File: editview.cc

package info (click to toggle)
nam 1.15-3.1~deb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 29,092 kB
  • ctags: 2,746
  • sloc: cpp: 17,338; tcl: 10,655; sh: 2,997; ansic: 1,252; makefile: 139; perl: 66
file content (1442 lines) | stat: -rw-r--r-- 43,013 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
/*
 * Copyright (C) 1997 by the University of Southern California
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 *
 * The copyright of this module includes the following
 * linking-with-specific-other-licenses addition:
 *
 * In addition, as a special exception, the copyright holders of
 * this module give you permission to combine (via static or
 * dynamic linking) this module with free software programs or
 * libraries that are released under the GNU LGPL and with code
 * included in the standard release of ns-2 under the Apache 2.0
 * license or under otherwise-compatible licenses with advertising
 * requirements (or modified versions of such code, with unchanged
 * license).  You may copy and distribute such a system following the
 * terms of the GNU GPL for this module and the licenses of the
 * other code concerned, provided that you include the source code of
 * that other code when and as the GNU GPL requires distribution of
 * source code.
 *
 * Note that people who make modified versions of this module
 * are not obligated to grant this special exception for their
 * modified versions; it is their choice whether to do so.  The GNU
 * General Public License gives permission to release a modified
 * version without this exception; this exception also makes it
 * possible to release a modified version which carries forward this
 * exception.
 *
 * $Header: /cvsroot/nsnam/nam-1/editview.cc,v 1.37 2011/10/31 05:46:16 tom_henderson Exp $
 */

#include <stdlib.h>
#ifdef WIN32
#include <windows.h>
#endif

#include <ctype.h>
#include <math.h>

#include "view.h"
#include "bbox.h"
#include "netmodel.h"
#include "editview.h"
#include "tclcl.h"
#include "paint.h"
#include "tag.h"
#include "node.h"
#include "edge.h"
#include "agent.h"

void EditView::DeleteCmdProc(ClientData cd)
{
	EditView *ev = (EditView *)cd;
	if (ev->tk_ != NULL) {
		Tk_DestroyWindow(ev->tk_);
	}
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------
EditView::EditView(const char *name, NetModel* m) 
        : NetView(name), defTag_(NULL)
{
	if (tk_!=0) {
		Tcl& tcl = Tcl::instance();
		cmd_ = Tcl_CreateCommand(tcl.interp(), Tk_PathName(tk_), 
					 command, 
					 (ClientData)this, DeleteCmdProc);
	}
	char str[256];
	model_ = m;
	sprintf(str, "def%-li", (long)this);
	defTag_ = new Tag(str);
	model_->add_tag(defTag_);
	editing_stage_ = NONE;
}

//----------------------------------------------------------------------
// EditView::EditView(const char *name, NetModel* m,
//                    int width, int height)
//----------------------------------------------------------------------
EditView::EditView(const char *name, NetModel* m, int width, int height)
  : NetView(name, SQUARE, width, height), defTag_(NULL) {

	char str[256];

	if (tk_!=0) {
		Tcl& tcl = Tcl::instance();
		cmd_ = Tcl_CreateCommand(tcl.interp(), Tk_PathName(tk_),
		                         command, (ClientData) this,
		                         DeleteCmdProc);
	}

	model_ = m;
	sprintf(str, "def%-li", (long)this);
	defTag_ = new Tag(name);
	model_->add_tag(defTag_);
	editing_stage_ = NONE;
}

EditView::~EditView()
{
	model_->remove_view(this);
	if (defTag_ != NULL) {
		model_->delete_tag(defTag_->name());
		delete defTag_;
		defTag_ = NULL;
	}
	// Delete Tcl command created
//  	Tcl& tcl = Tcl::instance();
//  	Tcl_DeleteCommandFromToken(tcl.interp(), cmd_);
}

//----------------------------------------------------------------------
// int 
// EditView::command(ClientData cd, Tcl_Interp* tcl,
//                   int argc, char **argv)
//    Parse Tcl command interface
//      - setPoint, addNode, addLink addAgent, deleteObject, etc...
//----------------------------------------------------------------------
int EditView::command(ClientData cd, Tcl_Interp* tcl,
                      int argc, CONST84 char **argv) {
  EditorNetModel * editor_net_model;
  Node * node, * source, * destination;
  Edge * edge;
  Agent * source_agent, * destination_agent;
  TrafficSource * traffic_source;
  LossModel * loss_model;
  //double world_x, world_y;
  
  if (argc < 2) {
    Tcl_AppendResult(tcl, "\"", argv[0], "\": arg mismatch", 0);
    return (TCL_ERROR);
  }

  char c = argv[1][0];
  int length = strlen(argv[1]);
  EditView * ev = (EditView *) cd;
  editor_net_model = (EditorNetModel *) ev->model_;

  float cx, cy;
  int flag;

  // Following implements several useful interactive commands of 
  // Tk's canvas. Their syntax and semantics are kept as close to
  // those of Tk canvas as possible.

  if ((c == 'd') && (strncmp(argv[1], "draw", length) == 0)) {
    // Redraw seen at time = argv[2]
    ev->draw(strtod(argv[2],NULL));
    return TCL_OK;

  } else if ((c == 'c') && (strncmp(argv[1], "close", length) == 0)) {
    ev->destroy();
    return TCL_OK;

  } else if ((c == 'd') &&
             (strncmp(argv[1], "dctag", length) == 0)) {
    /*
     * <view> dctag
     * 
     * Delete the current selection, start all over.
     */
    if (ev->defTag_ != NULL)
      ev->defTag_->remove();
    ev->draw();
    return (TCL_OK);

  } else if ((c == 's') &&
             (strncmp(argv[1], "setPoint", length) == 0)) {
    /*
     * <view> setPoint x y addFlag
     * 
     * Select the object (if any) under point (x, y). If no such
     * object, set current point to (x, y)
     */
    if (argc != 5) {
      Tcl_AppendResult(tcl, "wrong # args: should be \"",
                            argv[0], " setPoint x y addFlag\"", 
                            (char *)NULL);
      return (TCL_ERROR);
    }
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    flag = strtol(argv[4], NULL, 10);
    return ev->cmdSetPoint(cx, cy, flag);

  } else if ((c == 'd') && (strncmp(argv[1], "deleteObject", length) == 0)) { 
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return  ev->cmdDeleteObj(cx, cy);

  } else if ((c == 'm') && (strncmp(argv[1], "moveTo", length) == 0)) { 
    /*
     * <view> moveto x y
     * 
     * Move the current selected object (if any) or the 
     * rubber band to point (x, y)
     */
    if (argc != 4) {
      Tcl_AppendResult(tcl, "wrong # args: should be \"",
                             argv[0],
                            " moveTo x y\"", (char *)NULL);
      return (TCL_ERROR);
    }
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return ev->cmdMoveTo(cx, cy);

  } else if ((c == 'r') && (strncmp(argv[1], "releasePoint", length) == 0)) {
    /*
     * <view> releasePoint x y
     * 
     * If any object is selected, set the object's
     * position to point (x,y); otherwise set the rubber
     * band rectangle and select all the objects in that
     * rectangle Note: we need a default tag for the
     * selection in rubber band.  
     */
    if (argc != 4) {
      Tcl_AppendResult(tcl, "wrong # args: should be \"",
           argv[0],
           " releasePoint x y\"", (char *)NULL);
      return (TCL_ERROR);
    }
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return ev->cmdReleasePoint(cx, cy);


  } else if ((c == 's') && (strncmp(argv[1], "setNodeProperty", length) == 0)) {
    // <view> setNodeProperty nodeid nodepropertyvalue properyname
    int nodeid = atoi(argv[2]);
    return ev->cmdsetNodeProperty(nodeid, argv[3], argv[4]);

  } else if ((c == 's') && (strncmp(argv[1], "setAgentProperty", length) == 0)) {
     // <view> setAgentProperty nodeid nodepropertyvalue properyname
    int agentid = atoi(argv[2]);
    return ev->cmdsetAgentProperty(agentid, argv[3], argv[4]);

  } else if ((c == 's') && (strncmp(argv[1], "setLinkProperty", length) == 0)) {
    // <view> setLinkProperty sid did propertyvalue properyname
    int source_id = atoi(argv[2]);
    int destination_id = atoi(argv[3]);
    return ev->cmdsetLinkProperty(source_id, destination_id,
                                  argv[4], argv[5]);
  } else if ((c == 's') &&
             (strncmp(argv[1], "setQueueHandleProperty", length) == 0)) {
    // Called by the following code in Editor.tcl
    // ------------------------------------------------------------
    // $editor_view_ setQueueHandleProperty $source $destination 
    //                                      $property_value 
    //                                      $property_variable
    //
    //  - argv[2] = source
    //  - argv[3] = destination
    //  - argv[4] = value
    //  - argv[5] = variable name

    editor_net_model->setQueueHandleProperty(atoi(argv[2]), atoi(argv[3]),
                                              argv[4], argv[5]);

    ev->draw();
    return TCL_OK;

  } else if ((c == 's') &&
             (strncmp(argv[1], "setTrafficSourceProperty", length) == 0)) {
    // <view> setTrafficSourceProperty id propertyvalue propertyname
    int id = atoi(argv[2]);
    const char * value = argv[3];
    const char * variable_name = argv[4];
    return ev->cmdsetTrafficSourceProperty(id, value, variable_name);
 
  } else if ((c == 's') &&
             (strncmp(argv[1], "setLossModelProperty", length) == 0)) {
    // <view> setLossModelProperty id propertyvalue propertyname
    int id = atoi(argv[2]);
    const char * value = argv[3];
    const char * variable_name = argv[4];
    return ev->cmdsetLossModelProperty(id, value, variable_name);

  } else if ((c == 'a') && (strncmp(argv[1], "addNode", length) == 0)) {
    // <view> addNode x y
    //   - add a new Node under current (x,y) with default size
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return ev->cmdaddNode(cx, cy);

  } else if ((c == 'i') && (strncmp(argv[1], "importNode", length) == 0)) {
    // Used when reading a nam editor file to add a node created in tcl
    // to this editview and its editornetmodel

    node = (Node *) TclObject::lookup(argv[2]);
    //world_x = atof(argv[3]);
    //world_y = atof(argv[4]);

    if (node) {
      if (editor_net_model->addNode(node)) {
     //   node->place(world_x, world_y);
     //   ev->draw();
        return TCL_OK;
      }
    }

    fprintf(stderr, "Error creating node.\n");
    return TCL_ERROR;

  } else if ((c == 'a') && (strncmp(argv[1], "attachNodes", length) == 0)) {
    // <view> linkNodes source_id destination_id
    //   - link 2 existing nodes to each other

    edge = (Edge *) TclObject::lookup(argv[2]);
    source = (Node *) TclObject::lookup(argv[3]);
    destination = (Node *) TclObject::lookup(argv[4]);
    edge->attachNodes(source, destination);
    editor_net_model->addEdge(edge);

    ev->draw();  
    return TCL_OK;

  } else if ((c == 'a') && (strncmp(argv[1], "addLink", length) == 0)) {
    //  <view> addLink x y 
    //    - add a new Link if its start AND end point is inside of 
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return ev->cmdaddLink(cx, cy);

  } else if ((c == 'a') && (strncmp(argv[1], "addQueueHandle", length) == 0)) {
    //  <view> addQueueHandle edge queue_type
    edge = (Edge *) TclObject::lookup(argv[2]);
    if (edge) {
      editor_net_model->addQueueHandle(edge, argv[3]);
    }
    return TCL_OK;
    

  
  // --------------- Agent -----------------
  } else if ((c == 'a') && (strncmp(argv[1], "addAgent", length) == 0)) {
    // <view> addAgent x y agent
    //   - add a new agent
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    const char * agent_name = argv[4];
    return ev->cmdaddAgent(cx, cy, agent_name);

  } else if ((c == 'i') && (strncmp(argv[1], "importAgent", length) == 0)) {
    source_agent = (Agent *) TclObject::lookup(argv[2]);
    node = (Node *) TclObject::lookup(argv[3]);
    return editor_net_model->addAgent(source_agent, node);

  } else if ((c == 'l') && (strncmp(argv[1], "linkAgents", length) == 0)) {
    // <view> linkAgents source_id destination_id
    //   - link 2 existing agents to each other
    source_agent = (Agent *) TclObject::lookup(argv[2]);
    destination_agent = (Agent *) TclObject::lookup(argv[3]);
    return editor_net_model->addAgentLink(source_agent, destination_agent);

  } else if ((c == 's') && (strncmp(argv[1], "showAgentLink", length) == 0)) {
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    return ev->showAgentLink(cx, cy);

  } else if ((c == 'h') && (strncmp(argv[1], "hideAgentLinks", length) == 0)) {
    editor_net_model->hideAgentLinks();
    ev->draw();
    return TCL_OK;
	 
  // --------------- Traffic Source -----------------
  } else if ((c == 'a') &&
             (strncmp(argv[1], "addTrafficSource", length) == 0)) {
    // <view> addTrafficSource x y trafficsource_type
    //   -  add a new TrafficSource
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    // argv[4] is the name of the traffic source
    return ev->cmdaddTrafficSource(cx, cy, argv[4]);

  } else if ((c == 'a') &&
             (strncmp(argv[1], "attachTrafficSource", length) == 0)) {
    traffic_source = (TrafficSource *) TclObject::lookup(argv[2]);
    source_agent = (Agent *) TclObject::lookup(argv[3]);
    return editor_net_model->addTrafficSource(traffic_source, source_agent);


  // ----------- Loss Models ----------------
  } else if ((c == 'a') &&
             (strncmp(argv[1], "addLossModel", length) == 0)) {
    // <view> addLossModel x y lossmodel
    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);
    // argv[4] is the type of the loss model to add
    return ev->cmdaddLossModel(cx, cy, argv[4]);

  } else if ((c == 'a') &&
             (strncmp(argv[1], "attachLossModel", length) == 0)) {
    loss_model = (LossModel *) TclObject::lookup(argv[2]);
    source = (Node *) TclObject::lookup(argv[3]);
    destination = (Node *) TclObject::lookup(argv[4]);

    edge = source->find_edge(destination->number());
    return editor_net_model->addLossModel(loss_model, edge);

  
  // ----------- Object and Object Properties ----------------
  } else if ((c == 'g') &&
             (strncmp(argv[1], "getObjectInformation", length) == 0)) {
 
    // <view> getObject x y
    //   - return object under current point

    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);

    return ev->cmdgetObjectInformation(cx, cy);

  } else if ((c == 'g') &&
             (strncmp(argv[1], "getObjectProperty", length) == 0)) {
    // <view> getObjectPropert x y [type]
    //  - return properties for object under current point
    //  - if type is passed in then pass that to object

    cx = strtod(argv[2], NULL);
    cy = strtod(argv[3], NULL);

    if (argc == 5) {
      return ev->cmdgetObjectProperties(cx, cy, argv[4]);
    } else {
      return ev->cmdgetObjProperty(cx, cy);
    }


  } else if ((c == 'v') && (strncmp(argv[1], "view_mode", length)==0)) {
    /*
     * <view> view_mode
     * 
     * clear defTag_ and change to view mode
     */
    ev->view_mode();
    return TCL_OK;
  }

  return (NetView::command(cd, tcl, argc, argv));
}

int EditView::cmdsetNodeProperty(int id, const char * value, const char * variable)
{
	EditorNetModel* emodel_ = (EditorNetModel *) model_;	
  // goto enetmodel.cc
	emodel_->setNodeProperty(id, value, variable);

//	EditType oldt_;
//	oldt_ = editing_stage_;
//	editing_stage_ = END_OBJECT;
	draw();
//	editing_stage_ = NONE;
//	model_->update(model_->now());
//	editing_stage_ = oldt_;

	return(TCL_OK);
}

int EditView::cmdsetAgentProperty(int id, const char * value, const char * variable) {
	EditorNetModel* emodel_ = (EditorNetModel *) model_;
	emodel_->setAgentProperty(id, value ,variable);
	draw();  
	return(TCL_OK);
}


int EditView::cmdsetLinkProperty(int sid, int did,
                                 const char * value, const char * variable) {
  EditorNetModel * emodel_ = (EditorNetModel *) model_;
  emodel_->setLinkProperty(sid, did, value, variable);
  draw();
  return(TCL_OK);
}

//----------------------------------------------------------------------
// int
// EditView::cmdsetTrafficSourceProperty(int sid, int did, const char *pv, int pn)
//----------------------------------------------------------------------
int
EditView::cmdsetTrafficSourceProperty(int id, const char * value, const char * variable) {
  EditorNetModel* emodel_ = (EditorNetModel *) model_;
  emodel_->setTrafficSourceProperty(id, value, variable);
  draw();
  return(TCL_OK);
}        

//----------------------------------------------------------------------
// int
// EditView::cmdsetLossModelProperty(int id, char * value, char * variable) 
//----------------------------------------------------------------------
int
EditView::cmdsetLossModelProperty(int id, const char * value, const char * variable) {
  EditorNetModel* emodel_ = (EditorNetModel *) model_;
  emodel_->setLossModelProperty(id, value, variable);
  draw();
  return(TCL_OK);
}        

//----------------------------------------------------------------------
// int 
// EditView::cmdgetObjProperty(float cx, float cy)
//   - get properties for a selected object
//----------------------------------------------------------------------
int 
EditView::cmdgetObjProperty(float cx, float cy) { 
	Animation *p;
	Tcl& tcl = Tcl::instance();

	// matrix_ comes from class View (view.h)
	//  - imap is the inverse mapping
	//    (i.e from screen to world coordinate systems)
	matrix_.imap(cx, cy);

	// Finds the object which contains the coordinate (cx, cy)
	p = model_->inside(cx, cy);
	
	if (p == NULL) {
	   tcl.resultf("NONE");
	} else {
	   tcl.resultf("%s",p->property());
 	}
	return(TCL_OK);	
}


//----------------------------------------------------------------------
// int 
// EditView::cmdgetObjectProperties(float cx, float cy, char * type)
//   - get properties for a selected object and the specific 
//     type within that object
//----------------------------------------------------------------------
int 
EditView::cmdgetObjectProperties(float cx, float cy, const char * type) { 
	Animation * animation_object;
	Tcl& tcl = Tcl::instance();

	// matrix_ comes from class View (view)
	//  - imap is the inverse mapping
	//    (i.e from screen to world coordinate systems)
	matrix_.imap(cx, cy);

	// Finds the object which contains the coordinate (cx, cy)
	animation_object = model_->inside(cx, cy);
	
	if (animation_object == NULL) {
	   tcl.resultf("NONE");
	} else {
	   tcl.resultf("%s",animation_object->getProperties(type));
	}
	return(TCL_OK);	
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------
int EditView::cmdgetObjectInformation(float cx, float cy) { 
	Tcl& tcl = Tcl::instance();
	matrix_.imap(cx, cy);
	Animation *p = model_->inside(cx, cy);

	if (p == NULL) {
		tcl.resultf("NONE");
	} else {
		tcl.resultf("%s",p->info());
	}
	return(TCL_OK);	
}


//----------------------------------------------------------------------
// int
// EditView::cmdaddLink(float cx, float cy)
//   - Note: all cx_ and cy_ below are in *window* coordinates
//----------------------------------------------------------------------
int
EditView::cmdaddLink(float cx, float cy) {
  Animation * p;
  static Animation * old_p;
  EditorNetModel* emodel_ = (EditorNetModel *) model_;

  cx_ = cx;
  cy_ = cy;
  matrix_.imap(cx, cy);

  // Do we have a node  on current point ?
  p = model_->inside(cx, cy);

  if (p == NULL) {
    defTag_->remove();
    if (editing_stage_ == START_LINK) {
       editing_stage_ = NONE;
      draw();
    }
    return (TCL_OK);
  }

  if (p->classid() == ClassNodeID) {

    if (editing_stage_ != START_LINK) {
      old_p = p;                /* remember the orig node */
      startSetObject(p, cx_, cy_);
      editing_stage_ = START_LINK;

     } else if ((old_p == p)||(old_p->classid()!=ClassNodeID)) {
       editing_stage_ = NONE;
       draw();
       // to support making link by click-&-click 
       editing_stage_ = START_LINK; 

     } else {
       // add a new link b/w the two nodes
       startSetObject(p, cx_, cy_);

       Node *src, *dst;
       src = (Node *)old_p;
       dst = (Node *)p;
       emodel_->addLink(src, dst);
       editing_stage_ = END_OBJECT;
     
       // Erase old positions
       defTag_->draw(this, model_->now());
       // At least we should redo scale estimation and
       // place everything
       defTag_->move(this, rb_.xmax - oldx_, rb_.ymax - oldy_);
       model_->recalc();
       model_->render(this);
       defTag_->remove();
       editing_stage_ = NONE;
       draw();
       editing_stage_ = NONE;
     }

  } else if (p->classid() == ClassAgentID) {
    if (editing_stage_ != START_LINK) {
      old_p = p;
      startSetObject(p, cx_, cy_);
      editing_stage_ = START_LINK;
    } else if ((old_p == p)||(old_p->classid()!= ClassAgentID)) {
      editing_stage_ = NONE;
      draw();
      // to support making agent-link by click-&-click
      editing_stage_ = START_LINK;
    } else {
      startSetObject(p, cx_, cy_);

      Agent *src_agent, *dst_agent;
      src_agent = (Agent *)old_p;
      dst_agent = (Agent *)p;
      emodel_->addAgentLink(src_agent, dst_agent);
      editing_stage_ = END_OBJECT;

      defTag_->draw(this, model_->now());
      defTag_->move(this, rb_.xmax - oldx_, rb_.ymax - oldy_);
      model_->recalc();
      model_->render(this);
      defTag_->remove();
      editing_stage_ = NONE;
      draw();
    }
  } else {
    editing_stage_ = NONE;
  }
  return(TCL_OK);
}


//----------------------------------------------------------------------
// int 
// EditView::cmdaddAgent(float cx, float cy, char* agent)
//----------------------------------------------------------------------
int EditView::cmdaddAgent(float cx, float cy, const char* agent) {
  Animation * p;
  Node * src;
  EditorNetModel* emodel_ = (EditorNetModel *)model_;

  // Switch from screen coordinates to world coordinates
  matrix_.imap(cx, cy);

  // Do we have a node on the clicked point ?
  p = model_->inside(cx, cy);
  if (p == NULL) {
    defTag_->remove();
    return (TCL_OK);
  } 

  if (p->classid() == ClassNodeID) {
    // Yes, we have a node to which we can add the agent
    src = (Node *) p;
    // goto EditorNetModel::addAgent(...) in enetmodel.cc
    emodel_->addAgent(src, agent, cx, cy);
    draw();
  } else {
    return (TCL_OK);
  }
  return(TCL_OK);
}

//----------------------------------------------------------------------
// int EditView::showAgentLink(float cx, float cy)
//----------------------------------------------------------------------
int EditView::showAgentLink(float cx, float cy) {
	Animation * animation;
	Agent * agent;

	// Change from screen coordinates to worl coordinates
	matrix_.imap(cx, cy);

	// Get the clicked on animation object.
	animation = model_->inside(cx, cy);

	if (animation != NULL && animation->classid() == ClassAgentID) {
		agent = (Agent *) animation;
		agent->showLink();
		draw();
	}

	return(TCL_OK);	
}

//----------------------------------------------------------------------
// int 
// EditView::cmdaddNode(float cx, float cy)
//   Note: all cx_ and cy_ below are in *window* coordinates
//----------------------------------------------------------------------
int EditView::cmdaddNode(float cx, float cy) {
  Animation * animation_object;
  EditorNetModel* emodel_ = (EditorNetModel *)model_;

  // Convert screen coordinates to world coordinates
  matrix_.imap(cx, cy);

  // Check to see if an object already exists on the click point
  animation_object = model_->inside(cx,cy);
  if (animation_object == NULL) {
    defTag_->remove();
    emodel_->addNode(cx, cy);		
    draw();
  } 
  return(TCL_OK);
}

//----------------------------------------------------------------------
// int
// EditView::cmdDeleteObj(float cx, float cy)
//----------------------------------------------------------------------
int
EditView::cmdDeleteObj(float cx, float cy) {
  Animation * p;  // I don't know why p was chosen for the varible name
                  // Just to confuse other programmers, I guess
  
  // First of all, clear the old point 
  cx_ = cx;
  cy_ = cy;
                
  // Do we have an animation object on the clicked point?
  matrix_.imap(cx, cy);
  p = model_->inside(cx, cy);
  if (p == NULL) {
    defTag_->remove();
    return (TCL_OK);
  }       
  
  // If object is already selected unselect it
  if (p->isTagged()) {
    if (p->numTag() > 1) {
      fprintf(stderr, "Error: More than one tag for an object %d!\n",
                       p->id());
      p = NULL;
    } else {
      p = p->getLastTag();
    }
  }

  // Only nodes, links, agents, traffic sources and
  // loss models can be deleted
  if ((p->classid() != ClassNodeID) &&
      (p->classid() != ClassEdgeID) &&
      (p->classid() != ClassAgentID) &&
      (p->classid() != ClassTrafficSourceID) &&
      (p->classid() != ClassLossModelID)) {
    p = NULL;
  }

  if (p == NULL) {
    defTag_->remove();
  } else {
    if (p->classid() == ClassNodeID) {
      Node * n = (Node *) p;
      EditorNetModel * emodel_ = (EditorNetModel *) model_;
      emodel_->removeNode(n);
      draw();
    } 
    if (p->classid() == ClassEdgeID) {
      Edge * e = (Edge *) p;
      EditorNetModel * emodel_ = (EditorNetModel *) model_;
      emodel_->removeLink(e);
      draw();
    } 
    if (p->classid() == ClassAgentID) {
      Agent * a = (Agent *) p;
      EditorNetModel* emodel_ = (EditorNetModel *) model_;
      emodel_->removeAgent(a);
      draw();
    }
    if (p->classid() == ClassTrafficSourceID) {
      TrafficSource * ts = (TrafficSource *) p;
      EditorNetModel* emodel_ = (EditorNetModel *) model_;
      emodel_->removeTrafficSource(ts);
      draw();
    }
    if (p->classid() == ClassLossModelID) {
      LossModel * lossmodel = (LossModel *) p;
      EditorNetModel* emodel_ = (EditorNetModel *) model_;
      emodel_->removeLossModel(lossmodel);
      draw();
    }

  }

  return (TCL_OK);
}

//----------------------------------------------------------------------
// int 
// EditView::cmdaddTrafficSource(float cx, float cy, char * type)
//----------------------------------------------------------------------
int
EditView::cmdaddTrafficSource(float cx, float cy, const char * type) {
  Animation * object;
  Agent * agent;
  EditorNetModel* emodel_ = (EditorNetModel *)model_;

  // Switch from screen coordinates to world coordinates
  matrix_.imap(cx, cy);

  // Do we have an agent on the clicked point ?
  object = model_->inside(cx, cy);
  if (object == NULL) {
    defTag_->remove();
    return (TCL_OK);
  } 

  if (object->classid() == ClassAgentID) {
    // Yes, we have a node to which we can add the agent
    agent = (Agent *) object;
    // goto EditorNetModel::addTrafficSource(...) in enetmodel.cc
    emodel_->addTrafficSource(agent, type, cx, cy);
    draw();
  } else {
    return (TCL_OK);
  }
  return(TCL_OK);
}

//----------------------------------------------------------------------
// int 
// EditView::cmdaddLossModel(float cx, float cy, char * type)
//----------------------------------------------------------------------
int
EditView::cmdaddLossModel(float cx, float cy, const char * type) {
	Animation * object;
	Node * source, * destination;
	Edge * edge, * reverse_edge;
	EditorNetModel* emodel_ = (EditorNetModel *) model_;

	// Switch from screen coordinates to world coordinates
	matrix_.imap(cx, cy);

	// Do we have a link on the clicked point ?
	object = model_->inside(cx, cy);
	if (object == NULL) {
		defTag_->remove();
		return (TCL_OK);
	} 

	if (object->classid() == ClassEdgeID ||
			object->classid() == ClassQueueHandleID ) {
		//
		// Yes, we have a possible edge to which we can add the loss model

		if (object->classid() == ClassQueueHandleID ) {
			edge = ((QueueHandle *) object)->getEdge();
		} else {
			edge = (Edge *) object;
		}

		if (edge) {
			// Check distance to source to determine if we should attach 
			// to the forward or reverse edge
			source = edge->getSourceNode();
			destination = edge->getDestinationNode();

			if (source->distance(cx, cy) > destination->distance(cx,cy)) {
				// if source is farther away than destination then place
				// this loss model on the reverse edge
				reverse_edge = emodel_->lookupEdge(destination->number(), source->number());
				if (reverse_edge) { // Make sure there is a reverse edge
					edge = reverse_edge;
				}
			}

			// goto EditorNetModel::addTrafficSource(...) in enetmodel.cc
			emodel_->addLossModel(edge, type, cx, cy);
			draw();
		}
	}

	return(TCL_OK);
}

// ---------------------------------------------------------------------
// int 
// EditView::cmdSetPoint(float cx, float cy, int bAdd)
//   - Note: all cx_ and cy_ below are in *window* coordinates
// ---------------------------------------------------------------------
int 
EditView::cmdSetPoint(float cx, float cy, int add_object) {
  Animation * animation_object;
  // First of all, clean the old group
  cx_ = cx;
  cy_ = cy;

  // Inverse Map cx, cy to world coordinates
  matrix_.imap(cx, cy);

  // Do we have anything on current point?
  animation_object = model_->inside(cx, cy);

  // If nothing at this point start selection rubberband
  if (animation_object == NULL) {
    defTag_->remove();
    startRubberBand(cx_, cy_);
    return (TCL_OK);
  }

  // Otherwise look to move object if it is a node or a Tag
  //   - A tag is a grouping marker, if an object is tagged then
  //     that tag group can be moved together
  if (animation_object->isTagged()) {
    if (animation_object->numTag() > 1) {
      fprintf(stderr, "Error: More than one tag for object %d!\n",
                       animation_object->id());
      animation_object = NULL;
    } else {
      animation_object = animation_object->getLastTag();
    }
  }
  
  // Only nodes and tags can be moved
  if ((animation_object->classid() == ClassNodeID) ||
      (animation_object->classid() == ClassTagID)) {
    
    // If a single non-tag object is selected, or explicitly 
    // instructed, remove the previous selection.  Otherwise,
    // the object under the current point will be added to the
    // entire tagged selection
    if (!add_object && (animation_object != defTag_)) {
      defTag_->remove();
    }

    // Just tags the object as being selected.
    // Draws a box around the tagged object
    startSetObject(animation_object, cx_, cy_);

  } else {
    defTag_->remove();
    startRubberBand(cx_, cy_);
  }

  return (TCL_OK);
}

//----------------------------------------------------------------------
// int
// EditView::cmdMoveTo(float cx, float cy)
//   - Moves object to end location
//   - Ends the rubber band selection
//----------------------------------------------------------------------
int EditView::cmdMoveTo(float cx, float cy) {
  // cx and cy should be in screen (canvas) coordinates
  cx_ = cx;
  cy_ = cy;

  switch (editing_stage_) {
    case START_RUBBERBAND:
    case MOVE_RUBBERBAND:
      oldx_ = rb_.xmax;
      oldy_ = rb_.ymax;
      rb_.xmax = cx_;
      rb_.ymax = cy_;
      editing_stage_ = MOVE_RUBBERBAND;
      clip_ = rb_;
      clip_.adjust();

      if (clip_.xmin > oldx_) 
        clip_.xmin = oldx_;

      if (clip_.xmax < oldx_) 
        clip_.xmax = oldx_;

      if (clip_.ymin > oldy_) 
        clip_.ymin = oldy_;

      if (clip_.ymax < oldy_) 
        clip_.ymax = oldy_;

      break;

    case START_OBJECT:
    case MOVE_OBJECT: {
      oldx_ = rb_.xmax;
      oldy_ = rb_.ymax;
      rb_.xmax = cx_;
      rb_.ymax = cy_;
      editing_stage_ = MOVE_OBJECT;
      clip_.clear();
      defTag_->merge(clip_);
      matrix_.map(clip_.xmin, clip_.ymin);
      matrix_.map(clip_.xmax, clip_.ymax);
      clip_.adjust();
      // Actual move and final bbox computation is done in render
      break;

      case START_LINK:
      case MOVE_LINK:
        // I believe this is never reached and should be removed
        // maybe it is changed in the future
        oldx_ = rb_.xmax;
        oldy_ = rb_.ymax;
        rb_.xmax = cx_;
        rb_.ymax = cy_;
        editing_stage_ = MOVE_LINK;
        clip_ = rb_;
        clip_.adjust();
        if (clip_.xmin > oldx_)
          clip_.xmin = oldx_;
        if (clip_.xmax < oldx_)
          clip_.xmax = oldx_;
        if (clip_.ymin > oldy_)
          clip_.ymin = oldy_;
        if (clip_.ymax < oldy_)
          clip_.ymax = oldy_;
        break;
      }
    default:
      // to avoid segmentation fault from click-n-dragging
      return (TCL_OK);
  }
  draw();
  return (TCL_OK);
}

int EditView::cmdReleasePoint(float cx, float cy) {
	static char buffer[512];
	int chars_written;
	
	cx_ = cx;
	cy_ = cy;
	Tcl & tcl = Tcl::instance();

	switch (editing_stage_) {
		case START_RUBBERBAND:
		case MOVE_RUBBERBAND: {
			oldx_ = rb_.xmax; oldy_ = rb_.ymax;
			rb_.xmax = cx_, rb_.ymax = cy_;
			// Need to add the region to defTag_
			clip_ = rb_;
			clip_.adjust();
			BBox bb = clip_;
			matrix_.imap(bb.xmin, bb.ymin);
			matrix_.imap(bb.xmax, bb.ymax);
			bb.adjust();
			model_->tagArea(bb, defTag_, 1);

			// We can do a total redraw
			editing_stage_ = NONE;
			draw();

			// Get time movement info for node markers on time slider
//			defTag_->addNodeMovementDestination(this, cx - oldx_, cy - oldy_, model_->now());
//			chars_written = defTag_->getNodeMovementTimes(buffer, 512);
//			if (chars_written == -1) {
				tcl.resultf("NONE");
//			} else {
//				tcl.resultf("%s", buffer);
//			}
			break;
		}

		case START_OBJECT:
		case MOVE_OBJECT: {
			oldx_ = rb_.xmax;
			oldy_ = rb_.ymax;
			rb_.xmax = cx_;
			rb_.ymax = cy_;
			clip_.clear();
			defTag_->merge(clip_);
			matrix_.map(clip_.xmin, clip_.ymin);
			matrix_.map(clip_.xmax, clip_.ymax);
			clip_.adjust();

			// Later in render() we'll compute the real bbox
			editing_stage_ = END_OBJECT;
			draw();

			editing_stage_ = NONE;
			model_->update(model_->now());
//      defTag_->move(this, rb_.xmax - oldx_, rb_.ymax - oldy_);

			// Get time movement info for node markers on time slider
			defTag_->addNodeMovementDestination(this, cx - oldx_, cy - oldy_, model_->now());
			chars_written = defTag_->getNodeMovementTimes(buffer, 512);
			if (chars_written == -1) {
				tcl.resultf("NONE");
			} else {
				tcl.resultf("%s", buffer);
			}
			break;
		}

		case START_LINK:
		case MOVE_LINK: {		
			editing_stage_ = START_LINK;
			draw();
			model_->update(model_->now());
			cmdaddLink(cx_, cy_);
			tcl.resultf("NONE");
			break;
		}

		default:
			// This cannot happen!
			editing_stage_ = NONE;
			draw();
			tcl.resultf("NONE");
	}

	return (TCL_OK);
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------
inline void
EditView::startRubberBand(float cx, float cy) {
	// Nothing's here. Set rubber band.
	editing_stage_ = START_RUBBERBAND;
	rb_.xmin = rb_.xmax = cx;
	rb_.ymin = rb_.ymax = cy;
	clip_ = rb_;
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------
inline void
EditView::startSetObject(Animation * animation_object, float cx, float cy) {
	// Find an object, add it to group
	editing_stage_ = START_OBJECT;

	// Add it into defTag_
	if (animation_object != defTag_) {
		model_->tagObject(defTag_, animation_object);
	}

	rb_.xmin = rb_.xmax = cx;
	rb_.ymin = rb_.ymax = cy;
	clip_.clear();
	defTag_->merge(clip_);

	// for the bounding box (bbox)
	oldx_ = rb_.xmax;
	oldy_ = rb_.ymax;
	rb_.xmax = cx_;
	rb_.ymax = cy_;
	clip_.clear();
	defTag_->merge(clip_);
	matrix_.map(clip_.xmin, clip_.ymin);
	matrix_.map(clip_.xmax, clip_.ymax);
	clip_.adjust();

	// Later in render() we'll compute the real bbox

	// We have selected the object and now we are at the end of 
	// the object selection process
	editing_stage_ = END_OBJECT;
	draw();

	editing_stage_ = NONE;
	model_->update(model_->now());
	editing_stage_ = START_OBJECT;
}





//----------------------------------------------------------------------
// void EditView::draw()
//----------------------------------------------------------------------
void EditView::draw() {
	if (editing_stage_ == NONE) {
		View::draw();

	} else {
		// Ignore the cleaning part
		render();
 
		// XXX Don't understand why clip's height and width need to 
		// increase 3 to draw tagged objects correctly. 
		XCopyArea(Tk_Display(tk_), offscreen_, Tk_WindowId(tk_), 
		          background_,(int)clip_.xmin, (int)clip_.ymin, 
		          (int)clip_.width()+3, (int)clip_.height()+3, 
		          (int)clip_.xmin, (int)clip_.ymin);
	}
}



//----------------------------------------------------------------------
// void EditView::draw(double current_time)
//----------------------------------------------------------------------
void EditView::draw(double current_time) {
	model_->update(current_time);
}

//----------------------------------------------------------------------
//----------------------------------------------------------------------
void EditView::xline(float x0, float y0, float x1, float y1, GC gc) {
  XDrawLine(Tk_Display(tk_), offscreen_, gc, (int) x0, (int) y0,
                                             (int) x1, (int) y1);
}

// Without transform.
void EditView::xrect(float x0, float y0, float x1, float y1, GC gc)
{
	int x = (int) floor(x0);
	int y = (int) floor(y0);
	int w = (int)(x1 - x0);
	if (w < 0) {
		x = (int) ceil(x1);
		w = -w;
	}
	int h = (int)(y1 - y0);
	if (h < 0) {
		h = -h;
		y = (int)ceil(y1);
	}
	XDrawRectangle(Tk_Display(tk_), offscreen_, gc, x, y, w, h);
}

void EditView::line(float x0, float y0, float x1, float y1, int color)
{
	if (editing_stage_ != NONE)
		View::line(x0, y0, x1, y1, Paint::instance()->Xor());
	else 
		View::line(x0, y0, x1, y1, color);
}

void EditView::rect(float x0, float y0, float x1, float y1, int color)
{
	if (editing_stage_ != NONE)
		View::rect(x0, y0, x1, y1, Paint::instance()->Xor());
	else 
		View::rect(x0, y0, x1, y1, color);
}

void EditView::polygon(const float* x, const float* y, int n, int color)
{
	if (editing_stage_ != NONE)
		View::polygon(x, y, n, Paint::instance()->Xor());
	else 
		View::polygon(x, y, n, color);
}

void EditView::fill(const float* x, const float* y, int n, int color)
{
	if (editing_stage_ != NONE)
		View::fill(x, y, n, Paint::instance()->Xor());
	else 
		View::fill(x, y, n, color);
}

void EditView::circle(float x, float y, float r, int color)
{
	if (editing_stage_ != NONE)
		View::circle(x, y, r, Paint::instance()->Xor());
	else 
		View::circle(x, y, r, color);
}

// Do not display any string, because no xor font gc
void EditView::string(float fx, float fy, float dim, const char* s, int anchor)
{
	if (editing_stage_ == NONE)
		View::string(fx, fy, dim, s, anchor);
}

//----------------------------------------------------------------------
// void
// EditView::BoundingBox(BBox &bb)
//   - This copies the area in which an animation drawn may be drawn
//     into (clipping area) the destination bb.  
//----------------------------------------------------------------------
void
EditView::BoundingBox(BBox &bb) {
  double temp;
  
  // Calculate the world coordinates for the view's canvas
  matrix_.imap(0.0, 0.0, bb.xmin, bb.ymin);
  matrix_.imap(width_, height_, bb.xmax, bb.ymax);

  // Check to make sure xmin, ymin is the lower left corner
  // and xmax, ymax is the upper right
  if (bb.xmin > bb.xmax) {
    temp = bb.xmax;
    bb.xmax = bb.xmin;
    bb.xmin = temp;
  }
  if (bb.ymin > bb.ymax) {
    temp = bb.ymax;
    bb.ymax = bb.ymin;
    bb.ymin = temp;
  }
}

void
EditView::getWorldBox(BBox &bb) {
  model_->BoundingBox(bb);
}

//----------------------------------------------------------------------
// void 
// EditView::render()
//   - not sure why this is called render but it seems to take care of 
//     rubberband selections and moving a selection on the screen
//   - I believe the real "rendering" is done in model_->render()
//     which is of type NetModel.  -- mehringe@isi.edu
//
//----------------------------------------------------------------------
void
EditView::render() {
  // Here we can compute the clipping box for render
  Paint *paint = Paint::instance();
  GC gc = paint->paint_to_gc(paint->Xor());

  switch (editing_stage_) {
    case START_RUBBERBAND:
      // draw rubber band
      xrect(rb_.xmin, rb_.ymin, rb_.xmax, rb_.ymax, gc);
      break;

    case MOVE_RUBBERBAND: 
      // erase previous rubberband
      xrect(rb_.xmin, rb_.ymin, oldx_, oldy_, gc);
      // draw new rubberband
      xrect(rb_.xmin, rb_.ymin, rb_.xmax, rb_.ymax, gc);
      break;

    case END_RUBBERBAND: 
      // erase previous rubber band
      xrect(rb_.xmin, rb_.ymin, oldx_, oldy_, gc);
      // XXX Should draw the tag?
      model_->render(this);
      editing_stage_ = NONE;
      break;

    case START_OBJECT:
      xrect(rb_.xmin, rb_.ymin, rb_.xmax, rb_.ymax, gc);
      // xor-draw all relevant objects
      defTag_->draw(this, model_->now());
      break;

    case MOVE_OBJECT: 
      // erase old positions first.
      if ((oldx_ == rb_.xmax) && (oldy_ == rb_.ymax)) 
        return;
      defTag_->draw(this, model_->now());
      // move these objects
      defTag_->move(this, rb_.xmax - oldx_, rb_.ymax - oldy_);
      BBox bb;
      bb.clear();
      defTag_->merge(bb);
      matrix_.imap(bb.xmin, bb.ymin);
      matrix_.imap(bb.xmax, bb.ymax);
      bb.adjust();
      clip_.merge(bb);
      defTag_->draw(this, model_->now());
      break;

    case END_OBJECT:
      // Erase old positions
      defTag_->draw(this, model_->now());
      // At least we should redo scale estimation and 
      // place everything
      defTag_->move(this, rb_.xmax - oldx_, rb_.ymax - oldy_);
      model_->recalc();
      model_->render(this);
      editing_stage_ = NONE;
      break;

    case START_LINK:
      line(link_start_x_, link_start_y_, link_end_x_, link_end_y_, 3);
      defTag_->draw(this, model_->now());
      break;

    case MOVE_LINK:
      // erase previous link
      xline(rb_.xmin, rb_.ymin, oldx_, oldy_, gc);
      // draw new rubberband
      xline(rb_.xmin, rb_.ymin, rb_.xmax, rb_.ymax, gc);
      break;

    case END_LINK:
      // erase previous link
      xline(rb_.xmin, rb_.ymin, oldx_, oldy_, gc);
      // XXX Should draw the tag?
      model_->render(this);
      editing_stage_ = NONE;
      break;

    default:
      // redraw model
      model_->render(this);
      break;
  }
  return;
}