summaryrefslogtreecommitdiffstats
path: root/kolourpaint/kpmainwindow_view.cpp
blob: d700f427f63f9f7f4b1e8b8821a09bbd7290c7cf (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

/*
   Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions
   are met:

   1. Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
   2. Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.

   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#define DEBUG_ZOOM_FLICKER 0

#include <kpmainwindow.h>
#include <kpmainwindow_p.h>

#include <tqdatetime.h>
#include <tqpainter.h>
#include <tqtimer.h>

#include <tdeactionclasses.h>
#include <tdeapplication.h>
#include <tdeconfig.h>
#include <kdebug.h>
#include <klocale.h>
#include <kstdaction.h>

#include <kpdefs.h>
#include <kpdocument.h>
#include <kpthumbnail.h>
#include <kptool.h>
#include <kptooltoolbar.h>
#include <kpunzoomedthumbnailview.h>
#include <kpviewmanager.h>
#include <kpviewscrollablecontainer.h>
#include <kpwidgetmapper.h>
#include <kpzoomedview.h>
#include <kpzoomedthumbnailview.h>


// private
void kpMainWindow::setupViewMenuActions ()
{
    m_viewMenuDocumentActionsEnabled = false;
    m_thumbnailSaveConfigTimer = 0;


    TDEActionCollection *ac = actionCollection ();

    /*m_actionFullScreen = KStdAction::fullScreen (0, 0, ac);
    m_actionFullScreen->setEnabled (false);*/


    m_actionActualSize = KStdAction::actualSize (TQT_TQOBJECT(this), TQT_SLOT (slotActualSize ()), ac);
    /*m_actionFitToPage = KStdAction::fitToPage (TQT_TQOBJECT(this), TQT_SLOT (slotFitToPage ()), ac);
    m_actionFitToWidth = KStdAction::fitToWidth (TQT_TQOBJECT(this), TQT_SLOT (slotFitToWidth ()), ac);
    m_actionFitToHeight = KStdAction::fitToHeight (TQT_TQOBJECT(this), TQT_SLOT (slotFitToHeight ()), ac);*/


    m_actionZoomIn = KStdAction::zoomIn (TQT_TQOBJECT(this), TQT_SLOT (slotZoomIn ()), ac);
    m_actionZoomOut = KStdAction::zoomOut (TQT_TQOBJECT(this), TQT_SLOT (slotZoomOut ()), ac);


    m_actionZoom = new TDESelectAction (i18n ("&Zoom"), 0,
        TQT_TQOBJECT(this), TQT_SLOT (slotZoom ()), actionCollection (), "view_zoom_to");
    m_actionZoom->setEditable (true);

    // create the zoom list for the 1st call to zoomTo() below
    m_zoomList.append (10); m_zoomList.append (25); m_zoomList.append (33);
    m_zoomList.append (50); m_zoomList.append (67); m_zoomList.append (75);
    m_zoomList.append (100);
    m_zoomList.append (200); m_zoomList.append (300);
    m_zoomList.append (400); m_zoomList.append (600); m_zoomList.append (800);
    m_zoomList.append (1000); m_zoomList.append (1200); m_zoomList.append (1600);


    m_actionShowGrid = new TDEToggleAction (i18n ("Show &Grid"), CTRL + Key_G,
        TQT_TQOBJECT(this), TQT_SLOT (slotShowGridToggled ()), actionCollection (), "view_show_grid");
    m_actionShowGrid->setCheckedState (i18n ("Hide &Grid"));


    // TODO: This doesn't work when the thumbnail has focus.
    //       Testcase: Press CTRL+H twice on a fresh KolourPaint.
    //                 The second CTRL+H doesn't close the thumbnail.
    m_actionShowThumbnail = new TDEToggleAction (i18n ("Show T&humbnail"), CTRL + Key_H,
        TQT_TQOBJECT(this), TQT_SLOT (slotShowThumbnailToggled ()), actionCollection (), "view_show_thumbnail");
    m_actionShowThumbnail->setCheckedState (i18n ("Hide T&humbnail"));

    // Please do not use setCheckedState() here - it wouldn't make sense
    m_actionZoomedThumbnail = new TDEToggleAction (i18n ("Zoo&med Thumbnail Mode"), 0,
        TQT_TQOBJECT(this), TQT_SLOT (slotZoomedThumbnailToggled ()), actionCollection (), "view_zoomed_thumbnail");

    // For consistency with the above action, don't use setCheckedState()
    //
    // Also, don't use "Show Thumbnail Rectangle" because if entire doc
    // can be seen in scrollView, checking option won't "Show" anything
    // since rect _surrounds_ entire doc (hence, won't be rendered).
    d->m_actionShowThumbnailRectangle = new TDEToggleAction (
        i18n ("Enable Thumbnail &Rectangle"),
        0,
        TQT_TQOBJECT(this), TQT_SLOT (slotThumbnailShowRectangleToggled ()),
        actionCollection (), "view_show_thumbnail_rectangle");


    enableViewMenuDocumentActions (false);
}

// private
bool kpMainWindow::viewMenuDocumentActionsEnabled () const
{
    return m_viewMenuDocumentActionsEnabled;
}

// private
void kpMainWindow::enableViewMenuDocumentActions (bool enable)
{
    m_viewMenuDocumentActionsEnabled = enable;


    m_actionActualSize->setEnabled (enable);
    /*m_actionFitToPage->setEnabled (enable);
    m_actionFitToWidth->setEnabled (enable);
    m_actionFitToHeight->setEnabled (enable);*/

    m_actionZoomIn->setEnabled (enable);
    m_actionZoomOut->setEnabled (enable);

    m_actionZoom->setEnabled (enable);

    actionShowGridUpdate ();

    m_actionShowThumbnail->setEnabled (enable);
    enableThumbnailOptionActions (enable);


    // TODO: for the time being, assume that we start at zoom 100%
    //       with no grid

    // This function is only called when a new document is created
    // or an existing document is closed.  So the following will
    // always be correct:

    zoomTo (100);
}

// private
void kpMainWindow::actionShowGridUpdate ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::actionShowGridUpdate()" << endl;
#endif
    const bool enable = (viewMenuDocumentActionsEnabled () &&
                         m_mainView && m_mainView->canShowGrid ());

    m_actionShowGrid->setEnabled (enable);
    m_actionShowGrid->setChecked (enable && m_configShowGrid);
}


// private
void kpMainWindow::sendZoomListToActionZoom ()
{
    TQStringList items;

    const TQValueVector <int>::ConstIterator zoomListEnd (m_zoomList.end ());
    for (TQValueVector <int>::ConstIterator it = m_zoomList.begin ();
         it != zoomListEnd;
         it++)
    {
        items << zoomLevelToString (*it);
    }

    // Work around a KDE bug - TDESelectAction::setItems() enables the action.
    // David Faure said it won't be fixed because it's a feature used by
    // TDERecentFilesAction.
    bool e = m_actionZoom->isEnabled ();
    m_actionZoom->setItems (items);
    if (e != m_actionZoom->isEnabled ())
        m_actionZoom->setEnabled (e);
}

// private
int kpMainWindow::zoomLevelFromString (const TQString &string)
{
    // loop until not digit
    int i;
    for (i = 0; i < (int) string.length () && string.at (i).isDigit (); i++)
        ;

    // convert zoom level to number
    bool ok = false;
    int zoomLevel = string.left (i).toInt (&ok);

    if (!ok || zoomLevel <= 0 || zoomLevel > 3200)
        return 0;  // error
    else
        return zoomLevel;
}

// private
TQString kpMainWindow::zoomLevelToString (int zoomLevel)
{
    return i18n ("%1%").arg (zoomLevel);
}

// private
void kpMainWindow::zoomTo (int zoomLevel, bool centerUnderCursor)
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::zoomTo (" << zoomLevel << ")" << endl;
#endif

    if (zoomLevel <= 0)
        zoomLevel = m_mainView ? m_mainView->zoomLevelX () : 100;

// mute point since the thumbnail suffers from this too
#if 0
    else if (m_mainView && m_mainView->zoomLevelX () % 100 == 0 && zoomLevel % 100)
    {
        if (KMessageBox::warningContinueCancel (this,
            i18n ("Setting the zoom level to a value that is not a multiple of 100% "
                  "results in imprecise editing and redraw glitches.\n"
                  "Do you really want to set to zoom level to %1%?")
                .arg (zoomLevel),
            TQString()/*caption*/,
            i18n ("Set Zoom Level to %1%").arg (zoomLevel),
            "DoNotAskAgain_ZoomLevelNotMultipleOf100") != KMessageBox::Continue)
        {
            zoomLevel = m_mainView->zoomLevelX ();
        }
    }
#endif

    int index = 0;
    TQValueVector <int>::Iterator it = m_zoomList.begin ();

    while (index < (int) m_zoomList.count () && zoomLevel > *it)
        it++, index++;

    if (zoomLevel != *it)
        m_zoomList.insert (it, zoomLevel);

    sendZoomListToActionZoom ();
    m_actionZoom->setCurrentItem (index);


    if (viewMenuDocumentActionsEnabled ())
    {
        m_actionActualSize->setEnabled (zoomLevel != 100);

        m_actionZoomIn->setEnabled (m_actionZoom->currentItem () < (int) m_zoomList.count () - 1);
        m_actionZoomOut->setEnabled (m_actionZoom->currentItem () > 0);
    }


    if (m_viewManager)
        m_viewManager->setQueueUpdates ();


    if (m_scrollView)
    {
        m_scrollView->setUpdatesEnabled (false);
        if (m_scrollView->viewport ())
            m_scrollView->viewport ()->setUpdatesEnabled (false);
    }

    if (m_mainView)
    {
        m_mainView->setUpdatesEnabled (false);

        if (m_scrollView && m_scrollView->viewport ())
        {
            // Ordinary flicker is better than the whole view moving
            TQPainter p (m_mainView);
            p.fillRect (m_mainView->rect (),
                        m_scrollView->viewport ()->colorGroup ().background ());
        }
    }


    if (m_scrollView && m_mainView)
    {
    #if DEBUG_KP_MAIN_WINDOW && 1
        kdDebug () << "\tscrollView   contentsX=" << m_scrollView->contentsX ()
                   << " contentsY=" << m_scrollView->contentsY ()
                   << " contentsWidth=" << m_scrollView->contentsWidth ()
                   << " contentsHeight=" << m_scrollView->contentsHeight ()
                   << " visibleWidth=" << m_scrollView->visibleWidth ()
                   << " visibleHeight=" << m_scrollView->visibleHeight ()
                   << " oldZoomX=" << m_mainView->zoomLevelX ()
                   << " oldZoomY=" << m_mainView->zoomLevelY ()
                   << " newZoom=" << zoomLevel
                   << " mainViewX=" << m_scrollView->childX (m_mainView)
                   << " mainViewY=" << m_scrollView->childY (m_mainView)
                  << endl;
    #endif

        // TODO: when changing from no scrollbars to scrollbars, TQt lies about
        //       visibleWidth() & visibleHeight() (doesn't take into account the
        //       space taken by the would-be scrollbars) until it updates the
        //       scrollview; hence the centring is off by about 5-10 pixels.

        // TODO: use visibleRect() for greater accuracy?
        
        int viewX, viewY;
        
        bool targetDocAvail = false;
        double targetDocX, targetDocY;
        
        if (centerUnderCursor &&
            m_viewManager && m_viewManager->viewUnderCursor ())
        {
            kpView *const vuc = m_viewManager->viewUnderCursor ();
            TQPoint viewPoint = vuc->mouseViewPoint ();
        
            // vuc->transformViewToDoc() returns TQPoint which only has int
            // accuracy so we do X and Y manually.
            targetDocX = vuc->transformViewToDocX (viewPoint.x ());
            targetDocY = vuc->transformViewToDocY (viewPoint.y ());
            targetDocAvail = true;
                    
            if (vuc != m_mainView)
                viewPoint = vuc->transformViewToOtherView (viewPoint, m_mainView);
            
            viewX = viewPoint.x ();
            viewY = viewPoint.y ();
        }
        else
        {
            viewX = m_scrollView->contentsX () +
                        TQMIN (m_mainView->width (),
                              m_scrollView->visibleWidth ()) / 2;
            viewY = m_scrollView->contentsY () +
                        TQMIN (m_mainView->height (),
                              m_scrollView->visibleHeight ()) / 2;
        }
        
        int newCenterX = viewX * zoomLevel / m_mainView->zoomLevelX ();
        int newCenterY = viewY * zoomLevel / m_mainView->zoomLevelY ();

        m_mainView->setZoomLevel (zoomLevel, zoomLevel);
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just setZoomLevel" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif

    #if DEBUG_KP_MAIN_WINDOW && 1
        kdDebug () << "\tvisibleWidth=" << m_scrollView->visibleWidth ()
                    << " visibleHeight=" << m_scrollView->visibleHeight ()
                    << endl;
        kdDebug () << "\tnewCenterX=" << newCenterX
                    << " newCenterY=" << newCenterY << endl;
    #endif

        m_scrollView->center (newCenterX, newCenterY);
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just centred" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 2000)
            ;
    }
    #endif

        if (centerUnderCursor &&
            targetDocAvail &&
            m_viewManager && m_viewManager->viewUnderCursor ())
        {
            kpView *const vuc = m_viewManager->viewUnderCursor ();
            
        #if DEBUG_KP_MAIN_WINDOW
            kdDebug () << "\tcenterUnderCursor: reposition cursor; viewUnderCursor="
                       << vuc->name () << endl;
        #endif
        
            const double viewX = vuc->transformDocToViewX (targetDocX);
            const double viewY = vuc->transformDocToViewY (targetDocY);
            // Rounding error from zooming in and out :(
            // TODO: do everything in terms of tool doc points in type "double".
            const TQPoint viewPoint ((int) viewX, (int) viewY);
        #if DEBUG_KP_MAIN_WINDOW
            kdDebug () << "\t\tdoc: (" << targetDocX << "," << targetDocY << ")"
                       << " viewUnderCursor: (" << viewX << "," << viewY << ")"
                       << endl; 
        #endif
        
            if (vuc->clipRegion ().contains (viewPoint))
            {
                const TQPoint globalPoint =
                    kpWidgetMapper::toGlobal (vuc, viewPoint);
            #if DEBUG_KP_MAIN_WINDOW
                kdDebug () << "\t\tglobalPoint=" << globalPoint << endl;
            #endif
                
                // TODO: Determine some sane cursor flashing indication -
                //       cursor movement is convenient but not conventional.
                //
                //       Major problem: if using TQApplication::setOverrideCursor()
                //           and in some stage of flash and window quits.
                //
                //           Or if using kpView::setCursor() and change tool.
                TQCursor::setPos (globalPoint);
            }
            // e.g. Zoom to 200%, scroll mainView to bottom-right.
            // Unzoomed Thumbnail shows top-left portion of bottom-right of
            // mainView.
            //
            // Aim cursor at bottom-right of thumbnail and zoom out with
            // CTRL+Wheel.
            //
            // If mainView is now small enough to largely not need scrollbars,
            // Unzoomed Thumbnail scrolls to show _top-left_ portion
            // _of top-left_ of mainView.
            //
            // Unzoomed Thumbnail no longer contains the point we zoomed out
            // on top of.
            else
            {
            #if DEBUG_KP_MAIN_WINDOW
                kdDebug () << "\t\twon't move cursor - would get outside view"
                           << endl;
            #endif
            
                // TODO: Sane cursor flashing indication that indicates
                //       that the normal cursor movement didn't happen.
            }
        }
        
    #if DEBUG_KP_MAIN_WINDOW && 1
        kdDebug () << "\t\tcheck (contentsX=" << m_scrollView->contentsX ()
                    << ",contentsY=" << m_scrollView->contentsY ()
                    << ")" << endl;
    #endif
    }

    if (m_mainView)
    {
        actionShowGridUpdate ();
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: updated grid action" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif


        updateMainViewGrid ();
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just updated grid" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif


        // Since Zoom Level TDESelectAction on ToolBar grabs focus after changing
        // Zoom, switch back to the Main View.
        // TODO: back to the last view
        m_mainView->setFocus ();
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just set focus to mainview" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif

    }
#if 1
    // The view magnified and moved beneath the cursor
    if (tool ())
        tool ()->somethingBelowTheCursorChanged ();
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: signalled something below cursor" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif
#endif

    // HACK: make sure all of TQt's update() calls trigger
    //       kpView::paintEvent() _now_ so that they can be queued by us
    //       (until kpViewManager::restoreQueueUpdates()) to reduce flicker
    //       caused mainly by m_scrollView->center()
    //
    // TODO: remove flicker completely
    //TQTimer::singleShot (0, TQT_TQOBJECT(this), TQT_SLOT (finishZoomTo ()));

    // Later: I don't think there is an update() that needs to be queued
    //        - let's reduce latency instead.
    finishZoomTo ();
}

// private slot
void kpMainWindow::finishZoomTo ()
{
#if DEBUG_KP_MAIN_WINDOW && 1
    kdDebug () << "\tkpMainWindow::finishZoomTo enter" << endl;
#endif

#if DEBUG_ZOOM_FLICKER
{
    kdDebug () << "FLICKER: inside finishZoomTo" << endl;
    TQTime timer; timer.start ();
    while (timer.elapsed () < 2000)
        ;
}
#endif

    // TODO: setUpdatesEnabled() should really return to old value
    //       - not neccessarily "true"

    if (m_mainView)
    {
        m_mainView->setUpdatesEnabled (true);
        m_mainView->update ();
    }

#if DEBUG_ZOOM_FLICKER
{
    kdDebug () << "FLICKER: just updated mainView" << endl;
    TQTime timer; timer.start ();
    while (timer.elapsed () < 1000)
        ;
}
#endif

    if (m_scrollView)
    {
        if (m_scrollView->viewport ())
        {
            m_scrollView->viewport ()->setUpdatesEnabled (true);
            m_scrollView->viewport ()->update ();
        }
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just updated scrollView::viewport()" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif

        m_scrollView->setUpdatesEnabled (true);
        m_scrollView->update ();
    #if DEBUG_ZOOM_FLICKER
    {
        kdDebug () << "FLICKER: just updated scrollView" << endl;
        TQTime timer; timer.start ();
        while (timer.elapsed () < 1000)
            ;
    }
    #endif

    }


    if (m_viewManager && m_viewManager->queueUpdates ()/*just in case*/)
        m_viewManager->restoreQueueUpdates ();
#if DEBUG_ZOOM_FLICKER
{
    kdDebug () << "FLICKER: restored vm queued updates" << endl;
    TQTime timer; timer.start ();
    while (timer.elapsed () < 1000)
        ;
}
#endif

    setStatusBarZoom (m_mainView ? m_mainView->zoomLevelX () : 0);

#if DEBUG_KP_MAIN_WINDOW && 1
    kdDebug () << "\tkpMainWindow::finishZoomTo done" << endl;
#endif

#if DEBUG_ZOOM_FLICKER
{
    kdDebug () << "FLICKER: finishZoomTo done" << endl;
    TQTime timer; timer.start ();
    while (timer.elapsed () < 1000)
        ;
}
#endif
}


// private slot
void kpMainWindow::slotActualSize ()
{
    zoomTo (100);
}

// private slot
void kpMainWindow::slotFitToPage ()
{
    if (!m_scrollView || !m_document)
        return;

    // doc_width * zoom / 100 <= view_width &&
    // doc_height * zoom / 100 <= view_height &&
    // 1 <= zoom <= 3200

    zoomTo (TQMIN (3200, TQMAX (1, TQMIN (m_scrollView->visibleWidth () * 100 / m_document->width (),
                              m_scrollView->visibleHeight () * 100 / m_document->height ()))));
}

// private slot
void kpMainWindow::slotFitToWidth ()
{
    if (!m_scrollView || !m_document)
        return;

    // doc_width * zoom / 100 <= view_width &&
    // 1 <= zoom <= 3200

    zoomTo (TQMIN (3200, TQMAX (1, m_scrollView->visibleWidth () * 100 / m_document->width ())));
}

// private slot
void kpMainWindow::slotFitToHeight ()
{
    if (!m_scrollView || !m_document)
        return;

    // doc_height * zoom / 100 <= view_height &&
    // 1 <= zoom <= 3200

    zoomTo (TQMIN (3200, TQMAX (1, m_scrollView->visibleHeight () * 100 / m_document->height ())));
}


// public
void kpMainWindow::zoomIn (bool centerUnderCursor)
{    
    const int targetItem = m_actionZoom->currentItem () + 1;
    
    if (targetItem >= (int) m_zoomList.count ())
        return;
        
    m_actionZoom->setCurrentItem (targetItem);
    zoomAccordingToZoomAction (centerUnderCursor);
}

// public
void kpMainWindow::zoomOut (bool centerUnderCursor)
{    
    const int targetItem = m_actionZoom->currentItem () - 1;
    
    if (targetItem < 0)
        return;
        
    m_actionZoom->setCurrentItem (targetItem);
    zoomAccordingToZoomAction (centerUnderCursor);
}


// public slot
void kpMainWindow::slotZoomIn ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotZoomIn ()" << endl;
#endif

    zoomIn (false/*don't center under cursor*/);
}

// public slot
void kpMainWindow::slotZoomOut ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotZoomOut ()" << endl;
#endif

    zoomOut (false/*don't center under cursor*/);
}


// public
void kpMainWindow::zoomAccordingToZoomAction (bool centerUnderCursor)
{
    zoomTo (zoomLevelFromString (m_actionZoom->currentText ()),
                                 centerUnderCursor);
}

// private slot
void kpMainWindow::slotZoom ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotZoom () index=" << m_actionZoom->currentItem ()
               << " text='" << m_actionZoom->currentText () << "'" << endl;
#endif
    zoomAccordingToZoomAction (false/*don't center under cursor*/);
}


// private slot
void kpMainWindow::slotShowGridToggled ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotActionShowGridToggled()" << endl;
#endif

    updateMainViewGrid ();


    TDEConfigGroupSaver cfgGroupSaver (kapp->config (), kpSettingsGroupGeneral);
    TDEConfigBase *cfg = cfgGroupSaver.config ();

    cfg->writeEntry (kpSettingShowGrid, m_configShowGrid = m_actionShowGrid->isChecked ());
    cfg->sync ();
}

// private
void kpMainWindow::updateMainViewGrid ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::updateMainViewGrid ()" << endl;
#endif

    if (m_mainView)
        m_mainView->showGrid (m_actionShowGrid->isChecked ());
}


// private
TQRect kpMainWindow::mapToGlobal (const TQRect &rect) const
{
    return kpWidgetMapper::toGlobal (this, rect);
}

// private
TQRect kpMainWindow::mapFromGlobal (const TQRect &rect) const
{
    return kpWidgetMapper::fromGlobal (this, rect);
}


// public slot
void kpMainWindow::slotDestroyThumbnailIfNotVisible (bool tnIsVisible)
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotDestroyThumbnailIfNotVisible(isVisible="
               << tnIsVisible
               << ")"
               << endl;
#endif

    if (!tnIsVisible)
    {
        slotDestroyThumbnailInitatedByUser ();
    }
}

// private slot
void kpMainWindow::slotDestroyThumbnail ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotDestroyThumbnail()" << endl;
#endif

    m_actionShowThumbnail->setChecked (false);
    enableThumbnailOptionActions (false);
    updateThumbnail ();
}

// private slot
void kpMainWindow::slotDestroyThumbnailInitatedByUser ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotDestroyThumbnailInitiatedByUser()" << endl;
#endif

    m_actionShowThumbnail->setChecked (false);
    slotShowThumbnailToggled ();
}

// private slot
void kpMainWindow::slotCreateThumbnail ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotCreateThumbnail()" << endl;
#endif

    m_actionShowThumbnail->setChecked (true);
    enableThumbnailOptionActions (true);
    updateThumbnail ();
}

// public
void kpMainWindow::notifyThumbnailGeometryChanged ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::notifyThumbnailGeometryChanged()" << endl;
#endif

    if (!m_thumbnailSaveConfigTimer)
    {
        m_thumbnailSaveConfigTimer = new TQTimer (this);
        connect (m_thumbnailSaveConfigTimer, TQT_SIGNAL (timeout ()),
                 TQT_TQOBJECT(this), TQT_SLOT (slotSaveThumbnailGeometry ()));
    }

    m_thumbnailSaveConfigTimer->start (500/*msec*/, true/*single shot*/);
}

// private slot
void kpMainWindow::slotSaveThumbnailGeometry ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::saveThumbnailGeometry()" << endl;
#endif

    if (!m_thumbnail)
        return;

    TQRect rect (m_thumbnail->x (), m_thumbnail->y (),
                m_thumbnail->width (), m_thumbnail->height ());
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\tthumbnail relative geometry=" << rect << endl;
#endif

    m_configThumbnailGeometry = mapFromGlobal (rect);

#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\tCONFIG: saving thumbnail geometry "
                << m_configThumbnailGeometry
                << endl;
#endif

    TDEConfigGroupSaver cfgGroupSaver (kapp->config (), kpSettingsGroupThumbnail);
    TDEConfigBase *cfg = cfgGroupSaver.config ();

    cfg->writeEntry (kpSettingThumbnailGeometry, m_configThumbnailGeometry);
    cfg->sync ();
}

// private slot
void kpMainWindow::slotShowThumbnailToggled ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotShowThumbnailToggled()" << endl;
#endif

    m_configThumbnailShown = m_actionShowThumbnail->isChecked ();

    TDEConfigGroupSaver cfgGroupSaver (kapp->config (), kpSettingsGroupThumbnail);
    TDEConfigBase *cfg = cfgGroupSaver.config ();

    cfg->writeEntry (kpSettingThumbnailShown, m_configThumbnailShown);
    cfg->sync ();


    enableThumbnailOptionActions (m_actionShowThumbnail->isChecked ());
    updateThumbnail ();
}

// private slot
void kpMainWindow::updateThumbnailZoomed ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::updateThumbnailZoomed() zoomed="
               << m_actionZoomedThumbnail->isChecked () << endl;
#endif

    if (!m_thumbnailView)
        return;

    destroyThumbnailView ();
    createThumbnailView ();
}

// private slot
void kpMainWindow::slotZoomedThumbnailToggled ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotZoomedThumbnailToggled()" << endl;
#endif

    m_configZoomedThumbnail = m_actionZoomedThumbnail->isChecked ();

    TDEConfigGroupSaver cfgGroupSaver (kapp->config (), kpSettingsGroupThumbnail);
    TDEConfigBase *cfg = cfgGroupSaver.config ();

    cfg->writeEntry (kpSettingThumbnailZoomed, m_configZoomedThumbnail);
    cfg->sync ();


    updateThumbnailZoomed ();
}

// private slot
void kpMainWindow::slotThumbnailShowRectangleToggled ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::slotThumbnailShowRectangleToggled()" << endl;
#endif

    d->m_configThumbnailShowRectangle = d->m_actionShowThumbnailRectangle->isChecked ();

    TDEConfigGroupSaver cfgGroupSaver (kapp->config (), kpSettingsGroupThumbnail);
    TDEConfigBase *cfg = cfgGroupSaver.config ();

    cfg->writeEntry (kpSettingThumbnailShowRectangle, d->m_configThumbnailShowRectangle);
    cfg->sync ();


    if (m_thumbnailView)
    {
        m_thumbnailView->showBuddyViewScrollableContainerRectangle (
            d->m_actionShowThumbnailRectangle->isChecked ());
    }
}

// private
void kpMainWindow::enableViewZoomedThumbnail (bool enable)
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::enableSettingsViewZoomedThumbnail()" << endl;
#endif

    m_actionZoomedThumbnail->setEnabled (enable &&
        m_actionShowThumbnail->isChecked ());

    // Note: Don't uncheck if disabled - being able to see the zoomed state
    //       before turning on the thumbnail can be useful.
    m_actionZoomedThumbnail->setChecked (m_configZoomedThumbnail);
}

// private
void kpMainWindow::enableViewShowThumbnailRectangle (bool enable)
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::enableViewShowThumbnailRectangle()" << endl;
#endif

    d->m_actionShowThumbnailRectangle->setEnabled (enable &&
        m_actionShowThumbnail->isChecked ());

    // Note: Don't uncheck if disabled for consistency with
    //       enableViewZoomedThumbnail()
    d->m_actionShowThumbnailRectangle->setChecked (
        d->m_configThumbnailShowRectangle);
}

// private
void kpMainWindow::enableThumbnailOptionActions (bool enable)
{
    enableViewZoomedThumbnail (enable);
    enableViewShowThumbnailRectangle (enable);
}


// private
void kpMainWindow::createThumbnailView ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\t\tcreating new kpView:" << endl;
#endif

    if (m_thumbnailView)
    {
        kdDebug () << "kpMainWindow::createThumbnailView() had to destroy view" << endl;
        destroyThumbnailView ();
    }

    if (m_actionZoomedThumbnail->isChecked ())
    {
        m_thumbnailView = new kpZoomedThumbnailView (
            m_document, m_toolToolBar, m_viewManager,
            m_mainView,
            0/*scrollableContainer*/,
            m_thumbnail, "thumbnailView");
    }
    else
    {
        m_thumbnailView = new kpUnzoomedThumbnailView (
            m_document, m_toolToolBar, m_viewManager,
            m_mainView,
            0/*scrollableContainer*/,
            m_thumbnail, "thumbnailView");

    }

    m_thumbnailView->showBuddyViewScrollableContainerRectangle (
        d->m_actionShowThumbnailRectangle->isChecked ());


#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\t\tgive kpThumbnail the kpView:" << endl;
#endif
    if (m_thumbnail)
        m_thumbnail->setView (m_thumbnailView);
    else
        kdError () << "kpMainWindow::createThumbnailView() no thumbnail" << endl;

#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\t\tregistering the kpView:" << endl;
#endif
    if (m_viewManager)
        m_viewManager->registerView (m_thumbnailView);
}

// private
void kpMainWindow::destroyThumbnailView ()
{
    if (!m_thumbnailView)
        return;

    if (m_viewManager)
        m_viewManager->unregisterView (m_thumbnailView);

    if (m_thumbnail)
        m_thumbnail->setView (0);

    m_thumbnailView->deleteLater (); m_thumbnailView = 0;
}


// private
void kpMainWindow::updateThumbnail ()
{
#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "kpMainWindow::updateThumbnail()" << endl;
#endif
    bool enable = m_actionShowThumbnail->isChecked ();

#if DEBUG_KP_MAIN_WINDOW
    kdDebug () << "\tthumbnail="
               << bool (m_thumbnail)
               << " action_isChecked="
               << enable
               << endl;
#endif

    if (bool (m_thumbnail) == enable)
        return;

    if (!m_thumbnail)
    {
    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\tcreating thumbnail" << endl;
    #endif

        // Read last saved geometry before creating thumbnail & friends
        // in case they call notifyThumbnailGeometryChanged()
        TQRect thumbnailGeometry = m_configThumbnailGeometry;
    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\t\tlast used geometry=" << thumbnailGeometry << endl;
    #endif

        m_thumbnail = new kpThumbnail (this, "thumbnail");

        createThumbnailView ();

    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\t\tmoving thumbnail to right place" << endl;
    #endif
        if (!thumbnailGeometry.isEmpty () &&
            TQRect (0, 0, width (), height ()).intersects (thumbnailGeometry))
        {
            const TQRect geometry = mapToGlobal (thumbnailGeometry);
            m_thumbnail->resize (geometry.size ());
            m_thumbnail->move (geometry.topLeft ());
        }
        else
        {
            if (m_scrollView)
            {
                const int margin = 20;
                const int initialWidth = 160, initialHeight = 120;

                TQRect geometryRect (width () - initialWidth - margin * 2,
                                    m_scrollView->y () + margin,
                                    initialWidth,
                                    initialHeight);

            #if DEBUG_KP_MAIN_WINDOW
                kdDebug () << "\t\tcreating geometry=" << geometryRect << endl;
            #endif

                geometryRect = mapToGlobal (geometryRect);
            #if DEBUG_KP_MAIN_WINDOW
                kdDebug () << "\t\tmap to global=" << geometryRect << endl;
            #endif
                m_thumbnail->resize (geometryRect.size ());
                m_thumbnail->move (geometryRect.topLeft ());
            }
        }

    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\t\tshowing thumbnail" << endl;
    #endif
        m_thumbnail->show ();

    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\t\tconnecting thumbnail::visibilityChange to destroy slot" << endl;
    #endif
        connect (m_thumbnail, TQT_SIGNAL (visibilityChanged (bool)),
                 TQT_TQOBJECT(this), TQT_SLOT (slotDestroyThumbnailIfNotVisible (bool)));
    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\t\tDONE" << endl;
    #endif
    }
    else
    {
    #if DEBUG_KP_MAIN_WINDOW
        kdDebug () << "\tdestroying thumbnail" << endl;
    #endif

        if (m_thumbnailSaveConfigTimer && m_thumbnailSaveConfigTimer->isActive ())
        {
            m_thumbnailSaveConfigTimer->stop ();
            slotSaveThumbnailGeometry ();
        }


        destroyThumbnailView ();


        disconnect (m_thumbnail, TQT_SIGNAL (visibilityChanged (bool)),
                    TQT_TQOBJECT(this), TQT_SLOT (slotDestroyThumbnailIfNotVisible (bool)));

        m_thumbnail->deleteLater (); m_thumbnail = 0;
    }
}