c2a17c3b5cbed3c29f4058f904bc250406e6d9de
[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 - ( $videoborder_pixbuf.width + MainView.borders_thickness) * 2
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                     end
396                 }
397                 loader.signal_connect('area-prepared') { @pixbuf_full = loader.pixbuf }
398                 file = File.new(image_path)
399                 while (chunk = file.read(65536)) != nil
400                     loader.write(chunk)
401                 end
402                 file.close
403                 loader.close
404                 if @pixbuf_full.nil?
405                     raise "Loaded pixbuf nil - #{path} #{image_path}"
406                 end
407             rescue Gdk::PixbufError
408                 msg 0, "Cannot load #{image_path}: #{$!}"
409                 return
410             ensure
411                 if @type == 'video'
412                     File.delete(image_path)
413                     Dir.rmdir(tmpdir)
414                 end
415             end
416             if @pixbuf_full
417                 if @angle.nil?
418                     if @type == 'image'
419                         @angle = guess_rotate(image_path)
420                     else
421                         @angle = 0
422                     end
423                 end
424                 if @angle != 0
425                     msg 3, ">>> load_into_pixbuf_full #{image_path} => rotate #{@angle}"
426                     @pixbuf_full = rotate_pixbuf(@pixbuf_full, @angle)
427                 end
428             end
429             if @type == 'video'
430                 cleanup_dir(dest_dir)
431             end
432         end
433     end
434
435     def to_s
436         @path
437     end
438 end
439
440 $allentries = []
441
442 class MainView < Gtk::DrawingArea
443
444     @@borders_thickness = 5
445     @@borders_length = 25
446
447     def MainView.borders_thickness
448         return @@borders_thickness
449     end
450
451     def MainView.get_usable_width(available_width)
452         return available_width - ($videoborder_pixbuf.width + @@borders_thickness) * 2
453     end
454
455     def MainView.get_usable_height(available_height)
456         return available_height - @@borders_thickness * 2
457     end
458     
459     def initialize
460         super()
461         signal_connect('expose-event') { draw }
462         signal_connect('configure-event') { update_shown; GC.start }
463         signal_connect('realize') {
464             @preloader = Thread.new {
465                 #- background preloading
466                 while true
467                     msg 3, "*** >> background main preloading triggered..."
468                     if ! @entry.nil?
469                         index = $allentries.index(@entry)
470                         w, h = window.size
471                         w = MainView.get_usable_width(w)
472                         h = MainView.get_usable_height(h)
473                         for j in 1 .. $config['preload-distance'].to_i
474                             i = index + j
475                             if i < $allentries.size
476                                 $allentries[i].pixbuf_main(w, h)
477                             end
478                             i = index - j
479                             if i >= 0
480                                 $allentries[i].pixbuf_main(w, h)
481                             end
482                             GC.start
483                             mem = get_mem
484                             if mem > $config['cache-memory-use-figure']
485                                 msg 3, "too much RSS, stopping main preloading"
486                                 break
487                             end
488                         end
489                         check_memory_free_cache_if_needed
490                     end
491                     msg 3, "*** << background main preloading stopping"
492                     Thread.stop
493                 end
494             }
495             @preloader.priority = -2
496         }
497     end
498
499     def set_shown_entry(entry)
500         if ! entry.nil? && entry == @entry
501             return
502         end
503         if ! entry.nil?
504             if ! entry.button
505                 #- not loaded yet
506                 return
507             else
508                 entry.button.grab_focus
509             end
510         end
511         @entry = entry
512         redraw        
513         @preloader.run
514     end
515
516     def get_shown_entry
517         return @entry
518     end
519
520     def show_next_entry(entry)
521         index = $allentries.index(entry) + 1
522         if index < $allentries.size
523             set_shown_entry($allentries[index])
524         end
525     end
526
527     def redraw
528         update_shown
529         w, h = window.size
530         window.begin_paint(Gdk::Rectangle.new(0, 0, w, h))
531         window.clear
532         draw
533         window.end_paint
534     end
535
536     def update_shown
537         if @entry
538             width, height = window.size 
539             usable_width = MainView.get_usable_width(width)
540             usable_height = MainView.get_usable_height(height)
541             @pixbuf = @entry.pixbuf_main(usable_width, usable_height)
542             @xpos = (width - @pixbuf.width)/2
543             @ypos = (height - @pixbuf.height)/2
544             @preloader.run
545         else
546             @pixbuf = nil
547         end
548     end
549
550     def draw
551         if @pixbuf
552             window.draw_pixbuf(nil, @pixbuf, 0, 0, @xpos, @ypos, -1, -1, Gdk::RGB::DITHER_NONE, -1, -1)
553             if @entry && @entry.type == 'video'
554                 window.draw_borders($videoborder_pixbuf, @xpos - $videoborder_pixbuf.width, @xpos + @pixbuf.width, @ypos, @ypos + @pixbuf.height)
555             end
556             if ! @entry.outline_color.nil?
557                 gc = Gdk::GC.new(window)
558                 colormap.alloc_color(@entry.outline_color, false, true)
559                 gc.set_foreground(@entry.outline_color)
560                 if @entry && @entry.type == 'video'
561                     xleft = @xpos - $videoborder_pixbuf.width
562                     xright = @xpos + @pixbuf.width + $videoborder_pixbuf.width
563                 else
564                     xleft = @xpos
565                     xright = @xpos + @pixbuf.width
566                 end
567                 window.draw_polygon(gc, true, [[xleft - @@borders_thickness, @ypos - @@borders_thickness],
568                                                [xright + @@borders_thickness, @ypos - @@borders_thickness],
569                                                [xright + @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
570                                                [xleft - @@borders_thickness, @ypos + @pixbuf.height + @@borders_thickness],
571                                                [xleft - @@borders_thickness, @ypos - 1],
572                                                [xleft - 1, @ypos - 1],
573                                                [xleft - 1, @ypos + @pixbuf.height + 1],
574                                                [xright + 1, @ypos + @pixbuf.height + 1],
575                                                [xright + 1, @ypos - 1],
576                                                [xleft - @@borders_thickness, @ypos - 1]])
577             end
578         end
579     end
580 end
581
582 def check_memory_free_cache_if_needed
583     GC.start
584     mem = get_mem
585     i = $allentries.index($mainview.get_shown_entry)
586     msg 3, "mem: #{mem} index: #{i}"
587     return if i.nil?
588     ($allentries.size - 1).downto(1) { |j|
589         if mem < $config['cache-memory-use-figure'] * 2 / 3
590             break
591         end
592         index = i + j
593         msg 3, "too much RSS, freeing full size of #{i+j} and #{i-j}..."
594         freedsomething = false
595         if i + j < $allentries.size
596             freedsomething |= $allentries[i+j].free_pixbuf_full
597         end
598         if i - j > 0
599             freedsomething |= $allentries[i-j].free_pixbuf_full
600         end
601         if freedsomething
602             GC.start
603             mem = get_mem
604             msg 3, "\tmem now: #{mem}"
605         end
606     }
607 end
608
609 def autoscroll_if_needed(button)
610     xpos_left = button.allocation.x
611     xpos_right = button.allocation.x + button.allocation.width
612     hadj = $imagesline_sw.hadjustment
613     current_minx_visible = hadj.value
614     current_maxx_visible = hadj.value + hadj.page_size
615     if xpos_left < current_minx_visible
616         #- autoscroll left
617         newval = hadj.value - (current_minx_visible - xpos_left)
618         hadj.value = newval
619         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
620     elsif xpos_right > current_maxx_visible
621         #- autoscroll right
622         newval = hadj.value + (xpos_right - current_maxx_visible)
623         if newval > hadj.upper - hadj.page_size
624             newval = hadj.upper - hadj.page_size
625         end
626         hadj.value = newval
627         button.queue_draw  #- TOREMOVE: the visual focus is displayed incorrectly
628     end
629 end
630
631 def show_popup(parent, msg, *options)
632     dialog = Gtk::Dialog.new
633     if options[0]
634         options = options[0]
635     else
636         options = {}
637     end
638     if options[:title]
639         dialog.title = options[:title]
640     else
641         dialog.title = utf8(_("Booh message"))
642     end
643     lbl = Gtk::Label.new
644     if options[:nomarkup]
645         lbl.text = msg
646     else
647         lbl.markup = msg
648     end
649     if options[:centered]
650         lbl.set_justify(Gtk::Justification::CENTER)
651     end
652     if options[:selectable]
653         lbl.selectable = true
654     end
655     if options[:topwidget]
656         dialog.vbox.add(options[0][:topwidget])
657     end
658     if options[:scrolled]
659         sw = Gtk::ScrolledWindow.new(nil, nil)
660         sw.set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC)
661         sw.add_with_viewport(lbl)
662         dialog.vbox.add(sw)
663         dialog.set_default_size(500, 600)
664     else
665         dialog.vbox.add(lbl)
666         dialog.set_default_size(200, 120)
667     end
668     if options[:bottomwidget]
669         dialog.vbox.add(options[:bottomwidget])
670     end
671     if options[:okcancel]
672         dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
673     end
674     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
675
676     if options[:pos_centered]
677         dialog.window_position = Gtk::Window::POS_CENTER
678     else
679         dialog.window_position = Gtk::Window::POS_MOUSE
680     end
681
682     if options[:linkurl]
683         linkbut = Gtk::Button.new('')
684         linkbut.child.markup = "<span foreground=\"#00000000FFFF\" underline=\"single\">#{options[0][:linkurl]}</span>"
685         linkbut.signal_connect('clicked') {
686             open_url(options[0][:linkurl] + '/index.html')
687             dialog.response(Gtk::Dialog::RESPONSE_OK)
688             set_mousecursor_normal
689         }
690         linkbut.relief = Gtk::RELIEF_NONE
691         linkbut.signal_connect('enter-notify-event') { set_mousecursor(Gdk::Cursor::HAND2, linkbut); false }
692         linkbut.signal_connect('leave-notify-event') { set_mousecursor(nil, linkbut); false }
693         dialog.vbox.add(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(linkbut))
694     end
695
696     dialog.show_all
697
698     if options[:stuff_connector]
699         options[:stuff_connector].call({ :dialog => dialog })
700     end
701                                         
702     if !options[:not_transient]
703         dialog.transient_for = parent
704         dialog.run { |response|
705             if options[:data_getter]
706                 options[:data_getter].call
707             end
708             dialog.destroy
709             if options[:okcancel]
710                 return response == Gtk::Dialog::RESPONSE_OK
711             end
712         }
713     else
714         dialog.signal_connect('response') { dialog.destroy }
715     end
716 end
717
718 def video_view(entry)
719     cmd = from_utf8($config['video-viewer']).gsub('%f', "'#{entry.path}'") + ' &'
720     msg 2, cmd
721     system(cmd)
722 end
723
724 def thumbnail_keypressed(entry, event)
725     if event.state & Gdk::Window::MOD1_MASK != 0
726         #- ALT pressed: Alt-Left and Alft-Right rotate
727         if event.keyval == Gdk::Keyval::GDK_Left || event.keyval == Gdk::Keyval::GDK_Right
728             if event.keyval == Gdk::Keyval::GDK_Left
729                 entry.angle = (entry.angle - 90) % 360
730             else
731                 entry.angle = (entry.angle + 90) % 360
732             end
733             entry.free_pixbuf_full
734             entry.free_pixbuf_main
735             entry.free_pixbuf_thumbnail
736             $mainview.redraw
737             entry.image.pixbuf = entry.pixbuf_thumbnail
738             if $config['rotate-set-exif'] == 'true'
739                 Exif.set_orientation(entry.path, angle_to_exif_orientation(entry.angle))
740             end
741         end
742
743     elsif event.state & Gdk::Window::CONTROL_MASK != 0
744         #- CONTROL pressed: Ctrl-z and Ctrl-r for undo/redo
745         if event.keyval == Gdk::Keyval::GDK_z
746             perform_undo
747         end
748         if event.keyval == Gdk::Keyval::GDK_r
749             perform_redo
750         end
751
752     else
753         removed_before = entry.removed
754         label_before = entry.labeled
755
756         if event.keyval == Gdk::Keyval::GDK_Delete
757             entry.removed = true
758             entry.labeled = nil
759             entry.show_bg
760             $mainview.show_next_entry(entry)
761             update_visibility(entry)
762
763             save_undo(_("set for removal"),
764                       proc {
765                           entry.removed = removed_before
766                           entry.labeled = label_before
767                           entry.show_bg
768                           update_visibility(entry)
769                           if entry.button.visible?
770                               $mainview.set_shown_entry(entry)
771                           end
772                           proc {
773                               entry.removed = true
774                               entry.labeled = nil
775                               entry.show_bg
776                               update_visibility(entry)
777                               if entry.button.visible?
778                                   $mainview.set_shown_entry(entry)
779                               end
780                           }
781                       })
782
783         elsif event.keyval == Gdk::Keyval::GDK_space
784             if entry.labeled
785                 msg = _("Cleared label")
786             elsif entry.removed
787                 msg = _("Cleared set for removal")
788             end
789             entry.removed = false
790             entry.labeled = nil
791             entry.show_bg
792             $mainview.show_next_entry(entry)
793
794             save_undo(msg,
795                       proc {
796                           entry.removed = removed_before
797                           entry.labeled = label_before
798                           entry.show_bg
799                           $mainview.set_shown_entry(entry)
800                           proc {
801                               entry.removed = false
802                               entry.labeled = nil
803                               entry.show_bg
804                               $mainview.set_shown_entry(entry)
805                           }
806                       })
807
808         elsif event.keyval == Gdk::Keyval::GDK_Return && entry.type == 'video'
809             video_view(entry)
810
811         else
812             char = [ Gdk::Keyval.to_unicode(event.keyval) ].pack("C*")
813             if char =~ /^[a-zA-z0-9]$/
814                 label = $labels[char]
815                 
816                 if label.nil?
817                     vb = Gtk::VBox.new(false, 0)
818                     vb.pack_start(entry = Gtk::Entry.new.set_text(char), false, false)
819                     vb.pack_start(Gtk::Alignment.new(0.5, 0.5, 0, 0).add(bt = Gtk::ColorButton.new))
820                     color = bt.color = Gdk::Color.new(16384 + rand(49151), 16384 + rand(49151), 16384 + rand(49151))
821                     bt.signal_connect('color-set') { color = bt.color }
822                     text = nil
823                     entry.signal_connect('changed') {  #- cannot add a new label with first letter of an existing label
824                         while $labels.has_key?(entry.text[0,1])
825                             entry.text = entry.text.sub(/./, '')
826                         end
827                     }
828                     if show_popup($main_window,
829                                   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,
830                                   { :okcancel => true, :bottomwidget => vb, :data_getter => proc { text = entry.text },
831                                     :stuff_connector => proc { |stuff| entry.select_region(0, 0)
832                                                                        entry.position = -1
833                                                                        entry.signal_connect('activate') { stuff[:dialog].response(Gtk::Dialog::RESPONSE_OK) } } } )
834                         if text.length > 0
835                             char = text[0,1]  #- in case it changed
836                             label = Label.new(text)
837                             label.color = color
838                             $labels[char] = label
839                             lbl = Gtk::Label.new.set_markup('<b>(' + char + ')</b>' + text[1..-1]).set_justify(Gtk::Justification::CENTER)
840                             $labels_vbox.pack_start(label.button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
841                             label.button.active = true
842                             label.button.signal_connect('toggled') { update_all_visibilities }
843                             evt.modify_bg(Gtk::StateType::NORMAL, label.color)
844                             evt.modify_bg(Gtk::StateType::PRELIGHT, label.color.lighter.lighter)
845                             evt.modify_bg(Gtk::StateType::ACTIVE, label.color.lighter)
846                         end
847                     end
848
849                 else
850                     entry.removed = false
851                     entry.labeled = label
852                     entry.show_bg
853                     $mainview.show_next_entry(entry)
854                     update_visibility(entry)
855
856                     save_undo(_("set label"),
857                               proc {
858                                   entry.removed = removed_before
859                                   entry.labeled = label_before
860                                   entry.show_bg
861                                   update_visibility(entry)
862                                   if entry.button.visible?
863                                       $mainview.set_shown_entry(entry)
864                                   end
865                                   proc {
866                                       entry.removed = false
867                                       entry.labeled = label
868                                       entry.show_bg
869                                       update_visibility(entry)
870                                       if entry.button.visible?
871                                           $mainview.set_shown_entry(entry)
872                                       end
873                                   }
874                               })
875                 end
876             end
877         end
878     end
879 end
880
881 def sb_msg(msg)
882     $statusbar.pop(0)
883     if msg
884         $statusbar.push(0, utf8(msg))
885     end
886 end
887
888 def real_show_entry(entry, tooltips, grab_focus)
889     #- for scoping the actual reference to 'entry'
890     gtk_thread_protect(proc {
891         msg 3, "using entry #{entry}"
892         entry.image = Gtk::Image.new(entry.pixbuf_thumbnail)
893         if entry.type == 'video'
894             entry.button = Gtk::Button.new.add(Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
895                                                              pack_start(entry.image).
896                                                              pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false))
897             da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
898             da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
899         else
900             entry.button = Gtk::Button.new.set_image(entry.image)
901         end
902         tooltips.set_tip(entry.button, entry.get_beautified_name, nil)
903         $imagesline.pack_start(entry.alignment = Gtk::Alignment.new(0.5, 1, 0, 0).add(entry.button).show_all, false, false)
904         entry.button.signal_connect('clicked') {
905             if (last_shown = $mainview.get_shown_entry) != entry
906                 $mainview.set_shown_entry(entry)
907                 entry.alignment.set(0.5, 0, 0, 0)
908                 sb_msg(_("Selected %s") % entry.get_beautified_name)
909                 last_shown.nil? or last_shown.alignment.set(0.5, 1, 0, 0)
910             end
911         }
912         entry.button.signal_connect('button-press-event') { |w, event|
913             if entry.type == 'video' && event.event_type == Gdk::Event::BUTTON2_PRESS
914                 video_view(entry)
915             end
916         }
917         entry.button.signal_connect('focus-in-event') { entry.button.clicked; autoscroll_if_needed(entry.button) }
918         entry.button.signal_connect('key-press-event') { |w, e| thumbnail_keypressed(entry, e) }
919         if grab_focus
920             entry.button.grab_focus
921         end
922         update_visibility(entry)
923     })
924 end
925
926 def show_entries
927     $images_loader = Thread.new {
928         t1 = Time.now
929         sb_msg(_("Loading images..."))
930         tooltips = Gtk::Tooltips.new
931         counter = 0
932         toremove = []
933         grab_focus = true
934         i = 0
935         total_size = 0
936         while i < $allentries.size
937             entry = $allentries[i]
938             if entry.pixbuf_full
939                 total_size += file_size(entry.path)
940                 entry.pixbuf_thumbnail
941                 real_show_entry(entry, tooltips, grab_focus)
942                 grab_focus = false
943                 if i % 4 == 0
944                     check_memory_free_cache_if_needed
945                 end
946                 counter += 1
947                 i = i + 1
948
949             else
950                 $allentries.delete_at(i)
951             end
952         end
953         check_memory_free_cache_if_needed
954         sb_msg(_("%d images of total %s kB loaded in %3.2f seconds.") % [ counter, commify(total_size / 1024), Time.now - t1 ])
955     }
956     $images_loader.priority = -1
957 end
958
959 def reset_all
960     $images_loader and $images_loader.kill
961     reset_labels
962     reset_thumbnails
963     $mainview.set_shown_entry(nil)
964     sb_msg(nil)
965 end
966
967 def open_dir(path)
968     #- remove visual stuff, so that user will see something is happening
969     reset_all
970     sb_msg(_("Scanning source directory..."))
971
972     path = File.expand_path(path.sub(%r|/$|, ''))
973     examined_dirs = `find '#{path}' -type d -follow`.sort.collect { |v| v.chomp }
974     #- validate first
975     examined_dirs.each { |dir|
976         if dir =~ /'/
977             return utf8(_("Source directory or sub-directories can't contain a single-quote character, sorry: %s") % dir)
978         end
979         Dir.entries(dir).each { |file|
980             if file =~ /['"\[\]]/
981                 return utf8(_("Files can't contain any of the characters ', \", [ or ], sorry: %s") % "#{dir}/#{file}")
982             end
983         }
984     }
985
986     #- scan for populate second
987     examined_dirs.each { |dir|
988         if File.basename(dir) =~ /^\./
989             msg 1, _("Ignoring directory %s, begins with a dot (indicating a hidden directory)") % dir
990             next
991         end
992         entries = Dir.entries(dir)
993         if $sort_by_exif_date
994             dates = {}
995             entries.each { |file|
996                 date_time = Exif.datetimeoriginal(File.join(dir, file))
997                 if ! date_time.nil?
998                     dates[file] = date_time
999                 end
1000             }
1001             entries = smartsort(entries, dates)
1002         else
1003             entries.sort!
1004         end
1005         entries.each { |file|
1006             type = entry2type(file)
1007             if type
1008                 $allentries << Entry.new(File.join(dir, file), type)
1009             end
1010         }
1011     }
1012     $workingdir = path
1013     show_entries
1014     $execute.sensitive = true
1015     return nil
1016 end
1017
1018 def open_dir_popup
1019     fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory to work with")),
1020                                     nil,
1021                                     Gtk::FileChooser::ACTION_SELECT_FOLDER,
1022                                     nil,
1023                                     [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1024     fc.transient_for = $main_window
1025     if $workingdir
1026         fc.current_folder = $workingdir
1027     end
1028     ok = false
1029     while !ok
1030         if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1031             msg = open_dir(fc.filename)
1032             if msg
1033                 show_popup(fc, msg)
1034                 ok = false
1035             else
1036                 ok = true
1037             end
1038         else
1039             ok = true
1040         end
1041     end
1042     fc.destroy
1043 end
1044
1045 def gtk_thread_protect(proc, *params)
1046     if Thread.current == Thread.main
1047         proc.call(*params)
1048     else
1049         $protect_gtk_pending_calls.synchronize {
1050             $gtk_pending_calls << [ proc, params ]
1051         }
1052     end
1053 end
1054
1055 def gtk_thread_flush
1056     $protect_gtk_pending_calls.synchronize {
1057         if $gtk_pending_calls.size > 0
1058             elem = $gtk_pending_calls.shift
1059             elem[0].call(*elem[1])
1060         end
1061     }
1062 end
1063
1064 def try_quit(*options)
1065     Gtk.main_quit
1066 end
1067
1068 def execute
1069     dialog = Gtk::Dialog.new
1070     dialog.title = utf8(_("Booh message"))
1071
1072     vb1 = Gtk::VBox.new(false, 5)
1073     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!")))
1074     vb1.pack_start(label, false, false)
1075
1076     table = Gtk::Table.new(0, 0, false)
1077     table.set_row_spacings(5)
1078     table.set_column_spacings(5)
1079     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)
1080     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)
1081     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)
1082     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)
1083     add_row = proc { |row, name, color, truthproc, normal|
1084         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)),
1085                      0, 1, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1086         counter = 0
1087         examples = Gtk::HBox.new(false, 5)
1088         $allentries.each { |entry|
1089             if truthproc.call(entry)
1090                 counter += 1
1091                 if counter < 4
1092                     thumbnail = Gtk::Image.new(entry.pixbuf_thumbnail)
1093                     if entry.type == 'video'
1094                         thumbnail = Gtk::HBox.new.pack_start(da1 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false).
1095                                                   pack_start(thumbnail).
1096                                                   pack_start(da2 = Gtk::DrawingArea.new.set_size_request($videoborder_pixbuf.width, -1), false, false)
1097                         da1.signal_connect('realize') { da1.window.set_back_pixmap($videoborder_pixmap, false) }
1098                         da2.signal_connect('realize') { da2.window.set_back_pixmap($videoborder_pixmap, false) }
1099                     end
1100                     examples.pack_start(thumbnail, false, false)
1101                 elsif counter == 4
1102                     examples.pack_start(Gtk::Label.new.set_markup("<b>...</b>"), false, false)
1103                 end
1104             end
1105         }
1106         table.attach(Gtk::Label.new(counter.to_s).set_justify(Gtk::Justification::CENTER), 1, 2, row, row + 1, 0, 0, 5, 5)
1107         table.attach(examples, 2, 3, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1108
1109         combostore = Gtk::ListStore.new(Gdk::Pixbuf, String)
1110         iter = combostore.append
1111         if normal
1112             iter[0] = $main_window.render_icon(Gtk::Stock::GO_FORWARD, Gtk::IconSize::MENU)
1113             iter[1] = utf8(_("Move to:"))
1114             iter = combostore.append
1115             iter[0] = $main_window.render_icon(Gtk::Stock::PASTE, Gtk::IconSize::MENU)
1116             iter[1] = utf8(_("Copy to:"))
1117         else
1118             iter[0] = $main_window.render_icon(Gtk::Stock::DELETE, Gtk::IconSize::MENU)
1119             iter[1] = utf8(_("Permanently remove"))
1120         end
1121         iter = combostore.append
1122         iter[0] = $main_window.render_icon(Gtk::Stock::MEDIA_STOP, Gtk::IconSize::MENU)
1123         iter[1] = utf8(_("Do nothing"))
1124         combo = Gtk::ComboBox.new(combostore)
1125         combo.active = 0
1126         renderer = Gtk::CellRendererPixbuf.new
1127         combo.pack_start(renderer, false)
1128         combo.set_attributes(renderer, :pixbuf => 0)
1129         renderer = Gtk::CellRendererText.new
1130         combo.pack_start(renderer, true)
1131         combo.set_attributes(renderer, :text => 1)
1132
1133         if normal
1134             pathbutton = Gtk::Button.new.add(pathlabel = Gtk::Label.new.set_markup(utf8(_("<i>(unset)</i>"))))
1135             lastpath = $workingdir
1136             pathbutton.signal_connect('clicked') {
1137                 fc = Gtk::FileChooserDialog.new(utf8(_("Specify the directory where to move the pictures to")),
1138                                                 nil,
1139                                                 Gtk::FileChooser::ACTION_SELECT_FOLDER,
1140                                                 nil,
1141                                                 [Gtk::Stock::OPEN, Gtk::Dialog::RESPONSE_ACCEPT], [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1142                 fc.transient_for = dialog
1143                 fc.current_folder = lastpath
1144                 if fc.run == Gtk::Dialog::RESPONSE_ACCEPT
1145                     pathlabel.text = fc.filename
1146                 end
1147                 lastpath = fc.filename
1148                 fc.destroy
1149             }
1150             combo.signal_connect('changed') {
1151                 pathbutton.sensitive = combo.active <= 1
1152             }
1153             vb = Gtk::VBox.new(false, 5)
1154             vb.pack_start(combo, false, false)
1155             vb.pack_start(pathbutton, false, false)
1156             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(vb), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1157             { :combo => combo, :pathlabel => pathlabel }
1158         else
1159             table.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(combo), 3, 4, row, row + 1, Gtk::FILL, Gtk::FILL, 5, 5)
1160             { :combo => combo }
1161         end
1162     }
1163     stuff = {}
1164     stuff['toremove'] = add_row.call(1, utf8(_("<i>to remove</i>")), $color_red, proc { |entry| entry.removed }, false)
1165     $labels.values.each_with_index { |label, row| stuff[label] = add_row.call(row + 2, label.name, label.color, proc { |entry| entry.labeled == label }, true) }
1166     vb1.pack_start(sw = Gtk::ScrolledWindow.new(nil, nil).add_with_viewport(table).set_policy(Gtk::POLICY_AUTOMATIC, Gtk::POLICY_AUTOMATIC), true, true)
1167
1168     toremove_amount = $allentries.find_all { |entry| entry.removed }.size
1169     toremove_size = commify($allentries.find_all { |entry| entry.removed }.collect { |entry| file_size(entry.path) }.sum / 1024)
1170     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 ]))
1171     if toremove_amount > 0
1172         vb1.pack_start(check_removal, false, false)
1173         stuff['toremove'][:combo].signal_connect('changed') { |widget|
1174             check_removal.sensitive = widget.active == 0
1175         }
1176     end
1177
1178     dialog.vbox.add(vb1)
1179
1180     dialog.set_default_size(800, 600)
1181     dialog.add_button(Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL)
1182     dialog.add_button(Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK)
1183     dialog.window_position = Gtk::Window::POS_MOUSE
1184     dialog.transient_for = $main_window
1185
1186     dialog.show_all
1187
1188     while true
1189         dialog.run { |response|        
1190             if response == Gtk::Dialog::RESPONSE_OK
1191                 if toremove_amount > 0 && ! check_removal.active? && stuff['toremove'][:combo].active == 0
1192                     show_popup(dialog, utf8(_("You have not confirmed that you noticed the permanent removal of the pictures marked for deletion.")))
1193                     break
1194                 end
1195                 problem = false
1196                 label2entries = {}
1197                 $labels.values.each { |label| label2entries[label] = [] }
1198                 $allentries.each { |entry| entry.labeled and label2entries[entry.labeled] << entry }
1199                 stuff.keys.each { |key|
1200                     if key.is_a?(Label) && stuff[key][:combo].active <= 1
1201                         destination = stuff[key][:pathlabel].text
1202                         if destination[0] != ?/
1203                             show_popup(dialog, utf8(_("You have not selected a directory where to move/copy %s.") % key.name))
1204                             problem = true
1205                             break
1206                         end
1207                         begin
1208                             Dir.mkdir(destination)
1209                         rescue Errno::EEXIST
1210                         end
1211                         begin
1212                             st = File.stat(destination)
1213                         rescue
1214                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not createable.") % [destination, key.name]))
1215                             problem = true
1216                             break
1217                         end
1218                         if ! st.directory? || ! st.writable?
1219                             show_popup(dialog, utf8(_("Directory %s, where to move/copy %s, is not valid or not writable.") % [destination, key.name]))
1220                             problem = true
1221                             break
1222                         end
1223                         label2entries[key].each { |entry|
1224                             begin
1225                                 File.stat(File.join(destination, File.basename(entry.path)))
1226                                 show_popup(dialog, utf8(_("Sorry, a file '%s' already exists in directory '%s'.") % [ File.basename(entry.path), destination ]))
1227                                 problem = true
1228                                 break
1229                             rescue
1230                             end
1231                         }
1232                         if problem
1233                             break
1234                         end
1235                     end
1236                 }
1237                 if ! problem
1238                     begin
1239                         moved = 0
1240                         copied = 0
1241                         stuff.keys.each { |key|
1242                             if key.is_a?(Label) && stuff[key][:combo].active <= 1
1243                                 destination = stuff[key][:pathlabel].text
1244                                 label2entries[key].each { |entry|
1245                                     if stuff[key][:combo].active == 0
1246                                         File.rename(entry.path, File.join(destination, File.basename(entry.path)))
1247                                         moved += 1
1248                                     elsif stuff[key][:combo].active == 1
1249                                         system("cp -dp '#{entry.path}' '#{destination}'")
1250                                         copied += 1
1251                                     end
1252                                 }
1253                             end
1254                         }
1255                         removed = 0
1256                         if stuff['toremove'][:combo].active == 0
1257                             $allentries.each { |entry|
1258                                 if entry.removed
1259                                     File.delete(entry.path)
1260                                     removed += 1
1261                                 end
1262                             }
1263                         end
1264                     rescue
1265                         msg 1, "woops: #{$!}"
1266                         show_popup(dialog, utf8(_("Unexpected system call error: '%s'.") % $!))
1267                     end
1268                     show_popup(dialog, utf8(_("Successfully moved %d files, copied %d file, and removed %d files.") % [ moved, copied, removed ]))
1269                     dialog.destroy
1270                     reset_all
1271                     return
1272                 end
1273
1274             else
1275                 dialog.destroy
1276                 return
1277             end
1278         }
1279     end
1280 end
1281
1282 def update_visibility(entry)
1283     if ! entry.button
1284         #- not yet loaded
1285         return
1286     end
1287     if entry.labeled
1288         if entry.labeled.button.active?
1289             entry.button.show
1290         else
1291             entry.button.hide
1292         end
1293     elsif entry.removed
1294         if $toremove_button.active?
1295             entry.button.show
1296         else
1297             entry.button.hide
1298         end
1299     else
1300         if $unlabelled_button.active?
1301             entry.button.show
1302         else
1303             entry.button.hide
1304         end
1305     end
1306 end
1307         
1308 def update_all_visibilities
1309     $allentries.each { |entry|
1310         update_visibility(entry)
1311     }
1312     shown = $mainview.get_shown_entry
1313     if shown.nil?
1314         return
1315     end
1316     while shown.button && ! shown.button.visible? && shown != $allentries.last
1317         shown = $allentries[$allentries.index(shown) + 1]
1318     end 
1319     if shown.button && shown.button.visible?
1320         shown.button.grab_focus
1321         return
1322     end
1323     $allentries.reverse.each { |entry|
1324         if entry.button && entry.button.visible?
1325             entry.button.grab_focus
1326             return
1327         end
1328     }
1329 end
1330
1331 def preferences
1332     dialog = Gtk::Dialog.new(utf8(_("Edit preferences")),
1333                              $main_window,
1334                              Gtk::Dialog::MODAL | Gtk::Dialog::DESTROY_WITH_PARENT,
1335                              [Gtk::Stock::OK, Gtk::Dialog::RESPONSE_OK],
1336                              [Gtk::Stock::CANCEL, Gtk::Dialog::RESPONSE_CANCEL])
1337
1338     tooltips = Gtk::Tooltips.new
1339     
1340     dialog.vbox.add(tbl = Gtk::Table.new(0, 0, false))
1341     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Command for watching videos: ")))),
1342                0, 1, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1343     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(video_viewer_entry = Gtk::Entry.new.set_text($config['video-viewer']).set_size_request(250, -1)),
1344                1, 2, 0, 1, Gtk::FILL, Gtk::SHRINK, 2, 2)
1345     tooltips.set_tip(video_viewer_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mplayer %f")), nil)
1346
1347     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Browser's command: ")))),
1348                0, 1, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1349     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(browser_entry = Gtk::Entry.new.set_text($config['browser'])),
1350                1, 2, 1, 2, Gtk::FILL, Gtk::SHRINK, 2, 2)
1351     tooltips.set_tip(browser_entry, utf8(_("Use %f to specify the filename;\nfor example: /usr/bin/mozilla-firefox -remote 'openURL(%f,new-window)' || /usr/bin/mozilla-firefox %f")), nil)
1352
1353     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Preloading distance: ")))),
1354                0, 1, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1355     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(preload_distance = Gtk::SpinButton.new(0, 50, 1).set_value($config['preload-distance'].to_i)),
1356                1, 2, 2, 3, Gtk::FILL, Gtk::SHRINK, 2, 2)
1357     tooltips.set_tip(preload_distance, utf8(_("Amount of pictures preloaded left and right to the currently shown")), nil)
1358
1359     tbl.attach(Gtk::Alignment.new(1, 0.5, 0, 0).add(Gtk::Label.new.set_markup(utf8(_("Cache memory use: ")))),
1360                0, 1, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1361     tbl.attach(Gtk::Alignment.new(0, 0.5, 1, 0).add(cache_vbox = Gtk::VBox.new(false, 0)),
1362                1, 2, 3, 4, Gtk::FILL, Gtk::SHRINK, 2, 2)
1363     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_memfree_radio = Gtk::RadioButton.new(''), false, false).
1364                                                   pack_start(cache_memfree_spin = Gtk::SpinButton.new(0, 100, 10), false, false).
1365                                                   pack_start(cache_memfree_label = Gtk::Label.new(utf8(_("% of free memory"))), false, false), false, false)
1366     cache_memfree_spin.signal_connect('value-changed') { cache_memfree_radio.active = true }
1367     tooltips.set_tip(cache_memfree_spin, utf8(_("Percentage of free memory (+ buffers/cache) measured at startup")), nil)
1368     cache_vbox.pack_start(Gtk::HBox.new(false, 0).pack_start(cache_specify_radio = Gtk::RadioButton.new(cache_memfree_radio, ''), false, false).
1369                                                   pack_start(cache_specify_spin = Gtk::SpinButton.new(0, 4000, 50), false, false).
1370                                                   pack_start(cache_specify_label = Gtk::Label.new(utf8(_("MB"))).set_sensitive(false), false, false), false, false)
1371     cache_specify_spin.signal_connect('value-changed') { cache_specify_radio.active = true }
1372     cache_memfree_radio.signal_connect('toggled') {
1373         if cache_memfree_radio.active?
1374             cache_memfree_label.sensitive = true
1375             cache_specify_label.sensitive = false
1376         else
1377             cache_specify_label.sensitive = true
1378             cache_memfree_label.sensitive = false
1379         end
1380     }
1381     tooltips.set_tip(cache_specify_spin, utf8(_("Amount of memory in megabytes")), nil)
1382     if $config['cache-memory-use'] =~ /memfree_(\d+)/
1383         cache_memfree_spin.value = $1.to_i
1384     else
1385         cache_specify_spin.value = $config['cache-memory-use'].to_i
1386     end
1387
1388     tbl.attach(update_exif_orientation_check = Gtk::CheckButton.new(utf8(_("Update file's EXIF orientation when rotating a picture"))),
1389                0, 2, 4, 5, Gtk::FILL, Gtk::SHRINK, 2, 2)
1390     tooltips.set_tip(update_exif_orientation_check, utf8(_("When rotating a picture (Alt-Right/Left), also update EXIF orientation in the file itself")), nil)
1391     update_exif_orientation_check.active = $config['rotate-set-exif'] == 'true'
1392
1393     dialog.vbox.show_all
1394     dialog.run { |response|
1395         if response == Gtk::Dialog::RESPONSE_OK
1396             $config['video-viewer'] = from_utf8(video_viewer_entry.text)
1397             $config['browser'] = from_utf8(browser_entry.text)
1398             $config['preload-distance'] = preload_distance.value
1399             $config['rotate-set-exif'] = update_exif_orientation_check.active?.to_s
1400             if cache_memfree_radio.active?
1401                 $config['cache-memory-use'] = "memfree_#{cache_memfree_spin.value}%"
1402             else
1403                 $config['cache-memory-use'] = cache_specify_spin.value
1404             end
1405             set_cache_memory_use_figure
1406         end
1407     }
1408     dialog.destroy
1409 end
1410
1411 def perform_undo
1412     if $undo_mb.sensitive?
1413         $redo_mb.sensitive = true
1414         if not more_undoes = UndoHandler.undo($statusbar)
1415             $undo_mb.sensitive = false
1416         end
1417     end
1418 end
1419
1420 def perform_redo
1421     if $redo_mb.sensitive?
1422         $undo_mb.sensitive = true
1423         if not more_redoes = UndoHandler.redo($statusbar)
1424             $redo_mb.sensitive = false
1425         end
1426     end
1427 end
1428
1429 def create_menubar    
1430     #- menu
1431     mb = Gtk::MenuBar.new
1432
1433     filemenu = Gtk::MenuItem.new(utf8(_("_File")))
1434     filesubmenu = Gtk::Menu.new
1435     filesubmenu.append(open      = Gtk::ImageMenuItem.new(Gtk::Stock::OPEN))
1436     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1437     filesubmenu.append($execute  = Gtk::ImageMenuItem.new(Gtk::Stock::EXECUTE).set_sensitive(false))
1438     filesubmenu.append(            Gtk::SeparatorMenuItem.new)
1439     filesubmenu.append(quit      = Gtk::ImageMenuItem.new(Gtk::Stock::QUIT))
1440     filemenu.set_submenu(filesubmenu)
1441     mb.append(filemenu)
1442
1443     open.signal_connect('activate') { open_dir_popup }
1444     $execute.signal_connect('activate') { execute }
1445     quit.signal_connect('activate') { try_quit }
1446
1447     editmenu = Gtk::MenuItem.new(utf8(_("_Edit")))
1448     editsubmenu = Gtk::Menu.new
1449     editsubmenu.append($undo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::UNDO).set_sensitive(false))
1450     editsubmenu.append($redo_mb    = Gtk::ImageMenuItem.new(Gtk::Stock::REDO).set_sensitive(false))
1451     editsubmenu.append(              Gtk::SeparatorMenuItem.new)
1452     editsubmenu.append(prefs       = Gtk::ImageMenuItem.new(Gtk::Stock::PREFERENCES))
1453     editmenu.set_submenu(editsubmenu)
1454     mb.append(editmenu)
1455
1456     $undo_mb.signal_connect('activate') { perform_undo }
1457     $redo_mb.signal_connect('activate') { perform_redo }
1458     prefs.signal_connect('activate') { preferences }
1459     
1460     helpmenu = Gtk::MenuItem.new(utf8(_("_Help")))
1461     helpsubmenu = Gtk::Menu.new
1462     helpsubmenu.append(tutos = Gtk::ImageMenuItem.new(utf8(_("Online tutorials (opens a web-browser)"))))
1463     tutos.image = Gtk::Image.new("#{$FPATH}/images/stock-web-16.png")
1464     helpsubmenu.append(Gtk::SeparatorMenuItem.new)
1465     helpsubmenu.append(about = Gtk::ImageMenuItem.new(Gtk::Stock::ABOUT))
1466     helpmenu.set_submenu(helpsubmenu)
1467     mb.append(helpmenu)
1468
1469     tutos.signal_connect('activate') { open_url('http://booh.org/tutorial.html') }
1470     about.signal_connect('activate') { call_about }
1471
1472
1473     #- no toolbar, to save height
1474
1475     return mb
1476 end
1477
1478 def reset_labels
1479     for child in $labels_vbox.children
1480         $labels_vbox.remove(child)
1481     end
1482     $labels_vbox.pack_start(Gtk::Label.new(utf8(_("Labels list:"))).set_justify(Gtk::Justification::CENTER), false, false).show_all
1483     $labels = {}
1484     lbl = Gtk::Label.new.set_markup(utf8(_("<i>unlabelled</i>")))
1485     $labels_vbox.pack_start($unlabelled_button = Gtk::CheckButton.new.add(Gtk::EventBox.new.add(lbl)).show_all)
1486     $unlabelled_button.active = true
1487     $unlabelled_button.signal_connect('toggled') { update_all_visibilities }
1488     lbl = Gtk::Label.new.set_markup(utf8(_("<i>to remove</i>")))
1489     $labels_vbox.pack_start($toremove_button = Gtk::CheckButton.new.add(evt = Gtk::EventBox.new.add(lbl)).show_all)
1490     $toremove_button.active = true
1491     $toremove_button.signal_connect('toggled') { update_all_visibilities }
1492     evt.modify_bg(Gtk::StateType::NORMAL, $color_red)
1493     evt.modify_bg(Gtk::StateType::PRELIGHT, $color_red.lighter.lighter)
1494     evt.modify_bg(Gtk::StateType::ACTIVE, $color_red.lighter)
1495 end
1496
1497 def reset_thumbnails
1498     $allentries = []
1499     for child in $imagesline.children
1500         $imagesline.remove(child)
1501     end
1502 end
1503
1504 def create_main_window
1505
1506     $videoborder_pixbuf = Gdk::Pixbuf.new("#{$FPATH}/images/video_border.png")
1507     $videoborder_pixmap, = $videoborder_pixbuf.render_pixmap_and_mask(0)
1508
1509     mb = create_menubar
1510
1511     main_vbox = Gtk::VBox.new(false, 0)
1512     main_vbox.pack_start(mb, false, false)
1513     mainview_hbox = Gtk::HBox.new
1514     mainview_hbox.pack_start(Gtk::Alignment.new(0.5, 0, 0, 0).add($labels_vbox = Gtk::VBox.new(false, 5)), false, true)
1515     reset_labels
1516     mainview_hbox.pack_start($mainview = MainView.new, true, true)
1517     main_vbox.pack_start(mainview_hbox, true, true)
1518     $imagesline_sw = Gtk::ScrolledWindow.new(nil, nil)
1519     $imagesline_sw.set_policy(Gtk::POLICY_ALWAYS, Gtk::POLICY_NEVER)
1520     $imagesline_sw.add_with_viewport($imagesline = Gtk::HBox.new(false, 0).show)
1521     main_vbox.pack_start($imagesline_sw, false, false)
1522     main_vbox.pack_end($statusbar = Gtk::Statusbar.new, false, false)
1523
1524     $imagesline.set_size_request(-1, Gtk::Button.new.size_request[1] + Entry.thumbnails_height + 15)
1525
1526     $main_window = Gtk::Window.new
1527     $main_window.add(main_vbox)
1528     $main_window.signal_connect('delete-event') {
1529         try_quit({ :disallow_cancel => true })
1530     }
1531
1532     #- read/save size and position of window
1533     if $config['pos-x'] && $config['pos-y']
1534         $main_window.move($config['pos-x'].to_i, $config['pos-y'].to_i)
1535     else
1536         $main_window.window_position = Gtk::Window::POS_CENTER
1537     end
1538     msg 3, "size: #{$config['width']}x#{$config['height']}"
1539     $main_window.set_default_size(($config['width'] || 700).to_i, ($config['height'] || 600).to_i)
1540     $main_window.signal_connect('configure-event') {
1541         msg 3, "configure: pos: #{$main_window.window.root_origin.inspect} size: #{$main_window.window.size.inspect}"
1542         x, y = $main_window.window.root_origin
1543         width, height = $main_window.window.size
1544         $config['pos-x'] = x
1545         $config['pos-y'] = y
1546         $config['width'] = width
1547         $config['height'] = height
1548         false
1549     }
1550
1551     $protect_gtk_pending_calls = Mutex.new
1552     $gtk_pending_calls = []
1553     Gtk.timeout_add(50) {
1554         gtk_thread_flush
1555         true
1556     }
1557
1558     $main_window.show_all
1559 end
1560
1561
1562 handle_options
1563 Thread.abort_on_exception = true
1564 read_config
1565 Gtk.init
1566
1567
1568 create_main_window
1569 check_config
1570
1571 if ARGV[0]
1572     open_dir(ARGV[0])
1573 end
1574 Gtk.main
1575
1576 write_config