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++ // Copyright (C) 2025 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #include "qquicklayeritem_p.h"
++ #include <QtQuick/private/qquickitem_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ /*!
++ \qmltype LayerItem
++ \inqmlmodule Qt.labs.lottieqt.VectorImageHelpers
++ \brief An Item that provides access to its transformation matrix as a property.
++
++ The LayerItem type maintains a \c transformMatrix property, which at any time will contain the
++ combination of the item's own transform with all its ancestors' transforms. It is used in
++ particular to support linked transforms in certain vector graphics formats. As any type in
++ the \c VectorImageHelpers module, it is only intended to be used in code generated by
++ \l VectorImage and related tools.
++ */
++ QQuickLayerItem::QQuickLayerItem(QQuickItem *parent)
++ : QQuickTransformSource(parent)
++ {
++ }
++
++ /*!
++ \qmlproperty matrix4x4 Qt.labs.lottieqt.VectorImageHelpers::LayerItem::transformMatrix
++
++ The result of combining this item's transform with the transforms of its entire
++ ancestor chain.
++ */
++ QMatrix4x4 QQuickLayerItem::transformMatrix()
++ {
++ Q_D(const QQuickItem);
++ if (m_transformDirty) {
++ m_transformDirty = false;
++ QTransform xf;
++ d->itemToParentTransform(&xf);
++ m_transform = xf;
++ }
++ return m_transform;
++ }
++
++ void QQuickLayerItem::itemChange(ItemChange change, const ItemChangeData &value)
++ {
++ if (change == ItemTransformHasChanged) {
++ m_transformDirty = true;
++ emit transformMatrixChanged();
++ }
++
++ QQuickItem::itemChange(change, value);
++ }
++
++ QT_END_NAMESPACE
++
++ #include <moc_qquicklayeritem_p.cpp>