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#include "q3accel.h"
#include "q3signal.h"
#include "qapplication.h"
#include "qwidget.h"
#include "q3ptrlist.h"
#include "qwhatsthis.h"
#include "qpointer.h"
#include "qstatusbar.h"
#include "qdockwidget.h"
#include "qevent.h"
#include "qkeysequence.h"
#include "private/qapplication_p.h"
QT_BEGIN_NAMESPACE
using namespace Qt;
/*!
\class Q3Accel
\brief The Q3Accel class handles keyboard accelerator and shortcut keys.
\compat
A keyboard accelerator triggers an action when a certain key
combination is pressed. The accelerator handles all keyboard
activity for all the children of one top-level widget, so it is
not affected by the keyboard focus.
In most cases, you will not need to use this class directly. Use
the QAction class to create actions with accelerators that can be
used in both menus and toolbars. If you're only interested in
menus use Q3MenuData::insertItem() or Q3MenuData::setAccel() to make
accelerators for operations that are also available on menus. Many
widgets automatically generate accelerators, such as QAbstractButton,
QGroupBox, QLabel (with QLabel::setBuddy()), QMenuBar, and QTabBar.
Example:
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 0
A Q3Accel contains a list of accelerator items that can be
manipulated using insertItem(), removeItem(), clear(), key() and
findKey().
Each accelerator item consists of an identifier and a \l
QKeySequence. A single key sequence consists of a keyboard code
combined with modifiers (Qt::SHIFT, Qt::CTRL, Qt::ALT, or
Qt::UNICODE_ACCEL). For example, Qt::CTRL + Qt::Key_P could be a shortcut
for printing a document. As an alternative, use Qt::UNICODE_ACCEL with the
unicode code point of the character. For example, Qt::UNICODE_ACCEL
+ 'A' gives the same accelerator as Qt::Key_A.
When an accelerator key is pressed, the accelerator sends out the
signal activated() with a number that identifies this particular
accelerator item. Accelerator items can also be individually
connected, so that two different keys will activate two different
slots (see connectItem() and disconnectItem()).
The activated() signal is \e not emitted when two or more
accelerators match the same key. Instead, the first matching
accelerator sends out the activatedAmbiguously() signal. By
pressing the key multiple times, users can navigate between all
matching accelerators. Some standard controls like QPushButton and
QCheckBox connect the activatedAmbiguously() signal to the
harmless setFocus() slot, whereas activated() is connected to a
slot invoking the button's action. Most controls, like QLabel and
QTabBar, treat activated() and activatedAmbiguously() as
equivalent.
Use setEnabled() to enable or disable all the items in an
accelerator, or setItemEnabled() to enable or disable individual
items. An item is active only when both the Q3Accel and the item
itself are enabled.
The function setWhatsThis() specifies a help text that appears
when the user presses an accelerator key in What's This mode.
The accelerator will be deleted when \e parent is deleted,
and will consume relevant key events until then.
Please note that the accelerator
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 1
can be triggered with both the 'M' key, and with Shift+M,
unless a second accelerator is defined for the Shift+M
combination.
Example:
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 2
\sa QKeyEvent QWidget::keyPressEvent()
QAbstractButton::setAccel() QLabel::setBuddy() QKeySequence
*/
struct Q3AccelItem { // internal accelerator item
Q3AccelItem(const QKeySequence &k, int i)
{ key=k; id=i; enabled=true; signal=0; }
~Q3AccelItem() { delete signal; }
int id;
QKeySequence key;
bool enabled;
Q3Signal *signal;
QString whatsthis;
};
typedef Q3PtrList<Q3AccelItem> Q3AccelList; // internal accelerator list
class Q3AccelPrivate {
public:
Q3AccelPrivate(Q3Accel* p);
~Q3AccelPrivate();
Q3AccelList aitems;
bool enabled;
QPointer<QWidget> watch;
bool ignorewhatsthis;
Q3Accel* parent;
void activate(Q3AccelItem* item);
void activateAmbiguously(Q3AccelItem* item);
};
class Q3AccelManager {
public:
static Q3AccelManager* self() { return self_ptr ? self_ptr : new Q3AccelManager; }
void registerAccel(Q3AccelPrivate* a) { accels.append(a); }
void unregisterAccel(Q3AccelPrivate* a) { accels.removeRef(a); if (accels.isEmpty()) delete this; }
bool tryAccelEvent(QWidget* w, QKeyEvent* e);
bool dispatchAccelEvent(QWidget* w, QKeyEvent* e);
bool tryComposeUnicode(QWidget* w, QKeyEvent* e);
private:
Q3AccelManager()
: currentState(QKeySequence::NoMatch), clash(-1), metaComposeUnicode(false),composedUnicode(0)
{ setFuncPtr(); self_ptr = this; }
~Q3AccelManager() { self_ptr = 0; }
void setFuncPtr();
bool correctSubWindow(QWidget *w, Q3AccelPrivate* d);
QKeySequence::SequenceMatch match(QKeyEvent* e, Q3AccelItem* item, QKeySequence& temp);
int translateModifiers(ButtonState state);
Q3PtrList<Q3AccelPrivate> accels;
static Q3AccelManager* self_ptr;
QKeySequence::SequenceMatch currentState;
QKeySequence intermediate;
int clash;
bool metaComposeUnicode;
int composedUnicode;
};
Q3AccelManager* Q3AccelManager::self_ptr = 0;
bool Q_COMPAT_EXPORT qt_tryAccelEvent(QWidget* w, QKeyEvent* e){
return Q3AccelManager::self()->tryAccelEvent(w, e);
}
bool Q_COMPAT_EXPORT qt_dispatchAccelEvent(QWidget* w, QKeyEvent* e){
return Q3AccelManager::self()->dispatchAccelEvent(w, e);
}
bool Q_COMPAT_EXPORT qt_tryComposeUnicode(QWidget* w, QKeyEvent* e){
return Q3AccelManager::self()->tryComposeUnicode(w, e);
}
void Q3AccelManager::setFuncPtr() {
if (qApp->d_func()->qt_compat_used)
return;
QApplicationPrivate *data = static_cast<QApplicationPrivate*>(qApp->d_ptr.data());
data->qt_tryAccelEvent = qt_tryAccelEvent;
data->qt_tryComposeUnicode = qt_tryComposeUnicode;
data->qt_dispatchAccelEvent = qt_dispatchAccelEvent;
data->qt_compat_used = true;
}
#ifdef Q_WS_MAC
static bool qt_accel_no_shortcuts = true;
#else
static bool qt_accel_no_shortcuts = false;
#endif
void Q_COMPAT_EXPORT qt_set_accel_auto_shortcuts(bool b) { qt_accel_no_shortcuts = b; }
/*
\internal
Returns true if the accel is in the current subwindow, else false.
*/
bool Q3AccelManager::correctSubWindow(QWidget* w, Q3AccelPrivate* d) {
#if !defined (Q_OS_MACX)
if (!d->watch || !d->watch->isVisible() || !d->watch->isEnabled())
#else
if (!d->watch || (!d->watch->isVisible() && !d->watch->inherits("QMenuBar")) || !d->watch->isEnabled())
#endif
return false;
QWidget* tlw = w->window();
QWidget* wtlw = d->watch->window();
/* if we live in a floating dock window, keep our parent's
* accelerators working */
#ifndef QT_NO_MAINWINDOW
if ((tlw->windowType() == Qt::Dialog) && tlw->parentWidget() && qobject_cast<QDockWidget*>(tlw))
return tlw->parentWidget()->window() == wtlw;
if (wtlw != tlw)
return false;
#endif
/* if we live in a MDI subwindow, ignore the event if we are
not the active document window */
QWidget* sw = d->watch;
while (sw && sw->windowType() != Qt::SubWindow)
sw = sw->parentWidget(true);
if (sw) { // we are in a subwindow indeed
QWidget* fw = w;
while (fw && fw != sw)
fw = fw->parentWidget(true);
if (fw != sw) // focus widget not in our subwindow
return false;
}
return true;
}
inline int Q3AccelManager::translateModifiers(ButtonState state)
{
int result = 0;
if (state & ShiftButton)
result |= SHIFT;
if (state & ControlButton)
result |= CTRL;
if (state & MetaButton)
result |= META;
if (state & AltButton)
result |= ALT;
return result;
}
/*
\internal
Matches the current intermediate key sequence + the latest
keyevent, with and AccelItem. Returns Identical,
PartialMatch or NoMatch, and fills \a temp with the
resulting key sequence.
*/
QKeySequence::SequenceMatch Q3AccelManager::match(QKeyEvent *e, Q3AccelItem* item, QKeySequence& temp)
{
QKeySequence::SequenceMatch result = QKeySequence::NoMatch;
int index = intermediate.count();
temp = intermediate;
int modifier = translateModifiers(e->state());
if (e->key() && e->key() != Key_unknown) {
int key = e->key() | modifier;
if (e->key() == Key_BackTab) {
/*
In QApplication, we map shift+tab to shift+backtab.
This code here reverts the mapping in a way that keeps
backtab and shift+tab accelerators working, in that
order, meaning backtab has priority.*/
key &= ~SHIFT;
temp.setKey(key, index);
if (QKeySequence::NoMatch != (result = temp.matches(item->key)))
return result;
if (e->state() & ShiftButton)
key |= SHIFT;
key = Key_Tab | (key & MODIFIER_MASK);
temp.setKey(key, index);
if (QKeySequence::NoMatch != (result = temp.matches(item->key)))
return result;
} else {
temp.setKey(key, index);
if (QKeySequence::NoMatch != (result = temp.matches(item->key)))
return result;
}
if (key == Key_BackTab) {
if (e->state() & ShiftButton)
key |= SHIFT;
temp.setKey(key, index);
if (QKeySequence::NoMatch != (result = temp.matches(item->key)))
return result;
}
}
if (!e->text().isEmpty()) {
temp.setKey((int)e->text()[0].unicode() | UNICODE_ACCEL | modifier, index);
result = temp.matches(item->key);
}
return result;
}
bool Q3AccelManager::tryAccelEvent(QWidget* w, QKeyEvent* e)
{
if (QKeySequence::NoMatch == currentState) {
e->t = QEvent::AccelOverride;
e->ignore();
QApplication::sendSpontaneousEvent(w, e);
if (e->isAccepted())
return false;
}
e->t = QEvent::Accel;
e->ignore();
QApplication::sendSpontaneousEvent(w, e);
return e->isAccepted();
}
bool Q3AccelManager::tryComposeUnicode(QWidget* w, QKeyEvent* e)
{
if (metaComposeUnicode) {
int value = e->key() - Key_0;
// Ignore acceloverrides so we don't trigger
// accels on keypad when Meta compose is on
if ((e->type() == QEvent::AccelOverride) &&
(e->state() == Qt::Keypad + Qt::MetaButton)) {
e->accept();
// Meta compose start/continue
} else if ((e->type() == QEvent::KeyPress) &&
(e->state() == Qt::Keypad + Qt::MetaButton)) {
if (value >= 0 && value <= 9) {
composedUnicode *= 10;
composedUnicode += value;
return true;
} else {
// Composing interrupted, dispatch!
if (composedUnicode) {
QChar ch(composedUnicode);
QString s(ch);
QKeyEvent kep(QEvent::KeyPress, 0, ch.row() ? 0 : ch.cell(), 0, s);
QKeyEvent ker(QEvent::KeyRelease, 0, ch.row() ? 0 : ch.cell(), 0, s);
QApplication::sendEvent(w, &kep);
QApplication::sendEvent(w, &ker);
}
composedUnicode = 0;
return true;
}
// Meta compose end, dispatch
} else if ((e->type() == QEvent::KeyRelease) &&
(e->key() == Key_Meta) &&
(composedUnicode != 0)) {
if ((composedUnicode > 0) &&
(composedUnicode < 0xFFFE)) {
QChar ch(composedUnicode);
QString s(ch);
QKeyEvent kep(QEvent::KeyPress, 0, ch.row() ? 0 : ch.cell(), 0, s);
QKeyEvent ker(QEvent::KeyRelease, 0, ch.row() ? 0 : ch.cell(), 0, s);
QApplication::sendEvent(w, &kep);
QApplication::sendEvent(w, &ker);
}
composedUnicode = 0;
return true;
}
}
return false;
}
/*
\internal
Checks for possible accelerators, if no widget
ate the keypres, or we are in the middle of a
partial key sequence.
*/
bool Q3AccelManager::dispatchAccelEvent(QWidget* w, QKeyEvent* e)
{
#ifndef QT_NO_STATUSBAR
// Needs to be declared and used here because of "goto doclash"
QStatusBar* mainStatusBar = 0;
#endif
// Modifiers can NOT be accelerators...
if (e->key() >= Key_Shift &&
e->key() <= Key_Alt)
return false;
QKeySequence::SequenceMatch result = QKeySequence::NoMatch;
QKeySequence tocheck, partial;
Q3AccelPrivate* accel = 0;
Q3AccelItem* item = 0;
Q3AccelPrivate* firstaccel = 0;
Q3AccelItem* firstitem = 0;
Q3AccelPrivate* lastaccel = 0;
Q3AccelItem* lastitem = 0;
QKeyEvent pe = *e;
int n = -1;
int hasShift = (e->state()&Qt::ShiftButton)?1:0;
bool identicalDisabled = false;
bool matchFound = false;
do {
accel = accels.first();
matchFound = false;
while (accel) {
if (correctSubWindow(w, accel)) {
if (accel->enabled) {
item = accel->aitems.last();
while(item) {
if (QKeySequence::Identical == (result = match(&pe, item, tocheck))) {
if (item->enabled) {
if (!firstaccel) {
firstaccel = accel;
firstitem = item;
}
lastaccel = accel;
lastitem = item;
n++;
matchFound = true;
if (n > QMAX(clash,0))
goto doclash;
} else {
identicalDisabled = true;
}
}
if (item->enabled && QKeySequence::PartialMatch == result) {
partial = tocheck;
matchFound = true;
}
item = accel->aitems.prev();
}
} else {
item = accel->aitems.last();
while(item) {
if (QKeySequence::Identical == match(&pe, item, tocheck))
identicalDisabled = true;
item = accel->aitems.prev();
}
}
}
accel = accels.next();
}
pe = QKeyEvent(QEvent::Accel, pe.key(), pe.ascii(), pe.state()&~Qt::ShiftButton, pe.text());
} while (hasShift-- && !matchFound && !identicalDisabled);
#ifndef QT_NO_STATUSBAR
mainStatusBar = (QStatusBar*) w->window()->child(0, "QStatusBar");
#endif
if (n < 0) { // no match found
currentState = partial.count() ? QKeySequence::PartialMatch : QKeySequence::NoMatch;
#ifndef QT_NO_STATUSBAR
// Only display message if we are, or were, in a partial match
if (mainStatusBar && (QKeySequence::PartialMatch == currentState || intermediate.count())) {
if (currentState == QKeySequence::PartialMatch) {
mainStatusBar->showMessage((QString)partial + QLatin1String(", ..."));
} else if (!identicalDisabled) {
QString message = Q3Accel::tr("%1, %2 not defined").
arg((QString)intermediate).
arg(QKeySequence::encodeString(e->key() | translateModifiers(e->state())));
mainStatusBar->showMessage(message, 2000);
// Since we're a NoMatch, reset the clash count
clash = -1;
} else {
mainStatusBar->clearMessage();
}
}
#endif
bool eatKey = (QKeySequence::PartialMatch == currentState || intermediate.count());
intermediate = partial;
if (eatKey)
e->accept();
return eatKey;
} else if (n == 0) { // found exactly one match
clash = -1; // reset
#ifndef QT_NO_STATUSBAR
if (currentState == QKeySequence::PartialMatch && mainStatusBar)
mainStatusBar->clearMessage();
#endif
currentState = QKeySequence::NoMatch; // Free sequence keylock
intermediate = QKeySequence();
lastaccel->activate(lastitem);
e->accept();
return true;
}
doclash: // found more than one match
#ifndef QT_NO_STATUSBAR
if (!mainStatusBar) // if "goto doclash", we need to get status bar again.
mainStatusBar = (QStatusBar*) w->window()->child(0, "QStatusBar");
#endif
QString message = Q3Accel::tr("Ambiguous %1 not handled").arg((QString)tocheck);
if (clash >= 0 && n > clash) { // pick next match
intermediate = QKeySequence();
currentState = QKeySequence::NoMatch; // Free sequence keylock
clash++;
#ifndef QT_NO_STATUSBAR
if (mainStatusBar &&
!lastitem->signal &&
!(lastaccel->parent->receivers(SIGNAL(activatedAmbiguously(int)))))
mainStatusBar->showMessage(message, 2000);
#endif
lastaccel->activateAmbiguously(lastitem);
} else { // start (or wrap) with the first matching
intermediate = QKeySequence();
currentState = QKeySequence::NoMatch; // Free sequence keylock
clash = 0;
#ifndef QT_NO_STATUSBAR
if (mainStatusBar &&
!firstitem->signal &&
!(firstaccel->parent->receivers(SIGNAL(activatedAmbiguously(int)))))
mainStatusBar->showMessage(message, 2000);
#endif
firstaccel->activateAmbiguously(firstitem);
}
e->accept();
return true;
}
Q3AccelPrivate::Q3AccelPrivate(Q3Accel* p)
: parent(p)
{
Q3AccelManager::self()->registerAccel(this);
aitems.setAutoDelete(true);
ignorewhatsthis = false;
}
Q3AccelPrivate::~Q3AccelPrivate()
{
Q3AccelManager::self()->unregisterAccel(this);
}
static Q3AccelItem *find_id(Q3AccelList &list, int id)
{
register Q3AccelItem *item = list.first();
while (item && item->id != id)
item = list.next();
return item;
}
static Q3AccelItem *find_key(Q3AccelList &list, const QKeySequence &key)
{
register Q3AccelItem *item = list.first();
while (item && !(item->key == key))
item = list.next();
return item;
}
/*!
Constructs a Q3Accel object called \a name, with parent \a parent.
The accelerator operates on \a parent.
*/
Q3Accel::Q3Accel(QWidget *parent, const char *name)
: QObject(parent, name)
{
d = new Q3AccelPrivate(this);
d->enabled = true;
d->watch = parent;
#if defined(QT_CHECK_NULL)
if (!d->watch)
qWarning("Q3Accel: An accelerator must have a parent or a watch widget");
#endif
}
/*!
Constructs a Q3Accel object called \a name, that operates on \a
watch, and is a child of \a parent.
This constructor is not needed for normal application programming.
*/
Q3Accel::Q3Accel(QWidget* watch, QObject *parent, const char *name)
: QObject(parent, name)
{
d = new Q3AccelPrivate(this);
d->enabled = true;
d->watch = watch;
#if defined(QT_CHECK_NULL)
if (!d->watch)
qWarning("Q3Accel: An accelerator must have a parent or a watch widget");
#endif
}
/*!
Destroys the accelerator object and frees all allocated resources.
*/
Q3Accel::~Q3Accel()
{
delete d;
}
/*!
\fn void Q3Accel::activated(int id)
This signal is emitted when the user types the shortcut's key
sequence. \a id is a number that identifies this particular
accelerator item.
\sa activatedAmbiguously()
*/
/*!
\fn void Q3Accel::activatedAmbiguously(int id)
This signal is emitted when the user types a shortcut key
sequence that is ambiguous. For example, if one key sequence is a
"prefix" for another and the user types these keys it isn't clear
if they want the shorter key sequence, or if they're about to
type more to complete the longer key sequence. \a id is a number
that identifies this particular accelerator item.
\sa activated()
*/
/*!
Returns true if the accelerator is enabled; otherwise returns
false.
\sa setEnabled(), isItemEnabled()
*/
bool Q3Accel::isEnabled() const
{
return d->enabled;
}
/*!
Enables the accelerator if \a enable is true, or disables it if \a
enable is false.
Individual keys can also be enabled or disabled using
setItemEnabled(). To work, a key must be an enabled item in an
enabled Q3Accel.
\sa isEnabled(), setItemEnabled()
*/
void Q3Accel::setEnabled(bool enable)
{
d->enabled = enable;
}
/*!
Returns the number of accelerator items in this accelerator.
*/
uint Q3Accel::count() const
{
return d->aitems.count();
}
static int get_seq_id()
{
static int seq_no = -2; // -1 is used as return value in findKey()
return seq_no--;
}
/*!
Inserts an accelerator item and returns the item's identifier.
\a key is a key code and an optional combination of SHIFT, CTRL
and ALT. \a id is the accelerator item id.
If \a id is negative, then the item will be assigned a unique
negative identifier less than -1.
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 3
*/
int Q3Accel::insertItem(const QKeySequence& key, int id)
{
if (id == -1)
id = get_seq_id();
d->aitems.insert(0, new Q3AccelItem(key,id));
return id;
}
/*!
Removes the accelerator item with the identifier \a id.
*/
void Q3Accel::removeItem(int id)
{
if (find_id(d->aitems, id))
d->aitems.remove();
}
/*!
Removes all accelerator items.
*/
void Q3Accel::clear()
{
d->aitems.clear();
}
/*!
Returns the key sequence of the accelerator item with identifier
\a id, or an invalid key sequence (0) if the id cannot be found.
*/
QKeySequence Q3Accel::key(int id)
{
Q3AccelItem *item = find_id(d->aitems, id);
return item ? item->key : QKeySequence(0);
}
/*!
Returns the identifier of the accelerator item with the key code
\a key, or -1 if the item cannot be found.
*/
int Q3Accel::findKey(const QKeySequence& key) const
{
Q3AccelItem *item = find_key(d->aitems, key);
return item ? item->id : -1;
}
/*!
Returns true if the accelerator item with the identifier \a id is
enabled. Returns false if the item is disabled or cannot be found.
\sa setItemEnabled(), isEnabled()
*/
bool Q3Accel::isItemEnabled(int id) const
{
Q3AccelItem *item = find_id(d->aitems, id);
return item ? item->enabled : false;
}
/*!
Enables the accelerator item with the identifier \a id if \a
enable is true, and disables item \a id if \a enable is false.
To work, an item must be enabled and be in an enabled Q3Accel.
\sa isItemEnabled(), isEnabled()
*/
void Q3Accel::setItemEnabled(int id, bool enable)
{
Q3AccelItem *item = find_id(d->aitems, id);
if (item)
item->enabled = enable;
}
/*!
Connects the accelerator item \a id to the slot \a member of \a
receiver. Returns true if the connection is successful.
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 4
Of course, you can also send a signal as \a member.
Normally accelerators are connected to slots which then receive
the \c activated(int id) signal with the id of the accelerator
item that was activated. If you choose to connect a specific
accelerator item using this function, the \c activated() signal is
emitted if the associated key sequence is pressed but no \c
activated(int id) signal is emitted.
\sa disconnectItem(), QObject::connect()
*/
bool Q3Accel::connectItem(int id, const QObject *receiver, const char *member)
{
Q3AccelItem *item = find_id(d->aitems, id);
if (item) {
if (!item->signal) {
item->signal = new Q3Signal;
Q_CHECK_PTR(item->signal);
}
return item->signal->connect(receiver, member);
}
return false;
}
/*!
Disconnects the accelerator item identified by \a id from
the function called \a member in the \a receiver object.
Returns true if the connection existed and the disconnect
was successful.
\sa connectItem(), QObject::disconnect()
*/
bool Q3Accel::disconnectItem(int id, const QObject *receiver,
const char *member)
{
Q3AccelItem *item = find_id(d->aitems, id);
if (item && item->signal)
return item->signal->disconnect(receiver, member);
return false;
}
void Q3AccelPrivate::activate(Q3AccelItem* item)
{
#ifndef QT_NO_WHATSTHIS
if (QWhatsThis::inWhatsThisMode() && !ignorewhatsthis) {
QWhatsThis::showText(QCursor::pos(), item->whatsthis);
return;
}
#endif
if (item->signal)
item->signal->activate();
else
emit parent->activated(item->id);
}
void Q3AccelPrivate::activateAmbiguously(Q3AccelItem* item)
{
if (item->signal)
item->signal->activate();
else
emit parent->activatedAmbiguously(item->id);
}
/*!
Returns the shortcut key sequence for \a str, or an invalid key
sequence (0) if \a str has no shortcut sequence.
For example, shortcutKey("E&xit") returns QKeySequence(Qt::ALT +
Qt::Key_X), shortcutKey("&Quit") returns QKeySequence(Qt::ALT +
Qt::Key_Q), and shortcutKey("Quit") returns QKeySequence().
*/
QKeySequence Q3Accel::shortcutKey(const QString &str)
{
if(qt_accel_no_shortcuts)
return QKeySequence();
int p = 0;
while (p >= 0) {
p = str.find(QLatin1Char('&'), p) + 1;
if (p <= 0 || p >= (int)str.length())
return 0;
if (str[p] != QLatin1Char('&')) {
QChar c = str[p];
if (c.isPrint()) {
char ltr = c.upper().latin1();
if (ltr >= (char)Key_A && ltr <= (char)Key_Z)
c = QLatin1Char(ltr);
else
c = c.lower();
return QKeySequence(c.unicode() + ALT + UNICODE_ACCEL);
}
}
p++;
}
return QKeySequence();
}
/*! \obsolete
Creates an accelerator string for the key \a k.
For instance CTRL+Key_O gives "Ctrl+O". The "Ctrl" etc.
are translated (using QObject::tr()) in the "Q3Accel" context.
The function is superfluous. Cast the QKeySequence \a k to a
QString for the same effect.
*/
QString Q3Accel::keyToString(QKeySequence k)
{
return (QString) k;
}
/*!\obsolete
Returns an accelerator code for the string \a s. For example
"Ctrl+O" gives CTRL+UNICODE_ACCEL+'O'. The strings "Ctrl",
"Shift", "Alt" are recognized, as well as their translated
equivalents in the "Q3Accel" context (using QObject::tr()). Returns 0
if \a s is not recognized.
This function is typically used with \link QObject::tr() tr
\endlink(), so that accelerator keys can be replaced in
translations:
\snippet doc/src/snippets/code/src_qt3support_other_q3accel.cpp 5
Notice the "File|Open" translator comment. It is by no means
necessary, but it provides some context for the human translator.
The function is superfluous. Construct a QKeySequence from the
string \a s for the same effect.
\sa QObject::tr(), {Internationalization with Qt}
*/
QKeySequence Q3Accel::stringToKey(const QString & s)
{
return QKeySequence(s);
}
/*!
Sets a What's This help text for the accelerator item \a id to \a
text.
The text will be shown when the application is in What's This mode
and the user hits the accelerator key.
To set What's This help on a menu item (with or without an
accelerator key), use Q3MenuData::setWhatsThis().
\sa whatsThis(), QWhatsThis::inWhatsThisMode(), QAction::setWhatsThis()
*/
void Q3Accel::setWhatsThis(int id, const QString& text)
{
Q3AccelItem *item = find_id(d->aitems, id);
if (item)
item->whatsthis = text;
}
/*!
Returns the What's This help text for the specified item \a id or
an empty string if no text has been specified.
\sa setWhatsThis()
*/
QString Q3Accel::whatsThis(int id) const
{
Q3AccelItem *item = find_id(d->aitems, id);
return item? item->whatsthis : QString();
}
/*!\internal */
void Q3Accel::setIgnoreWhatsThis(bool b)
{
d->ignorewhatsthis = b;
}
/*!\internal */
bool Q3Accel::ignoreWhatsThis() const
{
return d->ignorewhatsthis;
}
/*!
\fn void Q3Accel::repairEventFilter()
\internal
*/
QT_END_NAMESPACE