summaryrefslogtreecommitdiffstats
path: root/kwin/lib/kcommondecoration.cpp
blob: 58a95b599c3c546962d77b8ed14346f8a460fc89 (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
/*
  This file is part of the KDE project.

  Copyright (C) 2005 Sandro Giessl <sandro@giessl.com>

  Permission is hereby granted, free of charge, to any person obtaining a
  copy of this software and associated documentation files (the "Software"),
  to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense,
  and/or sell copies of the Software, and to permit persons to whom the
  Software is furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  DEALINGS IN THE SOFTWARE.
 */

#include <qapplication.h>
#include <qcursor.h>
#include <qdatetime.h>
#include <qlabel.h>
#include <qtooltip.h>
#include <qwidget.h>

#include <kdebug.h>

#include <kapplication.h>
#include <kdecorationfactory.h>
#include <klocale.h>

#include "kcommondecoration.h"
#include "kcommondecoration.moc"

KCommonDecoration::KCommonDecoration(KDecorationBridge* bridge, KDecorationFactory* factory)
    : KDecoration (bridge, factory),
        m_previewWidget(0),
        btnHideMinWidth(200),
        btnHideLastWidth(0),
        closing(false)
{
    // sizeof(...) is calculated at compile time
    memset(m_button, 0, sizeof(KCommonDecorationButton *) * NumButtons);
}

KCommonDecoration::~KCommonDecoration()
{
    for (int n=0; n<NumButtons; n++) {
        if (m_button[n]) delete m_button[n];
    }
    delete m_previewWidget;
}

bool KCommonDecoration::decorationBehaviour(DecorationBehaviour behaviour) const
{
    switch (behaviour) {
        case DB_MenuClose:
            return false;

        case DB_WindowMask:
            return false;

        case DB_ButtonHide:
            return true;
    }

    return false;
}

int KCommonDecoration::layoutMetric(LayoutMetric lm, bool, const KCommonDecorationButton *) const
{
    switch (lm) {
        case LM_BorderLeft:
        case LM_BorderRight:
        case LM_BorderBottom:
        case LM_TitleEdgeTop:
        case LM_TitleEdgeBottom:
        case LM_TitleEdgeLeft:
        case LM_TitleEdgeRight:
        case LM_TitleBorderLeft:
        case LM_TitleBorderRight:
            return 5;


        case LM_ButtonWidth:
        case LM_ButtonHeight:
        case LM_TitleHeight:
            return 20;

        case LM_ButtonSpacing:
            return 5;

        case LM_ButtonMarginTop:
            return 0;

        case LM_ExplicitButtonSpacer:
            return 5;

        default:
            return 0;
    }
}

void KCommonDecoration::init()
{
    createMainWidget(WNoAutoErase);

    // for flicker-free redraws
    widget()->setBackgroundMode(NoBackground);

    widget()->installEventFilter( this );

    resetLayout();

    connect(this, SIGNAL(keepAboveChanged(bool) ), SLOT(keepAboveChange(bool) ) );
    connect(this, SIGNAL(keepBelowChanged(bool) ), SLOT(keepBelowChange(bool) ) );

    updateCaption();
}

void KCommonDecoration::reset( unsigned long changed )
{
    if (changed & SettingButtons) {
        resetLayout();
        widget()->update();
    }
}

QRegion KCommonDecoration::cornerShape(WindowCorner)
{
    return QRegion();
}

void KCommonDecoration::updateCaption()
{
    // This should be reimplemented in decorations for better efficiency
    widget()->update();
}

void KCommonDecoration::borders( int& left, int& right, int& top, int& bottom ) const
{
    left = layoutMetric(LM_BorderLeft);
    right = layoutMetric(LM_BorderRight);
    bottom = layoutMetric(LM_BorderBottom);
    top = layoutMetric(LM_TitleHeight) +
            layoutMetric(LM_TitleEdgeTop) +
            layoutMetric(LM_TitleEdgeBottom);

    updateLayout(); // TODO!! don't call everytime we are in ::borders
}

void KCommonDecoration::updateLayout() const
{
    QRect r = widget()->rect();
    int r_x, r_y, r_x2, r_y2;
    r.coords(&r_x, &r_y, &r_x2, &r_y2);

    // layout preview widget
    if (m_previewWidget) {
        const int borderLeft = layoutMetric(LM_BorderLeft);
        const int borderRight = layoutMetric(LM_BorderRight);
        const int borderBottom = layoutMetric(LM_BorderBottom);
        const int titleHeight = layoutMetric(LM_TitleHeight);
        const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
        const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);

        int left = r_x+borderLeft;
        int top = r_y+titleEdgeTop+titleHeight+titleEdgeBottom;
        int width = r_x2-borderRight-left+1;
        int height = r_y2-borderBottom-top+1;
        m_previewWidget->setGeometry(left, top, width, height);
        moveWidget(left,top, m_previewWidget);
        resizeWidget(width, height, m_previewWidget);
    }

    // resize buttons...
    for (int n=0; n<NumButtons; n++) {
        if (m_button[n]) {
            QSize newSize = QSize(layoutMetric(LM_ButtonWidth, true, m_button[n]),
                                  layoutMetric(LM_ButtonHeight, true, m_button[n]) );
            if (newSize != m_button[n]->size() )
                m_button[n]->setSize(newSize);
        }
    }

    // layout buttons
    int y = r_y + layoutMetric(LM_TitleEdgeTop) + layoutMetric(LM_ButtonMarginTop);
    if (m_buttonsLeft.count() > 0) {
        const int buttonSpacing = layoutMetric(LM_ButtonSpacing);
        int x = r_x + layoutMetric(LM_TitleEdgeLeft);
        for (ButtonContainer::const_iterator it = m_buttonsLeft.begin(); it != m_buttonsLeft.end(); ++it) {
            bool elementLayouted = false;
            if (*it) {
                if (!(*it)->isHidden() ) {
                    moveWidget(x,y, *it);
                    x += layoutMetric(LM_ButtonWidth, true, ::qt_cast<KCommonDecorationButton*>(*it) );
                    elementLayouted = true;
                }
            } else {
                x+= layoutMetric(LM_ExplicitButtonSpacer);
                elementLayouted = true;
            }
            if (elementLayouted && it != m_buttonsLeft.end() )
                x += buttonSpacing;
        }
    }

    if (m_buttonsRight.count() > 0) {
        const int titleEdgeRightLeft = r_x2-layoutMetric(LM_TitleEdgeRight)+1;

        const int buttonSpacing = layoutMetric(LM_ButtonSpacing);
        int x = titleEdgeRightLeft - buttonContainerWidth(m_buttonsRight);
        for (ButtonContainer::const_iterator it = m_buttonsRight.begin(); it != m_buttonsRight.end(); ++it) {
            bool elementLayouted = false;
            if (*it) {
                if (!(*it)->isHidden() ) {
                    moveWidget(x,y, *it);
                    x += layoutMetric(LM_ButtonWidth, true, ::qt_cast<KCommonDecorationButton*>(*it) );;
                    elementLayouted = true;
                }
            } else {
                x += layoutMetric(LM_ExplicitButtonSpacer);
                elementLayouted = true;
            }
            if (elementLayouted && it != m_buttonsRight.end() )
                x += buttonSpacing;
        }
    }
}

void KCommonDecoration::updateButtons() const
{
    for (int n=0; n<NumButtons; n++)
        if (m_button[n]) m_button[n]->update();
}

void KCommonDecoration::resetButtons() const
{
    for (int n=0; n<NumButtons; n++)
        if (m_button[n]) m_button[n]->reset(KCommonDecorationButton::ManualReset);
}

void KCommonDecoration::resetLayout()
{
    for (int n=0; n<NumButtons; n++) {
        if (m_button[n]) {
            delete m_button[n];
            m_button[n] = 0;
        }
    }
    m_buttonsLeft.clear();
    m_buttonsRight.clear();

    delete m_previewWidget;
    m_previewWidget = 0;

    // shown instead of the window contents in decoration previews
    if(isPreview() ) {
        m_previewWidget = new QLabel(i18n("%1 is the name of window decoration style", "<center><b>%1 preview</b></center>").arg(visibleName() ), widget());
        m_previewWidget->show();
    }

    addButtons(m_buttonsLeft,
               options()->customButtonPositions() ? options()->titleButtonsLeft() : defaultButtonsLeft(),
               true);
    addButtons(m_buttonsRight,
               options()->customButtonPositions() ? options()->titleButtonsRight() : defaultButtonsRight(),
               false);

    updateLayout();

    const int minTitleBarWidth = 35;
    btnHideMinWidth = buttonContainerWidth(m_buttonsLeft,true) + buttonContainerWidth(m_buttonsRight,true) +
            layoutMetric(LM_TitleEdgeLeft,false) + layoutMetric(LM_TitleEdgeRight,false) +
            layoutMetric(LM_TitleBorderLeft,false) + layoutMetric(LM_TitleBorderRight,false) +
            minTitleBarWidth;
    btnHideLastWidth = 0;
}

int KCommonDecoration::buttonsLeftWidth() const
{
    return buttonContainerWidth(m_buttonsLeft);
}

int KCommonDecoration::buttonsRightWidth() const
{
    return buttonContainerWidth(m_buttonsRight);
}

int KCommonDecoration::buttonContainerWidth(const ButtonContainer &btnContainer, bool countHidden) const
{
    int explicitSpacer = layoutMetric(LM_ExplicitButtonSpacer);

    int shownElementsCount = 0;

    int w = 0;
    for (ButtonContainer::const_iterator it = btnContainer.begin(); it != btnContainer.end(); ++it) {
        if (*it) {
            if (countHidden || !(*it)->isHidden() ) {
                w += (*it)->width();
                ++shownElementsCount;
            }
        } else {
            w += explicitSpacer;
            ++shownElementsCount;
        }
    }
    w += layoutMetric(LM_ButtonSpacing)*(shownElementsCount-1);

    return w;
}

void KCommonDecoration::addButtons(ButtonContainer &btnContainer, const QString& s, bool isLeft)
{
    if (s.length() > 0) {
        for (unsigned n=0; n < s.length(); n++) {
            KCommonDecorationButton *btn = 0;
            switch (s[n]) {
              case 'M': // Menu button
                  if (!m_button[MenuButton]){
                      btn = createButton(MenuButton);
                      if (!btn) break;
                      btn->setTipText(i18n("Menu") );
                      btn->setRealizeButtons(LeftButton|RightButton);
                      connect(btn, SIGNAL(pressed()), SLOT(menuButtonPressed()));
                      connect(btn, SIGNAL(released()), this, SLOT(menuButtonReleased()));

                      m_button[MenuButton] = btn;
                  }
                  break;
              case 'S': // OnAllDesktops button
                  if (!m_button[OnAllDesktopsButton]){
                      btn = createButton(OnAllDesktopsButton);
                      if (!btn) break;
                      const bool oad = isOnAllDesktops();
                      btn->setTipText(oad?i18n("Not on all desktops"):i18n("On all desktops") );
                      btn->setToggleButton(true);
                      btn->setOn( oad );
                      connect(btn, SIGNAL(clicked()), SLOT(toggleOnAllDesktops()));

                      m_button[OnAllDesktopsButton] = btn;
                  }
                  break;
              case 'H': // Help button
                  if ((!m_button[HelpButton]) && providesContextHelp()){
                      btn = createButton(HelpButton);
                      if (!btn) break;
                      btn->setTipText(i18n("Help") );
                      connect(btn, SIGNAL(clicked()), SLOT(showContextHelp()));

                      m_button[HelpButton] = btn;
                  }
                  break;
              case 'I': // Minimize button
                  if ((!m_button[MinButton]) && isMinimizable()){
                      btn = createButton(MinButton);
                      if (!btn) break;
                      btn->setTipText(i18n("Minimize") );
                      connect(btn, SIGNAL(clicked()), SLOT(minimize()));

                      m_button[MinButton] = btn;
                  }
                  break;
              case 'A': // Maximize button
                  if ((!m_button[MaxButton]) && isMaximizable()){
                      btn = createButton(MaxButton);
                      if (!btn) break;
                      btn->setRealizeButtons(LeftButton|MidButton|RightButton);
                      const bool max = maximizeMode()==MaximizeFull;
                      btn->setTipText(max?i18n("Restore"):i18n("Maximize") );
                      btn->setToggleButton(true);
                      btn->setOn( max );
                      connect(btn, SIGNAL(clicked()), SLOT(slotMaximize()));

                      m_button[MaxButton] = btn;
                  }
                  break;
              case 'X': // Close button
                  if ((!m_button[CloseButton]) && isCloseable()){
                      btn = createButton(CloseButton);
                      if (!btn) break;
                      btn->setTipText(i18n("Close") );
                      connect(btn, SIGNAL(clicked()), SLOT(closeWindow()));

                      m_button[CloseButton] = btn;
                  }
                  break;
              case 'F': // AboveButton button
                  if (!m_button[AboveButton]){
                      btn = createButton(AboveButton);
                      if (!btn) break;
                      bool above = keepAbove();
                      btn->setTipText(above?i18n("Do not keep above others"):i18n("Keep above others") );
                      btn->setToggleButton(true);
                      btn->setOn( above );
                      connect(btn, SIGNAL(clicked()), SLOT(slotKeepAbove()));

                      m_button[AboveButton] = btn;
                  }
                  break;
              case 'B': // BelowButton button
                  if (!m_button[BelowButton]){
                      btn = createButton(BelowButton);
                      if (!btn) break;
                      bool below = keepBelow();
                      btn->setTipText(below?i18n("Do not keep below others"):i18n("Keep below others") );
                      btn->setToggleButton(true);
                      btn->setOn( below );
                      connect(btn, SIGNAL(clicked()), SLOT(slotKeepBelow()));

                      m_button[BelowButton] = btn;
                  }
                  break;
              case 'L': // Shade button
                  if ((!m_button[ShadeButton]) && isShadeable()){
                      btn = createButton(ShadeButton);
                      if (!btn) break;
                      bool shaded = isSetShade();
                      btn->setTipText(shaded?i18n("Unshade"):i18n("Shade") );
                      btn->setToggleButton(true);
                      btn->setOn( shaded );
                      connect(btn, SIGNAL(clicked()), SLOT(slotShade()));

                      m_button[ShadeButton] = btn;
                  }
                  break;
              case '_': // Spacer item
                  btnContainer.append(0);
            }


            if (btn) {
                btn->setLeft(isLeft);
                btn->setSize(QSize(layoutMetric(LM_ButtonWidth, true, btn),layoutMetric(LM_ButtonHeight, true, btn)) );
                btn->show();
                btnContainer.append(btn);
            }

        }
    }
}

void KCommonDecoration::calcHiddenButtons()
{
    if (width() == btnHideLastWidth)
        return;

    btnHideLastWidth = width();

    //Hide buttons in the following order:
    KCommonDecorationButton* btnArray[] = { m_button[HelpButton], m_button[ShadeButton], m_button[BelowButton],
        m_button[AboveButton], m_button[OnAllDesktopsButton], m_button[MaxButton],
        m_button[MinButton], m_button[MenuButton], m_button[CloseButton] };
    const int buttonsCount = sizeof( btnArray ) / sizeof( btnArray[ 0 ] );

    int current_width = width();
    int count = 0;

    // Hide buttons
    while (current_width < btnHideMinWidth && count < buttonsCount)
    {
        if (btnArray[count] ) {
            current_width += btnArray[count]->width();
            if (btnArray[count]->isVisible() )
                btnArray[count]->hide();
        }
        count++;
    }
    // Show the rest of the buttons...
    for(int i = count; i < buttonsCount; i++)
    {
        if (btnArray[i] ) {

            if (! btnArray[i]->isHidden() )
                break; // all buttons shown...

            btnArray[i]->show();
        }
    }
}

void KCommonDecoration::show()
{
    if (decorationBehaviour(DB_ButtonHide) )
        calcHiddenButtons();
    widget()->show();
}

void KCommonDecoration::resize( const QSize& s )
{
    widget()->resize( s );
}

QSize KCommonDecoration::minimumSize() const
{
    const int minWidth = QMAX(layoutMetric(LM_TitleEdgeLeft), layoutMetric(LM_BorderLeft))
            +QMAX(layoutMetric(LM_TitleEdgeRight), layoutMetric(LM_BorderRight))
            +layoutMetric(LM_TitleBorderLeft)+layoutMetric(LM_TitleBorderRight);
    return QSize(minWidth,
                 layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)
                         +layoutMetric(LM_TitleEdgeBottom)
                         +layoutMetric(LM_BorderBottom) );
}

void KCommonDecoration::maximizeChange()
{
    if( m_button[MaxButton] ) {
        m_button[MaxButton]->setOn( maximizeMode()==MaximizeFull);
        m_button[MaxButton]->setTipText( (maximizeMode()!=MaximizeFull) ?
                i18n("Maximize")
            : i18n("Restore"));
        m_button[MaxButton]->reset(KCommonDecorationButton::StateChange);
    }
    updateWindowShape();
    widget()->update();
}

void KCommonDecoration::desktopChange()
{
    if ( m_button[OnAllDesktopsButton] ) {
        m_button[OnAllDesktopsButton]->setOn( isOnAllDesktops() );
        m_button[OnAllDesktopsButton]->setTipText( isOnAllDesktops() ?
                i18n("Not on all desktops")
            : i18n("On all desktops"));
        m_button[OnAllDesktopsButton]->reset(KCommonDecorationButton::StateChange);
    }
}

void KCommonDecoration::shadeChange()
{
    if ( m_button[ShadeButton] ) {
        bool shaded = isSetShade();
        m_button[ShadeButton]->setOn( shaded );
        m_button[ShadeButton]->setTipText( shaded ?
                i18n("Unshade")
            : i18n("Shade"));
        m_button[ShadeButton]->reset(KCommonDecorationButton::StateChange);
    }
}

void KCommonDecoration::iconChange()
{
    if (m_button[MenuButton])
    {
        m_button[MenuButton]->update();
        m_button[MenuButton]->reset(KCommonDecorationButton::IconChange);
    }
}

void KCommonDecoration::activeChange()
{
    updateButtons();
    widget()->update(); // do something similar to updateCaption here
}

void KCommonDecoration::captionChange()
{
    updateCaption();
}

void KCommonDecoration::keepAboveChange(bool above)
{
    if (m_button[AboveButton])
    {
        m_button[AboveButton]->setOn(above);
        m_button[AboveButton]->setTipText( above?i18n("Do not keep above others"):i18n("Keep above others") );
        m_button[AboveButton]->reset(KCommonDecorationButton::StateChange);
    }

    if (m_button[BelowButton] && m_button[BelowButton]->isOn())
    {
        m_button[BelowButton]->setOn(false);
        m_button[BelowButton]->setTipText( i18n("Keep below others") );
        m_button[BelowButton]->reset(KCommonDecorationButton::StateChange);
    }
}

void KCommonDecoration::keepBelowChange(bool below)
{
    if (m_button[BelowButton])
    {
        m_button[BelowButton]->setOn(below);
        m_button[BelowButton]->setTipText( below?i18n("Do not keep below others"):i18n("Keep below others") );
        m_button[BelowButton]->reset(KCommonDecorationButton::StateChange);
    }

    if (m_button[AboveButton] && m_button[AboveButton]->isOn())
    {
        m_button[AboveButton]->setOn(false);
        m_button[AboveButton]->setTipText( i18n("Keep above others") );
        m_button[AboveButton]->reset(KCommonDecorationButton::StateChange);
    }
}

void KCommonDecoration::slotMaximize()
{
    if (m_button[MaxButton])
    {
        maximize(m_button[MaxButton]->lastMousePress() );
    }
}

void KCommonDecoration::slotShade()
{
    setShade( !isSetShade() );
}

void KCommonDecoration::slotKeepAbove()
{
    setKeepAbove(!keepAbove() );
}

void KCommonDecoration::slotKeepBelow()
{
    setKeepBelow(!keepBelow() );
}

void KCommonDecoration::menuButtonPressed()
{
    static QTime* t = NULL;
    static KCommonDecoration* lastClient = NULL;
    if (t == NULL)
        t = new QTime;
    bool dbl = (lastClient==this && t->elapsed() <= QApplication::doubleClickInterval());
    lastClient = this;
    t->start();
    if (!dbl || !decorationBehaviour(DB_MenuClose) ) {
        QRect menuRect = m_button[MenuButton]->rect();
        QPoint menutop = m_button[MenuButton]->mapToGlobal(menuRect.topLeft());
        QPoint menubottom = m_button[MenuButton]->mapToGlobal(menuRect.bottomRight())+QPoint(0,2);
        KDecorationFactory* f = factory();
        showWindowMenu(QRect(menutop, menubottom));
        if( !f->exists( this )) // 'this' was deleted
            return;
        m_button[MenuButton]->setDown(false);
    }
    else
        closing = true;
}

void KCommonDecoration::menuButtonReleased()
{
    if(closing)
        closeWindow();
}

void KCommonDecoration::resizeEvent(QResizeEvent */*e*/)
{
    if (decorationBehaviour(DB_ButtonHide) )
        calcHiddenButtons();

    updateLayout();

    updateWindowShape();
    // FIXME: don't update() here! this would result in two paintEvent()s
    // because there is already "something" else triggering the repaint...
//     widget()->update();
}

void KCommonDecoration::moveWidget(int x, int y, QWidget *widget) const
{
    QPoint p = widget->pos();
    int oldX = p.y();
    int oldY = p.x();

    if (x!=oldX || y!=oldY)
        widget->move(x,y);
}

void KCommonDecoration::resizeWidget(int w, int h, QWidget *widget) const
{
    QSize s = widget->size();
    int oldW = s.width();
    int oldH = s.height();

    if (w!=oldW || h!=oldH)
        widget->resize(w,h);
}

void KCommonDecoration::mouseDoubleClickEvent(QMouseEvent *e)
{
    if( e->button() != LeftButton )
        return;

    int tb = layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)+layoutMetric(LM_TitleEdgeBottom);
    // when shaded, react on double clicks everywhere to make it easier to unshade. otherwise
    // react only on double clicks in the title bar region...
    if (isSetShade() || e->pos().y() <= tb )
        titlebarDblClickOperation();
}

void KCommonDecoration::wheelEvent(QWheelEvent *e)
{
    int tb = layoutMetric(LM_TitleEdgeTop)+layoutMetric(LM_TitleHeight)+layoutMetric(LM_TitleEdgeBottom);
    if (isSetShade() || e->pos().y() <= tb )
        titlebarMouseWheelOperation( e->delta());
}

KCommonDecoration::Position KCommonDecoration::mousePosition(const QPoint &point) const
{
    const int corner = 18+3*layoutMetric(LM_BorderBottom, false)/2;
    Position pos = PositionCenter;

    QRect r = widget()->rect();
    int r_x, r_y, r_x2, r_y2;
    r.coords(&r_x, &r_y, &r_x2, &r_y2);
    int p_x = point.x();
    int p_y = point.y();
    const int borderLeft = layoutMetric(LM_BorderLeft);
//     const int borderRight = layoutMetric(LM_BorderRight);
    const int borderBottom = layoutMetric(LM_BorderBottom);
    const int titleHeight = layoutMetric(LM_TitleHeight);
    const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
    const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);
    const int titleEdgeLeft = layoutMetric(LM_TitleEdgeLeft);
    const int titleEdgeRight = layoutMetric(LM_TitleEdgeRight);

    const int borderBottomTop = r_y2-borderBottom+1;
    const int borderLeftRight = r_x+borderLeft-1;
//     const int borderRightLeft = r_x2-borderRight+1;
    const int titleEdgeLeftRight = r_x+titleEdgeLeft-1;
    const int titleEdgeRightLeft = r_x2-titleEdgeRight+1;
    const int titleEdgeBottomBottom = r_y+titleEdgeTop+titleHeight+titleEdgeBottom-1;
    const int titleEdgeTopBottom = r_y+titleEdgeTop-1;

    if (p_y <= titleEdgeTopBottom) {
        if (p_x <= r_x+corner)
            pos = PositionTopLeft;
        else if (p_x >= r_x2-corner)
            pos = PositionTopRight;
        else
            pos = PositionTop;
    } else if (p_y <= titleEdgeBottomBottom) {
        if (p_x <= titleEdgeLeftRight)
            pos = PositionTopLeft;
        else if (p_x >= titleEdgeRightLeft)
            pos = PositionTopRight;
        else
            pos = PositionCenter; // title bar
    } else if (p_y < borderBottomTop) {
        if      (p_y < r_y2-corner) {
            if (p_x <= borderLeftRight)
                pos = PositionLeft;
            else
                pos = PositionRight;
        } else {
            if (p_x <= borderLeftRight)
                pos = PositionBottomLeft;
            else
                pos = PositionBottomRight;
        }
    } else if(p_y >= borderBottomTop) {
        if (p_x <= r_x+corner)
            pos = PositionBottomLeft;
        else if (p_x >= r_x2-corner)
            pos = PositionBottomRight;
        else
            pos = PositionBottom;
    }

    return pos;
}

void KCommonDecoration::updateWindowShape()
{
    // don't mask the widget...
    if (!decorationBehaviour(DB_WindowMask) )
        return;

    int w = widget()->width();
    int h = widget()->height();

    bool tl=true,tr=true,bl=true,br=true; // is there a transparent rounded corner in top-left? etc

    QDesktopWidget *desktop=KApplication::desktop();
    // no transparent rounded corners if this window corner lines up with a screen corner
    for(int screen=0; screen < desktop->numScreens(); ++screen)
    {
        QRect fullscreen(desktop->screenGeometry(screen));
        QRect window = geometry();

        if(window.topLeft()    == fullscreen.topLeft() ) tl = false;
        if(window.topRight()   == fullscreen.topRight() ) tr = false;
        if(window.bottomLeft() == fullscreen.bottomLeft() ) bl = false;
        if(window.bottomRight()== fullscreen.bottomRight() ) br = false;
    }

    QRegion mask(0, 0, w, h);

    // Remove top-left corner.
    if(tl)
    {
        mask -= cornerShape(WC_TopLeft);
    }
    // Remove top-right corner.
    if(tr)
    {
        mask -= cornerShape(WC_TopRight);
    }
        // Remove top-left corner.
    if(bl)
    {
        mask -= cornerShape(WC_BottomLeft);
    }
    // Remove top-right corner.
    if(br)
    {
        mask -= cornerShape(WC_BottomRight);
    }

    setMask( mask );
}

bool KCommonDecoration::eventFilter( QObject* o, QEvent* e )
{
    if( o != widget())
        return false;
    switch( e->type())
    {
        case QEvent::Resize:
            resizeEvent(static_cast<QResizeEvent*>(e) );
            return true;
        case QEvent::Paint:
            paintEvent( static_cast< QPaintEvent* >( e ));
            return true;
        case QEvent::MouseButtonDblClick:
            mouseDoubleClickEvent( static_cast< QMouseEvent* >( e ));
            return true;
        case QEvent::MouseButtonPress:
            processMousePressEvent( static_cast< QMouseEvent* >( e ));
            return true;
        case QEvent::Wheel:
            wheelEvent( static_cast< QWheelEvent* >( e ));
            return true;
        default:
            return false;
    }
}

const int SUPPORTED_WINDOW_TYPES_MASK = NET::NormalMask | NET::DesktopMask | NET::DockMask
        | NET::ToolbarMask | NET::MenuMask | NET::DialogMask /*| NET::OverrideMask*/ | NET::TopMenuMask
        | NET::UtilityMask | NET::SplashMask;

bool KCommonDecoration::isToolWindow() const
{
    NET::WindowType type = windowType( SUPPORTED_WINDOW_TYPES_MASK );
    return ((type==NET::Toolbar)||(type==NET::Utility)||(type==NET::Menu));
}

QRect KCommonDecoration::titleRect() const
{
    int r_x, r_y, r_x2, r_y2;
    widget()->rect().coords(&r_x, &r_y, &r_x2, &r_y2);
    const int titleEdgeLeft = layoutMetric(LM_TitleEdgeLeft);
    const int titleEdgeTop = layoutMetric(LM_TitleEdgeTop);
    const int titleEdgeRight = layoutMetric(LM_TitleEdgeRight);
    const int titleEdgeBottom = layoutMetric(LM_TitleEdgeBottom);
    const int titleBorderLeft = layoutMetric(LM_TitleBorderLeft);
    const int titleBorderRight = layoutMetric(LM_TitleBorderRight);
    const int ttlHeight = layoutMetric(LM_TitleHeight);
    const int titleEdgeBottomBottom = r_y+titleEdgeTop+ttlHeight+titleEdgeBottom-1;
    return QRect(r_x+titleEdgeLeft+buttonsLeftWidth()+titleBorderLeft, r_y+titleEdgeTop,
              r_x2-titleEdgeRight-buttonsRightWidth()-titleBorderRight-(r_x+titleEdgeLeft+buttonsLeftWidth()+titleBorderLeft),
              titleEdgeBottomBottom-(r_y+titleEdgeTop) );
}


KCommonDecorationButton::KCommonDecorationButton(ButtonType type, KCommonDecoration *parent, const char *name)
    : QButton(parent->widget(), name),
        m_decoration(parent),
        m_type(type),
        m_realizeButtons(LeftButton),
        m_lastMouse(NoButton),
        m_isLeft(true)
{
    setCursor(ArrowCursor);
}

KCommonDecorationButton::~KCommonDecorationButton()
{
}

KCommonDecoration *KCommonDecorationButton::decoration() const
{
    return m_decoration;
}

ButtonType KCommonDecorationButton::type() const
{
    return m_type;
}

bool KCommonDecorationButton::isLeft() const
{
    return m_isLeft;
}

void KCommonDecorationButton::setLeft(bool left)
{
    m_isLeft = left;
}

void KCommonDecorationButton::setRealizeButtons(int btns)
{
    m_realizeButtons = btns;
}

void KCommonDecorationButton::setSize(const QSize &s)
{
    if (!m_size.isValid() || s != size() ) {
        m_size = s;

        setFixedSize(m_size);
        reset(SizeChange);
    }
}

QSize KCommonDecorationButton::sizeHint() const
{
    return m_size;
}

void KCommonDecorationButton::setTipText(const QString &tip) {
    QToolTip::remove(this );
    QToolTip::add(this, tip );
}

void KCommonDecorationButton::setToggleButton(bool toggle)
{
    QButton::setToggleButton(toggle);
    reset(ToggleChange);
}

void KCommonDecorationButton::setOn(bool on)
{
    if (on != isOn() ) {
        QButton::setOn(on);
        reset(StateChange);
    }
}

void KCommonDecorationButton::mousePressEvent(QMouseEvent* e)
{
    m_lastMouse = e->button();
    // pass on event after changing button to LeftButton
    QMouseEvent me(e->type(), e->pos(), e->globalPos(),
                   (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state());

    QButton::mousePressEvent(&me);
}

void KCommonDecorationButton::mouseReleaseEvent(QMouseEvent* e)
{
    m_lastMouse = e->button();
    // pass on event after changing button to LeftButton
    QMouseEvent me(e->type(), e->pos(), e->globalPos(),
                   (e->button()&m_realizeButtons)?LeftButton:NoButton, e->state());

    QButton::mouseReleaseEvent(&me);
}