Long live the TuioTouch input plugin!

This is an import of the tuio2qt plugin (https://github.com/rburchell/tuio2qt),
as of sha 9b1f163ac52ea440e83f16b3906f9b55e21b87be henceforth to be developed as
a part of Qt itself.

This plugin offers touch events via QPA interfaces, using data offered over the
TUIO protocol (http://www.tuio.org).

It is useful for accepting touch input on devices which otherwise don't have
touch input (such as desktops) for the purposes of development, as well as
accepting input from some hardware which offers up touch events specifically
over the TUIO protocol.

Known "shortcomings" at this time, as documented in the README:
 * Multiple TUIO sources sending data at the same time will conflict. This will
   not cause problems, strictly speaking, but it will not work well (repeated
   touchpoint release/press events for the same IDs)
 * TCP transport is not currently supported. I don't see a need for it at this
   time, but I have left the capability in terms of port acceptance open for it
   to be made available.

Change-Id: I7178f9db13c635268db8460fbe4d4ea6be654c05
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/plugins/generic/tuiotouch/qtuio_p.h b/src/plugins/generic/tuiotouch/qtuio_p.h
new file mode 100644
index 0000000000..ac8e5a128c
--- /dev/null
+++ b/src/plugins/generic/tuiotouch/qtuio_p.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Robin Burchell <robin.burchell@viroteck.net>
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtCore module 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 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 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.
+**
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTUIO_P_H
+#define QTUIO_P_H
+
+QT_BEGIN_NAMESPACE
+
+inline bool qt_readOscString(const QByteArray &source, QByteArray &dest, quint32 &pos)
+{
+    int end = source.indexOf('\0', pos);
+    if (end < 0) {
+        pos = source.size();
+        dest = QByteArray();
+        return false;
+    }
+
+    dest = source.mid(pos, end - pos);
+
+    // Skip additional NULL bytes at the end of the string to make sure the
+    // total number of bits a multiple of 32 bits ("OSC-string" in the
+    // specification).
+    end += 4 - ((end - pos) % 4);
+
+    pos = end;
+    return true;
+}
+
+QT_END_NAMESPACE
+
+#endif