ADD: two new cluster scene plugins, from qtws2017 demo, which designed by Qt3DStudio.

Modify: Finish cluster code. Test in x64 linux. Modify READNE.md

InstrumentCluster/Main.qml

+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Scene Changing Framework Demo.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.8
+import QtQuick.Window 2.2
+
+Window {
+    id: base_root
+    visible: true
+    width: 1920
+    height: 720
+
+    color: "grey"
+
+    Loader {
+        id: base_content
+        anchors.fill: parent
+        source: sceneManager.currentScene.entryPath
+
+        Connections {
+            target: sceneManager
+            onCurrentSceneChanged: {
+                base_content.setSource( sceneManager.currentScene.entryPath );
+            }
+        }
+    }
+
+    SceneSelector {
+        id: sceneSelector
+        x: 100
+        y: 100
+        width: parent.width / 3
+        height: parent.height / 1.5
+    }
+}

InstrumentCluster/SceneSelector.qml

+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Scene Changing Framework Demo.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.8
+
+ListView {
+    id: root
+    model: sceneManager.sceneList
+
+    opacity: 0
+    clip: true
+    focus: true
+    highlightRangeMode: ListView.StrictlyEnforceRange
+    preferredHighlightBegin: height / 3
+    preferredHighlightEnd: height / 3
+
+    highlight: Rectangle {
+        width: parent.width
+        color: "steelblue";
+        opacity: 0.7
+    }
+
+    delegate: Rectangle {
+        id: selectorItem
+        color: sceneManager.currentSceneNumber === index ? "green" : "transparent"
+        opacity: root.currentIndex === index ? 1 : 0.5
+        width: root.width
+        height: root.currentIndex === index ? root.height / 3 : root.height / 6
+        clip: true
+
+        Image {
+            anchors.right: parent.right
+            width: parent.width / 1.5
+            height: parent.height * 0.8
+            anchors.verticalCenter: parent.verticalCenter
+            fillMode: Image.PreserveAspectFit
+            source: "image://sceneManager/" + index
+        }
+
+        Text {
+            color: "white"
+            font.pixelSize: parent.height / 5
+            anchors.left: parent.left
+            text: sceneManager.sceneList[index].name
+        }
+
+        Behavior on height {
+            NumberAnimation {
+                easing.type: Easing.OutCirc; duration: 1000 }
+        }
+    }
+
+    Timer {
+        id: selectorFadeTimer
+        running: false
+        interval: 5000
+        onTriggered: {
+            selectorFadeAnimator.start();
+        }
+    }
+
+    PropertyAnimation {
+        id: selectorFadeAnimator
+        target: root
+        property: "opacity"
+        from: 1;
+        to: 0;
+        duration: 2000
+    }
+
+    Keys.onPressed: {
+        if (event.key == Qt.Key_Up) {
+            root.opacity = 1
+            selectorFadeTimer.restart()
+            if (currentIndex > 0)
+                currentIndex = currentIndex -1;
+            event.accepted = true;
+        } else if (event.key == Qt.Key_Down) {
+            root.opacity = 1
+            selectorFadeTimer.restart()
+            if (currentIndex < (count -1))
+                currentIndex ++;
+            event.accepted = true;
+        } else if (event.key == Qt.Key_Space || event.key == Qt.Key_Enter) {
+            root.opacity = 1
+            selectorFadeTimer.restart()
+            sceneManager.setScene(currentIndex);
+            event.accepted = true;
+        }
+    }
+}

InstrumentCluster/main.cpp

+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Scene Changing Framework Demo.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
+#include <QFontDatabase>
 #include "scenemanager.h"
 
 int main(int argc, char *argv[])
 {
-    qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
-
     QGuiApplication app(argc, argv);
 
     QQmlApplicationEngine engine;
 
+    //scene manager
     SceneManager* cm = new SceneManager(&engine);
 
-    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
+    //for qt 3d studio scene plugins
+    engine.addImportPath(QStringLiteral("/home/linbin/QtPlayground/QtGit/qt3dstudio/qml"));
+
+    //qt demo default fonts
+    QFontDatabase::addApplicationFont("qrc:/fonts/TitilliumWeb-SemiBold.ttf");
+    QFont defaultFont;
+    defaultFont.setFamily("Titillium Web");
+    QGuiApplication::setFont(defaultFont);
+
+    engine.load(QUrl(QStringLiteral("qrc:/Main.qml")));
     if (engine.rootObjects().isEmpty())
         return -1;
 

InstrumentCluster/main.qml

-import QtQuick 2.8
-import QtQuick.Window 2.2
-import QtQuick.VirtualKeyboard 2.1
-
-Window {
-    id: root
-    visible: true
-    width: 640
-    height: 480
-    title: qsTr("Hello World")
-
-    color: "grey"
-
-    Loader {
-        id: content
-        anchors.fill: parent
-
-    }
-
-    Item {
-        id: s
-        property int sceneNumber: 0
-        property int sceneCounts: 0
-
-        Connections {
-            target: sceneManager
-            onSceneListChanged: {
-                s.sceneCounts = sceneManager.sceneList.size();
-                s.sceneNumber = 0
-            }
-        }
-
-        function selectScene(number) {
-            if (number < 0 || number > s.sceneCounts) return;
-            s.sceneNumber = number;
-            content.setSource( sceneManager.sceneList.at(number).entryPath );
-        }
-    }
-
-    ListView {
-        id: sceneSelector
-        x: 0
-        y: 0
-        width: parent.width / 3
-        height: parent.height / 1.5
-        model: sceneManager.sceneList
-        delegate: Rectangle {
-            width: sceneSelector.width
-            height: sceneSelector.height / 3
-            Text {
-                text: sceneManager.sceneList[index].name
-            }
-            Image {
-                source: "image://sceneManager/" + index
-            }
-        }
-
-    }
-}

InstrumentCluster/qml.qrc

-<!DOCTYPE RCC>
-<RCC version="1.0">
+<RCC>
     <qresource prefix="/">
-        <file>main.qml</file>
+        <file>Main.qml</file>
+        <file>SceneSelector.qml</file>
+        <file>fonts/TitilliumWeb-SemiBold.ttf</file>
+        <file>main.cpp</file>
+        <file>sceneinfo.cpp</file>
+        <file>sceneinfo.h</file>
+        <file>scenemanager.cpp</file>
+        <file>scenemanager.h</file>
     </qresource>
 </RCC>

InstrumentCluster/sceneinfo.cpp

+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Scene Changing Framework Demo.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
 #include "sceneinfo.h"
 #include <QDebug>
 
-SceneInfo::SceneInfo(QObject *parent) : QObject(parent), _pSnapShot(nullptr) {
-
-
+SceneInfo::SceneInfo(QObject *parent) :
+    QObject(parent), _pSnapShot(nullptr), _pLoader(nullptr)
+{
+    init();
 }
 
 SceneInfo::~SceneInfo(void) {
+    init();
+}
+
+bool SceneInfo::init(void) {
     unload();
+    if (_pLoader) {
+        _pLoader->deleteLater();
+        _pLoader = nullptr;
+    }
+
+    _version = 0;
+    _name = QString();
+    _entryPath = QString();
+    delete _pSnapShot;
+    emit propertyChanged();
+    return true;
 }
 
-bool SceneInfo::loadFile(const QString& filePath) {
+bool SceneInfo::init(const QString& filePath) {
     if (QLibrary::isLibrary(filePath)) {
-        QPluginLoader* newLoader = new QPluginLoader(filePath);
-        const QJsonObject meta = newLoader->metaData();
-
-        if (meta["MetaData"]["type"].toString(QString()) == QString("scenePlugin") &&
-            meta["MetaData"]["version"].toInt(0) > 0 &&
-            meta["MetaData"]["name"].toString(QString()) != _name) {
-            iPlugin *plugin = qobject_cast<iPlugin*>(newLoader->instance());
+        QPluginLoader* pNewLoader = new QPluginLoader(filePath);
+        const QJsonValue& meta = pNewLoader->metaData()["MetaData"];
+        if (meta["type"].toString(QString()) == QString("scenePlugin") &&
+            meta["version"].toString(QString()).toInt() > 0 &&
+            meta["name"].toString(QString()) != _name) {
+            iPlugin *plugin = qobject_cast<iPlugin*>(pNewLoader->instance());
             if (plugin) {
                 //success
-                unload();
-                _version = meta["MetaData"]["version"].toInt(0);
-                _name = meta["MetaData"]["name"].toString(QString());
-                _entryPath = meta["MetaData"]["entryPath"].toString(QString());
-                _pLoader = newLoader;
-                _pSnapShot = plugin->snapShot();
+                init();
+                _version = meta["version"].toInt(0);
+                _name = meta["name"].toString(QString());
+                _entryPath = meta["entryPath"].toString(QString());
+                QString snapShotPath = meta["snapShot"].toString(QString());
+                snapShotPath = snapShotPath.right(snapShotPath.length()-3);
+                _pSnapShot = new QImage(snapShotPath, "PNG");
+                _pLoader = pNewLoader;
                 emit propertyChanged();
-                plugin->deleteLater();
+                pNewLoader->unload();
                 return true;
             }
         }
-        newLoader->deleteLater();
+        if(pNewLoader->isLoaded())
+            pNewLoader->unload();
+        pNewLoader->deleteLater();
     }
     //failed
     return false;
 }
 
-void SceneInfo::unload(void) {
-    if (!_pLoader) {
-        _pLoader->deleteLater();
-        _pLoader = nullptr;
+bool SceneInfo::load(void) {
+    bool ret =false;
+    if (_pLoader) {
+        if (!_pLoader->isLoaded())
+            ret = _pLoader->instance();
     }
-
-    _version = 0;
-    _name = QString();
-    _entryPath = QString();
-    _pSnapShot.clear();
-    emit propertyChanged();
+    return ret;
 }
 
-QPluginLoader* SceneInfo::loader(void) {
-    return _pLoader;
+bool SceneInfo::unload(void) {
+    bool ret =false;
+    if (_pLoader) {
+        if (_pLoader->isLoaded())
+            ret = _pLoader->unload();
+    }
+    return ret;
 }
 
-QSharedPointer<QImage> SceneInfo::snapShot(void) {
+QImage* SceneInfo::snapShot(void) {
     return _pSnapShot;
 }

InstrumentCluster/sceneinfo.h

+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Scene Changing Framework Demo.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
 #ifndef SCENEINFO_H
 #define SCENEINFO_H
 
@@ -16,17 +66,18 @@ public:
     explicit SceneInfo(QObject *parent = nullptr);
     virtual ~SceneInfo(void);
 
-    bool loadFile(const QString& filePath);
-    void unload(void);
-    QPluginLoader* loader(void);
-    QSharedPointer<QImage> snapShot(void);
+    bool init(void);
+    bool init(const QString& filePath);
+    bool load(void);
+    bool unload(void);
+    QImage *snapShot(void);
 
 private:
     QString _name;
     int _version;
     QString _entryPath;
 
-    QSharedPointer<QImage> _pSnapShot;
+    QImage* _pSnapShot;