Add multipoint touch support for Harmattan to the xcb platform plugin.

Proper multipoint touch support was only introduced in XInput2.1, but Harmattan uses
a tweaked version of XInput2.0 that transfers touch data through mouse events.

This patch applies on the xcb plugin a subset of the changes that were applied on the
Qt 4.7 that was shipped to Harmattan to get similar multipoint touch support.

Change-Id: Ifda7ad40de29d7ded1443d4f78b3ec3807303a9f
Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>

2 files changed, 79 insertions, 0 deletions

diff --git a/config.tests/x11/xinput2/xinput2.cpp b/config.tests/x11/xinput2/xinput2.cpp
new file mode 100644
index 0000000000..14a51f4d28
--- /dev/null
+++ b/config.tests/x11/xinput2/xinput2.cpp
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <X11/Xlib.h>
+#include <X11/extensions/XInput2.h>
+#include <X11/extensions/Xge.h>
+
+#ifndef XInput_2_0
+#  error "Missing XInput_2_0 #define"
+#endif
+
+int main(int, char **)
+{
+    // need XGenericEventCookie for XInput2 to work
+    Display *dpy = 0;
+    XEvent xevent;
+    if (XGetEventData(dpy, &xevent.xcookie)) {
+        XFreeEventData(dpy, &xevent.xcookie);
+    }
+
+    XIEvent *xievent;
+    xievent = 0;
+
+    XIDeviceEvent *xideviceevent;
+    xideviceevent = 0;
+
+    XIHierarchyEvent *xihierarchyevent;
+    xihierarchyevent = 0;
+
+    int deviceid = 0;
+    int len = 0;
+    Atom *atoms = XIListProperties(dpy, deviceid, &len);
+    if (atoms)
+        XFree(atoms);
+
+    return 0;
+}
diff --git a/config.tests/x11/xinput2/xinput2.pro b/config.tests/x11/xinput2/xinput2.pro
new file mode 100644
index 0000000000..ae8819b3d1
--- /dev/null
+++ b/config.tests/x11/xinput2/xinput2.pro
@@ -0,0 +1,4 @@
+CONFIG += x11
+CONFIG -= qt
+LIBS += -lXi
+SOURCES = xinput2.cpp