$FPATH}/images/stock-info-16.png")
1825     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1826     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1827     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1828     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1829     helpmenu.set_submenu(helpsubmenu)
1830     mb.append(helpmenu)
1831
1832     howto.signal_connect('activate') {
1833         show_popup($main_window, utf8(_("<span size='large' weight='bold'>Help</span>
1834
1835 1. Open a directory with <span foreground='darkblue'>File/Open</span>; the classifier will scan it (including subdirectories) and
1836 show thumbnails for all photos and videos at the bottom.
1837
1838 2. You can then navigate through images with the <span foreground='darkblue'>Left/Right</span> keyboard keys, or by <span foreground='darkblue'>clicking</span>
1839 on thumbnails.
1840
1841 3. You may associate a <span foreground='darkblue'>label</span> to each thumbnail. Either hit the <span foreground='darkblue'>Delete</span> key to associate
1842 the built-in <i>to remove</i> label, or hit any alphabetical key to associate a label you define.
1843 The first time you hit a key without any label associated, a popup will ask for the full
1844 name of this label, and what color you want. To clear the current label, hit the <span foreground='darkblue'>Space</span> key.
1845
1846 4. To help you better view what thumbnails are associated to your labels, you may <span foreground='darkblue'>hide</span>
1847 some of them by unchecking the labels checkboxes on the left.
1848
1849 5. Once you're finished reviewing all thumbnails, use <span foreground='darkblue'>File/Execute</span> to execute the desired
1850 actions according to associated labels. You can permanently remove (or not) images with
1851 the <i>to remove</i> label, and copy or move images with the labels you defined.
1852 ")), { :pos_centered => true, :not_transient => true })
1853     }
1854     speed.signal_connect('activate') {
1855         show_popup($main_window, utf8(_("<span size='large' weight='bold'>Key shortcuts</span>
1856
1857 <span foreground='darkblue'>Left/Right</span>: move left and right in images
1858 <span foreground='darkblue'>Enter</span>: 'view' current image: for images, display EXIF data; for videos, play it
1859 <span foreground='darkblue'>Alt-Left/Right</span>: rotate current image clockwise/counter-clockwise
1860 <span foreground='darkblue'>Delete</span>: assign the 'to remove' label on current image
1861 <span foreground='darkblue'>Space</span>: clear any label on current image
1862 <span foreground='darkblue'>Control-z</span>: undo
1863 <span foreground='darkblue'>Control-r</span>: redo
1864 <span foreground='darkblue'>Control-Space</span>: recenter thumbnails on current item
1865
1866 Any alphabetical key will assign (or popup for) the associated label on current image.
1867 ")), { :pos_centered => true, :not_transient => true })
1868     }
1869     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial') }
1870     about.signal_connect('activate') { call_about }
1871
1872
1873     #- no toolbar, to save height
1874
1875     return mb
1876 end
1877
1878 def reset_labels
1879     for child in $labels_vbox.children
1880         $labels_vbox.remove(child)
1881     end
1882     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1883     $labels = {}
1884     $ordered_labels = []
1885     lbl = Gtk::Label.new.set_markup(utf8(_("<i>unlabelled</i>")))
1886     $labels_vbox.pack_start($unlabelled_button = Gtk::CheckButton.new.add(Gtk::EventBox.new.add(lbl)).show_all)
1887     $unlabelled_button.active = true
1888     $unlabelled_button.signal_connect('toggled') { update_all_visibilities }
1889     lbl = Gtk::Label.new.set_markup(utf8(_("<i>to remove</i>")))
1890     $labels_vbox.pack_start($toremove_button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1891     $toremove_button.active = true
1892     $toremove_button.signal_connect('toggled') { update_all_visibilities }
1893     evt.modify_bg(Gtk::StateType::NORMAL, $color_red)
1894     evt.modify_bg(Gtk::StateType::PRELIGHT, $color_red.lighter.lighter)
1895     evt.modify_bg(Gtk::StateType::ACTIVE, $color_red.lighter)
1896 end
1897
1898 def cleanup_loaders
1899     $allentries.each { |e| 
1900         if ! e.loader.nil?
1901             begin
1902                 e.loader.close
1903             rescue
1904                 #- ignore loader errors, at that point they are fairly normal
1905             end
1906         end
1907     }
1908 end
1909
1910 def reset_thumbnails
1911     cleanup_loaders
1912     $allentries = []
1913     if $preloader_running
1914         $preloader_force_exit = true
1915     end
1916     for child in $imagesline.children
1917         $imagesline.remove(child)
1918     end
1919     set_imagesline_size_request
1920 end
1921
1922 def set_imagesline_size_request
1923     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + Entry.thumbnails_height/4)
1924 end
1925
1926 def create_main_window
1927
1928     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1929     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1930
1931     mb = create_menubar
1932
1933     main_vbox = Gtk::VBox.new(false, 0)
1934     main_vbox.pack_start(mb, false, false)
1935     mainview_hbox = Gtk::HBox.new
1936     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 1, 1).add(left_vbox = Gtk::VBox.new(false, 5)), false, true)
1937     left_vbox.pack_start(($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1938     left_vbox.pack_end($loading_progressbar = Gtk::ProgressBar.new.set_text(utf8(_("Loading... %d%") % 0)), false, true)
1939     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1940     main_vbox.pack_start(mainview_hbox, true, true)
1941     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1942     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1943     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1944     main_vbox.pack_start($imagesline_sw, false, false)
1945     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1946
1947     set_imagesline_size_request
1948
1949     $main_window = create_window
1950     $main_window.add(main_vbox)
1951     $main_window.signal_connect('delete-event') {
1952         try_quit
1953     }
1954
1955     #- read/save size and position of window
1956     if $config['pos-x'] && $config['pos-y']
1957         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1958     else
1959         $main_window.window_position = Gtk::Window::POS_CENTER
1960     end
1961     msg 3, "size: #{$config['width']}x#{$config['height']}"
1962     $main_window.set_default_size(($config['width'] || 800).to_i, ($config['height'] || 600).to_i)
1963     $main_window.signal_connect('configure-event') {
1964         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1965         x, y = $main_window.window.root_origin
1966         width, height = $main_window.window.size
1967         $config['pos-x'] = x
1968         $config['pos-y'] = y
1969         $config['width'] = width
1970         $config['height'] = height
1971         false
1972     }
1973
1974     $main_window.show_all
1975     $loading_progressbar.hide
1976 end
1977
1978
1979 handle_options
1980 read_config
1981 Gtk.init
1982
1983
1984 create_main_window
1985 check_config
1986
1987 if ARGV[0]
1988     if msg = open_dir(*ARGV)
1989         puts msg
1990     else
1991         Gtk.idle_add {
1992             show_entries($allentries)
1993             false
1994         }
1995     end
1996 end
1997 Gtk.main
1998
1999 cleanup_loaders
2000
2001 write_config