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C++ QQmlEngine::rootContext方法代码示例

本文整理汇总了C++中QQmlEngine::rootContext方法的典型用法代码示例。如果您正苦于以下问题：C++ QQmlEngine::rootContext方法的具体用法？C++ QQmlEngine::rootContext怎么用？C++ QQmlEngine::rootContext使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QQmlEngine的用法示例。


在下文中一共展示了QQmlEngine::rootContext方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: contextForObject

void tst_qqmlengine::contextForObject()
{
    QQmlEngine *engine = new QQmlEngine;

    // Test null-object
    QVERIFY(!QQmlEngine::contextForObject(0));

    // Test an object with no context
    QObject object;
    QVERIFY(!QQmlEngine::contextForObject(&object));

    // Test setting null-object
    QQmlEngine::setContextForObject(0, engine->rootContext());

    // Test setting null-context
    QQmlEngine::setContextForObject(&object, 0);

    // Test setting context
    QQmlEngine::setContextForObject(&object, engine->rootContext());
    QCOMPARE(QQmlEngine::contextForObject(&object), engine->rootContext());

    QQmlContext context(engine->rootContext());

    // Try changing context
    QTest::ignoreMessage(QtWarningMsg, "QQmlEngine::setContextForObject(): Object already has a QQmlContext");
    QQmlEngine::setContextForObject(&object, &context);
    QCOMPARE(QQmlEngine::contextForObject(&object), engine->rootContext());

    // Delete context
    delete engine; engine = 0;
    QVERIFY(!QQmlEngine::contextForObject(&object));
}
开发者ID:2gis，项目名称:2gisqt5android，代码行数:32，代码来源:tst_qqmlengine.cpp

示例2: rootContext

void tst_qqmlengine::rootContext()
{
    QQmlEngine engine;

    QVERIFY(engine.rootContext());

    QCOMPARE(engine.rootContext()->engine(), &engine);
    QVERIFY(!engine.rootContext()->parentContext());
}
开发者ID:2gis，项目名称:2gisqt5android，代码行数:9，代码来源:tst_qqmlengine.cpp

示例3: main

int main(int argc, char* argv[])
{
	QGuiApplication app(argc, argv);

	// Use QCommandLineParser to parse arguments (see documentation)

	QQmlEngine engine;

	// Register needed types
	registerQmlTypes();

	// Add image provider
	engine.addImageProvider(QStringLiteral("svgelement"), new qtouch::SvgElementProvider(QQmlImageProviderBase::Image,
	                        QUrl(QStringLiteral("qrc:///images/"))));

	qtouch::DataModel dataModel;
	try
	{
		dataModel.init();
	}
	catch (qtouch::Exception& e)
	{
		qCritical() << e.message();
		return EXIT_FAILURE;
	}

	qtouch::CourseModel* courseModel = new qtouch::CourseModel(&dataModel, &app);
	qtouch::ProfileModel* profileModel = new qtouch::ProfileModel(&dataModel, &app);
	// Embed view models
	engine.rootContext()->setContextProperty("$courseModel", courseModel);
	engine.rootContext()->setContextProperty("$profileModel", profileModel);

	// Create root component
	QQmlComponent component(&engine);
	QQuickWindow::setDefaultAlphaBuffer(true);
	component.loadUrl(QUrl(QStringLiteral("qrc:/qml/MainWindow.qml")));

	if (componentError(&component))
		return EXIT_FAILURE;

	if (component.isReady())
	{
		component.create();
		if (componentError(&component))
			return EXIT_FAILURE;
	}
	else
	{
		qWarning() << component.errorString();
		return EXIT_FAILURE;
	}

	// FIXME: Not nice but fixes initialization problem
	courseModel->selectCourse(0);

	return app.exec();
}
开发者ID:mNisblee，项目名称:QTouch，代码行数:57，代码来源:main.cpp

示例4: syntaxError

// QTBUG-21310 - crash test
void tst_qqmlexpression::syntaxError()
{
    QQmlEngine engine;
    QQmlExpression expression(engine.rootContext(), 0, "asd asd");
    QVariant v = expression.evaluate();
    QCOMPARE(v, QVariant());
}
开发者ID:SamuelNevala，项目名称:qtdeclarative，代码行数:8，代码来源:tst_qqmlexpression.cpp

示例5: controlledWrite

void tst_QQmlPropertyMap::controlledWrite()
{
    MyPropertyMap map;
    QCOMPARE(map.isEmpty(), true);

    //make changes in QML
    QQmlEngine engine;
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty(QLatin1String("testdata"), &map);

    const char *qmlSource =
        "import QtQuick 2.0\n"
        "Item { Component.onCompleted: { testdata.key1 = 'Hello World'; testdata.key2 = 'Goodbye' } }";

    QQmlComponent component(&engine);
    component.setData(qmlSource, QUrl::fromLocalFile(""));
    QVERIFY(component.isReady());

    QObject *obj = component.create();
    QVERIFY(obj);
    delete obj;

    QCOMPARE(map.value(QLatin1String("key1")), QVariant("HELLO WORLD"));
    QCOMPARE(map.value(QLatin1String("key2")), QVariant("Goodbye"));
}
开发者ID:ghjinlei，项目名称:qt5，代码行数:25，代码来源:tst_qqmlpropertymap.cpp

示例6: changed

void tst_QQmlPropertyMap::changed()
{
    QQmlPropertyMap map;
    QSignalSpy spy(&map, SIGNAL(valueChanged(const QString&, const QVariant&)));
    map.insert(QLatin1String("key1"),100);
    map.insert(QLatin1String("key2"),200);
    QCOMPARE(spy.count(), 0);

    map.clear(QLatin1String("key1"));
    QCOMPARE(spy.count(), 0);

    //make changes in QML
    QQmlEngine engine;
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty(QLatin1String("testdata"), &map);
    QQmlComponent component(&engine);
    component.setData("import QtQuick 2.0\nText { text: { testdata.key1 = 'Hello World'; 'X' } }",
            QUrl::fromLocalFile(""));
    QVERIFY(component.isReady());
    QQuickText *txt = qobject_cast<QQuickText*>(component.create());
    QVERIFY(txt);
    QCOMPARE(txt->text(), QString('X'));
    QCOMPARE(spy.count(), 1);
    QList<QVariant> arguments = spy.takeFirst();
    QCOMPARE(arguments.count(), 2);
    QCOMPARE(arguments.at(0).toString(),QLatin1String("key1"));
    QCOMPARE(arguments.at(1).value<QVariant>(),QVariant("Hello World"));
    QCOMPARE(map.value(QLatin1String("key1")), QVariant("Hello World"));
}
开发者ID:ghjinlei，项目名称:qt5，代码行数:29，代码来源:tst_qqmlpropertymap.cpp

示例7: main

int main(int argc, char **argv)
{
  QApplication app(argc, argv);

  const QUrl documentUrl = QUrl("qrc:///main.qml");

  QQmlEngine engine;
#ifdef Q_OS_MACOS
  engine.addImportPath(QStringLiteral("%1/../PlugIns").arg(QCoreApplication::applicationDirPath()));
#else
  engine.addImportPath(PLUGIN_IMPORT_PATH);
#endif
  Editor editor;
  engine.rootContext()->setContextProperty("_editor", &editor);
  QObject::connect(&engine, &QQmlEngine::quit, QCoreApplication::instance(), &QCoreApplication::quit);

  QQmlComponent component(&engine, documentUrl);
  QWidget *widget = qobject_cast<QWidget*>(component.create());
  if (!widget)
    qFatal("Failed to create widget from QML");
    
  widget->show();

  return app.exec();
}
开发者ID:KDAB，项目名称:DeclarativeWidgets，代码行数:25，代码来源:main.cpp

示例8: engineSetContextForObject

void engineSetContextForObject(QQmlEngine_ *engine, QObject_ *object)
{
    QQmlEngine *qengine = reinterpret_cast<QQmlEngine *>(engine);
    QObject *qobject = reinterpret_cast<QObject *>(object);

    QQmlEngine::setContextForObject(qobject, qengine->rootContext());
}
开发者ID:chai2010，项目名称:qml，代码行数:7，代码来源:goqml.cpp

示例9: TEST_FILE

void TestSimpleQmlLoad::compileAndLoadSignal2()
{
    const QString TEST_FILE(":/testqml/testsignal2.qml");

    QQmlEngine *engine = new QQmlEngine;
    QQmlComponent* component = compileAndLoad(engine, TEST_FILE);
    QVERIFY(component);

    SignalTester st;

    engine->rootContext()->setContextProperty("st", &st);

    QObject *myObject = component->create();
    QVERIFY(myObject != NULL);

    QVariant var = myObject->property("sigReceived");
    QVERIFY(!var.isNull());
    QVERIFY(var.toBool() == false);

    st.sendSig();
    var = myObject->property("sigReceived");
    QVERIFY(!var.isNull());
    QVERIFY(var.toBool() == true);

    delete component;
    delete engine;
}
开发者ID:RichardsATcn，项目名称:qmlc，代码行数:27，代码来源:testsimpleqmlload.cpp

示例10: main

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QQmlEngine engine;
    QMLBattleStationContext* context = new QMLBattleStationContext();
    engine.rootContext()->setContextProperty(QString("context"), context);
    QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/main.qml")));
    component.create();
    //  Init/create subsystems
    if (SDL_Init(SDL_INIT_JOYSTICK)) {
        QString* err = new QString(SDL_GetError());
        qWarning() << LOG_ERROR << "SDL init error:" << err;
        //  TODO UI notification
    } else {
        qDebug() << LOG_OK << "SDL init";
    }
    Serial* serial = new Serial();
    InputHandler* inputHandler = new InputHandler();

    //  Connect Serial and BSC
    QObject::connect(context, SIGNAL(SelectedSerialDeviceChanged(QString)),
                     serial, SLOT(SetActiveSerialDevice(QString)));
    //  Connect Input and BSC
    QObject::connect(context, SIGNAL(SelectedJoystickAChanged(QString)),
                     inputHandler, SLOT(SetMainJoystick(QString*)));
    //  Connect Input to Serial
    QObject::connect(inputHandler, SIGNAL(MotorValuesChanged(quint8[])),
                     serial, SLOT(SetMotorValues(quint8[])));
    QObject::connect(inputHandler, SIGNAL(PostToolUpdate(quint16,quint16)),
                     serial, SLOT(EnqueueToolEvent(quint16,quint16)));


    return app.exec();
}
开发者ID:coleelam，项目名称:Cerulean-BattleStation，代码行数:34，代码来源:main.cpp

示例11: init

void Editor::init()
{
    if(m_initialized){
        return;
    }
    Engine* engine = Engine::getInstance();
    QQmlEngine* qmlEngine = engine->getQmlEngine();

    QQmlContext* context = qmlEngine->rootContext();
    context->setContextProperty("editor",this);

    editorUiComponent = new QQmlComponent(qmlEngine,Util::getUrlPathToAsset("qml/editor/EditorUi.qml"));

    for(QQmlError error :editorUiComponent->errors()){
        qDebug() << "Error on Line" << error.line() << ":" << error.description();
    }

    if(editorUiComponent->isReady()){
        initUi();
    }else {
        connect(editorUiComponent,SIGNAL(statusChanged(QQmlComponent::Status)),
                this,SLOT(onLoadingUiChanged(QQmlComponent::Status)));
    }

    m_initialized = true;
}
开发者ID:adderly，项目名称:VoltAir，代码行数:26，代码来源:Editor.cpp

示例12: addPages

void WelcomeMode::addPages(const QList<IWelcomePage *> &pages)
{
    QList<IWelcomePage *> addedPages = pages;
    Utils::sort(addedPages, [](const IWelcomePage *l, const IWelcomePage *r) {
        return l->priority() < r->priority();
    });
    // insert into m_pluginList, keeping m_pluginList sorted by priority
    QQmlEngine *engine = m_welcomePage->engine();
    auto addIt = addedPages.begin();
    auto currentIt = m_pluginList.begin();
    while (addIt != addedPages.end()) {
        IWelcomePage *page = *addIt;
        QTC_ASSERT(!m_idPageMap.contains(page->id()), ++addIt; continue);
        while (currentIt != m_pluginList.end() && (*currentIt)->priority() <= page->priority())
            ++currentIt;
        // currentIt is now either end() or a page with higher value
        currentIt = m_pluginList.insert(currentIt, page);
        m_idPageMap.insert(page->id(), page);
        page->facilitateQml(engine);
        ++currentIt;
        ++addIt;
    }
    // update model through reset
    QQmlContext *ctx = engine->rootContext();
    ctx->setContextProperty(QLatin1String("pagesModel"), QVariant::fromValue(
                                Utils::transform(m_pluginList, // transform into QList<QObject *>
                                                 [](IWelcomePage *page) -> QObject * {
                                    return page;
                                })));
}
开发者ID:raphaelcotty，项目名称:qt-creator，代码行数:30，代码来源:welcomeplugin.cpp

示例13: exception

void tst_qqmlexpression::exception()
{
    QQmlEngine engine;
    QQmlExpression expression(engine.rootContext(), 0, "abc=123");
    QVariant v = expression.evaluate();
    QCOMPARE(v, QVariant());
    QVERIFY(expression.hasError());
}
开发者ID:RobinWuDev，项目名称:Qt，代码行数:8，代码来源:tst_qqmlexpression.cpp

示例14: newPacket

void MainView::newPacket() {
    QQmlEngine *engine = new QQmlEngine;
    QQmlComponent component(engine);
    engine->rootContext()->setContextProperty("__packet__", new EthernetDisplay());
    component.loadUrl(QUrl(QStringLiteral("qrc:/views/ethernet.qml")));
    if (component.isReady())
        component.create();
}
开发者ID:ArnaudRemi，项目名称:cuteSniffer，代码行数:8，代码来源:MainView.cpp

示例15: QQmlComponent

QQmlComponent_ *newComponent(QQmlEngine_ *engine, QObject_ *parent)
{
    QQmlEngine *qengine = reinterpret_cast<QQmlEngine *>(engine);
    //QObject *qparent = reinterpret_cast<QObject *>(parent);
    QQmlComponent *qcomponent = new QQmlComponent(qengine);
    // Qt 5.2.0 returns NULL on qmlEngine(qcomponent) without this.
    QQmlEngine::setContextForObject(qcomponent, qengine->rootContext());
    return qcomponent;
}
开发者ID:chai2010，项目名称:qml，代码行数:9，代码来源:goqml.cpp


注：本文中的QQmlEngine::rootContext方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。