summaryrefslogtreecommitdiffstats
path: root/kbackgammon/kbgboard.cpp
blob: 8382dec344aa102c1e6664d7a9f6bf3e30fbedc5 (plain)
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
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
/* Yo Emacs, this -*- C++ -*-

  Copyright (C) 1999-2001 Jens Hoefkens
  jens@hoefkens.com

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

/*

  This file contains the implementation of the KBgBoard class and
  all related utility classes.

  Effort has been made to keep this class general. Please comment on that
  if you want to use it in your own project.

*/

#include <kapplication.h>

#include "kbgboard.h"
#include "kbgboard.moc"

#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <kcolordialog.h>
#include <klocale.h>
#include <tqlayout.h>
#include <tqgroupbox.h>
#include <tqbuttongroup.h>
#include <tdeconfig.h>
#include <tqwhatsthis.h>
#include <tqvbox.h>
#include <kiconloader.h>
#include <ktabctl.h>
#include <kpushbutton.h>
#include <kstdguiitem.h>

#include "version.h"


const int CUBE_UPPER = 3;
const int CUBE_LOWER = 4;

static const int MINIMUM_CHECKER_SIZE = 10;

/*
 * Set the default settings in all user configurations
 */
void KBgBoardSetup::setupDefault()
{
	// default background color
	setBackgroundColor(TQColor(200, 200, 166));
	pbc_1->setPalette(TQPalette(backgroundColor()));

	// checker colors
	baseColors[0] = black;
	baseColors[1] = white;
	pbc_2->setPalette(TQPalette(baseColors[0]));
	pbc_3->setPalette(TQPalette(baseColors[1]));

	// default font
	setFont(TQFont("Serif", 18, TQFont::Normal));
	kf->setFont(getFont());

	// short moves
	setShortMoveMode(SHORT_MOVE_DOUBLE);
	for (int i = 0; i < 3; i++)
		rbMove[i]->setChecked(i == SHORT_MOVE_DOUBLE);

	// pip count
	cbp->setChecked(computePipCount = true);
}

/*
 * User committed the changes. Save them.
 */
void KBgBoardSetup::setupOk()
{
	// font selection
	setFont(kf->font());

	// move strategy
	for (int i = 0; i < 3; i++)
		if (rbMove[i]->isChecked()) setShortMoveMode(i);

	// pipcount
	computePipCount = cbp->isChecked();
}

/*
 * User cancelled the changes. Undo the color changes that become
 * visible right away.
 */
void KBgBoardSetup::setupCancel()
{
	// undo background color change
	setBackgroundColor(saveBackgroundColor);

	// undo checker color changes
	baseColors[0] = saveBaseColors[0];
	baseColors[1] = saveBaseColors[1];

	for (int i = 0; i < 30; i++)
		cells[i]->update();
}

/*
 * Fills configuration page in the dialog nb
 */
void KBgBoardSetup::getSetupPages(KDialogBase *nb)
{
	/*
	 * Main Widget
	 * ===========
	 */
	TQVBox *vbp = nb->addVBoxPage(i18n("Board"), i18n("Here you can configure the backgammon board"),
				     kapp->iconLoader()->loadIcon(PROG_NAME, TDEIcon::Desktop));

	/*
	 * Need more than one page
	 */
	KTabCtl *tc = new KTabCtl(vbp, "board tabs");

	TQWidget *w = new TQWidget(tc);
	TQGridLayout *gl = new TQGridLayout(w, 3, 1, nb->spacingHint());

	/*
	 * Group boxes
	 * ===========
	 */
	TQGroupBox    *ga = new TQGroupBox(w);
	TQButtonGroup *gm = new TQButtonGroup(w);
	TQGroupBox    *go = new TQGroupBox(w);

	ga->setTitle(i18n("Colors"));
	gm->setTitle(i18n("Short Moves"));
	go->setTitle(i18n("Options"));

	gl->addWidget(ga, 0, 0);
	gl->addWidget(gm, 1, 0);
	gl->addWidget(go, 2, 0);

	/*
	 * Appearance group
	 * ----------------
	 */
	TQGridLayout *blc = new TQGridLayout(ga, 2, 2, 20);

	pbc_1 = new TQPushButton(i18n("Background"), ga);
	pbc_1->setPalette(TQPalette(backgroundColor()));

	pbc_2 = new TQPushButton(i18n("Color 1"), ga);
	pbc_2->setPalette(TQPalette(baseColors[0]));

	pbc_3 = new TQPushButton(i18n("Color 2"), ga);
	pbc_3->setPalette(TQPalette(baseColors[1]));

	blc->addWidget(pbc_2, 0, 0);
	blc->addWidget(pbc_3, 0, 1);
	blc->addMultiCellWidget(pbc_1, 1, 1, 0, 1);

	connect(pbc_1, TQT_SIGNAL(clicked()), this, TQT_SLOT(selectBackgroundColor()));
	connect(pbc_2, TQT_SIGNAL(clicked()), this, TQT_SLOT(selectBaseColorOne()));
	connect(pbc_3, TQT_SIGNAL(clicked()), this, TQT_SLOT(selectBaseColorTwo()));

	/*
	 * Moving style
	 * ------------
	 */
	TQBoxLayout *blm = new TQVBoxLayout(gm, nb->spacingHint());

	blm->addSpacing(gm->fontMetrics().height());

	for (int i = 0; i < 3; i++)
		rbMove[i] = new TQRadioButton(gm);

	rbMove[SHORT_MOVE_NONE]->setText(i18n("&Disable short moves. Only drag and drop will move."));
	rbMove[SHORT_MOVE_SINGLE]->setText(i18n("&Single clicks with the left mouse button will\n"
			  "move a checker the shortest possible distance."));
	rbMove[SHORT_MOVE_DOUBLE]->setText(i18n("D&ouble clicks with the left mouse button will\n"
			  "move a checker the shortest possible distance."));

	for (int i = 0; i < 3; i++) {
		rbMove[i]->setMinimumSize(rbMove[i]->sizeHint());
		blm->addWidget(rbMove[i]);
		rbMove[i]->setChecked(i == getShortMoveMode());
	}

	/*
	 * Other options
	 * -------------
	 */
	TQGridLayout *glo = new TQGridLayout(go, 1, 1, 20);

	cbp = new TQCheckBox(i18n("Show pip count in title bar"), go);
	cbp->setChecked(computePipCount);
	cbp->adjustSize();
	cbp->setMinimumSize(cbp->size());

	glo->addRowSpacing(0, cbp->height());
	glo->addWidget(cbp, 0, 0);

	gl->activate();

	w->adjustSize();
	w->setMinimumSize(w->size());

	tc->addTab(w, i18n("&Board"));

	/*
	 * Save current settings
	 * ---------------------
	 */
	saveBackgroundColor = backgroundColor();
	saveBaseColors[0]   = baseColors[0];
	saveBaseColors[1]   = baseColors[1];

	/*
	 * Font selection page
	 * ===================
	 */
	w = new TQWidget(tc);
	kf = new TDEFontChooser(w);
	kf->setFont(getFont());
	gl = new TQGridLayout(w, 1, 1, nb->spacingHint());
	gl->addWidget(kf, 0, 0);
	gl->activate();
	w->adjustSize();
	w->setMinimumSize(w->size());
	tc->addTab(w, i18n("&Font"));
}

/*
 * Empty constructor calls the board constructor
 */
KBgBoardSetup::KBgBoardSetup(TQWidget *parent, const char *name, TQPopupMenu *menu)
	: KBgBoard(parent, name, menu)
{
	// empty
}

/*
 * User changed first checker color
 */
void KBgBoardSetup::selectBaseColorOne()
{
	KColorDialog *c = new KColorDialog(this, "base-col-1", true);
	c->setColor(baseColors[0]);
	if (c->exec()) {
		baseColors[0] = c->color();
		pbc_2->setPalette(TQPalette(baseColors[0]));
		for (int i = 0; i < 30; i++)
			cells[i]->update();
	}
	delete c;
}

/*
 * User changed second checker color
 */
void KBgBoardSetup::selectBaseColorTwo()
{
	KColorDialog *c = new KColorDialog(this, "base-col-2", true);
	c->setColor(baseColors[1]);
	if (c->exec()) {
		baseColors[1] = c->color();
		pbc_3->setPalette(TQPalette(baseColors[1]));
		for (int i = 0; i < 30; i++)
			cells[i]->update();
	}
	delete c;
}

/*
 * User changed background color
 */
void KBgBoardSetup::selectBackgroundColor()
{
	KColorDialog *c = new KColorDialog(this, "bg-col", true);
	c->setColor(backgroundColor());
	if (c->exec()) {
		setBackgroundColor(c->color());
		pbc_1->setPalette(TQPalette(backgroundColor()));
		for (int i = 0; i < 30; i++)
			cells[i]->update();
	}
	delete c;
}

/*
 * Saves the persistent settings of the board
 */
void KBgBoard::saveConfig()
{
	TDEConfig* config = kapp->config();
	config->setGroup(name());

	config->writeEntry("bgcolor", backgroundColor());
	config->writeEntry("color-1", baseColors[0]);
	config->writeEntry("color-2", baseColors[1]);
	config->writeEntry("font", getFont());
	config->writeEntry("move", getShortMoveMode());
	config->writeEntry("pip", computePipCount);
}

/*
 * Restore the settings or use reasonable defaults
 */
void KBgBoard::readConfig()
{
	TQColor col(200, 200, 166);
	TQFont fon("Serif", 18, TQFont::Normal);

	TDEConfig* config = kapp->config();
	config->setGroup(name());

	setBackgroundColor(config->readColorEntry("bgcolor", &col));
	baseColors[0] = config->readColorEntry("color-1", &black);
	baseColors[1] = config->readColorEntry("color-2", &white);
	setFont(config->readFontEntry("font", &fon));
	setShortMoveMode(config->readNumEntry("move", SHORT_MOVE_DOUBLE));
	computePipCount = config->readBoolEntry("pip", true);
}

/*
 * Get the font the board cells should use for the display of
 * numbers and cube value.
 */
TQFont KBgBoard::getFont() const
{
	return boardFont;
}

/*
 * Allows the users of the board classe to set the font to be used
 * on the board. Note that the fontsize is dynamically set
 */
void KBgBoard::setFont(const TQFont& f)
{
	boardFont = f;
}

/*
 * Ask the user for an updated cube value
 */
void KBgBoard::queryCube()
{
	KBgStatus *st = new KBgStatus();
	getState(st);
	KBgBoardQCube *dlg =
		new KBgBoardQCube(abs(st->cube()), (st->cube(US) > 0), (st->cube(THEM) > 0));
	if (dlg->exec()) {
		bool u = ((dlg->getCubeValue() == 0) || (dlg->getCubeOwner() == US  ));
		bool t = ((dlg->getCubeValue() == 0) || (dlg->getCubeOwner() == THEM));
		st->setCube((int)rint(pow(2.0, dlg->getCubeValue())), u, t);
		setState(*st); // JENS
	}
	delete dlg;
	delete st;
}

/*
 * Constructor, creates the dialog but does not show nor execute it.
 */
KBgBoardQCube::KBgBoardQCube(int val, bool us, bool them)
	: TQDialog(0, 0, true)
{
	setCaption(i18n("Set Cube Values"));

	TQBoxLayout *vbox = new TQVBoxLayout(this, 17);

	TQLabel *info = new TQLabel(this);

	cb[0]  = new TQComboBox(this, "first sb");
	cb[1]  = new TQComboBox(this, "second sb");
	ok     = new KPushButton(KStdGuiItem::ok(), this);
	cancel = new KPushButton(KStdGuiItem::cancel(), this);

	info->setText(i18n("Set the face value of the cube and select who should be able to\n"
			   "double. Note that a face value of 1 automatically allows both\n"
			   "players to double."));

	info->setMinimumSize(info->sizeHint());

	vbox->addWidget(info, 0);

	TQBoxLayout *hbox_1 = new TQHBoxLayout();
	TQBoxLayout *hbox_2 = new TQHBoxLayout();

	vbox->addLayout(hbox_1);
	vbox->addLayout(hbox_2);

	hbox_1->addWidget(cb[1]);
	hbox_1->addWidget(cb[0]);

	hbox_2->addWidget(ok);
	hbox_2->addWidget(cancel);

	cb[0]->insertItem(" 1", 0);
	cb[0]->insertItem(" 2", 1);
	cb[0]->insertItem(" 4", 2);
	cb[0]->insertItem(" 8", 3);
	cb[0]->insertItem("16", 4);
	cb[0]->insertItem("32", 5);
	cb[0]->insertItem("64", 6);

	switch(val) {
	case  1:
		cb[0]->setCurrentItem(0);
		break;
	case  2:
		cb[0]->setCurrentItem(1);
		break;
	case  4:
		cb[0]->setCurrentItem(2);
		break;
	case  8:
		cb[0]->setCurrentItem(3);
		break;
	case 16:
		cb[0]->setCurrentItem(4);
		break;
	case 32:
		cb[0]->setCurrentItem(5);
		break;
	case 64:
		cb[0]->setCurrentItem(6);
		break;
	}

	cb[1]->insertItem(i18n("Lower Player"), US);
	cb[1]->insertItem(i18n("Upper Player"), THEM);
	cb[1]->insertItem(i18n("Open Cube"), BOTH);

	if (us && them)
		cb[1]->setCurrentItem(BOTH);
	else if (us)
		cb[1]->setCurrentItem(US);
	else if (them)
		cb[1]->setCurrentItem(THEM);

	cb[0]->setMinimumSize(cb[0]->sizeHint());
	cb[1]->setMinimumSize(cb[1]->sizeHint());

	ok->setMinimumSize(ok->sizeHint());
	cancel->setMinimumSize(cancel->sizeHint());

	setMinimumSize(childrenRect().size());

	vbox->activate();

	resize(minimumSize());

	ok->setAutoDefault (true);
	ok->setDefault(true);

	cb[0]->setFocus();

	connect(ok,     TQT_SIGNAL(clicked()), TQT_SLOT(accept()));
	connect(cancel, TQT_SIGNAL(clicked()), TQT_SLOT(reject()));

	connect(cb[0],  TQT_SIGNAL(activated(int)), TQT_SLOT(changePlayer(int)));
	connect(cb[1],  TQT_SIGNAL(activated(int)), TQT_SLOT(changeValue (int)));
}

/*
 * Deconstructor, empty.
 */
KBgBoardQCube::~KBgBoardQCube()
{
	// nothing
}

/*
 * Get the face value of the cube
 */
int KBgBoardQCube::getCubeValue()
{
	return cb[0]->currentItem();
}

/*
 * Get the owner of the cube
 */
int KBgBoardQCube::getCubeOwner()
{
	return cb[1]->currentItem();
}

/*
 * If the cube is open, the value can only be 1
 */
void KBgBoardQCube::changeValue(int player)
{
	if (player == BOTH)
		cb[0]->setCurrentItem(0);

}

/*
 * If the value is 1, the cube has to be open; and if the value
 * becomes bigger than 1, the player cannot stay open.
 */
void KBgBoardQCube::changePlayer(int val)
{
	if (val == 0)
		cb[1]->setCurrentItem(BOTH);
	else if (cb[1]->currentItem() == BOTH)
		cb[1]->setCurrentItem(US);
}

/*
 * Constructor, creates the dialog but does not show nor execute it.
 */
KBgBoardQDice::KBgBoardQDice(const char *name)
	: TQDialog(0, name, true)
{
	setCaption(i18n("Set Dice Values"));

	TQBoxLayout *vbox = new TQVBoxLayout(this, 17);

	TQLabel *info = new TQLabel(this);

	sb[0]  = new TQSpinBox(this, "first sb");
	sb[1]  = new TQSpinBox(this, "second sb");
	ok     = new KPushButton(KStdGuiItem::ok(), this);
	cancel = new KPushButton(KStdGuiItem::cancel(), this);

	info->setText(i18n("Set the face values of the selected dice. The other player's\n"
			   "dice will be cleared and it will be the dice's owner's turn."));

	info->setMinimumSize(info->sizeHint());

	vbox->addWidget(info, 0);

	TQBoxLayout *hbox_1 = new TQHBoxLayout();
	TQBoxLayout *hbox_2 = new TQHBoxLayout();

	vbox->addLayout(hbox_1);
	vbox->addLayout(hbox_2);

	hbox_1->addWidget(sb[0]);
	hbox_1->addWidget(sb[1]);

	hbox_2->addWidget(ok);
	hbox_2->addWidget(cancel);

	sb[0]->setMinimumSize(sb[0]->sizeHint());
	sb[1]->setMinimumSize(sb[1]->sizeHint());

	ok->setMinimumSize(ok->sizeHint());
	cancel->setMinimumSize(cancel->sizeHint());

	setMinimumSize(childrenRect().size());

	vbox->activate();

	resize(minimumSize());

	ok->setAutoDefault (true);
	ok->setDefault(true);

	sb[0]->setFocus();

	connect(ok,     TQT_SIGNAL(clicked()), TQT_SLOT(accept()));
	connect(cancel, TQT_SIGNAL(clicked()), TQT_SLOT(reject()));

	sb[0]->setValue(1);
	sb[1]->setValue(1);

	sb[0]->setRange(1, 6);
	sb[1]->setRange(1, 6);
}

/*
 * Deconstructor, empty.
 */
KBgBoardQDice::~KBgBoardQDice()
{
	// nothing
}

/*
 * Get the face value of the dice
 */
int KBgBoardQDice::getDice(int n)
{
	return sb[n]->value();
}

/*
 * Allows for overriding the current turn color in edit mode.
 */
void KBgBoard::storeTurn(const int pcs)
{
	storedTurn = ((pcs > 0) ? +1 : -1);
}

/*
 * Switch edit mode on/off
 */
void KBgBoard::setEditMode(const bool m)
{
	editMode = m;
}

/*
 * Retrurns the current edit mode status.
 */
bool KBgBoard::getEditMode() const
{
	return editMode;
}

/*
 * This function takes a KBgStatus object and fills it with the current
 * board status.
 */
KBgStatus* KBgBoard::getState(KBgStatus *st) const
{
	st->setColor(color);
	st->setDirection(direction);

	st->setCube(cube, maydouble[US], maydouble[THEM]);

	st->setBar(US, onbar[US]); st->setBar(THEM, onbar[THEM]);
	st->setHome(US, onhome[US]); st->setHome(THEM, onhome[THEM]);

	st->setDice(US, 0, dice[US][0]);
	st->setDice(US, 1, dice[US][1]);

	st->setDice(THEM, 0, dice[THEM][0]);
	st->setDice(THEM, 1, dice[THEM][1]);

	for (int i = 1; i < 25; ++i)
		st->setBoard(i, ((color*board[i] < 0) ? THEM : US), abs(board[i]));

	return st;
}

/*
 * This function lets external users change the context menu
 */
void KBgBoard::setContextMenu(TQPopupMenu *menu)
{
	contextMenu = menu;
}

/*
 * This function prints all moves up to now in the extended FIBS command
 * notation (that is moves that involved kicking have a "+" instead of "-".
 */
void KBgBoard::sendMove()
{
	if (getEditMode())
		return;

	TQString s, t;

	s.setNum(moveHistory.count());
	s += " ";

	TQPtrListIterator<KBgBoardMove> it(moveHistory);
	for (; it.current(); ++it) {
		KBgBoardMove *move = it.current();
		if (move->source() == BAR_US || move->source() == BAR_THEM ) {
			s += "bar";
		} else {
			t.setNum(move->source());
			s += t;
		}
		if (move->wasKicked())
			s += "+";
		else
		        s += "-";

		if ((move->destination() != HOME_THEM_LEFT) && (move->destination() != HOME_THEM_RIGHT) &&
		    (move->destination() != HOME_US_LEFT  ) && (move->destination() != HOME_US_RIGHT )) {
			t.setNum(move->destination());
			s += t;
		} else {
			s += "off";
		}
		s += " ";
	}
	emit currentMove(&s);
}

/*
 * This is overloaded from TQWidget, since it has to pass the new
 * background color to the child widgets (the cells).
 */
void KBgBoard::setBackgroundColor(const TQColor &col)
{
	if (col != backgroundColor()) {
		TQWidget::setBackgroundColor(col);
		for( int i = 0; i < 30; ++i)
			cells[i]->setBackgroundColor(col);
	}
}

/*
 * Overloaded from TQWidget since we have to resize all cells
 */
void KBgBoard::resizeEvent(TQResizeEvent *)
{
	int xo0 = 0;
	int xo1, w;
	int hu = height()/2;
	int hl = height() - hu;

        checkerDiam = (int)((width()/15-2)<(height()/10.0-2) ?
			    (width()/15-2) : (height()/10.0-2));

	if (checkerDiam < MINIMUM_CHECKER_SIZE) 
		checkerDiam = MINIMUM_CHECKER_SIZE;

	for (int i = 0; i < 14; ++i) {
		xo1  = int((i+1)*width()/15.0);
		w = xo1 - xo0;
		cells[i   ]->setGeometry(xo0,  0, w, hu);
		cells[i+15]->setGeometry(xo0, hu, w, hl);
		xo0 = xo1;
	}
	cells[14]->setGeometry(xo0,  0, width() - xo0, hu);
	cells[29]->setGeometry(xo0, hu, width() - xo0, hl);
}

/*
 * This function draws the whole board in black and white on the
 * painter *p. It is very well suited for printing on paper.
 * It scales the output according to the width of the widget.
 * I.e. if the widget is insanely long (y-direction) this will look
 * shitty. The upper 20% of the painter are not used. So the caller
 * can print whatever she/he wants above the 0.2*p->viewport().height()
 * margin (like game status information).
 */
void KBgBoard::print(TQPainter *p)
{
	double sf = 0.8*p->viewport().width()/width();
	int xo = int((p->viewport().width() - sf*width())/2);
	int yo = int(0.2*p->viewport().height());
	int hu = height()/2;

	int xo0 = 0;
	for (int i = 0; i < 15; ++i) {
		cells[i   ]->paintCell(p, xo+sf*xo0, yo          , sf);
		cells[i+15]->paintCell(p, xo+sf*xo0, yo+sf*(hu-1), sf);
		xo0 = int((i+1)*width()/15.0);
	}
}

/*
 * This function returns the selected drawing color for a checker
 * of the given sign(!). I.e. we distinguish checkers by whether
 * they are negative or positive.
 */
TQColor KBgBoard::getCheckerColor(int p) const
{
	return ((p < 0) ? baseColors[0] : baseColors[1]);
}

/*
 * This small utility function returns the y-coordinate base
 * of a checker. This is the offset in the y-coordinate at
 * which we have toposition the upper corner of the first
 * checker so that it is fully in the cell.
 */
int KBgBoardField::numberBase() const
{
	return (cellID < 13) ? 0 : height()-20;
}

/*
 * This function computes the proper diameter for checkers on this cell.
 * It tries to stay within the horizontal boundaries and adjusts the
 * diameter in such a way that 5 checkers fit on top of each other and
 * there is still some room for stacked checkers.
 */
int KBgBoardCell::getCheckerDiameter() const
{
	return board->checkerDiam;
}

/*
 * Draws the cells content using the painter p.
 * Reimplemented from TQLabel.
 */
void KBgBoardCell::drawContents(TQPainter *)
{
	TQRect cr(0, 0, width(), height());
	cr.moveBottomLeft(rect().bottomLeft());
	TQPixmap  pix(cr.size());
	TQPainter tmp;
	pix.fill(this, cr.topLeft());
	tmp.begin(&pix);
	paintCell(&tmp);
	tmp.end();
	bitBlt(this, 0, 0, &pix);
	/*
	 * New state is now current.
	 * This avoids unnecessary redrawings.
	 */
	stateChanged = false;
}

/*
 * This does the absolute bare minimum of painting a cell. It draws a small
 * horizontal black line that marks the outer boundary of the cell and all
 * overloaded paintCell() member are supposed to call this one after(!) they
 * have painted themselves.
 */
void KBgBoardCell::paintCell(TQPainter *p, int xo, int yo, double sf) const
{
	int x1 = xo; int x2 = xo;
	int y1 = yo; int y2 = yo;

	if ((cellID==HOME_THEM_LEFT || cellID==BAR_THEM) ||
	    (cellID<13 && cellID>0)) {
		x2 += int(sf*width());
	} else if ((cellID==HOME_US_LEFT || cellID==BAR_US) ||
		   (cellID<25 && cellID>12)) {
		x2 += int(sf*width());
		y1 = y2 += int(sf*(height()-1));
	} else if (cellID == HOME_THEM_RIGHT) {
		x2 += int(sf*(width()-1));
	} else if (cellID == HOME_US_RIGHT) {
		x2 += int(sf*(width()-1));
		y1 = y2 += int(sf*(height()-1));
	} else {
		return; // do nothing if the cellID is wrong
	}

	// draw line in black
	p->setBrush( black );
	p->setPen( black );
	p->drawLine(x1, y1, x2, y2);
}

/*
 * This function draws vertical boundaries around a cell. This is used
 * for bars and homes to get them separated from the rest of the board.
 */
void
KBgBoardCell::drawVertBorder(TQPainter *p, int xo, int yo, double sf) const
{
	p->setBrush(black);
	p->setPen(black);
	p->drawLine(xo,                yo, xo,                yo+sf*(height()-1));
	p->drawLine(xo+sf*(width()-1), yo, xo+sf*(width()-1), yo+sf*(height()-1));
}

/*
 * This function draws the content of the homes on the painter *p. It
 * starts at the upper left corner (xo, yo) and uses the scaling factor
 * sf.
 */
void KBgBoardHome::paintCell(TQPainter *p, int xo, int yo, double sf) const
{
	/*
	 * Only these homes contain checkers. The other ones contains dice and cube.
	 */
	if (((cellID == HOME_THEM_LEFT ) && (direction > 0)) ||
	    ((cellID == HOME_THEM_RIGHT) && (direction < 0)) ||
	    ((cellID == HOME_US_LEFT   ) && (direction > 0)) ||
	    ((cellID == HOME_US_RIGHT  ) && (direction < 0))) {

		drawOverlappingCheckers(p, xo, yo, sf);

	} else {

		drawDiceAndCube(p, ((cellID == HOME_THEM_LEFT ||
				     cellID == HOME_THEM_RIGHT) ?
				    THEM : US), xo, yo, sf);

	}

	/*
	 * Finally draw the boundaries
	 */
	drawVertBorder(p, xo, yo, sf);
	KBgBoardCell::paintCell(p, xo, yo, sf);
}

/*
 * This function draws the content of the bar cells. Bars may contain
 * checkers and the cube. Please read the comments in the code on how
 * and why the checkers and (especially) the cube is printed.
 */
void KBgBoardBar::paintCell(TQPainter *p, int xo, int yo, double sf) const
{
	/*
	 * Put in the checkers.
	 */
	drawOverlappingCheckers(p, xo, yo, sf);

	/*
	 * Now comes a slightly tricky part: the cube belongs in the center
	 * of the board if nobody has doubled yet. In the way we do the board
	 * the center belongs to two(!) fields - both bars.
	 *
	 * If we are not printing on paper we use the fact that
	 * TQt will clip the drawing for us. So we print the upper
	 * half of the cube and the lower half on different cells.
	 *
	 * Since there is no such thing as clipping when we print
	 * on paper we can only print one cube. It turns out that
	 * the lower one is sufficiently centered.
	 */
	if (board->canDouble(US) &&
	    board->canDouble(THEM) &&
	    !(abs(xo)+abs(yo) > 0 && cellID == BAR_THEM)) {

		drawCube(p, cellID == BAR_THEM ? CUBE_UPPER :
			 CUBE_LOWER, xo, yo, sf);

	}

	/*
	 * Finally draw the boundaries
	 */
	drawVertBorder(p, xo, yo, sf);
       	KBgBoardCell::paintCell(p, xo, yo, sf);
}


/*
 * This function draws a cube on the painetr p. The cube will be drawn in
 * the coundaries given by cubeRect(...). The other parameters are like
 * in the other functions.
 */
void KBgBoardCell::drawCube(TQPainter *p, int who, int xo, int yo,
				    double sf) const
{
	TQRect r = cubeRect(who, true, sf);
	r.moveTopLeft(TQPoint(xo+r.left(), yo+r.top()));

	p->setBrush(black);
	p->setPen(black);
	p->drawRoundRect(r, 20, 20);

	r = cubeRect(who, false, sf);
	r.moveTopLeft(TQPoint(xo+r.left(), yo+r.top()));

	p->setBrush(white);
	p->setPen(white);
	p->drawRoundRect(r, 20, 20);

	p->setBrush(black);
	p->setPen(black);

	TQString cubeNum;
	int v = board->getCube();
	/*
	 * Ensure that the cube shows 64 initially
	 */
	if (v == 1) v = 64;
	cubeNum.setNum(v);

	/*
	 * Adjust the font size
	 */
	TQFont f = board->getFont();
	f.setPointSizeFloat(0.75*f.pointSizeFloat());
	p->setFont(f);
	p->drawText(r, AlignCenter, cubeNum);
}

/*
 * This function returns a boundary rectangle for the dice. It does so for both
 * dice (i is either 0 or 1). It can return big and small rectangles and everything
 * is scaled with a default value of 1.0. The scale parameter determines the the
 * size of the dice relative to the checker diameter.
 */
TQRect KBgBoardCell::diceRect(int i, bool big, double sf, double scale) const
{
	int d = int(scale*getCheckerDiameter());
	int l = (1+width())%2;
	int k = (big ? 0 : 1);
	return(TQRect(sf*(width()/2-d+k),
		     sf*(height()/2-2*d-3+2*i*(d+3)-1+k),
		     sf*(2*(d-k)+1-l),
		     sf*(2*(d-k)+1-l)));
}

/*
 * This function returns a bounding rectangle for the cube. This rectangle
 * is moved to the correct place and scaled correctly. The cube is slightly
 * smaller than the dice.
 */
TQRect KBgBoardCell::cubeRect(int who, bool big, double sf) const
{
	TQRect r = diceRect(0, big, sf, 0.40);

	int d = int(0.40*getCheckerDiameter());
	int h = r.height();
	int k = (big ? 1 : 0);

	switch (who) {
	case US:
		r.setTop(sf*(height() - 3*d) - k);
		break;
	case THEM:
		r.setTop(sf*d - k);
		break;
	case CUBE_UPPER:
		r.setTop(height()-d*sf - k);
		break;
	case CUBE_LOWER:
		r.setTop( -d*sf - k);
		break;
	default:
		return(TQRect(0,0,0,0));
	}
	r.setHeight(h);
	return r;
}

/*
 * This function draws the face value on a given dice painter.
 * If the painting of dice should be saved this is the place
 * to modify.
 */
void KBgBoardHome::drawDiceFace(TQPainter *p, int col, int num, int who,
					int xo, int yo, double sf) const
{
	p->setBrush(board->getCheckerColor(col));
	p->setPen(board->getCheckerColor(col));

	TQRect r = diceRect(num, false, sf);
	r.moveTopLeft(TQPoint(xo+r.left(), yo+r.top()));

	int cx  = r.width() /2;
	int cy  = r.height()/2;
	int cx2 = cx/2;
	int cy2 = cy/2;
	int cx7 = int(0.7*cx);
	int cy7 = int(0.7*cy);

	switch (board->getDice(who, num)) {
	case 5:
		p->drawEllipse(r.x()+cx-cx7  , r.y()+cy+cy7-1, 2, 2);
		p->drawEllipse(r.x()+cx+cx7-1, r.y()+cy-cy7  , 2, 2);
	case 3: // fall through
		p->drawEllipse(r.x()+cx-cx7  , r.y()+cy-cy7  , 2, 2);
		p->drawEllipse(r.x()+cx+cx7-1, r.y()+cy+cy7-1, 2, 2);
	case 1: // fall through
		p->drawEllipse(r.x()+cx      , r.y()+cy      , 2, 2);
		break;
	case 4:
		p->drawEllipse(r.x()+cx-cx2,   r.y()+cy+cy2-1, 2, 2);
		p->drawEllipse(r.x()+cx+cx2-1, r.y()+cy-cy2,   2, 2);
	case 2:  // fall through
		p->drawEllipse(r.x()+cx-cx2,   r.y()+cy-cy2,   2, 2);
		p->drawEllipse(r.x()+cx+cx2-1, r.y()+cy+cy2-1, 2, 2);
		break;
	case 6:
		p->drawEllipse(r.x()+cx-cx2,   r.y()+cy-cy7, 2, 2);
		p->drawEllipse(r.x()+cx-cx2,   r.y()+cy,     2, 2);
		p->drawEllipse(r.x()+cx-cx2,   r.y()+cy+cy7, 2, 2);
		p->drawEllipse(r.x()+cx+cx2-1, r.y()+cy-cy7, 2, 2);
		p->drawEllipse(r.x()+cx+cx2-1, r.y()+cy,     2, 2);
		p->drawEllipse(r.x()+cx+cx2-1, r.y()+cy+cy7, 2, 2);
		break;
	default: // nothing
		break;
	}
}

/*
 * This function draws a nice little square on the painter p.
 * The square is suited to contain a a face value as printed
 * by drawDiceFace(...).
 */
void KBgBoardHome::drawDiceFrame(TQPainter *p, int col, int num,
					 int xo, int yo, bool big, double sf) const
{
	p->setBrush(board->getCheckerColor(col));
	p->setPen(board->getCheckerColor(col));
	TQRect r = diceRect(num, big, sf);
	r.moveTopLeft(TQPoint(xo+r.left(), yo+r.top()));
	p->drawRoundRect(r, 20, 20);
}

/*
 * If the event is left button we just store that. If the event is right
 * button we ask the board to possibly display the popup menu.
 */
void KBgBoardCell::mousePressEvent(TQMouseEvent *e)
{
	if (e->button() == Qt::RightButton)
		board->showContextMenu();
	else
		mouseButton = e->button();
}

/*
 * This function sets the short move mode of the board.
 */
void KBgBoard::setShortMoveMode(int m)
{
	switch (m) {
	case SHORT_MOVE_NONE:
	case SHORT_MOVE_SINGLE:
		shortMoveMode = m;
		break;
	case SHORT_MOVE_DOUBLE:
	default:
		shortMoveMode = SHORT_MOVE_DOUBLE;
	}
}

/*
 * This function returns the currently selected short move mode.
 */
int KBgBoard::getShortMoveMode()
{
	return shortMoveMode;
}

/*
 * This function checks if (a) the mouse event was a left button,
 * (b) the parameter m equals the currently selected short move
 * mode and (c) t a short move from this field is possible. If all
 * tests are ok, the shortest possible move away from here is
 * made.
 */
void KBgBoardCell::checkAndMakeShortMove(TQMouseEvent *e, int m)
{
	if ((e->button() == Qt::LeftButton) &&
	    (board->getShortMoveMode() == m) &&
	    (dragPossible()) &&
	    (!board->getEditMode()))
		makeShortMove();
}

/*
 * This functions reacts on a double click.
 */
void KBgBoardCell::mouseDoubleClickEvent(TQMouseEvent *e)
{
	checkAndMakeShortMove(e, SHORT_MOVE_DOUBLE);
}

/*
 * This function reacts on a double click. Note that the bar knows
 * about two different double clicks: double the cube and make a
 * short move.
 */
void KBgBoardBar::mouseDoubleClickEvent(TQMouseEvent *e)
{
	TQRect r = cubeRect(cellID == BAR_THEM ? CUBE_UPPER : CUBE_LOWER, true);
	if (board->canDouble(US) &&
	    board->canDouble(THEM) && r.contains(e->pos())) {
		if (board->getEditMode())
			board->queryCube();
		else
			board->getDoubleCube(US);
		return;
	}
	checkAndMakeShortMove(e, SHORT_MOVE_DOUBLE);
}

/*
 * This is the destructor of the backgammon board. It frees
 * all resources previously allocated.
 */
KBgBoard::~KBgBoard()
{
	restoreCursor();
}

/*
 * This function draws dice and cube on the painter for a home cell.
 * who may be either US or THEM.
 */
void KBgBoardHome::drawDiceAndCube(TQPainter *p, int who, int xo, int yo,
					   double sf) const
{
 	int col = ((who == THEM) ? -color : color);

	/*
	 * draw the empty squares and then put the face value in there
	 */
	for (int i = 0; i < 2; i++) {
		drawDiceFrame(p,-col, i, xo, yo,  true, sf);
		drawDiceFrame(p, col, i, xo, yo, false, sf);
		drawDiceFace(p,-col, i, who, xo, yo, sf);
	}
	/*
	 * if necessary draw the cube
	 */
	if (board->canDouble(who) &&
	    !(board->canDouble(US) && board->canDouble(THEM)))
		drawCube(p, who, xo, yo, sf);
}

/*
 * This function determines whether a drag off this home is possible.
 * This is only possible if there are checkers and edit mode is on.
 */
bool KBgBoardHome::dragPossible() const
{
	if (board->getEditMode())
		return (pcs != 0);
	return false;
}

/*
 * This function determines whether a drag off this bar is possible.
 * It checks in the follwoing order: (1) owner of this bar is the one
 * whose turn it is now, (2) does the board allow moving right now is
 * it in read-only mode?
 */
bool KBgBoardBar::dragPossible() const
{
	if (board->getEditMode())
		return (pcs != 0);

	switch(board->getTurn()) {
	case US:
		if (pcs*color <= 0) return false;
		break;
	case THEM:
		if (pcs*color >= 0) return false;
		break;
	default:
		return false;
	}
	return board->movingAllowed();
}

/*
 * This function checks whether a checker can be moved away from
 * this field. It first checks whether the owner of this field is
 * the one whose turn to move it it, then it is checked whether
 * the players bar is empty and finally it is checked if the board
 * is in read-only mode.
 */
bool KBgBoardField::dragPossible() const
{
	if (board->getEditMode())
		return (pcs != 0);

	switch(board->getTurn()) {
	case US:
		if (pcs*color <= 0) return false;
		break;
	case THEM:
		if (pcs*color >= 0) return false;
		break;
	default:
		return false;
	}
	if (board->getOnBar(board->getTurn()))
		return false;
	return board->movingAllowed();
}

/*
 * This function returns the current read-write flag of the board.
 * If this returns true the board doesn't accept user input. If
 * allowmoving is true we will accept user events.
 */
bool KBgBoard::movingAllowed() const
{
	return allowmoving;
}

/*
 * This function sets the read-write or read-only flag of the
 * board. See also movingAllowed().
 */
void KBgBoard::allowMoving(const bool fl)
{
	allowmoving = fl;
}

/*
 * This function returns the current pip count of the player w.
 */
int KBgBoard::getPipCount(const int& w) const
{
	if (!computePipCount || (w != US && w != THEM))
		return -1;
	int pip = 25*abs(onbar[w]);
	int d = ((w == US) ? 1 : -1);
	for (int i = 1; i < 25; i++) {
		if (d*board[i]*color > 0)
			pip += ((d*direction < 0) ?
				i*abs(board[i]) :
				(25 - i)*abs(board[i]));
	}
	return pip;
}

/*
 * This function handles double clicks on homes. It will ignore
 * double clicks on the real home and only handle the ones on the
 * "other" home - the one with the dice. It will propagate the event
 * only if the the click happened within the boundaries of a
 * dice or the cube.
 */
void KBgBoardHome::mouseDoubleClickEvent(TQMouseEvent * e)
{
	if (e->button() != Qt::LeftButton)
		return;
	/*
	 * Check whether this is the bookkeeping home...
	 */
	if ((cellID == HOME_US_LEFT    && direction < 0) ||
	    (cellID == HOME_US_RIGHT   && direction > 0) ||
	    (cellID == HOME_THEM_LEFT  && direction < 0) ||
	    (cellID == HOME_THEM_RIGHT && direction > 0)) {

		int w = ((cellID == HOME_US_LEFT || cellID == HOME_US_RIGHT) ?
			 US : THEM);
		for (int i = 0; i < 2; ++i) {
			TQRect r = diceRect(i, true);
			if (r.contains(e->pos())) {
				if (board->getEditMode()) {

					KBgBoardQDice *dlg = new KBgBoardQDice();
					if (dlg->exec()) {
						KBgStatus *st = new KBgStatus();
						board->getState(st);
						st->setDice(w, 0, dlg->getDice(0));
						st->setDice(w, 1, dlg->getDice(1));
						st->setDice(((w == US) ? THEM : US), 0, 0);
						st->setDice(((w == US) ? THEM : US), 1, 0);
						board->setState(*st); // JENS
						delete st;
					}
					delete dlg;

				} else
					board->getRollDice(w);
				return;
			}
		}
		if (board->canDouble(w) &&
		    !(board->canDouble(US) && board->canDouble(THEM))) {
			TQRect r = cubeRect(w, true);
			if (r.contains(e->pos()))
				if (board->getEditMode())
					board->queryCube();
				else
					board->getDoubleCube(w);
		}
	}
}

/*
 * This function determines if a checker can be dropped on this field.
 * It checks whether the field is already owned, empty or contains
 * only one opponents piece. Then the dice are checked.
 */
bool KBgBoardField::dropPossible(int fromCellID, int newColor)
{
	if ((newColor*pcs > 0) || (pcs == 0) || (abs(pcs) == 1))
		// editMode is checked in diceAllowMove(...)
		return board->diceAllowMove(fromCellID, cellID);
	return false;
}

/*
 * This function determines if a checker can be dropped on this field.
 * Drops on the bar are never possible.
 */
bool KBgBoardBar::dropPossible(int fromCellID, int newColor)
{
	if (!board->getEditMode())
		return false;

	if (newColor*pcs > 0)
		return true;
	if ((cellID == BAR_US) && (board->getTurn() == US))
		return true;
	if ((cellID == BAR_THEM) && (board->getTurn() == THEM))
		return true;

	return (fromCellID == -12345); // always false
}

/*
 * This function checks if the current player can move a checker off.
 * Check if we can move a piece off. This obviously only works if there
 * are no pieces on the bar and all remaining pieces are in the home
 * board. This does not check the dice and it doesn't work for multiple
 * moves that start outside the home.
 */
bool KBgBoard::moveOffPossible() const
{
	if (getEditMode())
		return true;

	int w = getTurn();
	int d = ((w == THEM) ? -1 : 1);
	if (onbar[w] == 0 && d*direction > 0) {
		for (int i = 1; i < 19; ++i) {
			if (d*color*board[i] > 0) return false;
		}
		return true;

	} else if (onbar[w] == 0 && d*direction < 0) {
		for (int i = 24; i > 6; --i) {
			if (d*color*board[i] > 0) return false;
		}
		return true;
	}
	return false;
}

/*
 * This function tries to determine the field cell under the point p.
 * The point needs to be in board coordinates and the function returns
 * a pointer to the cell or NULL if there is no cell under the point.
 */

KBgBoardCell* KBgBoard::getCellByPos(const TQPoint& p) const
{
       	for (int i = 0; i < 30; ++i) {
		if (TQT_TQRECT_OBJECT(cells[i]->rect()).contains(cells[i]->mapFromParent(p)))
			return cells[i];
	}
	return NULL;
}

/*
 * This function takes a board number (1 to 24 and 0 or 25 depending on the
 * direction) or a cell ID and returns a pointer to the corresponding cell.
 * If the cell cannot be found it returns NULL.
 */
KBgBoardCell* KBgBoard::getCell(int num)
{
	switch (num) {
	case BAR_US:
		return (KBgBoardCell *)cells[22];
	case BAR_THEM:
		return (KBgBoardCell *)cells[ 7];
	case HOME_THEM_LEFT:
		return (KBgBoardCell *)cells[ 0];
	case HOME_THEM_RIGHT:
		return (KBgBoardCell *)cells[14];
	case HOME_US_LEFT:
		return (KBgBoardCell *)cells[15];
	case HOME_US_RIGHT:
		return (KBgBoardCell *)cells[29];
	default:
		int cell;
		if (num < 0 || num > 25)
			return NULL;
		else if (num < 7)
			cell = ((direction > 0) ? num      : 29 - num);
		else if (num < 13)
			cell = ((direction > 0) ? num + 1  : 28 - num);
		else if (num < 19)
			cell = ((direction > 0) ? 41 - num : num - 12);
		else
			cell = ((direction > 0) ? 40 - num : num - 11);
		return (KBgBoardCell *)cells[cell];
	}
}

/*
 * This function translates a field ID to the field number or just
 * returns the ID for bars and homes.
 */
int KBgBoard::IDtoNum(const int ID) const
{
	if (ID > 0 && ID < 25) {
		if (ID < 13)
			return ((direction > 0) ?      ID : 12 + ID);
		else
			return ((direction > 0) ? 37 - ID : 25 - ID);
	}
	return  ID;
}

/*
 * This function takes a checker from the cell if possible. It also
 * updates the bookkeeping of the board and redraws itself.
 */
bool KBgBoardCell::getPiece()
{
	if (pcs != 0) {
		((pcs > 0) ? --pcs : ++pcs);
		stateChanged = true;
		refresh();
		board->updateField(getNumber(), pcs);
		return true;
	}
	return false;
}

/*
 * This function stores the current cursor and replaces it with the
 * supplied one c.
 */
void KBgBoard::replaceCursor(const TQCursor& c)
{
	if (savedCursor)
		delete savedCursor;
	savedCursor = new TQCursor(cursor());
	setCursor(c);
}

/*
 * This function restores the previously set cursor to the stored one.
 */
void KBgBoard::restoreCursor()
{
	if (savedCursor) {
		setCursor(*savedCursor);
		delete savedCursor;
		savedCursor = NULL;
	}
}

/*
 * This function puts a checker of color newColor on the cell. It handles
 * all necessary updates including the kicking. It will however not properly
 * handle illegal moves!
 */
void KBgBoardCell::putPiece(int newColor)
{
	if (newColor*pcs > 0) {
		pcs > 0 ? ++pcs : --pcs;
	} else if (pcs == 0) {
		newColor > 0 ? pcs = 1 : pcs = -1;
	} else if (newColor*pcs < 0) {
		board->kickedPiece();
		newColor > 0 ? pcs = 1 : pcs = -1;
	}
	stateChanged = true;
	refresh();
	board->updateField(getNumber(), pcs);
	board->sendMove();
}

/*
 * This function handles mouse release events. It is important to know that
 * the cell where the first mousePressEvent occurred receives the release event.
 * The release event marks the end of a drag or a single click short move.
 */
void KBgBoardCell::mouseReleaseEvent(TQMouseEvent *e)
{
 	if (dragInProgress) {

		KBgBoardCell *dest = board->getCellByPos
			(mapToParent(e->pos()));
		board->restoreCursor();
		if ((dest != NULL) && (dest->dropPossible(cellID, ((board->getTurn() == US) ?
								   color : -color)))) {
			if (!board->getEditMode())
				board->makeMove(getNumber(), dest->getNumber());
			dest->putPiece(((board->getTurn() == US) ? color : -color));
		} else {
			putPiece(((board->getTurn() == US) ? color : -color));
		}
		dragInProgress = false;

 	} else {

		checkAndMakeShortMove(e, SHORT_MOVE_SINGLE);

 	}
}

/*
 * This is the destructor of the home cells. It doesn't do anything.
 */
KBgBoardHome::~KBgBoardHome()
{
	//  nothing
}

/*
 * This is the destructor of the bar cells. It doesn't do anything.
 */
KBgBoardBar::~KBgBoardBar()
{
	// nothing
}

/*
 * This is the destructor of regular fields. It doesn't do anything.
 */
KBgBoardField::~KBgBoardField()
{
	// nothing
}

/*
 * This is the constructor of the bars. It calls the base class' constructor
 * and defines the TQWhatsThis string.
 */
KBgBoardBar::KBgBoardBar(TQWidget * parent, int numID)
	: KBgBoardCell(parent, numID)
{
	TQWhatsThis::add(this, i18n("This is the bar of the backgammon board.\n\n"
				   "Checkers that have been kicked from the board are put "
				   "on the bar and remain there until they can be put back "
				   "on the board. Checkers can be moved by dragging them to "
				   "their destination or by using the 'short move' feature.\n\n"
				   "If the cube hasn't been doubled yet and if it can be used, "
				   "its face shows 64 and if the cube can be doubled, double "
				   "clicking it will do so."));
}

/*
 * This is the constructor of regular fields. It calls the base class' constructor
 * and defines the TQWhatsThis string.
 */
KBgBoardField::KBgBoardField(TQWidget * parent, int numID)
	: KBgBoardCell(parent, numID)
{
	TQWhatsThis::add(this, i18n("This is a regular field of the backgammon board.\n\n"
				   "Checkers can be placed on this field and if the current state "
				   "of the game and the dice permit this, they can be moved by "
				   "dragging them to their destination or by using the 'short "
				   "move' feature."));
}

/*
 * This is the constructor of the homes. It calls the base class' constructor
 * and defines the TQWhatsThis string.
 */
KBgBoardHome::KBgBoardHome(TQWidget * parent, int numID)
	: KBgBoardCell(parent, numID)
{
	TQWhatsThis::add(this, i18n("This part of the backgammon board is the home.\n\n"
				   "Depending on the direction of the game, one of the homes "
				   "contains the dice and the other one contains checkers that "
				   "have been moved off the board. Checkers can never be moved "
				   "away from the home. If this home contains the dice and the "
				   "current state of the game permits this, double clicking on "
				   "the dice will roll them. Moreover, the cube might be placed "
				   "on the home bar and if it can be doubled, double clicking it "
				   "will do so."));
	savedDice[0] = -1;
	savedDice[1] = -1;
}

/*
 * This function updates the number of checkers on the bar and also updates
 * the cell if the cube has changed (this is more often than necessary...)
 */
void KBgBoardBar::cellUpdate(const int p, const bool cubechanged)
{
	stateChanged = (cubechanged || colorChanged);
	if (pcs != p) {
		stateChanged = true;
		pcs = p;
	}
}

/*
 * This function updates the number of checkers on the field.
 */
void KBgBoardField::cellUpdate(const int p, const bool cubechanged)
{
	if (p != pcs) {
		pcs = p;
		stateChanged = true;
	}
	bool f = stateChanged; // useless, avoids compiler warning
	stateChanged = cubechanged;
	stateChanged = (f || colorChanged);
}

/*
 * This function updates the number of checkers on the home if it
 * actually contains checkers. It will also redraw if the cube or dice
 * have changed.
 */
void KBgBoardHome::cellUpdate(const int p, const bool cubechanged)
{
	if ((cellID == HOME_THEM_LEFT  && direction > 0) ||
	    (cellID == HOME_THEM_RIGHT && direction < 0) ||
	    (cellID == HOME_US_LEFT    && direction > 0) ||
	    (cellID == HOME_US_RIGHT   && direction < 0)) {

		if (pcs != p) {
			pcs = p;
			stateChanged = true;
		}

	} else {

		int who = ((cellID == HOME_THEM_LEFT || cellID == HOME_THEM_RIGHT) ? THEM : US);

		stateChanged = ((savedDice[0] != board->getDice(who, 0)) ||
				(savedDice[1] != board->getDice(who, 1)));

		savedDice[0] = board->getDice(who, 0);
		savedDice[1] = board->getDice(who, 1);

		stateChanged = (stateChanged || cubechanged || colorChanged || directionChanged);
	}
}

/*
 * This function returns whose players turn it is.
 */
int KBgBoard::getTurn() const
{
	if (getEditMode())
		return ((storedTurn*color > 0) ? US : THEM);

	if (getDice(US  , 0) != 0 && getDice(US  , 1) != 0)
		return   US;
	if (getDice(THEM, 0) != 0 && getDice(THEM, 1) != 0)
		return THEM;
	return -1;
}

/*
 * This is the constructor of the basic cells. It initializes the cell
 * to a sane state and connects a signal to the board.
 */
KBgBoardCell::KBgBoardCell(TQWidget * parent, int numID)
	: TQLabel(parent)
{
	board = (KBgBoard *)parent;

	direction        = +1;
	color            = -1;
	pcs              =  0;
	cellID           = numID;
	stateChanged     = false;
	colorChanged     = false;
	directionChanged = false;
	mouseButton      = Qt::NoButton;
	dragInProgress   = false;

	connect(parent, TQT_SIGNAL(finishedUpdate()), this, TQT_SLOT(refresh()));
}

/*
 * This is the destructor of the cells. It doesn't do anything.
 */
KBgBoardCell::~KBgBoardCell()
{
	// nothing
}

/*
 * This function returns the color of the checkers on this cell.
 */
int KBgBoardCell::getCellColor()
{
	return ((pcs < 0) ? -1 : +1);
}

/*
 * This function updates the basic board settings color and direction
 * and signals a redraw if necessary.
 */
void KBgBoardCell::statusUpdate(int dir, int col)
{
	if (direction != dir || color != col) {
		colorChanged     = (color != col);
		directionChanged = (direction != dir);
		color        = col;
		direction    = dir;
		stateChanged = true;
	}
}

/*
 * This function refreshes the content of the cell if necessary.
 */
void KBgBoardCell::refresh()
{
	if (stateChanged) {
		update();
		stateChanged     = false;
		colorChanged     = false;
		directionChanged = false;
	}
}

/*
 * This function returns the board number of this cell as given by the board.
 */
int KBgBoardCell::getNumber() const
{
	return board->IDtoNum(cellID);
}

/*
 * This function returns the number of checkers of player who on the bar.
 */
int KBgBoard::getOnBar(int who) const
{
	return ((who == US || who == THEM) ? onbar[who] : 0);
}

/*
 * This function returns the face value of the n-th dice of player w
 */
int KBgBoard::getDice( int w, int n ) const
{
	return (((w == US || w == THEM) && (n == 0 || n == 1)) ? dice[w][n] : 0);
}

/*
 * This function returns the current cube value.
 */
int KBgBoard::getCube() const
{
	return cube;
}

/*
 * This function updates the stored number of pieces on field f to v.
 */
void KBgBoard::updateField(int f, int v)
{
	switch (f) {
	case BAR_US:
	case BAR_THEM:
		onbar[((f == BAR_US) ? US : THEM)] = v;
		break;
	case HOME_US_RIGHT:
	case HOME_US_LEFT:
		onhome[US] = v;
		break;
	case HOME_THEM_RIGHT:
	case HOME_THEM_LEFT:
		onhome[THEM] = v;
		break;
	default:
		if (0 < f && f < 25)
			board[f] = v;
		break;
	}
}

/*
 * This function displays the context menu our parent may have given us
 */
void KBgBoard::showContextMenu()
{
	if (contextMenu) contextMenu->popup(TQCursor::pos());
}

/*
 * This function determines if the player who can double.
 */
bool KBgBoard::canDouble(int who) const
{
	return ((who == US || who == THEM) ? maydouble[who] : false);
}

/*
 * This function is a simple utility for makeMove. It takes care
 * of all the bookeeeping needed for a move.
 */
int KBgBoard::makeMoveHelper(int si, int sf, int delta)
{
	moveHistory.append(new KBgBoardMove(si, sf, abs(delta)));
	--possMoves[abs(delta)];
	return delta;
}

/*
 * This function makes a move from src to dest for the current player.
 * It can handle illegal moves but the move should have been checked.
 */
void KBgBoard::makeMove(int src, int dest)
{
	int m[4];
	int l;

	int d = direction*((getTurn() == US) ? +1 : -1);

	if (src == BAR_US || src == BAR_THEM ) {

		int start = ((d > 0) ? 0 : 25);
		l = checkMultiMove(start, dest, m);
		moveHistory.append(new KBgBoardMove(src, start+d*m[0], m[0]));
		src = start+d*m[0];
		--possMoves[m[0]];
		for (int i = 1; i < l; i++)
			src += makeMoveHelper(src, src+d*m[i], d*m[i]);

	} else if (0 < src && src < 25 && 0 < dest && dest < 25) {

		l = checkMultiMove(src, dest, m);
		for (int i = 0; i < l; i++)
			src += makeMoveHelper(src, src+d*m[i], d*m[i]);

	} else {

		int s = src;
		int final = ((d > 0) ? 25 : 0);
		while (((l = checkMultiMove(s, final, m)) == 0) && (0 < s && s < 25))
			s -= d;

		for (int i = 0; i < l-1; i++)
			src += makeMoveHelper(src, src+d*m[i], d*m[i]);

		moveHistory.append(new KBgBoardMove(src, dest, ((d > 0) ? 25 - src : src)));
		--possMoves[m[l-1]];

	}
}

/*
 * This function checks if there is any possibility (based on the dice)
 * to move from src to dest. It takes the ownership of the intermediate
 * fields into account. The function returns the number of steps necessary
 * to perform the move (or 0 if the move is not possible) and the actual
 * dice values used for the steps are returned in the array m.
 *
 * The values src and dest are expected to be in board coordinates and the
 * homes and/or bars should already be mapped to the corresponding values
 * 0 and 25 (based onb direction and whose turn it is).
 */
int KBgBoard::checkMultiMove(int src, int dest, int m[4])
{
	m[0] = 0; m[1] = 0; m[2] = 0; m[3] = 0;

	int mcolor = ((getTurn() == US) ? color : -color);
	int d      = ((src > dest) ? -1 : 1);

	/*
	 * These are very easy special cases: move length is 0 or
	 * player cannot move to the destination field.
	 */
	if ((src == dest) || (mcolor*board[dest] < -1)) return 0;

	int diceToUse[4];
	int dice = 0;
	/*
	 * Get the available step sizes for this move
	 */
	for (int i = 1; i < 7; i++) {
		for (int j = 0; j < possMoves[i]; j++) {
			diceToUse[dice++] = i;
			/*
			 * If this happens there is something wrong
			 */
			if (dice > 4) return 0;
		}
	}
	/*
	 * And start all possible combination of dices.
	 */
	switch (dice) {
	case 4:	if (src+4*d*diceToUse[0] == dest) {
		if ((mcolor*board[src+1*d*diceToUse[0]] >=  0) &&
		    (mcolor*board[src+2*d*diceToUse[0]] >=  0) &&
		    (mcolor*board[src+3*d*diceToUse[0]] >=  0)) {
			m[0] = m[1] = m[2] = m[3] = diceToUse[0];
			return 4;
		}
	}
	case 3:	if (src+3*d*diceToUse[0] == dest) {
		if ((mcolor*board[src+1*d*diceToUse[0]] >=  0) &&
		    (mcolor*board[src+2*d*diceToUse[0]] >=  0)) {
			m[0] = m[1] = m[2] = diceToUse[0];
			return 3;
		}
	}
	case 2: if ((src+d*(diceToUse[0]+diceToUse[1])) == dest) {
		if (mcolor*board[src+d*diceToUse[0]] >= 0) {
			m[0] = diceToUse[0];
			m[1] = diceToUse[1];
			return 2;
		}
		if (mcolor*board[src+d*diceToUse[1]] >= 0) {
			m[0] = diceToUse[1];
			m[1] = diceToUse[0];
			return 2;
		}
	}
	case 1:	if (abs(src-dest) < 7 && possMoves[abs(src-dest)] > 0) {
		m[0] = abs(src-dest);
		return 1;
	}
	default: return 0;
	}
}

/*
 * This function determines if a checker can be dropped on this home field.
 * It first checks whether this is the proper of the four home fields (belongs
 * to the player and not the one with dice and cube). Then we check if the move
 * itself is possible.
 */
bool KBgBoardHome::dropPossible(int fromCellID, int newColor)
{
	if ((cellID==HOME_US_LEFT && board->getTurn() == US   && direction > 0) ||
	    (cellID==HOME_THEM_LEFT && board->getTurn() == THEM && direction > 0) ||
	    (cellID==HOME_US_RIGHT && board->getTurn() == US   && direction < 0) ||
	    (cellID==HOME_THEM_RIGHT && board->getTurn() == THEM && direction < 0))
		return (board->moveOffPossible() &&
			board->diceAllowMove(fromCellID, cellID));
	return (newColor == -12345); // always false
}

/*
 * This function is a simple boolean interface to checkMultiMove.
 * It takes car of directions and bar/home mappings. If necessary
 * it also handles the case of bearing off.
 */
bool KBgBoard::diceAllowMove(int src, int dest)
{
	int m[4];
	int w = getTurn();
	int k = ((w == US) ? +1 : -1);
	int t = ((k*direction > 0) ? 25 : 0);
	int d = ((k*direction > 0) ? +1 : -1);

	if (getEditMode())
		return true;

	if ((w == US && src == BAR_US) || (w == THEM && src == BAR_THEM)) {
		/*
		 * Move comes from a bar. Hence it has to end on a field
		 * and not on bars or homes. If there are checkers left
		 * on the bar we don't accept multi moves.
		 */
		if (0 < dest && dest < 25) {
			int r = checkMultiMove((k*direction > 0) ? 0 : 25,
					       IDtoNum(dest), m);
			return((abs(onbar[w]) == 0) ? (r != 0) : (r == 1));
		} else {
			return false;
		}
	} else if (0 < dest && dest < 25 && 0 < src && src < 25) {
		/*
		 * Move from a field to a field
		 */
		if (direction*k*(IDtoNum(dest)-IDtoNum(src)) > 0) {
			return(checkMultiMove(IDtoNum(src), IDtoNum(dest), m));
		} else {
			return false;
		}
	} else {
		/*
		 * Move from a field on the home. First we try exact dice.
		 */
		if (checkMultiMove(IDtoNum(src), t, m) > 0) return true;

 		/*
  		 * Then maybe we could bear the checker off ?
  		 */
		int i = IDtoNum(src);
 		while (0 < i && i < 25) {
			i -= d;
 			if (k*color*board[i] > 0) return false;
 		}

		/*
		 * Indeed we are bearing off. So find the highest dice and use it.
		 * Start from all the way back to catch double 6 from the start.
		 */
		int j = 24;
		while (checkMultiMove(t-d*j, t, m) == 0 && j > 0) {--j;}
		return (j >= t-d*IDtoNum(src));
	}
	return false;
}

/*
 * This is the most important of all members of the board class. It takes
 * a single board status object and initializes the internal status.
 */
void KBgBoard::setState(const KBgStatus &st)
{
	color     = st.color();
	direction = st.direction();

	cubechanged = (cube != abs(st.cube()));
	cube        = abs(st.cube());
	maydouble[US  ] = (st.cube(US  ) > 0);
	maydouble[THEM] = (st.cube(THEM) > 0);

	for (int i = 0; i < 30; i++)
		cells[i]->statusUpdate(direction, color);

	for (int i = 1; i < 25; ++i)
		board[i] = st.board(i);

	onbar[US  ] = st.bar(US  );
	onbar[THEM] = st.bar(THEM);

	onhome[US]   = st.home(US  );
	onhome[THEM] = st.home(THEM);

	dice[US  ][0]    = st.dice(US  , 0);
	dice[US  ][1]    = st.dice(US  , 1);
	dice[THEM][0]    = st.dice(THEM, 0);
	dice[THEM][1]    = st.dice(THEM, 1);

	for (int i = 0; i < 7; ++i)
		possMoves[i] = 0;

	int w = getTurn();
	if (getEditMode())
		w = ((dice[US][0] && dice[US][1]) ? US : THEM);

	if (w == US || w == THEM) {
		++possMoves[dice[w][0]];
		++possMoves[dice[w][1]];
		if (dice[w][0] == dice[w][1])
			possMoves[dice[w][0]] *= 2;
	}

	board[ 0] = 0;
	board[25] = 0;
	for (int i=1; i<25; ++i)
		(getCell(i))->cellUpdate(board[i]);

	(getCell(BAR_US  ))->cellUpdate(st.bar(US  ), cubechanged);
	(getCell(BAR_THEM))->cellUpdate(st.bar(THEM), cubechanged);

	(getCell(HOME_US_LEFT   ))->cellUpdate(st.home(US  ), cubechanged);
	(getCell(HOME_US_RIGHT  ))->cellUpdate(st.home(US  ), cubechanged);
	(getCell(HOME_THEM_LEFT ))->cellUpdate(st.home(THEM), cubechanged);
	(getCell(HOME_THEM_RIGHT))->cellUpdate(st.home(THEM), cubechanged);

	moveHistory.clear();
	redoHistory.clear();

	emit finishedUpdate();
}

/*
 * This function starts a drag from this cell if possible. It asks the board to
 * change the mouse pointer and takes a checker away from this cell.
 */
void KBgBoardCell::mouseMoveEvent(TQMouseEvent *)
{
	if ((mouseButton == Qt::LeftButton) && dragPossible()) {
		dragInProgress = true;
		TQRect cr(0, 0, 1+getCheckerDiameter(), 1+getCheckerDiameter());
		cr.moveBottomLeft(rect().bottomLeft());
		TQPixmap pix(cr.size());
		TQPainter tmp;
		pix.fill(this, cr.topLeft());
		tmp.begin(&pix);
		board->drawSimpleChecker(&tmp, 0, 0, pcs, getCheckerDiameter());
		tmp.end();
		pix.setMask(pix.createHeuristicMask());
		TQBitmap mask = *(pix.mask());
		TQBitmap newCursor;
		newCursor = pix;
		board->replaceCursor(TQCursor(newCursor, mask));
		if (board->getEditMode())
			board->storeTurn(pcs);
		getPiece();
	}
	mouseButton = Qt::NoButton;
}

/*
 * This function draws a checker on the painter p. It is painted
 * in the ractangle with the upper left corner (x,y) and has a
 * maximum diameter of diam. This checker has only two colors and
 * as such it is suited for the mouse cursor and printing.
 */
void KBgBoard::drawSimpleChecker(TQPainter *p, int x, int y, int pcs,
					 int diam) const
{
	p->setBrush(getCheckerColor(pcs));
	p->setPen(getCheckerColor(pcs));
	p->drawEllipse(x+1, y+0, diam-0, diam-0);
	p->setBrush(getCheckerColor(-pcs));
	p->setPen(getCheckerColor(-pcs));
	p->drawEllipse(x+2, y+1, diam-2, diam-2);
	p->setBrush(getCheckerColor(pcs));
	p->setPen(getCheckerColor(pcs));
	p->drawEllipse(x+3, y+2, diam-4, diam-4);
}

/*
 * This function draws an anti-aliased checker on the painter p. It
 * is painted in the ractangle with the upper left corner (x,y) and
 * has a diameter of diam. col indicates the color of the cell this
 * checker is painted on. Special values for col are 0 and 100 that
 * indicate that the checker is stacked (bars and homes) or stacked
 * on a field respectively. upper indicates whether the checker is
 * in the upper half of the board or not.
 */
void KBgBoard::drawChecker(TQPainter *p, int x, int y, int pcs, int diam,
				   int col, bool upper) const
{
	drawCircle(p, x,   y,   pcs, diam  , col, upper, true );
	drawCircle(p, x+1, y+1,-pcs, diam-2, col, upper, false);
	drawCircle(p, x+2, y+2, pcs, diam-4, col, upper, false);
}

/*
 * This function draws checkers on the painter *p. They overlap so that
 * up to fifteen checkers fit on the cell. This is used by homes and
 * bars.
 */
void KBgBoardCell::drawOverlappingCheckers(TQPainter *p, int xo, int yo,
						   double sf) const
{
	int d = getCheckerDiameter();
	bool upper =
	  cellID == HOME_THEM_LEFT  ||
	  cellID == HOME_THEM_RIGHT ||
	  cellID == BAR_THEM;
	double xp = xo + sf*((width()-d-1)/2);
	double ra = sf*d;
	for (int i = 0; i < abs(pcs); ++i) {
		double yp = yo + (upper ? 1+i*sf*height()/25.0 :
				  sf*(height()-d-i*height()/25.0));
		board->drawChecker(p, xp, yp, pcs, ra, 0, upper);
	}
}

/*
 * This function paints the content of a regular cell on the painter p.
 * It does so by first drawing a triangle (depending on whether we draw
 * on the screen or not this will be antialiased). Then on top of that
 * we draw the field number in inverse color. Finally we draw all the
 * checkers in such a way that always five are in one level and the next
 * level is slightly shifted.
 */
void KBgBoardField::paintCell(TQPainter *p, int xo, int yo, double sf) const
{
	TQColor color, alphaColor, background = backgroundColor();
	bool printing = abs(xo)+abs(yo) > 0;

	if (printing) {
		/*
		 * This is the code for black and white printing on
		 * paper. This justs draws a triangle and surrounds
		 * it by a black triangle. Easy but works.
		 */
		TQPointArray pa(3);

		color = (getNumber()%2 ? white : black);

		if (cellID < 13) {
			pa.setPoint( 0, xo               , yo                  );
			pa.setPoint( 1, xo + sf*width()/2, yo + 0.9*sf*height());
			pa.setPoint( 2, xo + sf*width()  , yo                  );
		} else {
			pa.setPoint( 0, xo               , yo + sf*(height()-1));
			pa.setPoint( 1, xo + sf*width()/2, yo + 0.1*sf*height());
			pa.setPoint( 2, xo + sf*width()  , yo + sf*(height()-1));
		}

		p->setBrush(color);
		p->setPen(color);
		p->drawPolygon(pa);

		p->setBrush(black);
		p->setPen(black);
		p->drawPolyline(pa);

	} else {
		/*
		 * This is the code for antialiased triangles. This code has
		 * been written by Bo Thorsen.
		 */
		color = board->getCheckerColor(getNumber()%2-1);

		int topX, topY, bottomX1, bottomX2, bottomY, incrY;
		topX = xo + (int)(sf*width()/2.0);
		bottomX1 = xo;
		bottomX2 = xo + (int)(sf*width());
		if (cellID < 13) {
			topY = yo + (int)(0.9*sf*height());
			bottomY = yo;
			incrY = 1;
		} else {
			topY = yo + (int)(0.1*sf*height());
			bottomY = yo + (int)(sf*height());
			incrY = -1;
		}

		float x1 = bottomX1, x2 = bottomX2;
		float dx1 = (float)(topX-bottomX1) / (topY-bottomY);
		float dx2 = (float)(topX-bottomX2) / (topY-bottomY);
		if (dx1 < 0) dx1 = -dx1;
		if (dx2 < 0) dx2 = -dx2;

		p->setPen( color );
		p->drawLine(bottomX1, bottomY, bottomX2, bottomY);
		x1 += dx1;
		x2 -= dx2;

		/*
		 * The scaling factor (0.99) cuts off the top op the points
		 */
		for (int y=bottomY; x1 < x2*0.99; y+=incrY) {
			int ix1 = (int)x1, ix2 = (int)x2;
			float a1 = x1 - ix1, a2 = x2 - ix2;

			/*
			 * This is a simple linear interpolation between
			 * the two colors
			 */
			int red1 = (int)
				((1-a1)*color.red() + a1*background.red());
			int green1 = (int)
				((1-a1)*color.green() + a1*background.green());
			int blue1 = (int)
				((1-a1)*color.blue() + a1*background.blue());
			int red2 = (int)
				(a2*color.red() + (1-a2)*background.red());
			int green2 = (int)
				(a2*color.green() + (1-a2)*background.green());
			int blue2 = (int)
				(a2*color.blue() + (1-a2)*background.blue());

			/*
			 * Draw the antialiasing pixels
			 */
			alphaColor.setRgb(red1, green1, blue1);
			p->setPen(alphaColor);
			p->drawPoint(ix1, y);
			alphaColor.setRgb(red2, green2, blue2);
			p->setPen(alphaColor);
			p->drawPoint(ix2, y);

			ix1++;
			ix2--;
			x1 += dx1;
			x2 -= dx2;

			if (ix1 <= ix2 && x1 < x2*0.99) {
				/*
				 * Draw the line
				 */
				p->setPen(color);
				p->drawLine(ix1, y, ix2, y);
			}
		}
	}

	/*
	 * Print the field number in inverted color
	 */
	color = board->getCheckerColor((1+getNumber())%2-1);

	p->setBrush(color);
	p->setPen(color);

	TQString t;
	t.setNum(getNumber());

	p->setFont(board->getFont());
	int textHeight = TQFontMetrics(p->font()).height();
	p->drawText(xo, yo+((cellID < 13) ? 5 : height()-5-textHeight),
		    width()*sf, textHeight, AlignCenter, t);

	/*
	 * Put the checkers on the field.
	 */
	int d = getCheckerDiameter();
	double yp, xp = xo + sf*((width()-d-1)/2);
	double ra = sf*d;
	bool upper = cellID < 13;
	int col = (getNumber()%2) ? 1 : -1;

	for (int i = 0; i < abs(pcs); ++i) {
		/*
		 * There is hard work in these formulas. Unless you have
		 * tried _ALL_ possible windowsizes: don't touch!
		 */
		yp = yo + (upper ? sf*((i%5)+(i/5)/4.0)*(d-1) :
			   sf*(height()-((1+i%5)*d)-int(i/5)*0.25*d)-1);
		if (printing) {
			board->drawSimpleChecker(p, xp, yp, pcs, ra);
		} else {
			board->drawChecker(p, xp, yp, pcs, ra,
					   ((i < 5) ? col : 100), upper);
		}
	}

	/*
	 * Finally draw the horizontal boundaries
	 */
	KBgBoardCell::paintCell(p, xo, yo, sf);
}

/*
 * This function draws an anti-aliased circle on the painter p. It is painted
 * in the ractangle with the upper left corner (x,y) and has a maximum diameter
 * of diam. col and upper are as in drawChecker(). outer indicates if this
 * circle blends with the background. Note that this function needs knowledge
 * about the triangles on the cells. This is long but it is just a big if
 * construct.
 */
void KBgBoard::drawCircle(TQPainter *p, int x, int y, int pcs, int diam,
				  int col, bool upper, bool outer) const
{
	TQColor fColor = getCheckerColor(pcs);
	TQColor alphaColor;
	TQColor bColor;

	int red, green, blue;
	int rad = diam/2;
	int xoff = 0;

	float sn = 4;
	float rs = 0.25*diam*diam;
	float cf, a;

	for (int ys = rad; ys >= 0; ys--) {
		for (int xs = xoff; cf = 0, xs < rad; xs++) {

			/*
			 * perform super-sample this pixel
			 */
			for (int s1 = 0; s1 < sn; s1++)
				for (int s2 = 0; s2 < sn; s2++)
					if ((rad-xs+s1/sn)*(rad-xs+s1/sn)+
					    (rad-ys+s2/sn)*(rad-ys+s2/sn) < rs)
						cf += 1;
			a = cf/sn/sn;

			if (outer && (col == 0 || col == 100)) {

				if (col == 0)
					bColor = backgroundColor();
				else
					bColor = fColor;

				red   = (int)
					((1-a)*bColor.red()+a*fColor.red());
				green = (int)
					((1-a)*bColor.green()+a*fColor.green());
				blue  = (int)
					((1-a)*bColor.blue()+a*fColor.blue());

				alphaColor.setRgb(red, green, blue);

				p->setBrush(alphaColor);
				p->setPen(alphaColor);

				if (upper) {

					p->drawPoint(x+xs, y+diam-ys);
					p->drawPoint(x+diam-xs, y+diam-ys);

					p->setBrush(fColor);
					p->setPen(fColor);

					p->drawPoint(x+xs, y+ys);
					p->drawPoint(x+diam-xs, y+ys);

				} else {

					p->drawPoint(x+xs, y+ys);
					p->drawPoint(x+diam-xs, y+ys);

					p->setBrush(fColor);
					p->setPen(fColor);

					p->drawPoint(x+xs, y+diam-ys);
					p->drawPoint(x+diam-xs, y+diam-ys);

				}

			} else if (outer) {

				if (upper) {

					bColor = getCheckerColor(col);

					red   = (int)((1-a)*bColor.red()+
						      a*fColor.red());
					green = (int)((1-a)*bColor.green()+
						      a*fColor.green());
					blue  = (int)((1-a)*bColor.blue()+
						      a*fColor.blue());

					alphaColor.setRgb(red, green, blue);

					p->setBrush(alphaColor);
					p->setPen(alphaColor);

					p->drawPoint(x+xs, y+ys);
					p->drawPoint(x+diam-xs, y+ys);
					p->drawPoint(x+xs, y+diam-ys);
					p->drawPoint(x+diam-xs, y+diam-ys);

					bColor = backgroundColor();

					red   = (int)((1-a)*bColor.red()+
						      a*fColor.red());
					green = (int)((1-a)*bColor.green()+
						      a*fColor.green());
					blue  = (int)((1-a)*bColor.blue()+
						      a*fColor.blue());

					alphaColor.setRgb(red, green, blue);
					p->setBrush(alphaColor);
					p->setPen(alphaColor);

					if (x+xs < rad*(y+ys)/(0.45*height())) {
						p->drawPoint(x+xs, y+ys);
						p->drawPoint(x+diam-xs, y+ys);
					}
					if (x+xs<rad*(y+diam-ys)/(0.45*height())) {
						p->drawPoint(x+xs, y+diam-ys);
						p->drawPoint(x+diam-xs, y+diam-ys);
					}

				} else {

					bColor = getCheckerColor(col);

					red   = (int)((1-a)*bColor.red()+
						      a*fColor.red());
					green = (int)((1-a)*bColor.green()+
						      a*fColor.green());
					blue  = (int)((1-a)*bColor.blue()+
						      a*fColor.blue());

					alphaColor.setRgb(red, green, blue);
					p->setBrush(alphaColor);
					p->setPen(alphaColor);

					p->drawPoint(x+xs, y+ys);
					p->drawPoint(x+diam-xs, y+ys);
					p->drawPoint(x+xs, y+diam-ys);
					p->drawPoint(x+diam-xs, y+diam-ys);

					bColor = backgroundColor();

					red   = (int)((1-a)*bColor.red()+
						      a*fColor.red());
					green = (int)((1-a)*bColor.green()+
						      a*fColor.green());
					blue  = (int)((1-a)*bColor.blue()+
						      a*fColor.blue());

					alphaColor.setRgb(red, green, blue);
					p->setBrush(alphaColor);
					p->setPen(alphaColor);

					if (x+xs<rad*(0.5-(y+ys)/
						      (1.0*height()))/0.45) {
						p->drawPoint(x+xs, y+ys);
						p->drawPoint(x+diam-xs, y+ys);
					}
					if (x+xs < rad*(0.5-(y+diam-ys)/
							(1.0*height()))/0.45) {
						p->drawPoint(x+xs, y+diam-ys);
						p->drawPoint(x+diam-xs, y+diam-ys);
					}
				}

			} else {

				bColor = getCheckerColor(-pcs);

				red   = (int)((1-a)*bColor.red()+
					      a*fColor.red());
				green = (int)((1-a)*bColor.green()+
					      a*fColor.green());
				blue  = (int)((1-a)*bColor.blue()+
					      a*fColor.blue());

				alphaColor.setRgb(red, green, blue);
				p->setBrush(alphaColor);
				p->setPen(alphaColor);

				p->drawPoint(x+xs, y+ys);
				p->drawPoint(x+diam-xs, y+ys);
				p->drawPoint(x+xs, y+diam-ys);
				p->drawPoint(x+diam-xs, y+diam-ys);

			}

			if (fabs(cf-sn*sn) < 0.0001) {

				p->moveTo(x+xs, y+ys);
				p->lineTo(x+diam-xs, y+ys);
				p->moveTo(x+xs, y+diam-ys);
				p->lineTo(x+diam-xs, y+diam-ys);

				xoff = xs;
				break;

			}
		}
	}
}

/*
 * This function redoes a previously undone move
 */
void KBgBoard::redoMove()
{
	if (getEditMode())
		return;

	int w      = getTurn();
	int mcolor = ((w == US) ? color : -color);
	KBgBoardMove *move = redoHistory.last();
	if (move && (w == US || w == THEM)) {
		/*
		 * Make changes at source
		 */
		if (move->source() == BAR_US || move->source() == BAR_THEM) {
			onbar[w] -= mcolor;
			(getCell(move->source()))->cellUpdate(onbar[w], false);
		} else {
			board[move->source()] -= mcolor;
			(getCell(move->source()))->cellUpdate(board[move->source()]);
		}
		/*
		 * Make changes at the destination
		 */
		if ((move->destination() == HOME_THEM_LEFT ) || (move->destination() == HOME_THEM_RIGHT) ||
		    (move->destination() == HOME_US_LEFT   ) || (move->destination() == HOME_US_RIGHT  )) {
			onhome[w] += mcolor;
			(getCell(move->destination()))->cellUpdate(onhome[w], false);
		} else {
			board[move->destination()] += mcolor;
			if (move->wasKicked()) {
				board[move->destination()] = mcolor;
				onbar[((w == US) ? THEM : US)] -= mcolor;
				(getCell(((w == US) ? BAR_THEM : BAR_US)))->cellUpdate
					(onbar[((w == US) ? THEM : US)], false);
			}
			(getCell(move->destination()))->cellUpdate(board[move->destination()]);
		}
		makeMove(move->source(), move->destination());
		redoHistory.remove();
		emit finishedUpdate();
	}
	sendMove();
}

/*
 * This function performs and undo for the last move and updates the parent
 * of the board by calling sendMove() after the undo.
 */
void KBgBoard::undoMove()
{
	if (getEditMode())
		return;

	int w      = getTurn();
	int mcolor = ((w == US) ? color : -color);
	KBgBoardMove *move = moveHistory.last();
	if (move && (w == US || w == THEM)) {
		/*
		 * Undo changes at source
		 */
		if (move->source() == BAR_US || move->source() == BAR_THEM) {
			onbar[w] += mcolor;
			(getCell(move->source()))->cellUpdate(onbar[w], false);
		} else {
			board[move->source()] += mcolor;
			(getCell(move->source()))->cellUpdate
				(board[move->source()]);
		}
		/*
		 * Undo changes at the destination
		 */
		if ( (move->destination() == HOME_THEM_LEFT ) ||
		     (move->destination() == HOME_THEM_RIGHT) ||
		     (move->destination() == HOME_US_LEFT   ) ||
		     (move->destination() == HOME_US_RIGHT  )) {
			onhome[w] -= mcolor;
			(getCell(move->destination()))->cellUpdate
				(onhome[w], false);
		} else {
			board[move->destination()] -= mcolor;
			if (move->wasKicked()) {
				board[move->destination()] = -mcolor;
				onbar[((w == US) ? THEM : US)] += mcolor;
				(getCell(((w == US) ?
					  BAR_THEM : BAR_US)))->cellUpdate
					(onbar[((w == US) ? THEM : US)], false);
			}
			(getCell(move->destination()))->cellUpdate
				(board[move->destination()]);
		}
		++possMoves[move->length()];
		redoHistory.append(new KBgBoardMove(*move));
		moveHistory.remove();
		emit finishedUpdate();
	}
	sendMove();
}

/*
 * While putting a piece on a cell the cell has noticed that it changed
 * ownership and hence needs a piece to be kicked. Since cells don't
 * know where the opponents bar is we handle this here.
 */
void KBgBoard::kickedPiece()
{
	int w = ((getTurn()) == US ? THEM : US);

	if (w == US) {
		onbar[w] += color;
		(getCell(BAR_US  ))->cellUpdate(onbar[w], false);
	} else {
		onbar[w] -= color;
		(getCell(BAR_THEM))->cellUpdate(onbar[w], false);
	}
	if (!getEditMode()) {
		KBgBoardMove *move = moveHistory.last();
		move->setKicked(true);
	}
	emit finishedUpdate();
}

/*
 * This is a very short utility function for makeShortMove().
 */
void KBgBoardCell::makeShortMoveHelper(int s, int d)
{
	if (getPiece()) {
		board->makeMove(s, d);
		KBgBoardCell *dest = board->getCell(d);
		dest->putPiece(((board->getTurn() == US) ? color : -color));
	}
}

/*
 * This function makes the shortes possible move from this cell. It
 * uses only one dice and and it will kick opponent checkers.
 */
void KBgBoardCell::makeShortMove()
{
	int m[4];

	int dir = ((board->getTurn() == US) ? direction : -direction);
	int src = board->IDtoNum(cellID);

	if (src == BAR_US || src == BAR_THEM) {

		int s = (dir > 0) ? 0 : 25;
		for (int i = 1; i < 7; i++) {
			int d = (dir > 0) ? i : 25 - i;
			if (board->checkMultiMove(s, d, m) == 1) {
				makeShortMoveHelper(src, d);
				break;
			}
		}

	} else {

		for (int i = 1; i < 7; i++) {
			int d = src + dir*i;
			if (d > 25) d = 25;
			if (d <  0) d =  0;
			if (0 < d && d < 25) {

				if (board->checkMultiMove(src, d, m) == 1) {
					makeShortMoveHelper(src, d);
					break;
				}

			} else {

				if (board->moveOffPossible()) {
					int whichHome;
					if (board->getTurn() == US)
						whichHome = ((direction > 0) ?
							     HOME_US_LEFT :
							     HOME_US_RIGHT);
					else
						whichHome = ((direction > 0) ?
							     HOME_THEM_LEFT :
							     HOME_THEM_RIGHT);

					if (board->diceAllowMove
					    (cellID, whichHome)) {
						makeShortMoveHelper(src, whichHome);
						break;
					}
				}
			}
		}
	}
}

/*
 * Ask the current backgammon engine for a doubled cube.
 */
void KBgBoard::getDoubleCube(const int w)
{
	emit doubleCube(w);
}

/*
 * Ask the current backgammon engine rolling the dice.
 */
void KBgBoard::getRollDice(const int w)
{
	emit rollDice(w);
}

/*
 * This is the constructor of the KBgBoard class. It creates
 * a backgammon board with an initial distribution of checkers, empty
 * dice and a cube with face value 1. The initial board is not usable!
 * You have to change the status by passing a KBgStatus
 * object to setState(...) before you can play!
 */
KBgBoard::KBgBoard(TQWidget *parent, const char *name, TQPopupMenu *menu)
	: TQWidget(parent, name)
{
	/*
	 * The following lines set up internal bookkeeping data.
	 */
	moveHistory.setAutoDelete(true);
	redoHistory.setAutoDelete(true);
	cube = 1;
	allowMoving(true);
	setEditMode(false);
	savedCursor = NULL;
	checkerDiam = MINIMUM_CHECKER_SIZE;

	/*
	 * We may be initialized with a popup menu by our parent.
	 */
	contextMenu = menu;

	baseColors[0] = black;
	baseColors[1] = white;

	/*
	 * Get the 30 cells that constitute the board and initialize
	 * them properly.
	 */
	cells[ 0] = new KBgBoardHome(this, HOME_THEM_LEFT);
	cells[14] = new KBgBoardHome(this, HOME_THEM_RIGHT);
	cells[15] = new KBgBoardHome(this, HOME_US_LEFT);
	cells[29] = new KBgBoardHome(this, HOME_US_RIGHT);

	cells[ 7] = new KBgBoardBar(this, BAR_THEM);
	cells[22] = new KBgBoardBar(this, BAR_US);

	for (int i=1; i<7; ++i) {
		cells[   i] = new KBgBoardField(this,    i);
		cells[ 7+i] = new KBgBoardField(this,  6+i);
		cells[15+i] = new KBgBoardField(this, 12+i);
		cells[22+i] = new KBgBoardField(this, 18+i);
	}

	/*
	 * Get the default seeting of the board and initialize the
	 * state of it.
	 */
	KBgStatus *st = new KBgStatus();

	st->setCube(1, true, true);
	st->setDirection(+1);
	st->setColor(+1);

	st->setBoard( 1, US,   2); st->setBoard( 6, THEM, 5);
	st->setBoard( 8, THEM, 3); st->setBoard(12, US,   5);
	st->setBoard(13, THEM, 5); st->setBoard(17, US,   3);
	st->setBoard(19, US,   5); st->setBoard(24, THEM, 2);

	st->setHome(US, 0);

	st->setDice(US  , 0, 0); st->setDice(US  , 1, 0);
	st->setDice(THEM, 0, 0); st->setDice(THEM, 1, 0);

	setState(*st);

	delete st;

	/*
	 * This line simplifies the checkMultiMove(...) function a lot.
	 */
	board[0] = board[25] = 0;

	/*
	 * User interface design settings come here. These may be
	 * overwritten by the user.
	 */
	shortMoveMode = SHORT_MOVE_DOUBLE;
	setBackgroundColor(TQColor(200, 200, 166));
	computePipCount = true;

	/*
	 * Set initial font
	 */
	setFont(TQApplication::font());
}

TQSize KBgBoard::minimumSizeHint() const
{
	return TQSize(MINIMUM_CHECKER_SIZE * 15, MINIMUM_CHECKER_SIZE * 11);
}

TQSize KBgBoard::sizeHint() const {
	return TQSize(MINIMUM_CHECKER_SIZE *15*4,MINIMUM_CHECKER_SIZE*11*2);
}