向QScriptEngine添加类

Add class to QScriptEngine

本文关键字：添加 QScriptEngine      更新时间：2023-10-16

下面是我如何将类的实例添加到我的QScriptEngine的示例:

void Window::runCurrentScript(QRect rect)
{
    Rectangle *script_mouse = new Rectangle(rect.normalized());
    QScriptEngine engine;
    QScriptValue o2 = engine.newQObject(script_mouse);
    engine.globalObject().setProperty("mouse", o2);
    p_current_script = editor->toPlainText();
    // Run the currently selected script...
    QScriptValue result = engine.evaluate(p_current_script);
    canvas->repaint();
}

所有这些都很好，但我想能够在我的脚本中创建新的矩形，像这样:

var rect = new Rectangle();

我该怎么做?

static QScriptValue Window::RectangleConstructor(QScriptContext *context, QScriptEngine *engine)
{
    QObject *parent = context->argument(0).toQObject();
    Rectangle *rectangle;
    switch(context->argumentCount())
    {
        case 2:
            rectangle = new Rectangle(context->argument(0).toInteger(), context->argument(1).toInteger());
        break;
        case 4:
            rectangle = new Rectangle(context->argument(0).toInteger(), context->argument(1).toInteger(),
                                    context->argument(2).toInteger(), context->argument(3).toInteger());
        break;
        default:
            rectangle = new Rectangle(parent);
        break;
    }
    return engine->newQObject(rectangle, QScriptEngine::ScriptOwnership);
}

void Window::runCurrentScript(QRect rect)
{
    Rectangle *script_mouse = new Rectangle(rect.normalized());
    QScriptEngine engine;
    QScriptValue o2 = engine.newQObject(script_mouse);
    engine.globalObject().setProperty("mouse", o2);
    QScriptValue rectConstructor = p_engine->newFunction(RectangleConstructor);
    QScriptValue rectMetaObject = p_engine->newQMetaObject(&Rectangle::staticMetaObject, rectConstructor);
    engine.globalObject().setProperty("Rect", rectMetaObject);
    p_current_script = editor->toPlainText();
    // Run the currently selected script...
    QScriptValue result = engine.evaluate(p_current_script);
    canvas->repaint();
}
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