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source: trunk/src/gui/kernel/qshortcutmap.cpp@ 624

Last change on this file since 624 was 561, checked in by Dmitry A. Kuminov, 15 years ago
trunk: Merged in qt 4.6.1 sources.
File size: 29.5 KB

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1	/****************************************************************************
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3	** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4	** All rights reserved.
5	** Contact: Nokia Corporation ([email protected])
6	**
7	** This file is part of the QtGui module of the Qt Toolkit.
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41
42	#include "qshortcutmap_p.h"
43	#include "private/qobject_p.h"
44	#include "qkeysequence.h"
45	#include "qgraphicsscene.h"
46	#include "qgraphicsview.h"
47	#include "qdebug.h"
48	#include "qevent.h"
49	#include "qwidget.h"
50	#include "qapplication.h"
51	#include "qvector.h"
52	#include "qmenu.h"
53	#include "qmenubar.h"
54	#include "qshortcut.h"
55	#include "qapplication_p.h"
56	#include <private/qaction_p.h>
57	#include <private/qkeymapper_p.h>
58	#include <private/qwidget_p.h>
59
60	#ifndef QT_NO_SHORTCUT
61
62	QT_BEGIN_NAMESPACE
63
64	// To enable verbose output uncomment below
65	//#define DEBUG_QSHORTCUTMAP
66
67	/* \internal
68	Entry data for QShortcutMap
69	Contains:
70	Keysequence for entry
71	Pointer to parent owning the sequence
72	*/
73	struct QShortcutEntry
74	{
75	QShortcutEntry()
76	: keyseq(0), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
77	{}
78
79	QShortcutEntry(const QKeySequence &k)
80	: keyseq(k), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
81	{}
82
83	QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i)
84	: keyseq(k), context(c), enabled(true), autorepeat(1), id(i), owner(o)
85	{}
86
87	QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i, bool a)
88	: keyseq(k), context(c), enabled(true), autorepeat(a), id(i), owner(o)
89	{}
90
91	bool operator<(const QShortcutEntry &f) const
92	{ return keyseq < f.keyseq; }
93
94	QKeySequence keyseq;
95	Qt::ShortcutContext context;
96	bool enabled : 1;
97	bool autorepeat : 1;
98	signed int id;
99	QObject *owner;
100	};
101
102	#if 0 //ndef QT_NO_DEBUG_STREAM
103	/*! \internal
104	QDebug operator<< for easy debug output of the shortcut entries.
105	*/
106	static QDebug &operator<<(QDebug &dbg, const QShortcutEntry *se) {
107	if (!se)
108	return dbg << "QShortcutEntry(0x0)";
109	dbg.nospace()
110	<< "QShortcutEntry(" << se->keyseq
111	<< "), id(" << se->id << "), enabled(" << se->enabled << "), autorepeat(" << se->autorepeat
112	<< "), owner(" << se->owner << ')';
113	return dbg.space();
114	}
115	#endif // QT_NO_DEBUGSTREAM
116
117	/* \internal
118	Private data for QShortcutMap
119	*/
120	class QShortcutMapPrivate
121	{
122	Q_DECLARE_PUBLIC(QShortcutMap)
123
124	public:
125	QShortcutMapPrivate(QShortcutMap* parent)
126	: q_ptr(parent), currentId(0), ambigCount(0), currentState(QKeySequence::NoMatch)
127	{
128	identicals.reserve(10);
129	currentSequences.reserve(10);
130	}
131	QShortcutMap *q_ptr; // Private's parent
132
133	QList<QShortcutEntry> sequences; // All sequences!
134
135	int currentId; // Global shortcut ID number
136	int ambigCount; // Index of last enabled ambiguous dispatch
137	QKeySequence::SequenceMatch currentState;
138	QVector<QKeySequence> currentSequences; // Sequence for the current state
139	QVector<QKeySequence> newEntries;
140	QKeySequence prevSequence; // Sequence for the previous identical match
141	QVector<const QShortcutEntry*> identicals; // Last identical matches
142	};
143
144
145	/*! \internal
146	QShortcutMap constructor.
147	*/
148	QShortcutMap::QShortcutMap()
149	: d_ptr(new QShortcutMapPrivate(this))
150	{
151	resetState();
152	}
153
154	/*! \internal
155	QShortcutMap destructor.
156	*/
157	QShortcutMap::~QShortcutMap()
158	{
159	}
160
161	/*! \internal
162	Adds a shortcut to the global map.
163	Returns the id of the newly added shortcut.
164	*/
165	int QShortcutMap::addShortcut(QObject *owner, const QKeySequence &key, Qt::ShortcutContext context)
166	{
167	Q_ASSERT_X(owner, "QShortcutMap::addShortcut", "All shortcuts need an owner");
168	Q_ASSERT_X(!key.isEmpty(), "QShortcutMap::addShortcut", "Cannot add keyless shortcuts to map");
169	Q_D(QShortcutMap);
170
171	QShortcutEntry newEntry(owner, key, context, --(d->currentId), true);
172	QList<QShortcutEntry>::iterator it = qUpperBound(d->sequences.begin(), d->sequences.end(), newEntry);
173	d->sequences.insert(it, newEntry); // Insert sorted
174	#if defined(DEBUG_QSHORTCUTMAP)
175	qDebug().nospace()
176	<< "QShortcutMap::addShortcut(" << owner << ", "
177	<< key << ", " << context << ") = " << d->currentId;
178	#endif
179	return d->currentId;
180	}
181
182	/*! \internal
183	Removes a shortcut from the global map.
184	If \a owner is 0, all entries in the map with the key sequence specified
185	is removed. If \a key is null, all sequences for \a owner is removed from
186	the map. If \a id is 0, any identical \a key sequences owned by \a owner
187	are removed.
188	Returns the number of sequences removed from the map.
189	*/
190
191	int QShortcutMap::removeShortcut(int id, QObject *owner, const QKeySequence &key)
192	{
193	Q_D(QShortcutMap);
194	int itemsRemoved = 0;
195	bool allOwners = (owner == 0);
196	bool allKeys = key.isEmpty();
197	bool allIds = id == 0;
198
199	// Special case, remove everything
200	if (allOwners && allKeys && id == 0) {
201	itemsRemoved = d->sequences.size();
202	d->sequences.clear();
203	return itemsRemoved;
204	}
205
206	int i = d->sequences.size()-1;
207	while (i>=0)
208	{
209	const QShortcutEntry &entry = d->sequences.at(i);
210	int entryId = entry.id;
211	if ((allOwners \|\| entry.owner == owner)
212	&& (allIds \|\| entry.id == id)
213	&& (allKeys \|\| entry.keyseq == key)) {
214	d->sequences.removeAt(i);
215	++itemsRemoved;
216	}
217	if (id == entryId)
218	return itemsRemoved;
219	--i;
220	}
221	#if defined(DEBUG_QSHORTCUTMAP)
222	qDebug().nospace()
223	<< "QShortcutMap::removeShortcut(" << id << ", " << owner << ", "
224	<< key << ") = " << itemsRemoved;
225	#endif
226	return itemsRemoved;
227	}
228
229	/*! \internal
230	Changes the enable state of a shortcut to \a enable.
231	If \a owner is 0, all entries in the map with the key sequence specified
232	is removed. If \a key is null, all sequences for \a owner is removed from
233	the map. If \a id is 0, any identical \a key sequences owned by \a owner
234	are changed.
235	Returns the number of sequences which are matched in the map.
236	*/
237	int QShortcutMap::setShortcutEnabled(bool enable, int id, QObject *owner, const QKeySequence &key)
238	{
239	Q_D(QShortcutMap);
240	int itemsChanged = 0;
241	bool allOwners = (owner == 0);
242	bool allKeys = key.isEmpty();
243	bool allIds = id == 0;
244
245	int i = d->sequences.size()-1;
246	while (i>=0)
247	{
248	QShortcutEntry entry = d->sequences.at(i);
249	if ((allOwners \|\| entry.owner == owner)
250	&& (allIds \|\| entry.id == id)
251	&& (allKeys \|\| entry.keyseq == key)) {
252	d->sequences[i].enabled = enable;
253	++itemsChanged;
254	}
255	if (id == entry.id)
256	return itemsChanged;
257	--i;
258	}
259	#if defined(DEBUG_QSHORTCUTMAP)
260	qDebug().nospace()
261	<< "QShortcutMap::setShortcutEnabled(" << enable << ", " << id << ", "
262	<< owner << ", " << key << ") = " << itemsChanged;
263	#endif
264	return itemsChanged;
265	}
266
267	/*! \internal
268	Changes the auto repeat state of a shortcut to \a enable.
269	If \a owner is 0, all entries in the map with the key sequence specified
270	is removed. If \a key is null, all sequences for \a owner is removed from
271	the map. If \a id is 0, any identical \a key sequences owned by \a owner
272	are changed.
273	Returns the number of sequences which are matched in the map.
274	*/
275	int QShortcutMap::setShortcutAutoRepeat(bool on, int id, QObject *owner, const QKeySequence &key)
276	{
277	Q_D(QShortcutMap);
278	int itemsChanged = 0;
279	bool allOwners = (owner == 0);
280	bool allKeys = key.isEmpty();
281	bool allIds = id == 0;
282
283	int i = d->sequences.size()-1;
284	while (i>=0)
285	{
286	QShortcutEntry entry = d->sequences.at(i);
287	if ((allOwners \|\| entry.owner == owner)
288	&& (allIds \|\| entry.id == id)
289	&& (allKeys \|\| entry.keyseq == key)) {
290	d->sequences[i].autorepeat = on;
291	++itemsChanged;
292	}
293	if (id == entry.id)
294	return itemsChanged;
295	--i;
296	}
297	#if defined(DEBUG_QSHORTCUTMAP)
298	qDebug().nospace()
299	<< "QShortcutMap::setShortcutAutoRepeat(" << on << ", " << id << ", "
300	<< owner << ", " << key << ") = " << itemsChanged;
301	#endif
302	return itemsChanged;
303	}
304
305	/*! \internal
306	Resets the state of the statemachine to NoMatch
307	*/
308	void QShortcutMap::resetState()
309	{
310	Q_D(QShortcutMap);
311	d->currentState = QKeySequence::NoMatch;
312	clearSequence(d->currentSequences);
313	}
314
315	/*! \internal
316	Returns the current state of the statemachine
317	*/
318	QKeySequence::SequenceMatch QShortcutMap::state()
319	{
320	Q_D(QShortcutMap);
321	return d->currentState;
322	}
323
324	/*! \internal
325	Uses ShortcutOverride event to see if any widgets want to override
326	the event. If not, uses nextState(QKeyEvent) to check for a grabbed
327	Shortcut, and dispatchEvent() is found an identical.
328	\sa nextState dispatchEvent
329	*/
330	bool QShortcutMap::tryShortcutEvent(QObject o, QKeyEvent e)
331	{
332	Q_D(QShortcutMap);
333
334	bool wasAccepted = e->isAccepted();
335	bool wasSpontaneous = e->spont;
336	if (d->currentState == QKeySequence::NoMatch) {
337	ushort orgType = e->t;
338	e->t = QEvent::ShortcutOverride;
339	e->ignore();
340	QApplication::sendEvent(o, e);
341	e->t = orgType;
342	e->spont = wasSpontaneous;
343	if (e->isAccepted()) {
344	if (!wasAccepted)
345	e->ignore();
346	return false;
347	}
348	}
349
350	QKeySequence::SequenceMatch result = nextState(e);
351	bool stateWasAccepted = e->isAccepted();
352	if (wasAccepted)
353	e->accept();
354	else
355	e->ignore();
356
357	int identicalMatches = d->identicals.count();
358
359	switch(result) {
360	case QKeySequence::NoMatch:
361	return stateWasAccepted;
362	case QKeySequence::ExactMatch:
363	resetState();
364	dispatchEvent(e);
365	default:
366	break;
367	}
368	// If nextState is QKeySequence::ExactMatch && identicals.count == 0
369	// we've only found disabled shortcuts
370	return identicalMatches > 0 \|\| result == QKeySequence::PartialMatch;
371	}
372
373	/*! \internal
374	Returns the next state of the statemachine
375	If return value is SequenceMatch::ExactMatch, then a call to matches()
376	will return a QObjects* list of all matching objects for the last matching
377	sequence.
378	*/
379	QKeySequence::SequenceMatch QShortcutMap::nextState(QKeyEvent *e)
380	{
381	Q_D(QShortcutMap);
382	// Modifiers can NOT be shortcuts...
383	if (e->key() >= Qt::Key_Shift &&
384	e->key() <= Qt::Key_Alt)
385	return d->currentState;
386
387	QKeySequence::SequenceMatch result = QKeySequence::NoMatch;
388
389	// We start fresh each time..
390	d->identicals.resize(0);
391
392	result = find(e);
393	if (result == QKeySequence::NoMatch && e->modifiers() & Qt::ShiftModifier) {
394	// If Shift + Key_Backtab, also try Shift + Qt::Key_Tab
395	if (e->key() == Qt::Key_Backtab) {
396	QKeyEvent pe = QKeyEvent(e->type(), Qt::Key_Tab, e->modifiers(), e->text());
397	result = find(&pe);
398	}
399	}
400
401	// Should we eat this key press?
402	if (d->currentState == QKeySequence::PartialMatch
403	\|\| (d->currentState == QKeySequence::ExactMatch && d->identicals.count()))
404	e->accept();
405	// Does the new state require us to clean up?
406	if (result == QKeySequence::NoMatch)
407	clearSequence(d->currentSequences);
408	d->currentState = result;
409
410	#if defined(DEBUG_QSHORTCUTMAP)
411	qDebug().nospace() << "QShortcutMap::nextState(" << e << ") = " << result;
412	#endif
413	return result;
414	}
415
416
417	/*! \internal
418	Determines if an enabled shortcut has a matcing key sequence.
419	*/
420	bool QShortcutMap::hasShortcutForKeySequence(const QKeySequence &seq) const
421	{
422	Q_D(const QShortcutMap);
423	QShortcutEntry entry(seq); // needed for searching
424	QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
425	QList<QShortcutEntry>::ConstIterator it = qLowerBound(d->sequences.constBegin(), itEnd, entry);
426
427	for (;it != itEnd; ++it) {
428	if (matches(entry.keyseq, (it).keyseq) == QKeySequence::ExactMatch && correctContext(it) && (*it).enabled) {
429	return true;
430	}
431	}
432
433	//end of the loop: we didn't find anything
434	return false;
435	}
436
437	/*! \internal
438	Returns the next state of the statemachine, based
439	on the new key event \a e.
440	Matches are appended to the vector of identicals,
441	which can be access through matches().
442	\sa matches
443	*/
444	QKeySequence::SequenceMatch QShortcutMap::find(QKeyEvent *e)
445	{
446	Q_D(QShortcutMap);
447	if (!d->sequences.count())
448	return QKeySequence::NoMatch;
449
450	createNewSequences(e, d->newEntries);
451	#if defined(DEBUG_QSHORTCUTMAP)
452	qDebug() << "Possible shortcut key sequences:" << d->newEntries;
453	#endif
454
455	// Should never happen
456	if (d->newEntries == d->currentSequences) {
457	Q_ASSERT_X(e->key() != Qt::Key_unknown \|\| e->text().length(),
458	"QShortcutMap::find", "New sequence to find identical to previous");
459	return QKeySequence::NoMatch;
460	}
461
462	// Looking for new identicals, scrap old
463	d->identicals.resize(0);
464
465	bool partialFound = false;
466	bool identicalDisabledFound = false;
467	QVector<QKeySequence> okEntries;
468	int result = QKeySequence::NoMatch;
469	for (int i = d->newEntries.count()-1; i >= 0 ; --i) {
470	QShortcutEntry entry(d->newEntries.at(i)); // needed for searching
471	QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
472	QList<QShortcutEntry>::ConstIterator it =
473	qLowerBound(d->sequences.constBegin(), itEnd, entry);
474
475	int oneKSResult = QKeySequence::NoMatch;
476	int tempRes = QKeySequence::NoMatch;
477	do {
478	if (it == itEnd)
479	break;
480	tempRes = matches(entry.keyseq, (*it).keyseq);
481	oneKSResult = qMax(oneKSResult, tempRes);
482	if (tempRes != QKeySequence::NoMatch && correctContext(*it)) {
483	if (tempRes == QKeySequence::ExactMatch) {
484	if ((*it).enabled)
485	d->identicals.append(&*it);
486	else
487	identicalDisabledFound = true;
488	} else if (tempRes == QKeySequence::PartialMatch) {
489	// We don't need partials, if we have identicals
490	if (d->identicals.size())
491	break;
492	// We only care about enabled partials, so we don't consume
493	// key events when all partials are disabled!
494	partialFound \|= (*it).enabled;
495	}
496	}
497	++it;
498	// If we got a valid match on this run, there might still be more keys to check against,
499	// so we'll loop once more. If we get NoMatch, there's guaranteed no more possible
500	// matches in the shortcutmap.
501	} while (tempRes != QKeySequence::NoMatch);
502
503	// If the type of match improves (ergo, NoMatch->Partial, or Partial->Exact), clear the
504	// previous list. If this match is equal or better than the last match, append to the list
505	if (oneKSResult > result) {
506	okEntries.clear();
507	#if defined(DEBUG_QSHORTCUTMAP)
508	qDebug() << "Found better match (" << d->newEntries << "), clearing key sequence list";
509	#endif
510	}
511	if (oneKSResult && oneKSResult >= result) {
512	okEntries << d->newEntries.at(i);
513	#if defined(DEBUG_QSHORTCUTMAP)
514	qDebug() << "Added ok key sequence" << d->newEntries;
515	#endif
516	}
517	}
518
519	if (d->identicals.size()) {
520	result = QKeySequence::ExactMatch;
521	} else if (partialFound) {
522	result = QKeySequence::PartialMatch;
523	} else if (identicalDisabledFound) {
524	result = QKeySequence::ExactMatch;
525	} else {
526	clearSequence(d->currentSequences);
527	result = QKeySequence::NoMatch;
528	}
529	if (result != QKeySequence::NoMatch)
530	d->currentSequences = okEntries;
531	#if defined(DEBUG_QSHORTCUTMAP)
532	qDebug() << "Returning shortcut match == " << result;
533	#endif
534	return QKeySequence::SequenceMatch(result);
535	}
536
537	/*! \internal
538	Clears \a seq to an empty QKeySequence.
539	Same as doing (the slower)
540	\snippet doc/src/snippets/code/src_gui_kernel_qshortcutmap.cpp 0
541	*/
542	void QShortcutMap::clearSequence(QVector<QKeySequence> &ksl)
543	{
544	ksl.clear();
545	d_func()->newEntries.clear();
546	}
547
548	/*! \internal
549	Alters \a seq to the new sequence state, based on the
550	current sequence state, and the new key event \a e.
551	*/
552	void QShortcutMap::createNewSequences(QKeyEvent *e, QVector<QKeySequence> &ksl)
553	{
554	Q_D(QShortcutMap);
555	QList<int> possibleKeys = QKeyMapper::possibleKeys(e);
556	int pkTotal = possibleKeys.count();
557	if (!pkTotal)
558	return;
559
560	int ssActual = d->currentSequences.count();
561	int ssTotal = qMax(1, ssActual);
562	// Resize to possible permutations of the current sequence(s).
563	ksl.resize(pkTotal * ssTotal);
564
565	int index = ssActual ? d->currentSequences.at(0).count() : 0;
566	for (int pkNum = 0; pkNum < pkTotal; ++pkNum) {
567	for (int ssNum = 0; ssNum < ssTotal; ++ssNum) {
568	int i = (pkNum * ssTotal) + ssNum;
569	QKeySequence &curKsl = ksl[i];
570	if (ssActual) {
571	const QKeySequence &curSeq = d->currentSequences.at(ssNum);
572	curKsl.setKey(curSeq[0], 0);
573	curKsl.setKey(curSeq[1], 1);
574	curKsl.setKey(curSeq[2], 2);
575	curKsl.setKey(curSeq[3], 3);
576	} else {
577	curKsl.setKey(0, 0);
578	curKsl.setKey(0, 1);
579	curKsl.setKey(0, 2);
580	curKsl.setKey(0, 3);
581	}
582	// Filtering keycode here with 0xdfffffff to ignore the Keypad modifier
583	curKsl.setKey(possibleKeys.at(pkNum) & 0xdfffffff, index);
584	}
585	}
586	}
587
588	/*! \internal
589	Basically the same function as QKeySequence::matches(const QKeySequence &seq) const
590	only that is specially handles Key_hyphen as Key_Minus, as people mix these up all the time and
591	they conceptually the same.
592	*/
593	QKeySequence::SequenceMatch QShortcutMap::matches(const QKeySequence &seq1,
594	const QKeySequence &seq2) const
595	{
596	uint userN = seq1.count(),
597	seqN = seq2.count();
598
599	if (userN > seqN)
600	return QKeySequence::NoMatch;
601
602	// If equal in length, we have a potential ExactMatch sequence,
603	// else we already know it can only be partial.
604	QKeySequence::SequenceMatch match = (userN == seqN
605	? QKeySequence::ExactMatch
606	: QKeySequence::PartialMatch);
607
608	for (uint i = 0; i < userN; ++i) {
609	int userKey = seq1[i],
610	sequenceKey = seq2[i];
611	if ((userKey & Qt::Key_unknown) == Qt::Key_hyphen)
612	userKey = (userKey & Qt::KeyboardModifierMask) \| Qt::Key_Minus;
613	if ((sequenceKey & Qt::Key_unknown) == Qt::Key_hyphen)
614	sequenceKey = (sequenceKey & Qt::KeyboardModifierMask) \| Qt::Key_Minus;
615	if (userKey != sequenceKey)
616	return QKeySequence::NoMatch;
617	}
618	return match;
619	}
620
621	/*! \internal
622	Returns true if the widget \a w is a logical sub window of the current
623	top-level widget.
624	*/
625	bool QShortcutMap::correctContext(const QShortcutEntry &item) const {
626	Q_ASSERT_X(item.owner, "QShortcutMap", "Shortcut has no owner. Illegal map state!");
627
628	QWidget *active_window = QApplication::activeWindow();
629
630	// popups do not become the active window,
631	// so we fake it here to get the correct context
632	// for the shortcut system.
633	if (QApplication::activePopupWidget())
634	active_window = QApplication::activePopupWidget();
635
636	if (!active_window)
637	return false;
638	#ifndef QT_NO_ACTION
639	if (QAction a = qobject_cast<QAction >(item.owner))
640	return correctContext(item.context, a, active_window);
641	#endif
642	#ifndef QT_NO_GRAPHICSVIEW
643	if (QGraphicsWidget gw = qobject_cast<QGraphicsWidget >(item.owner))
644	return correctGraphicsWidgetContext(item.context, gw, active_window);
645	#endif
646	QWidget w = qobject_cast<QWidget >(item.owner);
647	if (!w) {
648	QShortcut s = qobject_cast<QShortcut >(item.owner);
649	w = s->parentWidget();
650	}
651	return correctWidgetContext(item.context, w, active_window);
652	}
653
654	bool QShortcutMap::correctWidgetContext(Qt::ShortcutContext context, QWidget w, QWidget active_window) const
655	{
656	bool visible = w->isVisible();
657	#ifdef Q_WS_MAC
658	if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
659	visible = true;
660	#endif
661
662	if (!visible \|\| !w->isEnabled())
663	return false;
664
665	if (context == Qt::ApplicationShortcut)
666	return QApplicationPrivate::tryModalHelper(w, 0); // true, unless w is shadowed by a modal dialog
667
668	if (context == Qt::WidgetShortcut)
669	return w == QApplication::focusWidget();
670
671	if (context == Qt::WidgetWithChildrenShortcut) {
672	const QWidget *tw = QApplication::focusWidget();
673	while (tw && tw != w && (tw->windowType() == Qt::Widget \|\| tw->windowType() == Qt::Popup))
674	tw = tw->parentWidget();
675	return tw == w;
676	}
677
678	// Below is Qt::WindowShortcut context
679	QWidget *tlw = w->window();
680	#ifndef QT_NO_GRAPHICSVIEW
681	if (QWExtra *topData = tlw->d_func()->extra) {
682	if (topData->proxyWidget) {
683	bool res = correctGraphicsWidgetContext(context, (QGraphicsWidget *)topData->proxyWidget, active_window);
684	return res;
685	}
686	}
687	#endif
688
689	/* if a floating tool window is active, keep shortcuts on the
690	* parent working */
691	if (active_window != tlw && active_window && active_window->windowType() == Qt::Tool && active_window->parentWidget()) {
692	active_window = active_window->parentWidget()->window();
693	}
694
695	if (active_window != tlw)
696	return false;
697
698	/* if we live in a MDI subwindow, ignore the event if we are
699	not the active document window */
700	const QWidget* sw = w;
701	while (sw && !(sw->windowType() == Qt::SubWindow) && !sw->isWindow())
702	sw = sw->parentWidget();
703	if (sw && (sw->windowType() == Qt::SubWindow)) {
704	QWidget *focus_widget = QApplication::focusWidget();
705	while (focus_widget && focus_widget != sw)
706	focus_widget = focus_widget->parentWidget();
707	return sw == focus_widget;
708	}
709
710	#if defined(DEBUG_QSHORTCUTMAP)
711	qDebug().nospace() << "..true [Pass-through]";
712	#endif
713	return true;
714	}
715
716	#ifndef QT_NO_GRAPHICSVIEW
717	bool QShortcutMap::correctGraphicsWidgetContext(Qt::ShortcutContext context, QGraphicsWidget w, QWidget active_window) const
718	{
719	bool visible = w->isVisible();
720	#ifdef Q_WS_MAC
721	if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
722	visible = true;
723	#endif
724
725	if (!visible \|\| !w->isEnabled() \|\| !w->scene())
726	return false;
727
728	if (context == Qt::ApplicationShortcut) {
729	// Applicationwide shortcuts are always reachable unless their owner
730	// is shadowed by modality. In QGV there's no modality concept, but we
731	// must still check if all views are shadowed.
732	QList<QGraphicsView *> views = w->scene()->views();
733	for (int i = 0; i < views.size(); ++i) {
734	if (QApplicationPrivate::tryModalHelper(views.at(i), 0))
735	return true;
736	}
737	return false;
738	}
739
740	if (context == Qt::WidgetShortcut)
741	return static_cast<QGraphicsItem *>(w) == w->scene()->focusItem();
742
743	if (context == Qt::WidgetWithChildrenShortcut) {
744	const QGraphicsItem *ti = w->scene()->focusItem();
745	if (ti && ti->isWidget()) {
746	const QGraphicsWidget tw = static_cast<const QGraphicsWidget >(ti);
747	while (tw && tw != w && (tw->windowType() == Qt::Widget \|\| tw->windowType() == Qt::Popup))
748	tw = tw->parentWidget();
749	return tw == w;
750	}
751	return false;
752	}
753
754	// Below is Qt::WindowShortcut context
755
756	// Find the active view (if any).
757	QList<QGraphicsView *> views = w->scene()->views();
758	QGraphicsView *activeView = 0;
759	for (int i = 0; i < views.size(); ++i) {
760	QGraphicsView *view = views.at(i);
761	if (view->window() == active_window) {
762	activeView = view;
763	break;
764	}
765	}
766	if (!activeView)
767	return false;
768
769	// The shortcut is reachable if owned by a windowless widget, or if the
770	// widget's window is the same as the focus item's window.
771	QGraphicsWidget *a = w->scene()->activeWindow();
772	return !w->window() \|\| a == w->window();
773	}
774	#endif
775
776	#ifndef QT_NO_ACTION
777	bool QShortcutMap::correctContext(Qt::ShortcutContext context, QAction a, QWidget active_window) const
778	{
779	const QList<QWidget *> &widgets = a->d_func()->widgets;
780	#if defined(DEBUG_QSHORTCUTMAP)
781	if (widgets.isEmpty())
782	qDebug() << a << "not connected to any widgets; won't trigger";
783	#endif
784	for (int i = 0; i < widgets.size(); ++i) {
785	QWidget *w = widgets.at(i);
786	#ifndef QT_NO_MENU
787	if (QMenu menu = qobject_cast<QMenu >(w)) {
788	QAction *a = menu->menuAction();
789	if (correctContext(context, a, active_window))
790	return true;
791	} else
792	#endif
793	if (correctWidgetContext(context, w, active_window))
794	return true;
795	}
796
797	#ifndef QT_NO_GRAPHICSVIEW
798	const QList<QGraphicsWidget *> &graphicsWidgets = a->d_func()->graphicsWidgets;
799	#if defined(DEBUG_QSHORTCUTMAP)
800	if (graphicsWidgets.isEmpty())
801	qDebug() << a << "not connected to any widgets; won't trigger";
802	#endif
803	for (int i = 0; i < graphicsWidgets.size(); ++i) {
804	QGraphicsWidget *w = graphicsWidgets.at(i);
805	if (correctGraphicsWidgetContext(context, w, active_window))
806	return true;
807	}
808	#endif
809	return false;
810	}
811	#endif // QT_NO_ACTION
812
813	/*! \internal
814	Converts keyboard button states into modifier states
815	*/
816	int QShortcutMap::translateModifiers(Qt::KeyboardModifiers modifiers)
817	{
818	int result = 0;
819	if (modifiers & Qt::ShiftModifier)
820	result \|= Qt::SHIFT;
821	if (modifiers & Qt::ControlModifier)
822	result \|= Qt::CTRL;
823	if (modifiers & Qt::MetaModifier)
824	result \|= Qt::META;
825	if (modifiers & Qt::AltModifier)
826	result \|= Qt::ALT;
827	return result;
828	}
829
830	/*! \internal
831	Returns the vector of QShortcutEntry's matching the last Identical state.
832	*/
833	QVector<const QShortcutEntry*> QShortcutMap::matches() const
834	{
835	Q_D(const QShortcutMap);
836	return d->identicals;
837	}
838
839	/*! \internal
840	Dispatches QShortcutEvents to widgets who grabbed the matched key sequence.
841	*/
842	void QShortcutMap::dispatchEvent(QKeyEvent *e)
843	{
844	Q_D(QShortcutMap);
845	if (!d->identicals.size())
846	return;
847
848	const QKeySequence &curKey = d->identicals.at(0)->keyseq;
849	if (d->prevSequence != curKey) {
850	d->ambigCount = 0;
851	d->prevSequence = curKey;
852	}
853	// Find next
854	const QShortcutEntry current = 0, next = 0;
855	int i = 0, enabledShortcuts = 0;
856	while(i < d->identicals.size()) {
857	current = d->identicals.at(i);
858	if (current->enabled \|\| !next){
859	++enabledShortcuts;
860	if (enabledShortcuts > d->ambigCount + 1)
861	break;
862	next = current;
863	}
864	++i;
865	}
866	d->ambigCount = (d->identicals.size() == i ? 0 : d->ambigCount + 1);
867	// Don't trigger shortcut if we're autorepeating and the shortcut is
868	// grabbed with not accepting autorepeats.
869	if (!next \|\| (e->isAutoRepeat() && !next->autorepeat))
870	return;
871	// Dispatch next enabled
872	#if defined(DEBUG_QSHORTCUTMAP)
873	qDebug().nospace()
874	<< "QShortcutMap::dispatchEvent(): Sending QShortcutEvent(\""
875	<< (QString)next->keyseq << "\", " << next->id << ", "
876	<< (bool)(enabledShortcuts>1) << ") to object(" << next->owner << ')';
877	#endif
878	QShortcutEvent se(next->keyseq, next->id, enabledShortcuts>1);
879	QApplication::sendEvent(const_cast<QObject *>(next->owner), &se);
880	}
881
882	/* \internal
883	QShortcutMap dump function, only available when DEBUG_QSHORTCUTMAP is
884	defined.
885	*/
886	#if defined(Dump_QShortcutMap)
887	void QShortcutMap::dumpMap() const
888	{
889	Q_D(const QShortcutMap);
890	for (int i = 0; i < d->sequences.size(); ++i)
891	qDebug().nospace() << &(d->sequences.at(i));
892	}
893	#endif
894
895	QT_END_NAMESPACE
896
897	#endif // QT_NO_SHORTCUT

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