remove multithreading; load only thumbnails to quicken loading
[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) 2004-2006 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 '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
44     [ '--verbose-level', '-v', GetoptLong::REQUIRED_ARGUMENT, _("Set max verbosity level (0: errors, 1: warnings, 2: important messages, 3: other messages)") ],
45     [ '--sort-by-exif-date', '-s', GetoptLong::NO_ARGUMENT, _("Sort entries by EXIF date") ],
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 '--verbose-level'
68                 $verbose_level = arg.to_i
69
70             when '--sort-by-exif-date'
71                 $sort_by_exif_date = true
72
73             end
74         end
75     rescue
76         puts $!
77         usage
78         exit(1)
79     end
80 end
81
82 def startup_memfree
83     if $startup_memfree.nil?
84         meminfo = IO.readlines('/proc/meminfo').join
85         meminfo =~ /MemFree:.*?(\d+)/ or return -1
86         memfree = $1
87         meminfo =~ /Buffers:.*?(\d+)/ and buffers = $1
88         meminfo =~ /Cached:.*?(\d+)/ and cached = $1
89         $startup_memfree = memfree.to_i + buffers.to_i + cached.to_i
90     end
91     return $startup_memfree
92 end
93
94 def set_cache_memory_use_figure
95     
96     if $config['cache-memory-use'] =~ /memfree_(\d+)/
97         $config['cache-memory-use-figure'] = startup_memfree*$1.to_f/100
98     else
99         $config['cache-memory-use-figure'] = $config['cache-memory-use'].to_i
100     end
101     msg 2, _("Cache memory used: %s kB") % $config['cache-memory-use-figure']
102 end
103
104 def read_config
105     $config = {}
106     $config_file = File.expand_path('~/.booh-classifier-rc')
107     if File.readable?($config_file)
108         $xmldoc = REXML::Document.new(File.new($config_file))
109         $xmldoc.root.elements.each { |element|
110             txt = element.get_text
111             if txt
112                 if txt.value =~ /~~~/
113                     $config[element.name] = txt.value.split(/~~~/)
114                 else
115                     $config[element.name] = txt.value
116                 end
117             elsif element.elements.size == 0
118                 $config[element.name] = ''
119             else
120                 $config[element.name] = {}
121                 element.each { |chld|
122                     txt = chld.get_text
123                     $config[element.name][chld.name] = txt ? txt.value : nil
124                 }
125             end
126         }
127     end
128     $config['video-viewer'] ||= '/usr/bin/mplayer %f'
129     $config['browser'] ||= "/usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f"
130     $config['preload-distance'] ||= '5'
131     $config['cache-memory-use'] ||= 'memfree_80%'
132     $config['rotate-set-exif'] ||= 'true'
133     set_cache_memory_use_figure
134 end
135
136 def check_config
137     missing = %w(mplayer).delete_if { |prg| system("which #{prg} >/dev/null 2>/dev/null") }
138     if missing != []
139         show_popup($main_window, utf8(_("The following program(s) are needed to handle videos: '%s'. Videos will be ignored.") % missing.join(', ')), { :pos_centered => true })
140     end
141
142     viewer_binary = $config['video-viewer'].split.first
143     if viewer_binary && ! File.executable?(viewer_binary)
144         show_popup($main_window, utf8(_("The configured video viewer seems to be unavailable.
145 You should fix this in Edit/Preferences so that you can view videos.
146
147 Problem was: '%s' is not an executable file.
148 Hint: don't forget to specify the full path to the executable,
149 e.g. '/usr/bin/mplayer' is correct but 'mplayer' only is not.") % viewer_binary), { :pos_centered => true, :not_transient => true })
150     end
151     browser_binary = $config['browser'].split.first
152     if browser_binary && ! File.executable?(browser_binary)
153         show_popup($main_window, utf8(_("The configured browser seems to be unavailable.
154 You should fix this in Edit/Preferences so that you can open URLs.
155
156 Problem was: '%s' is not an executable file.") % browser_binary), { :pos_centered => true, :not_transient => true })
157     end
158 end
159
160 def write_config
161     ios = File.open($config_file, "w")
162     $xmldoc = Document.new "<booh-classifier-rc version='#{$VERSION}'/>"
163     $xmldoc << XMLDecl.new(XMLDecl::DEFAULT_VERSION, $CURRENT_CHARSET)
164     $config.each_pair { |key, value|
165         elem = $xmldoc.root.add_element key
166         if value.is_a? Hash
167             $config[key].each_pair { |subkey, subvalue|
168                 subelem = elem.add_element subkey
169                 subelem.add_text subvalue.to_s
170             }
171         elsif value.is_a? Array
172             elem.add_text value.join('~~~')
173         else
174             if !value
175                 elem.remove
176             else
177                 elem.add_text value.to_s
178             end
179         end
180     }
181     $xmldoc.write(ios, 0)
182     ios.close
183 end
184
185 def save_undo(name, closure, *params)
186     UndoHandler.save_undo(name, closure, [ *params ])
187     $undo_mb.sensitive = true
188     $redo_mb.sensitive = false
189 end
190
191 def get_mem
192     IO.readlines('/proc/self/status').join =~ /VmRSS.*?(\d+)\s*kB/
193     msg 3, "RSS: #{$1}"
194     return $1.to_i
195 end
196
197 def show_mem(*txt)
198     txt.length > 0 and print txt[0]
199     msg 2, "RSS: #{get_mem}"
200 end
201
202 class Gdk::Color
203     def darker
204         color = dup
205         color.red = [ color.red - 10000, 0 ].max
206         color.green = [ color.green - 10000, 0 ].max
207         color.blue = [ color.blue - 10000, 0 ].max
208         return color
209     end
210     def lighter
211         color = dup
212         color.red = [ color.red + 10000, 65535 ].min
213         color.green = [ color.green + 10000, 65535 ].min
214         color.blue = [ color.blue + 10000, 65535 ].min
215         return color
216     end
217 end
218
219 $color_red = Gdk::Color.new(65535, 0, 0)
220 $colors = [ Gdk::Color.new(0, 65535, 0),
221             Gdk::Color.new(0, 0, 65535),
222             Gdk::Color.new(65535, 65535, 0),
223             Gdk::Color.new(0, 65535, 65535),
224             Gdk::Color.new(65535, 0, 65535) ]
225
226 class Label
227     attr_accessor :color, :name, :button
228     def initialize(name)
229         @name = name
230     end
231 end
232
233 class Entry
234     @@thumbnails_height = 64
235     @@max_width = nil
236     def Entry.thumbnails_height
237         return @@thumbnails_height
238     end
239
240     attr_accessor :path, :type, :angle, :button, :image, :alignment, :removed, :labeled
241
242     def initialize(path, type)
243         @path = path
244         @type = type
245         if @@max_width.nil?
246             @@max_width = $main_window.root_window.size[0] - $labels_vbox.allocation.width - ( $videoborder_pixbuf.width + MainView.borders_thickness) * 2
247         end
248     end
249
250     def pixbuf_full
251         if @pixbuf_full.nil?
252             msg 3, ">>> pixbuf_full #{path}"
253             load_into_pixbuf_full
254         end
255         return @pixbuf_full
256     end
257     def free_pixbuf_full
258         if @pixbuf_full.nil?
259             return false
260         else
261             msg 3, ">>> free_pixbuf_full #{path}"
262             @pixbuf_full = nil
263             return true
264         end
265     end
266     def pixbuf_main
267         width, height = $mainview.window.size 
268         width = MainView.get_usable_width(width)
269         height = MainView.get_usable_height(height)
270         if @pixbuf_main.nil? || width != @width || height != @height
271             msg 3, ">>> pixbuf_main #{path}"
272             @width = width
273             @height = height
274             load_into_pixbuf_full  #- make sure it is loaded
275             if @pixbuf_full.nil?
276                 return
277             end
278             if @pixbuf_full.width.to_f / @pixbuf_full.height > width.to_f / height
279                 resized_height = @pixbuf_full.height * (width.to_f/@pixbuf_full.width)
280                 if @pixbuf_full.width > width || @pixbuf_full.height > resized_height
281                     @pixbuf_main = @pixbuf_full.scale(width, resized_height, Gdk::Pixbuf::INTERP_BILINEAR)
282                 else
283                     @pixbuf_main = @pixbuf_full
284                 end
285             else
286                 resized_width = @pixbuf_full.width * (height.to_f/@pixbuf_full.height)
287                 if @pixbuf_full.width > resized_width || @pixbuf_full.height > height
288                     @pixbuf_main = @pixbuf_full.scale(resized_width, height, Gdk::Pixbuf::INTERP_BILINEAR)
289                 else
290                     @pixbuf_main = @pixbuf_full
291                 end
292             end
293         end
294         return @pixbuf_main
295     end
296     def free_pixbuf_main
297         if @pixbuf_main.nil?
298             return false
299         else
300             msg 3, ">>> free_pixbuf_main #{path}"
301             @pixbuf_main = nil
302             return true
303         end
304     end
305     def pixbuf_thumbnail
306         if @pixbuf_thumbnail.nil?
307             if @pixbuf_main
308                 msg 3, ">>> pixbuf_thumbnail from main #{path}"
309                 @pixbuf_thumbnail = @pixbuf_main.scale(@pixbuf_main.width * (@@thumbnails_height.to_f/@pixbuf_main.height), @@thumbnails_height, Gdk::Pixbuf::INTERP_BILINEAR)
310             else
311                 msg 3, ">>> pixbuf_thumbnail from file #{path}"
312                 @pixbuf_thumbnail = load_into_pixbuf_at_size { |w, h|
313                     if @angle == 0
314                         if h > @@thumbnails_height
315                             [ w * @@thumbnails_height.to_f/h, @@thumbnails_height ]
316                         else
317                             [ w, h ]
318                         end
319                     else
320                         if w > @@thumbnails_height
321                             [ @@thumbnails_height, h * @@thumbnails_height.to_f/w ]
322                         else
323                             [ w, h ]
324                         end
325                     end
326                 }
327             end
328         end
329         return @pixbuf_thumbnail
330     end
331     def free_pixbuf_thumbnail
332         if @pixbuf_thumbnail.nil?
333             return false
334         else
335             msg 3, ">>> free_pixbuf_thumbnail #{path}"
336             @pixbuf_thumbnail = nil
337             return true
338         end
339     end
340
341     def outline_color
342         if removed
343             return $color_red
344         elsif labeled
345             return labeled.color
346         else
347             return nil
348         end
349     end
350
351     def show_bg
352         if outline_color.nil?
353             button.modify_bg(Gtk::StateType::NORMAL, nil)
354             button.modify_bg(Gtk::StateType::PRELIGHT, nil)
355             button.modify_bg(Gtk::StateType::ACTIVE, nil)
356         else
357             button.modify_bg(Gtk::StateType::NORMAL, outline_color)
358             button.modify_bg(Gtk::StateType::PRELIGHT, outline_color.lighter)
359             button.modify_bg(Gtk::StateType::ACTIVE, outline_color)
360         end
361     end
362
363     def get_beautified_name
364         if type == 'image'
365             size = get_image_size(path)
366             return _("%s (%sx%s, %s KB)") % [File.basename(@path).gsub(/\.[^.]+$/, ''),
367                                              size[:x],
368                                              size[:y],
369                                              commify(file_size(path)/1024)]
370         else
371             return _("%s (video - %s KB)") % [File.basename(@path).gsub(/\.[^.]+$/, ''),
372                                              commify(file_size(path)/1024)]
373         end
374     end
375
376     private
377     def cleanup_dir(dir)
378         Dir.entries(dir).each { |file| file != '.' && file != '..' and File.delete(File.join(dir, file)) }
379         Dir.delete(dir)
380     end
381
382     def load_into_pixbuf_full
383         if @pixbuf_full.nil?
384             msg 3, ">>> load_into_pixbuf_full #{path}"
385             @pixbuf_full = load_into_pixbuf_at_size { |w, h|
386                 if @angle == 0
387                     if w > @@max_width
388                         #- save memory and speedup (+35%) loading 
389                         [ w * (factor = @@max_width.to_f/w), h * factor ]
390                     else
391                         [ w, h ]
392                     end
393                 else
394                     if h > @@max_width
395                         [ w * (factor = @@max_width.to_f/h), h * factor ]
396                     else
397                         [ w, h ]
398                     end
399                 end
400             }
401         end
402     end
403
404     def load_into_pixbuf_at_size(&specify_size)
405         pixbuf = nil
406         if @type == 'video'
407             tmp = Tempfile.new("boohclassifiertemp")
408             tmp.close!
409             Dir.mkdir(dest_dir = tmp.path)
410             orig_base = File.basename(path)
411             tmpdir = gen_video_thumbnail(path, false, 0)
412             if tmpdir.nil?
413                 return
414             end
415             image_path = "#{tmpdir}/00000001.jpg"
416         else
417             image_path = @path
418         end
419         if @angle.nil?
420             if @type == 'image'
421                 @angle = guess_rotate(image_path)
422             else
423                 @angle = 0
424             end
425         end
426         begin
427             #- use a pixbuf loader and trigger Gtk.main_iteration on each chunk if needed, to keep the UI responsive even
428             #- if loaded pictures are several MBs large
429             loader = Gdk::PixbufLoader.new
430             loader.signal_connect('size-prepared') { |l, w, h|
431                 r = specify_size.call(w, h)
432                 msg 3, "specified sizes: #{r[0]} #{r[1]}"
433                 loader.set_size(*specify_size.call(w, h))
434             }
435             loader.signal_connect('area-prepared') { pixbuf = loader.pixbuf }
436             file = File.new(image_path)
437             while (chunk = file.read(4096)) != nil
438                 loader.write(chunk)
439                 Gtk.main_iteration while Gtk.events_pending?
440             end
441             file.close
442             loader.close
443             if pixbuf.nil?
444                 raise "Loaded pixbuf nil - #{path} #{image_path}"
445             end
446         rescue Gdk::PixbufError
447             msg 0, "Cannot load #{image_path}: #{$!}"
448             return
449         ensure
450             if @type == 'video'
451                 File.delete(image_path)
452                 Dir.rmdir(tmpdir)
453             end
454         end
455         if pixbuf
456             if @angle != 0
457                 msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
458                 pixbuf = rotate_pixbuf(pixbuf, @angle)
459             end
460         end
461         if @type == 'video'
462             cleanup_dir(dest_dir)
463         end
464         return pixbuf
465     end
466
467     def to_s
468         @path
469     end
470 end
471
472 $allentries = []
473
474 def run_preloader_real
475     msg 3, "*** >> main preloading triggered..."
476     if $preloader_running
477         msg 3, "*** >>>>>> already running, return <<<<<<<<"
478         return
479     end
480     $preloader_running = true
481     if $mainview.get_shown_entry
482         mem = get_mem
483         if mem > $config['cache-memory-use-figure']
484             msg 3, "too much RSS, stopping preloading, triggering GC"
485             $preloader_running = false
486             GC.start
487             msg 3, "GC finished"
488             return
489         end
490         index = $allentries.index($mainview.get_shown_entry)
491         for j in 1 .. $config['preload-distance'].to_i
492             i = index + j
493             if i < $allentries.size
494                 $allentries[i].pixbuf_main
495             end
496             i = index - j
497             if i >= 0
498                 $allentries[i].pixbuf_main
499             end
500         end
501         check_memory_free_cache_if_needed
502     end
503     $preloader_running = false
504     msg 3, "*** << main preloading finished"
505     #- if we're already on a different image, rerun the preloader
506     if index != $allentries.index($mainview.get_shown_entry)
507         run_preloader_real
508     end
509 end
510
511 def run_preloader
512     if ! $preloader_allowed
513         msg 3, "*** preloader not yet allowed"
514         return
515     end
516     Gtk.timeout_add(10) {
517         run_preloader_real
518         false
519     }
520 end
521
522 class MainView < Gtk::DrawingArea
523
524     @@borders_thickness = 5
525     @@borders_length = 25
526
527     def MainView.borders_thickness
528         return @@borders_thickness
529     end
530
531     def MainView.get_usable_width(available_width)
532         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
533     end
534
535     def MainView.get_usable_height(available_height)
536         return available_height - @@borders_thickness * 2
537     end
538     
539     def initialize
540         super()
541         signal_connect('expose-event') { draw }
542         signal_connect('configure-event') { update_shown }
543         @preloader_running = false
544     end
545
546     def set_shown_entry(entry)
547         t1 = Time.now
548         if ! entry.nil? && entry == @entry
549             return
550         end
551         if ! entry.nil?
552             if ! entry.button
553                 #- not loaded yet
554                 return
555             else
556                 entry.button.grab_focus
557             end
558         end
559         @entry = entry
560         redraw        
561         run_preloader
562         msg 3, "entry shown in: #{Time.now - t1} s"
563     end
564
565     def get_shown_entry
566         return @entry
567     end
568
569     def show_next_entry(entry)
570         index = $allentries.index(entry) + 1
571         if index < $allentries.size
572             set_shown_entry($allentries[index])
573         end
574     end
575
576     def redraw
577         update_shown
578         w, h = window.size
579         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
580         window.clear
581         draw
582         window.end_paint
583     end
584
585     def update_shown
586         if @entry
587             @pixbuf = @entry.pixbuf_main
588             width, height = window.size 
589             @xpos = (width - @pixbuf.width)/2
590             @ypos = (height - @pixbuf.height)/2
591         else
592             @pixbuf = nil
593         end
594     end
595
596     def draw
597         if @pixbuf
598             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
599             if @entry && @entry.type == 'video'
600                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
601             end
602             if ! @entry.outline_color.nil?
603                 gc = Gdk::GC.new(window)
604                 colormap.alloc_color(@entry.outline_color, false, true)
605                 gc.set_foreground(@entry.outline_color)
606                 if @entry && @entry.type == 'video'
607                     xleft = @xpos - $videoborder_pixbuf.width
608                     xright = @xpos + @pixbuf.width + $videoborder_pixbuf.width
609                 else
610                     xleft = @xpos
611                     xright = @xpos + @pixbuf.width
612                 end
613                 window.draw_polygon(gc, true, [[xleft - @@borders_thickness, @ypos - @@borders_thickness],
614                                                [xright + @@borders_thickness, @ypos - @@borders_thickness],
615                                                [xright + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
616                                                [xleft - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
617                                                [xleft - @@borders_thickness, @ypos - 1],
618                                                [xleft - 1, @ypos - 1],
619                                                [xleft - 1, @ypos + @pixbuf.height + 1],
620                                                [xright + 1, @ypos + @pixbuf.height + 1],
621                                                [xright + 1, @ypos - 1],
622                                                [xleft - @@borders_thickness, @ypos - 1]])
623             end
624         end
625     end
626 end
627
628 def check_memory_free_cache_if_needed
629     i = $allentries.index($mainview.get_shown_entry)
630     return if i.nil?
631     if get_mem < $config['cache-memory-use-figure'] * 2 / 3
632         return
633     end
634     msg 3, "too much RSS, triggering GC"
635     GC.start
636     msg 3, "GC finished"
637     ($allentries.size - 1).downto(1) { |j|
638         if get_mem < $config['cache-memory-use-figure'] / 2
639             break
640         end
641         index = i + j
642         msg 3, "too much RSS, freeing full size of #{i+j} and #{i-j}..."
643         if i + j < $allentries.size
644             $allentries[i+j].free_pixbuf_full
645         end
646         if i - j > 0
647             $allentries[i-j].free_pixbuf_full
648         end
649     }
650 end
651
652 def autoscroll_if_needed(button)
653     xpos_left = button.allocation.x
654     xpos_right = button.allocation.x + button.allocation.width
655     hadj = $imagesline_sw.hadjustment
656     current_minx_visible = hadj.value
657     current_maxx_visible = hadj.value + hadj.page_size
658     if xpos_left < current_minx_visible
659         #- autoscroll left
660         newval = hadj.value - (current_minx_visible - xpos_left)
661         hadj.value = newval
662         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
663     elsif xpos_right > current_maxx_visible
664         #- autoscroll right
665         newval = hadj.value + (xpos_right - current_maxx_visible)
666         if newval > hadj.upper - hadj.page_size
667             newval = hadj.upper - hadj.page_size
668         end
669         hadj.value = newval
670         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
671     end
672 end
673
674 def show_popup(parent, msg, *options)
675     dialog = Gtk::Dialog.new
676     if options[0]
677         options = options[0]
678     else
679         options = {}
680     end
681     if options[:title]
682         dialog.title = options[:title]
683     else
684         dialog.title = utf8(_("Booh message"))
685     end
686     lbl = Gtk::Label.new
687     if options[:nomarkup]
688         lbl.text = msg
689     else
690         lbl.markup = msg
691     end
692     if options[:centered]
693         lbl.set_justify(Gtk::Justification::CENTER)
694     end
695     if options[:selectable]
696         lbl.selectable = true
697     end
698     if options[:topwidget]
699         dialog.vbox.add(options[0][:topwidget])
700     end
701     if options[:scrolled]
702         sw = Gtk::ScrolledWindow.new(nil, nil)
703         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
704         sw.add_with_viewport(lbl)
705         dialog.vbox.add(sw)
706         dialog.set_default_size(500, 600)
707     else
708         dialog.vbox.add(lbl)
709         dialog.set_default_size(200, 120)
710     end
711     if options[:bottomwidget]
712         dialog.vbox.add(options[:bottomwidget])
713     end
714     if options[:okcancel]
715         dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
716     end
717     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
718
719     if options[:pos_centered]
720         dialog.window_position = Gtk::Window::POS_CENTER
721     else
722         dialog.window_position = Gtk::Window::POS_MOUSE
723     end
724
725     if options[:linkurl]
726         linkbut = Gtk::Button.new('')
727         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
728         linkbut.signal_connect('clicked') {
729             open_url(options[0][:linkurl] + '/index.html')
730             dialog.response(Gtk::Dialog::RESPONSE_OK)
731             set_mousecursor_normal
732         }
733         linkbut.relief = Gtk::RELIEF_NONE
734         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
735         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
736         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
737     end
738
739     dialog.show_all
740
741     if options[:stuff_connector]
742         options[:stuff_connector].call({ :dialog => dialog })
743     end
744                                         
745     if !options[:not_transient]
746         dialog.transient_for = parent
747         dialog.run { |response|
748             if options[:data_getter]
749                 options[:data_getter].call
750             end
751             dialog.destroy
752             if options[:okcancel]
753                 return response == Gtk::Dialog::RESPONSE_OK
754             end
755         }
756     else
757         dialog.signal_connect('response') { dialog.destroy }
758     end
759 end
760
761 def video_view(entry)
762     cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
763     msg 2, cmd
764     system(cmd)
765 end
766
767 def thumbnail_keypressed(entry, event)
768     if event.state & Gdk::Window::MOD1_MASK != 0
769         #- ALT pressed: Alt-Left and Alft-Right rotate
770         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
771             if event.keyval == Gdk::Keyval::GDK_Left
772                 entry.angle = (entry.angle - 90) % 360
773             else
774                 entry.angle = (entry.angle + 90) % 360
775             end
776             entry.free_pixbuf_full
777             entry.free_pixbuf_main
778             entry.free_pixbuf_thumbnail
779             $mainview.redraw
780             entry.image.pixbuf = entry.pixbuf_thumbnail
781             if $config['rotate-set-exif'] == 'true'
782                 Exif.set_orientation(entry.path, angle_to_exif_orientation(entry.angle))
783             end
784         end
785
786     elsif event.state & Gdk::Window::CONTROL_MASK != 0
787         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo
788         if event.keyval == Gdk::Keyval::GDK_z
789             perform_undo
790         end
791         if event.keyval == Gdk::Keyval::GDK_r
792             perform_redo
793         end
794
795     else
796         removed_before = entry.removed
797         label_before = entry.labeled
798
799         if event.keyval == Gdk::Keyval::GDK_Delete
800             entry.removed = true
801             entry.labeled = nil
802             entry.show_bg
803             $mainview.show_next_entry(entry)
804             update_visibility(entry)
805
806             save_undo(_("set for removal"),
807                       proc {
808                           entry.removed = removed_before
809                           entry.labeled = label_before
810                           entry.show_bg
811                           update_visibility(entry)
812                           if entry.button.visible?
813                               $mainview.set_shown_entry(entry)
814                           end
815                           proc {
816                               entry.removed = true
817                               entry.labeled = nil
818                               entry.show_bg
819                               update_visibility(entry)
820                               if entry.button.visible?
821                                   $mainview.set_shown_entry(entry)
822                               end
823                           }
824                       })
825
826         elsif event.keyval == Gdk::Keyval::GDK_space
827             if entry.labeled
828                 msg = _("Cleared label")
829             elsif entry.removed
830                 msg = _("Cleared set for removal")
831             end
832             entry.removed = false
833             entry.labeled = nil
834             entry.show_bg
835             $mainview.show_next_entry(entry)
836
837             save_undo(msg,
838                       proc {
839                           entry.removed = removed_before
840                           entry.labeled = label_before
841                           entry.show_bg
842                           $mainview.set_shown_entry(entry)
843                           proc {
844                               entry.removed = false
845                               entry.labeled = nil
846                               entry.show_bg
847                               $mainview.set_shown_entry(entry)
848                           }
849                       })
850
851         elsif event.keyval == Gdk::Keyval::GDK_Return && entry.type == 'video'
852             video_view(entry)
853
854         else
855             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
856             if char =~ /^[a-zA-z0-9]$/
857                 label = $labels[char]
858                 
859                 if label.nil?
860                     vb = Gtk::VBox.new(false, 0)
861                     vb.pack_start(entry = Gtk::Entry.new.set_text(char), false, false)
862                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::ColorButton.new))
863                     color = bt.color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
864                     bt.signal_connect('color-set') { color = bt.color }
865                     text = nil
866                     entry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
867                         while $labels.has_key?(entry.text[0,1])
868                             entry.text = entry.text.sub(/./, '')
869                         end
870                     }
871                     if show_popup($main_window,
872                                   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,
873                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = entry.text },
874                                     :stuff_connector => proc { |stuff| entry.select_region(0, 0)
875                                                                        entry.position = -1
876                                                                        entry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
877                         if text.length > 0
878                             char = text[0,1]  #- in case it changed
879                             label = Label.new(text)
880                             label.color = color
881                             $labels[char] = label
882                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
883                             $labels_vbox.pack_start(label.button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
884                             label.button.active = true
885                             label.button.signal_connect('toggled') { update_all_visibilities }
886                             evt.modify_bg(Gtk::StateType::NORMAL, label.color)
887                             evt.modify_bg(Gtk::StateType::PRELIGHT, label.color.lighter.lighter)
888                             evt.modify_bg(Gtk::StateType::ACTIVE, label.color.lighter)
889                         end
890                     end
891
892                 else
893                     entry.removed = false
894                     entry.labeled = label
895                     entry.show_bg
896                     $mainview.show_next_entry(entry)
897                     update_visibility(entry)
898
899                     save_undo(_("set label"),
900                               proc {
901                                   entry.removed = removed_before
902                                   entry.labeled = label_before
903                                   entry.show_bg
904                                   update_visibility(entry)
905                                   if entry.button.visible?
906                                       $mainview.set_shown_entry(entry)
907                                   end
908                                   proc {
909                                       entry.removed = false
910                                       entry.labeled = label
911                                       entry.show_bg
912                                       update_visibility(entry)
913                                       if entry.button.visible?
914                                           $mainview.set_shown_entry(entry)
915                                       end
916                                   }
917                               })
918                 end
919             end
920         end
921     end
922 end
923
924 def sb_msg(msg)
925     $statusbar.pop(0)
926     if msg
927         $statusbar.push(0, utf8(msg))
928     end
929 end
930
931 def show_entry(entry, i)
932     #- scope entry
933     msg 3, "showing entry #{entry}"
934     entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
935     if entry.type == 'video'
936         entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
937                                            pack_start(entry.image).
938                                            pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
939         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
940         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
941     else
942         entry.button = Gtk::Button.new.set_image(entry.image)
943     end
944     Gtk::Tooltips.new.set_tip(entry.button, entry.get_beautified_name, nil)
945     $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
946     entry.button.signal_connect('clicked') {
947         if (last_shown = $mainview.get_shown_entry) != entry
948             $mainview.set_shown_entry(entry)
949             entry.alignment.set(0.5, 0, 0, 0)
950             sb_msg(_("Selected %s") % entry.get_beautified_name)
951             last_shown and last_shown.alignment.set(0.5, 1, 0, 0)
952         end
953     }
954     entry.button.signal_connect('button-press-event') { |w, event|
955         if entry.type == 'video' && event.event_type == Gdk::Event::BUTTON2_PRESS
956             video_view(entry)
957         end
958     }
959     entry.button.signal_connect('focus-in-event') { entry.button.clicked; autoscroll_if_needed(entry.button) }
960     entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
961     if i == 0
962         entry.button.grab_focus
963     end
964     update_visibility(entry)
965     Gtk.main_iteration while Gtk.events_pending?
966 end
967
968 def show_entries
969     sb_msg(_("Loading images..."))
970     t1 = Time.now
971     total_loaded_files = 0
972     total_loaded_size = 0
973     i = 0
974     while i < $allentries.size
975 #        printf "%d %s\n", i, __LINE__
976         entry = $allentries[i]
977         if i == 0
978             loaded_pixbuf = entry.pixbuf_main
979         else
980             loaded_pixbuf = entry.pixbuf_thumbnail
981         end
982
983         if loaded_pixbuf
984             show_entry(entry, i)
985
986             total_loaded_size += file_size(entry.path)
987             if i % 4 == 0
988                 check_memory_free_cache_if_needed
989             end
990             total_loaded_files += 1
991             i += 1
992             if i > $config['preload-distance'].to_i && i <= $config['preload-distance'].to_i * 2
993                 #- when we're at preload distance, beging preloading to preload distance
994                 $allentries[i - $config['preload-distance'].to_i].pixbuf_main
995             end
996             if i == $config['preload-distance'].to_i * 2 + 1
997                 #- when we're after double preload distance, activate normal preloading
998                 $preloader_allowed = true
999             end
1000             
1001         else
1002             $allentries.delete_at(i)
1003         end
1004     end
1005     if i <= $config['preload-distance'].to_i * 2
1006         #- not yet preloaded correctly
1007         $preloader_allowed = true
1008         run_preloader
1009     end
1010     sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ total_loaded_files, commify(total_loaded_size / 1024), Time.now - t1 ])
1011 end
1012
1013 def reset_all
1014     $images_loader and $images_loader.kill
1015     reset_labels
1016     reset_thumbnails
1017     $mainview.set_shown_entry(nil)
1018     sb_msg(nil)
1019 end
1020
1021 def open_dir(path)
1022     #- remove visual stuff, so that user will see something is happening
1023     reset_all
1024     sb_msg(_("Scanning source directory..."))
1025
1026     path = File.expand_path(path.sub(%r|/$|, ''))
1027     examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
1028     #- validate first
1029     examined_dirs.each { |dir|
1030         if dir =~ /'/
1031             return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
1032         end
1033         Dir.entries(dir).each { |file|
1034             if file =~ /['"\[\]]/
1035                 return utf8(_("Files can't contain any of the characters ', \", [ or ], sorry: %s") % "#{dir}/#{file}")
1036             end
1037         }
1038     }
1039
1040     #- scan for populate second
1041     examined_dirs.each { |dir|
1042         if File.basename(dir) =~ /^\./
1043             msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
1044             next
1045         end
1046         entries = Dir.entries(dir)
1047         if $sort_by_exif_date
1048             dates = {}
1049             entries.each { |file|
1050                 date_time = Exif.datetimeoriginal(File.join(dir, file))
1051                 if ! date_time.nil?
1052                     dates[file] = date_time
1053                 end
1054             }
1055             entries = smartsort(entries, dates)
1056         else
1057             entries.sort!
1058         end
1059         entries.each { |file|
1060             type = entry2type(file)
1061             if type
1062                 $allentries << Entry.new(File.join(dir, file), type)
1063             end
1064         }
1065     }
1066     $workingdir = path
1067     show_entries
1068     $execute.sensitive = true
1069     return nil
1070 end
1071
1072 def open_dir_popup
1073     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
1074                                     nil,
1075                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
1076                                     nil,
1077                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1078     fc.transient_for = $main_window
1079     if $workingdir
1080         fc.current_folder = $workingdir
1081     end
1082     ok = false
1083     while !ok
1084         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1085             msg = open_dir(fc.filename)
1086             if msg
1087                 show_popup(fc, msg)
1088                 ok = false
1089             else
1090                 ok = true
1091             end
1092         else
1093             ok = true
1094         end
1095     end
1096     fc.destroy
1097 end
1098
1099 def try_quit(*options)
1100     Gtk.main_quit
1101 end
1102
1103 def execute
1104     dialog = Gtk::Dialog.new
1105     dialog.title = utf8(_("Booh message"))
1106
1107     vb1 = Gtk::VBox.new(false, 5)
1108     label = Gtk::Label.new.set_markup(utf8(_("You're about to <b>execute</b> actions on the marked images.\nPlease confirm below the actions. This operation is not undoable!")))
1109     vb1.pack_start(label, false, false)
1110
1111     table = Gtk::Table.new(0, 0, false)
1112     table.set_row_spacings(5)
1113     table.set_column_spacings(5)
1114     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)
1115     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)
1116     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)
1117     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)
1118     add_row = proc { |row, name, color, truthproc, normal|
1119         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)),
1120                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1121         counter = 0
1122         examples = Gtk::HBox.new(false, 5)
1123         $allentries.each { |entry|
1124             if truthproc.call(entry)
1125                 counter += 1
1126                 if counter < 4
1127                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1128                     if entry.type == 'video'
1129                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1130                                                   pack_start(thumbnail).
1131                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1132                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1133                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1134                     end
1135                     examples.pack_start(thumbnail, false, false)
1136                 elsif counter == 4
1137                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1138                 end
1139             end
1140         }
1141         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1142         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1143
1144         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1145         iter = combostore.append
1146         if normal
1147             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1148             iter[1] = utf8(_("Move to:"))
1149             iter = combostore.append
1150             iter[0] = $main_window.render_icon(Gtk::Stock::PASTE, Gtk::IconSize::MENU)
1151             iter[1] = utf8(_("Copy to:"))
1152         else
1153             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1154             iter[1] = utf8(_("Permanently remove"))
1155         end
1156         iter = combostore.append
1157         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1158         iter[1] = utf8(_("Do nothing"))
1159         combo = Gtk::ComboBox.new(combostore)
1160         combo.active = 0
1161         renderer = Gtk::CellRendererPixbuf.new
1162         combo.pack_start(renderer, false)
1163         combo.set_attributes(renderer, :pixbuf => 0)
1164         renderer = Gtk::CellRendererText.new
1165         combo.pack_start(renderer, true)
1166         combo.set_attributes(renderer, :text => 1)
1167
1168         if normal
1169             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1170             lastpath = $workingdir
1171             pathbutton.signal_connect('clicked') {
1172                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1173                                                 nil,
1174                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1175                                                 nil,
1176                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1177                 fc.transient_for = dialog
1178                 fc.current_folder = lastpath
1179                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1180                     pathlabel.text = fc.filename
1181                 end
1182                 lastpath = fc.filename
1183                 fc.destroy
1184             }
1185             combo.signal_connect('changed') {
1186                 pathbutton.sensitive = combo.active <= 1
1187             }
1188             vb = Gtk::VBox.new(false, 5)
1189             vb.pack_start(combo, false, false)
1190             vb.pack_start(pathbutton, false, false)
1191             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1192             { :combo => combo, :pathlabel => pathlabel }
1193         else
1194             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1195             { :combo => combo }
1196         end
1197     }
1198     stuff = {}
1199     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), $color_red, proc { |entry| entry.removed }, false)
1200     $labels.values.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1201     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1202
1203     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1204     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1205     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 ]))
1206     if toremove_amount > 0
1207         vb1.pack_start(check_removal, false, false)
1208         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1209             check_removal.sensitive = widget.active == 0
1210         }
1211     end
1212
1213     dialog.vbox.add(vb1)
1214
1215     dialog.set_default_size(800, 600)
1216     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1217     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1218     dialog.window_position = Gtk::Window::POS_MOUSE
1219     dialog.transient_for = $main_window
1220
1221     dialog.show_all
1222
1223     while true
1224         dialog.run { |response|        
1225             if response == Gtk::Dialog::RESPONSE_OK
1226                 if toremove_amount > 0 && ! check_removal.active? && stuff['toremove'][:combo].active == 0
1227                     show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1228                     break
1229                 end
1230                 problem = false
1231                 label2entries = {}
1232                 $labels.values.each { |label| label2entries[label] = [] }
1233                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1234                 stuff.keys.each { |key|
1235                     if key.is_a?(Label) && stuff[key][:combo].active <= 1
1236                         destination = stuff[key][:pathlabel].text
1237                         if destination[0] != ?/
1238                             show_popup(dialog, utf8(_("You have not selected a directory where to move/copy %s.") % key.name))
1239                             problem = true
1240                             break
1241                         end
1242                         begin
1243                             Dir.mkdir(destination)
1244                         rescue Errno::EEXIST
1245                         end
1246                         begin
1247                             st = File.stat(destination)
1248                         rescue
1249                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not createable.") % [destination, key.name]))
1250                             problem = true
1251                             break
1252                         end
1253                         if ! st.directory? || ! st.writable?
1254                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not writable.") % [destination, key.name]))
1255                             problem = true
1256                             break
1257                         end
1258                         label2entries[key].each { |entry|
1259                             begin
1260                                 File.stat(File.join(destination, File.basename(entry.path)))
1261                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in directory '%s'.") % [ File.basename(entry.path), destination ]))
1262                                 problem = true
1263                                 break
1264                             rescue
1265                             end
1266                         }
1267                         if problem
1268                             break
1269                         end
1270                     end
1271                 }
1272                 if ! problem
1273                     begin
1274                         moved = 0
1275                         copied = 0
1276                         stuff.keys.each { |key|
1277                             if key.is_a?(Label) && stuff[key][:combo].active <= 1
1278                                 destination = stuff[key][:pathlabel].text
1279                                 label2entries[key].each { |entry|
1280                                     if stuff[key][:combo].active == 0
1281                                         File.rename(entry.path, File.join(destination, File.basename(entry.path)))
1282                                         moved += 1
1283                                     elsif stuff[key][:combo].active == 1
1284                                         system("cp -dp '#{entry.path}' '#{destination}'")
1285                                         copied += 1
1286                                     end
1287                                 }
1288                             end
1289                         }
1290                         removed = 0
1291                         if stuff['toremove'][:combo].active == 0
1292                             $allentries.each { |entry|
1293                                 if entry.removed
1294                                     File.delete(entry.path)
1295                                     removed += 1
1296                                 end
1297                             }
1298                         end
1299                     rescue
1300                         msg 1, "woops: #{$!}"
1301                         show_popup(dialog, utf8(_("Unexpected system call error: '%s'.") % $!))
1302                     end
1303                     show_popup(dialog, utf8(_("Successfully moved %d files, copied %d file, and removed %d files.") % [ moved, copied, removed ]))
1304                     dialog.destroy
1305                     reset_all
1306                     return
1307                 end
1308
1309             else
1310                 dialog.destroy
1311                 return
1312             end
1313         }
1314     end
1315 end
1316
1317 def update_visibility(entry)
1318     if ! entry.button
1319         #- not yet loaded
1320         return
1321     end
1322     if entry.labeled
1323         if entry.labeled.button.active?
1324             entry.button.show
1325         else
1326             entry.button.hide
1327         end
1328     elsif entry.removed
1329         if $toremove_button.active?
1330             entry.button.show
1331         else
1332             entry.button.hide
1333         end
1334     else
1335         if $unlabelled_button.active?
1336             entry.button.show
1337         else
1338             entry.button.hide
1339         end
1340     end
1341 end
1342         
1343 def update_all_visibilities
1344     $allentries.each { |entry|
1345         update_visibility(entry)
1346     }
1347     shown = $mainview.get_shown_entry
1348     if shown.nil?
1349         return
1350     end
1351     while shown.button && ! shown.button.visible? && shown != $allentries.last
1352         shown = $allentries[$allentries.index(shown) + 1]
1353     end 
1354     if shown.button && shown.button.visible?
1355         shown.button.grab_focus
1356         return
1357     end
1358     $allentries.reverse.each { |entry|
1359         if entry.button && entry.button.visible?
1360             entry.button.grab_focus
1361             return
1362         end
1363     }
1364 end
1365
1366 def preferences
1367     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1368                              $main_window,
1369                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1370                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1371                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1372
1373     tooltips = Gtk::Tooltips.new
1374     
1375     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1376     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1377                0, 1, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1378     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1379                1, 2, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1380     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1381
1382     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
1383                0, 1, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1384     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1385                1, 2, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1386     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1387
1388     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1389                0, 1, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1390     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(preload_distance = Gtk::SpinButton.new(0, 50, 1).set_value($config['preload-distance'].to_i)),
1391                1, 2, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1392     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1393
1394     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1395                0, 1, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1396     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1397                1, 2, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1398     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1399                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1400                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1401     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1402     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1403     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1404                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1405                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1406     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1407     cache_memfree_radio.signal_connect('toggled') {
1408         if cache_memfree_radio.active?
1409             cache_memfree_label.sensitive = true
1410             cache_specify_label.sensitive = false
1411         else
1412             cache_specify_label.sensitive = true
1413             cache_memfree_label.sensitive = false
1414         end
1415     }
1416     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1417     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1418         cache_memfree_spin.value = $1.to_i
1419     else
1420         cache_specify_spin.value = $config['cache-memory-use'].to_i
1421     end
1422
1423     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1424                0, 2, 4, 5, Gtk::FILL, Gtk::SHRINK, 2, 2)
1425     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1426     update_exif_orientation_check.active = $config['rotate-set-exif'] == 'true'
1427
1428     dialog.vbox.show_all
1429     dialog.run { |response|
1430         if response == Gtk::Dialog::RESPONSE_OK
1431             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1432             $config['browser'] = from_utf8(browser_entry.text)
1433             $config['preload-distance'] = preload_distance.value
1434             $config['rotate-set-exif'] = update_exif_orientation_check.active?.to_s
1435             if cache_memfree_radio.active?
1436                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1437             else
1438                 $config['cache-memory-use'] = cache_specify_spin.value
1439             end
1440             set_cache_memory_use_figure
1441         end
1442     }
1443     dialog.destroy
1444 end
1445
1446 def perform_undo
1447     if $undo_mb.sensitive?
1448         $redo_mb.sensitive = true
1449         if not more_undoes = UndoHandler.undo($statusbar)
1450             $undo_mb.sensitive = false
1451         end
1452     end
1453 end
1454
1455 def perform_redo
1456     if $redo_mb.sensitive?
1457         $undo_mb.sensitive = true
1458         if not more_redoes = UndoHandler.redo($statusbar)
1459             $redo_mb.sensitive = false
1460         end
1461     end
1462 end
1463
1464 def create_menubar    
1465     #- menu
1466     mb = Gtk::MenuBar.new
1467
1468     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1469     filesubmenu = Gtk::Menu.new
1470     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1471     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1472     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1473     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1474     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1475     filemenu.set_submenu(filesubmenu)
1476     mb.append(filemenu)
1477
1478     open.signal_connect('activate') { open_dir_popup }
1479     $execute.signal_connect('activate') { execute }
1480     quit.signal_connect('activate') { try_quit }
1481
1482     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1483     editsubmenu = Gtk::Menu.new
1484     editsubmenu.append($undo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1485     editsubmenu.append($redo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1486     editsubmenu.append(              Gtk::SeparatorMenuItem.new)
1487     editsubmenu.append(prefs       = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1488     editmenu.set_submenu(editsubmenu)
1489     mb.append(editmenu)
1490
1491     $undo_mb.signal_connect('activate') { perform_undo }
1492     $redo_mb.signal_connect('activate') { perform_redo }
1493     prefs.signal_connect('activate') { preferences }
1494     
1495     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1496     helpsubmenu = Gtk::Menu.new
1497     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1498     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1499     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1500     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1501     helpmenu.set_submenu(helpsubmenu)
1502     mb.append(helpmenu)
1503
1504     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial.html') }
1505     about.signal_connect('activate') { call_about }
1506
1507
1508     #- no toolbar, to save height
1509
1510     return mb
1511 end
1512
1513 def reset_labels
1514     for child in $labels_vbox.children
1515         $labels_vbox.remove(child)
1516     end
1517     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1518     $labels = {}
1519     lbl = Gtk::Label.new.set_markup(utf8(_("<i>unlabelled</i>")))
1520     $labels_vbox.pack_start($unlabelled_button = Gtk::CheckButton.new.add(Gtk::EventBox.new.add(lbl)).show_all)
1521     $unlabelled_button.active = true
1522     $unlabelled_button.signal_connect('toggled') { update_all_visibilities }
1523     lbl = Gtk::Label.new.set_markup(utf8(_("<i>to remove</i>")))
1524     $labels_vbox.pack_start($toremove_button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1525     $toremove_button.active = true
1526     $toremove_button.signal_connect('toggled') { update_all_visibilities }
1527     evt.modify_bg(Gtk::StateType::NORMAL, $color_red)
1528     evt.modify_bg(Gtk::StateType::PRELIGHT, $color_red.lighter.lighter)
1529     evt.modify_bg(Gtk::StateType::ACTIVE, $color_red.lighter)
1530 end
1531
1532 def reset_thumbnails
1533     $allentries = []
1534     for child in $imagesline.children
1535         $imagesline.remove(child)
1536     end
1537 end
1538
1539 def create_main_window
1540
1541     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1542     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1543
1544     mb = create_menubar
1545
1546     main_vbox = Gtk::VBox.new(false, 0)
1547     main_vbox.pack_start(mb, false, false)
1548     mainview_hbox = Gtk::HBox.new
1549     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 0, 0).add($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1550     reset_labels
1551     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1552     main_vbox.pack_start(mainview_hbox, true, true)
1553     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1554     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1555     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1556     main_vbox.pack_start($imagesline_sw, false, false)
1557     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1558
1559     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + 15)
1560
1561     $main_window = Gtk::Window.new
1562     $main_window.add(main_vbox)
1563     $main_window.signal_connect('delete-event') {
1564         try_quit({ :disallow_cancel => true })
1565     }
1566
1567     #- read/save size and position of window
1568     if $config['pos-x'] && $config['pos-y']
1569         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1570     else
1571         $main_window.window_position = Gtk::Window::POS_CENTER
1572     end
1573     msg 3, "size: #{$config['width']}x#{$config['height']}"
1574     $main_window.set_default_size(($config['width'] || 700).to_i, ($config['height'] || 600).to_i)
1575     $main_window.signal_connect('configure-event') {
1576         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1577         x, y = $main_window.window.root_origin
1578         width, height = $main_window.window.size
1579         $config['pos-x'] = x
1580         $config['pos-y'] = y
1581         $config['width'] = width
1582         $config['height'] = height
1583         false
1584     }
1585
1586     $main_window.show_all
1587 end
1588
1589
1590 handle_options
1591 read_config
1592 Gtk.init
1593
1594
1595 create_main_window
1596 check_config
1597
1598 if ARGV[0]
1599     open_dir(ARGV[0])
1600 end
1601 Gtk.main
1602
1603 write_config