summaryrefslogtreecommitdiffstats
path: root/kpdf/ui/pageview.cpp
blob: 157a3655f26378e9b9dc8fb6dc9ca2e53ada82b7 (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
/***************************************************************************
 *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
 *   Copyright (C) 2004-2006 by Albert Astals Cid <tsdgeos@terra.es>       *
 *                                                                         *
 *   With portions of code from kpdf/kpdf_pagewidget.cc by:                *
 *     Copyright (C) 2002 by Wilco Greven <greven@kde.org>                 *
 *     Copyright (C) 2003 by Christophe Devriese                           *
 *                           <Christophe.Devriese@student.kuleuven.ac.be>  *
 *     Copyright (C) 2003 by Laurent Montel <montel@kde.org>               *
 *     Copyright (C) 2003 by Dirk Mueller <mueller@kde.org>                *
 *     Copyright (C) 2004 by James Ots <kde@jamesots.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.                                   *
 ***************************************************************************/

// qt/kde includes
#include <tqcursor.h>
#include <tqpainter.h>
#include <tqtimer.h>
#include <tqdatetime.h>
#include <tqpushbutton.h>
#include <tqtooltip.h>
#include <tqapplication.h>
#include <clipboard.h>
#include <dcopclient.h>
#include <kcursor.h>
#include <kiconloader.h>
#include <kurldrag.h>
#include <kaction.h>
#include <kstdaccel.h>
#include <kactioncollection.h>
#include <kpopupmenu.h>
#include <klocale.h>
#include <kfiledialog.h>
#include <kimageeffect.h>
#include <kimageio.h>
#include <kapplication.h>
#include <kdebug.h>

// system includes
#include <math.h>
#include <stdlib.h>

// local includes
#include "pageview.h"
#include "pageviewutils.h"
#include "pagepainter.h"
#include "core/document.h"
#include "core/page.h"
#include "core/link.h"
#include "core/generator.h"
#include "conf/settings.h"

#define ROUND(x) (int(x + 0.5))

// definition of searchID for this class
#define PAGEVIEW_SEARCH_ID 2

// structure used internally by PageView for data storage
class PageViewPrivate
{
public:
    // the document, pageviewItems and the 'visible cache'
    KPDFDocument * document;
    TQValueVector< PageViewItem * > items;
    TQValueList< PageViewItem * > visibleItems;

    // view layout (columns and continuous in Settings), zoom and mouse
    PageView::ZoomMode zoomMode;
    float zoomFactor;
    int rotation;
    PageView::MouseMode mouseMode;
    TQPoint mouseGrabPos;
    TQPoint mousePressPos;
    int mouseMidStartY;
    bool mouseOnRect;
    TQRect mouseSelectionRect;
    TQColor selectionRectColor;

    // type ahead find
    bool typeAheadActive;
    TQString typeAheadString;
    TQTimer * findTimeoutTimer;
    // viewport move
    bool viewportMoveActive;
    TQTime viewportMoveTime;
    TQPoint viewportMoveDest;
    TQTimer * viewportMoveTimer;
    // auto scroll
    int scrollIncrement;
    TQTimer * autoScrollTimer;
    // other stuff
    TQTimer * delayResizeTimer;
    bool dirtyLayout;
    bool blockViewport;                 // prevents changes to viewport
    bool blockPixmapsRequest;           // prevent pixmap requests
    PageViewMessage * messageWindow;    // in pageviewutils.h
    PageViewTip * tip;

    // drag scroll
    TQPoint dragScrollVector;
    TQTimer dragScrollTimer;

    // actions
    KToggleAction * aMouseNormal;
    KToggleAction * aMouseSelect;
    KToggleAction * aMouseEdit;
    KSelectAction * aZoom;
    KToggleAction * aZoomFitWidth;
    KToggleAction * aZoomFitPage;
    KToggleAction * aZoomFitText;
    KToggleAction * aViewTwoPages;
    KToggleAction * aViewContinuous;
    KAction * aPrevAction;
};



class PageViewTip : public TQToolTip
{
    public:
        PageViewTip( PageView * view )
            : TQToolTip( view->viewport() ), m_view( view )
        {
        }

        ~PageViewTip()
        {
            remove( m_view->viewport() );
        }


    protected:
        void maybeTip( const TQPoint &p );

    private:
        PageView * m_view;
};

void PageViewTip::maybeTip( const TQPoint &_p )
{
    TQPoint p( _p.x() + m_view->contentsX(), _p.y() + m_view->contentsY() );
    PageViewItem * pageItem = m_view->pickItemOnPoint( p.x(), p.y() );
    if ( pageItem && m_view->d->mouseMode == PageView::MouseNormal )
    {
        double nX = (double)(p.x() - pageItem->geometry().left()) / (double)pageItem->width(),
               nY = (double)(p.y() - pageItem->geometry().top()) / (double)pageItem->height();

        // if over a ObjectRect (of type Link) change cursor to hand
        const ObjectRect * object = pageItem->page()->hasObject( ObjectRect::Link, nX, nY );
        if ( object )
        {
            // set tooltip over link's rect
            KPDFLink *link = (KPDFLink *)object->pointer();
            TQString strtip = link->linkTip();
            if ( !strtip.isEmpty() )
            {
                TQRect linkRect = object->geometry( pageItem->width(), pageItem->height() );
                linkRect.moveBy( - m_view->contentsX() + pageItem->geometry().left(), - m_view->contentsY() + pageItem->geometry().top() );
                tip( linkRect, strtip );
            }
        }
    }
}



/* PageView. What's in this file? -> quick overview.
 * Code weight (in rows) and meaning:
 *  160 - constructor and creating actions plus their connected slots (empty stuff)
 *  70  - DocumentObserver inherited methodes (important)
 *  550 - events: mouse, keyboard, drag/drop
 *  170 - slotRelayoutPages: set contents of the scrollview on continuous/single modes
 *  100 - zoom: zooming pages in different ways, keeping update the toolbar actions, etc..
 *  other misc functions: only slotRequestVisiblePixmaps and pickItemOnPoint noticeable,
 * and many insignificant stuff like this comment :-)
 */
PageView::PageView( TQWidget *parent, KPDFDocument *document )
    : TQScrollView( parent, "KPDF::pageView", WStaticContents | WNoAutoErase )
{
    // create and initialize private storage structure
    d = new PageViewPrivate();
    d->document = document;
    d->zoomMode = (PageView::ZoomMode)KpdfSettings::zoomMode();
    d->zoomFactor = KpdfSettings::zoomFactor();
    d->rotation = 0;
    d->mouseMode = MouseNormal;
    d->mouseMidStartY = -1;
    d->mouseOnRect = false;
    d->typeAheadActive = false;
    d->findTimeoutTimer = 0;
    d->viewportMoveActive = false;
    d->viewportMoveTimer = 0;
    d->scrollIncrement = 0;
    d->autoScrollTimer = 0;
    d->delayResizeTimer = 0;
    d->dirtyLayout = false;
    d->blockViewport = false;
    d->blockPixmapsRequest = false;
    d->messageWindow = new PageViewMessage(this);
    d->tip = new PageViewTip( this );
    d->aPrevAction = 0;

    // widget setup: setup focus, accept drops and track mouse
    viewport()->setFocusProxy( this );
    viewport()->setFocusPolicy( TQ_StrongFocus );
    //viewport()->setPaletteBackgroundColor( TQt::white );
    viewport()->setBackgroundMode( TQt::NoBackground );
    setResizePolicy( Manual );
    setAcceptDrops( true );
    setDragAutoScroll( false );
    viewport()->setMouseTracking( true );

    // conntect the padding of the viewport to pixmaps requests
    connect( this, TQT_SIGNAL(contentsMoving(int, int)), this, TQT_SLOT(slotRequestVisiblePixmaps(int, int)) );
    connect( &d->dragScrollTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotDragScroll()) );

    // set a corner button to resize the view to the page size
//    TQPushButton * resizeButton = new TQPushButton( viewport() );
//    resizeButton->setPixmap( SmallIcon("crop") );
//    setCornerWidget( resizeButton );
//    resizeButton->setEnabled( false );
    // connect(...);
    setInputMethodEnabled( true );

    // schedule the welcome message
    TQTimer::singleShot( 0, this, TQT_SLOT( slotShowWelcome() ) );
}

PageView::~PageView()
{
    // delete all widgets
    TQValueVector< PageViewItem * >::iterator dIt = d->items.begin(), dEnd = d->items.end();
    for ( ; dIt != dEnd; ++dIt )
        delete *dIt;
    delete d->tip;
    d->tip = 0;
    d->document->removeObserver( this );
    delete d;
}

void PageView::setupActions( KActionCollection * ac )
{
    // Zoom actions ( higher scales takes lots of memory! )
    d->aZoom = new KSelectAction( i18n( "Zoom" ), "viewmag", 0, TQT_TQOBJECT(this), TQT_SLOT( slotZoom() ), ac, "zoom_to" );
    d->aZoom->setEditable( true );
#if KDE_IS_VERSION(3,4,89)
    d->aZoom->setMaxComboViewCount( 13 );
#endif
    updateZoomText();

    KStdAction::zoomIn( TQT_TQOBJECT(this), TQT_SLOT( slotZoomIn() ), ac, "zoom_in" );

    KStdAction::zoomOut( TQT_TQOBJECT(this), TQT_SLOT( slotZoomOut() ), ac, "zoom_out" );

    d->aZoomFitWidth = new KToggleAction( i18n("Fit to Page &Width"), "view_fit_width", 0, ac, "zoom_fit_width" );
    connect( d->aZoomFitWidth, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotFitToWidthToggled( bool ) ) );

    d->aZoomFitPage = new KToggleAction( i18n("Fit to &Page"), "view_fit_window", 0, ac, "zoom_fit_page" );
    connect( d->aZoomFitPage, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotFitToPageToggled( bool ) ) );

    d->aZoomFitText = new KToggleAction( i18n("Fit to &Text"), "viewmagfit", 0, ac, "zoom_fit_text" );
    connect( d->aZoomFitText, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotFitToTextToggled( bool ) ) );

    // rotate actions
    KAction *action;
    action = new KAction( i18n("Rotate Right"), "rotate_cw", KShortcut( "Ctrl+Shift++" ),
                          TQT_TQOBJECT(this), TQT_SLOT( slotRotateRight() ), ac, "rotate_right" );

    action = new KAction( i18n("Rotate Left"), "rotate_ccw", KShortcut( "Ctrl+Shift+-" ),
                          TQT_TQOBJECT(this), TQT_SLOT( slotRotateLeft() ), ac, "rotate_left" );

    // View-Layout actions
    d->aViewTwoPages = new KToggleAction( i18n("&Two Pages"), "view_left_right", 0, ac, "view_twopages" );
    connect( d->aViewTwoPages, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotTwoPagesToggled( bool ) ) );
    d->aViewTwoPages->setChecked( KpdfSettings::viewColumns() > 1 );

    d->aViewContinuous = new KToggleAction( i18n("&Continuous"), "view_text", 0, ac, "view_continuous" );
    connect( d->aViewContinuous, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotContinuousToggled( bool ) ) );
    d->aViewContinuous->setChecked( KpdfSettings::viewContinuous() );

    // Mouse-Mode actions
    d->aMouseNormal = new KRadioAction( i18n("&Browse Tool"), "mouse", 0, TQT_TQOBJECT(this), TQT_SLOT( slotSetMouseNormal() ), ac, "mouse_drag" );
    d->aMouseNormal->setExclusiveGroup( "MouseType" );
    d->aMouseNormal->setChecked( true );

    KToggleAction * mz = new KRadioAction( i18n("&Zoom Tool"), "viewmag", 0, TQT_TQOBJECT(this), TQT_SLOT( slotSetMouseZoom() ), ac, "mouse_zoom" );
    mz->setExclusiveGroup( "MouseType" );

    d->aMouseSelect = new KRadioAction( i18n("&Select Tool"), "frame_edit", 0, TQT_TQOBJECT(this), TQT_SLOT( slotSetMouseSelect() ), ac, "mouse_select" );
    d->aMouseSelect->setExclusiveGroup( "MouseType" );

/*    d->aMouseEdit = new KRadioAction( i18n("Draw"), "edit", 0, TQT_TQOBJECT(this), TQT_SLOT( slotSetMouseDraw() ), ac, "mouse_draw" );
    d->aMouseEdit->setExclusiveGroup("MouseType");
    d->aMouseEdit->setEnabled( false ); // implement feature before removing this line*/

    // Other actions
    KAction * su = new KAction( i18n("Scroll Up"), 0, TQT_TQOBJECT(this), TQT_SLOT( slotScrollUp() ), ac, "view_scroll_up" );
    su->setShortcut( "Shift+Up" );

    KAction * sd = new KAction( i18n("Scroll Down"), 0, TQT_TQOBJECT(this), TQT_SLOT( slotScrollDown() ), ac, "view_scroll_down" );
    sd->setShortcut( "Shift+Down" );
}

bool PageView::canFitPageWidth()
{
    return d->zoomMode != ZoomFitWidth;
}

void PageView::fitPageWidth( int /*page*/ )
{
    d->aZoom->setCurrentItem(0);
    slotZoom();
}

//BEGIN DocumentObserver inherited methods
void PageView::notifySetup( const TQValueVector< KPDFPage * > & pageSet, bool documentChanged )
{
    // reuse current pages if nothing new
    if ( ( pageSet.count() == d->items.count() ) && !documentChanged )
    {
        int count = pageSet.count();
        for ( int i = 0; (i < count) && !documentChanged; i++ )
            if ( (int)pageSet[i]->number() != d->items[i]->pageNumber() )
                documentChanged = true;
        if ( !documentChanged )
            return;
    }

    // delete all widgets (one for each page in pageSet)
    TQValueVector< PageViewItem * >::iterator dIt = d->items.begin(), dEnd = d->items.end();
    for ( ; dIt != dEnd; ++dIt )
        delete *dIt;
    d->items.clear();
    d->visibleItems.clear();

    // create children widgets
    TQValueVector< KPDFPage * >::const_iterator setIt = pageSet.begin(), setEnd = pageSet.end();
    for ( ; setIt != setEnd; ++setIt )
        d->items.push_back( new PageViewItem( *setIt ) );

    if ( pageSet.count() > 0 )
        // TODO for Enrico: Check if doing always the slotRelayoutPages() is not
        // suboptimal in some cases, i'd say it is not but a recheck will not hurt
        // Need slotRelayoutPages() here instead of d->dirtyLayout = true
        // because opening a pdf from another pdf will not trigger a viewportchange
        // so pages are never relayouted
        TQTimer::singleShot(0, this, TQT_SLOT(slotRelayoutPages()));
    else
    {
        // update the mouse cursor when closing because we may have close through a link and
        // want the cursor to come back to the normal cursor
        updateCursor( viewportToContents( mapFromGlobal( TQCursor::pos() ) ) );
        resizeContents( 0, 0 );
    }

    // OSD to display pages
    if ( documentChanged && pageSet.count() > 0 && KpdfSettings::showOSD() )
        d->messageWindow->display(
            i18n(" Loaded a one-page document.",
                 " Loaded a %n-page document.",
                 pageSet.count() ),
            PageViewMessage::Info, 4000 );
}

void PageView::notifyViewportChanged( bool smoothMove )
{
    // if we are the one changing viewport, skip this nofity
    if ( d->blockViewport )
        return;

    // block setViewport outgoing calls
    d->blockViewport = true;

    // find PageViewItem matching the viewport description
    const DocumentViewport & vp = d->document->viewport();
    PageViewItem * item = 0;
    TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
    for ( ; iIt != iEnd; ++iIt )
        if ( (*iIt)->pageNumber() == vp.pageNumber )
        {
            item = *iIt;
            break;
        }
    if ( !item )
    {
        kdDebug() << "viewport has no matching item!" << endl;
        d->blockViewport = false;
        return;
    }

    // relayout in "Single Pages" mode or if a relayout is pending
    d->blockPixmapsRequest = true;
    if ( !KpdfSettings::viewContinuous() || d->dirtyLayout )
        slotRelayoutPages();

    // restore viewport center or use default {x-center,v-top} alignment
    const TQRect & r = item->geometry();
    int newCenterX = r.left(),
        newCenterY = r.top();
    if ( vp.rePos.enabled )
    {
        if (vp.rePos.pos == DocumentViewport::Center)
        {
            newCenterX += (int)( vp.rePos.normalizedX * (double)r.width() );
            newCenterY += (int)( vp.rePos.normalizedY * (double)r.height() );
        }
        else
        {
            // TopLeft
            newCenterX += (int)( vp.rePos.normalizedX * (double)r.width() + viewport()->width() / 2 );
            newCenterY += (int)( vp.rePos.normalizedY * (double)r.height() + viewport()->height() / 2 );
        }
    }
    else
    {
        newCenterX += r.width() / 2;
        newCenterY += visibleHeight() / 2 - 10;
    }

    // if smooth movement requested, setup parameters and start it
    if ( smoothMove )
    {
        d->viewportMoveActive = true;
        d->viewportMoveTime.start();
        d->viewportMoveDest.setX( newCenterX );
        d->viewportMoveDest.setY( newCenterY );
        if ( !d->viewportMoveTimer )
        {
            d->viewportMoveTimer = new TQTimer( this );
            connect( d->viewportMoveTimer, TQT_SIGNAL( timeout() ),
                     this, TQT_SLOT( slotMoveViewport() ) );
        }
        d->viewportMoveTimer->start( 25 );
        verticalScrollBar()->setEnabled( false );
        horizontalScrollBar()->setEnabled( false );
    }
    else
        center( newCenterX, newCenterY );
    d->blockPixmapsRequest = false;

    // request visible pixmaps in the current viewport and recompute it
    slotRequestVisiblePixmaps();

    // enable setViewport calls
    d->blockViewport = false;

    // update zoom text if in a ZoomFit/* zoom mode
    if ( d->zoomMode != ZoomFixed )
        updateZoomText();

    // since the page has moved below cursor, update it
    updateCursor( viewportToContents( mapFromGlobal( TQCursor::pos() ) ) );
}

void PageView::notifyPageChanged( int pageNumber, int changedFlags )
{
    // only handle pixmap / highlight changes notifies
    if ( changedFlags & DocumentObserver::Bookmark )
        return;

    // iterate over visible items: if page(pageNumber) is one of them, repaint it
    TQValueList< PageViewItem * >::iterator iIt = d->visibleItems.begin(), iEnd = d->visibleItems.end();
    for ( ; iIt != iEnd; ++iIt )
        if ( (*iIt)->pageNumber() == pageNumber )
        {
            // update item's rectangle plus the little outline
            TQRect expandedRect = (*iIt)->geometry();
            expandedRect.addCoords( -1, -1, 3, 3 );
            updateContents( expandedRect );

            // if we were "zoom-dragging" do not overwrite the "zoom-drag" cursor
            if ( cursor().shape() != TQt::SizeVerCursor )
            {
                // since the page has been regenerated below cursor, update it
                updateCursor( viewportToContents( mapFromGlobal( TQCursor::pos() ) ) );
            }
            break;
        }
}

void PageView::notifyContentsCleared( int changedFlags )
{
    // if pixmaps were cleared, re-ask them
    if ( changedFlags & DocumentObserver::Pixmap )
        slotRequestVisiblePixmaps();
}

bool PageView::canUnloadPixmap( int pageNumber )
{
    // if the item is visible, forbid unloading
    TQValueList< PageViewItem * >::iterator vIt = d->visibleItems.begin(), vEnd = d->visibleItems.end();
    for ( ; vIt != vEnd; ++vIt )
        if ( (*vIt)->pageNumber() == pageNumber )
            return false;
    // if hidden premit unloading
    return true;
}
//END DocumentObserver inherited methods


void PageView::showText( const TQString &text, int ms )
{
    d->messageWindow->display(text, PageViewMessage::Info, ms );
}


//BEGIN widget events
void PageView::viewportPaintEvent( TQPaintEvent * pe )
{
    // create the rect into contents from the clipped screen rect
    TQRect viewportRect = viewport()->rect();
    TQRect contentsRect = pe->rect().intersect( viewportRect );
    contentsRect.moveBy( contentsX(), contentsY() );
    if ( !contentsRect.isValid() )
        return;

    // create the screen painter. a pixel painted ar contentsX,contentsY
    // appears to the top-left corner of the scrollview.
    TQPainter screenPainter( viewport(), true );
    screenPainter.translate( -contentsX(), -contentsY() );

    // selectionRect is the normalized mouse selection rect
    TQRect selectionRect = d->mouseSelectionRect;
    if ( !selectionRect.isNull() )
        selectionRect = selectionRect.normalize();
    // selectionRectInternal without the border
    TQRect selectionRectInternal = selectionRect;
    selectionRectInternal.addCoords( 1, 1, -1, -1 );
    // color for blending
    TQColor selBlendColor = (selectionRect.width() > 8 || selectionRect.height() > 8) ?
                           d->selectionRectColor : TQt::red;

    // subdivide region into rects
    TQMemArray<TQRect> allRects = TQRegion(pe->region()).rects();
    uint numRects = allRects.count();

    // preprocess rects area to see if it worths or not using subdivision
    uint summedArea = 0;
    for ( uint i = 0; i < numRects; i++ )
    {
        const TQRect & r = allRects[i];
        summedArea += r.width() * r.height();
    }
    // very elementary check: SUMj(Region[j].area) is less than boundingRect.area
    bool useSubdivision = summedArea < (0.7 * contentsRect.width() * contentsRect.height());
    if ( !useSubdivision )
        numRects = 1;

    // iterate over the rects (only one loop if not using subdivision)
    for ( uint i = 0; i < numRects; i++ )
    {
        if ( useSubdivision )
        {
            // set 'contentsRect' to a part of the sub-divided region
            contentsRect = allRects[i].normalize().intersect( viewportRect );
            contentsRect.moveBy( contentsX(), contentsY() );
            if ( !contentsRect.isValid() )
                continue;
        }

        // note: this check will take care of all things requiring alpha blending (not only selection)
        bool wantCompositing = !selectionRect.isNull() && contentsRect.intersects( selectionRect );

        if ( wantCompositing && KpdfSettings::enableCompositing() )
        {
            // create pixmap and open a painter over it (contents{left,top} becomes pixmap {0,0})
            TQPixmap doubleBuffer( contentsRect.size() );
            TQPainter pixmapPainter( &doubleBuffer );
            pixmapPainter.translate( -contentsRect.left(), -contentsRect.top() );

            // 1) Layer 0: paint items and clear bg on unpainted rects
            paintItems( &pixmapPainter, contentsRect );
            // 2) Layer 1: pixmap manipulated areas
            // 3) Layer 2: paint (blend) transparent selection
            if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
                 !selectionRectInternal.contains( contentsRect ) )
            {
                TQRect blendRect = selectionRectInternal.intersect( contentsRect );
                // skip rectangles covered by the selection's border
                if ( blendRect.isValid() )
                {
                    // grab current pixmap into a new one to colorize contents
                    TQPixmap blendedPixmap( blendRect.width(), blendRect.height() );
                    copyBlt( &blendedPixmap, 0,0, &doubleBuffer,
                                blendRect.left() - contentsRect.left(), blendRect.top() - contentsRect.top(),
                                blendRect.width(), blendRect.height() );
                    // blend selBlendColor into the background pixmap
                    TQImage blendedImage = blendedPixmap.convertToImage();
                    KImageEffect::blend( selBlendColor.dark(140), blendedImage, 0.2 );
                    // copy the blended pixmap back to its place
                    pixmapPainter.drawPixmap( blendRect.left(), blendRect.top(), blendedImage );
                }
                // draw border (red if the selection is too small)
                pixmapPainter.setPen( selBlendColor );
                pixmapPainter.drawRect( selectionRect );
            }
            // 4) Layer 3: overlays
            if ( KpdfSettings::debugDrawBoundaries() )
            {
                pixmapPainter.setPen( TQt::blue );
                pixmapPainter.drawRect( contentsRect );
            }

            // finish painting and draw contents
            pixmapPainter.end();
            screenPainter.drawPixmap( contentsRect.left(), contentsRect.top(), doubleBuffer );
        }
        else
        {
            // 1) Layer 0: paint items and clear bg on unpainted rects
            paintItems( &screenPainter, contentsRect );
            // 2) Layer 1: opaque manipulated ares (filled / contours)
            // 3) Layer 2: paint opaque selection
            if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
                 !selectionRectInternal.contains( contentsRect ) )
            {
                screenPainter.setPen( palette().active().highlight().dark(110) );
                screenPainter.drawRect( selectionRect );
            }
            // 4) Layer 3: overlays
            if ( KpdfSettings::debugDrawBoundaries() )
            {
                screenPainter.setPen( TQt::red );
                screenPainter.drawRect( contentsRect );
            }
        }
    }
}

void PageView::viewportResizeEvent( TQResizeEvent * )
{
    // start a timer that will refresh the pixmap after 0.5s
    if ( !d->delayResizeTimer )
    {
        d->delayResizeTimer = new TQTimer( this );
        connect( d->delayResizeTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( slotRelayoutPages() ) );
    }
    d->delayResizeTimer->start( 333, true );
}

void PageView::keyPressEvent( TQKeyEvent * e )
{
    e->accept();

    // if performing a selection or dyn zooming, disable keys handling
    if ( ( !d->mouseSelectionRect.isNull() && e->key() != TQt::Key_Escape ) || d->mouseMidStartY != -1 )
        return;

    // handle 'find as you type' (based on khtml/khtmlview.cpp)
    if( d->typeAheadActive )
    {
        // backspace: remove a char and search or terminates search
        if( e->key() == Key_BackSpace )
        {
            if( d->typeAheadString.length() > 1 )
            {
                d->typeAheadString = d->typeAheadString.left( d->typeAheadString.length() - 1 );
                bool found = d->document->searchText( PAGEVIEW_SEARCH_ID, d->typeAheadString, true, false,
                        KPDFDocument::NextMatch, true, tqRgb( 128, 255, 128 ), true );
                TQString status = found ? i18n("Text found: \"%1\".") : i18n("Text not found: \"%1\".");
                d->messageWindow->display( status.arg(d->typeAheadString.lower()),
                                           found ? PageViewMessage::Find : PageViewMessage::Warning, 4000 );
                d->findTimeoutTimer->start( 3000, true );
            }
            else
            {
                findAheadStop();
                d->document->resetSearch( PAGEVIEW_SEARCH_ID );
            }
        }
        // F3: go to next occurrency
        else if( e->key() == KStdAccel::findNext() )
        {
            // part doesn't get this key event because of the keyboard grab
            d->findTimeoutTimer->stop(); // restore normal operation during possible messagebox is displayed
            // it is needed to grab the keyboard becase people may have Space assigned to a 
            // accel and without grabbing the keyboard you can not vim-search for space
            // because it activates the accel
            releaseKeyboard();
            if ( d->document->continueSearch( PAGEVIEW_SEARCH_ID ) )
                d->messageWindow->display( i18n("Text found: \"%1\".").arg(d->typeAheadString.lower()),
                                           PageViewMessage::Find, 3000 );
            d->findTimeoutTimer->start( 3000, true );
            // it is needed to grab the keyboard becase people may have Space assigned to a 
            // accel and without grabbing the keyboard you can not vim-search for space
            // because it activates the accel
            grabKeyboard();
        }
        // esc and return: end search
        else if( e->key() == Key_Escape || e->key() == Key_Return )
        {
            findAheadStop();
        }
        // other key: add to text and search
        else if( !e->text().isEmpty() )
        {
            d->typeAheadString += e->text();
            doTypeAheadSearch();
        }
        return;
    }
    else if( e->key() == '/' && d->document->isOpened() && d->document->supportsSearching() )
    {
        // stop scrolling the page (if doing it)
        if ( d->autoScrollTimer )
        {
            d->scrollIncrement = 0;
            d->autoScrollTimer->stop();
        }
        // start type-adeas search
        d->typeAheadString = TQString();
        d->messageWindow->display( i18n("Starting -- find text as you type"), PageViewMessage::Find, 3000 );
        d->typeAheadActive = true;
        if ( !d->findTimeoutTimer )
        {
            // create the timer on demand
            d->findTimeoutTimer = new TQTimer( this );
            connect( d->findTimeoutTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( findAheadStop() ) );
        }
        d->findTimeoutTimer->start( 3000, true );
        // it is needed to grab the keyboard becase people may have Space assigned to a 
        // accel and without grabbing the keyboard you can not vim-search for space
        // because it activates the accel
        grabKeyboard();
        return;
    }

    // if viewport is moving, disable keys handling
    if ( d->viewportMoveActive )
        return;

    // move/scroll page by using keys
    switch ( e->key() )
    {
        case Key_Up:
        case Key_PageUp:
	case Key_Backspace:
            // if in single page mode and at the top of the screen, go to previous page
            if ( KpdfSettings::viewContinuous() || verticalScrollBar()->value() > verticalScrollBar()->minValue() )
            {
                if ( e->key() == Key_Up )
                    verticalScrollBar()->subtractLine();
                else
                    verticalScrollBar()->subtractPage();
            }
            else if ( d->document->currentPage() > 0 )
            {
                // more optimized than document->setPrevPage and then move view to bottom
                DocumentViewport newViewport = d->document->viewport();
                newViewport.pageNumber -= 1;
                newViewport.rePos.enabled = true;
                newViewport.rePos.normalizedY = 1.0;
                d->document->setViewport( newViewport );
            }
            break;
        case Key_Down:
        case Key_PageDown:
	case Key_Space:
            // if in single page mode and at the bottom of the screen, go to next page
            if ( KpdfSettings::viewContinuous() || verticalScrollBar()->value() < verticalScrollBar()->maxValue() )
            {
                if ( e->key() == Key_Down )
                    verticalScrollBar()->addLine();
                else
                    verticalScrollBar()->addPage();
            }
            else if ( d->document->currentPage() < d->items.count() - 1 )
            {
                // more optmized than document->setNextPage and then move view to top
                DocumentViewport newViewport = d->document->viewport();
                newViewport.pageNumber += 1;
                newViewport.rePos.enabled = true;
                newViewport.rePos.normalizedY = 0.0;
                d->document->setViewport( newViewport );
            }
            break;
        case Key_Left:
            horizontalScrollBar()->subtractLine();
            break;
        case Key_Right:
            horizontalScrollBar()->addLine();
            break;
        case TQt::Key_Escape:
            selectionClear();
            d->mousePressPos = TQPoint();
            if ( d->aPrevAction )
            {
                d->aPrevAction->activate();
                d->aPrevAction = 0;
            }
            break;
        case Key_Shift:
        case Key_Control:
            if ( d->autoScrollTimer )
            {
                if ( d->autoScrollTimer->isActive() )
                    d->autoScrollTimer->stop();
                else
                    slotAutoScoll();
                return;
            }
            // else fall trhough
        default:
            e->ignore();
            return;
    }
    // if a known key has been pressed, stop scrolling the page
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }
}

void PageView::imEndEvent( TQIMEvent * e )
{
    if( d->typeAheadActive )
    {
        if( !e->text().isEmpty() )
        {
            d->typeAheadString += e->text();
            doTypeAheadSearch();
            e->accept();
        }
    }
}

void PageView::contentsMouseMoveEvent( TQMouseEvent * e )
{
    // don't perform any mouse action when no document is shown
    if ( d->items.isEmpty() )
        return;

    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    // if holding mouse mid button, perform zoom
    if ( (e->state() & Qt::MidButton) && d->mouseMidStartY >= 0 )
    {
        int deltaY = d->mouseMidStartY - e->globalPos().y();
        d->mouseMidStartY = e->globalPos().y();
        d->zoomFactor *= ( 1.0 + ( (double)deltaY / 500.0 ) );
        updateZoom( ZoomRefreshCurrent );
        // uncomment following line to force a complete redraw
        viewport()->repaint( false );
        return;
    }

    bool leftButton = e->state() & Qt::LeftButton,
         rightButton = e->state() & Qt::RightButton;
    switch ( d->mouseMode )
    {
        case MouseNormal:
            if ( leftButton )
            {
                // drag page
                if ( !d->mouseGrabPos.isNull() )
                {
                    // scroll page by position increment
                    TQPoint delta = d->mouseGrabPos - e->globalPos();
                    scrollBy( delta.x(), delta.y() );
                    d->mouseGrabPos = e->globalPos();
                }
            }
            else if ( rightButton && !d->mousePressPos.isNull() )
            {
                // if mouse moves 5 px away from the press point, switch to 'selection'
                int deltaX = d->mousePressPos.x() - e->globalPos().x(),
                    deltaY = d->mousePressPos.y() - e->globalPos().y();
                if ( deltaX > 5 || deltaX < -5 || deltaY > 5 || deltaY < -5 )
                {
                    d->aPrevAction = d->aMouseNormal;
                    d->aMouseSelect->activate();
                    TQColor selColor = palette().active().highlight().light( 120 );
                    selectionStart( e->x() + deltaX, e->y() + deltaY, selColor, false );
                    selectionEndPoint( e->x(), e->y() );
                    break;
                }
            }
            else
            {
                // only hovering the page, so update the cursor
                updateCursor( e->pos() );
            }
            break;

        case MouseZoom:
        case MouseSelect:
            // set second corner of selection
            if ( !d->mousePressPos.isNull() && ( leftButton || d->aPrevAction ) )
                selectionEndPoint( e->x(), e->y() );
            break;

        case MouseEdit:      // ? update graphics ?
            break;
    }
}

void PageView::contentsMousePressEvent( TQMouseEvent * e )
{
    // don't perform any mouse action when no document is shown
    if ( d->items.isEmpty() )
        return;

    // if performing a selection or dyn zooming, disable mouse press
    if ( !d->mouseSelectionRect.isNull() || d->mouseMidStartY != -1 ||
         d->viewportMoveActive )
        return;

    // if the page is scrolling, stop it
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }

    // if pressing mid mouse button while not doing other things, begin 'comtinous zoom' mode
    if ( e->button() & Qt::MidButton )
    {
        d->mouseMidStartY = e->globalPos().y();
        setCursor( KCursor::sizeVerCursor() );
        return;
    }

    // update press / 'start drag' mouse position
    d->mousePressPos = e->globalPos();

    // handle mode dependant mouse press actions
    bool leftButton = e->button() & Qt::LeftButton,
         rightButton = e->button() & Qt::RightButton;
    switch ( d->mouseMode )
    {
        case MouseNormal:   // drag start / click / link following
            if ( leftButton )
            {
                d->mouseGrabPos = d->mouseOnRect ? TQPoint() : d->mousePressPos;
                if ( !d->mouseOnRect )
                    setCursor( KCursor::sizeAllCursor() );
            }
            break;

        case MouseZoom:     // set first corner of the zoom rect
            if ( leftButton )
                selectionStart( e->x(), e->y(), palette().active().highlight(), false );
            else if ( rightButton )
                updateZoom( ZoomOut );
            break;

        case MouseSelect:   // set first corner of the selection rect
            if ( leftButton )
            {
                TQColor selColor = palette().active().highlight().light( 120 );
                selectionStart( e->x(), e->y(), selColor, false );
            }
            break;

        case MouseEdit:     // ..to do..
            break;
    }
}

void PageView::contentsMouseReleaseEvent( TQMouseEvent * e )
{
    // stop the drag scrolling
    d->dragScrollTimer.stop();

    // don't perform any mouse action when no document is shown
    if ( d->items.isEmpty() )
    {
        // ..except for right Clicks (emitted even it viewport is empty)
        if ( e->button() == Qt::RightButton )
            emit rightClick( 0, e->globalPos() );
        return;
    }

    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    // handle mode indepent mid buttom zoom
    bool midButton = e->button() & Qt::MidButton;
    if ( midButton && d->mouseMidStartY > 0 )
    {
        d->mouseMidStartY = -1;
        // while drag-zooming we could have gone over a link
        updateCursor( e->pos() );
        return;
    }

    bool leftButton = e->button() & Qt::LeftButton,
         rightButton = e->button() & Qt::RightButton;
    switch ( d->mouseMode )
    {
        case MouseNormal:{
            // return the cursor to its normal state after dragging
            if ( cursor().shape() == TQt::SizeAllCursor )
                updateCursor( e->pos() );

            PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );

            // if the mouse has not moved since the press, that's a -click-
            if ( leftButton && pageItem && d->mousePressPos == e->globalPos())
            {
                double nX = (double)(e->x() - pageItem->geometry().left()) / (double)pageItem->width(),
                       nY = (double)(e->y() - pageItem->geometry().top()) / (double)pageItem->height();
                const ObjectRect * linkRect, * imageRect;
                linkRect = pageItem->page()->hasObject( ObjectRect::Link, nX, nY );
                if ( linkRect )
                {
                    // handle click over a link
                    const KPDFLink * link = static_cast< const KPDFLink * >( linkRect->pointer() );
                    d->document->processLink( link );
                }
                else
                {
                    // a link can move us to another page or even to another document, there's no point in trying to process the click on the image once we have processes the click on the link
                    imageRect = pageItem->page()->hasObject( ObjectRect::Image, nX, nY );
                    if ( imageRect )
                    {
                        // handle click over a image
                    }
                    // Enrico and me have decided this is not worth the trouble it generates
                    // else
                    // {
                        // if not on a rect, the click selects the page
                        // d->document->setViewportPage( pageItem->pageNumber(), PAGEVIEW_ID );
                    // }
                }
            }
            else if ( rightButton )
            {
                // right click (if not within 5 px of the press point, the mode
                // had been already changed to 'Selection' instead of 'Normal')
                emit rightClick( pageItem ? pageItem->page() : 0, e->globalPos() );
            }
            }break;

        case MouseZoom:
            // if a selection rect has been defined, zoom into it
            if ( leftButton && !d->mouseSelectionRect.isNull() )
            {
                TQRect selRect = d->mouseSelectionRect.normalize();
                if ( selRect.width() <= 8 && selRect.height() <= 8 )
                {
                    selectionClear();
                    break;
                }

                // find out new zoom ratio and normalized view center (relative to the contentsRect)
                double zoom = TQMIN( (double)visibleWidth() / (double)selRect.width(), (double)visibleHeight() / (double)selRect.height() );
                double nX = (double)(selRect.left() + selRect.right()) / (2.0 * (double)contentsWidth());
                double nY = (double)(selRect.top() + selRect.bottom()) / (2.0 * (double)contentsHeight());

                // zoom up to 400%
                if ( d->zoomFactor <= 4.0 || zoom <= 1.0 )
                {
                    d->zoomFactor *= zoom;
                    viewport()->setUpdatesEnabled( false );
                    updateZoom( ZoomRefreshCurrent );
                    viewport()->setUpdatesEnabled( true );
                }

                // recenter view and update the viewport
                center( (int)(nX * contentsWidth()), (int)(nY * contentsHeight()) );
                updateContents();

                // hide message box and delete overlay window
                selectionClear();
            }
            break;

        case MouseSelect:{

            if (d->mouseSelectionRect.isNull() && rightButton) 
	    {
	    	 PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
	    	 emit rightClick( pageItem ? pageItem->page() : 0, e->globalPos() );
	    }
	    
            // if a selection is defined, display a popup
            if ( (!leftButton && !d->aPrevAction) || (leftButton && d->aPrevAction) ||
                 d->mouseSelectionRect.isNull() )
                break;

            TQRect selectionRect = d->mouseSelectionRect.normalize();
            if ( selectionRect.width() <= 8 && selectionRect.height() <= 8 )
            {
                selectionClear();
                if ( d->aPrevAction )
                {
                    d->aPrevAction->activate();
                    d->aPrevAction = 0;
                }
                break;
            }

            // grab text in selection by extracting it from all intersected pages
            TQString selectedText;
            TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
            for ( ; iIt != iEnd; ++iIt )
            {
                PageViewItem * item = *iIt;
                const TQRect & itemRect = item->geometry();
                if ( selectionRect.intersects( itemRect ) )
                {
                    // request the textpage if there isn't one
                    const KPDFPage * kpdfPage = item->page();
                    if ( !kpdfPage->hasSearchPage() )
                        d->document->requestTextPage( kpdfPage->number() );
                    // grab text in the rect that intersects itemRect
                    TQRect relativeRect = selectionRect.intersect( itemRect );
                    relativeRect.moveBy( -itemRect.left(), -itemRect.top() );
                    NormalizedRect normRect( relativeRect, item->width(), item->height() );
                    selectedText += kpdfPage->getText( normRect );
                }
            }

            // popup that ask to copy:text and copy/save:image
            KPopupMenu menu( this );
            if ( !selectedText.isEmpty() )
            {
                menu.insertTitle( i18n( "Text (1 character)", "Text (%n characters)", selectedText.length() ) );
                menu.insertItem( SmallIcon("editcopy"), i18n( "Copy to Clipboard" ), 1 );
                if ( !d->document->isAllowed( KPDFDocument::AllowCopy ) )
                    menu.setItemEnabled( 1, false );
                if ( KpdfSettings::useKTTSD() )
                    menu.insertItem( SmallIcon("kttsd"), i18n( "Speak Text" ), 2 );
            }
            menu.insertTitle( i18n( "Image (%1 by %2 pixels)" ).arg( selectionRect.width() ).arg( selectionRect.height() ) );
            menu.insertItem( SmallIcon("image"), i18n( "Copy to Clipboard" ), 3 );
            menu.insertItem( SmallIcon("filesave"), i18n( "Save to File..." ), 4 );
            int choice = menu.exec( e->globalPos() );
            // IMAGE operation choosen
            if ( choice > 2 )
            {
                // renders page into a pixmap
                TQPixmap copyPix( selectionRect.width(), selectionRect.height() );
                TQPainter copyPainter( &copyPix );
                copyPainter.translate( -selectionRect.left(), -selectionRect.top() );
                paintItems( &copyPainter, selectionRect );

                if ( choice == 3 )
                {
                    // [2] copy pixmap to clipboard
                    TQClipboard *cb = TQApplication::clipboard();
                    cb->setPixmap( copyPix, TQClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setPixmap( copyPix, TQClipboard::Selection );
                    d->messageWindow->display( i18n( "Image [%1x%2] copied to clipboard." ).arg( copyPix.width() ).arg( copyPix.height() ) );
                }
                else if ( choice == 4 )
                {
                    // [3] save pixmap to file
                    TQString fileName = KFileDialog::getSaveFileName( TQString(), "image/png image/jpeg", this );
                    if ( fileName.isNull() )
                        d->messageWindow->display( i18n( "File not saved." ), PageViewMessage::Warning );
                    else
                    {
                        TQString type( KImageIO::type( fileName ) );
                        if ( type.isNull() )
                            type = "PNG";
                        copyPix.save( fileName, type.latin1() );
                        d->messageWindow->display( i18n( "Image [%1x%2] saved to %3 file." ).arg( copyPix.width() ).arg( copyPix.height() ).arg( type ) );
                    }
                }
            }
            // TEXT operation choosen
            else
            {
                if ( choice == 1 )
                {
                    // [1] copy text to clipboard
                    TQClipboard *cb = TQApplication::clipboard();
                    cb->setText( selectedText, TQClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setText( selectedText, TQClipboard::Selection );
                }
                else if ( choice == 2 )
                {
                    // [2] speech selection using KTTSD
                    DCOPClient * client = DCOPClient::mainClient();
                    // Albert says is this ever necessary?
                    // we already attached on Part constructor
                    // if ( !client->isAttached() )
                    //    client->attach();
                    // If KTTSD not running, start it.
                    if (!client->isApplicationRegistered("kttsd"))
                    {
                        TQString error;
                        if (KApplication::startServiceByDesktopName("kttsd", TQStringList(), &error))
                        {
                            d->messageWindow->display( i18n("Starting KTTSD Failed: %1").arg(error) );
                            KpdfSettings::setUseKTTSD(false);
                            KpdfSettings::writeConfig();
                        }
                    }
                    if ( KpdfSettings::useKTTSD() )
                    {
                        // serialize the text to speech (selectedText) and the
                        // preferred reader ("" is the default voice) ...
                        TQByteArray data;
                        TQDataStream arg( data, IO_WriteOnly );
                        arg << selectedText;
                        arg << TQString();
                        TQCString replyType;
                        TQByteArray replyData;
                        // ..and send it to KTTSD
                        if (client->call( "kttsd", "KSpeech", "setText(TQString,TQString)", data, replyType, replyData, true ))
                        {
                            TQByteArray  data2;
                            TQDataStream arg2(data2, IO_WriteOnly);
                            arg2 << 0;
                            client->send("kttsd", "KSpeech", "startText(uint)", data2 );
                        }
                    }
                }
            }

            // clear widget selection and invalidate rect
            selectionClear();

            // restore previous action if came from it using right button
            if ( d->aPrevAction )
            {
                d->aPrevAction->activate();
                d->aPrevAction = 0;
            }
            }break;

        case MouseEdit:      // ? apply [tool] ?
            break;
    }

    // reset mouse press / 'drag start' position
    d->mousePressPos = TQPoint();
}

void PageView::wheelEvent( TQWheelEvent *e )
{
    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    if ( !d->document->isOpened() )
    {
        TQScrollView::wheelEvent( e );
        return;
    }

    int delta = e->delta(),
        vScroll = verticalScrollBar()->value();
    e->accept();
    if ( (e->state() & ControlButton) == ControlButton ) {
        if ( e->delta() < 0 )
            slotZoomOut();
        else
            slotZoomIn();
    }
    else if ( delta <= -120 && !KpdfSettings::viewContinuous() && vScroll == verticalScrollBar()->maxValue() )
    {
        // go to next page
        if ( d->document->currentPage() < d->items.count() - 1 )
        {
            // more optmized than document->setNextPage and then move view to top
            DocumentViewport newViewport = d->document->viewport();
            newViewport.pageNumber += 1;
            newViewport.rePos.enabled = true;
            newViewport.rePos.normalizedY = 0.0;
            d->document->setViewport( newViewport );
        }
    }
    else if ( delta >= 120 && !KpdfSettings::viewContinuous() && vScroll == verticalScrollBar()->minValue() )
    {
        // go to prev page
        if ( d->document->currentPage() > 0 )
        {
            // more optmized than document->setPrevPage and then move view to bottom
            DocumentViewport newViewport = d->document->viewport();
            newViewport.pageNumber -= 1;
            newViewport.rePos.enabled = true;
            newViewport.rePos.normalizedY = 1.0;
            d->document->setViewport( newViewport );
        }
    }
    else
        TQScrollView::wheelEvent( e );

    TQPoint cp = viewportToContents(e->pos());
    updateCursor(cp);
}

void PageView::dragEnterEvent( TQDragEnterEvent * ev )
{
    ev->accept();
}

void PageView::dropEvent( TQDropEvent * ev )
{
    KURL::List lst;
    if (  KURLDrag::decode(  ev, lst ) )
        emit urlDropped( lst.first() );
}
//END widget events

void PageView::paintItems( TQPainter * p, const TQRect & contentsRect )
{
    // when checking if an Item is contained in contentsRect, instead of
    // growing PageViewItems rects (for keeping outline into account), we
    // grow the contentsRect
    TQRect checkRect = contentsRect;
    checkRect.addCoords( -3, -3, 1, 1 );

    // create a region from wich we'll subtract painted rects
    TQRegion remainingArea( contentsRect );

    //TQValueVector< PageViewItem * >::iterator iIt = d->visibleItems.begin(), iEnd = d->visibleItems.end();
    TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
    for ( ; iIt != iEnd; ++iIt )
    {
        // check if a piece of the page intersects the contents rect
        if ( !(*iIt)->geometry().intersects( checkRect ) )
            continue;

        PageViewItem * item = *iIt;
        TQRect pixmapGeometry = item->geometry();

        // translate the painter so we draw top-left pixmap corner in 0,0
        p->save();
        p->translate( pixmapGeometry.left(), pixmapGeometry.top() );

        // item pixmap and outline geometry
        TQRect outlineGeometry = pixmapGeometry;
        outlineGeometry.addCoords( -1, -1, 3, 3 );

        // draw the page outline (little black border and 2px shadow)
        if ( !pixmapGeometry.contains( contentsRect ) )
        {
            int pixmapWidth = pixmapGeometry.width(),
                pixmapHeight = pixmapGeometry.height();
            // draw simple outline
            p->setPen( TQt::black );
            p->drawRect( -1, -1, pixmapWidth + 2, pixmapHeight + 2 );
            // draw bottom/right gradient
            int levels = 2;
            int r = TQt::gray.red() / (levels + 2),
                g = TQt::gray.green() / (levels + 2),
                b = TQt::gray.blue() / (levels + 2);
            for ( int i = 0; i < levels; i++ )
            {
                p->setPen( TQColor( r * (i+2), g * (i+2), b * (i+2) ) );
                p->drawLine( i, i + pixmapHeight + 1, i + pixmapWidth + 1, i + pixmapHeight + 1 );
                p->drawLine( i + pixmapWidth + 1, i, i + pixmapWidth + 1, i + pixmapHeight );
                p->setPen( TQt::gray );
                p->drawLine( -1, i + pixmapHeight + 1, i - 1, i + pixmapHeight + 1 );
                p->drawLine( i + pixmapWidth + 1, -1, i + pixmapWidth + 1, i - 1 );
            }
        }

        // draw the pixmap (note: this modifies the painter)
        if ( contentsRect.intersects( pixmapGeometry ) )
        {
            TQRect pixmapRect = contentsRect.intersect( pixmapGeometry );
            pixmapRect.moveBy( -pixmapGeometry.left(), -pixmapGeometry.top() );
            int flags = PagePainter::Accessibility | PagePainter::EnhanceLinks |
                        PagePainter::EnhanceImages | PagePainter::Highlights;
            PagePainter::paintPageOnPainter( item->page(), PAGEVIEW_ID, flags, p, pixmapRect,
                                             pixmapGeometry.width(), pixmapGeometry.height() );
        }

        // remove painted area from 'remainingArea' and restore painter
        remainingArea -= outlineGeometry.intersect( contentsRect );
        p->restore();
    }

    // paint with background color the unpainted area
    TQMemArray<TQRect> backRects = remainingArea.rects();
    uint backRectsNumber = backRects.count();
    for ( uint jr = 0; jr < backRectsNumber; jr++ )
        p->fillRect( backRects[ jr ], TQt::gray );
}

void PageView::updateItemSize( PageViewItem * item, int colWidth, int rowHeight )
{
    const KPDFPage * kpdfPage = item->page();
    double width = kpdfPage->width(),
           height = kpdfPage->height(),
           zoom = d->zoomFactor;

    if ( d->zoomMode == ZoomFixed )
    {
        width *= zoom;
        height *= zoom;
        item->setWHZ( (int)width, (int)height, d->zoomFactor );
    }
    else if ( d->zoomMode == ZoomFitWidth )
    {
        height = kpdfPage->ratio() * colWidth;
        item->setWHZ( colWidth, (int)height, (double)colWidth / width );
        d->zoomFactor = (double)colWidth / width;
    }
    else if ( d->zoomMode == ZoomFitPage )
    {
        double scaleW = (double)colWidth / (double)width;
        double scaleH = (double)rowHeight / (double)height;
        zoom = TQMIN( scaleW, scaleH );
        item->setWHZ( (int)(zoom * width), (int)(zoom * height), zoom );
        d->zoomFactor = zoom;
    }
#ifndef NDEBUG
    else
        kdDebug() << "calling updateItemSize with unrecognized d->zoomMode!" << endl;
#endif
}

PageViewItem * PageView::pickItemOnPoint( int x, int y )
{
    PageViewItem * item = 0;
    TQValueList< PageViewItem * >::iterator iIt = d->visibleItems.begin(), iEnd = d->visibleItems.end();
    for ( ; iIt != iEnd; ++iIt )
    {
        PageViewItem * i = *iIt;
        const TQRect & r = i->geometry();
        if ( x < r.right() && x > r.left() && y < r.bottom() )
        {
            if ( y > r.top() )
                item = i;
            break;
        }
    }
    return item;
}

void PageView::selectionStart( int x, int y, const TQColor & color, bool /*aboveAll*/ )
{
    d->mouseSelectionRect.setRect( x, y, 1, 1 );
    d->selectionRectColor = color;
    // ensures page doesn't scroll
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }
}

void PageView::selectionEndPoint( int x, int y )
{
    if (x < contentsX()) d->dragScrollVector.setX(x - contentsX());
    else if (contentsX() + viewport()->width() < x) d->dragScrollVector.setX(x - contentsX() - viewport()->width());
    else d->dragScrollVector.setX(0);

    if (y < contentsY()) d->dragScrollVector.setY(y - contentsY());
    else if (contentsY() + viewport()->height() < y) d->dragScrollVector.setY(y - contentsY() - viewport()->height());
    else d->dragScrollVector.setY(0);

    if (d->dragScrollVector != TQPoint(0, 0))
    {
       if (!d->dragScrollTimer.isActive()) d->dragScrollTimer.start(100);
    }
    else d->dragScrollTimer.stop();

    // clip selection to the viewport
    TQRect viewportRect( contentsX(), contentsY(), visibleWidth(), visibleHeight() );
    x = TQMAX( TQMIN( x, viewportRect.right() ), viewportRect.left() );
    y = TQMAX( TQMIN( y, viewportRect.bottom() ), viewportRect.top() );
    // if selection changed update rect
    if ( d->mouseSelectionRect.right() != x || d->mouseSelectionRect.bottom() != y )
    {
        // send incremental paint events
        TQRect oldRect = d->mouseSelectionRect.normalize();
        d->mouseSelectionRect.setRight( x );
        d->mouseSelectionRect.setBottom( y );
        TQRect newRect = d->mouseSelectionRect.normalize();
        // generate diff region: [ OLD.unite(NEW) - OLD.intersect(NEW) ]
        TQRegion compoundRegion = TQRegion( oldRect ).unite( newRect );
        if ( oldRect.intersects( newRect ) )
        {
            TQRect intersection = oldRect.intersect( newRect );
            intersection.addCoords( 1, 1, -1, -1 );
            if ( intersection.width() > 20 && intersection.height() > 20 )
                compoundRegion -= intersection;
        }
        // tassellate region with rects and enqueue paint events
        TQMemArray<TQRect> rects = compoundRegion.rects();
        for ( uint i = 0; i < rects.count(); i++ )
            updateContents( rects[i] );
    }
}

void PageView::selectionClear()
{
    updateContents( d->mouseSelectionRect.normalize() );
    d->mouseSelectionRect.setCoords( 0, 0, -1, -1 );
}

void PageView::updateZoom( ZoomMode newZoomMode )
{
    if ( newZoomMode == ZoomFixed )
    {
        if ( d->aZoom->currentItem() == 0 )
            newZoomMode = ZoomFitWidth;
        else if ( d->aZoom->currentItem() == 1 )
            newZoomMode = ZoomFitPage;
    }

    float newFactor = d->zoomFactor;
    KAction * checkedZoomAction = 0;
    switch ( newZoomMode )
    {
        case ZoomFixed:{ //ZoomFixed case
            TQString z = d->aZoom->currentText();
            newFactor = KGlobal::locale()->readNumber( z.remove( z.find( '%' ), 1 ) ) / 100.0;
            }break;
        case ZoomIn:
            newFactor += (newFactor > 0.99) ? ( newFactor > 1.99 ? 0.5 : 0.2 ) : 0.1;
            newZoomMode = ZoomFixed;
            break;
        case ZoomOut:
            newFactor -= (newFactor > 0.99) ? ( newFactor > 1.99 ? 0.5 : 0.2 ) : 0.1;
            newZoomMode = ZoomFixed;
            break;
        case ZoomFitWidth:
            checkedZoomAction = d->aZoomFitWidth;
            break;
        case ZoomFitPage:
            checkedZoomAction = d->aZoomFitPage;
            break;
        case ZoomFitText:
            checkedZoomAction = d->aZoomFitText;
            break;
        case ZoomRefreshCurrent:
            newZoomMode = ZoomFixed;
            d->zoomFactor = -1;
            break;
    }
    if ( newFactor > 4.0 )
        newFactor = 4.0;
    if ( newFactor < 0.1 )
        newFactor = 0.1;

    if ( newZoomMode != d->zoomMode || (newZoomMode == ZoomFixed && newFactor != d->zoomFactor ) )
    {
        // rebuild layout and update the whole viewport
        d->zoomMode = newZoomMode;
        d->zoomFactor = newFactor;
        // be sure to block updates to document's viewport
        bool prevState = d->blockViewport;
        d->blockViewport = true;
        slotRelayoutPages();
        d->blockViewport = prevState;
        // request pixmaps
        slotRequestVisiblePixmaps();
        // update zoom text
        updateZoomText();
        // update actions checked state
        d->aZoomFitWidth->setChecked( checkedZoomAction == d->aZoomFitWidth );
        d->aZoomFitPage->setChecked( checkedZoomAction == d->aZoomFitPage );
        d->aZoomFitText->setChecked( checkedZoomAction == d->aZoomFitText );
        
        // save selected zoom factor
        KpdfSettings::setZoomMode(newZoomMode);
        KpdfSettings::setZoomFactor(newFactor);
        KpdfSettings::writeConfig();
    }
}

void PageView::updateZoomText()
{
    // use current page zoom as zoomFactor if in ZoomFit/* mode
    if ( d->zoomMode != ZoomFixed && d->items.count() > 0 )
        d->zoomFactor = d->items[ TQMAX( 0, (int)d->document->currentPage() ) ]->zoomFactor();
    float newFactor = d->zoomFactor;
    d->aZoom->clear();

    // add items that describe fit actions
    TQStringList translated;
    translated << i18n("Fit Width") << i18n("Fit Page"); // << i18n("Fit Text");

    // add percent items
    TQString double_oh( "00" );
    const float zoomValue[10] = { 0.125, 0.25, 0.333, 0.5, 0.667, 0.75, 1, 1.25, 1.50, 2 };
    int idx = 0,
        selIdx = 2; // use 3 if "fit text" present
    bool inserted = false; //use: "d->zoomMode != ZoomFixed" to hide Fit/* zoom ratio
    while ( idx < 10 || !inserted )
    {
        float value = idx < 10 ? zoomValue[ idx ] : newFactor;
        if ( !inserted && newFactor < (value - 0.0001) )
            value = newFactor;
        else
            idx ++;
        if ( value > (newFactor - 0.0001) && value < (newFactor + 0.0001) )
            inserted = true;
        if ( !inserted )
            selIdx++;
        TQString localValue( KGlobal::locale()->formatNumber( value * 100.0, 2 ) );
        localValue.remove( KGlobal::locale()->decimalSymbol() + double_oh );
        translated << TQString( "%1%" ).arg( localValue );
    }
    d->aZoom->setItems( translated );

    // select current item in list
    if ( d->zoomMode == ZoomFitWidth )
        selIdx = 0;
    else if ( d->zoomMode == ZoomFitPage )
        selIdx = 1;
    else if ( d->zoomMode == ZoomFitText )
        selIdx = 2;
    d->aZoom->setCurrentItem( selIdx );
}

void PageView::updateCursor( const TQPoint &p )
{
    // detect the underlaying page (if present)
    PageViewItem * pageItem = pickItemOnPoint( p.x(), p.y() );
    if ( pageItem && d->mouseMode == MouseNormal )
    {
        double nX = (double)(p.x() - pageItem->geometry().left()) / (double)pageItem->width(),
               nY = (double)(p.y() - pageItem->geometry().top()) / (double)pageItem->height();

        // if over a ObjectRect (of type Link) change cursor to hand
        d->mouseOnRect = pageItem->page()->hasObject( ObjectRect::Link, nX, nY );
        if ( d->mouseOnRect )
            setCursor( KCursor::handCursor() );
        else
            setCursor( KCursor::arrowCursor() );
    }
    else
    {
        // if there's no page over the cursor and we were showing the pointingHandCursor
        // go back to the normal one
        d->mouseOnRect = false;
        setCursor( KCursor::arrowCursor() );
    }
}

void PageView::doTypeAheadSearch()
{
    bool found = d->document->searchText( PAGEVIEW_SEARCH_ID, d->typeAheadString, false, false,
                                          KPDFDocument::NextMatch, true, tqRgb( 128, 255, 128 ), true );
    TQString status = found ? i18n("Text found: \"%1\".") : i18n("Text not found: \"%1\".");
    d->messageWindow->display( status.arg(d->typeAheadString.lower()),
                               found ? PageViewMessage::Find : PageViewMessage::Warning, 4000 );
    d->findTimeoutTimer->start( 3000, true );
}

//BEGIN private SLOTS
void PageView::slotRelayoutPages()
// called by: notifySetup, viewportResizeEvent, slotTwoPagesToggled, slotContinuousToggled, updateZoom
{
    // set an empty container if we have no pages
    int pageCount = d->items.count();
    if ( pageCount < 1 )
    {
        resizeContents( 0, 0 );
        return;
    }

    // if viewport was auto-moving, stop it
    if ( d->viewportMoveActive )
    {
        d->viewportMoveActive = false;
        d->viewportMoveTimer->stop();
        verticalScrollBar()->setEnabled( true );
        horizontalScrollBar()->setEnabled( true );
    }

    // common iterator used in this method and viewport parameters
    TQValueVector< PageViewItem * >::iterator iIt, iEnd = d->items.end();
    int viewportWidth = visibleWidth(),
        viewportHeight = visibleHeight(),
        fullWidth = 0,
        fullHeight = 0;
    TQRect viewportRect( contentsX(), contentsY(), viewportWidth, viewportHeight );

    // set all items geometry and resize contents. handle 'continuous' and 'single' modes separately
    if ( KpdfSettings::viewContinuous() )
    {
        // Here we find out column's width and row's height to compute a table
        // so we can place widgets 'centered in virtual cells'.
        int nCols = KpdfSettings::viewColumns(),
            nRows = (int)ceil( (float)pageCount / (float)nCols ),
            * colWidth = new int[ nCols ],
            * rowHeight = new int[ nRows ],
            cIdx = 0,
            rIdx = 0;
        for ( int i = 0; i < nCols; i++ )
            colWidth[ i ] = viewportWidth / nCols;
        for ( int i = 0; i < nRows; i++ )
            rowHeight[ i ] = 0;

        // 1) find the maximum columns width and rows height for a grid in
        // which each page must well-fit inside a cell
        for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
        {
            PageViewItem * item = *iIt;
            // update internal page size (leaving a little margin in case of Fit* modes)
            updateItemSize( item, colWidth[ cIdx ] - 6, viewportHeight - 8 );
            // find row's maximum height and column's max width
            if ( item->width() + 6 > colWidth[ cIdx ] )
                colWidth[ cIdx ] = item->width() + 6;
            if ( item->height() > rowHeight[ rIdx ] )
                rowHeight[ rIdx ] = item->height();
            // update col/row indices
            if ( ++cIdx == nCols )
            {
                cIdx = 0;
                rIdx++;
            }
        }

        // 2) arrange widgets inside cells
        int insertX = 0,
            insertY = 4; // 2 + 4*d->zoomFactor ?
        cIdx = 0;
        rIdx = 0;
        for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
        {
            PageViewItem * item = *iIt;
            int cWidth = colWidth[ cIdx ],
                rHeight = rowHeight[ rIdx ];
            // center widget inside 'cells'
            item->moveTo( insertX + (cWidth - item->width()) / 2,
                          insertY + (rHeight - item->height()) / 2 );
            // advance col/row index
            insertX += cWidth;
            if ( ++cIdx == nCols )
            {
                cIdx = 0;
                rIdx++;
                insertX = 0;
                insertY += rHeight + 15; // 5 + 15*d->zoomFactor ?
            }
        }

        fullHeight = cIdx ? (insertY + rowHeight[ rIdx ] + 10) : insertY;
        for ( int i = 0; i < nCols; i++ )
            fullWidth += colWidth[ i ];

        delete [] colWidth;
        delete [] rowHeight;
    }
    else // viewContinuous is FALSE
    {
        PageViewItem * currentItem = d->items[ TQMAX( 0, (int)d->document->currentPage() ) ];

        // setup varialbles for a 1(row) x N(columns) grid
        int nCols = KpdfSettings::viewColumns(),
            * colWidth = new int[ nCols ],
            cIdx = 0;
        fullHeight = viewportHeight;
        for ( int i = 0; i < nCols; i++ )
            colWidth[ i ] = viewportWidth / nCols;

        // 1) find out maximum area extension for the pages
        for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
        {
            PageViewItem * item = *iIt;
            if ( item == currentItem || (cIdx > 0 && cIdx < nCols) )
            {
                // update internal page size (leaving a little margin in case of Fit* modes)
                updateItemSize( item, colWidth[ cIdx ] - 6, viewportHeight - 8 );
                // find row's maximum height and column's max width
                if ( item->width() + 6 > colWidth[ cIdx ] )
                    colWidth[ cIdx ] = item->width() + 6;
                if ( item->height() + 8 > fullHeight )
                    fullHeight = item->height() + 8;
                cIdx++;
            }
        }

        // 2) hide all widgets except the displayable ones and dispose those
        int insertX = 0;
        cIdx = 0;
        for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
        {
            PageViewItem * item = *iIt;
            if ( item == currentItem || (cIdx > 0 && cIdx < nCols) )
            {
                // center widget inside 'cells'
                item->moveTo( insertX + (colWidth[ cIdx ] - item->width()) / 2,
                              (fullHeight - item->height()) / 2 );
                // advance col index
                insertX += colWidth[ cIdx ];
                cIdx++;
            } else
                item->setGeometry( 0, 0, -1, -1 );
        }

        for ( int i = 0; i < nCols; i++ )
            fullWidth += colWidth[ i ];

        delete [] colWidth;
    }

    // 3) reset dirty state
    d->dirtyLayout = false;

    // 4) update scrollview's contents size and recenter view
    bool wasUpdatesEnabled = viewport()->isUpdatesEnabled();
    if ( fullWidth != contentsWidth() || fullHeight != contentsHeight() )
    {
        // disable updates and resize the viewportContents
        if ( wasUpdatesEnabled )
            viewport()->setUpdatesEnabled( false );
        resizeContents( fullWidth, fullHeight );
        // restore previous viewport if defined and updates enabled
        if ( wasUpdatesEnabled )
        {
            const DocumentViewport & vp = d->document->viewport();
            if ( vp.pageNumber >= 0 )
            {
                int prevX = contentsX(),
                    prevY = contentsY();
                const TQRect & geometry = d->items[ vp.pageNumber ]->geometry();
                double nX = vp.rePos.enabled ? vp.rePos.normalizedX : 0.5,
                       nY = vp.rePos.enabled ? vp.rePos.normalizedY : 0.0;
                center( geometry.left() + ROUND( nX * (double)geometry.width() ),
                        geometry.top() + ROUND( nY * (double)geometry.height() ) );
                // center() usually moves the viewport, that requests pixmaps too.
                // if that doesn't happen we have to request them by hand
                if ( prevX == contentsX() && prevY == contentsY() )
                    slotRequestVisiblePixmaps();
            }
            // or else go to center page
            else
                center( fullWidth / 2, 0 );
            viewport()->setUpdatesEnabled( true );
        }
    }

    // 5) update the whole viewport if updated enabled
    if ( wasUpdatesEnabled )
        updateContents();
}

void PageView::slotRequestVisiblePixmaps( int newLeft, int newTop )
{
    // if requests are blocked (because raised by an unwanted event), exit
    if ( d->blockPixmapsRequest || d->viewportMoveActive )
        return;

    // precalc view limits for intersecting with page coords inside the lOOp
    bool isEvent = newLeft != -1 && newTop != -1 && !d->blockViewport;
    TQRect viewportRect( isEvent ? newLeft : contentsX(),
                        isEvent ? newTop : contentsY(),
                        visibleWidth(), visibleHeight() );

    // some variables used to determine the viewport
    int nearPageNumber = -1;
    double viewportCenterX = (viewportRect.left() + viewportRect.right()) / 2.0,
           viewportCenterY = (viewportRect.top() + viewportRect.bottom()) / 2.0,
           focusedX = 0.5,
           focusedY = 0.0,
           minDistance = -1.0;

    // iterate over all items
    d->visibleItems.clear();
    TQValueList< PixmapRequest * > requestedPixmaps;
    TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
    for ( ; iIt != iEnd; ++iIt )
    {
        PageViewItem * i = *iIt;

        // if the item doesn't intersect the viewport, skip it
        if ( !viewportRect.intersects( i->geometry() ) )
            continue;

        // add the item to the 'visible list'
        d->visibleItems.push_back( i );

        // if the item has not the right pixmap, add a request for it
        if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) )
        {
            PixmapRequest * p = new PixmapRequest(
                    PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRIO, true, d->rotation );
            requestedPixmaps.push_back( p );
        }

        // look for the item closest to viewport center and the relative
        // position between the item and the viewport center
        if ( isEvent )
        {
            const TQRect & geometry = i->geometry();
            // compute distance between item center and viewport center
            double distance = hypot( (geometry.left() + geometry.right()) / 2 - viewportCenterX,
                                     (geometry.top() + geometry.bottom()) / 2 - viewportCenterY );
            if ( distance >= minDistance && nearPageNumber != -1 )
                continue;
            nearPageNumber = i->pageNumber();
            minDistance = distance;
            if ( geometry.height() > 0 && geometry.width() > 0 )
            {
                focusedX = ( viewportCenterX - (double)geometry.left() ) / (double)geometry.width();
                focusedY = ( viewportCenterY - (double)geometry.top() ) / (double)geometry.height();
            }
        }
    }

    // if preloading is enabled, add the pages before and after in preloading
    if ( !d->visibleItems.isEmpty() &&
         KpdfSettings::memoryLevel() != KpdfSettings::EnumMemoryLevel::Low &&
         KpdfSettings::enableThreading() )
    {
        // as the requests are done in the order as they appear in the list,
        // request first the next page and then the previous

        // add the page after the 'visible series' in preload
        int tailRequest = d->visibleItems.last()->pageNumber() + 1;
        if ( tailRequest < (int)d->items.count() )
        {
            PageViewItem * i = d->items[ tailRequest ];
            // request the pixmap if not already present
            if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
                requestedPixmaps.push_back( new PixmapRequest(
                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true, d->rotation ) );
        }

        // add the page before the 'visible series' in preload
        int headRequest = d->visibleItems.first()->pageNumber() - 1;
        if ( headRequest >= 0 )
        {
            PageViewItem * i = d->items[ headRequest ];
            // request the pixmap if not already present
            if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
                requestedPixmaps.push_back( new PixmapRequest(
                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true, d->rotation ) );
        }
    }

    // send requests to the document
    if ( !requestedPixmaps.isEmpty() )
        d->document->requestPixmaps( requestedPixmaps );

    // if this functions was invoked by viewport events, send update to document
    if ( isEvent && nearPageNumber != -1 )
    {
        // determine the document viewport
        DocumentViewport newViewport( nearPageNumber );
        newViewport.rePos.enabled = true;
        newViewport.rePos.normalizedX = focusedX;
        newViewport.rePos.normalizedY = focusedY;
        // set the viewport to other observers
        d->document->setViewport( newViewport , PAGEVIEW_ID);
    }
}

void PageView::slotMoveViewport()
{
    // converge to viewportMoveDest in 1 second
    int diffTime = d->viewportMoveTime.elapsed();
    if ( diffTime >= 667 || !d->viewportMoveActive )
    {
        center( d->viewportMoveDest.x(), d->viewportMoveDest.y() );
        d->viewportMoveTimer->stop();
        d->viewportMoveActive = false;
        slotRequestVisiblePixmaps();
        verticalScrollBar()->setEnabled( true );
        horizontalScrollBar()->setEnabled( true );
        return;
    }

    // move the viewport smoothly (kmplot: p(x)=x+x*(1-x)*(1-x))
    float convergeSpeed = (float)diffTime / 667.0,
          x = ((float)visibleWidth() / 2.0) + contentsX(),
          y = ((float)visibleHeight() / 2.0) + contentsY(),
          diffX = (float)d->viewportMoveDest.x() - x,
          diffY = (float)d->viewportMoveDest.y() - y;
    convergeSpeed *= convergeSpeed * (1.4 - convergeSpeed);
    center( (int)(x + diffX * convergeSpeed),
            (int)(y + diffY * convergeSpeed ) );
}

void PageView::slotAutoScoll()
{
    // the first time create the timer
    if ( !d->autoScrollTimer )
    {
        d->autoScrollTimer = new TQTimer( this );
        connect( d->autoScrollTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( slotAutoScoll() ) );
    }

    // if scrollIncrement is zero, stop the timer
    if ( !d->scrollIncrement )
    {
        d->autoScrollTimer->stop();
        return;
    }

    // compute delay between timer ticks and scroll amount per tick
    int index = abs( d->scrollIncrement ) - 1;  // 0..9
    const int scrollDelay[10] =  { 200, 100, 50, 30, 20, 30, 25, 20, 30, 20 };
    const int scrollOffset[10] = {   1,   1,  1,  1,  1,  2,  2,  2,  4,  4 };
    d->autoScrollTimer->changeInterval( scrollDelay[ index ] );
    scrollBy( 0, d->scrollIncrement > 0 ? scrollOffset[ index ] : -scrollOffset[ index ] );
}

void PageView::slotDragScroll()
{
    scrollBy(d->dragScrollVector.x(), d->dragScrollVector.y());
    TQPoint p = viewportToContents( mapFromGlobal( TQCursor::pos() ) );
    selectionEndPoint( p.x(), p.y() );
}

void PageView::findAheadStop()
{
    d->typeAheadActive = false;
    d->typeAheadString = "";
    d->messageWindow->display( i18n("Find stopped."), PageViewMessage::Find, 1000 );
    // it is needed to grab the keyboard becase people may have Space assigned to a 
    // accel and without grabbing the keyboard you can not vim-search for space
    // because it activates the accel
    releaseKeyboard();
}

void PageView::slotShowWelcome()
{
    // show initial welcome text
    d->messageWindow->display( i18n( "Welcome" ), PageViewMessage::Info, 2000 );
}

void PageView::slotZoom()
{
    setFocus();
    updateZoom( ZoomFixed );
}

void PageView::slotZoomIn()
{
    updateZoom( ZoomIn );
}

void PageView::slotZoomOut()
{
    updateZoom( ZoomOut );
}

void PageView::slotFitToWidthToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitWidth );
}

void PageView::slotFitToPageToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitPage );
}

void PageView::slotFitToTextToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitText );
}

void PageView::slotRotateRight()
{
    d->rotation = ( d->rotation + 90 ) % 360;

    TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
    for ( ; iIt != iEnd; ++iIt )
    {
        int r = const_cast<KPDFPage*>((*iIt)->page())->rotation();
        r = ( r + 90 ) % 360;

        const_cast<KPDFPage*>((*iIt)->page())->rotate90degrees();
    }

    // be sure to block updates to document's viewport
    bool prevState = d->blockViewport;
    d->blockViewport = true;
    slotRelayoutPages();
    d->blockViewport = prevState;
    // request pixmaps
    slotRequestVisiblePixmaps();
}

void PageView::slotRotateLeft()
{
    d->rotation -= 90;
    if ( d->rotation < 0 ) d->rotation += 360;

    TQValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
    for ( ; iIt != iEnd; ++iIt )
    {
        int r = const_cast<KPDFPage*>((*iIt)->page())->rotation();
        r -= 90;
        if ( r < 0 ) r += 360;

        const_cast<KPDFPage*>((*iIt)->page())->rotate90degrees();
    }

    // be sure to block updates to document's viewport
    bool prevState = d->blockViewport;
    d->blockViewport = true;
    slotRelayoutPages();
    d->blockViewport = prevState;
    // request pixmaps
    slotRequestVisiblePixmaps();
}

void PageView::slotTwoPagesToggled( bool on )
{
    uint newColumns = on ? 2 : 1;
    if ( KpdfSettings::viewColumns() != newColumns )
    {
        KpdfSettings::setViewColumns( newColumns );
        KpdfSettings::writeConfig();
        if ( d->document->pages() > 0 )
            slotRelayoutPages();
    }
}

void PageView::slotContinuousToggled( bool on )
{
    if ( KpdfSettings::viewContinuous() != on )
    {
        KpdfSettings::setViewContinuous( on );
        KpdfSettings::writeConfig();
        if ( d->document->pages() > 0 )
            slotRelayoutPages();
    }
}

void PageView::slotSetMouseNormal()
{
    d->mouseMode = MouseNormal;
    d->messageWindow->hide();
}

void PageView::slotSetMouseZoom()
{
    d->mouseMode = MouseZoom;
    d->messageWindow->display( i18n( "Select zooming area. Right-click to zoom out." ), PageViewMessage::Info, -1 );
}

void PageView::slotSetMouseSelect()
{
    d->mouseMode = MouseSelect;
    d->messageWindow->display( i18n( "Draw a rectangle around the text/graphics to copy." ), PageViewMessage::Info, -1 );
}

void PageView::slotSetMouseDraw()
{
    d->mouseMode = MouseEdit;
    d->aMouseEdit->setChecked( true );
    d->messageWindow->hide();
}

void PageView::slotScrollUp()
{
    if ( d->scrollIncrement < -9 )
        return;
    d->scrollIncrement--;
    slotAutoScoll();
    setFocus();
}

void PageView::slotScrollDown()
{
    if ( d->scrollIncrement > 9 )
        return;
    d->scrollIncrement++;
    slotAutoScoll();
    setFocus();
}
//END private SLOTS

#include "pageview.moc"