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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSGSOFTWARERENDERABLENODEUPDATER_H
+#define QSGSOFTWARERENDERABLENODEUPDATER_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qsgsoftwarerenderablenode_p.h"
+#include "qsgabstractsoftwarerenderer_p.h"
+
+#include <private/qsgadaptationlayer_p.h>
+
+#include <QTransform>
+#include <QStack>
+#include <QRectF>
+
+QT_BEGIN_NAMESPACE
+
+class QSGSoftwareRenderableNodeUpdater : public QSGNodeVisitorEx
+{
+public:
+ QSGSoftwareRenderableNodeUpdater(QSGAbstractSoftwareRenderer *renderer);
+ virtual ~QSGSoftwareRenderableNodeUpdater();
+
+ bool visit(QSGTransformNode *) override;
+ void endVisit(QSGTransformNode *) override;
+ bool visit(QSGClipNode *) override;
+ void endVisit(QSGClipNode *) override;
+ bool visit(QSGGeometryNode *) override;
+ void endVisit(QSGGeometryNode *) override;
+ bool visit(QSGOpacityNode *) override;
+ void endVisit(QSGOpacityNode *) override;
+ bool visit(QSGInternalImageNode *) override;
+ void endVisit(QSGInternalImageNode *) override;
+ bool visit(QSGPainterNode *) override;
+ void endVisit(QSGPainterNode *) override;
+ bool visit(QSGInternalRectangleNode *) override;
+ void endVisit(QSGInternalRectangleNode *) override;
+ bool visit(QSGGlyphNode *) override;
+ void endVisit(QSGGlyphNode *) override;
+ bool visit(QSGRootNode *) override;
+ void endVisit(QSGRootNode *) override;
+#if QT_CONFIG(quick_sprite)
+ bool visit(QSGSpriteNode *) override;
+ void endVisit(QSGSpriteNode *) override;
+#endif
+ bool visit(QSGRenderNode *) override;
+ void endVisit(QSGRenderNode *) override;
+
+ void updateNodes(QSGNode *node, bool isNodeRemoved = false);
+
+private:
+ struct NodeState {
+ float opacity;
+ QRegion clip;
+ bool hasClip;
+ QTransform transform;
+ QSGNode *parent;
+ };
+
+ NodeState currentState(QSGNode *node) const;
+
+ template<class NODE>
+ bool updateRenderableNode(QSGSoftwareRenderableNode::NodeType type, NODE *node);
+
+ QSGAbstractSoftwareRenderer *m_renderer;
+ QStack<float> m_opacityState;
+ QStack<QRegion> m_clipState;
+ bool m_hasClip;
+ QStack<QTransform> m_transformState;
+ QHash<QSGNode*,NodeState> m_stateMap;
+};
+
+template<class NODE>
+bool QSGSoftwareRenderableNodeUpdater::updateRenderableNode(QSGSoftwareRenderableNode::NodeType type, NODE *node)
+{
+ //Check if we already know about node
+ auto renderableNode = m_renderer->renderableNode(node);
+ if (renderableNode == nullptr) {
+ renderableNode = new QSGSoftwareRenderableNode(type, node);
+ m_renderer->addNodeMapping(node, renderableNode);
+ }
+
+ //Update the node
+ renderableNode->setTransform(m_transformState.top());
+ renderableNode->setOpacity(m_opacityState.top());
+ renderableNode->setClipRegion(m_clipState.top(), m_hasClip);
+
+ renderableNode->update();
+ m_stateMap[node] = currentState(node);
+
+ return true;
+}
+
+QT_END_NAMESPACE
+
+#endif // QSGSOFTWARERENDERABLENODEUPDATER_H