Add support for BB10 input method framework

Added input method support for the BB10 variant of Qt to the extent
possible using standard Qt APIs.  This adds support for text predictions
and entry of languages such as Chinese.

Change in interface to QQnxAbstractVirtualKeyboard was made because it
is felt the new one is slightly nicer.  It doesn't appear safe to
assume the focus object has a particular property and in fact in my tests
the code failed to work.

In some cases the code uses variable and function naming at odds with
normal Qt coding standards.  This has been done for functions called
and data provided by the BB10 input system as for those of us who
need to maintain such things, it makes their meaning considerably
clearer.

While qqnxinputcontext_imf.cpp was used as an initial base for
development one can consider the new version as largely new code. I
don't believe the original version was ever complete and in any event
would not compile.

Change-Id: I09470801ffa237cee67da40c0b3d02ed5c77531e
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/src/plugins/platforms/qnx/qqnxscreeneventfilter.h b/src/plugins/platforms/qnx/qqnxscreeneventfilter.h
new file mode 100644
index 0000000000..f9ecadd2a9
--- /dev/null
+++ b/src/plugins/platforms/qnx/qqnxscreeneventfilter.h
@@ -0,0 +1,58 @@
+/***************************************************************************
+**
+** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQNXSCREENEVENTFILTER_H
+#define QQNXSCREENEVENTFILTER_H
+
+QT_BEGIN_NAMESPACE
+
+class QQnxScreenEventFilter
+{
+protected:
+    ~QQnxScreenEventFilter() {}
+
+public:
+    virtual bool handleKeyboardEvent(int flags, int sym, int mod, int scan, int cap, int sequenceId) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif