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source: trunk/src/gui/widgets/qdockarealayout.cpp@ 602

Last change on this file since 602 was 561, checked in by Dmitry A. Kuminov, 16 years ago
trunk: Merged in qt 4.6.1 sources.
File size: 101.4 KB

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1	/****************************************************************************
2	**
3	** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4	** All rights reserved.
5	** Contact: Nokia Corporation (qt-info@nokia.com)
6	**
7	** This file is part of the QtGui module of the Qt Toolkit.
8	**
9	** $QT_BEGIN_LICENSE:LGPL$
10	** Commercial Usage
11	** Licensees holding valid Qt Commercial licenses may use this file in
12	** accordance with the Qt Commercial License Agreement provided with the
13	** Software or, alternatively, in accordance with the terms contained in
14	** a written agreement between you and Nokia.
15	**
16	** GNU Lesser General Public License Usage
17	** Alternatively, this file may be used under the terms of the GNU Lesser
18	** General Public License version 2.1 as published by the Free Software
19	** Foundation and appearing in the file LICENSE.LGPL included in the
20	** packaging of this file. Please review the following information to
21	** ensure the GNU Lesser General Public License version 2.1 requirements
22	** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23	**
24	** In addition, as a special exception, Nokia gives you certain additional
25	** rights. These rights are described in the Nokia Qt LGPL Exception
26	** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27	**
28	** GNU General Public License Usage
29	** Alternatively, this file may be used under the terms of the GNU
30	** General Public License version 3.0 as published by the Free Software
31	** Foundation and appearing in the file LICENSE.GPL included in the
32	** packaging of this file. Please review the following information to
33	** ensure the GNU General Public License version 3.0 requirements will be
34	** met: http://www.gnu.org/copyleft/gpl.html.
35	**
36	** If you have questions regarding the use of this file, please contact
37	** Nokia at qt-info@nokia.com.
38	** $QT_END_LICENSE$
39	**
40	****************************************************************************/
41
42	#include "QtGui/qapplication.h"
43	#include "QtGui/qwidget.h"
44	#include "QtGui/qtabbar.h"
45	#include "QtGui/qstyle.h"
46	#include "QtGui/qdesktopwidget.h"
47	#include "QtCore/qvariant.h"
48	#include "qdockarealayout_p.h"
49	#include "qdockwidget.h"
50	#include "qmainwindow.h"
51	#include "qwidgetanimator_p.h"
52	#include "qmainwindowlayout_p.h"
53	#include "qdockwidget_p.h"
54	#include <private/qlayoutengine_p.h>
55
56	#include <qpainter.h>
57	#include <qstyleoption.h>
58
59	#ifndef QT_NO_DOCKWIDGET
60
61	QT_BEGIN_NAMESPACE
62
63	enum { StateFlagVisible = 1, StateFlagFloating = 2 };
64
65	/******************************************************************************
66	** QPlaceHolderItem
67	*/
68
69	QPlaceHolderItem::QPlaceHolderItem(QWidget *w)
70	{
71	objectName = w->objectName();
72	hidden = w->isHidden();
73	window = w->isWindow();
74	if (window)
75	topLevelRect = w->geometry();
76	}
77
78	/******************************************************************************
79	** QDockAreaLayoutItem
80	*/
81
82	QDockAreaLayoutItem::QDockAreaLayoutItem(QLayoutItem *_widgetItem)
83	: widgetItem(_widgetItem), subinfo(0), placeHolderItem(0), pos(0), size(-1), flags(NoFlags)
84	{
85	}
86
87	QDockAreaLayoutItem::QDockAreaLayoutItem(QDockAreaLayoutInfo *_subinfo)
88	: widgetItem(0), subinfo(_subinfo), placeHolderItem(0), pos(0), size(-1), flags(NoFlags)
89	{
90	}
91
92	QDockAreaLayoutItem::QDockAreaLayoutItem(QPlaceHolderItem *_placeHolderItem)
93	: widgetItem(0), subinfo(0), placeHolderItem(_placeHolderItem), pos(0), size(-1), flags(NoFlags)
94	{
95	}
96
97	QDockAreaLayoutItem::QDockAreaLayoutItem(const QDockAreaLayoutItem &other)
98	: widgetItem(other.widgetItem), subinfo(0), placeHolderItem(0), pos(other.pos),
99	size(other.size), flags(other.flags)
100	{
101	if (other.subinfo != 0)
102	subinfo = new QDockAreaLayoutInfo(*other.subinfo);
103	else if (other.placeHolderItem != 0)
104	placeHolderItem = new QPlaceHolderItem(*other.placeHolderItem);
105	}
106
107	QDockAreaLayoutItem::~QDockAreaLayoutItem()
108	{
109	delete subinfo;
110	delete placeHolderItem;
111	}
112
113	bool QDockAreaLayoutItem::skip() const
114	{
115	if (placeHolderItem != 0)
116	return true;
117
118	if (flags & GapItem)
119	return false;
120
121	if (widgetItem != 0)
122	return widgetItem->isEmpty();
123
124	if (subinfo != 0) {
125	for (int i = 0; i < subinfo->item_list.count(); ++i) {
126	if (!subinfo->item_list.at(i).skip())
127	return false;
128	}
129	}
130
131	return true;
132	}
133
134	QSize QDockAreaLayoutItem::minimumSize() const
135	{
136	if (widgetItem != 0) {
137	int left, top, right, bottom;
138	widgetItem->widget()->getContentsMargins(&left, &top, &right, &bottom);
139	return widgetItem->minimumSize() + QSize(left+right, top+bottom);
140	}
141	if (subinfo != 0)
142	return subinfo->minimumSize();
143	return QSize(0, 0);
144	}
145
146	QSize QDockAreaLayoutItem::maximumSize() const
147	{
148	if (widgetItem != 0) {
149	int left, top, right, bottom;
150	widgetItem->widget()->getContentsMargins(&left, &top, &right, &bottom);
151	return widgetItem->maximumSize()+ QSize(left+right, top+bottom);
152	}
153	if (subinfo != 0)
154	return subinfo->maximumSize();
155	return QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
156	}
157
158	bool QDockAreaLayoutItem::hasFixedSize(Qt::Orientation o) const
159	{
160	return perp(o, minimumSize()) == perp(o, maximumSize());
161	}
162
163	bool QDockAreaLayoutItem::expansive(Qt::Orientation o) const
164	{
165	if ((flags & GapItem) \|\| placeHolderItem != 0)
166	return false;
167	if (widgetItem != 0)
168	return ((widgetItem->expandingDirections() & o) == o);
169	if (subinfo != 0)
170	return subinfo->expansive(o);
171	return false;
172	}
173
174	QSize QDockAreaLayoutItem::sizeHint() const
175	{
176	if (placeHolderItem != 0)
177	return QSize(0, 0);
178	if (widgetItem != 0) {
179	int left, top, right, bottom;
180	widgetItem->widget()->getContentsMargins(&left, &top, &right, &bottom);
181	return widgetItem->sizeHint() + QSize(left+right, top+bottom);
182	}
183	if (subinfo != 0)
184	return subinfo->sizeHint();
185	return QSize(-1, -1);
186	}
187
188	QDockAreaLayoutItem
189	&QDockAreaLayoutItem::operator = (const QDockAreaLayoutItem &other)
190	{
191	widgetItem = other.widgetItem;
192	if (other.subinfo == 0)
193	subinfo = 0;
194	else
195	subinfo = new QDockAreaLayoutInfo(*other.subinfo);
196
197	delete placeHolderItem;
198	if (other.placeHolderItem == 0)
199	placeHolderItem = 0;
200	else
201	placeHolderItem = new QPlaceHolderItem(*other.placeHolderItem);
202
203	pos = other.pos;
204	size = other.size;
205	flags = other.flags;
206
207	return *this;
208	}
209
210	/******************************************************************************
211	** QDockAreaLayoutInfo
212	*/
213
214	#ifndef QT_NO_TABBAR
215	static quintptr tabId(const QDockAreaLayoutItem &item)
216	{
217	if (item.widgetItem == 0)
218	return 0;
219	return reinterpret_cast<quintptr>(item.widgetItem->widget());
220	}
221	#endif
222
223	QDockAreaLayoutInfo::QDockAreaLayoutInfo()
224	: sep(0), dockPos(QInternal::LeftDock), o(Qt::Horizontal), mainWindow(0)
225	#ifndef QT_NO_TABBAR
226	, tabbed(false), tabBar(0), tabBarShape(QTabBar::RoundedSouth), tabBarVisible(false)
227	#endif
228	{
229	}
230
231	QDockAreaLayoutInfo::QDockAreaLayoutInfo(int _sep, QInternal::DockPosition _dockPos,
232	Qt::Orientation _o, int tbshape,
233	QMainWindow *window)
234	: sep(_sep), dockPos(_dockPos), o(_o), mainWindow(window)
235	#ifndef QT_NO_TABBAR
236	, tabbed(false), tabBar(0), tabBarShape(static_cast<QTabBar::Shape>(tbshape)), tabBarVisible(false)
237	#endif
238	{
239	#ifdef QT_NO_TABBAR
240	Q_UNUSED(tbshape);
241	#endif
242	}
243
244	QSize QDockAreaLayoutInfo::size() const
245	{
246	return isEmpty() ? QSize(0, 0) : rect.size();
247	}
248
249	void QDockAreaLayoutInfo::clear()
250	{
251	item_list.clear();
252	rect = QRect();
253	#ifndef QT_NO_TABBAR
254	tabbed = false;
255	tabBar = 0;
256	#endif
257	}
258
259	bool QDockAreaLayoutInfo::isEmpty() const
260	{
261	return next(-1) == -1;
262	}
263
264	QSize QDockAreaLayoutInfo::minimumSize() const
265	{
266	if (isEmpty())
267	return QSize(0, 0);
268
269	int a = 0, b = 0;
270	bool first = true;
271	for (int i = 0; i < item_list.size(); ++i) {
272	const QDockAreaLayoutItem &item = item_list.at(i);
273	if (item.skip())
274	continue;
275
276	QSize min_size = item.minimumSize();
277	#ifndef QT_NO_TABBAR
278	if (tabbed) {
279	a = qMax(a, pick(o, min_size));
280	} else
281	#endif
282	{
283	if (!first)
284	a += sep;
285	a += pick(o, min_size);
286	}
287	b = qMax(b, perp(o, min_size));
288
289	first = false;
290	}
291
292	QSize result;
293	rpick(o, result) = a;
294	rperp(o, result) = b;
295
296	#ifndef QT_NO_TABBAR
297	if (tabbed) {
298	QSize tbm = tabBarMinimumSize();
299	switch (tabBarShape) {
300	case QTabBar::RoundedNorth:
301	case QTabBar::RoundedSouth:
302	case QTabBar::TriangularNorth:
303	case QTabBar::TriangularSouth:
304	result.rheight() += tbm.height();
305	result.rwidth() = qMax(tbm.width(), result.width());
306	break;
307	case QTabBar::RoundedEast:
308	case QTabBar::RoundedWest:
309	case QTabBar::TriangularEast:
310	case QTabBar::TriangularWest:
311	result.rheight() = qMax(tbm.height(), result.height());
312	result.rwidth() += tbm.width();
313	break;
314	default:
315	break;
316	}
317	}
318	#endif // QT_NO_TABBAR
319
320	return result;
321	}
322
323	QSize QDockAreaLayoutInfo::maximumSize() const
324	{
325	if (isEmpty())
326	return QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
327
328	int a = 0, b = QWIDGETSIZE_MAX;
329	#ifndef QT_NO_TABBAR
330	if (tabbed)
331	a = QWIDGETSIZE_MAX;
332	#endif
333
334	int min_perp = 0;
335
336	bool first = true;
337	for (int i = 0; i < item_list.size(); ++i) {
338	const QDockAreaLayoutItem &item = item_list.at(i);
339	if (item.skip())
340	continue;
341
342	QSize max_size = item.maximumSize();
343	min_perp = qMax(min_perp, perp(o, item.minimumSize()));
344
345	#ifndef QT_NO_TABBAR
346	if (tabbed) {
347	a = qMin(a, pick(o, max_size));
348	} else
349	#endif
350	{
351	if (!first)
352	a += sep;
353	a += pick(o, max_size);
354	}
355	b = qMin(b, perp(o, max_size));
356
357	a = qMin(a, int(QWIDGETSIZE_MAX));
358	b = qMin(b, int(QWIDGETSIZE_MAX));
359
360	first = false;
361	}
362
363	b = qMax(b, min_perp);
364
365	QSize result;
366	rpick(o, result) = a;
367	rperp(o, result) = b;
368
369	#ifndef QT_NO_TABBAR
370	if (tabbed) {
371	QSize tbh = tabBarSizeHint();
372	switch (tabBarShape) {
373	case QTabBar::RoundedNorth:
374	case QTabBar::RoundedSouth:
375	result.rheight() += tbh.height();
376	break;
377	case QTabBar::RoundedEast:
378	case QTabBar::RoundedWest:
379	result.rwidth() += tbh.width();
380	break;
381	default:
382	break;
383	}
384	}
385	#endif // QT_NO_TABBAR
386
387	return result;
388	}
389
390	QSize QDockAreaLayoutInfo::sizeHint() const
391	{
392	if (isEmpty())
393	return QSize(0, 0);
394
395	int a = 0, b = 0;
396	int min_perp = 0;
397	int max_perp = QWIDGETSIZE_MAX;
398	const QDockAreaLayoutItem *previous = 0;
399	for (int i = 0; i < item_list.size(); ++i) {
400	const QDockAreaLayoutItem &item = item_list.at(i);
401	if (item.skip())
402	continue;
403
404	bool gap = item.flags & QDockAreaLayoutItem::GapItem;
405
406	QSize size_hint = item.sizeHint();
407	min_perp = qMax(min_perp, perp(o, item.minimumSize()));
408	max_perp = qMin(max_perp, perp(o, item.maximumSize()));
409
410	#ifndef QT_NO_TABBAR
411	if (tabbed) {
412	a = qMax(a, gap ? item.size : pick(o, size_hint));
413	} else
414	#endif
415	{
416	if (previous && !gap && !(previous->flags & QDockAreaLayoutItem::GapItem)
417	&& !previous->hasFixedSize(o)) {
418	a += sep;
419	}
420	a += gap ? item.size : pick(o, size_hint);
421	}
422	b = qMax(b, perp(o, size_hint));
423
424	previous = &item;
425	}
426
427	max_perp = qMax(max_perp, min_perp);
428	b = qMax(b, min_perp);
429	b = qMin(b, max_perp);
430
431	QSize result;
432	rpick(o, result) = a;
433	rperp(o, result) = b;
434
435	#ifndef QT_NO_TABBAR
436	if (tabbed) {
437	QSize tbh = tabBarSizeHint();
438	switch (tabBarShape) {
439	case QTabBar::RoundedNorth:
440	case QTabBar::RoundedSouth:
441	case QTabBar::TriangularNorth:
442	case QTabBar::TriangularSouth:
443	result.rheight() += tbh.height();
444	result.rwidth() = qMax(tbh.width(), result.width());
445	break;
446	case QTabBar::RoundedEast:
447	case QTabBar::RoundedWest:
448	case QTabBar::TriangularEast:
449	case QTabBar::TriangularWest:
450	result.rheight() = qMax(tbh.height(), result.height());
451	result.rwidth() += tbh.width();
452	break;
453	default:
454	break;
455	}
456	}
457	#endif // QT_NO_TABBAR
458
459	return result;
460	}
461
462	bool QDockAreaLayoutInfo::expansive(Qt::Orientation o) const
463	{
464	for (int i = 0; i < item_list.size(); ++i) {
465	if (item_list.at(i).expansive(o))
466	return true;
467	}
468	return false;
469	}
470
471	/* QDockAreaLayoutInfo::maximumSize() doesn't return the real max size. For example,
472	if the layout is empty, it returns QWIDGETSIZE_MAX. This is so that empty dock areas
473	don't constrain the size of the QMainWindow, but sometimes we really need to know the
474	maximum size. Also, these functions take into account widgets that want to keep their
475	size (f.ex. when they are hidden and then shown, they should not change size).
476	*/
477
478	static int realMinSize(const QDockAreaLayoutInfo &info)
479	{
480	int result = 0;
481	bool first = true;
482	for (int i = 0; i < info.item_list.size(); ++i) {
483	const QDockAreaLayoutItem &item = info.item_list.at(i);
484	if (item.skip())
485	continue;
486
487	int min = 0;
488	if ((item.flags & QDockAreaLayoutItem::KeepSize) && item.size != -1)
489	min = item.size;
490	else
491	min = pick(info.o, item.minimumSize());
492
493	if (!first)
494	result += info.sep;
495	result += min;
496
497	first = false;
498	}
499
500	return result;
501	}
502
503	static int realMaxSize(const QDockAreaLayoutInfo &info)
504	{
505	int result = 0;
506	bool first = true;
507	for (int i = 0; i < info.item_list.size(); ++i) {
508	const QDockAreaLayoutItem &item = info.item_list.at(i);
509	if (item.skip())
510	continue;
511
512	int max = 0;
513	if ((item.flags & QDockAreaLayoutItem::KeepSize) && item.size != -1)
514	max = item.size;
515	else
516	max = pick(info.o, item.maximumSize());
517
518	if (!first)
519	result += info.sep;
520	result += max;
521
522	if (result >= QWIDGETSIZE_MAX)
523	return QWIDGETSIZE_MAX;
524
525	first = false;
526	}
527
528	return result;
529	}
530
531	void QDockAreaLayoutInfo::fitItems()
532	{
533	#ifndef QT_NO_TABBAR
534	if (tabbed) {
535	return;
536	}
537	#endif
538
539	QVector<QLayoutStruct> layout_struct_list(item_list.size()*2);
540	int j = 0;
541
542	int size = pick(o, rect.size());
543	int min_size = realMinSize(*this);
544	int max_size = realMaxSize(*this);
545	int last_index = -1;
546
547	const QDockAreaLayoutItem *previous = 0;
548	for (int i = 0; i < item_list.size(); ++i) {
549	QDockAreaLayoutItem &item = item_list[i];
550	if (item.skip())
551	continue;
552
553	bool gap = item.flags & QDockAreaLayoutItem::GapItem;
554	if (previous && !gap) {
555	if (!(previous->flags & QDockAreaLayoutItem::GapItem)) {
556	QLayoutStruct &ls = layout_struct_list[j++];
557	ls.init();
558	ls.minimumSize = ls.maximumSize = ls.sizeHint = previous->hasFixedSize(o) ? 0 : sep;
559	ls.empty = false;
560	}
561	}
562
563	if (item.flags & QDockAreaLayoutItem::KeepSize) {
564	// Check if the item can keep its size, without violating size constraints
565	// of other items.
566
567	if (size < min_size) {
568	// There is too little space to keep this widget's size
569	item.flags &= ~QDockAreaLayoutItem::KeepSize;
570	min_size -= item.size;
571	min_size += pick(o, item.minimumSize());
572	min_size = qMax(0, min_size);
573	} else if (size > max_size) {
574	// There is too much space to keep this widget's size
575	item.flags &= ~QDockAreaLayoutItem::KeepSize;
576	max_size -= item.size;
577	max_size += pick(o, item.maximumSize());
578	max_size = qMin<int>(QWIDGETSIZE_MAX, max_size);
579	}
580	}
581
582	last_index = j;
583	QLayoutStruct &ls = layout_struct_list[j++];
584	ls.init();
585	ls.empty = false;
586	if (item.flags & QDockAreaLayoutItem::KeepSize) {
587	ls.minimumSize = ls.maximumSize = ls.sizeHint = item.size;
588	ls.expansive = false;
589	ls.stretch = 0;
590	} else {
591	ls.maximumSize = pick(o, item.maximumSize());
592	ls.expansive = item.expansive(o);
593	ls.minimumSize = pick(o, item.minimumSize());
594	ls.sizeHint = item.size == -1 ? pick(o, item.sizeHint()) : item.size;
595	ls.stretch = ls.expansive ? ls.sizeHint : 0;
596	}
597
598	item.flags &= ~QDockAreaLayoutItem::KeepSize;
599	previous = &item;
600	}
601	layout_struct_list.resize(j);
602
603	// If there is more space than the widgets can take (due to maximum size constraints),
604	// we detect it here and stretch the last widget to take up the rest of the space.
605	if (size > max_size && last_index != -1) {
606	layout_struct_list[last_index].maximumSize = QWIDGETSIZE_MAX;
607	layout_struct_list[last_index].expansive = true;
608	}
609
610	qGeomCalc(layout_struct_list, 0, j, pick(o, rect.topLeft()), size, 0);
611
612	j = 0;
613	bool prev_gap = false;
614	bool first = true;
615	for (int i = 0; i < item_list.size(); ++i) {
616	QDockAreaLayoutItem &item = item_list[i];
617	if (item.skip())
618	continue;
619
620	bool gap = item.flags & QDockAreaLayoutItem::GapItem;
621	if (!first && !gap && !prev_gap)
622	++j;
623
624	const QLayoutStruct &ls = layout_struct_list.at(j++);
625	item.size = ls.size;
626	item.pos = ls.pos;
627
628	if (item.subinfo != 0) {
629	item.subinfo->rect = itemRect(i);
630	item.subinfo->fitItems();
631	}
632
633	prev_gap = gap;
634	first = false;
635	}
636	}
637
638	static QInternal::DockPosition dockPosHelper(const QRect &rect, const QPoint &_pos,
639	Qt::Orientation o,
640	bool nestingEnabled,
641	QDockAreaLayoutInfo::TabMode tabMode)
642	{
643	if (tabMode == QDockAreaLayoutInfo::ForceTabs)
644	return QInternal::DockCount;
645
646	QPoint pos = _pos - rect.topLeft();
647
648	int x = pos.x();
649	int y = pos.y();
650	int w = rect.width();
651	int h = rect.height();
652
653	if (tabMode != QDockAreaLayoutInfo::NoTabs) {
654	// is it in the center?
655	if (nestingEnabled) {
656	/* 2/3
657	+--------------+
658	\| \|
659	\| CCCCCCCC \|
660	2/3 \| CCCCCCCC \|
661	\| CCCCCCCC \|
662	\| \|
663	+--------------+ */
664
665	QRect center(w/6, h/6, 2w/3, 2h/3);
666	if (center.contains(pos))
667	return QInternal::DockCount;
668	} else if (o == Qt::Horizontal) {
669	/* 2/3
670	+--------------+
671	\| CCCCCCCC \|
672	\| CCCCCCCC \|
673	\| CCCCCCCC \|
674	\| CCCCCCCC \|
675	\| CCCCCCCC \|
676	+--------------+ */
677
678	if (x > w/6 && x < w*5/6)
679	return QInternal::DockCount;
680	} else {
681	/*
682	+--------------+
683	\| \|
684	2/3 \|CCCCCCCCCCCCCC\|
685	\|CCCCCCCCCCCCCC\|
686	\| \|
687	+--------------+ */
688	if (y > h/6 && y < 5*h/6)
689	return QInternal::DockCount;
690	}
691	}
692
693	// not in the center. which edge?
694	if (nestingEnabled) {
695	if (o == Qt::Horizontal) {
696	/* 1/3 1/3 1/3
697	+------------+ (we've already ruled out the center)
698	\|LLLLTTTTRRRR\|
699	\|LLLLTTTTRRRR\|
700	\|LLLLBBBBRRRR\|
701	\|LLLLBBBBRRRR\|
702	+------------+ */
703
704	if (x < w/3)
705	return QInternal::LeftDock;
706	if (x > 2*w/3)
707	return QInternal::RightDock;
708	if (y < h/2)
709	return QInternal::TopDock;
710	return QInternal::BottomDock;
711	} else {
712	/* +------------+ (we've already ruled out the center)
713	1/3 \|TTTTTTTTTTTT\|
714	\|LLLLLLRRRRRR\|
715	1/3 \|LLLLLLRRRRRR\|
716	1/3 \|BBBBBBBBBBBB\|
717	+------------+ */
718
719	if (y < h/3)
720	return QInternal::TopDock;
721	if (y > 2*h/3)
722	return QInternal::BottomDock;
723	if (x < w/2)
724	return QInternal::LeftDock;
725	return QInternal::RightDock;
726	}
727	} else {
728	if (o == Qt::Horizontal) {
729	return x < w/2
730	? QInternal::LeftDock
731	: QInternal::RightDock;
732	} else {
733	return y < h/2
734	? QInternal::TopDock
735	: QInternal::BottomDock;
736	}
737	}
738	}
739
740	QList<int> QDockAreaLayoutInfo::gapIndex(const QPoint& _pos,
741	bool nestingEnabled, TabMode tabMode) const
742	{
743	QList<int> result;
744	QRect item_rect;
745	int item_index = 0;
746
747	#ifndef QT_NO_TABBAR
748	if (tabbed) {
749	item_rect = tabContentRect();
750	} else
751	#endif
752	{
753	int pos = pick(o, _pos);
754
755	int last = -1;
756	for (int i = 0; i < item_list.size(); ++i) {
757	const QDockAreaLayoutItem &item = item_list.at(i);
758	if (item.skip())
759	continue;
760
761	last = i;
762
763	if (item.pos + item.size < pos)
764	continue;
765
766	if (item.subinfo != 0
767	#ifndef QT_NO_TABBAR
768	&& !item.subinfo->tabbed
769	#endif
770	) {
771	result = item.subinfo->gapIndex(_pos, nestingEnabled,
772	tabMode);
773	result.prepend(i);
774	return result;
775	}
776
777	item_rect = itemRect(i);
778	item_index = i;
779	break;
780	}
781
782	if (item_rect.isNull()) {
783	result.append(last + 1);
784	return result;
785	}
786	}
787
788	Q_ASSERT(!item_rect.isNull());
789
790	QInternal::DockPosition dock_pos
791	= dockPosHelper(item_rect, _pos, o, nestingEnabled, tabMode);
792
793	switch (dock_pos) {
794	case QInternal::LeftDock:
795	if (o == Qt::Horizontal)
796	result << item_index;
797	else
798	result << item_index << 0; // this subinfo doesn't exist yet, but insertGap()
799	// handles this by inserting it
800	break;
801	case QInternal::RightDock:
802	if (o == Qt::Horizontal)
803	result << item_index + 1;
804	else
805	result << item_index << 1;
806	break;
807	case QInternal::TopDock:
808	if (o == Qt::Horizontal)
809	result << item_index << 0;
810	else
811	result << item_index;
812	break;
813	case QInternal::BottomDock:
814	if (o == Qt::Horizontal)
815	result << item_index << 1;
816	else
817	result << item_index + 1;
818	break;
819	case QInternal::DockCount:
820	result << (-item_index - 1) << 0; // negative item_index means "on top of"
821	// -item_index - 1, insertGap()
822	// will insert a tabbed subinfo
823	break;
824	default:
825	break;
826	}
827
828	return result;
829	}
830
831	static inline int shrink(QLayoutStruct &ls, int delta)
832	{
833	if (ls.empty)
834	return 0;
835	int old_size = ls.size;
836	ls.size = qMax(ls.size - delta, ls.minimumSize);
837	return old_size - ls.size;
838	}
839
840	static inline int grow(QLayoutStruct &ls, int delta)
841	{
842	if (ls.empty)
843	return 0;
844	int old_size = ls.size;
845	ls.size = qMin(ls.size + delta, ls.maximumSize);
846	return ls.size - old_size;
847	}
848
849	static int separatorMoveHelper(QVector<QLayoutStruct> &list, int index, int delta, int sep)
850	{
851	// adjust sizes
852	int pos = -1;
853	for (int i = 0; i < list.size(); ++i) {
854	const QLayoutStruct &ls = list.at(i);
855	if (!ls.empty) {
856	pos = ls.pos;
857	break;
858	}
859	}
860	if (pos == -1)
861	return 0;
862
863	if (delta > 0) {
864	int growlimit = 0;
865	for (int i = 0; i<=index; ++i) {
866	const QLayoutStruct &ls = list.at(i);
867	if (ls.empty)
868	continue;
869	if (ls.maximumSize == QLAYOUTSIZE_MAX) {
870	growlimit = QLAYOUTSIZE_MAX;
871	break;
872	}
873	growlimit += ls.maximumSize - ls.size;
874	}
875	if (delta > growlimit)
876	delta = growlimit;
877
878	int d = 0;
879	for (int i = index + 1; d < delta && i < list.count(); ++i)
880	d += shrink(list[i], delta - d);
881	delta = d;
882	d = 0;
883	for (int i = index; d < delta && i >= 0; --i)
884	d += grow(list[i], delta - d);
885	} else if (delta < 0) {
886	int growlimit = 0;
887	for (int i = index + 1; i < list.count(); ++i) {
888	const QLayoutStruct &ls = list.at(i);
889	if (ls.empty)
890	continue;
891	if (ls.maximumSize == QLAYOUTSIZE_MAX) {
892	growlimit = QLAYOUTSIZE_MAX;
893	break;
894	}
895	growlimit += ls.maximumSize - ls.size;
896	}
897	if (-delta > growlimit)
898	delta = -growlimit;
899
900	int d = 0;
901	for (int i = index; d < -delta && i >= 0; --i)
902	d += shrink(list[i], -delta - d);
903	delta = -d;
904	d = 0;
905	for (int i = index + 1; d < -delta && i < list.count(); ++i)
906	d += grow(list[i], -delta - d);
907	}
908
909	// adjust positions
910	bool first = true;
911	for (int i = 0; i < list.size(); ++i) {
912	QLayoutStruct &ls = list[i];
913	if (ls.empty) {
914	ls.pos = pos + (first ? 0 : sep);
915	continue;
916	}
917	if (!first)
918	pos += sep;
919	ls.pos = pos;
920	pos += ls.size;
921	first = false;
922	}
923
924	return delta;
925	}
926
927	int QDockAreaLayoutInfo::separatorMove(int index, int delta)
928	{
929	#ifndef QT_NO_TABBAR
930	Q_ASSERT(!tabbed);
931	#endif
932
933	QVector<QLayoutStruct> list(item_list.size());
934	for (int i = 0; i < list.size(); ++i) {
935	const QDockAreaLayoutItem &item = item_list.at(i);
936	QLayoutStruct &ls = list[i];
937	Q_ASSERT(!(item.flags & QDockAreaLayoutItem::GapItem));
938	if (item.skip()) {
939	ls.empty = true;
940	} else {
941	const int separatorSpace = item.hasFixedSize(o) ? 0 : sep;
942	ls.empty = false;
943	ls.pos = item.pos;
944	ls.size = item.size + separatorSpace;
945	ls.minimumSize = pick(o, item.minimumSize()) + separatorSpace;
946	ls.maximumSize = pick(o, item.maximumSize()) + separatorSpace;
947
948	}
949	}
950
951	//the separator space has been added to the size, so we pass 0 as a parameter
952	delta = separatorMoveHelper(list, index, delta, 0 /separator/);
953
954	for (int i = 0; i < list.size(); ++i) {
955	QDockAreaLayoutItem &item = item_list[i];
956	if (item.skip())
957	continue;
958	QLayoutStruct &ls = list[i];
959	const int separatorSpace = item.hasFixedSize(o) ? 0 : sep;
960	item.size = ls.size - separatorSpace;
961	item.pos = ls.pos;
962	if (item.subinfo != 0) {
963	item.subinfo->rect = itemRect(i);
964	item.subinfo->fitItems();
965	}
966	}
967
968	return delta;
969	}
970
971	void QDockAreaLayoutInfo::unnest(int index)
972	{
973	QDockAreaLayoutItem &item = item_list[index];
974	if (item.subinfo == 0)
975	return;
976	if (item.subinfo->item_list.count() > 1)
977	return;
978
979	if (item.subinfo->item_list.count() == 0) {
980	item_list.removeAt(index);
981	} else if (item.subinfo->item_list.count() == 1) {
982	QDockAreaLayoutItem &child = item.subinfo->item_list.first();
983	if (child.widgetItem != 0) {
984	item.widgetItem = child.widgetItem;
985	delete item.subinfo;
986	item.subinfo = 0;
987	} else if (child.subinfo != 0) {
988	QDockAreaLayoutInfo *tmp = item.subinfo;
989	item.subinfo = child.subinfo;
990	child.subinfo = 0;
991	tmp->item_list.clear();
992	delete tmp;
993	}
994	}
995	}
996
997	void QDockAreaLayoutInfo::remove(const QList<int> &path)
998	{
999	Q_ASSERT(!path.isEmpty());
1000
1001	if (path.count() > 1) {
1002	const int index = path.first();
1003	QDockAreaLayoutItem &item = item_list[index];
1004	Q_ASSERT(item.subinfo != 0);
1005	item.subinfo->remove(path.mid(1));
1006	unnest(index);
1007	} else {
1008	int index = path.first();
1009	item_list.removeAt(index);
1010	}
1011	}
1012
1013	QLayoutItem *QDockAreaLayoutInfo::plug(const QList<int> &path)
1014	{
1015	Q_ASSERT(!path.isEmpty());
1016
1017	int index = path.first();
1018	if (index < 0)
1019	index = -index - 1;
1020
1021	if (path.count() > 1) {
1022	const QDockAreaLayoutItem &item = item_list.at(index);
1023	Q_ASSERT(item.subinfo != 0);
1024	return item.subinfo->plug(path.mid(1));
1025	}
1026
1027	QDockAreaLayoutItem &item = item_list[index];
1028
1029	Q_ASSERT(item.widgetItem != 0);
1030	Q_ASSERT(item.flags & QDockAreaLayoutItem::GapItem);
1031	item.flags &= ~QDockAreaLayoutItem::GapItem;
1032
1033	QRect result;
1034
1035	#ifndef QT_NO_TABBAR
1036	if (tabbed) {
1037	} else
1038	#endif
1039	{
1040	int prev = this->prev(index);
1041	int next = this->next(index);
1042
1043	if (prev != -1 && !(item_list.at(prev).flags & QDockAreaLayoutItem::GapItem)) {
1044	item.pos += sep;
1045	item.size -= sep;
1046	}
1047	if (next != -1 && !(item_list.at(next).flags & QDockAreaLayoutItem::GapItem))
1048	item.size -= sep;
1049
1050	QPoint pos;
1051	rpick(o, pos) = item.pos;
1052	rperp(o, pos) = perp(o, rect.topLeft());
1053	QSize s;
1054	rpick(o, s) = item.size;
1055	rperp(o, s) = perp(o, rect.size());
1056	result = QRect(pos, s);
1057	}
1058
1059	return item.widgetItem;
1060	}
1061
1062	QLayoutItem *QDockAreaLayoutInfo::unplug(const QList<int> &path)
1063	{
1064	Q_ASSERT(!path.isEmpty());
1065
1066	const int index = path.first();
1067	if (path.count() > 1) {
1068	const QDockAreaLayoutItem &item = item_list.at(index);
1069	Q_ASSERT(item.subinfo != 0);
1070	return item.subinfo->unplug(path.mid(1));
1071	}
1072
1073	QDockAreaLayoutItem &item = item_list[index];
1074	int prev = this->prev(index);
1075	int next = this->next(index);
1076
1077	Q_ASSERT(!(item.flags & QDockAreaLayoutItem::GapItem));
1078	item.flags \|= QDockAreaLayoutItem::GapItem;
1079
1080	#ifndef QT_NO_TABBAR
1081	if (tabbed) {
1082	} else
1083	#endif
1084	{
1085	if (prev != -1 && !(item_list.at(prev).flags & QDockAreaLayoutItem::GapItem)) {
1086	item.pos -= sep;
1087	item.size += sep;
1088	}
1089	if (next != -1 && !(item_list.at(next).flags & QDockAreaLayoutItem::GapItem))
1090	item.size += sep;
1091	}
1092
1093	return item.widgetItem;
1094	}
1095
1096	#ifndef QT_NO_TABBAR
1097
1098	quintptr QDockAreaLayoutInfo::currentTabId() const
1099	{
1100	if (!tabbed \|\| tabBar == 0)
1101	return 0;
1102
1103	int index = tabBar->currentIndex();
1104	if (index == -1)
1105	return 0;
1106
1107	return qvariant_cast<quintptr>(tabBar->tabData(index));
1108	}
1109
1110	void QDockAreaLayoutInfo::setCurrentTab(QWidget *widget)
1111	{
1112	setCurrentTabId(reinterpret_cast<quintptr>(widget));
1113	}
1114
1115	void QDockAreaLayoutInfo::setCurrentTabId(quintptr id)
1116	{
1117	if (!tabbed \|\| tabBar == 0)
1118	return;
1119
1120	for (int i = 0; i < tabBar->count(); ++i) {
1121	if (qvariant_cast<quintptr>(tabBar->tabData(i)) == id) {
1122	tabBar->setCurrentIndex(i);
1123	return;
1124	}
1125	}
1126	}
1127
1128	#endif // QT_NO_TABBAR
1129
1130	static QRect dockedGeometry(QWidget *widget)
1131	{
1132	int titleHeight = 0;
1133
1134	QDockWidgetLayout *layout
1135	= qobject_cast<QDockWidgetLayout*>(widget->layout());
1136	if(layout != 0 && layout->nativeWindowDeco())
1137	titleHeight = layout->titleHeight();
1138
1139	QRect result = widget->geometry();
1140	result.adjust(0, -titleHeight, 0, 0);
1141	return result;
1142	}
1143
1144	bool QDockAreaLayoutInfo::insertGap(const QList<int> &path, QLayoutItem *dockWidgetItem)
1145	{
1146	Q_ASSERT(!path.isEmpty());
1147
1148	bool insert_tabbed = false;
1149	int index = path.first();
1150	if (index < 0) {
1151	insert_tabbed = true;
1152	index = -index - 1;
1153	}
1154
1155	// dump(qDebug() << "insertGap() before:" << index << tabIndex, *this, QString());
1156
1157	if (path.count() > 1) {
1158	QDockAreaLayoutItem &item = item_list[index];
1159
1160	if (item.subinfo == 0
1161	#ifndef QT_NO_TABBAR
1162	\|\| (item.subinfo->tabbed && !insert_tabbed)
1163	#endif
1164	) {
1165
1166	// this is not yet a nested layout - make it
1167
1168	QDockAreaLayoutInfo *subinfo = item.subinfo;
1169	QLayoutItem *widgetItem = item.widgetItem;
1170	QPlaceHolderItem *placeHolderItem = item.placeHolderItem;
1171	QRect r = subinfo == 0 ? widgetItem ? dockedGeometry(widgetItem->widget()) : placeHolderItem->topLevelRect : subinfo->rect;
1172
1173	Qt::Orientation opposite = o == Qt::Horizontal ? Qt::Vertical : Qt::Horizontal;
1174	#ifdef QT_NO_TABBAR
1175	const int tabBarShape = 0;
1176	#endif
1177	QDockAreaLayoutInfo *new_info
1178	= new QDockAreaLayoutInfo(sep, dockPos, opposite, tabBarShape, mainWindow);
1179
1180	//item become a new top-level
1181	item.subinfo = new_info;
1182	item.widgetItem = 0;
1183	item.placeHolderItem = 0;
1184
1185	QDockAreaLayoutItem new_item
1186	= widgetItem == 0
1187	? QDockAreaLayoutItem(subinfo)
1188	: widgetItem ? QDockAreaLayoutItem(widgetItem) : QDockAreaLayoutItem(placeHolderItem);
1189	new_item.size = pick(opposite, r.size());
1190	new_item.pos = pick(opposite, r.topLeft());
1191	new_info->item_list.append(new_item);
1192	#ifndef QT_NO_TABBAR
1193	if (insert_tabbed) {
1194	new_info->tabbed = true;
1195	}
1196	#endif
1197	}
1198
1199	return item.subinfo->insertGap(path.mid(1), dockWidgetItem);
1200	}
1201
1202	// create the gap item
1203	QDockAreaLayoutItem gap_item;
1204	gap_item.flags \|= QDockAreaLayoutItem::GapItem;
1205	gap_item.widgetItem = dockWidgetItem; // so minimumSize(), maximumSize() and
1206	// sizeHint() will work
1207	#ifndef QT_NO_TABBAR
1208	if (!tabbed)
1209	#endif
1210	{
1211	int prev = this->prev(index);
1212	int next = this->next(index - 1);
1213	// find out how much space we have in the layout
1214	int space = 0;
1215	if (isEmpty()) {
1216	// I am an empty dock area, therefore I am a top-level dock area.
1217	switch (dockPos) {
1218	case QInternal::LeftDock:
1219	case QInternal::RightDock:
1220	if (o == Qt::Vertical) {
1221	// the "size" is the height of the dock area (remember we are empty)
1222	space = pick(Qt::Vertical, rect.size());
1223	} else {
1224	space = pick(Qt::Horizontal, dockWidgetItem->widget()->size());
1225	}
1226	break;
1227	case QInternal::TopDock:
1228	case QInternal::BottomDock:
1229	default:
1230	if (o == Qt::Horizontal) {
1231	// the "size" is width of the dock area
1232	space = pick(Qt::Horizontal, rect.size());
1233	} else {
1234	space = pick(Qt::Vertical, dockWidgetItem->widget()->size());
1235	}
1236	break;
1237	}
1238	} else {
1239	for (int i = 0; i < item_list.count(); ++i) {
1240	const QDockAreaLayoutItem &item = item_list.at(i);
1241	if (item.skip())
1242	continue;
1243	Q_ASSERT(!(item.flags & QDockAreaLayoutItem::GapItem));
1244	space += item.size - pick(o, item.minimumSize());
1245	}
1246	}
1247
1248	// find the actual size of the gap
1249	int gap_size = 0;
1250	int sep_size = 0;
1251	if (isEmpty()) {
1252	gap_size = space;
1253	sep_size = 0;
1254	} else {
1255	QRect r = dockedGeometry(dockWidgetItem->widget());
1256	gap_size = pick(o, r.size());
1257	if (prev != -1 && !(item_list.at(prev).flags & QDockAreaLayoutItem::GapItem))
1258	sep_size += sep;
1259	if (next != -1 && !(item_list.at(next).flags & QDockAreaLayoutItem::GapItem))
1260	sep_size += sep;
1261	}
1262	if (gap_size + sep_size > space)
1263	gap_size = pick(o, gap_item.minimumSize());
1264	gap_item.size = gap_size + sep_size;
1265	}
1266
1267	// finally, insert the gap
1268	item_list.insert(index, gap_item);
1269
1270	// dump(qDebug() << "insertGap() after:" << index << tabIndex, *this, QString());
1271
1272	return true;
1273	}
1274
1275	QDockAreaLayoutInfo QDockAreaLayoutInfo::info(QWidget widget)
1276	{
1277	for (int i = 0; i < item_list.count(); ++i) {
1278	const QDockAreaLayoutItem &item = item_list.at(i);
1279	if (item.skip())
1280	continue;
1281
1282	#ifndef QT_NO_TABBAR
1283	if (tabbed && widget == tabBar)
1284	return this;
1285	#endif
1286
1287	if (item.widgetItem != 0 && item.widgetItem->widget() == widget)
1288	return this;
1289
1290	if (item.subinfo != 0) {
1291	if (QDockAreaLayoutInfo *result = item.subinfo->info(widget))
1292	return result;
1293	}
1294	}
1295
1296	return 0;
1297	}
1298
1299	QDockAreaLayoutInfo *QDockAreaLayoutInfo::info(const QList<int> &path)
1300	{
1301	int index = path.first();
1302	if (index < 0)
1303	index = -index - 1;
1304	if (index >= item_list.count())
1305	return this;
1306	if (path.count() == 1 \|\| item_list[index].subinfo == 0)
1307	return this;
1308	return item_list[index].subinfo->info(path.mid(1));
1309	}
1310
1311	QRect QDockAreaLayoutInfo::itemRect(int index) const
1312	{
1313	const QDockAreaLayoutItem &item = item_list.at(index);
1314
1315	if (item.skip())
1316	return QRect();
1317
1318	QRect result;
1319
1320	#ifndef QT_NO_TABBAR
1321	if (tabbed) {
1322	if (tabId(item) == currentTabId())
1323	result = tabContentRect();
1324	} else
1325	#endif
1326	{
1327	QPoint pos;
1328	rpick(o, pos) = item.pos;
1329	rperp(o, pos) = perp(o, rect.topLeft());
1330	QSize s;
1331	rpick(o, s) = item.size;
1332	rperp(o, s) = perp(o, rect.size());
1333	result = QRect(pos, s);
1334	}
1335
1336	return result;
1337	}
1338
1339	QRect QDockAreaLayoutInfo::itemRect(const QList<int> &path) const
1340	{
1341	Q_ASSERT(!path.isEmpty());
1342
1343	const int index = path.first();
1344	if (path.count() > 1) {
1345	const QDockAreaLayoutItem &item = item_list.at(index);
1346	Q_ASSERT(item.subinfo != 0);
1347	return item.subinfo->itemRect(path.mid(1));
1348	}
1349
1350	return itemRect(index);
1351	}
1352
1353	QRect QDockAreaLayoutInfo::separatorRect(int index) const
1354	{
1355	#ifndef QT_NO_TABBAR
1356	if (tabbed)
1357	return QRect();
1358	#endif
1359
1360	const QDockAreaLayoutItem &item = item_list.at(index);
1361	if (item.skip())
1362	return QRect();
1363
1364	QPoint pos = rect.topLeft();
1365	rpick(o, pos) = item.pos + item.size;
1366	QSize s = rect.size();
1367	rpick(o, s) = sep;
1368
1369	return QRect(pos, s);
1370	}
1371
1372	QRect QDockAreaLayoutInfo::separatorRect(const QList<int> &path) const
1373	{
1374	Q_ASSERT(!path.isEmpty());
1375
1376	const int index = path.first();
1377	if (path.count() > 1) {
1378	const QDockAreaLayoutItem &item = item_list.at(index);
1379	Q_ASSERT(item.subinfo != 0);
1380	return item.subinfo->separatorRect(path.mid(1));
1381	}
1382	return separatorRect(index);
1383	}
1384
1385	QList<int> QDockAreaLayoutInfo::findSeparator(const QPoint &_pos) const
1386	{
1387	#ifndef QT_NO_TABBAR
1388	if (tabbed)
1389	return QList<int>();
1390	#endif
1391
1392	int pos = pick(o, _pos);
1393
1394	for (int i = 0; i < item_list.size(); ++i) {
1395	const QDockAreaLayoutItem &item = item_list.at(i);
1396	if (item.skip() \|\| (item.flags & QDockAreaLayoutItem::GapItem))
1397	continue;
1398
1399	if (item.pos + item.size > pos) {
1400	if (item.subinfo != 0) {
1401	QList<int> result = item.subinfo->findSeparator(_pos);
1402	if (!result.isEmpty()) {
1403	result.prepend(i);
1404	return result;
1405	} else {
1406	return QList<int>();
1407	}
1408	}
1409	}
1410
1411	int next = this->next(i);
1412	if (next == -1 \|\| (item_list.at(next).flags & QDockAreaLayoutItem::GapItem))
1413	continue;
1414
1415	QRect sepRect = separatorRect(i);
1416	if (!sepRect.isNull() && sep == 1)
1417	sepRect.adjust(-2, -2, 2, 2);
1418	//we also make sure we don't find a separator that's not there
1419	if (sepRect.contains(_pos) && !item.hasFixedSize(o)) {
1420	return QList<int>() << i;
1421	}
1422
1423	}
1424
1425	return QList<int>();
1426	}
1427
1428	QList<int> QDockAreaLayoutInfo::indexOfPlaceHolder(const QString &objectName) const
1429	{
1430	for (int i = 0; i < item_list.size(); ++i) {
1431	const QDockAreaLayoutItem &item = item_list.at(i);
1432
1433	if (item.subinfo != 0) {
1434	QList<int> result = item.subinfo->indexOfPlaceHolder(objectName);
1435	if (!result.isEmpty()) {
1436	result.prepend(i);
1437	return result;
1438	}
1439	continue;
1440	}
1441
1442	if (item.placeHolderItem != 0 && item.placeHolderItem->objectName == objectName) {
1443	QList<int> result;
1444	result << i;
1445	return result;
1446	}
1447	}
1448
1449	return QList<int>();
1450	}
1451
1452	QList<int> QDockAreaLayoutInfo::indexOf(QWidget *widget) const
1453	{
1454	for (int i = 0; i < item_list.size(); ++i) {
1455	const QDockAreaLayoutItem &item = item_list.at(i);
1456
1457	if (item.placeHolderItem != 0)
1458	continue;
1459
1460	if (item.subinfo != 0) {
1461	QList<int> result = item.subinfo->indexOf(widget);
1462	if (!result.isEmpty()) {
1463	result.prepend(i);
1464	return result;
1465	}
1466	continue;
1467	}
1468
1469	if (!(item.flags & QDockAreaLayoutItem::GapItem) && item.widgetItem->widget() == widget) {
1470	QList<int> result;
1471	result << i;
1472	return result;
1473	}
1474	}
1475
1476	return QList<int>();
1477	}
1478
1479	QMainWindowLayout *QDockAreaLayoutInfo::mainWindowLayout() const
1480	{
1481	QMainWindowLayout result = qobject_cast<QMainWindowLayout>(mainWindow->layout());
1482	Q_ASSERT(result != 0);
1483	return result;
1484	}
1485
1486	bool QDockAreaLayoutInfo::hasFixedSize() const
1487	{
1488	return perp(o, minimumSize()) == perp(o, maximumSize());
1489	}
1490
1491
1492	void QDockAreaLayoutInfo::apply(bool animate)
1493	{
1494	QWidgetAnimator &widgetAnimator = mainWindowLayout()->widgetAnimator;
1495
1496	#ifndef QT_NO_TABBAR
1497	if (tabbed) {
1498	QRect tab_rect;
1499	QSize tbh = tabBarSizeHint();
1500
1501	if (tabBarVisible) {
1502	switch (tabBarShape) {
1503	case QTabBar::RoundedNorth:
1504	case QTabBar::TriangularNorth:
1505	tab_rect = QRect(rect.left(), rect.top(), rect.width(), tbh.height());
1506	break;
1507	case QTabBar::RoundedSouth:
1508	case QTabBar::TriangularSouth:
1509	tab_rect = QRect(rect.left(), rect.bottom() - tbh.height() + 1,
1510	rect.width(), tbh.height());
1511	break;
1512	case QTabBar::RoundedEast:
1513	case QTabBar::TriangularEast:
1514	tab_rect = QRect(rect.right() - tbh.width() + 1, rect.top(),
1515	tbh.width(), rect.height());
1516	break;
1517	case QTabBar::RoundedWest:
1518	case QTabBar::TriangularWest:
1519	tab_rect = QRect(rect.left(), rect.top(),
1520	tbh.width(), rect.height());
1521	break;
1522	default:
1523	break;
1524	}
1525	}
1526
1527	widgetAnimator.animate(tabBar, tab_rect, animate);
1528	}
1529	#endif // QT_NO_TABBAR
1530
1531	for (int i = 0; i < item_list.size(); ++i) {
1532	QDockAreaLayoutItem &item = item_list[i];
1533
1534	if (item.flags & QDockAreaLayoutItem::GapItem)
1535	continue;
1536
1537	if (item.subinfo != 0) {
1538	item.subinfo->apply(animate);
1539	continue;
1540	}
1541
1542	if (item.skip())
1543	continue;
1544
1545	Q_ASSERT(item.widgetItem);
1546	QRect r = itemRect(i);
1547	QWidget *w = item.widgetItem->widget();
1548
1549	QRect geo = w->geometry();
1550	widgetAnimator.animate(w, r, animate);
1551	if (!w->isHidden() && w->window()->isVisible()) {
1552	QDockWidget dw = qobject_cast<QDockWidget>(w);
1553	if (!r.isValid() && geo.right() >= 0 && geo.bottom() >= 0) {
1554	dw->lower();
1555	emit dw->visibilityChanged(false);
1556	} else if (r.isValid()
1557	&& (geo.right() < 0 \|\| geo.bottom() < 0)) {
1558	emit dw->visibilityChanged(true);
1559	}
1560	}
1561	}
1562	#ifndef QT_NO_TABBAR
1563	if (sep == 1)
1564	updateSeparatorWidgets();
1565	#endif //QT_NO_TABBAR
1566	}
1567
1568	static void paintSep(QPainter p, QWidget w, const QRect &r, Qt::Orientation o, bool mouse_over)
1569	{
1570	QStyleOption opt(0);
1571	opt.state = QStyle::State_None;
1572	if (w->isEnabled())
1573	opt.state \|= QStyle::State_Enabled;
1574	if (o != Qt::Horizontal)
1575	opt.state \|= QStyle::State_Horizontal;
1576	if (mouse_over)
1577	opt.state \|= QStyle::State_MouseOver;
1578	opt.rect = r;
1579	opt.palette = w->palette();
1580
1581	w->style()->drawPrimitive(QStyle::PE_IndicatorDockWidgetResizeHandle, &opt, p, w);
1582	}
1583
1584	QRegion QDockAreaLayoutInfo::separatorRegion() const
1585	{
1586	QRegion result;
1587
1588	if (isEmpty())
1589	return result;
1590	#ifndef QT_NO_TABBAR
1591	if (tabbed)
1592	return result;
1593	#endif
1594
1595	for (int i = 0; i < item_list.count(); ++i) {
1596	const QDockAreaLayoutItem &item = item_list.at(i);
1597
1598	if (item.skip())
1599	continue;
1600
1601	int next = this->next(i);
1602
1603	if (item.subinfo)
1604	result \|= item.subinfo->separatorRegion();
1605
1606	if (next == -1)
1607	break;
1608	result \|= separatorRect(i);
1609	}
1610
1611	return result;
1612	}
1613
1614	void QDockAreaLayoutInfo::paintSeparators(QPainter p, QWidget widget,
1615	const QRegion &clip,
1616	const QPoint &mouse) const
1617	{
1618	if (isEmpty())
1619	return;
1620	#ifndef QT_NO_TABBAR
1621	if (tabbed)
1622	return;
1623	#endif
1624
1625	for (int i = 0; i < item_list.count(); ++i) {
1626	const QDockAreaLayoutItem &item = item_list.at(i);
1627
1628	if (item.skip())
1629	continue;
1630
1631	int next = this->next(i);
1632	if ((item.flags & QDockAreaLayoutItem::GapItem)
1633	\|\| (next != -1 && (item_list.at(next).flags & QDockAreaLayoutItem::GapItem)))
1634	continue;
1635
1636	if (item.subinfo) {
1637	if (clip.contains(item.subinfo->rect))
1638	item.subinfo->paintSeparators(p, widget, clip, mouse);
1639	}
1640
1641	if (next == -1)
1642	break;
1643	QRect r = separatorRect(i);
1644	if (clip.contains(r) && !item.hasFixedSize(o))
1645	paintSep(p, widget, r, o, r.contains(mouse));
1646	}
1647	}
1648
1649	int QDockAreaLayoutInfo::next(int index) const
1650	{
1651	for (int i = index + 1; i < item_list.size(); ++i) {
1652	if (!item_list.at(i).skip())
1653	return i;
1654	}
1655	return -1;
1656	}
1657
1658	int QDockAreaLayoutInfo::prev(int index) const
1659	{
1660	for (int i = index - 1; i >= 0; --i) {
1661	if (!item_list.at(i).skip())
1662	return i;
1663	}
1664	return -1;
1665	}
1666
1667	void QDockAreaLayoutInfo::tab(int index, QLayoutItem *dockWidgetItem)
1668	{
1669	#ifdef QT_NO_TABBAR
1670	Q_UNUSED(index);
1671	Q_UNUSED(dockWidgetItem);
1672	#else
1673	if (tabbed) {
1674	item_list.append(QDockAreaLayoutItem(dockWidgetItem));
1675	updateTabBar();
1676	setCurrentTab(dockWidgetItem->widget());
1677	} else {
1678	QDockAreaLayoutInfo *new_info
1679	= new QDockAreaLayoutInfo(sep, dockPos, o, tabBarShape, mainWindow);
1680	item_list[index].subinfo = new_info;
1681	new_info->item_list.append(item_list.at(index).widgetItem);
1682	item_list[index].widgetItem = 0;
1683	new_info->item_list.append(dockWidgetItem);
1684	new_info->tabbed = true;
1685	new_info->updateTabBar();
1686	new_info->setCurrentTab(dockWidgetItem->widget());
1687	}
1688	#endif // QT_NO_TABBAR
1689	}
1690
1691	void QDockAreaLayoutInfo::split(int index, Qt::Orientation orientation,
1692	QLayoutItem *dockWidgetItem)
1693	{
1694	if (orientation == o) {
1695	item_list.insert(index + 1, QDockAreaLayoutItem(dockWidgetItem));
1696	} else {
1697	#ifdef QT_NO_TABBAR
1698	const int tabBarShape = 0;
1699	#endif
1700	QDockAreaLayoutInfo *new_info
1701	= new QDockAreaLayoutInfo(sep, dockPos, orientation, tabBarShape, mainWindow);
1702	item_list[index].subinfo = new_info;
1703	new_info->item_list.append(item_list.at(index).widgetItem);
1704	item_list[index].widgetItem = 0;
1705	new_info->item_list.append(dockWidgetItem);
1706	}
1707	}
1708
1709	QDockAreaLayoutItem &QDockAreaLayoutInfo::item(const QList<int> &path)
1710	{
1711	Q_ASSERT(!path.isEmpty());
1712	const int index = path.first();
1713	if (path.count() > 1) {
1714	const QDockAreaLayoutItem &item = item_list[index];
1715	Q_ASSERT(item.subinfo != 0);
1716	return item.subinfo->item(path.mid(1));
1717	}
1718	return item_list[index];
1719	}
1720
1721	QLayoutItem QDockAreaLayoutInfo::itemAt(int x, int index) const
1722	{
1723	for (int i = 0; i < item_list.count(); ++i) {
1724	const QDockAreaLayoutItem &item = item_list.at(i);
1725	if (item.placeHolderItem != 0)
1726	continue;
1727	if (item.subinfo) {
1728	if (QLayoutItem *ret = item.subinfo->itemAt(x, index))
1729	return ret;
1730	} else if (item.widgetItem) {
1731	if ((*x)++ == index)
1732	return item.widgetItem;
1733	}
1734	}
1735	return 0;
1736	}
1737
1738	QLayoutItem QDockAreaLayoutInfo::takeAt(int x, int index)
1739	{
1740	for (int i = 0; i < item_list.count(); ++i) {
1741	QDockAreaLayoutItem &item = item_list[i];
1742	if (item.placeHolderItem != 0)
1743	continue;
1744	else if (item.subinfo) {
1745	if (QLayoutItem *ret = item.subinfo->takeAt(x, index)) {
1746	unnest(i);
1747	return ret;
1748	}
1749	} else if (item.widgetItem) {
1750	if ((*x)++ == index) {
1751	item.placeHolderItem = new QPlaceHolderItem(item.widgetItem->widget());
1752	QLayoutItem *ret = item.widgetItem;
1753	item.widgetItem = 0;
1754	if (item.size != -1)
1755	item.flags \|= QDockAreaLayoutItem::KeepSize;
1756	return ret;
1757	}
1758	}
1759	}
1760	return 0;
1761	}
1762
1763	void QDockAreaLayoutInfo::deleteAllLayoutItems()
1764	{
1765	for (int i = 0; i < item_list.count(); ++i) {
1766	QDockAreaLayoutItem &item= item_list[i];
1767	if (item.subinfo) {
1768	item.subinfo->deleteAllLayoutItems();
1769	} else {
1770	delete item.widgetItem;
1771	item.widgetItem = 0;
1772	}
1773	}
1774	}
1775
1776	void QDockAreaLayoutInfo::saveState(QDataStream &stream) const
1777	{
1778	#ifndef QT_NO_TABBAR
1779	if (tabbed) {
1780	stream << (uchar) TabMarker;
1781
1782	// write the index in item_list of the widget that's currently on top.
1783	quintptr id = currentTabId();
1784	int index = -1;
1785	for (int i = 0; i < item_list.count(); ++i) {
1786	if (tabId(item_list.at(i)) == id) {
1787	index = i;
1788	break;
1789	}
1790	}
1791	stream << index;
1792	} else
1793	#endif // QT_NO_TABBAR
1794	{
1795	stream << (uchar) SequenceMarker;
1796	}
1797
1798	stream << (uchar) o << item_list.count();
1799
1800	for (int i = 0; i < item_list.count(); ++i) {
1801	const QDockAreaLayoutItem &item = item_list.at(i);
1802	if (item.widgetItem != 0) {
1803	stream << (uchar) WidgetMarker;
1804	QWidget *w = item.widgetItem->widget();
1805	QString name = w->objectName();
1806	if (name.isEmpty()) {
1807	qWarning("QMainWindow::saveState(): 'objectName' not set for QDockWidget %p '%s;",
1808	w, qPrintable(w->windowTitle()));
1809	}
1810	stream << name;
1811
1812	uchar flags = 0;
1813	if (!w->isHidden())
1814	flags \|= StateFlagVisible;
1815	if (w->isWindow())
1816	flags \|= StateFlagFloating;
1817	stream << flags;
1818
1819	if (w->isWindow()) {
1820	stream << w->x() << w->y() << w->width() << w->height();
1821	} else {
1822	stream << item.pos << item.size << pick(o, item.minimumSize())
1823	<< pick(o, item.maximumSize());
1824	}
1825	} else if (item.placeHolderItem != 0) {
1826	stream << (uchar) WidgetMarker;
1827	stream << item.placeHolderItem->objectName;
1828	uchar flags = 0;
1829	if (!item.placeHolderItem->hidden)
1830	flags \|= StateFlagVisible;
1831	if (item.placeHolderItem->window)
1832	flags \|= StateFlagFloating;
1833	stream << flags;
1834	if (item.placeHolderItem->window) {
1835	QRect r = item.placeHolderItem->topLevelRect;
1836	stream << r.x() << r.y() << r.width() << r.height();
1837	} else {
1838	stream << item.pos << item.size << (int)0 << (int)0;
1839	}
1840	} else if (item.subinfo != 0) {
1841	stream << (uchar) SequenceMarker << item.pos << item.size << pick(o, item.minimumSize()) << pick(o, item.maximumSize());
1842	item.subinfo->saveState(stream);
1843	}
1844	}
1845	}
1846
1847	static Qt::DockWidgetArea toDockWidgetArea(QInternal::DockPosition pos)
1848	{
1849	switch (pos) {
1850	case QInternal::LeftDock: return Qt::LeftDockWidgetArea;
1851	case QInternal::RightDock: return Qt::RightDockWidgetArea;
1852	case QInternal::TopDock: return Qt::TopDockWidgetArea;
1853	case QInternal::BottomDock: return Qt::BottomDockWidgetArea;
1854	default: break;
1855	}
1856	return Qt::NoDockWidgetArea;
1857	}
1858
1859	static QRect constrainedRect(QRect rect, const QRect &desktop)
1860	{
1861	if (desktop.isValid()) {
1862	rect.setWidth(qMin(rect.width(), desktop.width()));
1863	rect.setHeight(qMin(rect.height(), desktop.height()));
1864	rect.moveLeft(qMax(rect.left(), desktop.left()));
1865	rect.moveTop(qMax(rect.top(), desktop.top()));
1866	rect.moveRight(qMin(rect.right(), desktop.right()));
1867	rect.moveBottom(qMin(rect.bottom(), desktop.bottom()));
1868	}
1869
1870	return rect;
1871	}
1872
1873	bool QDockAreaLayoutInfo::restoreState(QDataStream &stream, QList<QDockWidget*> &widgets, bool testing)
1874	{
1875	uchar marker;
1876	stream >> marker;
1877	if (marker != TabMarker && marker != SequenceMarker)
1878	return false;
1879
1880	#ifndef QT_NO_TABBAR
1881	tabbed = marker == TabMarker;
1882
1883	int index = -1;
1884	if (tabbed)
1885	stream >> index;
1886	#endif
1887
1888	uchar orientation;
1889	stream >> orientation;
1890	o = static_cast<Qt::Orientation>(orientation);
1891
1892	int cnt;
1893	stream >> cnt;
1894
1895	for (int i = 0; i < cnt; ++i) {
1896	uchar nextMarker;
1897	stream >> nextMarker;
1898	if (nextMarker == WidgetMarker) {
1899	QString name;
1900	uchar flags;
1901	stream >> name >> flags;
1902	if (name.isEmpty()) {
1903	int dummy;
1904	stream >> dummy >> dummy >> dummy >> dummy;
1905	continue;
1906	}
1907
1908	QDockWidget *widget = 0;
1909	for (int j = 0; j < widgets.count(); ++j) {
1910	if (widgets.at(j)->objectName() == name) {
1911	widget = widgets.takeAt(j);
1912	break;
1913	}
1914	}
1915
1916	if (widget == 0) {
1917	QPlaceHolderItem *placeHolder = new QPlaceHolderItem;
1918	QDockAreaLayoutItem item(placeHolder);
1919
1920	placeHolder->objectName = name;
1921	placeHolder->window = flags & StateFlagFloating;
1922	placeHolder->hidden = !(flags & StateFlagVisible);
1923	if (placeHolder->window) {
1924	int x, y, w, h;
1925	stream >> x >> y >> w >> h;
1926	placeHolder->topLevelRect = QRect(x, y, w, h);
1927	} else {
1928	int dummy;
1929	stream >> item.pos >> item.size >> dummy >> dummy;
1930	}
1931	if (item.size != -1)
1932	item.flags \|= QDockAreaLayoutItem::KeepSize;
1933	if (!testing)
1934	item_list.append(item);
1935	} else {
1936	QDockAreaLayoutItem item(new QDockWidgetItem(widget));
1937	if (flags & StateFlagFloating) {
1938	bool drawer = false;
1939	#ifdef Q_WS_MAC // drawer support
1940	extern bool qt_mac_is_macdrawer(const QWidget *); //qwidget_mac.cpp
1941	extern bool qt_mac_set_drawer_preferred_edge(QWidget *, Qt::DockWidgetArea); //qwidget_mac.cpp
1942	drawer = qt_mac_is_macdrawer(widget);
1943	#endif
1944
1945	if (!testing) {
1946	widget->hide();
1947	if (!drawer)
1948	widget->setFloating(true);
1949	}
1950
1951	int x, y, w, h;
1952	stream >> x >> y >> w >> h;
1953
1954	#ifdef Q_WS_MAC // drawer support
1955	if (drawer) {
1956	mainWindow->window()->createWinId();
1957	widget->window()->createWinId();
1958	qt_mac_set_drawer_preferred_edge(widget, toDockWidgetArea(dockPos));
1959	} else
1960	#endif
1961	if (!testing) {
1962	QRect r(x, y, w, h);
1963	QDesktopWidget *desktop = QApplication::desktop();
1964	if (desktop->isVirtualDesktop())
1965	r = constrainedRect(r, desktop->screenGeometry(desktop->screenNumber(r.topLeft())));
1966	else
1967	r = constrainedRect(r, desktop->screenGeometry(widget));
1968	widget->move(r.topLeft());
1969	widget->resize(r.size());
1970	}
1971
1972	if (!testing) {
1973	widget->setVisible(flags & StateFlagVisible);
1974	item_list.append(item);
1975	}
1976	} else {
1977	int dummy;
1978	stream >> item.pos >> item.size >> dummy >> dummy;
1979	if (!testing) {
1980	item_list.append(item);
1981	widget->setFloating(false);
1982	widget->setVisible(flags & StateFlagVisible);
1983	emit widget->dockLocationChanged(toDockWidgetArea(dockPos));
1984	}
1985	}
1986
1987	}
1988	} else if (nextMarker == SequenceMarker) {
1989	int dummy;
1990	#ifdef QT_NO_TABBAR
1991	const int tabBarShape = 0;
1992	#endif
1993	QDockAreaLayoutInfo *info = new QDockAreaLayoutInfo(sep, dockPos, o,
1994	tabBarShape, mainWindow);
1995	QDockAreaLayoutItem item(info);
1996	stream >> item.pos >> item.size >> dummy >> dummy;
1997	if (!info->restoreState(stream, widgets, testing))
1998	return false;
1999
2000	if (!testing) {
2001	item_list.append(item);
2002	}
2003	} else {
2004	return false;
2005	}
2006	}
2007
2008	#ifndef QT_NO_TABBAR
2009	if (!testing && tabbed && index >= 0 && index < item_list.count()) {
2010	updateTabBar();
2011	setCurrentTabId(tabId(item_list.at(index)));
2012	}
2013	if (!testing && sep == 1)
2014	updateSeparatorWidgets();
2015	#endif
2016
2017	return true;
2018	}
2019
2020	#ifndef QT_NO_TABBAR
2021	void QDockAreaLayoutInfo::updateSeparatorWidgets() const
2022	{
2023	if (tabbed) {
2024	separatorWidgets.clear();
2025	return;
2026	}
2027
2028	int j = 0;
2029	for (int i = 0; i < item_list.count(); ++i) {
2030	const QDockAreaLayoutItem &item = item_list.at(i);
2031
2032	if (item.skip())
2033	continue;
2034
2035	int next = this->next(i);
2036	if ((item.flags & QDockAreaLayoutItem::GapItem)
2037	\|\| (next != -1 && (item_list.at(next).flags & QDockAreaLayoutItem::GapItem)))
2038	continue;
2039
2040	if (item.subinfo) {
2041	item.subinfo->updateSeparatorWidgets();
2042	}
2043
2044	if (next == -1)
2045	break;
2046
2047	QWidget *sepWidget;
2048	if (j < separatorWidgets.size() && separatorWidgets.at(j)) {
2049	sepWidget = separatorWidgets.at(j);
2050	} else {
2051	sepWidget = mainWindowLayout()->getSeparatorWidget();
2052	separatorWidgets.append(sepWidget);
2053	}
2054	j++;
2055
2056	#ifndef QT_MAC_USE_COCOA
2057	sepWidget->raise();
2058	#endif
2059	QRect sepRect = separatorRect(i).adjusted(-2, -2, 2, 2);
2060	sepWidget->setGeometry(sepRect);
2061	sepWidget->setMask( QRegion(separatorRect(i).translated( - sepRect.topLeft())));
2062	sepWidget->show();
2063	}
2064
2065	for (int k = j; k < separatorWidgets.size(); ++k) {
2066	separatorWidgets[k]->hide();
2067	}
2068	separatorWidgets.resize(j);
2069	Q_ASSERT(separatorWidgets.size() == j);
2070	}
2071	#endif //QT_NO_TABBAR
2072
2073	#ifndef QT_NO_TABBAR
2074	void QDockAreaLayoutInfo::updateTabBar() const
2075	{
2076	if (!tabbed)
2077	return;
2078
2079	QDockAreaLayoutInfo that = const_cast<QDockAreaLayoutInfo>(this);
2080
2081	if (that->tabBar == 0) {
2082	that->tabBar = mainWindowLayout()->getTabBar();
2083	that->tabBar->setShape(static_cast<QTabBar::Shape>(tabBarShape));
2084	that->tabBar->setDrawBase(true);
2085	}
2086
2087	bool blocked = tabBar->blockSignals(true);
2088	bool gap = false;
2089
2090	int tab_idx = 0;
2091	bool changed = false;
2092	for (int i = 0; i < item_list.count(); ++i) {
2093	const QDockAreaLayoutItem &item = item_list.at(i);
2094	if (item.skip())
2095	continue;
2096	if (item.flags & QDockAreaLayoutItem::GapItem) {
2097	gap = true;
2098	continue;
2099	}
2100	if (item.widgetItem == 0)
2101	continue;
2102
2103	QDockWidget dw = qobject_cast<QDockWidget>(item.widgetItem->widget());
2104	QString title = dw->d_func()->fixedWindowTitle;
2105	quintptr id = tabId(item);
2106	if (tab_idx == tabBar->count()) {
2107	tabBar->insertTab(tab_idx, title);
2108	#ifndef QT_NO_TOOLTIP
2109	tabBar->setTabToolTip(tab_idx, title);
2110	#endif
2111	tabBar->setTabData(tab_idx, id);
2112	changed = true;
2113	} else if (qvariant_cast<quintptr>(tabBar->tabData(tab_idx)) != id) {
2114	if (tab_idx + 1 < tabBar->count()
2115	&& qvariant_cast<quintptr>(tabBar->tabData(tab_idx + 1)) == id)
2116	tabBar->removeTab(tab_idx);
2117	else {
2118	tabBar->insertTab(tab_idx, title);
2119	#ifndef QT_NO_TOOLTIP
2120	tabBar->setTabToolTip(tab_idx, title);
2121	#endif
2122	tabBar->setTabData(tab_idx, id);
2123	}
2124	changed = true;
2125	}
2126
2127	if (title != tabBar->tabText(tab_idx)) {
2128	tabBar->setTabText(tab_idx, title);
2129	#ifndef QT_NO_TOOLTIP
2130	tabBar->setTabToolTip(tab_idx, title);
2131	#endif
2132	changed = true;
2133	}
2134
2135	++tab_idx;
2136	}
2137
2138	while (tab_idx < tabBar->count()) {
2139	tabBar->removeTab(tab_idx);
2140	changed = true;
2141	}
2142
2143	tabBar->blockSignals(blocked);
2144
2145	that->tabBarVisible = ( (gap ? 1 : 0) + tabBar->count()) > 1;
2146
2147	if (changed \|\| !tabBarMin.isValid() \| !tabBarHint.isValid()) {
2148	that->tabBarMin = tabBar->minimumSizeHint();
2149	that->tabBarHint = tabBar->sizeHint();
2150	}
2151	}
2152
2153	void QDockAreaLayoutInfo::setTabBarShape(int shape)
2154	{
2155	if (shape == tabBarShape)
2156	return;
2157	tabBarShape = shape;
2158	if (tabBar != 0) {
2159	tabBar->setShape(static_cast<QTabBar::Shape>(shape));
2160	tabBarMin = QSize();
2161	tabBarHint = QSize();
2162	}
2163
2164	for (int i = 0; i < item_list.count(); ++i) {
2165	QDockAreaLayoutItem &item = item_list[i];
2166	if (item.subinfo != 0)
2167	item.subinfo->setTabBarShape(shape);
2168	}
2169	}
2170
2171	QSize QDockAreaLayoutInfo::tabBarMinimumSize() const
2172	{
2173	if (!tabbed)
2174	return QSize(0, 0);
2175
2176	updateTabBar();
2177
2178	return tabBarMin;
2179	}
2180
2181	QSize QDockAreaLayoutInfo::tabBarSizeHint() const
2182	{
2183	if (!tabbed)
2184	return QSize(0, 0);
2185
2186	updateTabBar();
2187
2188	return tabBarHint;
2189	}
2190
2191	QSet<QTabBar*> QDockAreaLayoutInfo::usedTabBars() const
2192	{
2193	QSet<QTabBar*> result;
2194
2195	if (tabbed) {
2196	updateTabBar();
2197	result.insert(tabBar);
2198	}
2199
2200	for (int i = 0; i < item_list.count(); ++i) {
2201	const QDockAreaLayoutItem &item = item_list.at(i);
2202	if (item.subinfo != 0)
2203	result += item.subinfo->usedTabBars();
2204	}
2205
2206	return result;
2207	}
2208
2209	// returns a set of all used separator widgets for this dockarelayout info
2210	// and all subinfos
2211	QSet<QWidget*> QDockAreaLayoutInfo::usedSeparatorWidgets() const
2212	{
2213	QSet<QWidget*> result;
2214
2215	for (int i = 0; i < separatorWidgets.count(); ++i)
2216	result << separatorWidgets.at(i);
2217
2218	for (int i = 0; i < item_list.count(); ++i) {
2219	const QDockAreaLayoutItem &item = item_list.at(i);
2220	if (item.subinfo != 0)
2221	result += item.subinfo->usedSeparatorWidgets();
2222	}
2223
2224	return result;
2225	}
2226
2227	QRect QDockAreaLayoutInfo::tabContentRect() const
2228	{
2229	if (!tabbed)
2230	return QRect();
2231
2232	QRect result = rect;
2233	QSize tbh = tabBarSizeHint();
2234
2235	if (tabBarVisible) {
2236	switch (tabBarShape) {
2237	case QTabBar::RoundedNorth:
2238	case QTabBar::TriangularNorth:
2239	result.adjust(0, tbh.height(), 0, 0);
2240	break;
2241	case QTabBar::RoundedSouth:
2242	case QTabBar::TriangularSouth:
2243	result.adjust(0, 0, 0, -tbh.height());
2244	break;
2245	case QTabBar::RoundedEast:
2246	case QTabBar::TriangularEast:
2247	result.adjust(0, 0, -tbh.width(), 0);
2248	break;
2249	case QTabBar::RoundedWest:
2250	case QTabBar::TriangularWest:
2251	result.adjust(tbh.width(), 0, 0, 0);
2252	break;
2253	default:
2254	break;
2255	}
2256	}
2257
2258	return result;
2259	}
2260	#endif // QT_NO_TABBAR
2261
2262	/******************************************************************************
2263	** QDockAreaLayout
2264	*/
2265
2266	QDockAreaLayout::QDockAreaLayout(QMainWindow *win) : fallbackToSizeHints(true)
2267	{
2268	mainWindow = win;
2269	sep = win->style()->pixelMetric(QStyle::PM_DockWidgetSeparatorExtent, 0, win);
2270	#ifndef QT_NO_TABBAR
2271	const int tabShape = QTabBar::RoundedSouth;
2272	#else
2273	const int tabShape = 0;
2274	#endif
2275	docks[QInternal::LeftDock]
2276	= QDockAreaLayoutInfo(sep, QInternal::LeftDock, Qt::Vertical, tabShape, win);
2277	docks[QInternal::RightDock]
2278	= QDockAreaLayoutInfo(sep, QInternal::RightDock, Qt::Vertical, tabShape, win);
2279	docks[QInternal::TopDock]
2280	= QDockAreaLayoutInfo(sep, QInternal::TopDock, Qt::Horizontal, tabShape, win);
2281	docks[QInternal::BottomDock]
2282	= QDockAreaLayoutInfo(sep, QInternal::BottomDock, Qt::Horizontal, tabShape, win);
2283	centralWidgetItem = 0;
2284
2285
2286	corners[Qt::TopLeftCorner] = Qt::TopDockWidgetArea;
2287	corners[Qt::TopRightCorner] = Qt::TopDockWidgetArea;
2288	corners[Qt::BottomLeftCorner] = Qt::BottomDockWidgetArea;
2289	corners[Qt::BottomRightCorner] = Qt::BottomDockWidgetArea;
2290	}
2291
2292	bool QDockAreaLayout::isValid() const
2293	{
2294	return rect.isValid();
2295	}
2296
2297	void QDockAreaLayout::saveState(QDataStream &stream) const
2298	{
2299	stream << (uchar) DockWidgetStateMarker;
2300	int cnt = 0;
2301	for (int i = 0; i < QInternal::DockCount; ++i) {
2302	if (!docks[i].item_list.isEmpty())
2303	++cnt;
2304	}
2305	stream << cnt;
2306	for (int i = 0; i < QInternal::DockCount; ++i) {
2307	if (docks[i].item_list.isEmpty())
2308	continue;
2309	stream << i << docks[i].rect.size();
2310	docks[i].saveState(stream);
2311	}
2312
2313	stream << centralWidgetRect.size();
2314
2315	for (int i = 0; i < 4; ++i)
2316	stream << static_cast<int>(corners[i]);
2317	}
2318
2319	bool QDockAreaLayout::restoreState(QDataStream &stream, const QList<QDockWidget*> &_dockwidgets, bool testing)
2320	{
2321	QList<QDockWidget*> dockwidgets = _dockwidgets;
2322
2323	int cnt;
2324	stream >> cnt;
2325	for (int i = 0; i < cnt; ++i) {
2326	int pos;
2327	stream >> pos;
2328	QSize size;
2329	stream >> size;
2330	if (!testing) {
2331	docks[pos].rect = QRect(QPoint(0, 0), size);
2332	}
2333	if (!docks[pos].restoreState(stream, dockwidgets, testing)) {
2334	stream.setStatus(QDataStream::ReadCorruptData);
2335	return false;
2336	}
2337	}
2338
2339	QSize size;
2340	stream >> size;
2341	centralWidgetRect = QRect(QPoint(0, 0), size);
2342
2343	bool ok = stream.status() == QDataStream::Ok;
2344
2345	if (ok) {
2346	int cornerData[4];
2347	for (int i = 0; i < 4; ++i)
2348	stream >> cornerData[i];
2349	if (stream.status() == QDataStream::Ok) {
2350	for (int i = 0; i < 4; ++i)
2351	corners[i] = static_cast<Qt::DockWidgetArea>(cornerData[i]);
2352	}
2353
2354	if (!testing)
2355	fallbackToSizeHints = false;
2356	}
2357
2358	return ok;
2359	}
2360
2361	QList<int> QDockAreaLayout::indexOfPlaceHolder(const QString &objectName) const
2362	{
2363	for (int i = 0; i < QInternal::DockCount; ++i) {
2364	QList<int> result = docks[i].indexOfPlaceHolder(objectName);
2365	if (!result.isEmpty()) {
2366	result.prepend(i);
2367	return result;
2368	}
2369	}
2370	return QList<int>();
2371	}
2372
2373	QList<int> QDockAreaLayout::indexOf(QWidget *dockWidget) const
2374	{
2375	for (int i = 0; i < QInternal::DockCount; ++i) {
2376	QList<int> result = docks[i].indexOf(dockWidget);
2377	if (!result.isEmpty()) {
2378	result.prepend(i);
2379	return result;
2380	}
2381	}
2382	return QList<int>();
2383	}
2384
2385	QList<int> QDockAreaLayout::gapIndex(const QPoint &pos) const
2386	{
2387	QMainWindow::DockOptions opts = mainWindow->dockOptions();
2388	bool nestingEnabled = opts & QMainWindow::AllowNestedDocks;
2389	QDockAreaLayoutInfo::TabMode tabMode = QDockAreaLayoutInfo::NoTabs;
2390	#ifndef QT_NO_TABBAR
2391	if (opts & QMainWindow::AllowTabbedDocks
2392	\|\| opts & QMainWindow::VerticalTabs)
2393	tabMode = QDockAreaLayoutInfo::AllowTabs;
2394	if (opts & QMainWindow::ForceTabbedDocks)
2395	tabMode = QDockAreaLayoutInfo::ForceTabs;
2396
2397	if (tabMode == QDockAreaLayoutInfo::ForceTabs)
2398	nestingEnabled = false;
2399	#endif
2400
2401
2402	for (int i = 0; i < QInternal::DockCount; ++i) {
2403	const QDockAreaLayoutInfo &info = docks[i];
2404
2405	if (!info.isEmpty() && info.rect.contains(pos)) {
2406	QList<int> result
2407	= docks[i].gapIndex(pos, nestingEnabled, tabMode);
2408	if (!result.isEmpty())
2409	result.prepend(i);
2410	return result;
2411	}
2412	}
2413
2414	for (int i = 0; i < QInternal::DockCount; ++i) {
2415	const QDockAreaLayoutInfo &info = docks[i];
2416
2417	if (info.isEmpty()) {
2418	QRect r;
2419	switch (i) {
2420	case QInternal::LeftDock:
2421	r = QRect(rect.left(), rect.top(), EmptyDropAreaSize, rect.height());
2422	break;
2423	case QInternal::RightDock:
2424	r = QRect(rect.right() - EmptyDropAreaSize, rect.top(),
2425	EmptyDropAreaSize, rect.height());
2426	break;
2427	case QInternal::TopDock:
2428	r = QRect(rect.left(), rect.top(), rect.width(), EmptyDropAreaSize);
2429	break;
2430	case QInternal::BottomDock:
2431	r = QRect(rect.left(), rect.bottom() - EmptyDropAreaSize,
2432	rect.width(), EmptyDropAreaSize);
2433	break;
2434	}
2435	if (r.contains(pos)) {
2436	if (opts & QMainWindow::ForceTabbedDocks && !info.item_list.isEmpty()) {
2437	//in case of ForceTabbedDocks, we pass -1 in order to force the gap to be tabbed
2438	//it mustn't be completely empty otherwise it won't work
2439	return QList<int>() << i << -1 << 0;
2440	} else {
2441	return QList<int>() << i << 0;
2442	}
2443	}
2444	}
2445	}
2446
2447	return QList<int>();
2448	}
2449
2450	QList<int> QDockAreaLayout::findSeparator(const QPoint &pos) const
2451	{
2452	QList<int> result;
2453	for (int i = 0; i < QInternal::DockCount; ++i) {
2454	const QDockAreaLayoutInfo &info = docks[i];
2455	if (info.isEmpty())
2456	continue;
2457	QRect rect = separatorRect(i);
2458	if (!rect.isNull() && sep == 1)
2459	rect.adjust(-2, -2, 2, 2);
2460	if (rect.contains(pos) && !info.hasFixedSize()) {
2461	result << i;
2462	break;
2463	} else if (info.rect.contains(pos)) {
2464	result = docks[i].findSeparator(pos);
2465	if (!result.isEmpty()) {
2466	result.prepend(i);
2467	break;
2468	}
2469	}
2470	}
2471
2472	return result;
2473	}
2474
2475	QDockAreaLayoutInfo QDockAreaLayout::info(QWidget widget)
2476	{
2477	for (int i = 0; i < QInternal::DockCount; ++i) {
2478	if (QDockAreaLayoutInfo *result = docks[i].info(widget))
2479	return result;
2480	}
2481
2482	return 0;
2483	}
2484
2485	QDockAreaLayoutInfo *QDockAreaLayout::info(const QList<int> &path)
2486	{
2487	Q_ASSERT(!path.isEmpty());
2488	const int index = path.first();
2489	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2490
2491	if (path.count() == 1)
2492	return &docks[index];
2493
2494	return docks[index].info(path.mid(1));
2495	}
2496
2497	const QDockAreaLayoutInfo *QDockAreaLayout::info(const QList<int> &path) const
2498	{
2499	return const_cast<QDockAreaLayout*>(this)->info(path);
2500	}
2501
2502	QDockAreaLayoutItem &QDockAreaLayout::item(const QList<int> &path)
2503	{
2504	Q_ASSERT(!path.isEmpty());
2505	const int index = path.first();
2506	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2507	return docks[index].item(path.mid(1));
2508	}
2509
2510	QRect QDockAreaLayout::itemRect(const QList<int> &path) const
2511	{
2512	Q_ASSERT(!path.isEmpty());
2513	const int index = path.first();
2514	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2515	return docks[index].itemRect(path.mid(1));
2516	}
2517
2518	QRect QDockAreaLayout::separatorRect(int index) const
2519	{
2520	const QDockAreaLayoutInfo &dock = docks[index];
2521	if (dock.isEmpty())
2522	return QRect();
2523	QRect r = dock.rect;
2524	switch (index) {
2525	case QInternal::LeftDock:
2526	return QRect(r.right() + 1, r.top(), sep, r.height());
2527	case QInternal::RightDock:
2528	return QRect(r.left() - sep, r.top(), sep, r.height());
2529	case QInternal::TopDock:
2530	return QRect(r.left(), r.bottom() + 1, r.width(), sep);
2531	case QInternal::BottomDock:
2532	return QRect(r.left(), r.top() - sep, r.width(), sep);
2533	default:
2534	break;
2535	}
2536	return QRect();
2537	}
2538
2539	QRect QDockAreaLayout::separatorRect(const QList<int> &path) const
2540	{
2541	Q_ASSERT(!path.isEmpty());
2542
2543	const int index = path.first();
2544	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2545
2546	if (path.count() == 1)
2547	return separatorRect(index);
2548	else
2549	return docks[index].separatorRect(path.mid(1));
2550	}
2551
2552	bool QDockAreaLayout::insertGap(const QList<int> &path, QLayoutItem *dockWidgetItem)
2553	{
2554	Q_ASSERT(!path.isEmpty());
2555	const int index = path.first();
2556	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2557	return docks[index].insertGap(path.mid(1), dockWidgetItem);
2558	}
2559
2560	QLayoutItem *QDockAreaLayout::plug(const QList<int> &path)
2561	{
2562	Q_ASSERT(!path.isEmpty());
2563	const int index = path.first();
2564	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2565	return docks[index].plug(path.mid(1));
2566	}
2567
2568	QLayoutItem *QDockAreaLayout::unplug(const QList<int> &path)
2569	{
2570	Q_ASSERT(!path.isEmpty());
2571	const int index = path.first();
2572	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2573	return docks[index].unplug(path.mid(1));
2574	}
2575
2576	void QDockAreaLayout::remove(const QList<int> &path)
2577	{
2578	Q_ASSERT(!path.isEmpty());
2579	const int index = path.first();
2580	Q_ASSERT(index >= 0 && index < QInternal::DockCount);
2581	docks[index].remove(path.mid(1));
2582	}
2583
2584	static inline int qMin(int i1, int i2, int i3) { return qMin(i1, qMin(i2, i3)); }
2585	static inline int qMax(int i1, int i2, int i3) { return qMax(i1, qMax(i2, i3)); }
2586
2587	void QDockAreaLayout::getGrid(QVector<QLayoutStruct> *_ver_struct_list,
2588	QVector<QLayoutStruct> *_hor_struct_list)
2589	{
2590	QSize center_hint(0, 0);
2591	QSize center_min(0, 0);
2592	const bool have_central = centralWidgetItem != 0 && !centralWidgetItem->isEmpty();
2593	if (have_central) {
2594	center_hint = centralWidgetRect.size();
2595	if (!center_hint.isValid())
2596	center_hint = centralWidgetItem->sizeHint();
2597	center_min = centralWidgetItem->minimumSize();
2598	}
2599
2600	QRect center_rect = rect;
2601	if (!docks[QInternal::LeftDock].isEmpty())
2602	center_rect.setLeft(rect.left() + docks[QInternal::LeftDock].rect.width() + sep);
2603	if (!docks[QInternal::TopDock].isEmpty())
2604	center_rect.setTop(rect.top() + docks[QInternal::TopDock].rect.height() + sep);
2605	if (!docks[QInternal::RightDock].isEmpty())
2606	center_rect.setRight(rect.right() - docks[QInternal::RightDock].rect.width() - sep);
2607	if (!docks[QInternal::BottomDock].isEmpty())
2608	center_rect.setBottom(rect.bottom() - docks[QInternal::BottomDock].rect.height() - sep);
2609
2610	QSize left_hint = docks[QInternal::LeftDock].size();
2611	if (left_hint.isNull() \|\| fallbackToSizeHints)
2612	left_hint = docks[QInternal::LeftDock].sizeHint();
2613	QSize left_min = docks[QInternal::LeftDock].minimumSize();
2614	QSize left_max = docks[QInternal::LeftDock].maximumSize();
2615	left_hint = left_hint.boundedTo(left_max).expandedTo(left_min);
2616
2617	QSize right_hint = docks[QInternal::RightDock].size();
2618	if (right_hint.isNull() \|\| fallbackToSizeHints)
2619	right_hint = docks[QInternal::RightDock].sizeHint();
2620	QSize right_min = docks[QInternal::RightDock].minimumSize();
2621	QSize right_max = docks[QInternal::RightDock].maximumSize();
2622	right_hint = right_hint.boundedTo(right_max).expandedTo(right_min);
2623
2624	QSize top_hint = docks[QInternal::TopDock].size();
2625	if (top_hint.isNull() \|\| fallbackToSizeHints)
2626	top_hint = docks[QInternal::TopDock].sizeHint();
2627	QSize top_min = docks[QInternal::TopDock].minimumSize();
2628	QSize top_max = docks[QInternal::TopDock].maximumSize();
2629	top_hint = top_hint.boundedTo(top_max).expandedTo(top_min);
2630
2631	QSize bottom_hint = docks[QInternal::BottomDock].size();
2632	if (bottom_hint.isNull() \|\| fallbackToSizeHints)
2633	bottom_hint = docks[QInternal::BottomDock].sizeHint();
2634	QSize bottom_min = docks[QInternal::BottomDock].minimumSize();
2635	QSize bottom_max = docks[QInternal::BottomDock].maximumSize();
2636	bottom_hint = bottom_hint.boundedTo(bottom_max).expandedTo(bottom_min);
2637
2638	fallbackToSizeHints = !have_central;
2639
2640	if (_ver_struct_list != 0) {
2641	QVector<QLayoutStruct> &ver_struct_list = *_ver_struct_list;
2642	ver_struct_list.resize(3);
2643
2644	// top --------------------------------------------------
2645	ver_struct_list[0].init();
2646	ver_struct_list[0].stretch = 0;
2647	ver_struct_list[0].sizeHint = top_hint.height();
2648	ver_struct_list[0].minimumSize = top_min.height();
2649	ver_struct_list[0].maximumSize = top_max.height();
2650	ver_struct_list[0].expansive = false;
2651	ver_struct_list[0].empty = docks[QInternal::TopDock].isEmpty();
2652	ver_struct_list[0].pos = docks[QInternal::TopDock].rect.top();
2653	ver_struct_list[0].size = docks[QInternal::TopDock].rect.height();
2654
2655	// center --------------------------------------------------
2656	ver_struct_list[1].init();
2657	ver_struct_list[1].stretch = center_hint.height();
2658
2659	bool tl_significant = corners[Qt::TopLeftCorner] == Qt::TopDockWidgetArea
2660	\|\| docks[QInternal::TopDock].isEmpty();
2661	bool bl_significant = corners[Qt::BottomLeftCorner] == Qt::BottomDockWidgetArea
2662	\|\| docks[QInternal::BottomDock].isEmpty();
2663	bool tr_significant = corners[Qt::TopRightCorner] == Qt::TopDockWidgetArea
2664	\|\| docks[QInternal::TopDock].isEmpty();
2665	bool br_significant = corners[Qt::BottomRightCorner] == Qt::BottomDockWidgetArea
2666	\|\| docks[QInternal::BottomDock].isEmpty();
2667
2668	int left = (tl_significant && bl_significant) ? left_hint.height() : 0;
2669	int right = (tr_significant && br_significant) ? right_hint.height() : 0;
2670	ver_struct_list[1].sizeHint = qMax(left, center_hint.height(), right);
2671
2672	left = (tl_significant && bl_significant) ? left_min.height() : 0;
2673	right = (tr_significant && br_significant) ? right_min.height() : 0;
2674	ver_struct_list[1].minimumSize = qMax(left, center_min.height(), right);
2675	ver_struct_list[1].maximumSize = have_central ? QWIDGETSIZE_MAX : 0;
2676	ver_struct_list[1].expansive = have_central;
2677	ver_struct_list[1].empty = docks[QInternal::LeftDock].isEmpty()
2678	&& !have_central
2679	&& docks[QInternal::RightDock].isEmpty();
2680	ver_struct_list[1].pos = center_rect.top();
2681	ver_struct_list[1].size = center_rect.height();
2682
2683	// bottom --------------------------------------------------
2684	ver_struct_list[2].init();
2685	ver_struct_list[2].stretch = 0;
2686	ver_struct_list[2].sizeHint = bottom_hint.height();
2687	ver_struct_list[2].minimumSize = bottom_min.height();
2688	ver_struct_list[2].maximumSize = bottom_max.height();
2689	ver_struct_list[2].expansive = false;
2690	ver_struct_list[2].empty = docks[QInternal::BottomDock].isEmpty();
2691	ver_struct_list[2].pos = docks[QInternal::BottomDock].rect.top();
2692	ver_struct_list[2].size = docks[QInternal::BottomDock].rect.height();
2693
2694	for (int i = 0; i < 3; ++i) {
2695	ver_struct_list[i].sizeHint
2696	= qMax(ver_struct_list[i].sizeHint, ver_struct_list[i].minimumSize);
2697	}
2698	}
2699
2700	if (_hor_struct_list != 0) {
2701	QVector<QLayoutStruct> &hor_struct_list = *_hor_struct_list;
2702	hor_struct_list.resize(3);
2703
2704	// left --------------------------------------------------
2705	hor_struct_list[0].init();
2706	hor_struct_list[0].stretch = 0;
2707	hor_struct_list[0].sizeHint = left_hint.width();
2708	hor_struct_list[0].minimumSize = left_min.width();
2709	hor_struct_list[0].maximumSize = left_max.width();
2710	hor_struct_list[0].expansive = false;
2711	hor_struct_list[0].empty = docks[QInternal::LeftDock].isEmpty();
2712	hor_struct_list[0].pos = docks[QInternal::LeftDock].rect.left();
2713	hor_struct_list[0].size = docks[QInternal::LeftDock].rect.width();
2714
2715	// center --------------------------------------------------
2716	hor_struct_list[1].init();
2717	hor_struct_list[1].stretch = center_hint.width();
2718
2719	bool tl_significant = corners[Qt::TopLeftCorner] == Qt::LeftDockWidgetArea
2720	\|\| docks[QInternal::LeftDock].isEmpty();
2721	bool tr_significant = corners[Qt::TopRightCorner] == Qt::RightDockWidgetArea
2722	\|\| docks[QInternal::RightDock].isEmpty();
2723	bool bl_significant = corners[Qt::BottomLeftCorner] == Qt::LeftDockWidgetArea
2724	\|\| docks[QInternal::LeftDock].isEmpty();
2725	bool br_significant = corners[Qt::BottomRightCorner] == Qt::RightDockWidgetArea
2726	\|\| docks[QInternal::RightDock].isEmpty();
2727
2728	int top = (tl_significant && tr_significant) ? top_hint.width() : 0;
2729	int bottom = (bl_significant && br_significant) ? bottom_hint.width() : 0;
2730	hor_struct_list[1].sizeHint = qMax(top, center_hint.width(), bottom);
2731
2732	top = (tl_significant && tr_significant) ? top_min.width() : 0;
2733	bottom = (bl_significant && br_significant) ? bottom_min.width() : 0;
2734	hor_struct_list[1].minimumSize = qMax(top, center_min.width(), bottom);
2735
2736	hor_struct_list[1].maximumSize = have_central ? QWIDGETSIZE_MAX : 0;
2737	hor_struct_list[1].expansive = have_central;
2738	hor_struct_list[1].empty = !have_central;
2739	hor_struct_list[1].pos = center_rect.left();
2740	hor_struct_list[1].size = center_rect.width();
2741
2742	// right --------------------------------------------------
2743	hor_struct_list[2].init();
2744	hor_struct_list[2].stretch = 0;
2745	hor_struct_list[2].sizeHint = right_hint.width();
2746	hor_struct_list[2].minimumSize = right_min.width();
2747	hor_struct_list[2].maximumSize = right_max.width();
2748	hor_struct_list[2].expansive = false;
2749	hor_struct_list[2].empty = docks[QInternal::RightDock].isEmpty();
2750	hor_struct_list[2].pos = docks[QInternal::RightDock].rect.left();
2751	hor_struct_list[2].size = docks[QInternal::RightDock].rect.width();
2752
2753	for (int i = 0; i < 3; ++i) {
2754	hor_struct_list[i].sizeHint
2755	= qMax(hor_struct_list[i].sizeHint, hor_struct_list[i].minimumSize);
2756	}
2757	}
2758	}
2759
2760	void QDockAreaLayout::setGrid(QVector<QLayoutStruct> *ver_struct_list,
2761	QVector<QLayoutStruct> *hor_struct_list)
2762	{
2763
2764	// top ---------------------------------------------------
2765
2766	if (!docks[QInternal::TopDock].isEmpty()) {
2767	QRect r = docks[QInternal::TopDock].rect;
2768	if (hor_struct_list != 0) {
2769	r.setLeft(corners[Qt::TopLeftCorner] == Qt::TopDockWidgetArea
2770	\|\| docks[QInternal::LeftDock].isEmpty()
2771	? rect.left() : hor_struct_list->at(1).pos);
2772	r.setRight(corners[Qt::TopRightCorner] == Qt::TopDockWidgetArea
2773	\|\| docks[QInternal::RightDock].isEmpty()
2774	? rect.right() : hor_struct_list->at(2).pos - sep - 1);
2775	}
2776	if (ver_struct_list != 0) {
2777	r.setTop(rect.top());
2778	r.setBottom(ver_struct_list->at(1).pos - sep - 1);
2779	}
2780	docks[QInternal::TopDock].rect = r;
2781	docks[QInternal::TopDock].fitItems();
2782	}
2783
2784	// bottom ---------------------------------------------------
2785
2786	if (!docks[QInternal::BottomDock].isEmpty()) {
2787	QRect r = docks[QInternal::BottomDock].rect;
2788	if (hor_struct_list != 0) {
2789	r.setLeft(corners[Qt::BottomLeftCorner] == Qt::BottomDockWidgetArea
2790	\|\| docks[QInternal::LeftDock].isEmpty()
2791	? rect.left() : hor_struct_list->at(1).pos);
2792	r.setRight(corners[Qt::BottomRightCorner] == Qt::BottomDockWidgetArea
2793	\|\| docks[QInternal::RightDock].isEmpty()
2794	? rect.right() : hor_struct_list->at(2).pos - sep - 1);
2795	}
2796	if (ver_struct_list != 0) {
2797	r.setTop(ver_struct_list->at(2).pos);
2798	r.setBottom(rect.bottom());
2799	}
2800	docks[QInternal::BottomDock].rect = r;
2801	docks[QInternal::BottomDock].fitItems();
2802	}
2803
2804	// left ---------------------------------------------------
2805
2806	if (!docks[QInternal::LeftDock].isEmpty()) {
2807	QRect r = docks[QInternal::LeftDock].rect;
2808	if (hor_struct_list != 0) {
2809	r.setLeft(rect.left());
2810	r.setRight(hor_struct_list->at(1).pos - sep - 1);
2811	}
2812	if (ver_struct_list != 0) {
2813	r.setTop(corners[Qt::TopLeftCorner] == Qt::LeftDockWidgetArea
2814	\|\| docks[QInternal::TopDock].isEmpty()
2815	? rect.top() : ver_struct_list->at(1).pos);
2816	r.setBottom(corners[Qt::BottomLeftCorner] == Qt::LeftDockWidgetArea
2817	\|\| docks[QInternal::BottomDock].isEmpty()
2818	? rect.bottom() : ver_struct_list->at(2).pos - sep - 1);
2819	}
2820	docks[QInternal::LeftDock].rect = r;
2821	docks[QInternal::LeftDock].fitItems();
2822	}
2823
2824	// right ---------------------------------------------------
2825
2826	if (!docks[QInternal::RightDock].isEmpty()) {
2827	QRect r = docks[QInternal::RightDock].rect;
2828	if (hor_struct_list != 0) {
2829	r.setLeft(hor_struct_list->at(2).pos);
2830	r.setRight(rect.right());
2831	}
2832	if (ver_struct_list != 0) {
2833	r.setTop(corners[Qt::TopRightCorner] == Qt::RightDockWidgetArea
2834	\|\| docks[QInternal::TopDock].isEmpty()
2835	? rect.top() : ver_struct_list->at(1).pos);
2836	r.setBottom(corners[Qt::BottomRightCorner] == Qt::RightDockWidgetArea
2837	\|\| docks[QInternal::BottomDock].isEmpty()
2838	? rect.bottom() : ver_struct_list->at(2).pos - sep - 1);
2839	}
2840	docks[QInternal::RightDock].rect = r;
2841	docks[QInternal::RightDock].fitItems();
2842	}
2843
2844	// center ---------------------------------------------------
2845
2846	if (hor_struct_list != 0) {
2847	centralWidgetRect.setLeft(hor_struct_list->at(1).pos);
2848	centralWidgetRect.setWidth(hor_struct_list->at(1).size);
2849	}
2850	if (ver_struct_list != 0) {
2851	centralWidgetRect.setTop(ver_struct_list->at(1).pos);
2852	centralWidgetRect.setHeight(ver_struct_list->at(1).size);
2853	}
2854	}
2855
2856	void QDockAreaLayout::fitLayout()
2857	{
2858	QVector<QLayoutStruct> ver_struct_list(3);
2859	QVector<QLayoutStruct> hor_struct_list(3);
2860	getGrid(&ver_struct_list, &hor_struct_list);
2861
2862	qGeomCalc(ver_struct_list, 0, 3, rect.top(), rect.height(), sep);
2863	qGeomCalc(hor_struct_list, 0, 3, rect.left(), rect.width(), sep);
2864
2865	setGrid(&ver_struct_list, &hor_struct_list);
2866	}
2867
2868	void QDockAreaLayout::clear()
2869	{
2870	for (int i = 0; i < QInternal::DockCount; ++i)
2871	docks[i].clear();
2872
2873	rect = QRect();
2874	centralWidgetRect = QRect();
2875	}
2876
2877	QSize QDockAreaLayout::sizeHint() const
2878	{
2879	int left_sep = 0;
2880	int right_sep = 0;
2881	int top_sep = 0;
2882	int bottom_sep = 0;
2883
2884	if (centralWidgetItem != 0) {
2885	left_sep = docks[QInternal::LeftDock].isEmpty() ? 0 : sep;
2886	right_sep = docks[QInternal::RightDock].isEmpty() ? 0 : sep;
2887	top_sep = docks[QInternal::TopDock].isEmpty() ? 0 : sep;
2888	bottom_sep = docks[QInternal::BottomDock].isEmpty() ? 0 : sep;
2889	}
2890
2891	QSize left = docks[QInternal::LeftDock].sizeHint() + QSize(left_sep, 0);
2892	QSize right = docks[QInternal::RightDock].sizeHint() + QSize(right_sep, 0);
2893	QSize top = docks[QInternal::TopDock].sizeHint() + QSize(0, top_sep);
2894	QSize bottom = docks[QInternal::BottomDock].sizeHint() + QSize(0, bottom_sep);
2895	QSize center = centralWidgetItem == 0 ? QSize(0, 0) : centralWidgetItem->sizeHint();
2896
2897	int row1 = top.width();
2898	int row2 = left.width() + center.width() + right.width();
2899	int row3 = bottom.width();
2900	int col1 = left.height();
2901	int col2 = top.height() + center.height() + bottom.height();
2902	int col3 = right.height();
2903
2904	if (corners[Qt::TopLeftCorner] == Qt::LeftDockWidgetArea)
2905	row1 += left.width();
2906	else
2907	col1 += top.height();
2908
2909	if (corners[Qt::TopRightCorner] == Qt::RightDockWidgetArea)
2910	row1 += right.width();
2911	else
2912	col3 += top.height();
2913
2914	if (corners[Qt::BottomLeftCorner] == Qt::LeftDockWidgetArea)
2915	row3 += left.width();
2916	else
2917	col1 += bottom.height();
2918
2919	if (corners[Qt::BottomRightCorner] == Qt::RightDockWidgetArea)
2920	row3 += right.width();
2921	else
2922	col3 += bottom.height();
2923
2924	return QSize(qMax(row1, row2, row3), qMax(col1, col2, col3));
2925	}
2926
2927	QSize QDockAreaLayout::minimumSize() const
2928	{
2929	int left_sep = 0;
2930	int right_sep = 0;
2931	int top_sep = 0;
2932	int bottom_sep = 0;
2933
2934	if (centralWidgetItem != 0) {
2935	left_sep = docks[QInternal::LeftDock].isEmpty() ? 0 : sep;
2936	right_sep = docks[QInternal::RightDock].isEmpty() ? 0 : sep;
2937	top_sep = docks[QInternal::TopDock].isEmpty() ? 0 : sep;
2938	bottom_sep = docks[QInternal::BottomDock].isEmpty() ? 0 : sep;
2939	}
2940
2941	QSize left = docks[QInternal::LeftDock].minimumSize() + QSize(left_sep, 0);
2942	QSize right = docks[QInternal::RightDock].minimumSize() + QSize(right_sep, 0);
2943	QSize top = docks[QInternal::TopDock].minimumSize() + QSize(0, top_sep);
2944	QSize bottom = docks[QInternal::BottomDock].minimumSize() + QSize(0, bottom_sep);
2945	QSize center = centralWidgetItem == 0 ? QSize(0, 0) : centralWidgetItem->minimumSize();
2946
2947	int row1 = top.width();
2948	int row2 = left.width() + center.width() + right.width();
2949	int row3 = bottom.width();
2950	int col1 = left.height();
2951	int col2 = top.height() + center.height() + bottom.height();
2952	int col3 = right.height();
2953
2954	if (corners[Qt::TopLeftCorner] == Qt::LeftDockWidgetArea)
2955	row1 += left.width();
2956	else
2957	col1 += top.height();
2958
2959	if (corners[Qt::TopRightCorner] == Qt::RightDockWidgetArea)
2960	row1 += right.width();
2961	else
2962	col3 += top.height();
2963
2964	if (corners[Qt::BottomLeftCorner] == Qt::LeftDockWidgetArea)
2965	row3 += left.width();
2966	else
2967	col1 += bottom.height();
2968
2969	if (corners[Qt::BottomRightCorner] == Qt::RightDockWidgetArea)
2970	row3 += right.width();
2971	else
2972	col3 += bottom.height();
2973
2974	return QSize(qMax(row1, row2, row3), qMax(col1, col2, col3));
2975	}
2976
2977	bool QDockAreaLayout::restoreDockWidget(QDockWidget *dockWidget)
2978	{
2979	QList<int> index = indexOfPlaceHolder(dockWidget->objectName());
2980	if (index.isEmpty())
2981	return false;
2982
2983	QDockAreaLayoutItem &item = this->item(index);
2984	QPlaceHolderItem *placeHolder = item.placeHolderItem;
2985	Q_ASSERT(placeHolder != 0);
2986
2987	item.widgetItem = new QDockWidgetItem(dockWidget);
2988
2989	if (placeHolder->window) {
2990	QDesktopWidget desktop;
2991	QRect r = constrainedRect(placeHolder->topLevelRect, desktop.screenGeometry(dockWidget));
2992	dockWidget->d_func()->setWindowState(true, true, r);
2993	}
2994	dockWidget->show();
2995	// dockWidget->setVisible(!placeHolder->hidden);
2996	#ifdef Q_WS_X11
2997	if (placeHolder->window) // gets rid of the X11BypassWindowManager window flag
2998	dockWidget->d_func()->setWindowState(true);
2999	#endif
3000
3001	item.placeHolderItem = 0;
3002	delete placeHolder;
3003
3004	return true;
3005	}
3006
3007	void QDockAreaLayout::addDockWidget(QInternal::DockPosition pos, QDockWidget *dockWidget,
3008	Qt::Orientation orientation)
3009	{
3010	QLayoutItem *dockWidgetItem = new QDockWidgetItem(dockWidget);
3011	QDockAreaLayoutInfo &info = docks[pos];
3012	if (orientation == info.o \|\| info.item_list.count() <= 1) {
3013	// empty dock areas, or dock areas containing exactly one widget can have their orientation
3014	// switched.
3015	info.o = orientation;
3016
3017	QDockAreaLayoutItem new_item(dockWidgetItem);
3018	info.item_list.append(new_item);
3019	#ifndef QT_NO_TABBAR
3020	if (info.tabbed && !new_item.skip()) {
3021	info.updateTabBar();
3022	info.setCurrentTabId(tabId(new_item));
3023	}
3024	#endif
3025	} else {
3026	#ifndef QT_NO_TABBAR
3027	int tbshape = info.tabBarShape;
3028	#else
3029	int tbshape = 0;
3030	#endif
3031	QDockAreaLayoutInfo new_info(sep, pos, orientation, tbshape, mainWindow);
3032	new_info.item_list.append(new QDockAreaLayoutInfo(info));
3033	new_info.item_list.append(dockWidgetItem);
3034	info = new_info;
3035	}
3036
3037	QList<int> index = indexOfPlaceHolder(dockWidget->objectName());
3038	if (!index.isEmpty())
3039	remove(index);
3040	}
3041
3042	void QDockAreaLayout::tabifyDockWidget(QDockWidget first, QDockWidget second)
3043	{
3044	QList<int> path = indexOf(first);
3045	if (path.isEmpty())
3046	return;
3047
3048	QDockAreaLayoutInfo *info = this->info(path);
3049	Q_ASSERT(info != 0);
3050	info->tab(path.last(), new QDockWidgetItem(second));
3051
3052	QList<int> index = indexOfPlaceHolder(second->objectName());
3053	if (!index.isEmpty())
3054	remove(index);
3055	}
3056
3057	void QDockAreaLayout::splitDockWidget(QDockWidget *after,
3058	QDockWidget *dockWidget,
3059	Qt::Orientation orientation)
3060	{
3061	QList<int> path = indexOf(after);
3062	if (path.isEmpty())
3063	return;
3064
3065	QDockAreaLayoutInfo *info = this->info(path);
3066	Q_ASSERT(info != 0);
3067	info->split(path.last(), orientation, new QDockWidgetItem(dockWidget));
3068
3069	QList<int> index = indexOfPlaceHolder(dockWidget->objectName());
3070	if (!index.isEmpty())
3071	remove(index);
3072	}
3073
3074	void QDockAreaLayout::apply(bool animate)
3075	{
3076	QWidgetAnimator &widgetAnimator
3077	= qobject_cast<QMainWindowLayout*>(mainWindow->layout())->widgetAnimator;
3078
3079	for (int i = 0; i < QInternal::DockCount; ++i)
3080	docks[i].apply(animate);
3081	if (centralWidgetItem != 0 && !centralWidgetItem->isEmpty()) {
3082	widgetAnimator.animate(centralWidgetItem->widget(), centralWidgetRect,
3083	animate);
3084	}
3085	#ifndef QT_NO_TABBAR
3086	if (sep == 1)
3087	updateSeparatorWidgets();
3088	#endif //QT_NO_TABBAR
3089	}
3090
3091	void QDockAreaLayout::paintSeparators(QPainter p, QWidget widget,
3092	const QRegion &clip,
3093	const QPoint &mouse) const
3094	{
3095	for (int i = 0; i < QInternal::DockCount; ++i) {
3096	const QDockAreaLayoutInfo &dock = docks[i];
3097	if (dock.isEmpty())
3098	continue;
3099	QRect r = separatorRect(i);
3100	if (clip.contains(r) && !dock.hasFixedSize()) {
3101	Qt::Orientation opposite = dock.o == Qt::Horizontal
3102	? Qt::Vertical : Qt::Horizontal;
3103	paintSep(p, widget, r, opposite, r.contains(mouse));
3104	}
3105	if (clip.contains(dock.rect))
3106	dock.paintSeparators(p, widget, clip, mouse);
3107	}
3108	}
3109
3110	QRegion QDockAreaLayout::separatorRegion() const
3111	{
3112	QRegion result;
3113
3114	for (int i = 0; i < QInternal::DockCount; ++i) {
3115	const QDockAreaLayoutInfo &dock = docks[i];
3116	if (dock.isEmpty())
3117	continue;
3118	result \|= separatorRect(i);
3119	result \|= dock.separatorRegion();
3120	}
3121
3122	return result;
3123	}
3124
3125	int QDockAreaLayout::separatorMove(const QList<int> &separator, const QPoint &origin,
3126	const QPoint &dest)
3127	{
3128	int delta = 0;
3129	int index = separator.last();
3130
3131	if (separator.count() > 1) {
3132	QDockAreaLayoutInfo *info = this->info(separator);
3133	delta = pick(info->o, dest - origin);
3134	if (delta != 0)
3135	delta = info->separatorMove(index, delta);
3136	info->apply(false);
3137	return delta;
3138	}
3139
3140	QVector<QLayoutStruct> list;
3141
3142	if (index == QInternal::LeftDock \|\| index == QInternal::RightDock)
3143	getGrid(0, &list);
3144	else
3145	getGrid(&list, 0);
3146
3147	int sep_index = index == QInternal::LeftDock \|\| index == QInternal::TopDock
3148	? 0 : 1;
3149	Qt::Orientation o = index == QInternal::LeftDock \|\| index == QInternal::RightDock
3150	? Qt::Horizontal
3151	: Qt::Vertical;
3152
3153	delta = pick(o, dest - origin);
3154	delta = separatorMoveHelper(list, sep_index, delta, sep);
3155
3156	if (index == QInternal::LeftDock \|\| index == QInternal::RightDock)
3157	setGrid(0, &list);
3158	else
3159	setGrid(&list, 0);
3160
3161	apply(false);
3162
3163	return delta;
3164	}
3165
3166	#ifndef QT_NO_TABBAR
3167	// Sets the correct positions for the seperator widgets
3168	// Allocates new sepearator widgets with getSeparatorWidget
3169	void QDockAreaLayout::updateSeparatorWidgets() const
3170	{
3171	int j = 0;
3172
3173	for (int i = 0; i < QInternal::DockCount; ++i) {
3174	const QDockAreaLayoutInfo &dock = docks[i];
3175	if (dock.isEmpty())
3176	continue;
3177
3178	QWidget *sepWidget;
3179	if (j < separatorWidgets.size()) {
3180	sepWidget = separatorWidgets.at(j);
3181	} else {
3182	sepWidget = qobject_cast<QMainWindowLayout*>(mainWindow->layout())->getSeparatorWidget();
3183	separatorWidgets.append(sepWidget);
3184	}
3185	j++;
3186
3187	#ifndef QT_MAC_USE_COCOA
3188	sepWidget->raise();
3189	#endif
3190	QRect sepRect = separatorRect(i).adjusted(-2, -2, 2, 2);
3191	sepWidget->setGeometry(sepRect);
3192	sepWidget->setMask( QRegion(separatorRect(i).translated( - sepRect.topLeft())));
3193	sepWidget->show();
3194	}
3195	for (int i = j; i < separatorWidgets.size(); ++i)
3196	separatorWidgets.at(i)->hide();
3197
3198	separatorWidgets.resize(j);
3199	}
3200	#endif //QT_NO_TABBAR
3201
3202	QLayoutItem QDockAreaLayout::itemAt(int x, int index) const
3203	{
3204	Q_ASSERT(x != 0);
3205
3206	for (int i = 0; i < QInternal::DockCount; ++i) {
3207	const QDockAreaLayoutInfo &dock = docks[i];
3208	if (QLayoutItem *ret = dock.itemAt(x, index))
3209	return ret;
3210	}
3211
3212	if (centralWidgetItem && (*x)++ == index)
3213	return centralWidgetItem;
3214
3215	return 0;
3216	}
3217
3218	QLayoutItem QDockAreaLayout::takeAt(int x, int index)
3219	{
3220	Q_ASSERT(x != 0);
3221
3222	for (int i = 0; i < QInternal::DockCount; ++i) {
3223	QDockAreaLayoutInfo &dock = docks[i];
3224	if (QLayoutItem *ret = dock.takeAt(x, index))
3225	return ret;
3226	}
3227
3228	if (centralWidgetItem && (*x)++ == index) {
3229	QLayoutItem *ret = centralWidgetItem;
3230	centralWidgetItem = 0;
3231	return ret;
3232	}
3233
3234	return 0;
3235	}
3236
3237	void QDockAreaLayout::deleteAllLayoutItems()
3238	{
3239	for (int i = 0; i < QInternal::DockCount; ++i)
3240	docks[i].deleteAllLayoutItems();
3241	}
3242
3243	#ifndef QT_NO_TABBAR
3244	QSet<QTabBar*> QDockAreaLayout::usedTabBars() const
3245	{
3246	QSet<QTabBar*> result;
3247	for (int i = 0; i < QInternal::DockCount; ++i) {
3248	const QDockAreaLayoutInfo &dock = docks[i];
3249	result += dock.usedTabBars();
3250	}
3251	return result;
3252	}
3253
3254	// Returns the set of all used separator widgets
3255	QSet<QWidget*> QDockAreaLayout::usedSeparatorWidgets() const
3256	{
3257	QSet<QWidget*> result;
3258
3259	for (int i = 0; i < separatorWidgets.count(); ++i)
3260	result << separatorWidgets.at(i);
3261	for (int i = 0; i < QInternal::DockCount; ++i) {
3262	const QDockAreaLayoutInfo &dock = docks[i];
3263	result += dock.usedSeparatorWidgets();
3264	}
3265	return result;
3266	}
3267	#endif
3268
3269	QRect QDockAreaLayout::gapRect(const QList<int> &path) const
3270	{
3271	const QDockAreaLayoutInfo *info = this->info(path);
3272	if (info == 0)
3273	return QRect();
3274	const QList<QDockAreaLayoutItem> &item_list = info->item_list;
3275	Qt::Orientation o = info->o;
3276	int index = path.last();
3277	if (index < 0 \|\| index >= item_list.count())
3278	return QRect();
3279	const QDockAreaLayoutItem &item = item_list.at(index);
3280	if (!(item.flags & QDockAreaLayoutItem::GapItem))
3281	return QRect();
3282
3283	QRect result;
3284
3285	#ifndef QT_NO_TABBAR
3286	if (info->tabbed) {
3287	result = info->tabContentRect();
3288	} else
3289	#endif
3290	{
3291	int pos = item.pos;
3292	int size = item.size;
3293
3294	int prev = info->prev(index);
3295	int next = info->next(index);
3296
3297	if (prev != -1 && !(item_list.at(prev).flags & QDockAreaLayoutItem::GapItem)) {
3298	pos += sep;
3299	size -= sep;
3300	}
3301	if (next != -1 && !(item_list.at(next).flags & QDockAreaLayoutItem::GapItem))
3302	size -= sep;
3303
3304	QPoint p;
3305	rpick(o, p) = pos;
3306	rperp(o, p) = perp(o, info->rect.topLeft());
3307	QSize s;
3308	rpick(o, s) = size;
3309	rperp(o, s) = perp(o, info->rect.size());
3310
3311	result = QRect(p, s);
3312	}
3313
3314	return result;
3315	}
3316
3317	void QDockAreaLayout::keepSize(QDockWidget *w)
3318	{
3319	QList<int> path = indexOf(w);
3320	if (path.isEmpty())
3321	return;
3322	QDockAreaLayoutItem &item = this->item(path);
3323	if (item.size != -1)
3324	item.flags \|= QDockAreaLayoutItem::KeepSize;
3325	}
3326
3327	QT_END_NAMESPACE
3328
3329	#endif // QT_NO_DOCKWIDGET

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