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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qnsview.h"
#include "qcocoainputcontext.h"
#include "qcocoanativeinterface.h"
#include "qcocoawindow.h"
#include <Carbon/Carbon.h>
#include <QtCore/QRect>
#include <QtGui/QGuiApplication>
#include <QtGui/QWindow>
QT_BEGIN_NAMESPACE
/*!
\class QCocoaInputContext
\brief Cocoa Input context implementation
Handles input of foreign characters (particularly East Asian)
languages.
\section1 Testing
\list
\o Select input sources like 'Kotoeri' in Language & Text Preferences
\o Compile the \a mainwindows/mdi example and open a text window.
\o In the language bar, switch to 'Hiragana'.
\o In a text editor control, type the syllable \a 'la'.
Underlined characters show up, indicating that there is completion
available. Press the Space key two times. A completion popup occurs
which shows the options.
\endlist
\section1 Interaction
Input method support in Cocoa uses NSTextInput protorol. Therefore
almost all functionality is implemented in QNSView.
\ingroup qt-lighthouse-cocoa
*/
QCocoaInputContext::QCocoaInputContext()
: QPlatformInputContext()
, mWindow(QGuiApplication::focusWindow())
{
QMetaObject::invokeMethod(this, "connectSignals", Qt::QueuedConnection);
updateLocale();
}
QCocoaInputContext::~QCocoaInputContext()
{
}
/*!
\brief Cancels a composition.
*/
void QCocoaInputContext::reset()
{
QPlatformInputContext::reset();
if (!mWindow)
return;
QNSView *view = static_cast<QCocoaWindow *>(mWindow->handle())->qtView();
if (!view)
return;
QMacAutoReleasePool pool;
if (NSTextInputContext *ctxt = [NSTextInputContext currentInputContext]) {
[ctxt discardMarkedText];
[view unmarkText];
}
}
void QCocoaInputContext::connectSignals()
{
connect(qApp, SIGNAL(focusObjectChanged(QObject*)), this, SLOT(focusObjectChanged(QObject*)));
focusObjectChanged(qApp->focusObject());
}
void QCocoaInputContext::focusObjectChanged(QObject *focusObject)
{
Q_UNUSED(focusObject);
mWindow = QGuiApplication::focusWindow();
}
void QCocoaInputContext::updateLocale()
{
TISInputSourceRef source = TISCopyCurrentKeyboardInputSource();
CFArrayRef languages = (CFArrayRef) TISGetInputSourceProperty(source, kTISPropertyInputSourceLanguages);
if (CFArrayGetCount(languages) > 0) {
CFStringRef langRef = (CFStringRef)CFArrayGetValueAtIndex(languages, 0);
QString name = QCFString::toQString(langRef);
QLocale locale(name);
if (m_locale != locale) {
m_locale = locale;
emitLocaleChanged();
}
CFRelease(langRef);
}
}
QT_END_NAMESPACE
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