avoid unneeded memory allocation on loader cancelation, it can grow a lot :/
[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     def cancel_loader
414         if ! @loader.nil?
415             #- avoid unneeded memory allocation
416             @loader.signal_handler_disconnect(@area_prepared_cb)
417             begin
418                 @loader.close
419             rescue
420                 #- ignore loader errors, at that point they are fairly normal, we're canceling a partial load
421             end
422             @loader = nil
423         end
424     end
425
426     private
427     def load_into_pixbuf_full
428         if @pixbuf_full.nil?
429             msg 3, ">>> load_into_pixbuf_full #{path}"
430             @pixbuf_full = load_into_pixbuf_at_size { |w, h|
431                 if @angle == 0
432                     if w > @@max_width
433                         #- save memory and speedup (+35%) loading 
434                         [ w * (factor = @@max_width.to_f/w), h * factor ]
435                     else
436                         [ w, h ]
437                     end
438                 else
439                     if h > @@max_width
440                         [ w * (factor = @@max_width.to_f/h), h * factor ]
441                     else
442                         [ w, h ]
443                     end
444                 end
445             }
446             show_pixbufs_present
447         end
448     end
449
450     def load_into_pixbuf_at_size(&specify_size)
451         if @type == 'video'
452             if @video_image_path.nil?
453                 orig_base = File.basename(path)
454                 tmpdir = gen_video_thumbnail(path, false, 0)
455                 if tmpdir.nil?
456                     return
457                 end
458                 @video_image_path = "#{tmpdir}/00000001.jpg"
459             end
460             image_path = @video_image_path
461         else
462             image_path = @path
463         end
464         if @angle.nil?
465             if @type == 'image'
466                 @angle = guess_rotate(image_path)
467             else
468                 @angle = 0
469             end
470         end
471         begin
472             #- use a pixbuf loader and check Gtk.events_pending? on each chunk, to keep the UI responsive even
473             #- if loaded pictures are several MBs large
474             if @loader.nil?
475                 @loader = Gdk::PixbufLoader.new
476                 @loader.signal_connect('size-prepared') { |l, w, h|
477                     @loader.set_size(*specify_size.call(w, h))
478                 }
479                 @area_prepared_cb = @loader.signal_connect('area-prepared') { @loaded_pixbuf = @loader.pixbuf }
480                 @loader_offset = 0
481             end
482             msg 3, "calling load_not_freezing_ui on #{image_path}, offset #{@loader_offset}"
483             @loader_offset = @loader.load_not_freezing_ui(image_path, @loader_offset)
484             if @loader_offset > 0
485                 #- interrupted
486                 raise InterruptedLoading
487             end
488             @loader = nil
489             if @loaded_pixbuf.nil?
490                 raise "Loaded pixbuf nil - #{path} #{image_path}"
491             end
492         rescue
493             msg 0, "Cannot load #{image_path}: #{$!}"
494             return
495         ensure
496             if @video_image_path && @loader.nil?
497                 File.delete(@video_image_path)
498                 Dir.rmdir(File.dirname(@video_image_path))
499                 @video_image_path = nil
500             end
501         end
502         if @loaded_pixbuf
503             if @angle != 0
504                 msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
505                 @loaded_pixbuf = rotate_pixbuf(@loaded_pixbuf, @angle)
506             end
507         end
508         retval = @loaded_pixbuf
509         @loaded_pixbuf = nil
510         return retval
511     end
512
513     def to_s
514         @path
515     end
516 end
517
518 $allentries = []
519
520 def gc
521     start = Time.now
522     GC.start
523     msg 3, "GC in #{Time.now - start} s"
524 end
525
526 def free_cache_if_needed
527     i = $allentries.index($mainview.get_shown_entry)
528     return if i.nil?
529     if get_mem > $config['cache-memory-use-figure']
530         msg 3, "too much RSS, triggering GC"
531         gc
532     end
533     if get_mem < $config['cache-memory-use-figure']
534         return
535     end
536     msg 3, "too much RSS, freeing some cache"
537     start = Time.now
538     freed = 0
539     ($allentries.size - 1).downto($config['preload-distance'].to_i + 1) { |j|
540         index = i + j
541         if i + j < $allentries.size
542             $allentries[i + j].free_pixbuf_full
543             if $allentries[i + j].free_pixbuf_main
544                 freed += 1
545             end
546         end
547         if i - j >= 0
548             $allentries[i - j].free_pixbuf_full
549             if $allentries[i - j].free_pixbuf_main
550                 freed += 1
551             end
552         end
553         if freed >= 10
554             gc
555             if get_mem < $config['cache-memory-use-figure'] * 3 / 4
556                 msg 3, "RSS down enough - freeing done in #{Time.now - start} s"
557                 show_pixbufs_present
558                 return
559             end
560             freed = 0
561         end
562     }
563     msg 3, "freeing done in #{Time.now - start} s"
564     show_pixbufs_present
565 end
566
567 def run_preloader_real
568     msg 3, "*** >> main preloading triggered..."
569     if $mainview.get_shown_entry
570         free_cache_if_needed
571         if $config['preload-distance'].to_i == 0
572             return true
573         end
574         index = $allentries.index($mainview.get_shown_entry)
575         index_right = index
576         index_left = index
577         loaded_right = 0
578         loaded_left = 0
579         right_done = false
580         left_done = false
581         loaded = []
582         while ! right_done || ! left_done
583             if ! right_done
584                 index_right += 1
585                 while index_right < $allentries.size && ! visible($allentries[index_right])
586                     index_right += 1
587                 end
588                 if index_right == $allentries.size
589                     right_done = true
590                 else
591                     if ! $allentries[index_right].pixbuf_main_present?
592                         msg 3, "preloading #{$allentries[index_right].path}"
593                         begin
594                             $allentries[index_right].pixbuf_main
595                         rescue InterruptedLoading
596                             msg 3, "*** >>>> interrupted, rerun"
597                             return false
598                         end
599                     end
600                     loaded << index_right
601                     loaded_right += 1
602                     if loaded_right == $config['preload-distance'].to_i
603                         right_done = true
604                     end
605                 end
606             end
607
608             if ! left_done
609                 index_left -= 1
610                 while index_left >= 0 && ! visible($allentries[index_left])
611                     index_left -= 1
612                 end
613                 if index_left == -1
614                     left_done = true
615                 else
616                     if ! $allentries[index_left].pixbuf_main_present?
617                         msg 3, "preloading #{$allentries[index_left].path}"
618                         begin
619                             $allentries[index_left].pixbuf_main
620                         rescue InterruptedLoading
621                             msg 3, "*** >>>> interrupted, rerun"
622                             return false
623                         end
624                     end
625                     loaded << index_left
626                     loaded_left += 1
627                     if loaded_left == $config['preload-distance'].to_i
628                         left_done = true
629                     end
630                 end
631             end
632
633             #- in case just loaded another directory
634             if $preloader_force_exit
635                 $preloader_force_exit = false
636                 return true
637             end
638             #- in case moved fast
639             if index != $allentries.index($mainview.get_shown_entry)
640                 msg 3, "*** >>>> moved already, rerun"
641                 return false
642             end
643         end
644     end
645     msg 3, "*** << main preloading finished"
646     return true
647 end
648
649 def run_preloader
650     if ! $preloader_allowed
651         msg 3, "*** preloader not yet allowed"
652         return
653     end
654
655     if $preloader_running
656         msg 3, "preloader already running"
657         return
658     end
659     msg 3, "run preloader"
660     $preloader_running = true
661     Gtk.idle_add {
662         msg 3, "begin preloader from timeout "
663         if run_preloader_real
664             $preloader_running = false
665             false
666         else
667             true
668         end
669     }
670 end
671
672 class MainView < Gtk::DrawingArea
673
674     @@borders_thickness = 5
675     @@borders_length = 25
676     @@redraw_pending = nil
677
678     def MainView.borders_thickness
679         return @@borders_thickness
680     end
681
682     def MainView.get_usable_width(available_width)
683         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
684     end
685
686     def MainView.get_usable_height(available_height)
687         return available_height - @@borders_thickness * 2
688     end
689     
690     def initialize
691         super()
692         signal_connect('expose-event') { draw }
693         signal_connect('configure-event') { update_shown }
694     end
695
696     def try_show_entry(entry)
697         if entry && entry.button
698             if entry.button.has_focus?
699                 redraw
700             else
701                 entry.button.grab_focus
702             end
703         end
704     end
705
706     def set_shown_entry(entry)
707         t1 = Time.now
708         if entry && entry == @entry
709             return
710         end
711         if entry && ! entry.button
712             #- not loaded yet
713             return
714         end
715         @entry = entry
716         @entry and msg 3, "*** set entry to #{@entry.path}"
717         redraw
718         msg 3, "entry shown in: #{Time.now - t1} s"
719     end
720
721     def get_shown_entry
722         return @entry
723     end
724
725     def show_next_entry(entry)
726         index = $allentries.index(entry)
727         if index < $allentries.size - 1
728             index += 1
729         end
730         while index < $allentries.size - 1 && $allentries[index] && $allentries[index].button && ! $allentries[index].button.visible?
731             index += 1
732         end
733         while $allentries[index] && $allentries[index].button && ! $allentries[index].button.visible? && index > 0
734             index -= 1
735         end
736         if index < $allentries.size && $allentries[index] && $allentries[index].button && $allentries[index].button.visible?
737             try_show_entry($allentries[index])
738         end
739     end
740
741     def redraw
742         if @@redraw_pending
743             msg 3, "redraw already pending"
744             return
745         end
746         msg 3, "redraw"
747         @@redraw_pending = Gtk.idle_add {
748             msg 3, "begin redraw from timeout "
749             begin
750                 msg 3, "try redraw from timeout"
751                 redraw_real
752                 @@redraw_pending = nil
753                 run_preloader
754                 false
755             rescue InterruptedLoading
756                 msg 3, "interrupted, will retry"
757                 true
758             end
759         }
760     end
761
762     def redraw_real
763         @entry and sb_msg(_("Selected %s") % @entry.get_beautified_name)
764         if ! update_shown
765             return
766         end
767         w, h = window.size
768         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
769         window.clear
770         draw
771         window.end_paint
772     end
773
774     def update_shown
775         if @entry
776             msg 3, "################################################ trying to show #{@entry.path}"
777             pixbuf = @entry.pixbuf_main
778             if pixbuf
779                 @pixbuf = pixbuf
780                 width, height = window.size 
781                 @xpos = (width - @pixbuf.width)/2
782                 @ypos = (height - @pixbuf.height)/2
783                 return true
784             else
785                 return false
786             end
787         else
788             @pixbuf = nil
789             return true
790         end
791     end
792
793     def draw
794         if @pixbuf
795             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
796             if @entry && @entry.type == 'video'
797                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
798             end
799             if @entry && ! @entry.outline_color.nil?
800                 gc = Gdk::GC.new(window)
801                 colormap.alloc_color(@entry.outline_color, false, true)
802                 gc.set_foreground(@entry.outline_color)
803                 if @entry.type == 'video'
804                     xleft = @xpos - $videoborder_pixbuf.width
805                     xright = @xpos + @pixbuf.width + $videoborder_pixbuf.width
806                 else
807                     xleft = @xpos
808                     xright = @xpos + @pixbuf.width
809                 end
810                 window.draw_polygon(gc, true, [[xleft - @@borders_thickness, @ypos - @@borders_thickness],
811                                                [xright + @@borders_thickness, @ypos - @@borders_thickness],
812                                                [xright + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
813                                                [xleft - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
814                                                [xleft - @@borders_thickness, @ypos - 1],
815                                                [xleft - 1, @ypos - 1],
816                                                [xleft - 1, @ypos + @pixbuf.height + 1],
817                                                [xright + 1, @ypos + @pixbuf.height + 1],
818                                                [xright + 1, @ypos - 1],
819                                                [xleft - @@borders_thickness, @ypos - 1]])
820             end
821         end
822     end
823 end
824
825 def autoscroll_if_needed(button, center)
826     xpos_left = button.allocation.x
827     xpos_right = button.allocation.x + button.allocation.width
828     hadj = $imagesline_sw.hadjustment
829     current_minx_visible = hadj.value
830     current_maxx_visible = hadj.value + hadj.page_size
831     if ! center
832         if xpos_left < current_minx_visible
833             #- autoscroll left
834             newval = hadj.value - (current_minx_visible - xpos_left)
835             hadj.value = newval
836         elsif xpos_right > current_maxx_visible
837             #- autoscroll right
838             newval = hadj.value + (xpos_right - current_maxx_visible)
839             if newval > hadj.upper - hadj.page_size
840                 newval = hadj.upper - hadj.page_size
841             end
842             hadj.value = newval
843         end
844     else
845         hadj.value = clamp((xpos_left + xpos_right) / 2 - hadj.page_size / 2, 0, hadj.upper - hadj.page_size)
846     end
847 end
848
849 def show_popup(parent, msg, *options)
850     dialog = Gtk::Dialog.new
851     if options[0]
852         options = options[0]
853     else
854         options = {}
855     end
856     if options[:title]
857         dialog.title = options[:title]
858     else
859         dialog.title = utf8(_("Booh message"))
860     end
861     lbl = Gtk::Label.new
862     if options[:nomarkup]
863         lbl.text = msg
864     else
865         lbl.markup = msg
866     end
867     if options[:centered]
868         lbl.set_justify(Gtk::Justification::CENTER)
869     end
870     if options[:selectable]
871         lbl.selectable = true
872     end
873     if options[:topwidget]
874         dialog.vbox.add(options[0][:topwidget])
875     end
876     if options[:scrolled]
877         sw = Gtk::ScrolledWindow.new(nil, nil)
878         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
879         sw.add_with_viewport(lbl)
880         dialog.vbox.add(sw)
881         dialog.set_default_size(500, 600)
882     else
883         dialog.vbox.add(lbl)
884         dialog.set_default_size(200, 120)
885     end
886     if options[:bottomwidget]
887         dialog.vbox.add(options[:bottomwidget])
888     end
889     if options[:okcancel]
890         cancel = dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
891         if ! options[:bottomwidget]
892             cancel.grab_focus
893         end
894         dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
895     else
896         ok = dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK).grab_focus
897         if ! options[:bottomwidget]
898             ok.grab_focus
899         end
900     end
901
902     if options[:pos_centered]
903         dialog.window_position = Gtk::Window::POS_CENTER
904     else
905         dialog.window_position = Gtk::Window::POS_MOUSE
906     end
907
908     if options[:linkurl]
909         linkbut = Gtk::Button.new('')
910         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
911         linkbut.signal_connect('clicked') {
912             open_url(options[0][:linkurl] + '/index.html')
913             dialog.response(Gtk::Dialog::RESPONSE_OK)
914             set_mousecursor_normal
915         }
916         linkbut.relief = Gtk::RELIEF_NONE
917         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
918         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
919         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
920     end
921
922     dialog.show_all
923
924     if options[:stuff_connector]
925         options[:stuff_connector].call({ :dialog => dialog })
926     end
927                                         
928     if !options[:not_transient]
929         dialog.transient_for = parent
930         dialog.run { |response|
931             if options[:data_getter]
932                 options[:data_getter].call
933             end
934             dialog.destroy
935             if options[:okcancel]
936                 return response == Gtk::Dialog::RESPONSE_OK
937             end
938         }
939     else
940         dialog.signal_connect('response') { dialog.destroy }
941     end
942 end
943
944 def view_entry(entry)
945     if entry.type == 'image'
946         show_popup($main_window,
947                    utf8(`exif -m '#{entry.path}'`),
948                    { :title => utf8(_("EXIF data of %s") % File.basename(entry.path)), :nomarkup => true, :scrolled => true, :not_transient => true })
949     else
950         cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
951         msg 2, cmd
952         system(cmd)
953     end
954 end
955
956 def thumbnail_keypressed(entry, event)
957     if event.state & Gdk::Window::MOD1_MASK != 0
958         #- ALT pressed: Alt-Left and Alft-Right rotate
959         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
960             if event.keyval == Gdk::Keyval::GDK_Left
961                 entry.angle = (entry.angle - 90) % 360
962             else
963                 entry.angle = (entry.angle + 90) % 360
964             end
965             entry.free_pixbuf_full
966             entry.free_pixbuf_main
967             entry.free_pixbuf_thumbnail
968             show_pixbufs_present
969             $mainview.redraw
970             entry.image.pixbuf = entry.pixbuf_thumbnail
971             if $config['rotate-set-exif'] == 'true' && entry.type == 'image'
972                 Exif.set_orientation(entry.path, angle_to_exif_orientation(entry.angle))
973             end
974         end
975
976     elsif event.state & Gdk::Window::CONTROL_MASK != 0
977         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo, Ctrl-space for recentre
978         if event.keyval == Gdk::Keyval::GDK_z
979             perform_undo
980         end
981         if event.keyval == Gdk::Keyval::GDK_r
982             perform_redo
983         end
984         if event.keyval == Gdk::Keyval::GDK_space
985             shown = $mainview.get_shown_entry
986             shown and autoscroll_if_needed(shown.button, true)
987         end
988
989     else
990         removed_before = entry.removed
991         label_before = entry.labeled
992
993         if event.keyval == Gdk::Keyval::GDK_Delete
994             if ! FileTest.writable?(entry.path)
995                 show_popup($main_window, utf8(_("Notice: no write access to '%s', permission will be denied at execute step.") % entry.path))
996             end
997             entry.removed = true
998             entry.labeled = nil
999             entry.show_bg
1000             update_visibility(entry)
1001             $mainview.show_next_entry(entry)
1002
1003             save_undo(_("set for removal"),
1004                       proc {
1005                           entry.removed = removed_before
1006                           entry.labeled = label_before
1007                           entry.show_bg
1008                           update_visibility(entry)
1009                           if entry.button.visible?
1010                               $mainview.try_show_entry(entry)
1011                           end
1012                           proc {
1013                               entry.removed = true
1014                               entry.labeled = nil
1015                               entry.show_bg
1016                               update_visibility(entry)
1017                               if entry.button.visible?
1018                                   $mainview.try_show_entry(entry)
1019                               end
1020                           }
1021                       })
1022
1023         elsif event.keyval == Gdk::Keyval::GDK_space
1024             if entry.labeled
1025                 msg = _("Cleared label")
1026             elsif entry.removed
1027                 msg = _("Cleared set for removal")
1028             end
1029             entry.removed = false
1030             entry.labeled = nil
1031             entry.show_bg
1032             $mainview.show_next_entry(entry)
1033
1034             save_undo(msg,
1035                       proc {
1036                           entry.removed = removed_before
1037                           entry.labeled = label_before
1038                           entry.show_bg
1039                           $mainview.try_show_entry(entry)
1040                           proc {
1041                               entry.removed = false
1042                               entry.labeled = nil
1043                               entry.show_bg
1044                               $mainview.try_show_entry(entry)
1045                           }
1046                       })
1047
1048         elsif event.keyval == Gdk::Keyval::GDK_Return
1049             view_entry(entry)
1050
1051         elsif event.keyval == Gdk::Keyval::GDK_Home
1052             index = 0
1053             while $allentries[index] && $allentries[index].button && !visible($allentries[index])
1054                 index += 1
1055             end
1056             if $allentries[index] && $allentries[index].button
1057                 $allentries[index].button.grab_focus
1058             end
1059
1060         elsif event.keyval == Gdk::Keyval::GDK_End
1061             index = $allentries.size - 1
1062             while $allentries[index] && $allentries[index].button && !visible($allentries[index])
1063                 index += 1
1064             end
1065             if $allentries[index] && $allentries[index].button
1066                 $allentries[index].button.grab_focus
1067             end
1068
1069         else
1070             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
1071             if char =~ /^[a-zA-z0-9]$/
1072                 label = $labels[char]
1073                 
1074                 if label.nil?
1075                     vb = Gtk::VBox.new(false, 0)
1076                     vb.pack_start(labelentry = Gtk::Entry.new.set_text(char), false, false)
1077                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::ColorButton.new))
1078                     color = bt.color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
1079                     bt.signal_connect('color-set') { color = bt.color }
1080                     text = nil
1081                     labelentry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
1082                         while $labels.has_key?(labelentry.text[0,1])
1083                             labelentry.text = labelentry.text.sub(/./, '')
1084                         end
1085                     }
1086                     if show_popup($main_window,
1087                                   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,
1088                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = labelentry.text },
1089                                     :stuff_connector => proc { |stuff| labelentry.select_region(0, 0)
1090                                                                        labelentry.position = -1
1091                                                                        labelentry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
1092                         if text.length > 0
1093                             char = text[0,1]  #- in case it changed
1094                             label = Label.new(text)
1095                             label.color = color
1096                             $labels[char] = label
1097                             $ordered_labels << label
1098                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
1099                             $labels_vbox.pack_start(label.button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1100                             label.button.active = true
1101                             label.button.signal_connect('toggled') { update_all_visibilities }
1102                             evt.modify_bg(Gtk::StateType::NORMAL, label.color)
1103                             evt.modify_bg(Gtk::StateType::PRELIGHT, label.color.lighter.lighter)
1104                             evt.modify_bg(Gtk::StateType::ACTIVE, label.color.lighter)
1105                         end
1106                     end
1107                 end
1108
1109                 if label
1110                     entry.removed = false
1111                     entry.labeled = label
1112                     entry.show_bg
1113                     update_visibility(entry)
1114                     $mainview.show_next_entry(entry)
1115
1116                     save_undo(_("set label"),
1117                               proc {
1118                                   entry.removed = removed_before
1119                                   entry.labeled = label_before
1120                                   entry.show_bg
1121                                   update_visibility(entry)
1122                                   if entry.button.visible?
1123                                       $mainview.try_show_entry(entry)
1124                                   end
1125                                   proc {
1126                                       entry.removed = false
1127                                       entry.labeled = label
1128                                       entry.show_bg
1129                                       update_visibility(entry)
1130                                       if entry.button.visible?
1131                                           $mainview.try_show_entry(entry)
1132                                       end
1133                                   }
1134                               })
1135                 end
1136             end
1137         end
1138     end
1139 end
1140
1141 def sb_msg(msg)
1142     $statusbar.pop(0)
1143     if msg
1144         $statusbar.push(0, utf8(msg))
1145     end
1146 end
1147
1148 def show_entry(entry, i, tips)
1149     #- scope entry
1150     #msg 3, "showing entry #{entry}"
1151     entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
1152     if entry.type == 'video'
1153         entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1154                                            pack_start(entry.image).
1155                                            pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
1156         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1157         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1158     else
1159         entry.button = Gtk::Button.new.add(entry.image)
1160     end
1161     tips.set_tip(entry.button, entry.get_beautified_name, nil)
1162     $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
1163     entry.button.signal_connect('clicked') {
1164         shown = $mainview.get_shown_entry
1165         if shown != entry
1166             shown and shown.alignment.set(0.5, 1, 0, 0)
1167             entry.alignment.set(0.5, 0, 0, 0)
1168             autoscroll_if_needed(entry.button, false)
1169             $mainview.set_shown_entry(entry)
1170         end
1171     }
1172     entry.button.signal_connect('button-press-event') { |w, event|
1173         if entry.type == 'video' && event.event_type == Gdk::Event::BUTTON2_PRESS
1174             video_view(entry)
1175         end
1176     }
1177     entry.button.signal_connect('focus-in-event') { entry.button.clicked }
1178     entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
1179     if i == 0
1180         entry.button.grab_focus
1181     end
1182     update_visibility(entry)
1183 end
1184
1185 def show_entries(allentries)
1186     sb_msg(_("Loading images..."))
1187     $loading_progressbar.fraction = 0
1188     $loading_progressbar.text = utf8(_("Loading... %d%") % 0)
1189     $loading_progressbar.show
1190     t1 = Time.now
1191     total_loaded_files = 0
1192     total_loaded_size = 0
1193     i = 0
1194     tips = Gtk::Tooltips.new
1195     while i < allentries.size
1196         begin
1197             entry = allentries[i]
1198             if i == 0
1199                 loaded_pixbuf = entry.pixbuf_main
1200             else
1201                 loaded_pixbuf = entry.pixbuf_thumbnail
1202             end
1203         rescue InterruptedLoading
1204             redo
1205         end
1206
1207         if $allentries != allentries
1208             #- loaded another directory while this one was not yet finished
1209             msg 3, "allentries differ, stopping this deprecated load"
1210             return
1211         end
1212
1213         if loaded_pixbuf
1214             show_entry(entry, i, tips)
1215             if $allentries != allentries
1216                 #- loaded another directory while this one was not yet finished
1217                 msg 3, "allentries differ, stopping this deprecated load"
1218                 return
1219             end
1220
1221             total_loaded_size += file_size(entry.path)
1222             total_loaded_files += 1
1223             i += 1
1224             if i > $config['preload-distance'].to_i && i <= $config['preload-distance'].to_i * 2
1225                 #- when we're at preload distance, begin preloading to preload distance
1226                 begin
1227                     allentries[i - $config['preload-distance'].to_i].pixbuf_main
1228                 rescue InterruptedLoading
1229                 end
1230             end
1231             if i == $config['preload-distance'].to_i * 2 + 1
1232                 #- when we're after double preload distance, activate normal preloading
1233                 $preloader_allowed = true
1234             end
1235             
1236         else
1237             allentries.delete_at(i)
1238         end
1239         $loading_progressbar.fraction = i.to_f / allentries.size
1240         $loading_progressbar.text = utf8(_("Loading... %d%") % (100 * $loading_progressbar.fraction))
1241         if $quit
1242             return
1243         end
1244         if i % 25 == 0
1245             gc
1246         end
1247     end
1248     $preloader_allowed = true
1249     if i <= $config['preload-distance'].to_i * 2
1250         #- not yet preloaded correctly
1251         run_preloader
1252     end
1253     sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ total_loaded_files, commify(total_loaded_size / 1024), Time.now - t1 ])
1254     $loading_progressbar.hide
1255     $execute.sensitive = true
1256 end
1257
1258 def reset_all
1259     reset_labels
1260     reset_thumbnails
1261     $mainview.set_shown_entry(nil)
1262     sb_msg(nil)
1263     $preloader_allowed = false
1264     $execute.sensitive = false
1265 end
1266
1267 def open_dir(*paths)
1268     #- remove visual stuff, so that user will see something is happening
1269     reset_all
1270     sb_msg(_("Scanning source directory... %s") % "")
1271     Gtk.main_iteration while Gtk.events_pending?
1272
1273     for path in paths
1274         path = File.expand_path(path.sub(%r|/$|, ''))
1275         $workingdir = path
1276         entries = []
1277         if File.directory?(path)
1278             examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
1279             #- validate first
1280             examined_dirs.each { |dir|
1281                 if dir =~ /'/
1282                     return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
1283                 end
1284                 begin
1285                     Dir.entries(dir).each { |file|
1286                         if file =~ /'/ && type = entry2type(file) && type == 'video'
1287                             return utf8(_("Videos can't contain a single quote character ('), sorry: %s") % "#{dir}/#{file}")
1288                         end
1289                     }
1290                 rescue
1291                     puts "Failed to open directory #{dir}: #{$!}"
1292                 end
1293             }
1294             
1295             #- scan for populate second
1296             examined_dirs.each { |dir|
1297                 if File.basename(dir) =~ /^\./
1298                     msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
1299                     next
1300                 end
1301                 begin
1302                     entries += Dir.entries(dir).collect { |file| File.join(dir, file) }
1303                 rescue
1304                     #- already puts'ed 10 lines upper
1305                 end
1306                 sb_msg(_("Scanning source directory... %s") % (_("%d entries found") % entries.size))
1307                 Gtk.main_iteration while Gtk.events_pending?
1308             }
1309
1310         else
1311             entries << path
1312         end
1313
1314         if $sort_by_exif_date
1315             dates = {}
1316             entries.each { |file|
1317                 date_time = Exif.datetimeoriginal(file)
1318                 if ! date_time.nil?
1319                     dates[file] = date_time
1320                 end
1321             }
1322             entries = smartsort(entries, dates)
1323         else
1324             entries.sort!
1325         end
1326         entries.each { |file|
1327             type = entry2type(file)
1328             if type
1329                 if File.directory?(path)
1330                     $allentries << Entry.new(file, type, file[path.length + 1 .. -1])
1331                 else
1332                     $allentries << Entry.new(file, type, file)
1333                 end
1334             end
1335         }
1336     end
1337     return nil
1338 end
1339
1340 def open_dir_popup
1341     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
1342                                     nil,
1343                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
1344                                     nil,
1345                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1346     fc.transient_for = $main_window
1347     if $workingdir
1348         fc.current_folder = $workingdir
1349     end
1350     ok = false
1351     load = false
1352     while !ok
1353         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1354             msg = open_dir(fc.filename)
1355             if msg
1356                 show_popup(fc, msg)
1357                 ok = false
1358             else
1359                 ok = true
1360                 load = true
1361             end
1362         else
1363             ok = true
1364         end
1365     end
1366     fc.destroy
1367     if load
1368         show_entries($allentries)
1369     end
1370 end
1371
1372 def try_quit(*options)
1373     if ! $allentries.detect { |e| e.removed || e.labeled } || show_popup($main_window,
1374                                                                          utf8(_("You have not executed the classification. Are you sure you want to quit?")),
1375                                                                          { :okcancel => true })
1376         Gtk.main_quit
1377         $quit = true
1378         return false
1379     else
1380         return true
1381     end
1382 end
1383
1384 def execute
1385     dialog = Gtk::Dialog.new
1386     dialog.title = utf8(_("Booh message"))
1387
1388     vb1 = Gtk::VBox.new(false, 5)
1389     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!")))
1390     vb1.pack_start(label, false, false)
1391
1392     lastpath = $workingdir
1393
1394     table = Gtk::Table.new(0, 0, false)
1395     table.set_row_spacings(5)
1396     table.set_column_spacings(5)
1397     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)
1398     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)
1399     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)
1400     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)
1401     add_row = proc { |row, name, color, truthproc, normal|
1402         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)),
1403                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1404         counter = 0
1405         examples = Gtk::HBox.new(false, 5)
1406         $allentries.each { |entry|
1407             if truthproc.call(entry)
1408                 counter += 1
1409                 if counter < 4
1410                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1411                     if entry.type == 'video'
1412                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1413                                                   pack_start(thumbnail).
1414                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1415                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1416                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1417                     end
1418                     examples.pack_start(thumbnail, false, false)
1419                 elsif counter == 4
1420                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1421                 end
1422             end
1423         }
1424         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1425         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1426
1427         if counter == 0
1428             return {}
1429         end
1430
1431         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1432         iter = combostore.append
1433         if normal
1434             iter[0] = $main_window.render_icon(Gtk::Stock::PASTE, Gtk::IconSize::MENU)
1435             iter[1] = utf8(_("Copy to:"))
1436             iter = combostore.append
1437             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1438             iter[1] = utf8(_("Move to:"))
1439         else
1440             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1441             iter[1] = utf8(_("Permanently remove"))
1442         end
1443         iter = combostore.append
1444         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1445         iter[1] = utf8(_("Do nothing"))
1446         combo = Gtk::ComboBox.new(combostore)
1447         combo.active = 0
1448         renderer = Gtk::CellRendererPixbuf.new
1449         combo.pack_start(renderer, false)
1450         combo.set_attributes(renderer, :pixbuf => 0)
1451         renderer = Gtk::CellRendererText.new
1452         combo.pack_start(renderer, true)
1453         combo.set_attributes(renderer, :text => 1)
1454
1455         if normal
1456             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1457             pathbutton.signal_connect('clicked') {
1458                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1459                                                 nil,
1460                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1461                                                 nil,
1462                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1463                 fc.transient_for = dialog
1464                 if lastpath
1465                     fc.current_folder = lastpath
1466                 end
1467                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1468                     pathlabel.text = fc.filename
1469                     pathlabel.set_alignment(0, 0.5)
1470                 end
1471                 lastpath = fc.filename
1472                 fc.destroy
1473             }
1474             combo.signal_connect('changed') {
1475                 pathbutton.sensitive = combo.active <= 1
1476             }
1477             vb = Gtk::VBox.new(false, 5)
1478             vb.pack_start(combo, false, false)
1479             vb.pack_start(pathbutton, false, false)
1480             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1481             { :combo => combo, :pathlabel => pathlabel }
1482         else
1483             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1484             { :combo => combo }
1485         end
1486     }
1487     stuff = {}
1488     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), $color_red, proc { |entry| entry.removed }, false)
1489     $ordered_labels.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1490     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1491
1492     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1493     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1494     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 ]))
1495     if toremove_amount > 0
1496         vb1.pack_start(check_removal, false, false)
1497         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1498             check_removal.sensitive = widget.active == 0
1499         }
1500     end
1501
1502     dialog.vbox.add(vb1)
1503
1504     dialog.set_default_size(800, 600)
1505     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1506     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1507     dialog.window_position = Gtk::Window::POS_MOUSE
1508     dialog.transient_for = $main_window
1509
1510     dialog.show_all
1511
1512     while true
1513         dialog.run { |response|        
1514             if response == Gtk::Dialog::RESPONSE_OK
1515                 problem = false
1516                 if toremove_amount > 0 && stuff['toremove'][:combo].active == 0
1517                     if ! check_removal.active?
1518                         show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1519                         problem = true
1520                         break
1521                     end
1522                     $allentries.each { |entry|
1523                         if entry.removed
1524                             if ! FileTest.writable?(entry.path)
1525                                 show_popup(dialog, utf8(_("Sorry, permission denied to remove '%s'.") % [ entry.path ]))
1526                                 problem = true
1527                                 break
1528                             end
1529                         end
1530                     }
1531                 end
1532                 label2entries = {}
1533                 $labels.values.each { |label| label2entries[label] = [] }
1534                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1535                 stuff.keys.each { |key|
1536                     if key.is_a?(Label) && stuff[key][:combo] && stuff[key][:combo].active <= 1
1537                         destination = stuff[key][:pathlabel].text
1538                         if destination[0] != ?/
1539                             show_popup(dialog, utf8(_("You have not selected a directory where to move/copy %s.") % key.name))
1540                             problem = true
1541                             break
1542                         end
1543                         begin
1544                             Dir.mkdir(destination)
1545                         rescue Errno::EEXIST
1546                         end
1547                         begin
1548                             st = File.stat(destination)
1549                         rescue
1550                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not createable.") % [destination, key.name]))
1551                             problem = true
1552                             break
1553                         end
1554                         if ! st.directory? || ! st.writable?
1555                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not writable.") % [destination, key.name]))
1556                             problem = true
1557                             break
1558                         end
1559                         label2entries[key].each { |entry|
1560                             begin
1561                                 File.stat(File.join(destination, File.basename(entry.path)))
1562                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in directory '%s'.") % [ File.basename(entry.path), destination ]))
1563                                 problem = true
1564                                 break
1565                             rescue
1566                             end
1567                         }
1568                         if stuff[key][:combo].active == 1
1569                             label2entries[key].each { |entry|
1570                                 if ! FileTest.writable?(entry.path)
1571                                     show_popup(dialog, utf8(_("Sorry, permission denied to move '%s'.") % [ entry.path ]))
1572                                     problem = true
1573                                     break
1574                                 end
1575                             }
1576                         end
1577                         if problem
1578                             break
1579                         end
1580                     end
1581                 }
1582                 if ! problem
1583                     begin
1584                         moved = 0
1585                         copied = 0
1586                         stuff.keys.each { |key|
1587                             if key.is_a?(Label) && stuff[key][:combo] && stuff[key][:combo].active <= 1
1588                                 destination = stuff[key][:pathlabel].text
1589                                 label2entries[key].each { |entry|
1590                                     if stuff[key][:combo].active == 0
1591                                         system("cp -dp '#{entry.path}' '#{destination}'") or raise "failed to copy '#{entry.path}'"
1592                                         copied += 1
1593                                     elsif stuff[key][:combo].active == 1
1594                                         system("mv '#{entry.path}' '#{destination}'") or raise "failed to move '#{entry.path}'"
1595                                         moved += 1
1596                                     end
1597                                 }
1598                             end
1599                         }
1600                         removed = 0
1601                         if stuff['toremove'][:combo] && stuff['toremove'][:combo].active == 0
1602                             $allentries.each { |entry|
1603                                 if entry.removed
1604                                     File.delete(entry.path)
1605                                     removed += 1
1606                                 end
1607                             }
1608                         end
1609                     rescue
1610                         msg 1, "woops: #{$!}"
1611                         show_popup(dialog, utf8(_("Unexpected error: '%s'.") % $!))
1612                     end
1613                     show_popup(dialog, utf8(_("Successfully moved %d files, copied %d file, and removed %d files.") % [ moved, copied, removed ]))
1614                     dialog.destroy
1615                     reset_all
1616                     return
1617                 end
1618
1619             else
1620                 dialog.destroy
1621                 return
1622             end
1623         }
1624     end
1625 end
1626
1627 def visible(entry)
1628     if ! entry
1629         #- just "executed"
1630         return
1631     end
1632     if ! entry.button
1633         #- not yet loaded
1634         return
1635     end
1636     if entry.labeled
1637         if entry.labeled.button.active?
1638             return true
1639         else
1640             return false
1641         end
1642     elsif entry.removed
1643         if $toremove_button.active?
1644             return true
1645         else
1646             return false
1647         end
1648     else
1649         if $unlabelled_button.active?
1650             return true
1651         else
1652             return false
1653         end
1654     end
1655 end
1656
1657 def update_visibility(entry)
1658     v = visible(entry)
1659     if v.nil?
1660         return
1661     end
1662     if v
1663         entry.button.show
1664     else
1665         entry.button.hide
1666     end
1667 end
1668         
1669 def update_all_visibilities_aux
1670     $allentries.each { |entry|
1671         update_visibility(entry)
1672     }
1673     shown = $mainview.get_shown_entry
1674     shown or return
1675     while shown.button && ! shown.button.visible? && shown != $allentries.last
1676         shown = $allentries[$allentries.index(shown) + 1]
1677     end 
1678     if shown.button && shown.button.visible?
1679         shown.button.grab_focus
1680         return
1681     end
1682     $allentries.reverse.each { |entry|
1683         if entry.button && entry.button.visible?
1684             entry.button.grab_focus
1685             return
1686         end
1687     }
1688 end
1689
1690 def update_all_visibilities
1691     update_all_visibilities_aux
1692     Gtk.main_iteration while Gtk.events_pending?
1693     shown = $mainview.get_shown_entry
1694     shown and autoscroll_if_needed(shown.button, false)
1695 end
1696
1697
1698 def preferences
1699     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1700                              $main_window,
1701                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1702                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1703                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1704
1705     tooltips = Gtk::Tooltips.new
1706
1707     table_y = 0
1708
1709     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1710     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1711                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1712     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1713                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1714     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1715
1716     table_y += 1
1717     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
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(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1720                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1721     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1722
1723     table_y += 1
1724     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Thumbnails height: ")))),
1725                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1726     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(thumbnails_height = Gtk::SpinButton.new(32, 256, 16).set_value($config['thumbnails-height'].to_i)),
1727                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1728     tooltips.set_tip(thumbnails_height, utf8(_("The desired height of the thumbnails in the thumbnails line of the bottom")), nil)
1729
1730     table_y += 1
1731     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1732                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1733     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)),
1734                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1735     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1736
1737     table_y += 1
1738     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1739                0, 1, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1740     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1741                1, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1742     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1743                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1744                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1745     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1746     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1747     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1748                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1749                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1750     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1751     cache_memfree_radio.signal_connect('toggled') {
1752         if cache_memfree_radio.active?
1753             cache_memfree_label.sensitive = true
1754             cache_specify_label.sensitive = false
1755         else
1756             cache_specify_label.sensitive = true
1757             cache_memfree_label.sensitive = false
1758         end
1759     }
1760     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1761     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1762         cache_memfree_spin.value = $1.to_i
1763     else
1764         cache_specify_spin.value = $config['cache-memory-use'].to_i / 1024
1765     end
1766
1767     table_y += 1
1768     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1769                0, 2, table_y, table_y + 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1770     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1771     update_exif_orientation_check.active = $config['rotate-set-exif'] == 'true'
1772
1773     dialog.vbox.show_all
1774     dialog.run { |response|
1775         if response == Gtk::Dialog::RESPONSE_OK
1776             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1777             $config['browser'] = from_utf8(browser_entry.text)
1778             $config['thumbnails-height'] = thumbnails_height.value
1779             $config['preload-distance'] = preload_distance.value
1780             $config['rotate-set-exif'] = update_exif_orientation_check.active?.to_s
1781             if cache_memfree_radio.active?
1782                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1783             else
1784                 $config['cache-memory-use'] = cache_specify_spin.value.to_i * 1024
1785             end
1786             set_cache_memory_use_figure
1787         end
1788     }
1789     dialog.destroy
1790 end
1791
1792 def perform_undo
1793     if $undo_mb.sensitive?
1794         $redo_mb.sensitive = true
1795         if not more_undoes = UndoHandler.undo($statusbar)
1796             $undo_mb.sensitive = false
1797         end
1798     end
1799 end
1800
1801 def perform_redo
1802     if $redo_mb.sensitive?
1803         $undo_mb.sensitive = true
1804         if not more_redoes = UndoHandler.redo($statusbar)
1805             $redo_mb.sensitive = false
1806         end
1807     end
1808 end
1809
1810 def create_menubar    
1811     #- menu
1812     mb = Gtk::MenuBar.new
1813
1814     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1815     filesubmenu = Gtk::Menu.new
1816     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1817     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1818     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1819     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1820     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1821     filemenu.set_submenu(filesubmenu)
1822     mb.append(filemenu)
1823
1824     open.signal_connect('activate') { open_dir_popup }
1825     $execute.signal_connect('activate') { execute }
1826     quit.signal_connect('activate') { try_quit }
1827
1828     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1829     editsubmenu = Gtk::Menu.new
1830     editsubmenu.append($undo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1831     editsubmenu.append($redo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1832     editsubmenu.append(              Gtk::SeparatorMenuItem.new)
1833     editsubmenu.append(prefs       = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1834     editmenu.set_submenu(editsubmenu)
1835     mb.append(editmenu)
1836
1837     $undo_mb.signal_connect('activate') { perform_undo }
1838     $redo_mb.signal_connect('activate') { perform_redo }
1839     prefs.signal_connect('activate') { preferences }
1840     
1841     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1842     helpsubmenu = Gtk::Menu.new
1843     helpsubmenu.append(howto = Gtk::ImageMenuItem.new(Gtk::Stock::HELP))
1844     helpsubmenu.append(speed = Gtk::ImageMenuItem.new(utf8(_("Speedup: key shortcuts"))))
1845     speed.image = Gtk::Image.new("#{$FPATH}/images/stock-info-16.png")
1846     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1847     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1848     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1849     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1850     helpmenu.set_submenu(helpsubmenu)
1851     mb.append(helpmenu)
1852
1853     howto.signal_connect('activate') {
1854         show_popup($main_window, utf8(_("<span size='large' weight='bold'>Help</span>
1855
1856 1. Open a directory with <span foreground='darkblue'>File/Open</span>; the classifier will scan it (including subdirectories) and
1857 show thumbnails for all photos and videos at the bottom.
1858
1859 2. You can then navigate through images with the <span foreground='darkblue'>Left/Right</span> keyboard keys, or by <span foreground='darkblue'>clicking</span>
1860 on thumbnails.
1861
1862 3. You may associate a <span foreground='darkblue'>label</span> to each thumbnail. Either hit the <span foreground='darkblue'>Delete</span> key to associate
1863 the built-in <i>to remove</i> label, or hit any alphabetical key to associate a label you define.
1864 The first time you hit a key without any label associated, a popup will ask for the full
1865 name of this label, and what color you want. To clear the current label, hit the <span foreground='darkblue'>Space</span> key.
1866
1867 4. To help you better view what thumbnails are associated to your labels, you may <span foreground='darkblue'>hide</span>
1868 some of them by unchecking the labels checkboxes on the left.
1869
1870 5. Once you're finished reviewing all thumbnails, use <span foreground='darkblue'>File/Execute</span> to execute the desired
1871 actions according to associated labels. You can permanently remove (or not) images with
1872 the <i>to remove</i> label, and copy or move images with the labels you defined.
1873 ")), { :pos_centered => true, :not_transient => true })
1874     }
1875     speed.signal_connect('activate') {
1876         show_popup($main_window, utf8(_("<span size='large' weight='bold'>Key shortcuts</span>
1877
1878 <span foreground='darkblue'>Left/Right</span>: move left and right in images
1879 <span foreground='darkblue'>Enter</span>: 'view' current image: for images, display EXIF data; for videos, play it
1880 <span foreground='darkblue'>Alt-Left/Right</span>: rotate current image clockwise/counter-clockwise
1881 <span foreground='darkblue'>Delete</span>: assign the 'to remove' label on current image
1882 <span foreground='darkblue'>Space</span>: clear any label on current image
1883 <span foreground='darkblue'>Control-z</span>: undo
1884 <span foreground='darkblue'>Control-r</span>: redo
1885 <span foreground='darkblue'>Control-Space</span>: recenter thumbnails on current item
1886
1887 Any alphabetical key will assign (or popup for) the associated label on current image.
1888 ")), { :pos_centered => true, :not_transient => true })
1889     }
1890     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial') }
1891     about.signal_connect('activate') { call_about }
1892
1893
1894     #- no toolbar, to save height
1895
1896     return mb
1897 end
1898
1899 def reset_labels
1900     for child in $labels_vbox.children
1901         $labels_vbox.remove(child)
1902     end
1903     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1904     $labels = {}
1905     $ordered_labels = []
1906     lbl = Gtk::Label.new.set_markup(utf8(_("<i>unlabelled</i>")))
1907     $labels_vbox.pack_start($unlabelled_button = Gtk::CheckButton.new.add(Gtk::EventBox.new.add(lbl)).show_all)
1908     $unlabelled_button.active = true
1909     $unlabelled_button.signal_connect('toggled') { update_all_visibilities }
1910     lbl = Gtk::Label.new.set_markup(utf8(_("<i>to remove</i>")))
1911     $labels_vbox.pack_start($toremove_button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1912     $toremove_button.active = true
1913     $toremove_button.signal_connect('toggled') { update_all_visibilities }
1914     evt.modify_bg(Gtk::StateType::NORMAL, $color_red)
1915     evt.modify_bg(Gtk::StateType::PRELIGHT, $color_red.lighter.lighter)
1916     evt.modify_bg(Gtk::StateType::ACTIVE, $color_red.lighter)
1917 end
1918
1919 def cleanup_loaders
1920     $allentries.each { |e| 
1921         e.cancel_loader
1922     }
1923 end
1924
1925 def reset_thumbnails
1926     cleanup_loaders
1927     $allentries = []
1928     if $preloader_running
1929         $preloader_force_exit = true
1930     end
1931     for child in $imagesline.children
1932         $imagesline.remove(child)
1933     end
1934     set_imagesline_size_request
1935 end
1936
1937 def set_imagesline_size_request
1938     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + Entry.thumbnails_height/4)
1939 end
1940
1941 def create_main_window
1942
1943     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1944     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1945
1946     mb = create_menubar
1947
1948     main_vbox = Gtk::VBox.new(false, 0)
1949     main_vbox.pack_start(mb, false, false)
1950     mainview_hbox = Gtk::HBox.new
1951     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 1, 1).add(left_vbox = Gtk::VBox.new(false, 5)), false, true)
1952     left_vbox.pack_start(($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1953     left_vbox.pack_end($loading_progressbar = Gtk::ProgressBar.new.set_text(utf8(_("Loading... %d%") % 0)), false, true)
1954     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1955     main_vbox.pack_start(mainview_hbox, true, true)
1956     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1957     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1958     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1959     main_vbox.pack_start($imagesline_sw, false, false)
1960     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1961
1962     set_imagesline_size_request
1963
1964     $main_window = create_window
1965     $main_window.add(main_vbox)
1966     $main_window.signal_connect('delete-event') {
1967         try_quit
1968     }
1969
1970     #- read/save size and position of window
1971     if $config['pos-x'] && $config['pos-y']
1972         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1973     else
1974         $main_window.window_position = Gtk::Window::POS_CENTER
1975     end
1976     msg 3, "size: #{$config['width']}x#{$config['height']}"
1977     $main_window.set_default_size(($config['width'] || 800).to_i, ($config['height'] || 600).to_i)
1978     $main_window.signal_connect('configure-event') {
1979         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1980         x, y = $main_window.window.root_origin
1981         width, height = $main_window.window.size
1982         $config['pos-x'] = x
1983         $config['pos-y'] = y
1984         $config['width'] = width
1985         $config['height'] = height
1986         false
1987     }
1988
1989     $main_window.show_all
1990     $loading_progressbar.hide
1991 end
1992
1993
1994 handle_options
1995 read_config
1996 Gtk.init
1997
1998
1999 create_main_window
2000 check_config
2001
2002 if ARGV[0]
2003     if msg = open_dir(*ARGV)
2004         puts msg
2005     else
2006         Gtk.idle_add {
2007             show_entries($allentries)
2008             false
2009         }
2010     end
2011 end
2012 Gtk.main
2013
2014 cleanup_loaders
2015
2016 write_config