Implements PXEGeek's http://wiki.synfig.com/Wish_list entry: "Optionally display...
[synfig.git] / synfig-studio / trunk / src / gtkmm / keyframetreestore.cpp
1 /* === S Y N F I G ========================================================= */
2 /*!     \file keyframetreestore.cpp
3 **      \brief Template File
4 **
5 **      $Id$
6 **
7 **      \legal
8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 **
10 **      This package is free software; you can redistribute it and/or
11 **      modify it under the terms of the GNU General Public License as
12 **      published by the Free Software Foundation; either version 2 of
13 **      the License, or (at your option) any later version.
14 **
15 **      This package is distributed in the hope that it will be useful,
16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 **      General Public License for more details.
19 **      \endlegal
20 */
21 /* ========================================================================= */
22
23 /* === H E A D E R S ======================================================= */
24
25 #ifdef USING_PCH
26 #       include "pch.h"
27 #else
28 #ifdef HAVE_CONFIG_H
29 #       include <config.h>
30 #endif
31
32 #include "keyframetreestore.h"
33 #include <synfig/valuenode.h>
34 #include "iconcontroler.h"
35 #include <synfig/valuenode_timedswap.h>
36 #include <gtkmm/button.h>
37 #include <gtkmm/treerowreference.h>
38 #include <synfig/canvas.h>
39 #include <synfig/keyframe.h>
40 #include <time.h>
41 #include <cstdlib>
42 #include <ETL/smart_ptr>
43 #include <synfigapp/action.h>
44 #include <synfigapp/instance.h>
45 #include "onemoment.h"
46 #include <synfig/exception.h>
47
48 #endif
49
50 /* === U S I N G =========================================================== */
51
52 using namespace std;
53 using namespace etl;
54 using namespace synfig;
55 using namespace studio;
56
57 /* === M A C R O S ========================================================= */
58
59 /* === G L O B A L S ======================================================= */
60
61 KeyframeTreeStore_Class KeyframeTreeStore::keyframe_tree_store_class_;
62
63 /* === C L A S S E S & S T R U C T S ======================================= */
64
65 struct _keyframe_iterator
66 {
67         synfig::KeyframeList::iterator iter;
68         int ref_count;
69         int index;
70 };
71
72 /*
73 Gtk::TreeModel::iterator keyframe_iter_2_model_iter(synfig::KeyframeList::iterator iter,int index)
74 {
75         Gtk::TreeModel::iterator ret;
76
77         _keyframe_iterator*& data(static_cast<_keyframe_iterator*&>(ret->gobj()->user_data));
78         data=new _keyframe_iterator();
79         data->ref_count=1;
80         data->iter=iter;
81         data->index=index;
82
83         return ret;
84 }
85 */
86
87 synfig::KeyframeList::iterator model_iter_2_keyframe_iter(Gtk::TreeModel::iterator iter)
88 {
89         _keyframe_iterator* data(static_cast<_keyframe_iterator*>(iter->gobj()->user_data));
90         if(!data)
91                 throw std::runtime_error("bad data");
92         return data->iter;
93 }
94
95 int get_index_from_model_iter(Gtk::TreeModel::iterator iter)
96 {
97         _keyframe_iterator* data(static_cast<_keyframe_iterator*>(iter->gobj()->user_data));
98         if(!data)
99                 throw std::runtime_error("bad data");
100         return data->index;
101 }
102
103
104 /*
105 #ifndef TreeRowReferenceHack
106 class TreeRowReferenceHack
107 {
108         GtkTreeRowReference *gobject_;
109 public:
110         TreeRowReferenceHack():
111                 gobject_(0)
112         {
113         }
114
115         TreeRowReferenceHack(const Glib::RefPtr<Gtk::TreeModel>& model, const Gtk::TreeModel::Path& path):
116                 gobject_ ( gtk_tree_row_reference_new(model->gobj(), const_cast<GtkTreePath*>(path.gobj())) )
117         {
118         }
119
120         TreeRowReferenceHack(const TreeRowReferenceHack &x):
121                 gobject_ ( x.gobject_?gtk_tree_row_reference_copy(x.gobject_):0 )
122         {
123
124         }
125
126         void swap(TreeRowReferenceHack & other)
127         {
128                 GtkTreeRowReference *const temp = gobject_;
129                 gobject_ = other.gobject_;
130                 other.gobject_ = temp;
131         }
132
133         const TreeRowReferenceHack &
134         operator=(const TreeRowReferenceHack &rhs)
135         {
136                 TreeRowReferenceHack temp (rhs);
137                 swap(temp);
138                 return *this;
139         }
140
141         ~TreeRowReferenceHack()
142         {
143                 if(gobject_)
144                         gtk_tree_row_reference_free(gobject_);
145         }
146
147         Gtk::TreeModel::Path get_path() { return Gtk::TreeModel::Path(gtk_tree_row_reference_get_path(gobject_),false); }
148         GtkTreeRowReference *gobj() { return gobject_; }
149 };
150 #endif
151 */
152
153 /* === P R O C E D U R E S ================================================= */
154
155 void clear_iterator(GtkTreeIter* iter)
156 {
157         iter->stamp=0;
158         iter->user_data=iter->user_data2=iter->user_data3=0;
159 }
160
161 /* === M E T H O D S ======================================================= */
162
163 const Glib::Class&
164 KeyframeTreeStore_Class::init()
165 {
166         if(!gtype_)
167         {
168                 class_init_func_ = &KeyframeTreeStore_Class::class_init_function;
169
170                 const GTypeInfo derived_info =
171                 {
172                         sizeof(GObjectClass),
173                         NULL,
174                         NULL,
175                         class_init_func_,
176                         NULL,
177                         NULL,
178                         sizeof(GObject),
179                         0,
180                         0,
181                         NULL
182                 };
183
184                 gtype_ = g_type_register_static(G_TYPE_OBJECT, "KeyframeTreeStore", &derived_info, GTypeFlags(0));
185                 Gtk::TreeModel::add_interface(get_type());
186         }
187         return *this;
188 }
189
190 void
191 KeyframeTreeStore_Class::class_init_function(gpointer g_class, gpointer class_data)
192 {
193         // ???
194 }
195
196 KeyframeTreeStore::KeyframeTreeStore(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface_):
197         Glib::ObjectBase        ("KeyframeTreeStore"),
198         Glib::Object            (Glib::ConstructParams(keyframe_tree_store_class_.init(), (char*) 0)),
199         canvas_interface_       (canvas_interface_)
200 {
201         reset_stamp();
202         //reset_path_table();
203
204         canvas_interface()->signal_keyframe_added().connect(sigc::mem_fun(*this,&studio::KeyframeTreeStore::add_keyframe));
205         canvas_interface()->signal_keyframe_removed().connect(sigc::mem_fun(*this,&studio::KeyframeTreeStore::remove_keyframe));
206         canvas_interface()->signal_keyframe_changed().connect(sigc::mem_fun(*this,&studio::KeyframeTreeStore::change_keyframe));
207 }
208
209 KeyframeTreeStore::~KeyframeTreeStore()
210 {
211         synfig::info("KeyframeTreeStore::~KeyframeTreeStore(): Deleted");
212 }
213
214 Glib::RefPtr<KeyframeTreeStore>
215 KeyframeTreeStore::create(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface_)
216 {
217         KeyframeTreeStore *store(new KeyframeTreeStore(canvas_interface_));
218         Glib::RefPtr<KeyframeTreeStore> ret(store);
219         assert(ret);
220         return ret;
221 }
222
223 void
224 KeyframeTreeStore::reset_stamp()
225 {
226         stamp_=time(0)+reinterpret_cast<long>(this);
227 }
228
229 /*
230 void
231 KeyframeTreeStore::reset_path_table()
232 {
233         Gtk::TreeModel::Children::iterator iter;
234         const Gtk::TreeModel::Children children(children());
235         path_table_.clear();
236         for(iter = children.begin(); iter != children.end(); ++iter)
237         {
238                 Gtk::TreeModel::Row row(*iter);
239                 path_table_[(Keyframe)row[model.keyframe]]=TreeRowReferenceHack(Glib::RefPtr<KeyframeTreeStore>(this),Gtk::TreePath(row));
240         }
241 }
242 */
243
244
245 inline bool
246 KeyframeTreeStore::iterator_sane(const GtkTreeIter* iter)const
247 {
248         if(iter && iter->stamp==stamp_)
249                 return true;
250         g_warning("KeyframeTreeStore::iterator_sane(): Bad iterator stamp");
251         return false;
252 }
253
254 inline bool
255 KeyframeTreeStore::iterator_sane(const Gtk::TreeModel::iterator& iter)const
256 {
257         return iterator_sane(iter->gobj());
258 }
259
260 inline void
261 KeyframeTreeStore::dump_iterator(const GtkTreeIter* gtk_iter, const Glib::ustring &name)const
262 {
263 #if 0
264         if(!gtk_iter)
265         {
266                 g_warning("KeyframeTreeStore::dump_iterator: \"%s\" is NULL (Root?)",name.c_str());
267                 return;
268         }
269
270         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->user_data));
271
272         if(gtk_iter->stamp!=stamp_ || !iter)
273         {
274                 g_warning("KeyframeTreeStore::dump_iterator: \"%s\" is INVALID",name.c_str());
275                 return;
276         }
277
278         if((unsigned)iter->index>=canvas_interface()->get_canvas()->keyframe_list().size())
279                 g_warning("KeyframeTreeStore::dump_iterator: \"%s\"(%p) has bad index(index:%d)",name.c_str(),gtk_iter,iter->index);
280
281         g_warning("KeyframeTreeStore::dump_iterator: \"%s\"(%p) ref:%d, index:%d, time:%s",name.c_str(),gtk_iter,iter->ref_count,iter->index,iter->iter->get_time().get_string().c_str());
282 #endif
283 }
284
285 inline void
286 KeyframeTreeStore::dump_iterator(const Gtk::TreeModel::iterator& iter, const Glib::ustring &name)const
287 {
288         dump_iterator(iter->gobj(),name);
289 }
290
291 int
292 KeyframeTreeStore::time_sorter(const Gtk::TreeModel::iterator &rhs,const Gtk::TreeModel::iterator &lhs)
293 {
294         const Model model;
295
296         _keyframe_iterator *rhs_iter(static_cast<_keyframe_iterator*>(rhs->gobj()->user_data));
297         _keyframe_iterator *lhs_iter(static_cast<_keyframe_iterator*>(lhs->gobj()->user_data));
298
299         Time diff(rhs_iter->iter->get_time()-lhs_iter->iter->get_time());
300         if(diff<0)
301                 return -1;
302         if(diff>0)
303                 return 1;
304         return 0;
305 }
306
307 void
308 KeyframeTreeStore::set_value_impl(const Gtk::TreeModel::iterator& row, int column, const Glib::ValueBase& value)
309 {
310         if(!iterator_sane(row))
311                 return;
312
313         if(column>=get_n_columns_vfunc())
314         {
315                 g_warning("KeyframeTreeStore::set_value_impl: Bad column (%d)",column);
316                 return;
317         }
318
319         if(!g_value_type_compatible(G_VALUE_TYPE(value.gobj()),get_column_type_vfunc(column)))
320         {
321                 g_warning("KeyframeTreeStore::set_value_impl: Bad value type");
322                 return;
323         }
324
325         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(row.gobj()->user_data));
326
327         try
328         {
329                 if(column==model.time_delta.index())
330                 {
331                         Glib::Value<synfig::Time> x;
332                         g_value_init(x.gobj(),model.time.type());
333                         g_value_copy(value.gobj(),x.gobj());
334
335                         Time new_delta(x.get());
336                         if(new_delta<=Time::zero()+Time::epsilon())
337                         {
338                                 // Bad value
339                                 return;
340                         }
341
342                         Time old_delta((*row)[model.time_delta]);
343                         if(old_delta<=Time::zero()+Time::epsilon())
344                         {
345                                 // Bad old delta
346                                 return;
347                         }
348                         //Gtk::TreeModel::iterator row(row);
349                         //row++;
350                         //if(!row)return;
351
352                         Time change_delta(new_delta-old_delta);
353
354                         if(change_delta<=Time::zero()+Time::epsilon() &&change_delta>=Time::zero()-Time::epsilon())
355                         {
356                                 // Not an error, just no change
357                                 return;
358                         }
359
360                         {
361                                 Keyframe keyframe((*row)[model.keyframe]);
362                                 synfigapp::Action::Handle action(synfigapp::Action::create("keyframe_set_delta"));
363
364                                 if(!action)return;
365
366                                 action->set_param("canvas",canvas_interface()->get_canvas());
367                                 action->set_param("canvas_interface",canvas_interface());
368                                 action->set_param("keyframe",keyframe);
369                                 action->set_param("delta",change_delta);
370
371                                 canvas_interface()->get_instance()->perform_action(action);
372                         }
373
374                         return;
375                 }
376                 else
377                 if(column==model.time.index())
378                 {
379                         OneMoment one_moment;
380
381                         Glib::Value<synfig::Time> x;
382                         g_value_init(x.gobj(),model.time.type());
383                         g_value_copy(value.gobj(),x.gobj());
384                         synfig::Keyframe keyframe(*iter->iter);
385
386                         synfig::info("KeyframeTreeStore::set_value_impl():old_time=%s",keyframe.get_time().get_string().c_str());
387                         keyframe.set_time(x.get());
388                         synfig::info("KeyframeTreeStore::set_value_impl():new_time=%s",keyframe.get_time().get_string().c_str());
389
390                         synfigapp::Action::Handle action(synfigapp::Action::create("keyframe_set"));
391
392                         if(!action)
393                                 return;
394
395                         action->set_param("canvas",canvas_interface()->get_canvas());
396                         action->set_param("canvas_interface",canvas_interface());
397                         action->set_param("keyframe",keyframe);
398
399                         canvas_interface()->get_instance()->perform_action(action);
400                 }
401                 else if(column==model.description.index())
402                 {
403                         Glib::Value<Glib::ustring> x;
404                         g_value_init(x.gobj(),model.description.type());
405                         g_value_copy(value.gobj(),x.gobj());
406                         synfig::Keyframe keyframe(*iter->iter);
407                         keyframe.set_description(x.get());
408
409                         synfigapp::Action::Handle action(synfigapp::Action::create("keyframe_set"));
410
411                         if(!action)
412                                 return;
413
414                         action->set_param("canvas",canvas_interface()->get_canvas());
415                         action->set_param("canvas_interface",canvas_interface());
416                         action->set_param("keyframe",keyframe);
417
418                         canvas_interface()->get_instance()->perform_action(action);
419                 }
420                 else if(column==model.keyframe.index())
421                 {
422                         g_warning("KeyframeTreeStore::set_value_impl: This column is read-only");
423                 }
424                 else
425                 {
426                         assert(0);
427                 }
428         }
429         catch(std::exception x)
430         {
431                 g_warning(x.what());
432         }
433 }
434
435 Gtk::TreeModelFlags
436 KeyframeTreeStore::get_flags_vfunc ()
437 {
438         return Gtk::TREE_MODEL_LIST_ONLY;
439 }
440
441 int
442 KeyframeTreeStore::get_n_columns_vfunc ()
443 {
444         return model.size();
445 }
446
447 GType
448 KeyframeTreeStore::get_column_type_vfunc (int index)
449 {
450         return model.types()[index];
451 }
452
453 bool
454 KeyframeTreeStore::iter_next_vfunc (const iterator& xiter, iterator& iter_next) const
455 {
456         if(!iterator_sane(xiter)) return false;
457
458         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(xiter.gobj()->user_data));
459
460         if(iter->iter==canvas_interface()->get_canvas()->keyframe_list().end())
461                 return false;
462
463         _keyframe_iterator *next(new _keyframe_iterator());
464         iter_next.gobj()->user_data=static_cast<gpointer>(next);
465         next->ref_count=1;
466         next->index=iter->index+1;
467         next->iter=iter->iter;
468         ++next->iter;
469
470         if(next->iter==canvas_interface()->get_canvas()->keyframe_list().end())
471                 return false;
472
473         iter_next.gobj()->stamp=stamp_;
474
475         return true;
476 }
477
478 /*
479 bool
480 KeyframeTreeStore::iter_next_vfunc (GtkTreeIter* gtk_iter)
481 {
482         if(!iterator_sane(gtk_iter)) return false;
483
484         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->user_data));
485
486         // If we are already at the end, then we are very invalid
487         if(iter->iter==canvas_interface()->get_canvas()->keyframe_list().end())
488                 return false;
489
490         ++(iter->iter);
491
492         if(iter->iter==canvas_interface()->get_canvas()->keyframe_list().end())
493         {
494                 --(iter->iter);
495                 return false;
496         }
497         (iter->index)++;
498         return true;
499 }
500
501 bool
502 KeyframeTreeStore::iter_children_vfunc (GtkTreeIter* gtk_iter, const GtkTreeIter* parent)
503 {
504         dump_iterator(gtk_iter,"gtk_iter");
505         dump_iterator(parent,"parent");
506
507         if(!parent || !iterator_sane(parent))
508         {
509                 clear_iterator(gtk_iter);
510                 return false;
511         }
512
513         _keyframe_iterator *iter(new _keyframe_iterator());
514         iter->ref_count=1;
515         iter->index=0;
516         iter->iter=canvas_interface()->get_canvas()->keyframe_list().begin();
517
518         gtk_iter->user_data=static_cast<gpointer>(iter);
519         gtk_iter->stamp=stamp_;
520
521         return true;
522 }
523
524 bool
525 KeyframeTreeStore::iter_has_child_vfunc (const GtkTreeIter*parent)
526 {
527         dump_iterator(parent,"parent");
528
529         if(parent)
530                 return false;
531
532         return true;
533 }
534
535 int
536 KeyframeTreeStore::iter_n_children_vfunc (const GtkTreeIter* parent)
537 {
538         dump_iterator(parent,"parent");
539
540         if(parent)
541                 return 0;
542
543         return canvas_interface()->get_canvas()->keyframe_list().size();
544 }
545 */
546
547 int
548 KeyframeTreeStore::iter_n_root_children_vfunc () const
549 {
550         return canvas_interface()->get_canvas()->keyframe_list().size();
551 }
552
553 bool
554 KeyframeTreeStore::iter_nth_root_child_vfunc (int n, iterator& xiter)const
555 {
556         if(canvas_interface()->get_canvas()->keyframe_list().size()==0)
557         {
558                 return false;
559         }
560
561         if(n<0)
562         {
563                 g_warning("KeyframeTreeStore::iter_nth_root_child_vfunc: Out of range (negative index)");
564                 return false;
565         }
566         if(n && (unsigned)n>=canvas_interface()->get_canvas()->keyframe_list().size())
567         {
568                 g_warning("KeyframeTreeStore::iter_nth_child_vfunc: Out of range (large index)");
569                 return false;
570         }
571
572         _keyframe_iterator *iter(new _keyframe_iterator());
573         iter->ref_count=1;
574         iter->index=n;
575         iter->iter=canvas_interface()->get_canvas()->keyframe_list().begin();
576         while(n--)
577         {
578                 if(iter->iter==canvas_interface()->get_canvas()->keyframe_list().end())
579                 {
580                         g_warning("KeyframeTreeStore::iter_nth_child_vfunc: >>>BUG<<< in %s on line %d",__FILE__,__LINE__);
581                         delete iter;
582                         return false;
583                 }
584                 ++iter->iter;
585         }
586         xiter.gobj()->user_data=static_cast<gpointer>(iter);
587         xiter.gobj()->stamp=stamp_;
588         return true;
589 }
590
591 /*
592 bool
593 KeyframeTreeStore::iter_nth_child_vfunc (GtkTreeIter* gtk_iter, const GtkTreeIter* parent, int n)
594 {
595         dump_iterator(parent,"parent");
596
597         if(parent)
598         {
599                 g_warning("KeyframeTreeStore::iter_nth_child_vfunc: I am a list");
600                 clear_iterator(gtk_iter);
601                 return false;
602         }
603
604
605
606         _keyframe_iterator *iter(new _keyframe_iterator());
607         iter->ref_count=1;
608         iter->index=n;
609         iter->iter=canvas_interface()->get_canvas()->keyframe_list().begin();
610         while(n--)
611         {
612                 if(iter->iter==canvas_interface()->get_canvas()->keyframe_list().end())
613                 {
614                         g_warning("KeyframeTreeStore::iter_nth_child_vfunc: >>>BUG<<< in %s on line %d",__FILE__,__LINE__);
615                         delete iter;
616                         clear_iterator(gtk_iter);
617                         return false;
618                 }
619                 ++iter->iter;
620         }
621
622         gtk_iter->user_data=static_cast<gpointer>(iter);
623         gtk_iter->stamp=stamp_;
624         return true;
625 }
626
627 bool
628 KeyframeTreeStore::iter_parent_vfunc (GtkTreeIter* gtk_iter, const GtkTreeIter* child)
629 {
630         dump_iterator(child,"child");
631         iterator_sane(child);
632         clear_iterator(gtk_iter);
633         return false;
634 }
635 */
636
637 void
638 KeyframeTreeStore::ref_node_vfunc (iterator& xiter)const
639 {
640         GtkTreeIter* gtk_iter(xiter.gobj());
641         if(!gtk_iter || !iterator_sane(gtk_iter)) return;
642
643         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->user_data));
644         iter->ref_count++;
645 }
646
647 void
648 KeyframeTreeStore::unref_node_vfunc (iterator& xiter)const
649 {
650         GtkTreeIter* gtk_iter(xiter.gobj());
651         if(!gtk_iter || !iterator_sane(gtk_iter)) return;
652
653         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->user_data));
654         iter->ref_count--;
655         if(!iter->ref_count)
656         {
657                 delete iter;
658
659                 // Make this iterator invalid
660                 gtk_iter->stamp=0;
661         }
662 }
663
664 Gtk::TreeModel::Path
665 KeyframeTreeStore::get_path_vfunc (const TreeModel::iterator& gtk_iter)const
666 {
667         Gtk::TreeModel::Path path;
668
669         // If this is the root node, then return
670         // a root path
671         if(!iterator_sane(gtk_iter))
672                 return path;
673
674         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->gobj()->user_data));
675
676         path.append_index(iter->index);
677
678         return path;
679 }
680
681 bool
682 KeyframeTreeStore::get_iter_vfunc (const Gtk::TreeModel::Path& path, iterator& iter)const
683 {
684         if(path.get_depth()>=1)
685                 return iter_nth_root_child_vfunc(path.front(),iter);
686
687         // Error case
688         g_warning("KeyframeTreeStore::get_iter_vfunc(): Bad path \"%s\"",path.to_string().c_str());
689         //clear_iterator(iter);
690         return false;
691 }
692
693 bool
694 KeyframeTreeStore::iter_is_valid (const iterator& iter) const
695 {
696         return iterator_sane(iter);
697 }
698
699 void
700 KeyframeTreeStore::get_value_vfunc (const Gtk::TreeModel::iterator& gtk_iter, int column, Glib::ValueBase& value)const
701 {
702         dump_iterator(gtk_iter,"gtk_iter");
703         if(!iterator_sane(gtk_iter))
704                 return;
705
706         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->gobj()->user_data));
707
708         switch(column)
709         {
710         case 0:         // Time
711         {
712                 Glib::Value<synfig::Time> x;
713                 g_value_init(x.gobj(),x.value_type());
714                 x.set(iter->iter->get_time());
715                 g_value_init(value.gobj(),x.value_type());
716                 g_value_copy(x.gobj(),value.gobj());
717                 return;
718         }
719         case 3:         // Time Delta
720         {
721                 Glib::Value<synfig::Time> x;
722                 g_value_init(x.gobj(),x.value_type());
723
724                 synfig::Keyframe prev_keyframe(*iter->iter);
725                 synfig::Keyframe keyframe;
726                 {
727                         KeyframeList::iterator tmp(iter->iter);
728                         tmp++;
729                         if(tmp==get_canvas()->keyframe_list().end())
730                         {
731                                 x.set(Time(0));
732                                 g_value_init(value.gobj(),x.value_type());
733                                 g_value_copy(x.gobj(),value.gobj());
734                                 return;
735                         }
736                         keyframe=*tmp;
737                 }
738
739                 Time delta(0);
740                 try {
741                         delta=keyframe.get_time()-prev_keyframe.get_time();
742                 }catch(...) { }
743                 x.set(delta);
744                 g_value_init(value.gobj(),x.value_type());
745                 g_value_copy(x.gobj(),value.gobj());
746                 return;
747         }
748         case 1:         // Description
749         {
750                 g_value_init(value.gobj(),G_TYPE_STRING);
751                 g_value_set_string(value.gobj(),iter->iter->get_description().c_str());
752                 return;
753         }
754         case 2:         // Keyframe
755         {
756                 Glib::Value<synfig::Keyframe> x;
757                 g_value_init(x.gobj(),x.value_type());
758                 x.set(*iter->iter);
759                 g_value_init(value.gobj(),x.value_type());
760                 g_value_copy(x.gobj(),value.gobj());
761                 return;
762         }
763         default:
764                 break;
765         }
766 }
767
768 Gtk::TreeModel::Row
769 KeyframeTreeStore::find_row(const synfig::Keyframe &keyframe)
770 {
771         Gtk::TreeModel::Row row(*(children().begin()));
772         dump_iterator(row,"find_row,begin");
773         const GtkTreeIter *gtk_iter(row.gobj());
774         if(!iterator_sane(gtk_iter))
775                 throw std::runtime_error(_("Unable to find Keyframe in table"));
776
777         _keyframe_iterator *iter(static_cast<_keyframe_iterator*>(gtk_iter->user_data));
778
779         synfig::KeyframeList &keyframe_list(canvas_interface()->get_canvas()->keyframe_list());
780         if(keyframe_list.empty())
781                 throw std::runtime_error(_("There are no keyframes n this canvas"));
782
783         iter->index=0;
784
785         for(iter->iter=keyframe_list.begin();iter->iter!=keyframe_list.end() && *iter->iter!=keyframe;++iter->iter)
786         {
787                 iter->index++;
788         }
789         if(iter->iter==keyframe_list.end())
790                 throw std::runtime_error(_("Unable to find Keyframe in table"));
791         return row;
792 }
793
794 void
795 KeyframeTreeStore::add_keyframe(Keyframe keyframe)
796 {
797         try
798         {
799                 Gtk::TreeRow row(find_row(keyframe));
800                 dump_iterator(row.gobj(),"add_keyframe,row");
801                 Gtk::TreePath path(get_path(row));
802
803                 row_inserted(path,row);
804
805                 old_keyframe_list=get_canvas()->keyframe_list();
806                 //old_keyframe_list.add(keyframe);
807                 //old_keyframe_list.sort();
808         }
809         catch(std::exception x)
810         {
811                 g_warning(x.what());
812         }
813 }
814
815 void
816 KeyframeTreeStore::remove_keyframe(Keyframe keyframe)
817 {
818         try
819         {
820                 if(1)
821                 {
822                         Gtk::TreeRow row(find_row(keyframe));
823                         dump_iterator(row,"remove_keyframe,row");
824                         Gtk::TreePath path(get_path(row));
825                         row_deleted(path);
826
827                         old_keyframe_list.erase(keyframe);
828                 }
829                 else
830                 {
831                         g_warning("KeyframeTreeStore::remove_keyframe: Keyframe not in table");
832                 }
833         }
834         catch(std::exception x)
835         {
836                 DEBUGPOINT();
837                 g_warning(x.what());
838         }
839 }
840
841 void
842 KeyframeTreeStore::change_keyframe(Keyframe keyframe)
843 {
844         try
845         {
846                 Gtk::TreeRow row(find_row(keyframe));
847
848                 unsigned int new_index(get_index_from_model_iter(row));
849                 unsigned int old_index(0);
850                 synfig::KeyframeList::iterator iter;
851                 for(old_index=0,iter=old_keyframe_list.begin();iter!=old_keyframe_list.end() && (UniqueID)*iter!=(UniqueID)keyframe;++iter,old_index++);
852
853                 if(iter!=old_keyframe_list.end() && new_index!=old_index)
854                 {
855                         DEBUGPOINT();
856                         std::vector<int> new_order;
857                         for(unsigned int i=0;i<old_keyframe_list.size();i++)
858                         {
859                                 new_order.push_back(i);
860                         }
861                         if(new_order.size()>new_index)
862                         {
863                                 new_order.erase(new_order.begin()+new_index);
864                                 new_order.insert(new_order.begin()+old_index,new_index);
865
866                                 //new_order[old_index]=
867
868                                 rows_reordered (Path(), iterator(), &new_order[0]);
869                         }
870                         old_keyframe_list=get_canvas()->keyframe_list();
871
872                         row=find_row(keyframe);
873                 }
874
875                 dump_iterator(row,"change_keyframe,row");
876                 row_changed(get_path(row),row);
877         }
878         catch(std::exception x)
879         {
880                 DEBUGPOINT();
881                 g_warning(x.what());
882         }
883 }