C++ ModelNode::metaInfo方法代码示例

static bool isFileComponent(const ModelNode &node)
{
    if (node.isValid()
            && node.metaInfo().isValid()
            && node.metaInfo().isFileComponent())
        return true;

    return false;
}

static bool hasSourceWithFileComponent(const ModelNode &modelNode)
{
    if (modelNode.isValid()
            && modelNode.metaInfo().isValid()
            && modelNode.metaInfo().isSubclassOf("QtQuick.Loader")
            && modelNode.hasVariantProperty("source"))
        return true;

    return false;
}

static bool hasDelegateWithFileComponent(const ModelNode &node)
{
    if (node.isValid()
            && node.metaInfo().isValid()
            && node.metaInfo().isView()
            && node.hasNodeProperty("delegate")
            && node.nodeProperty("delegate").modelNode().metaInfo().isFileComponent())
        return true;

    return false;
}

static int getMajorVersionFromNode(const ModelNode &modelNode)
{
    if (modelNode.metaInfo().isValid()) {
        if (modelNode.type() == "QtQuick.QtObject" || modelNode.type() == "QtQuick.Item")
            return modelNode.majorVersion();

        foreach (const NodeMetaInfo &superClass,  modelNode.metaInfo().superClasses()) {
            if (modelNode.type() == "QtQuick.QtObject" || modelNode.type() == "QtQuick.Item")
                return superClass.majorVersion();
        }
    }

    return 1; //default
}

static bool isLoaderWithSourceComponent(const ModelNode &modelNode)
{
    if (modelNode.isValid()
            && modelNode.metaInfo().isValid()
            && modelNode.metaInfo().isSubclassOf("QtQuick.Loader")) {

        if (modelNode.hasNodeProperty("sourceComponent"))
            return true;
        if (modelNode.hasNodeListProperty("component"))
            return true;
    }

    return false;
}

int ColorTool::wantHandleItem(const ModelNode &modelNode) const
{
    if (modelNode.metaInfo().hasProperty("color"))
        return 10;

    return 0;
}

static void handleDelegate(const ModelNode &modelNode)
{
    if (modelNode.metaInfo().isView()
            && modelNode.hasNodeProperty("delegate")
            && modelNode.nodeProperty("delegate").modelNode().nodeSourceType() == ModelNode::NodeWithComponentSource)
        designDocument()->changeToSubComponent(modelNode.nodeProperty("delegate").modelNode());
}

int TextTool::wantHandleItem(const ModelNode &modelNode) const
{
    if (modelNode.metaInfo().hasProperty("text"))
        return 20;

    return 0;
}

static ModelNode findTabViewModelNode(const ModelNode &currentModelNode)
{
    if (currentModelNode.metaInfo().isSubclassOf("QtQuick.Controls.TabView", -1, -1))
        return currentModelNode;
    else
        return findTabViewModelNode(currentModelNode.parentProperty().parentModelNode());
}

static void openComponentSourcePropertyOfLoader(const ModelNode &modelNode)
{
    QmlDesignerPlugin::instance()->viewManager().nextFileIsCalledInternally();

    QHash<PropertyName, QVariant> propertyHash;

    getProperties(modelNode, propertyHash);

    ModelNode componentModelNode;

    if (modelNode.hasNodeProperty("sourceComponent")) {
        componentModelNode = modelNode.nodeProperty("sourceComponent").modelNode();
    } else if (modelNode.hasNodeListProperty("component")) {

     /*
     * The component property should be a NodeProperty, but currently is a NodeListProperty, because
     * the default property is always implcitly a NodeListProperty. This is something that has to be fixed.
     */

        componentModelNode = modelNode.nodeListProperty("component").toModelNodeList().first();
    }

    Core::EditorManager::openEditor(componentModelNode.metaInfo().componentFileName(), Core::Id(), Core::EditorManager::DoNotMakeVisible);

    ModelNode rootModelNode = currentDesignDocument()->rewriterView()->rootModelNode();
    applyProperties(rootModelNode, propertyHash);
}

static QList<ModelNode> acceptedModelNodeChildren(const ModelNode &parentNode)
{
    QList<ModelNode> children;
    PropertyNameList properties;

    if (parentNode.metaInfo().hasDefaultProperty())
        properties.append(parentNode.metaInfo().defaultPropertyName());

#ifndef DISABLE_VISIBLE_PROPERTIES
    properties.append(visibleProperties(parentNode));
#endif

    foreach (const PropertyName &propertyName, properties) {
        AbstractProperty property(parentNode.property(propertyName));
        if (property.isNodeAbstractProperty())
            children.append(property.toNodeAbstractProperty().directSubNodes());
    }

NavigatorTreeModel::ItemRow NavigatorTreeModel::createItemRow(const ModelNode &node)
{
    Q_ASSERT(node.isValid());

    uint hash = node.internalId();

    const bool dropEnabled = node.metaInfo().isValid();

    QStandardItem *idItem = new QStandardItem;
    idItem->setDragEnabled(true);
    idItem->setDropEnabled(dropEnabled);
    idItem->setEditable(true);
    idItem->setData(hash, NavigatorRole);
    if (node.metaInfo().isValid())
        idItem->setToolTip(node.type());
    else
        idItem->setToolTip(msgUnknownItem(node.type()));
#    ifdef _LOCK_ITEMS_
    QStandardItem *lockItem = new QStandardItem;
    lockItem->setDragEnabled(true);
    lockItem->setDropEnabled(dropEnabled);
    lockItem->setEditable(false);
    lockItem->setCheckable(true);
    lockItem->setData(hash, NavigatorRole);
#    endif

    QStandardItem *visibilityItem = new QStandardItem;
    visibilityItem->setDropEnabled(dropEnabled);
    visibilityItem->setCheckable(true);
    visibilityItem->setEditable(false);
    visibilityItem->setData(hash, NavigatorRole);
    if (node.isRootNode())
        visibilityItem->setCheckable(false);

    QMap<QString, QStandardItem *> propertyItems;
    foreach (const QString &propertyName, visibleProperties(node)) {
        QStandardItem *propertyItem = new QStandardItem;
        propertyItem->setSelectable(false);
        propertyItem->setDragEnabled(false);
        propertyItem->setDropEnabled(dropEnabled);
        propertyItem->setEditable(false);
        propertyItem->setData(propertyName, Qt::DisplayRole);
        propertyItems.insert(propertyName, propertyItem);
        idItem->appendRow(propertyItem);
    }

static inline void openInlineComponent(const ModelNode &modelNode)
{
    if (!modelNode.metaInfo().isValid())
        return;

    handleComponent(modelNode);
    handleDelegate(modelNode);
    handleTabComponent(modelNode);
}

void NodeInstanceView::currentStateChanged(const ModelNode &node)
{
    NodeInstance newStateInstance = instanceForModelNode(node);

    if (newStateInstance.isValid() && node.metaInfo().isSubclassOf("QtQuick.State", 1, 0))
        nodeInstanceView()->activateState(newStateInstance);
    else
        nodeInstanceView()->activateBaseState();
}

void NameItemDelegate::paint(QPainter *painter,
               const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if (option.state & QStyle::State_Selected)
        drawSelectionBackground(painter, option);

    QString displayString;
    QPoint displayStringOffset;

    painter->save();
    QFontMetrics fm(option.font);
    int width = 0;
    if (index.data(Qt::UserRole).isValid()) {

        int pixmapSide = 16;

        if (m_TreeModel->isNodeInvisible( index ))
            painter->setOpacity(0.5);

        ModelNode node = m_TreeModel->nodeForIndex(index);

        QIcon icon;
        if (node.isValid()) {
            // if node has no own icon, search for it in the itemlibrary
            const ItemLibraryInfo *libraryInfo = node.model()->metaInfo().itemLibraryInfo();
            QList <ItemLibraryEntry> infoList = libraryInfo->entriesForType(node.type(),
                                                                            node.majorVersion(),
                                                                            node.minorVersion());
            foreach (const ItemLibraryEntry &entry, infoList) {
                if (icon.isNull()) {
                    icon = entry.icon();
                    break;
                }
            }
        }
        // if the library was also empty, use the default icon
        if (icon.isNull())
            icon = QIcon(QLatin1String(":/ItemLibrary/images/item-default-icon.png"));
        if (!node.metaInfo().isValid())
            icon = QIcon(QLatin1String(":/ItemLibrary/images/item-invalid-icon.png"));

        // If no icon is present, leave an empty space of 24 pixels anyway
        QPixmap pixmap = icon.pixmap(pixmapSide, pixmapSide);
        painter->drawPixmap(option.rect.x()+1,option.rect.y()+2,pixmap);

        displayString = node.id();
        if (displayString.isEmpty())
            displayString = node.simplifiedTypeName();

        // Check text length does not exceed available space
        int extraSpace=12+pixmapSide;

        displayString = fm.elidedText(displayString,Qt::ElideMiddle,option.rect.width()-extraSpace);
        displayStringOffset = QPoint(5+pixmapSide,-5);
        width = fm.width(displayString);
    }