qkeymapper.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
 
#include "qguiapplication.h"
 
#include <private/qobject_p.h>
#include "qkeymapper_p.h"
 
#include <private/qguiapplication_p.h>
#include <qpa/qplatformintegration.h>
 
QT_BEGIN_NAMESPACE
 
QKeyMapper::QKeyMapper()
    : QObject(*new QKeyMapperPrivate, nullptr)
{
}
 
QKeyMapper::~QKeyMapper()
{
}
 
static QList<int> extractKeyFromEvent(QKeyEvent *e)
{
    QList<int> result;
    if (e->key() && (e->key() != Qt::Key_unknown))
        result << e->keyCombination().toCombined();
    else if (!e->text().isEmpty())
        result << int(e->text().at(0).unicode() + (int)e->modifiers());
    return result;
}
 
QList<int> QKeyMapper::possibleKeys(QKeyEvent *e)
{
    return instance()->d_func()->possibleKeys(e);
}
 
extern bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event); // in qapplication_*.cpp
void QKeyMapper::changeKeyboard()
{
    // ## TODO: Support KeyboardLayoutChange on QPA
#if 0
    // inform all toplevel widgets of the change
    QEvent e(QEvent::KeyboardLayoutChange);
    QWidgetList list = QApplication::topLevelWidgets();
    for (int i = 0; i < list.size(); ++i) {
        QWidget *w = list.at(i);
        qt_sendSpontaneousEvent(w, &e);
    }
#endif
}
 
Q_GLOBAL_STATIC(QKeyMapper, keymapper)
QKeyMapper *QKeyMapper::instance()
{
    return keymapper();
}
 
QKeyMapperPrivate *qt_keymapper_private()
{
    return QKeyMapper::instance()->d_func();
}
 
QKeyMapperPrivate::QKeyMapperPrivate()
{
    keyboardInputLocale = QLocale::system();
    keyboardInputDirection = keyboardInputLocale.textDirection();
}
 
QKeyMapperPrivate::~QKeyMapperPrivate()
{
}
 
QList<int> QKeyMapperPrivate::possibleKeys(QKeyEvent *e)
{
    QList<int> result = QGuiApplicationPrivate::platformIntegration()->possibleKeys(e);
    if (!result.isEmpty())
        return result;
 
    return extractKeyFromEvent(e);
}
 
void *QKeyMapper::resolveInterface(const char *name, int revision) const
{
    Q_UNUSED(name); Q_UNUSED(revision);
    using namespace QNativeInterface::Private;
 
#if QT_CONFIG(evdev)
    QT_NATIVE_INTERFACE_RETURN_IF(QEvdevKeyMapper, QGuiApplicationPrivate::platformIntegration());
#endif
 
    return nullptr;
}
 
QT_END_NAMESPACE
 
#include "moc_qkeymapper_p.cpp"