9959fd73cb9b592d63ea71c6e0ac48eaaf9ab6db
[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 require 'thread'
25
26 require 'gtk2'
27 require 'booh/libadds'
28
29 require 'gettext'
30 include GetText
31 bindtextdomain("booh")
32
33 require 'rexml/document'
34 include REXML
35
36 require 'booh/booh-lib'
37 include Booh
38 require 'booh/UndoHandler'
39
40
41 #- options
42 $options = [
43     [ '--help',          '-h', GetoptLong::NO_ARGUMENT,       _("Get help message") ],
44
45     [ '--verbose-level', '-v', GetoptLong::REQUIRED_ARGUMENT, _("Set max verbosity level (0: errors, 1: warnings, 2: important messages, 3: other messages)") ],
46     [ '--sort-by-exif-date', '-s', GetoptLong::NO_ARGUMENT, _("Sort entries by EXIF date") ],
47 ]
48
49 def usage
50     puts _("Usage: %s [OPTION]...") % File.basename($0)
51     $options.each { |ary|
52         printf " %3s, %-15s %s\n", ary[1], ary[0], ary[3]
53     }
54 end
55
56 def handle_options
57     parser = GetoptLong.new
58     parser.set_options(*$options.collect { |ary| ary[0..2] })
59     begin
60         parser.each_option do |name, arg|
61             case name
62             when '--help'
63                 usage
64                 exit(0)
65
66             when '--verbose-level'
67                 $verbose_level = arg.to_i
68
69             when '--sort-by-exif-date'
70                 $sort_by_exif_date = true
71
72             end
73         end
74     rescue
75         puts $!
76         usage
77         exit(1)
78     end
79 end
80
81 def startup_memfree
82     if $startup_memfree.nil?
83         meminfo = IO.readlines('/proc/meminfo').join
84         meminfo =~ /MemFree:.*?(\d+)/ or return -1
85         memfree = $1
86         meminfo =~ /Buffers:.*?(\d+)/ and buffers = $1
87         meminfo =~ /Cached:.*?(\d+)/ and cached = $1
88         $startup_memfree = memfree.to_i + buffers.to_i + cached.to_i
89     end
90     return $startup_memfree
91 end
92
93 def set_cache_memory_use_figure
94     
95     if $config['cache-memory-use'] =~ /memfree_(\d+)/
96         $config['cache-memory-use-figure'] = startup_memfree*$1.to_f/100
97     else
98         $config['cache-memory-use-figure'] = $config['cache-memory-use'].to_i
99     end
100     msg 2, _("Cache memory used: %s kB") % $config['cache-memory-use-figure']
101 end
102
103 def read_config
104     $config = {}
105     $config_file = File.expand_path('~/.booh-classifier-rc')
106     if File.readable?($config_file)
107         $xmldoc = REXML::Document.new(File.new($config_file))
108         $xmldoc.root.elements.each { |element|
109             txt = element.get_text
110             if txt
111                 if txt.value =~ /~~~/
112                     $config[element.name] = txt.value.split(/~~~/)
113                 else
114                     $config[element.name] = txt.value
115                 end
116             elsif element.elements.size == 0
117                 $config[element.name] = ''
118             else
119                 $config[element.name] = {}
120                 element.each { |chld|
121                     txt = chld.get_text
122                     $config[element.name][chld.name] = txt ? txt.value : nil
123                 }
124             end
125         }
126     end
127     $config['video-viewer'] ||= '/usr/bin/mplayer %f'
128     $config['browser'] ||= "/usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f"
129     $config['preload-distance'] ||= '5'
130     $config['cache-memory-use'] ||= 'memfree_80%'
131     $config['rotate-set-exif'] ||= 'true'
132     set_cache_memory_use_figure
133 end
134
135 def check_config
136     missing = %w(mplayer).delete_if { |prg| system("which #{prg} >/dev/null 2>/dev/null") }
137     if missing != []
138         show_popup($main_window, utf8(_("The following program(s) are needed to handle videos: '%s'. Videos will be ignored.") % missing.join(', ')), { :pos_centered => true })
139     end
140
141     viewer_binary = $config['video-viewer'].split.first
142     if viewer_binary && ! File.executable?(viewer_binary)
143         show_popup($main_window, utf8(_("The configured video viewer seems to be unavailable.
144 You should fix this in Edit/Preferences so that you can view videos.
145
146 Problem was: '%s' is not an executable file.
147 Hint: don't forget to specify the full path to the executable,
148 e.g. '/usr/bin/mplayer' is correct but 'mplayer' only is not.") % viewer_binary), { :pos_centered => true, :not_transient => true })
149     end
150     browser_binary = $config['browser'].split.first
151     if browser_binary && ! File.executable?(browser_binary)
152         show_popup($main_window, utf8(_("The configured browser seems to be unavailable.
153 You should fix this in Edit/Preferences so that you can open URLs.
154
155 Problem was: '%s' is not an executable file.") % browser_binary), { :pos_centered => true, :not_transient => true })
156     end
157 end
158
159 def write_config
160     ios = File.open($config_file, "w")
161     $xmldoc = Document.new "<booh-classifier-rc version='#{$VERSION}'/>"
162     $xmldoc << XMLDecl.new(XMLDecl::DEFAULT_VERSION, $CURRENT_CHARSET)
163     $config.each_pair { |key, value|
164         elem = $xmldoc.root.add_element key
165         if value.is_a? Hash
166             $config[key].each_pair { |subkey, subvalue|
167                 subelem = elem.add_element subkey
168                 subelem.add_text subvalue.to_s
169             }
170         elsif value.is_a? Array
171             elem.add_text value.join('~~~')
172         else
173             if !value
174                 elem.remove
175             else
176                 elem.add_text value.to_s
177             end
178         end
179     }
180     $xmldoc.write(ios, 0)
181     ios.close
182 end
183
184 def save_undo(name, closure, *params)
185     UndoHandler.save_undo(name, closure, [ *params ])
186     $undo_mb.sensitive = true
187     $redo_mb.sensitive = false
188 end
189
190 def get_mem
191     IO.readlines('/proc/self/status').join =~ /VmRSS.*?(\d+)\s*kB/
192     msg 3, "RSS: #{$1}"
193     return $1.to_i
194 end
195
196 def show_mem(*txt)
197     txt.length > 0 and print txt[0]
198     msg 2, "RSS: #{get_mem}"
199 end
200
201 class Gdk::Color
202     def darker
203         color = dup
204         color.red = [ color.red - 10000, 0 ].max
205         color.green = [ color.green - 10000, 0 ].max
206         color.blue = [ color.blue - 10000, 0 ].max
207         return color
208     end
209     def lighter
210         color = dup
211         color.red = [ color.red + 10000, 65535 ].min
212         color.green = [ color.green + 10000, 65535 ].min
213         color.blue = [ color.blue + 10000, 65535 ].min
214         return color
215     end
216 end
217
218 $color_red = Gdk::Color.new(65535, 0, 0)
219 $colors = [ Gdk::Color.new(0, 65535, 0),
220             Gdk::Color.new(0, 0, 65535),
221             Gdk::Color.new(65535, 65535, 0),
222             Gdk::Color.new(0, 65535, 65535),
223             Gdk::Color.new(65535, 0, 65535) ]
224
225 class Label
226     attr_accessor :color, :name, :button
227     def initialize(name)
228         @name = name
229     end
230 end
231
232 class Entry
233     @@thumbnails_height = 64
234     @@max_width = nil
235     def Entry.thumbnails_height
236         return @@thumbnails_height
237     end
238
239     attr_accessor :path, :type, :angle, :button, :image, :alignment, :removed, :labeled
240
241     def initialize(path, type)
242         @path = path
243         @type = type
244         if @@max_width.nil?
245             @@max_width = $main_window.root_window.size[0] - $labels_vbox.allocation.width
246         end
247         @protect_cleanup = Mutex.new
248     end
249
250     def pixbuf_full
251         @protect_cleanup.synchronize {
252             if @pixbuf_full.nil?
253                 msg 3, ">>> pixbuf_full #{path}"
254                 load_into_pixbuf_full
255             end
256             return @pixbuf_full
257         }
258     end
259     def free_pixbuf_full
260         @protect_cleanup.synchronize {
261             if @pixbuf_full.nil?
262                 return false
263             else
264                 msg 3, ">>> free_pixbuf_full #{path}"
265                 @pixbuf_full = nil
266                 return true
267             end
268         }
269     end
270     def pixbuf_main(width, height)
271         @protect_cleanup.synchronize {
272             if @pixbuf_main.nil? || width != @width || height != @height
273                 msg 3, ">>> pixbuf_main #{path}"
274                 @width = width
275                 @height = height
276                 load_into_pixbuf_full  #- make sure it is loaded
277                 if @pixbuf_full.width.to_f / @pixbuf_full.height > width.to_f / height
278                     resized_height = @pixbuf_full.height * (width.to_f/@pixbuf_full.width)
279                     if @pixbuf_full.width > width || @pixbuf_full.height > resized_height
280                         @pixbuf_main = @pixbuf_full.scale(width, resized_height, Gdk::Pixbuf::INTERP_BILINEAR)
281                     else
282                         @pixbuf_main = @pixbuf_full
283                     end
284                 else
285                     resized_width = @pixbuf_full.width * (height.to_f/@pixbuf_full.height)
286                     if @pixbuf_full.width > resized_width || @pixbuf_full.height > height
287                         @pixbuf_main = @pixbuf_full.scale(resized_width, height, Gdk::Pixbuf::INTERP_BILINEAR)
288                     else
289                         @pixbuf_main = @pixbuf_full
290                     end
291                 end
292             end
293             return @pixbuf_main
294         }
295     end
296     def free_pixbuf_main
297         @protect_cleanup.synchronize {
298             if @pixbuf_main.nil?
299                 return false
300             else
301                 msg 3, ">>> free_pixbuf_main #{path}"
302                 @pixbuf_main = nil
303                 return true
304             end
305         }
306     end
307     def pixbuf_thumbnail
308         return @protect_cleanup.synchronize {
309             if @pixbuf_thumbnail.nil?
310                 msg 3, ">>> pixbuf_thumbnail #{path}"
311                 load_into_pixbuf_full  #- make sure it is loaded
312                 @pixbuf_thumbnail = @pixbuf_full.scale(@pixbuf_full.width * (@@thumbnails_height.to_f/@pixbuf_full.height), @@thumbnails_height, Gdk::Pixbuf::INTERP_BILINEAR)
313             end
314             return @pixbuf_thumbnail
315         }
316     end
317     def free_pixbuf_thumbnail
318         @protect_cleanup.synchronize {
319             if @pixbuf_thumbnail.nil?
320                 return false
321             else
322                 msg 3, ">>> free_pixbuf_thumbnail #{path}"
323                 @pixbuf_thumbnail = nil
324                 return true
325             end
326         }
327     end
328
329     def outline_color
330         if removed
331             return $color_red
332         elsif labeled
333             return labeled.color
334         else
335             return nil
336         end
337     end
338
339     def show_bg
340         if outline_color.nil?
341             button.modify_bg(Gtk::StateType::NORMAL, nil)
342             button.modify_bg(Gtk::StateType::PRELIGHT, nil)
343             button.modify_bg(Gtk::StateType::ACTIVE, nil)
344         else
345             button.modify_bg(Gtk::StateType::NORMAL, outline_color)
346             button.modify_bg(Gtk::StateType::PRELIGHT, outline_color.lighter)
347             button.modify_bg(Gtk::StateType::ACTIVE, outline_color)
348         end
349     end
350
351     def get_beautified_name
352         if type == 'image'
353             size = get_image_size(path)
354             return _("%s (%sx%s, %s KB)") % [File.basename(@path).gsub(/\.[^.]+$/, ''),
355                                              size[:x],
356                                              size[:y],
357                                              commify(file_size(path)/1024)]
358         else
359             return _("%s (video - %s KB)") % [File.basename(@path).gsub(/\.[^.]+$/, ''),
360                                              commify(file_size(path)/1024)]
361         end
362     end
363
364     private
365     def cleanup_dir(dir)
366         Dir.entries(dir).each { |file| file != '.' && file != '..' and File.delete(File.join(dir, file)) }
367         Dir.delete(dir)
368     end
369
370     def load_into_pixbuf_full
371         if @pixbuf_full.nil?
372             msg 3, ">>> load_into_pixbuf_full #{path}"
373             if @type == 'video'
374                 tmp = Tempfile.new("boohclassifiertemp")
375                 tmp.close!
376                 Dir.mkdir(dest_dir = tmp.path)
377                 orig_base = File.basename(path)
378                 tmpdir = gen_video_thumbnail(path, false, 0)
379                 if tmpdir.nil?
380                     return
381                 end
382                 image_path = "#{tmpdir}/00000001.jpg"
383             else
384                 image_path = @path
385             end
386             begin
387                 #- use a pixbuf loader to allow the loading thread to be interrupted by the main thread more often, to keep the UI responsive even
388                 #- if loaded pictures are several MBs large
389                 loader = Gdk::PixbufLoader.new
390                 loader.signal_connect('size-prepared') { |l,w,h|
391                     maxdim = w > h ? w : h
392                     if maxdim > @@max_width
393                         #- save memory and speedup (+35%) loading 
394                         loader.set_size(w * (factor = @@max_width.to_f/maxdim), h * factor)
395                         puts factor
396                     end
397                 }
398                 loader.signal_connect('area-prepared') { @pixbuf_full = loader.pixbuf }
399                 file = File.new(image_path)
400                 while (chunk = file.read(4096)) != nil
401                     loader.write(chunk)
402                 end
403                 file.close
404                 loader.close
405                 if @pixbuf_full.nil?
406                     raise "Loaded pixbuf nil - #{path} #{image_path}"
407                 end
408             rescue Gdk::PixbufError
409                 msg 0, "Cannot load #{image_path}: #{$!}"
410                 return
411             ensure
412                 if @type == 'video'
413                     File.delete(image_path)
414                     Dir.rmdir(tmpdir)
415                 end
416             end
417             if @pixbuf_full
418                 if @angle.nil?
419                     if @type == 'image'
420                         @angle = guess_rotate(image_path)
421                     else
422                         @angle = 0
423                     end
424                 end
425                 if @angle != 0
426                     msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
427                     @pixbuf_full = rotate_pixbuf(@pixbuf_full, @angle)
428                 end
429             end
430             if @type == 'video'
431                 cleanup_dir(dest_dir)
432             end
433         end
434     end
435
436     def to_s
437         @path
438     end
439 end
440
441 $allentries = []
442
443 class MainView < Gtk::DrawingArea
444
445     @@borders_thickness = 5
446     @@borders_length = 25
447
448     def MainView.get_usable_width(available_width)
449         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
450     end
451
452     def MainView.get_usable_height(available_height)
453         return available_height - @@borders_thickness * 2
454     end
455     
456     def initialize
457         super()
458         signal_connect('expose-event') { draw }
459         signal_connect('configure-event') { update_shown; GC.start }
460         signal_connect('realize') {
461             @preloader = Thread.new {
462                 #- background preloading
463                 while true
464                     msg 3, "*** >> background main preloading triggered..."
465                     if ! @entry.nil?
466                         index = $allentries.index(@entry)
467                         w, h = window.size
468                         w = MainView.get_usable_width(w)
469                         h = MainView.get_usable_height(h)
470                         for j in 1 .. $config['preload-distance'].to_i
471                             i = index + j
472                             if i < $allentries.size
473                                 $allentries[i].pixbuf_main(w, h)
474                             end
475                             i = index - j
476                             if i >= 0
477                                 $allentries[i].pixbuf_main(w, h)
478                             end
479                             GC.start
480                             mem = get_mem
481                             if mem > $config['cache-memory-use-figure']
482                                 msg 3, "too much RSS, stopping main preloading"
483                                 break
484                             end
485                         end
486                         check_memory_free_cache_if_needed
487                     end
488                     msg 3, "*** << background main preloading stopping"
489                     Thread.stop
490                 end
491             }
492             @preloader.priority = -2
493         }
494     end
495
496     def set_shown_entry(entry)
497         if ! entry.nil? && entry == @entry
498             return
499         end
500         if ! entry.nil?
501             if ! entry.button
502                 #- not loaded yet
503                 return
504             else
505                 entry.button.grab_focus
506             end
507         end
508         @entry = entry
509         redraw        
510         @preloader.run
511     end
512
513     def get_shown_entry
514         return @entry
515     end
516
517     def show_next_entry(entry)
518         index = $allentries.index(entry) + 1
519         if index < $allentries.size
520             set_shown_entry($allentries[index])
521         end
522     end
523
524     def redraw
525         update_shown
526         w, h = window.size
527         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
528         window.clear
529         draw
530         window.end_paint
531     end
532
533     def update_shown
534         if @entry
535             width, height = window.size 
536             usable_width = MainView.get_usable_width(width)
537             usable_height = MainView.get_usable_height(height)
538             @pixbuf = @entry.pixbuf_main(usable_width, usable_height)
539             @xpos = (width - @pixbuf.width)/2
540             @ypos = (height - @pixbuf.height)/2
541             @preloader.run
542         else
543             @pixbuf = nil
544         end
545     end
546
547     def draw
548         if @pixbuf
549             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
550             if @entry && @entry.type == 'video'
551                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
552             end
553             if ! @entry.outline_color.nil?
554                 gc = Gdk::GC.new(window)
555                 colormap.alloc_color(@entry.outline_color, false, true)
556                 gc.set_foreground(@entry.outline_color)
557                 if @entry && @entry.type == 'video'
558                     xleft = @xpos - $videoborder_pixbuf.width
559                     xright = @xpos + @pixbuf.width + $videoborder_pixbuf.width
560                 else
561                     xleft = @xpos
562                     xright = @xpos + @pixbuf.width
563                 end
564                 window.draw_polygon(gc, true, [[xleft - @@borders_thickness, @ypos - @@borders_thickness],
565                                                [xright + @@borders_thickness, @ypos - @@borders_thickness],
566                                                [xright + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
567                                                [xleft - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
568                                                [xleft - @@borders_thickness, @ypos - 1],
569                                                [xleft - 1, @ypos - 1],
570                                                [xleft - 1, @ypos + @pixbuf.height + 1],
571                                                [xright + 1, @ypos + @pixbuf.height + 1],
572                                                [xright + 1, @ypos - 1],
573                                                [xleft - @@borders_thickness, @ypos - 1]])
574             end
575         end
576     end
577 end
578
579 def check_memory_free_cache_if_needed
580     GC.start
581     mem = get_mem
582     i = $allentries.index($mainview.get_shown_entry)
583     msg 3, "mem: #{mem} index: #{i}"
584     return if i.nil?
585     ($allentries.size - 1).downto(1) { |j|
586         if mem < $config['cache-memory-use-figure'] * 2 / 3
587             break
588         end
589         index = i + j
590         msg 3, "too much RSS, freeing full size of #{i+j} and #{i-j}..."
591         freedsomething = false
592         if i + j < $allentries.size
593             freedsomething |= $allentries[i+j].free_pixbuf_full
594         end
595         if i - j > 0
596             freedsomething |= $allentries[i-j].free_pixbuf_full
597         end
598         if freedsomething
599             GC.start
600             mem = get_mem
601             msg 3, "\tmem now: #{mem}"
602         end
603     }
604 end
605
606 def autoscroll_if_needed(button)
607     xpos_left = button.allocation.x
608     xpos_right = button.allocation.x + button.allocation.width
609     hadj = $imagesline_sw.hadjustment
610     current_minx_visible = hadj.value
611     current_maxx_visible = hadj.value + hadj.page_size
612     if xpos_left < current_minx_visible
613         #- autoscroll left
614         newval = hadj.value - (current_minx_visible - xpos_left)
615         hadj.value = newval
616         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
617     elsif xpos_right > current_maxx_visible
618         #- autoscroll right
619         newval = hadj.value + (xpos_right - current_maxx_visible)
620         if newval > hadj.upper - hadj.page_size
621             newval = hadj.upper - hadj.page_size
622         end
623         hadj.value = newval
624         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
625     end
626 end
627
628 def show_popup(parent, msg, *options)
629     dialog = Gtk::Dialog.new
630     if options[0]
631         options = options[0]
632     else
633         options = {}
634     end
635     if options[:title]
636         dialog.title = options[:title]
637     else
638         dialog.title = utf8(_("Booh message"))
639     end
640     lbl = Gtk::Label.new
641     if options[:nomarkup]
642         lbl.text = msg
643     else
644         lbl.markup = msg
645     end
646     if options[:centered]
647         lbl.set_justify(Gtk::Justification::CENTER)
648     end
649     if options[:selectable]
650         lbl.selectable = true
651     end
652     if options[:topwidget]
653         dialog.vbox.add(options[0][:topwidget])
654     end
655     if options[:scrolled]
656         sw = Gtk::ScrolledWindow.new(nil, nil)
657         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
658         sw.add_with_viewport(lbl)
659         dialog.vbox.add(sw)
660         dialog.set_default_size(500, 600)
661     else
662         dialog.vbox.add(lbl)
663         dialog.set_default_size(200, 120)
664     end
665     if options[:bottomwidget]
666         dialog.vbox.add(options[:bottomwidget])
667     end
668     if options[:okcancel]
669         dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
670     end
671     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
672
673     if options[:pos_centered]
674         dialog.window_position = Gtk::Window::POS_CENTER
675     else
676         dialog.window_position = Gtk::Window::POS_MOUSE
677     end
678
679     if options[:linkurl]
680         linkbut = Gtk::Button.new('')
681         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
682         linkbut.signal_connect('clicked') {
683             open_url(options[0][:linkurl] + '/index.html')
684             dialog.response(Gtk::Dialog::RESPONSE_OK)
685             set_mousecursor_normal
686         }
687         linkbut.relief = Gtk::RELIEF_NONE
688         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
689         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
690         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
691     end
692
693     dialog.show_all
694
695     if options[:stuff_connector]
696         options[:stuff_connector].call({ :dialog => dialog })
697     end
698                                         
699     if !options[:not_transient]
700         dialog.transient_for = parent
701         dialog.run { |response|
702             if options[:data_getter]
703                 options[:data_getter].call
704             end
705             dialog.destroy
706             if options[:okcancel]
707                 return response == Gtk::Dialog::RESPONSE_OK
708             end
709         }
710     else
711         dialog.signal_connect('response') { dialog.destroy }
712     end
713 end
714
715 def video_view(entry)
716     cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
717     msg 2, cmd
718     system(cmd)
719 end
720
721 def thumbnail_keypressed(entry, event)
722     if event.state & Gdk::Window::MOD1_MASK != 0
723         #- ALT pressed: Alt-Left and Alft-Right rotate
724         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
725             if event.keyval == Gdk::Keyval::GDK_Left
726                 entry.angle = (entry.angle - 90) % 360
727             else
728                 entry.angle = (entry.angle + 90) % 360
729             end
730             entry.free_pixbuf_full
731             entry.free_pixbuf_main
732             entry.free_pixbuf_thumbnail
733             $mainview.redraw
734             entry.image.pixbuf = entry.pixbuf_thumbnail
735             if $config['rotate-set-exif'] == 'true'
736                 Exif.set_orientation(entry.path, angle_to_exif_orientation(entry.angle))
737             end
738         end
739
740     elsif event.state & Gdk::Window::CONTROL_MASK != 0
741         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo
742         if event.keyval == Gdk::Keyval::GDK_z
743             perform_undo
744         end
745         if event.keyval == Gdk::Keyval::GDK_r
746             perform_redo
747         end
748
749     else
750         removed_before = entry.removed
751         label_before = entry.labeled
752
753         if event.keyval == Gdk::Keyval::GDK_Delete
754             entry.removed = true
755             entry.labeled = nil
756             entry.show_bg
757             $mainview.show_next_entry(entry)
758             update_visibility(entry)
759
760             save_undo(_("set for removal"),
761                       proc {
762                           entry.removed = removed_before
763                           entry.labeled = label_before
764                           entry.show_bg
765                           update_visibility(entry)
766                           if entry.button.visible?
767                               $mainview.set_shown_entry(entry)
768                           end
769                           proc {
770                               entry.removed = true
771                               entry.labeled = nil
772                               entry.show_bg
773                               update_visibility(entry)
774                               if entry.button.visible?
775                                   $mainview.set_shown_entry(entry)
776                               end
777                           }
778                       })
779
780         elsif event.keyval == Gdk::Keyval::GDK_space
781             if entry.labeled
782                 msg = _("Cleared label")
783             elsif entry.removed
784                 msg = _("Cleared set for removal")
785             end
786             entry.removed = false
787             entry.labeled = nil
788             entry.show_bg
789             $mainview.show_next_entry(entry)
790
791             save_undo(msg,
792                       proc {
793                           entry.removed = removed_before
794                           entry.labeled = label_before
795                           entry.show_bg
796                           $mainview.set_shown_entry(entry)
797                           proc {
798                               entry.removed = false
799                               entry.labeled = nil
800                               entry.show_bg
801                               $mainview.set_shown_entry(entry)
802                           }
803                       })
804
805         elsif event.keyval == Gdk::Keyval::GDK_Return && entry.type == 'video'
806             video_view(entry)
807
808         else
809             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
810             if char =~ /^[a-zA-z0-9]$/
811                 label = $labels[char]
812                 
813                 if label.nil?
814                     vb = Gtk::VBox.new(false, 0)
815                     vb.pack_start(entry = Gtk::Entry.new.set_text(char), false, false)
816                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::ColorButton.new))
817                     color = bt.color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
818                     bt.signal_connect('color-set') { color = bt.color }
819                     text = nil
820                     entry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
821                         while $labels.has_key?(entry.text[0,1])
822                             entry.text = entry.text.sub(/./, '')
823                         end
824                     }
825                     if show_popup($main_window,
826                                   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,
827                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = entry.text },
828                                     :stuff_connector => proc { |stuff| entry.select_region(0, 0)
829                                                                        entry.position = -1
830                                                                        entry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
831                         if text.length > 0
832                             char = text[0,1]  #- in case it changed
833                             label = Label.new(text)
834                             label.color = color
835                             $labels[char] = label
836                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
837                             $labels_vbox.pack_start(label.button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
838                             label.button.active = true
839                             label.button.signal_connect('toggled') { update_all_visibilities }
840                             evt.modify_bg(Gtk::StateType::NORMAL, label.color)
841                             evt.modify_bg(Gtk::StateType::PRELIGHT, label.color.lighter.lighter)
842                             evt.modify_bg(Gtk::StateType::ACTIVE, label.color.lighter)
843                         end
844                     end
845
846                 else
847                     entry.removed = false
848                     entry.labeled = label
849                     entry.show_bg
850                     $mainview.show_next_entry(entry)
851                     update_visibility(entry)
852
853                     save_undo(_("set label"),
854                               proc {
855                                   entry.removed = removed_before
856                                   entry.labeled = label_before
857                                   entry.show_bg
858                                   update_visibility(entry)
859                                   if entry.button.visible?
860                                       $mainview.set_shown_entry(entry)
861                                   end
862                                   proc {
863                                       entry.removed = false
864                                       entry.labeled = label
865                                       entry.show_bg
866                                       update_visibility(entry)
867                                       if entry.button.visible?
868                                           $mainview.set_shown_entry(entry)
869                                       end
870                                   }
871                               })
872                 end
873             end
874         end
875     end
876 end
877
878 def sb_msg(msg)
879     $statusbar.pop(0)
880     if msg
881         $statusbar.push(0, utf8(msg))
882     end
883 end
884
885 def real_show_entry(entry, tooltips, grab_focus)
886     #- for scoping the actual reference to 'entry'
887     gtk_thread_protect(proc {
888         msg 3, "using entry #{entry}"
889         entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
890         if entry.type == 'video'
891             entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
892                                                              pack_start(entry.image).
893                                                              pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
894             da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
895             da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
896         else
897             entry.button = Gtk::Button.new.set_image(entry.image)
898         end
899         tooltips.set_tip(entry.button, entry.get_beautified_name, nil)
900         $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
901         entry.button.signal_connect('clicked') {
902             if (last_shown = $mainview.get_shown_entry) != entry
903                 $mainview.set_shown_entry(entry)
904                 entry.alignment.set(0.5, 0, 0, 0)
905                 sb_msg(_("Selected %s") % entry.get_beautified_name)
906                 last_shown.nil? or last_shown.alignment.set(0.5, 1, 0, 0)
907             end
908         }
909         entry.button.signal_connect('button-press-event') { |w, event|
910             if entry.type == 'video' && event.event_type == Gdk::Event::BUTTON2_PRESS
911                 video_view(entry)
912             end
913         }
914         entry.button.signal_connect('focus-in-event') { entry.button.clicked; autoscroll_if_needed(entry.button) }
915         entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
916         if grab_focus
917             entry.button.grab_focus
918         end
919         update_visibility(entry)
920     })
921 end
922
923 def show_entries
924     $images_loader = Thread.new {
925         t1 = Time.now
926         sb_msg(_("Loading images..."))
927         tooltips = Gtk::Tooltips.new
928         counter = 0
929         toremove = []
930         grab_focus = true
931         i = 0
932         total_size = 0
933         while i < $allentries.size
934             entry = $allentries[i]
935             if entry.pixbuf_full
936                 total_size += file_size(entry.path)
937                 entry.pixbuf_thumbnail
938                 real_show_entry(entry, tooltips, grab_focus)
939                 grab_focus = false
940                 if i % 4 == 0
941                     check_memory_free_cache_if_needed
942                 end
943                 counter += 1
944                 i = i + 1
945
946             else
947                 $allentries.delete_at(i)
948             end
949         end
950         check_memory_free_cache_if_needed
951         sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ counter, commify(total_size / 1024), Time.now - t1 ])
952     }
953     $images_loader.priority = -1
954 end
955
956 def reset_all
957     $images_loader and $images_loader.kill
958     reset_labels
959     reset_thumbnails
960     $mainview.set_shown_entry(nil)
961     sb_msg(nil)
962 end
963
964 def open_dir(path)
965     #- remove visual stuff, so that user will see something is happening
966     reset_all
967     sb_msg(_("Scanning source directory..."))
968
969     path = File.expand_path(path.sub(%r|/$|, ''))
970     examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
971     #- validate first
972     examined_dirs.each { |dir|
973         if dir =~ /'/
974             return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
975         end
976         Dir.entries(dir).each { |file|
977             if file =~ /['"\[\]]/
978                 return utf8(_("Files can't contain any of the characters ', \", [ or ], sorry: %s") % "#{dir}/#{file}")
979             end
980         }
981     }
982
983     #- scan for populate second
984     examined_dirs.each { |dir|
985         if File.basename(dir) =~ /^\./
986             msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
987             next
988         end
989         entries = Dir.entries(dir)
990         if $sort_by_exif_date
991             dates = {}
992             entries.each { |file|
993                 date_time = Exif.datetimeoriginal(File.join(dir, file))
994                 if ! date_time.nil?
995                     dates[file] = date_time
996                 end
997             }
998             entries = smartsort(entries, dates)
999         else
1000             entries.sort!
1001         end
1002         entries.each { |file|
1003             type = entry2type(file)
1004             if type
1005                 $allentries << Entry.new(File.join(dir, file), type)
1006             end
1007         }
1008     }
1009     $workingdir = path
1010     show_entries
1011     $execute.sensitive = true
1012     return nil
1013 end
1014
1015 def open_dir_popup
1016     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
1017                                     nil,
1018                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
1019                                     nil,
1020                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1021     fc.transient_for = $main_window
1022     if $workingdir
1023         fc.current_folder = $workingdir
1024     end
1025     ok = false
1026     while !ok
1027         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1028             msg = open_dir(fc.filename)
1029             if msg
1030                 show_popup(fc, msg)
1031                 ok = false
1032             else
1033                 ok = true
1034             end
1035         else
1036             ok = true
1037         end
1038     end
1039     fc.destroy
1040 end
1041
1042 def gtk_thread_protect(proc, *params)
1043     if Thread.current == Thread.main
1044         proc.call(*params)
1045     else
1046         $protect_gtk_pending_calls.synchronize {
1047             $gtk_pending_calls << [ proc, params ]
1048         }
1049     end
1050 end
1051
1052 def gtk_thread_flush
1053     $protect_gtk_pending_calls.synchronize {
1054         if $gtk_pending_calls.size > 0
1055             elem = $gtk_pending_calls.shift
1056             elem[0].call(*elem[1])
1057         end
1058     }
1059 end
1060
1061 def try_quit(*options)
1062     Gtk.main_quit
1063 end
1064
1065 def execute
1066     dialog = Gtk::Dialog.new
1067     dialog.title = utf8(_("Booh message"))
1068
1069     vb1 = Gtk::VBox.new(false, 5)
1070     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!")))
1071     vb1.pack_start(label, false, false)
1072
1073     table = Gtk::Table.new(0, 0, false)
1074     table.set_row_spacings(5)
1075     table.set_column_spacings(5)
1076     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)
1077     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)
1078     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)
1079     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)
1080     add_row = proc { |row, name, color, truthproc, normal|
1081         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)),
1082                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1083         counter = 0
1084         examples = Gtk::HBox.new(false, 5)
1085         $allentries.each { |entry|
1086             if truthproc.call(entry)
1087                 counter += 1
1088                 if counter < 4
1089                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1090                     if entry.type == 'video'
1091                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1092                                                   pack_start(thumbnail).
1093                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1094                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1095                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1096                     end
1097                     examples.pack_start(thumbnail, false, false)
1098                 elsif counter == 4
1099                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1100                 end
1101             end
1102         }
1103         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1104         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1105
1106         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1107         iter = combostore.append
1108         if normal
1109             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1110             iter[1] = utf8(_("Move to:"))
1111             iter = combostore.append
1112             iter[0] = $main_window.render_icon(Gtk::Stock::PASTE, Gtk::IconSize::MENU)
1113             iter[1] = utf8(_("Copy to:"))
1114         else
1115             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1116             iter[1] = utf8(_("Permanently remove"))
1117         end
1118         iter = combostore.append
1119         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1120         iter[1] = utf8(_("Do nothing"))
1121         combo = Gtk::ComboBox.new(combostore)
1122         combo.active = 0
1123         renderer = Gtk::CellRendererPixbuf.new
1124         combo.pack_start(renderer, false)
1125         combo.set_attributes(renderer, :pixbuf => 0)
1126         renderer = Gtk::CellRendererText.new
1127         combo.pack_start(renderer, true)
1128         combo.set_attributes(renderer, :text => 1)
1129
1130         if normal
1131             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1132             lastpath = $workingdir
1133             pathbutton.signal_connect('clicked') {
1134                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1135                                                 nil,
1136                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1137                                                 nil,
1138                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1139                 fc.transient_for = dialog
1140                 fc.current_folder = lastpath
1141                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1142                     pathlabel.text = fc.filename
1143                 end
1144                 lastpath = fc.filename
1145                 fc.destroy
1146             }
1147             combo.signal_connect('changed') {
1148                 pathbutton.sensitive = combo.active <= 1
1149             }
1150             vb = Gtk::VBox.new(false, 5)
1151             vb.pack_start(combo, false, false)
1152             vb.pack_start(pathbutton, false, false)
1153             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1154             { :combo => combo, :pathlabel => pathlabel }
1155         else
1156             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1157             { :combo => combo }
1158         end
1159     }
1160     stuff = {}
1161     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), $color_red, proc { |entry| entry.removed }, false)
1162     $labels.values.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1163     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1164
1165     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1166     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1167     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 ]))
1168     if toremove_amount > 0
1169         vb1.pack_start(check_removal, false, false)
1170         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1171             check_removal.sensitive = widget.active == 0
1172         }
1173     end
1174
1175     dialog.vbox.add(vb1)
1176
1177     dialog.set_default_size(800, 600)
1178     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1179     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1180     dialog.window_position = Gtk::Window::POS_MOUSE
1181     dialog.transient_for = $main_window
1182
1183     dialog.show_all
1184
1185     while true
1186         dialog.run { |response|        
1187             if response == Gtk::Dialog::RESPONSE_OK
1188                 if toremove_amount > 0 && ! check_removal.active? && stuff['toremove'][:combo].active == 0
1189                     show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1190                     break
1191                 end
1192                 problem = false
1193                 label2entries = {}
1194                 $labels.values.each { |label| label2entries[label] = [] }
1195                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1196                 stuff.keys.each { |key|
1197                     if key.is_a?(Label) && stuff[key][:combo].active <= 1
1198                         destination = stuff[key][:pathlabel].text
1199                         if destination[0] != ?/
1200                             show_popup(dialog, utf8(_("You have not selected a directory where to move/copy %s.") % key.name))
1201                             problem = true
1202                             break
1203                         end
1204                         begin
1205                             Dir.mkdir(destination)
1206                         rescue Errno::EEXIST
1207                         end
1208                         begin
1209                             st = File.stat(destination)
1210                         rescue
1211                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not createable.") % [destination, key.name]))
1212                             problem = true
1213                             break
1214                         end
1215                         if ! st.directory? || ! st.writable?
1216                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not writable.") % [destination, key.name]))
1217                             problem = true
1218                             break
1219                         end
1220                         label2entries[key].each { |entry|
1221                             begin
1222                                 File.stat(File.join(destination, File.basename(entry.path)))
1223                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in directory '%s'.") % [ File.basename(entry.path), destination ]))
1224                                 problem = true
1225                                 break
1226                             rescue
1227                             end
1228                         }
1229                         if problem
1230                             break
1231                         end
1232                     end
1233                 }
1234                 if ! problem
1235                     begin
1236                         moved = 0
1237                         copied = 0
1238                         stuff.keys.each { |key|
1239                             if key.is_a?(Label) && stuff[key][:combo].active <= 1
1240                                 destination = stuff[key][:pathlabel].text
1241                                 label2entries[key].each { |entry|
1242                                     if stuff[key][:combo].active == 0
1243                                         File.rename(entry.path, File.join(destination, File.basename(entry.path)))
1244                                         moved += 1
1245                                     elsif stuff[key][:combo].active == 1
1246                                         system("cp -dp '#{entry.path}' '#{destination}'")
1247                                         copied += 1
1248                                     end
1249                                 }
1250                             end
1251                         }
1252                         removed = 0
1253                         if stuff['toremove'][:combo].active == 0
1254                             $allentries.each { |entry|
1255                                 if entry.removed
1256                                     File.delete(entry.path)
1257                                     removed += 1
1258                                 end
1259                             }
1260                         end
1261                     rescue
1262                         msg 1, "woops: #{$!}"
1263                         show_popup(dialog, utf8(_("Unexpected system call error: '%s'.") % $!))
1264                     end
1265                     show_popup(dialog, utf8(_("Successfully moved %d files, copied %d file, and removed %d files.") % [ moved, copied, removed ]))
1266                     dialog.destroy
1267                     reset_all
1268                     return
1269                 end
1270
1271             else
1272                 dialog.destroy
1273                 return
1274             end
1275         }
1276     end
1277 end
1278
1279 def update_visibility(entry)
1280     if ! entry.button
1281         #- not yet loaded
1282         return
1283     end
1284     if entry.labeled
1285         if entry.labeled.button.active?
1286             entry.button.show
1287         else
1288             entry.button.hide
1289         end
1290     elsif entry.removed
1291         if $toremove_button.active?
1292             entry.button.show
1293         else
1294             entry.button.hide
1295         end
1296     else
1297         if $unlabelled_button.active?
1298             entry.button.show
1299         else
1300             entry.button.hide
1301         end
1302     end
1303 end
1304         
1305 def update_all_visibilities
1306     $allentries.each { |entry|
1307         update_visibility(entry)
1308     }
1309     shown = $mainview.get_shown_entry
1310     if shown.nil?
1311         return
1312     end
1313     while shown.button && ! shown.button.visible? && shown != $allentries.last
1314         shown = $allentries[$allentries.index(shown) + 1]
1315     end 
1316     if shown.button && shown.button.visible?
1317         shown.button.grab_focus
1318         return
1319     end
1320     $allentries.reverse.each { |entry|
1321         if entry.button && entry.button.visible?
1322             entry.button.grab_focus
1323             return
1324         end
1325     }
1326 end
1327
1328 def preferences
1329     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1330                              $main_window,
1331                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1332                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1333                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1334
1335     tooltips = Gtk::Tooltips.new
1336     
1337     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1338     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1339                0, 1, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1340     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1341                1, 2, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1342     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1343
1344     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
1345                0, 1, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1346     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1347                1, 2, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1348     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1349
1350     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1351                0, 1, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1352     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(preload_distance = Gtk::SpinButton.new(0, 50, 1).set_value($config['preload-distance'].to_i)),
1353                1, 2, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1354     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1355
1356     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1357                0, 1, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1358     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1359                1, 2, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1360     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1361                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1362                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1363     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1364     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1365     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1366                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1367                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1368     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1369     cache_memfree_radio.signal_connect('toggled') {
1370         if cache_memfree_radio.active?
1371             cache_memfree_label.sensitive = true
1372             cache_specify_label.sensitive = false
1373         else
1374             cache_specify_label.sensitive = true
1375             cache_memfree_label.sensitive = false
1376         end
1377     }
1378     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1379     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1380         cache_memfree_spin.value = $1.to_i
1381     else
1382         cache_specify_spin.value = $config['cache-memory-use'].to_i
1383     end
1384
1385     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1386                0, 2, 4, 5, Gtk::FILL, Gtk::SHRINK, 2, 2)
1387     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1388     update_exif_orientation_check.active = $config['rotate-set-exif'] == 'true'
1389
1390     dialog.vbox.show_all
1391     dialog.run { |response|
1392         if response == Gtk::Dialog::RESPONSE_OK
1393             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1394             $config['browser'] = from_utf8(browser_entry.text)
1395             $config['preload-distance'] = preload_distance.value
1396             $config['rotate-set-exif'] = update_exif_orientation_check.active?.to_s
1397             if cache_memfree_radio.active?
1398                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1399             else
1400                 $config['cache-memory-use'] = cache_specify_spin.value
1401             end
1402             set_cache_memory_use_figure
1403         end
1404     }
1405     dialog.destroy
1406 end
1407
1408 def perform_undo
1409     if $undo_mb.sensitive?
1410         $redo_mb.sensitive = true
1411         if not more_undoes = UndoHandler.undo($statusbar)
1412             $undo_mb.sensitive = false
1413         end
1414     end
1415 end
1416
1417 def perform_redo
1418     if $redo_mb.sensitive?
1419         $undo_mb.sensitive = true
1420         if not more_redoes = UndoHandler.redo($statusbar)
1421             $redo_mb.sensitive = false
1422         end
1423     end
1424 end
1425
1426 def create_menubar    
1427     #- menu
1428     mb = Gtk::MenuBar.new
1429
1430     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1431     filesubmenu = Gtk::Menu.new
1432     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1433     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1434     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1435     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1436     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1437     filemenu.set_submenu(filesubmenu)
1438     mb.append(filemenu)
1439
1440     open.signal_connect('activate') { open_dir_popup }
1441     $execute.signal_connect('activate') { execute }
1442     quit.signal_connect('activate') { try_quit }
1443
1444     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1445     editsubmenu = Gtk::Menu.new
1446     editsubmenu.append($undo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1447     editsubmenu.append($redo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1448     editsubmenu.append(              Gtk::SeparatorMenuItem.new)
1449     editsubmenu.append(prefs       = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1450     editmenu.set_submenu(editsubmenu)
1451     mb.append(editmenu)
1452
1453     $undo_mb.signal_connect('activate') { perform_undo }
1454     $redo_mb.signal_connect('activate') { perform_redo }
1455     prefs.signal_connect('activate') { preferences }
1456     
1457     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1458     helpsubmenu = Gtk::Menu.new
1459     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1460     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1461     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1462     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1463     helpmenu.set_submenu(helpsubmenu)
1464     mb.append(helpmenu)
1465
1466     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial.html') }
1467     about.signal_connect('activate') { call_about }
1468
1469
1470     #- no toolbar, to save height
1471
1472     return mb
1473 end
1474
1475 def reset_labels
1476     for child in $labels_vbox.children
1477         $labels_vbox.remove(child)
1478     end
1479     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1480     $labels = {}
1481     lbl = Gtk::Label.new.set_markup(utf8(_("<i>unlabelled</i>")))
1482     $labels_vbox.pack_start($unlabelled_button = Gtk::CheckButton.new.add(Gtk::EventBox.new.add(lbl)).show_all)
1483     $unlabelled_button.active = true
1484     $unlabelled_button.signal_connect('toggled') { update_all_visibilities }
1485     lbl = Gtk::Label.new.set_markup(utf8(_("<i>to remove</i>")))
1486     $labels_vbox.pack_start($toremove_button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1487     $toremove_button.active = true
1488     $toremove_button.signal_connect('toggled') { update_all_visibilities }
1489     evt.modify_bg(Gtk::StateType::NORMAL, $color_red)
1490     evt.modify_bg(Gtk::StateType::PRELIGHT, $color_red.lighter.lighter)
1491     evt.modify_bg(Gtk::StateType::ACTIVE, $color_red.lighter)
1492 end
1493
1494 def reset_thumbnails
1495     $allentries = []
1496     for child in $imagesline.children
1497         $imagesline.remove(child)
1498     end
1499 end
1500
1501 def create_main_window
1502
1503     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1504     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1505
1506     mb = create_menubar
1507
1508     main_vbox = Gtk::VBox.new(false, 0)
1509     main_vbox.pack_start(mb, false, false)
1510     mainview_hbox = Gtk::HBox.new
1511     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 0, 0).add($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1512     reset_labels
1513     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1514     main_vbox.pack_start(mainview_hbox, true, true)
1515     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1516     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1517     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1518     main_vbox.pack_start($imagesline_sw, false, false)
1519     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1520
1521     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + 15)
1522
1523     $main_window = Gtk::Window.new
1524     $main_window.add(main_vbox)
1525     $main_window.signal_connect('delete-event') {
1526         try_quit({ :disallow_cancel => true })
1527     }
1528
1529     #- read/save size and position of window
1530     if $config['pos-x'] && $config['pos-y']
1531         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1532     else
1533         $main_window.window_position = Gtk::Window::POS_CENTER
1534     end
1535     msg 3, "size: #{$config['width']}x#{$config['height']}"
1536     $main_window.set_default_size(($config['width'] || 700).to_i, ($config['height'] || 600).to_i)
1537     $main_window.signal_connect('configure-event') {
1538         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1539         x, y = $main_window.window.root_origin
1540         width, height = $main_window.window.size
1541         $config['pos-x'] = x
1542         $config['pos-y'] = y
1543         $config['width'] = width
1544         $config['height'] = height
1545         false
1546     }
1547
1548     $protect_gtk_pending_calls = Mutex.new
1549     $gtk_pending_calls = []
1550     Gtk.timeout_add(50) {
1551         gtk_thread_flush
1552         true
1553     }
1554
1555     $main_window.show_all
1556 end
1557
1558
1559 handle_options
1560 Thread.abort_on_exception = true
1561 read_config
1562 Gtk.init
1563
1564
1565 create_main_window
1566 check_config
1567
1568 if ARGV[0]
1569     open_dir(ARGV[0])
1570 end
1571 Gtk.main
1572
1573 write_config