Added utility files related three.js

Added 3rd party three.js and QML ControlEventSource.

Change-Id: I4d14df0a1cf9d36f2e206cf4eef1b9d3598bb61b
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>

examples/threejs/controls/ControlEventSource.qml

+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtCanvas3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+// Helper class that makes QtQuick mouse and keyboard events more easier to handle in
+// HTML compatible manner
+Item {
+    id: ctrlEventSource
+
+    property alias cursorShape: inputArea.cursorShape
+
+    signal mouseMove(int x, int y);
+    signal mouseDown(int x, int y, int buttons);
+    signal mouseUp(int x, int y);
+    signal mouseWheel(int x, int y);
+    signal mouseIn();
+    signal mouseOut();
+
+    signal keyDown(var event);
+    signal keyUp(var event);
+
+    function addEventListener(event, handler, ignored)
+    {
+        if (event === 'keydown') {
+            ctrlEventSource.keyDown.connect(handler);
+        } else if (event === 'keyup') {
+            ctrlEventSource.keyUp.connect(handler);
+        } else if (event === 'mousedown') {
+            ctrlEventSource.mouseDown.connect(handler);
+        } else if (event === 'mouseup') {
+            ctrlEventSource.mouseUp.connect(handler);
+        } else if (event === 'mousemove') {
+            ctrlEventSource.mouseMove.connect(handler);
+        } else if (event === 'mousewheel') {
+            ctrlEventSource.mouseWheel.connect(handler);
+        } else if (event === 'mouseout') {
+            ctrlEventSource.mouseOut.connect(handler);
+        } else if (event === 'mouseout') {
+            ctrlEventSource.mouseIn.connect(handler);
+        } else if (event === 'touchstart') {
+        } else if (event === 'touchmove') {
+        } else if (event === 'touchend') {
+        }
+    }
+
+    function removeEventListener(event, handler, ignored)
+    {
+        if (event === 'keydown') {
+            ctrlEventSource.keyDown.disconnect(handler);
+        } else if (event === 'keyup') {
+            ctrlEventSource.keyUp.disconnect(handler);
+        } else if (event === 'mousedown') {
+            ctrlEventSource.mouseDown.disconnect(handler);
+        } else if (event === 'mouseup') {
+            ctrlEventSource.mouseUp.disconnect(handler);
+        } else if (event === 'mousemove') {
+            ctrlEventSource.mouseMove.disconnect(handler);
+        } else if (event === 'mousewheel') {
+            ctrlEventSource.mouseWheel.disconnect(handler);
+        } else if (event === 'mouseout') {
+            ctrlEventSource.mouseOut.disconnect(handler);
+        } else if (event === 'mouseout') {
+            ctrlEventSource.mouseIn.disconnect(handler);
+        } else if (event === 'touchstart') {
+        } else if (event === 'touchmove') {
+        } else if (event === 'touchend') {
+        }
+    }
+
+    MouseArea {
+        id: inputArea
+        anchors.fill: parent
+        hoverEnabled: true
+
+        onPositionChanged: {
+            ctrlEventSource.mouseMove(mouse.x, mouse.y);
+        }
+
+        onPressed: {
+            ctrlEventSource.mouseDown(mouse.x, mouse.y, mouse.buttons);
+        }
+
+        onReleased: {
+            ctrlEventSource.mouseUp(mouse.x, mouse.y);
+        }
+
+        onWheel: {
+            ctrlEventSource.mouseWheel(wheel.angleDelta.x, wheel.angleDelta.y);
+        }
+
+        onEntered: {
+            ctrlEventSource.mouseIn();
+        }
+
+        onExited: {
+            ctrlEventSource.mouseOut();
+        }
+    }
+
+    Keys.onPressed: {
+        ctrlEventSource.keyDown(event);
+    }
+
+    Keys.onReleased: {
+        ctrlEventSource.keyUp(event);
+    }
+}
+