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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qshortcutmap_p.h"
#include "private/qobject_p.h"
#include "qkeysequence.h"
#include "qgraphicsscene.h"
#include "qgraphicsview.h"
#include "qdebug.h"
#include "qevent.h"
#include "qwidget.h"
#include "qapplication.h"
#include "qvector.h"
#include "qmenu.h"
#include "qmenubar.h"
#include "qshortcut.h"
#include "qapplication_p.h"
#include <private/qaction_p.h>
#include <private/qkeymapper_p.h>
#include <private/qwidget_p.h>
#ifndef QT_NO_SHORTCUT
QT_BEGIN_NAMESPACE
// To enable verbose output uncomment below
//#define DEBUG_QSHORTCUTMAP
/* \internal
Entry data for QShortcutMap
Contains:
Keysequence for entry
Pointer to parent owning the sequence
*/
struct QShortcutEntry
{
QShortcutEntry()
: keyseq(0), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
{}
QShortcutEntry(const QKeySequence &k)
: keyseq(k), context(Qt::WindowShortcut), enabled(false), autorepeat(1), id(0), owner(0)
{}
QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i)
: keyseq(k), context(c), enabled(true), autorepeat(1), id(i), owner(o)
{}
QShortcutEntry(QObject *o, const QKeySequence &k, Qt::ShortcutContext c, int i, bool a)
: keyseq(k), context(c), enabled(true), autorepeat(a), id(i), owner(o)
{}
bool operator<(const QShortcutEntry &f) const
{ return keyseq < f.keyseq; }
QKeySequence keyseq;
Qt::ShortcutContext context;
bool enabled : 1;
bool autorepeat : 1;
signed int id;
QObject *owner;
};
#if 0 //ndef QT_NO_DEBUG_STREAM
/*! \internal
QDebug operator<< for easy debug output of the shortcut entries.
*/
static QDebug &operator<<(QDebug &dbg, const QShortcutEntry *se) {
if (!se)
return dbg << "QShortcutEntry(0x0)";
dbg.nospace()
<< "QShortcutEntry(" << se->keyseq
<< "), id(" << se->id << "), enabled(" << se->enabled << "), autorepeat(" << se->autorepeat
<< "), owner(" << se->owner << ')';
return dbg.space();
}
#endif // QT_NO_DEBUGSTREAM
/* \internal
Private data for QShortcutMap
*/
class QShortcutMapPrivate
{
Q_DECLARE_PUBLIC(QShortcutMap)
public:
QShortcutMapPrivate(QShortcutMap* parent)
: q_ptr(parent), currentId(0), ambigCount(0), currentState(QKeySequence::NoMatch)
{
identicals.reserve(10);
currentSequences.reserve(10);
}
QShortcutMap *q_ptr; // Private's parent
QList<QShortcutEntry> sequences; // All sequences!
int currentId; // Global shortcut ID number
int ambigCount; // Index of last enabled ambiguous dispatch
QKeySequence::SequenceMatch currentState;
QVector<QKeySequence> currentSequences; // Sequence for the current state
QVector<QKeySequence> newEntries;
QKeySequence prevSequence; // Sequence for the previous identical match
QVector<const QShortcutEntry*> identicals; // Last identical matches
};
/*! \internal
QShortcutMap constructor.
*/
QShortcutMap::QShortcutMap()
: d_ptr(new QShortcutMapPrivate(this))
{
resetState();
}
/*! \internal
QShortcutMap destructor.
*/
QShortcutMap::~QShortcutMap()
{
}
/*! \internal
Adds a shortcut to the global map.
Returns the id of the newly added shortcut.
*/
int QShortcutMap::addShortcut(QObject *owner, const QKeySequence &key, Qt::ShortcutContext context)
{
Q_ASSERT_X(owner, "QShortcutMap::addShortcut", "All shortcuts need an owner");
Q_ASSERT_X(!key.isEmpty(), "QShortcutMap::addShortcut", "Cannot add keyless shortcuts to map");
Q_D(QShortcutMap);
QShortcutEntry newEntry(owner, key, context, --(d->currentId), true);
QList<QShortcutEntry>::iterator it = qUpperBound(d->sequences.begin(), d->sequences.end(), newEntry);
d->sequences.insert(it, newEntry); // Insert sorted
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace()
<< "QShortcutMap::addShortcut(" << owner << ", "
<< key << ", " << context << ") = " << d->currentId;
#endif
return d->currentId;
}
/*! \internal
Removes a shortcut from the global map.
If \a owner is 0, all entries in the map with the key sequence specified
is removed. If \a key is null, all sequences for \a owner is removed from
the map. If \a id is 0, any identical \a key sequences owned by \a owner
are removed.
Returns the number of sequences removed from the map.
*/
int QShortcutMap::removeShortcut(int id, QObject *owner, const QKeySequence &key)
{
Q_D(QShortcutMap);
int itemsRemoved = 0;
bool allOwners = (owner == 0);
bool allKeys = key.isEmpty();
bool allIds = id == 0;
// Special case, remove everything
if (allOwners && allKeys && id == 0) {
itemsRemoved = d->sequences.size();
d->sequences.clear();
return itemsRemoved;
}
int i = d->sequences.size()-1;
while (i>=0)
{
const QShortcutEntry &entry = d->sequences.at(i);
int entryId = entry.id;
if ((allOwners || entry.owner == owner)
&& (allIds || entry.id == id)
&& (allKeys || entry.keyseq == key)) {
d->sequences.removeAt(i);
++itemsRemoved;
}
if (id == entryId)
return itemsRemoved;
--i;
}
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace()
<< "QShortcutMap::removeShortcut(" << id << ", " << owner << ", "
<< key << ") = " << itemsRemoved;
#endif
return itemsRemoved;
}
/*! \internal
Changes the enable state of a shortcut to \a enable.
If \a owner is 0, all entries in the map with the key sequence specified
is removed. If \a key is null, all sequences for \a owner is removed from
the map. If \a id is 0, any identical \a key sequences owned by \a owner
are changed.
Returns the number of sequences which are matched in the map.
*/
int QShortcutMap::setShortcutEnabled(bool enable, int id, QObject *owner, const QKeySequence &key)
{
Q_D(QShortcutMap);
int itemsChanged = 0;
bool allOwners = (owner == 0);
bool allKeys = key.isEmpty();
bool allIds = id == 0;
int i = d->sequences.size()-1;
while (i>=0)
{
QShortcutEntry entry = d->sequences.at(i);
if ((allOwners || entry.owner == owner)
&& (allIds || entry.id == id)
&& (allKeys || entry.keyseq == key)) {
d->sequences[i].enabled = enable;
++itemsChanged;
}
if (id == entry.id)
return itemsChanged;
--i;
}
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace()
<< "QShortcutMap::setShortcutEnabled(" << enable << ", " << id << ", "
<< owner << ", " << key << ") = " << itemsChanged;
#endif
return itemsChanged;
}
/*! \internal
Changes the auto repeat state of a shortcut to \a enable.
If \a owner is 0, all entries in the map with the key sequence specified
is removed. If \a key is null, all sequences for \a owner is removed from
the map. If \a id is 0, any identical \a key sequences owned by \a owner
are changed.
Returns the number of sequences which are matched in the map.
*/
int QShortcutMap::setShortcutAutoRepeat(bool on, int id, QObject *owner, const QKeySequence &key)
{
Q_D(QShortcutMap);
int itemsChanged = 0;
bool allOwners = (owner == 0);
bool allKeys = key.isEmpty();
bool allIds = id == 0;
int i = d->sequences.size()-1;
while (i>=0)
{
QShortcutEntry entry = d->sequences.at(i);
if ((allOwners || entry.owner == owner)
&& (allIds || entry.id == id)
&& (allKeys || entry.keyseq == key)) {
d->sequences[i].autorepeat = on;
++itemsChanged;
}
if (id == entry.id)
return itemsChanged;
--i;
}
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace()
<< "QShortcutMap::setShortcutAutoRepeat(" << on << ", " << id << ", "
<< owner << ", " << key << ") = " << itemsChanged;
#endif
return itemsChanged;
}
/*! \internal
Resets the state of the statemachine to NoMatch
*/
void QShortcutMap::resetState()
{
Q_D(QShortcutMap);
d->currentState = QKeySequence::NoMatch;
clearSequence(d->currentSequences);
}
/*! \internal
Returns the current state of the statemachine
*/
QKeySequence::SequenceMatch QShortcutMap::state()
{
Q_D(QShortcutMap);
return d->currentState;
}
/*! \internal
Uses ShortcutOverride event to see if any widgets want to override
the event. If not, uses nextState(QKeyEvent) to check for a grabbed
Shortcut, and dispatchEvent() is found an identical.
\sa nextState dispatchEvent
*/
bool QShortcutMap::tryShortcutEvent(QObject *o, QKeyEvent *e)
{
Q_D(QShortcutMap);
if (e->key() == Qt::Key_unknown)
return false;
bool wasAccepted = e->isAccepted();
bool wasSpontaneous = e->spont;
if (d->currentState == QKeySequence::NoMatch) {
ushort orgType = e->t;
e->t = QEvent::ShortcutOverride;
e->ignore();
QApplication::sendEvent(o, e);
e->t = orgType;
e->spont = wasSpontaneous;
if (e->isAccepted()) {
if (!wasAccepted)
e->ignore();
return false;
}
}
QKeySequence::SequenceMatch result = nextState(e);
bool stateWasAccepted = e->isAccepted();
if (wasAccepted)
e->accept();
else
e->ignore();
int identicalMatches = d->identicals.count();
switch(result) {
case QKeySequence::NoMatch:
return stateWasAccepted;
case QKeySequence::ExactMatch:
resetState();
dispatchEvent(e);
default:
break;
}
// If nextState is QKeySequence::ExactMatch && identicals.count == 0
// we've only found disabled shortcuts
return identicalMatches > 0 || result == QKeySequence::PartialMatch;
}
/*! \internal
Returns the next state of the statemachine
If return value is SequenceMatch::ExactMatch, then a call to matches()
will return a QObjects* list of all matching objects for the last matching
sequence.
*/
QKeySequence::SequenceMatch QShortcutMap::nextState(QKeyEvent *e)
{
Q_D(QShortcutMap);
// Modifiers can NOT be shortcuts...
if (e->key() >= Qt::Key_Shift &&
e->key() <= Qt::Key_Alt)
return d->currentState;
QKeySequence::SequenceMatch result = QKeySequence::NoMatch;
// We start fresh each time..
d->identicals.resize(0);
result = find(e);
if (result == QKeySequence::NoMatch && (e->modifiers() & Qt::KeypadModifier)) {
// Try to find a match without keypad modifier
QKeyEvent event = *e;
event.setModifiers(e->modifiers() & ~Qt::KeypadModifier);
result = find(&event);
}
if (result == QKeySequence::NoMatch && e->modifiers() & Qt::ShiftModifier) {
// If Shift + Key_Backtab, also try Shift + Qt::Key_Tab
if (e->key() == Qt::Key_Backtab) {
QKeyEvent pe = QKeyEvent(e->type(), Qt::Key_Tab, e->modifiers(), e->text());
result = find(&pe);
}
}
// Should we eat this key press?
if (d->currentState == QKeySequence::PartialMatch
|| (d->currentState == QKeySequence::ExactMatch && d->identicals.count()))
e->accept();
// Does the new state require us to clean up?
if (result == QKeySequence::NoMatch)
clearSequence(d->currentSequences);
d->currentState = result;
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace() << "QShortcutMap::nextState(" << e << ") = " << result;
#endif
return result;
}
/*! \internal
Determines if an enabled shortcut has a matcing key sequence.
*/
bool QShortcutMap::hasShortcutForKeySequence(const QKeySequence &seq) const
{
Q_D(const QShortcutMap);
QShortcutEntry entry(seq); // needed for searching
QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
QList<QShortcutEntry>::ConstIterator it = qLowerBound(d->sequences.constBegin(), itEnd, entry);
for (;it != itEnd; ++it) {
if (matches(entry.keyseq, (*it).keyseq) == QKeySequence::ExactMatch && correctContext(*it) && (*it).enabled) {
return true;
}
}
//end of the loop: we didn't find anything
return false;
}
/*! \internal
Returns the next state of the statemachine, based
on the new key event \a e.
Matches are appended to the vector of identicals,
which can be access through matches().
\sa matches
*/
QKeySequence::SequenceMatch QShortcutMap::find(QKeyEvent *e)
{
Q_D(QShortcutMap);
if (!d->sequences.count())
return QKeySequence::NoMatch;
createNewSequences(e, d->newEntries);
#if defined(DEBUG_QSHORTCUTMAP)
qDebug() << "Possible shortcut key sequences:" << d->newEntries;
#endif
// Should never happen
if (d->newEntries == d->currentSequences) {
Q_ASSERT_X(e->key() != Qt::Key_unknown || e->text().length(),
"QShortcutMap::find", "New sequence to find identical to previous");
return QKeySequence::NoMatch;
}
// Looking for new identicals, scrap old
d->identicals.resize(0);
bool partialFound = false;
bool identicalDisabledFound = false;
QVector<QKeySequence> okEntries;
int result = QKeySequence::NoMatch;
for (int i = d->newEntries.count()-1; i >= 0 ; --i) {
QShortcutEntry entry(d->newEntries.at(i)); // needed for searching
QList<QShortcutEntry>::ConstIterator itEnd = d->sequences.constEnd();
QList<QShortcutEntry>::ConstIterator it =
qLowerBound(d->sequences.constBegin(), itEnd, entry);
int oneKSResult = QKeySequence::NoMatch;
int tempRes = QKeySequence::NoMatch;
do {
if (it == itEnd)
break;
tempRes = matches(entry.keyseq, (*it).keyseq);
oneKSResult = qMax(oneKSResult, tempRes);
if (tempRes != QKeySequence::NoMatch && correctContext(*it)) {
if (tempRes == QKeySequence::ExactMatch) {
if ((*it).enabled)
d->identicals.append(&*it);
else
identicalDisabledFound = true;
} else if (tempRes == QKeySequence::PartialMatch) {
// We don't need partials, if we have identicals
if (d->identicals.size())
break;
// We only care about enabled partials, so we don't consume
// key events when all partials are disabled!
partialFound |= (*it).enabled;
}
}
++it;
// If we got a valid match on this run, there might still be more keys to check against,
// so we'll loop once more. If we get NoMatch, there's guaranteed no more possible
// matches in the shortcutmap.
} while (tempRes != QKeySequence::NoMatch);
// If the type of match improves (ergo, NoMatch->Partial, or Partial->Exact), clear the
// previous list. If this match is equal or better than the last match, append to the list
if (oneKSResult > result) {
okEntries.clear();
#if defined(DEBUG_QSHORTCUTMAP)
qDebug() << "Found better match (" << d->newEntries << "), clearing key sequence list";
#endif
}
if (oneKSResult && oneKSResult >= result) {
okEntries << d->newEntries.at(i);
#if defined(DEBUG_QSHORTCUTMAP)
qDebug() << "Added ok key sequence" << d->newEntries;
#endif
}
}
if (d->identicals.size()) {
result = QKeySequence::ExactMatch;
} else if (partialFound) {
result = QKeySequence::PartialMatch;
} else if (identicalDisabledFound) {
result = QKeySequence::ExactMatch;
} else {
clearSequence(d->currentSequences);
result = QKeySequence::NoMatch;
}
if (result != QKeySequence::NoMatch)
d->currentSequences = okEntries;
#if defined(DEBUG_QSHORTCUTMAP)
qDebug() << "Returning shortcut match == " << result;
#endif
return QKeySequence::SequenceMatch(result);
}
/*! \internal
Clears \a seq to an empty QKeySequence.
Same as doing (the slower)
\snippet doc/src/snippets/code/src_gui_kernel_qshortcutmap.cpp 0
*/
void QShortcutMap::clearSequence(QVector<QKeySequence> &ksl)
{
ksl.clear();
d_func()->newEntries.clear();
}
/*! \internal
Alters \a seq to the new sequence state, based on the
current sequence state, and the new key event \a e.
*/
void QShortcutMap::createNewSequences(QKeyEvent *e, QVector<QKeySequence> &ksl)
{
Q_D(QShortcutMap);
QList<int> possibleKeys = QKeyMapper::possibleKeys(e);
int pkTotal = possibleKeys.count();
if (!pkTotal)
return;
int ssActual = d->currentSequences.count();
int ssTotal = qMax(1, ssActual);
// Resize to possible permutations of the current sequence(s).
ksl.resize(pkTotal * ssTotal);
int index = ssActual ? d->currentSequences.at(0).count() : 0;
for (int pkNum = 0; pkNum < pkTotal; ++pkNum) {
for (int ssNum = 0; ssNum < ssTotal; ++ssNum) {
int i = (pkNum * ssTotal) + ssNum;
QKeySequence &curKsl = ksl[i];
if (ssActual) {
const QKeySequence &curSeq = d->currentSequences.at(ssNum);
curKsl.setKey(curSeq[0], 0);
curKsl.setKey(curSeq[1], 1);
curKsl.setKey(curSeq[2], 2);
curKsl.setKey(curSeq[3], 3);
} else {
curKsl.setKey(0, 0);
curKsl.setKey(0, 1);
curKsl.setKey(0, 2);
curKsl.setKey(0, 3);
}
curKsl.setKey(possibleKeys.at(pkNum), index);
}
}
}
/*! \internal
Basically the same function as QKeySequence::matches(const QKeySequence &seq) const
only that is specially handles Key_hyphen as Key_Minus, as people mix these up all the time and
they conceptually the same.
*/
QKeySequence::SequenceMatch QShortcutMap::matches(const QKeySequence &seq1,
const QKeySequence &seq2) const
{
uint userN = seq1.count(),
seqN = seq2.count();
if (userN > seqN)
return QKeySequence::NoMatch;
// If equal in length, we have a potential ExactMatch sequence,
// else we already know it can only be partial.
QKeySequence::SequenceMatch match = (userN == seqN
? QKeySequence::ExactMatch
: QKeySequence::PartialMatch);
for (uint i = 0; i < userN; ++i) {
int userKey = seq1[i],
sequenceKey = seq2[i];
if ((userKey & Qt::Key_unknown) == Qt::Key_hyphen)
userKey = (userKey & Qt::KeyboardModifierMask) | Qt::Key_Minus;
if ((sequenceKey & Qt::Key_unknown) == Qt::Key_hyphen)
sequenceKey = (sequenceKey & Qt::KeyboardModifierMask) | Qt::Key_Minus;
if (userKey != sequenceKey)
return QKeySequence::NoMatch;
}
return match;
}
/*! \internal
Returns true if the widget \a w is a logical sub window of the current
top-level widget.
*/
bool QShortcutMap::correctContext(const QShortcutEntry &item) const {
Q_ASSERT_X(item.owner, "QShortcutMap", "Shortcut has no owner. Illegal map state!");
QWidget *active_window = QApplication::activeWindow();
// popups do not become the active window,
// so we fake it here to get the correct context
// for the shortcut system.
if (QApplication::activePopupWidget())
active_window = QApplication::activePopupWidget();
if (!active_window)
return false;
#ifndef QT_NO_ACTION
if (QAction *a = qobject_cast<QAction *>(item.owner))
return correctContext(item.context, a, active_window);
#endif
#ifndef QT_NO_GRAPHICSVIEW
if (QGraphicsWidget *gw = qobject_cast<QGraphicsWidget *>(item.owner))
return correctGraphicsWidgetContext(item.context, gw, active_window);
#endif
QWidget *w = qobject_cast<QWidget *>(item.owner);
if (!w) {
QShortcut *s = qobject_cast<QShortcut *>(item.owner);
w = s->parentWidget();
}
return correctWidgetContext(item.context, w, active_window);
}
bool QShortcutMap::correctWidgetContext(Qt::ShortcutContext context, QWidget *w, QWidget *active_window) const
{
bool visible = w->isVisible();
#ifdef Q_WS_MAC
if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
visible = true;
#endif
if (!visible || !w->isEnabled())
return false;
if (context == Qt::ApplicationShortcut)
return QApplicationPrivate::tryModalHelper(w, 0); // true, unless w is shadowed by a modal dialog
if (context == Qt::WidgetShortcut)
return w == QApplication::focusWidget();
if (context == Qt::WidgetWithChildrenShortcut) {
const QWidget *tw = QApplication::focusWidget();
while (tw && tw != w && (tw->windowType() == Qt::Widget || tw->windowType() == Qt::Popup))
tw = tw->parentWidget();
return tw == w;
}
// Below is Qt::WindowShortcut context
QWidget *tlw = w->window();
#ifndef QT_NO_GRAPHICSVIEW
if (QWExtra *topData = tlw->d_func()->extra) {
if (topData->proxyWidget) {
bool res = correctGraphicsWidgetContext(context, (QGraphicsWidget *)topData->proxyWidget, active_window);
return res;
}
}
#endif
/* if a floating tool window is active, keep shortcuts on the
* parent working */
if (active_window != tlw && active_window && active_window->windowType() == Qt::Tool && active_window->parentWidget()) {
active_window = active_window->parentWidget()->window();
}
if (active_window != tlw)
return false;
/* if we live in a MDI subwindow, ignore the event if we are
not the active document window */
const QWidget* sw = w;
while (sw && !(sw->windowType() == Qt::SubWindow) && !sw->isWindow())
sw = sw->parentWidget();
if (sw && (sw->windowType() == Qt::SubWindow)) {
QWidget *focus_widget = QApplication::focusWidget();
while (focus_widget && focus_widget != sw)
focus_widget = focus_widget->parentWidget();
return sw == focus_widget;
}
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace() << "..true [Pass-through]";
#endif
return true;
}
#ifndef QT_NO_GRAPHICSVIEW
bool QShortcutMap::correctGraphicsWidgetContext(Qt::ShortcutContext context, QGraphicsWidget *w, QWidget *active_window) const
{
bool visible = w->isVisible();
#ifdef Q_WS_MAC
if (!qApp->testAttribute(Qt::AA_DontUseNativeMenuBar) && qobject_cast<QMenuBar *>(w))
visible = true;
#endif
if (!visible || !w->isEnabled() || !w->scene())
return false;
if (context == Qt::ApplicationShortcut) {
// Applicationwide shortcuts are always reachable unless their owner
// is shadowed by modality. In QGV there's no modality concept, but we
// must still check if all views are shadowed.
QList<QGraphicsView *> views = w->scene()->views();
for (int i = 0; i < views.size(); ++i) {
if (QApplicationPrivate::tryModalHelper(views.at(i), 0))
return true;
}
return false;
}
if (context == Qt::WidgetShortcut)
return static_cast<QGraphicsItem *>(w) == w->scene()->focusItem();
if (context == Qt::WidgetWithChildrenShortcut) {
const QGraphicsItem *ti = w->scene()->focusItem();
if (ti && ti->isWidget()) {
const QGraphicsWidget *tw = static_cast<const QGraphicsWidget *>(ti);
while (tw && tw != w && (tw->windowType() == Qt::Widget || tw->windowType() == Qt::Popup))
tw = tw->parentWidget();
return tw == w;
}
return false;
}
// Below is Qt::WindowShortcut context
// Find the active view (if any).
QList<QGraphicsView *> views = w->scene()->views();
QGraphicsView *activeView = 0;
for (int i = 0; i < views.size(); ++i) {
QGraphicsView *view = views.at(i);
if (view->window() == active_window) {
activeView = view;
break;
}
}
if (!activeView)
return false;
// The shortcut is reachable if owned by a windowless widget, or if the
// widget's window is the same as the focus item's window.
QGraphicsWidget *a = w->scene()->activeWindow();
return !w->window() || a == w->window();
}
#endif
#ifndef QT_NO_ACTION
bool QShortcutMap::correctContext(Qt::ShortcutContext context, QAction *a, QWidget *active_window) const
{
const QList<QWidget *> &widgets = a->d_func()->widgets;
#if defined(DEBUG_QSHORTCUTMAP)
if (widgets.isEmpty())
qDebug() << a << "not connected to any widgets; won't trigger";
#endif
for (int i = 0; i < widgets.size(); ++i) {
QWidget *w = widgets.at(i);
#ifndef QT_NO_MENU
if (QMenu *menu = qobject_cast<QMenu *>(w)) {
QAction *a = menu->menuAction();
if (correctContext(context, a, active_window))
return true;
} else
#endif
if (correctWidgetContext(context, w, active_window))
return true;
}
#ifndef QT_NO_GRAPHICSVIEW
const QList<QGraphicsWidget *> &graphicsWidgets = a->d_func()->graphicsWidgets;
#if defined(DEBUG_QSHORTCUTMAP)
if (graphicsWidgets.isEmpty())
qDebug() << a << "not connected to any widgets; won't trigger";
#endif
for (int i = 0; i < graphicsWidgets.size(); ++i) {
QGraphicsWidget *w = graphicsWidgets.at(i);
if (correctGraphicsWidgetContext(context, w, active_window))
return true;
}
#endif
return false;
}
#endif // QT_NO_ACTION
/*! \internal
Converts keyboard button states into modifier states
*/
int QShortcutMap::translateModifiers(Qt::KeyboardModifiers modifiers)
{
int result = 0;
if (modifiers & Qt::ShiftModifier)
result |= Qt::SHIFT;
if (modifiers & Qt::ControlModifier)
result |= Qt::CTRL;
if (modifiers & Qt::MetaModifier)
result |= Qt::META;
if (modifiers & Qt::AltModifier)
result |= Qt::ALT;
return result;
}
/*! \internal
Returns the vector of QShortcutEntry's matching the last Identical state.
*/
QVector<const QShortcutEntry*> QShortcutMap::matches() const
{
Q_D(const QShortcutMap);
return d->identicals;
}
/*! \internal
Dispatches QShortcutEvents to widgets who grabbed the matched key sequence.
*/
void QShortcutMap::dispatchEvent(QKeyEvent *e)
{
Q_D(QShortcutMap);
if (!d->identicals.size())
return;
const QKeySequence &curKey = d->identicals.at(0)->keyseq;
if (d->prevSequence != curKey) {
d->ambigCount = 0;
d->prevSequence = curKey;
}
// Find next
const QShortcutEntry *current = 0, *next = 0;
int i = 0, enabledShortcuts = 0;
while(i < d->identicals.size()) {
current = d->identicals.at(i);
if (current->enabled || !next){
++enabledShortcuts;
if (enabledShortcuts > d->ambigCount + 1)
break;
next = current;
}
++i;
}
d->ambigCount = (d->identicals.size() == i ? 0 : d->ambigCount + 1);
// Don't trigger shortcut if we're autorepeating and the shortcut is
// grabbed with not accepting autorepeats.
if (!next || (e->isAutoRepeat() && !next->autorepeat))
return;
// Dispatch next enabled
#if defined(DEBUG_QSHORTCUTMAP)
qDebug().nospace()
<< "QShortcutMap::dispatchEvent(): Sending QShortcutEvent(\""
<< (QString)next->keyseq << "\", " << next->id << ", "
<< (bool)(enabledShortcuts>1) << ") to object(" << next->owner << ')';
#endif
QShortcutEvent se(next->keyseq, next->id, enabledShortcuts>1);
QApplication::sendEvent(const_cast<QObject *>(next->owner), &se);
}
/* \internal
QShortcutMap dump function, only available when DEBUG_QSHORTCUTMAP is
defined.
*/
#if defined(Dump_QShortcutMap)
void QShortcutMap::dumpMap() const
{
Q_D(const QShortcutMap);
for (int i = 0; i < d->sequences.size(); ++i)
qDebug().nospace() << &(d->sequences.at(i));
}
#endif
QT_END_NAMESPACE
#endif // QT_NO_SHORTCUT
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