odie's idea: move currently selection thumbnail up instead of using an arrow
[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
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 ]
46
47 def usage
48     puts _("Usage: %s [OPTION]...") % File.basename($0)
49     $options.each { |ary|
50         printf " %3s, %-15s %s\n", ary[1], ary[0], ary[3]
51     }
52 end
53
54 def handle_options
55     parser = GetoptLong.new
56     parser.set_options(*$options.collect { |ary| ary[0..2] })
57     begin
58         parser.each_option do |name, arg|
59             case name
60             when '--help'
61                 usage
62                 exit(0)
63
64             when '--verbose-level'
65                 $verbose_level = arg.to_i
66
67             end
68         end
69     rescue
70         puts $!
71         usage
72         exit(1)
73     end
74 end
75
76 def startup_memfree
77     if $startup_memfree.nil?
78         meminfo = IO.readlines('/proc/meminfo').join
79         meminfo =~ /MemFree:.*?(\d+)/ or return -1
80         memfree = $1
81         meminfo =~ /Buffers:.*?(\d+)/ and buffers = $1
82         meminfo =~ /Cached:.*?(\d+)/ and cached = $1
83         $startup_memfree = memfree.to_i + buffers.to_i + cached.to_i
84     end
85     return $startup_memfree
86 end
87
88 def set_cache_memory_use_figure
89     
90     if $config['cache-memory-use'] =~ /memfree_(\d+)/
91         $config['cache-memory-use-figure'] = startup_memfree*$1.to_f/100
92     else
93         $config['cache-memory-use-figure'] = $config['cache-memory-use'].to_i
94     end
95     msg 2, _("Cache memory used: %s kB") % $config['cache-memory-use-figure']
96 end
97
98 def read_config
99     $config = {}
100     $config_file = File.expand_path('~/.booh-classifier-rc')
101     if File.readable?($config_file)
102         $xmldoc = REXML::Document.new(File.new($config_file))
103         $xmldoc.root.elements.each { |element|
104             txt = element.get_text
105             if txt
106                 if txt.value =~ /~~~/
107                     $config[element.name] = txt.value.split(/~~~/)
108                 else
109                     $config[element.name] = txt.value
110                 end
111             elsif element.elements.size == 0
112                 $config[element.name] = ''
113             else
114                 $config[element.name] = {}
115                 element.each { |chld|
116                     txt = chld.get_text
117                     $config[element.name][chld.name] = txt ? txt.value : nil
118                 }
119             end
120         }
121     end
122     $config['video-viewer'] ||= '/usr/bin/mplayer %f'
123     $config['browser'] ||= "/usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f"
124     $config['preload-distance'] ||= '5'
125     $config['cache-memory-use'] ||= 'memfree_50%'
126     $config['rotate-set-exif'] ||= 'true'
127     set_cache_memory_use_figure
128 end
129
130 def check_config
131     missing = %w(transcode mencoder).delete_if { |prg| system("which #{prg} >/dev/null 2>/dev/null") }
132     if missing != []
133         show_popup($main_window, utf8(_("The following program(s) are needed to handle videos: '%s'. Videos will be ignored.") % missing.join(', ')), { :pos_centered => true })
134     end
135
136     viewer_binary = $config['video-viewer'].split.first
137     if viewer_binary && ! File.executable?(viewer_binary)
138         show_popup($main_window, utf8(_("The configured video viewer seems to be unavailable.
139 You should fix this in Edit/Preferences so that you can view videos.
140
141 Problem was: '%s' is not an executable file.
142 Hint: don't forget to specify the full path to the executable,
143 e.g. '/usr/bin/mplayer' is correct but 'mplayer' only is not.") % viewer_binary), { :pos_centered => true, :not_transient => true })
144     end
145     browser_binary = $config['browser'].split.first
146     if browser_binary && ! File.executable?(browser_binary)
147         show_popup($main_window, utf8(_("The configured browser seems to be unavailable.
148 You should fix this in Edit/Preferences so that you can open URLs.
149
150 Problem was: '%s' is not an executable file.") % browser_binary), { :pos_centered => true, :not_transient => true })
151     end
152 end
153
154 def write_config
155     ios = File.open($config_file, "w")
156     $xmldoc = Document.new "<booh-classifier-rc version='#{$VERSION}'/>"
157     $xmldoc << XMLDecl.new(XMLDecl::DEFAULT_VERSION, $CURRENT_CHARSET)
158     $config.each_pair { |key, value|
159         elem = $xmldoc.root.add_element key
160         if value.is_a? Hash
161             $config[key].each_pair { |subkey, subvalue|
162                 subelem = elem.add_element subkey
163                 subelem.add_text subvalue.to_s
164             }
165         elsif value.is_a? Array
166             elem.add_text value.join('~~~')
167         else
168             if !value
169                 elem.remove
170             else
171                 elem.add_text value.to_s
172             end
173         end
174     }
175     $xmldoc.write(ios, 0)
176     ios.close
177 end
178
179 def save_undo(name, closure, *params)
180     UndoHandler.save_undo(name, closure, [ *params ])
181     $undo_mb.sensitive = true
182     $redo_mb.sensitive = false
183 end
184
185 def get_mem
186     IO.readlines('/proc/self/status').join =~ /VmRSS.*?(\d+)\s*kB/
187     msg 3, "RSS: #{$1}"
188     return $1.to_i
189 end
190
191 def show_mem(*txt)
192     txt.length > 0 and print txt[0]
193     msg 2, "RSS: #{get_mem}"
194 end
195
196 class Gdk::Color
197     def darker
198         color = dup
199         color.red = [ color.red - 10000, 0 ].max
200         color.green = [ color.green - 10000, 0 ].max
201         color.blue = [ color.blue - 10000, 0 ].max
202         return color
203     end
204     def lighter
205         color = dup
206         color.red = [ color.red + 10000, 65535 ].min
207         color.green = [ color.green + 10000, 65535 ].min
208         color.blue = [ color.blue + 10000, 65535 ].min
209         return color
210     end
211 end
212
213 $color_red = Gdk::Color.new(65535, 0, 0)
214 $colors = [ Gdk::Color.new(0, 65535, 0),
215             Gdk::Color.new(0, 0, 65535),
216             Gdk::Color.new(65535, 65535, 0),
217             Gdk::Color.new(0, 65535, 65535),
218             Gdk::Color.new(65535, 0, 65535) ]
219
220 class Label
221     attr_accessor :color, :name
222     def initialize(name)
223         @name = name
224     end
225 end
226
227 class Entry
228     @@thumbnails_height = 64
229     @@max_height = nil
230     def Entry.thumbnails_height
231         return @@thumbnails_height
232     end
233
234     attr_accessor :path, :type, :angle, :button, :image, :alignment, :removed, :labeled
235
236     def initialize(path, type)
237         @path = path
238         @type = type
239         if @@max_height.nil?
240             @@max_height = $main_window.root_window.size[1]
241         end
242         @protect_cleanup = Mutex.new
243     end
244
245     def pixbuf_full
246         @protect_cleanup.synchronize {
247             if @pixbuf_full.nil?
248                 msg 3, ">>> pixbuf_full #{path}"
249                 load_into_pixbuf_full
250             end
251             return @pixbuf_full
252         }
253     end
254     def free_pixbuf_full
255         @protect_cleanup.synchronize {
256             if @pixbuf_full.nil?
257                 return false
258             else
259                 msg 3, ">>> free_pixbuf_full #{path}"
260                 @pixbuf_full = nil
261                 return true
262             end
263         }
264     end
265     def pixbuf_main(width, height)
266         @protect_cleanup.synchronize {
267             if @pixbuf_main.nil? || width != @width || height != @height
268                 msg 3, ">>> pixbuf_main #{path}"
269                 @width = width
270                 @height = height
271                 load_into_pixbuf_full  #- make sure it is loaded
272                 if @pixbuf_full.width.to_f / @pixbuf_full.height > width.to_f / height
273                     resized_height = @pixbuf_full.height * (width.to_f/@pixbuf_full.width)
274                     if @pixbuf_full.width > width || @pixbuf_full.height > resized_height
275                         @pixbuf_main = @pixbuf_full.scale(width, resized_height, Gdk::Pixbuf::INTERP_BILINEAR)
276                     else
277                         @pixbuf_main = @pixbuf_full
278                     end
279                 else
280                     resized_width = @pixbuf_full.width * (height.to_f/@pixbuf_full.height)
281                     if @pixbuf_full.width > resized_width || @pixbuf_full.height > height
282                         @pixbuf_main = @pixbuf_full.scale(resized_width, height, Gdk::Pixbuf::INTERP_BILINEAR)
283                     else
284                         @pixbuf_main = @pixbuf_full
285                     end
286                 end
287             end
288             return @pixbuf_main
289         }
290     end
291     def free_pixbuf_main
292         @protect_cleanup.synchronize {
293             if @pixbuf_main.nil?
294                 return false
295             else
296                 msg 3, ">>> free_pixbuf_main #{path}"
297                 @pixbuf_main = nil
298                 return true
299             end
300         }
301     end
302     def pixbuf_thumbnail
303         return @protect_cleanup.synchronize {
304             if @pixbuf_thumbnail.nil?
305                 msg 3, ">>> pixbuf_thumbnail #{path}"
306                 load_into_pixbuf_full  #- make sure it is loaded
307                 @pixbuf_thumbnail = @pixbuf_full.scale(@pixbuf_full.width * (@@thumbnails_height.to_f/@pixbuf_full.height), @@thumbnails_height, Gdk::Pixbuf::INTERP_BILINEAR)
308             end
309             return @pixbuf_thumbnail
310         }
311     end
312     def free_pixbuf_thumbnail
313         @protect_cleanup.synchronize {
314             if @pixbuf_thumbnail.nil?
315                 return false
316             else
317                 msg 3, ">>> free_pixbuf_thumbnail #{path}"
318                 @pixbuf_thumbnail = nil
319                 return true
320             end
321         }
322     end
323
324     def outline_color
325         if removed
326             return $color_red
327         elsif labeled
328             return labeled.color
329         else
330             return nil
331         end
332     end
333
334     def show_bg
335         if outline_color.nil?
336             button.modify_bg(Gtk::StateType::NORMAL, nil)
337             button.modify_bg(Gtk::StateType::PRELIGHT, nil)
338             button.modify_bg(Gtk::StateType::ACTIVE, nil)
339         else
340             button.modify_bg(Gtk::StateType::NORMAL, outline_color)
341             button.modify_bg(Gtk::StateType::PRELIGHT, outline_color.lighter)
342             button.modify_bg(Gtk::StateType::ACTIVE, outline_color)
343         end
344     end
345
346     private
347     def cleanup_dir(dir)
348         Dir.entries(dir).each { |file| file != '.' && file != '..' and File.delete(File.join(dir, file)) }
349         Dir.delete(dir)
350     end
351
352     def load_into_pixbuf_full
353         if @pixbuf_full.nil?
354             msg 3, ">>> load_into_pixbuf_full #{path}"
355             if type == 'video'
356                 tmp = Tempfile.new("boohclassifiertemp")
357                 tmp.close!
358                 Dir.mkdir(dest_dir = tmp.path)
359                 orig_base = File.basename(path)
360                 if ! gen_video_thumbnail(path, dest_dir, orig_base, false, 0)
361                     cleanup_dir(dest_dir)
362                     return
363                 end
364                 image_path = "#{dest_dir}/#{orig_base}.jpg000000.jpg"
365             else
366                 image_path = @path
367             end
368             begin
369                 @pixbuf_full = Gdk::Pixbuf.new(image_path)
370             rescue Gdk::PixbufError
371                 msg 0, "Cannot load #{image_path}: #{$!}"
372                 return
373             end
374             if @pixbuf_full
375                 if @angle.nil?
376                     if type == 'image'
377                         @angle = guess_rotate(image_path)
378                     else
379                         @angle = 0
380                     end
381                 end
382                 if @angle != 0
383                     msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
384                     @pixbuf_full = rotate_pixbuf(@pixbuf_full, @angle)
385                 end
386                 if @pixbuf_full.height > @@max_height
387                     #- save a lot of memory, don't store in actual full size
388                     @pixbuf_full = @pixbuf_full.scale(@pixbuf_full.width * (@@max_height.to_f/@pixbuf_full.height), @@max_height, Gdk::Pixbuf::INTERP_BILINEAR)
389                 end
390             end
391             if type == 'video'
392                 cleanup_dir(dest_dir)
393             end
394         end
395     end
396
397     def to_s
398         @path
399     end
400 end
401
402 class MainView < Gtk::DrawingArea
403
404     @@borders_thickness = 5
405     @@borders_length = 25
406
407     def MainView.get_usable_width(available_width)
408         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
409     end
410
411     def MainView.get_usable_height(available_height)
412         return available_height - @@borders_thickness * 2
413     end
414     
415     def initialize
416         super()
417         signal_connect('expose-event') { draw }
418         signal_connect('configure-event') { update_shown; GC.start }
419         signal_connect('realize') {
420             @preloader = Thread.new {
421                 #- background preloading
422                 while true
423                     msg 3, "background main preloading triggered..."
424                     if ! @entry.nil?
425                         index = $allentries.index(@entry)
426                         w, h = window.size
427                         w = MainView.get_usable_width(w)
428                         h = MainView.get_usable_height(h)
429                         for j in 1 .. $config['preload-distance'].to_i
430                             i = index + j
431                             if i < $allentries.size
432                                 $allentries[i].pixbuf_main(w, h)
433                             end
434                             i = index - j
435                             if i >= 0
436                                 $allentries[i].pixbuf_main(w, h)
437                             end
438                             GC.start
439                             mem = get_mem
440                             if mem > $config['cache-memory-use-figure']
441                                 msg 3, "too much RSS, stopping main preloading"
442                                 break
443                             end
444                         end
445                         check_memory_free_cache_if_needed
446                     end
447                     Thread.stop
448                 end
449             }
450             @preloader.priority = -2
451         }
452     end
453
454     def set_shown_entry(entry)
455         if ! entry.nil? && entry == @entry
456             return
457         end
458         if ! entry.nil?
459             if ! entry.button
460                 #- not loaded yet
461                 return
462             else
463                 entry.button.grab_focus
464             end
465         end
466         @entry = entry
467         redraw        
468         @preloader.run
469     end
470
471     def get_shown_entry
472         return @entry
473     end
474
475     def show_next_entry(entry)
476         index = $allentries.index(entry) + 1
477         if index < $allentries.size
478             set_shown_entry($allentries[index])
479         end
480     end
481
482     def redraw
483         update_shown
484         w, h = window.size
485         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
486         window.clear
487         draw
488         window.end_paint
489     end
490
491     def update_shown
492         if @entry
493             width, height = window.size 
494             usable_width = MainView.get_usable_width(width)
495             usable_height = MainView.get_usable_height(height)
496             @pixbuf = @entry.pixbuf_main(usable_width, usable_height)
497             @xpos = (width - @pixbuf.width)/2
498             @ypos = (height - @pixbuf.height)/2
499             @preloader.run
500         else
501             @pixbuf = nil
502         end
503     end
504
505     def draw
506         if @pixbuf
507             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
508             if @entry && @entry.type == 'video'
509                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
510             end
511             if ! @entry.outline_color.nil?
512                 gc = Gdk::GC.new(window)
513                 colormap.alloc_color(@entry.outline_color, false, true)
514                 gc.set_foreground(@entry.outline_color)
515                 window.draw_polygon(gc, true, [[@xpos - @@borders_thickness, @ypos - @@borders_thickness],
516                                                [@xpos + @pixbuf.width + @@borders_thickness, @ypos - @@borders_thickness],
517                                                [@xpos + @pixbuf.width + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
518                                                [@xpos - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
519                                                [@xpos - @@borders_thickness, @ypos - 1],
520                                                [@xpos - 1, @ypos - 1],
521                                                [@xpos - 1, @ypos + @pixbuf.height + 1],
522                                                [@xpos + @pixbuf.width + 1, @ypos + @pixbuf.height + 1],
523                                                [@xpos + @pixbuf.width + 1, @ypos - 1],
524                                                [@xpos - @@borders_thickness, @ypos - 1]])
525             end
526         end
527     end
528 end
529
530 def check_memory_free_cache_if_needed
531     GC.start
532     mem = get_mem
533     i = $allentries.index($mainview.get_shown_entry)
534     msg 3, "mem: #{mem} index: #{i}"
535     return if i.nil?
536     ($allentries.size - 1).downto(1) { |j|
537         if mem < $config['cache-memory-use-figure'] * 2 / 3
538             break
539         end
540         index = i + j
541         msg 3, "too much RSS, freeing full size of #{i+j} and #{i-j}..."
542         freedsomething = false
543         if i + j < $allentries.size
544             freedsomething |= $allentries[i+j].free_pixbuf_full
545         end
546         if i - j > 0
547             freedsomething |= $allentries[i-j].free_pixbuf_full
548         end
549         if freedsomething
550             GC.start
551             mem = get_mem
552             msg 3, "\tmem now: #{mem}"
553         end
554     }
555 end
556
557 def autoscroll_if_needed(button)
558     xpos_left = button.allocation.x
559     xpos_right = button.allocation.x + button.allocation.width
560     hadj = $imagesline_sw.hadjustment
561     current_minx_visible = hadj.value
562     current_maxx_visible = hadj.value + hadj.page_size
563     if xpos_left < current_minx_visible
564         #- autoscroll left
565         newval = hadj.value - (current_minx_visible - xpos_left)
566         hadj.value = newval
567         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
568     elsif xpos_right > current_maxx_visible
569         #- autoscroll right
570         newval = hadj.value + (xpos_right - current_maxx_visible)
571         if newval > hadj.upper - hadj.page_size
572             newval = hadj.upper - hadj.page_size
573         end
574         hadj.value = newval
575         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
576     end
577 end
578
579 def show_popup(parent, msg, *options)
580     dialog = Gtk::Dialog.new
581     if options[0]
582         options = options[0]
583     else
584         options = {}
585     end
586     if options[:title]
587         dialog.title = options[:title]
588     else
589         dialog.title = utf8(_("Booh message"))
590     end
591     lbl = Gtk::Label.new
592     if options[:nomarkup]
593         lbl.text = msg
594     else
595         lbl.markup = msg
596     end
597     if options[:centered]
598         lbl.set_justify(Gtk::Justification::CENTER)
599     end
600     if options[:selectable]
601         lbl.selectable = true
602     end
603     if options[:topwidget]
604         dialog.vbox.add(options[0][:topwidget])
605     end
606     if options[:scrolled]
607         sw = Gtk::ScrolledWindow.new(nil, nil)
608         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
609         sw.add_with_viewport(lbl)
610         dialog.vbox.add(sw)
611         dialog.set_default_size(500, 600)
612     else
613         dialog.vbox.add(lbl)
614         dialog.set_default_size(200, 120)
615     end
616     if options[:bottomwidget]
617         dialog.vbox.add(options[:bottomwidget])
618     end
619     if options[:okcancel]
620         dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
621     end
622     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
623
624     if options[:pos_centered]
625         dialog.window_position = Gtk::Window::POS_CENTER
626     else
627         dialog.window_position = Gtk::Window::POS_MOUSE
628     end
629
630     if options[:linkurl]
631         linkbut = Gtk::Button.new('')
632         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
633         linkbut.signal_connect('clicked') {
634             open_url(options[0][:linkurl] + '/index.html')
635             dialog.response(Gtk::Dialog::RESPONSE_OK)
636             set_mousecursor_normal
637         }
638         linkbut.relief = Gtk::RELIEF_NONE
639         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
640         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
641         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
642     end
643
644     dialog.show_all
645
646     if options[:stuff_connector]
647         options[:stuff_connector].call({ :dialog => dialog })
648     end
649                                         
650     if !options[:not_transient]
651         dialog.transient_for = parent
652         dialog.run { |response|
653             if options[:data_getter]
654                 options[:data_getter].call
655             end
656             dialog.destroy
657             if options[:okcancel]
658                 return response == Gtk::Dialog::RESPONSE_OK
659             end
660         }
661     else
662         dialog.signal_connect('response') { dialog.destroy }
663     end
664 end
665
666 def thumbnail_keypressed(entry, event)
667     if event.state & Gdk::Window::MOD1_MASK != 0
668         #- ALT pressed: Alt-Left and Alft-Right rotate
669         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
670             if event.keyval == Gdk::Keyval::GDK_Left
671                 entry.angle = (entry.angle - 90) % 360
672                 sb_msg(_("Rotated to the left"))
673             else
674                 entry.angle = (entry.angle + 90) % 360
675                 sb_msg(_("Rotated to the right"))
676             end
677             entry.free_pixbuf_full
678             entry.free_pixbuf_main
679             entry.free_pixbuf_thumbnail
680             $mainview.redraw
681             entry.image.pixbuf = entry.pixbuf_thumbnail
682         end
683
684     elsif event.state & Gdk::Window::CONTROL_MASK != 0
685         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo
686         if event.keyval == Gdk::Keyval::GDK_z
687             perform_undo
688         end
689         if event.keyval == Gdk::Keyval::GDK_r
690             perform_redo
691         end
692
693     else
694         removed_before = entry.removed
695         label_before = entry.labeled
696
697         if event.keyval == Gdk::Keyval::GDK_Delete
698             entry.removed = true
699             entry.labeled = nil
700             entry.show_bg
701             $mainview.show_next_entry(entry)
702             sb_msg(_("Set for removal"))
703
704             save_undo(_("set for removal"),
705                       proc {
706                           entry.removed = removed_before
707                           entry.labeled = label_before
708                           entry.show_bg
709                           $mainview.set_shown_entry(entry)
710                           proc {
711                               entry.removed = true
712                               entry.labeled = nil
713                               entry.show_bg
714                               $mainview.set_shown_entry(entry)
715                           }
716                       })
717
718         elsif event.keyval == Gdk::Keyval::GDK_space
719             if entry.labeled
720                 msg = _("Cleared label")
721             elsif entry.removed
722                 msg = _("Cleared set for removal")
723             end
724             entry.removed = false
725             entry.labeled = nil
726             entry.show_bg
727             sb_msg(msg)
728             $mainview.show_next_entry(entry)
729
730             save_undo(msg,
731                       proc {
732                           entry.removed = removed_before
733                           entry.labeled = label_before
734                           entry.show_bg
735                           $mainview.set_shown_entry(entry)
736                           proc {
737                               entry.removed = false
738                               entry.labeled = nil
739                               entry.show_bg
740                               $mainview.set_shown_entry(entry)
741                           }
742                       })
743
744         elsif event.keyval == Gdk::Keyval::GDK_Return && entry.type == 'video'
745             cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
746             msg 2, cmd
747             system(cmd)
748
749         else
750             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
751             if char =~ /^[a-zA-z0-9]$/
752                 label = $labels[char]
753                 
754                 if label.nil?
755                     vb = Gtk::VBox.new(false, 0)
756                     vb.pack_start(entry = Gtk::Entry.new.set_text(char), false, false)
757                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::Button.new(utf8(_("  Change color  ")))))
758                     text = nil
759                     color = nil
760                     bt.signal_connect('clicked') {
761                         color = $colors.shift
762                         if color.nil?
763                             color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
764                         end
765                         bt.modify_bg(Gtk::StateType::NORMAL, color)
766                         bt.modify_bg(Gtk::StateType::PRELIGHT, color)
767                         bt.modify_bg(Gtk::StateType::ACTIVE, color.darker)
768                     }
769                     bt.clicked
770                     entry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
771                         while $labels.has_key?(entry.text[0,1])
772                             entry.text = entry.text.sub(/./, '')
773                         end
774                     }
775                     if show_popup($main_window,
776                                   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,
777                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = entry.text },
778                                     :stuff_connector => proc { |stuff| entry.select_region(0, 0)
779                                                                        entry.position = -1
780                                                                        entry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
781                         if text.length > 0
782                             char = text[0,1]  #- in case it changed
783                             label = Label.new(text)
784                             label.color = color
785                             $labels[char] = label
786                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
787                             $labels_vbox.pack_start(evt = Gtk::EventBox.new.add(lbl).modify_bg(Gtk::StateType::NORMAL, label.color).show_all)
788                         end
789                     end
790
791                 else
792                     entry.removed = false
793                     entry.labeled = label
794                     entry.show_bg
795                     $mainview.show_next_entry(entry)
796                     sb_msg(_("Set label"))
797
798                     save_undo(_("set label"),
799                               proc {
800                                   entry.removed = removed_before
801                                   entry.labeled = label_before
802                                   entry.show_bg
803                                   $mainview.set_shown_entry(entry)
804                                   proc {
805                                       entry.removed = false
806                                       entry.labeled = label
807                                       entry.show_bg
808                                       $mainview.set_shown_entry(entry)
809                                   }
810                               })
811                 end
812             end
813         end
814     end
815 end
816
817 def sb_msg(msg)
818     $statusbar.pop(0)
819     if msg
820         $statusbar.push(0, utf8(msg))
821     end
822 end
823
824 def real_show_entry(entry, tooltips, grab_focus)
825     #- for scoping the actual reference to 'entry'
826     gtk_thread_protect(proc {
827         msg 3, "using entry #{entry}"
828         entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
829         if entry.type == 'video'
830             entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
831                                                              pack_start(entry.image).
832                                                              pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
833             da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
834             da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
835         else
836             entry.button = Gtk::Button.new.set_image(entry.image)
837         end
838         tooltips.set_tip(entry.button, basepath = File.basename(entry.path).gsub(/\.[^.]+$/, ''), nil)
839         $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
840         entry.button.signal_connect('clicked') {
841             if (last_shown = $mainview.get_shown_entry) != entry
842                 $mainview.set_shown_entry(entry)
843                 entry.alignment.set(0.5, 0, 0, 0)
844                 sb_msg(_("Selected %s") % basepath)
845                 last_shown.nil? or last_shown.alignment.set(0.5, 1, 0, 0)
846             end
847         }
848         entry.button.signal_connect('focus-in-event') { entry.button.clicked; autoscroll_if_needed(entry.button) }
849         entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
850         if grab_focus
851             entry.button.grab_focus
852         end
853     })
854 end
855
856 def show_entries
857     e = Thread.new {
858         t1 = Time.now
859         sb_msg(_("Loading images..."))
860         tooltips = Gtk::Tooltips.new
861         counter = 0
862         toremove = []
863         grab_focus = true
864         i = 0
865         total_size = 0
866         while i < $allentries.size
867             entry = $allentries[i]
868             if entry.pixbuf_full
869                 total_size += file_size(entry.path)
870                 entry.pixbuf_thumbnail
871                 real_show_entry(entry, tooltips, grab_focus)
872                 grab_focus = false
873                 if i % 4 == 0
874                     check_memory_free_cache_if_needed
875                 end
876                 counter += 1
877                 i = i + 1
878
879             else
880                 $allentries.delete_at(i)
881             end
882         end
883         check_memory_free_cache_if_needed
884         sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ counter, commify(total_size / 1024), Time.now - t1 ])
885     }
886     e.priority = -1
887 end
888
889 def reset_all
890     reset_labels
891     reset_thumbnails
892     $mainview.set_shown_entry(nil)
893     sb_msg(nil)
894 end
895
896 def open_dir(path)
897     #- remove visual stuff, so that user will see something is happening
898     reset_all
899     sb_msg(_("Scanning source directory..."))
900
901     path = File.expand_path(path.sub(%r|/$|, ''))
902     examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
903     #- validate first
904     examined_dirs.each { |dir|
905         if dir =~ /'/
906             return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
907         end
908         Dir.entries(dir).each { |file|
909             if file =~ /['"\[\]]/
910                 return utf8(_("Files can't contain any of the characters ', \", [ or ], sorry: %s") % "#{dir}/#{file}")
911             end
912         }
913     }
914
915     #- scan for populate second
916     examined_dirs.each { |dir|
917         if File.basename(dir) =~ /^\./
918             msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
919             next
920         end
921         Dir.entries(dir).each { |file|
922             type = entry2type(file)
923            if type
924 #&& $allentries.size < 120
925                 $allentries << Entry.new(File.join(dir, file), type)
926             end
927         }
928     }
929     $workingdir = path
930     show_entries
931     $execute.sensitive = true
932     return nil
933 end
934
935 def open_dir_popup
936     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
937                                     nil,
938                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
939                                     nil,
940                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
941     fc.transient_for = $main_window
942     if $workingdir
943         fc.current_folder = $workingdir
944     end
945     ok = false
946     while !ok
947         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
948             msg = open_dir(fc.filename)
949             if msg
950                 show_popup(fc, msg)
951                 ok = false
952             else
953                 ok = true
954             end
955         else
956             ok = true
957         end
958     end
959     fc.destroy
960 end
961
962 def gtk_thread_protect(proc, *params)
963     if Thread.current == Thread.main
964         proc.call(*params)
965     else
966         $protect_gtk_pending_calls.synchronize {
967             $gtk_pending_calls << [ proc, params ]
968         }
969     end
970 end
971
972 def gtk_thread_flush
973     $protect_gtk_pending_calls.synchronize {
974         if $gtk_pending_calls.size > 0
975             elem = $gtk_pending_calls.shift
976             elem[0].call(*elem[1])
977         end
978     }
979 end
980
981 def try_quit(*options)
982     Gtk.main_quit
983 end
984
985 def execute
986     dialog = Gtk::Dialog.new
987     dialog.title = utf8(_("Booh message"))
988
989     vb1 = Gtk::VBox.new(false, 5)
990     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!")))
991     vb1.pack_start(label, false, false)
992
993     table = Gtk::Table.new(0, 0, false)
994     table.set_row_spacings(5)
995     table.set_column_spacings(5)
996     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)
997     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)
998     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)
999     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)
1000     add_row = proc { |row, name, color, truthproc, normal|
1001         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)),
1002                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1003         counter = 0
1004         examples = Gtk::HBox.new(false, 5)
1005         $allentries.each { |entry|
1006             if truthproc.call(entry)
1007                 counter += 1
1008                 if counter < 4
1009                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1010                     if entry.type == 'video'
1011                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1012                                                   pack_start(thumbnail).
1013                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1014                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1015                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1016                     end
1017                     examples.pack_start(thumbnail, false, false)
1018                 elsif counter == 4
1019                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1020                 end
1021             end
1022         }
1023         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1024         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1025
1026         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1027         iter = combostore.append
1028         if normal
1029             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1030             iter[1] = utf8(_("Move to:"))
1031         else
1032             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1033             iter[1] = utf8(_("Permanently remove"))
1034         end
1035         iter = combostore.append
1036         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1037         iter[1] = utf8(_("Do nothing"))
1038         combo = Gtk::ComboBox.new(combostore)
1039         combo.active = 0
1040         renderer = Gtk::CellRendererPixbuf.new
1041         combo.pack_start(renderer, false)
1042         combo.set_attributes(renderer, :pixbuf => 0)
1043         renderer = Gtk::CellRendererText.new
1044         combo.pack_start(renderer, true)
1045         combo.set_attributes(renderer, :text => 1)
1046
1047         if normal
1048             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1049             lastpath = $workingdir
1050             pathbutton.signal_connect('clicked') {
1051                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1052                                                 nil,
1053                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1054                                                 nil,
1055                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1056                 fc.transient_for = dialog
1057                 fc.current_folder = lastpath
1058                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1059                     pathlabel.text = fc.filename
1060                 end
1061                 lastpath = fc.filename
1062                 fc.destroy
1063             }
1064             combo.signal_connect('changed') {
1065                 pathbutton.sensitive = combo.active == 0
1066             }
1067             vb = Gtk::VBox.new(false, 5)
1068             vb.pack_start(combo, false, false)
1069             vb.pack_start(pathbutton, false, false)
1070             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1071             { :combo => combo, :pathlabel => pathlabel }
1072         else
1073             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1074             { :combo => combo }
1075         end
1076     }
1077     stuff = {}
1078     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), Gdk::Color.new(65535, 0, 0), proc { |entry| entry.removed }, false)
1079     $labels.values.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1080     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1081
1082     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1083     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1084     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 ]))
1085     if toremove_amount > 0
1086         vb1.pack_start(check_removal, false, false)
1087         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1088             check_removal.sensitive = widget.active == 0
1089         }
1090     end
1091
1092     dialog.vbox.add(vb1)
1093
1094     dialog.set_default_size(800, 600)
1095     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1096     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1097     dialog.window_position = Gtk::Window::POS_MOUSE
1098     dialog.transient_for = $main_window
1099
1100     dialog.show_all
1101
1102     while true
1103         dialog.run { |response|        
1104             if response == Gtk::Dialog::RESPONSE_OK
1105                 if toremove_amount > 0 && ! check_removal.active? && stuff['toremove'][:combo].active == 0
1106                     show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1107                     break
1108                 end
1109                 problem = false
1110                 label2entries = {}
1111                 $labels.values.each { |label| label2entries[label] = [] }
1112                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1113                 stuff.keys.each { |key|
1114                     if key.is_a?(Label) && stuff[key][:combo].active == 0
1115                         destination = stuff[key][:pathlabel].text
1116                         if destination[0] != ?/
1117                             show_popup(dialog, utf8(_("You have not selected a directory where to move %s.") % key.name))
1118                             problem = true
1119                             break
1120                         end
1121                         st = File.stat(destination)
1122                         if ! st.directory? || ! st.writable?
1123                             show_popup(dialog, utf8(_("Directory where to move %s is not valid or not writable.") % key.name))
1124                             problem = true
1125                             break
1126                         end
1127                         label2entries[key].each { |entry|
1128                             begin
1129                                 File.stat(File.join(destination, File.basename(entry.path)))
1130                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in '%s'.") % [ File.basename(entry.path), destination ]))
1131                                 problem = true
1132                                 break
1133                             rescue
1134                             end
1135                         }
1136                         if problem
1137                             break
1138                         end
1139                     end
1140                 }
1141                 if ! problem
1142                     begin
1143                         moved = 0
1144                         stuff.keys.each { |key|
1145                             if key.is_a?(Label) && stuff[key][:combo].active == 0
1146                                 destination = stuff[key][:pathlabel].text
1147                                 label2entries[key].each { |entry|
1148                                     File.rename(entry.path, File.join(destination, File.basename(entry.path)))
1149                                     moved += 1
1150                                 }
1151                             end
1152                         }
1153                         removed = 0
1154                         if stuff['toremove'][:combo].active == 0
1155                             $allentries.each { |entry|
1156                                 if entry.removed
1157                                     File.delete(entry.path)
1158                                     removed += 1
1159                                 end
1160                             }
1161                         end
1162                     rescue
1163                         msg 1, "woops: #{$!}"
1164                         show_popup(dialog, utf8(_("Unexpected system call error: '%s'.") % $!))
1165                     end
1166                     show_popup(dialog, utf8(_("Successfully moved %d files and removed %d files.") % [ moved, removed ]))
1167                     dialog.destroy
1168                     reset_all
1169                     return
1170                 end
1171
1172             else
1173                 dialog.destroy
1174                 return
1175             end
1176         }
1177     end
1178 end
1179
1180 def preferences
1181     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1182                              $main_window,
1183                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1184                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1185                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1186
1187     tooltips = Gtk::Tooltips.new
1188     
1189     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1190     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1191                0, 1, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1192     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1193                1, 2, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1194     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1195
1196     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
1197                0, 1, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1198     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1199                1, 2, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1200     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1201
1202     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1203                0, 1, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1204     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(preload_distance = Gtk::SpinButton.new(0, 50, 1).set_value($config['preload-distance'].to_i)),
1205                1, 2, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1206     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1207
1208     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1209                0, 1, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1210     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1211                1, 2, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1212     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1213                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1214                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1215     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1216     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1217     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1218                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1219                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1220     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1221     cache_memfree_radio.signal_connect('toggled') {
1222         if cache_memfree_radio.active?
1223             cache_memfree_label.sensitive = true
1224             cache_specify_label.sensitive = false
1225         else
1226             cache_specify_label.sensitive = true
1227             cache_memfree_label.sensitive = false
1228         end
1229     }
1230     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1231     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1232         cache_memfree_spin.value = $1.to_i
1233     else
1234         cache_specify_spin.value = $config['cache-memory-use'].to_i
1235     end
1236
1237     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1238                0, 2, 4, 5, Gtk::FILL, Gtk::SHRINK, 2, 2)
1239     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1240     update_exif_orientation_check.active = $config['rotate-set-exif']
1241
1242     dialog.vbox.show_all
1243     dialog.run { |response|
1244         if response == Gtk::Dialog::RESPONSE_OK
1245             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1246             $config['browser'] = from_utf8(browser_entry.text)
1247             $config['preload-distance'] = preload_distance.value
1248             $config['rotate-set-exif'] = update_exif_orientation_check.active?
1249             if cache_memfree_radio.active?
1250                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1251             else
1252                 $config['cache-memory-use'] = cache_specify_spin.value
1253             end
1254             set_cache_memory_use_figure
1255         end
1256     }
1257     dialog.destroy
1258 end
1259
1260 def perform_undo
1261     if $undo_mb.sensitive?
1262         $redo_mb.sensitive = true
1263         if not more_undoes = UndoHandler.undo($statusbar)
1264             $undo_mb.sensitive = false
1265         end
1266     end
1267 end
1268
1269 def perform_redo
1270     if $redo_mb.sensitive?
1271         $undo_mb.sensitive = true
1272         if not more_redoes = UndoHandler.redo($statusbar)
1273             $redo_mb.sensitive = false
1274         end
1275     end
1276 end
1277
1278 def create_menubar    
1279     #- menu
1280     mb = Gtk::MenuBar.new
1281
1282     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1283     filesubmenu = Gtk::Menu.new
1284     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1285     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1286     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1287     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1288     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1289     filemenu.set_submenu(filesubmenu)
1290     mb.append(filemenu)
1291
1292     open.signal_connect('activate') { open_dir_popup }
1293     $execute.signal_connect('activate') { execute }
1294     quit.signal_connect('activate') { try_quit }
1295
1296     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1297     editsubmenu = Gtk::Menu.new
1298     editsubmenu.append($undo_mb = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1299     editsubmenu.append($redo_mb = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1300     editsubmenu.append(           Gtk::SeparatorMenuItem.new)
1301     editsubmenu.append(prefs    = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1302     editmenu.set_submenu(editsubmenu)
1303     mb.append(editmenu)
1304
1305     $undo_mb.signal_connect('activate') { perform_undo }
1306     $redo_mb.signal_connect('activate') { perform_redo }
1307     prefs.signal_connect('activate') { preferences }
1308     
1309     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1310     helpsubmenu = Gtk::Menu.new
1311     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1312     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1313     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1314     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1315     helpmenu.set_submenu(helpsubmenu)
1316     mb.append(helpmenu)
1317
1318     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial.html') }
1319     about.signal_connect('activate') { call_about }
1320
1321
1322     #- no toolbar, to save height
1323
1324     return mb
1325 end
1326
1327 def reset_labels
1328     for child in $labels_vbox.children
1329         $labels_vbox.remove(child)
1330     end
1331     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1332     $labels = {}
1333 end
1334
1335 def reset_thumbnails
1336     $allentries = []
1337     for child in $imagesline.children
1338         $imagesline.remove(child)
1339     end
1340 end
1341
1342 def create_main_window
1343
1344     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1345     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1346
1347     mb = create_menubar
1348
1349     main_vbox = Gtk::VBox.new(false, 0)
1350     main_vbox.pack_start(mb, false, false)
1351     mainview_hbox = Gtk::HBox.new
1352     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 0, 0).add($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1353     reset_labels
1354     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1355     main_vbox.pack_start(mainview_hbox, true, true)
1356     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1357     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1358     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1359     main_vbox.pack_start($imagesline_sw, false, false)
1360     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1361
1362     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + 10)
1363
1364     $main_window = Gtk::Window.new
1365     $main_window.add(main_vbox)
1366     $main_window.signal_connect('delete-event') {
1367         try_quit({ :disallow_cancel => true })
1368     }
1369
1370     #- read/save size and position of window
1371     if $config['pos-x'] && $config['pos-y']
1372         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1373     else
1374         $main_window.window_position = Gtk::Window::POS_CENTER
1375     end
1376     msg 3, "size: #{$config['width']}x#{$config['height']}"
1377     $main_window.set_default_size(($config['width'] || 700).to_i, ($config['height'] || 600).to_i)
1378     $main_window.signal_connect('configure-event') {
1379         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1380         x, y = $main_window.window.root_origin
1381         width, height = $main_window.window.size
1382         $config['pos-x'] = x
1383         $config['pos-y'] = y
1384         $config['width'] = width
1385         $config['height'] = height
1386         false
1387     }
1388
1389     $protect_gtk_pending_calls = Mutex.new
1390     $gtk_pending_calls = []
1391     Gtk.timeout_add(50) {
1392         gtk_thread_flush
1393         true
1394     }
1395
1396     $main_window.show_all
1397 end
1398
1399
1400 handle_options
1401 Thread.abort_on_exception = true
1402 read_config
1403 Gtk.init
1404
1405
1406 create_main_window
1407 check_config
1408
1409 if ARGV[0]
1410     open_dir(ARGV[0])
1411 end
1412 Gtk.main
1413
1414 write_config