| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). |
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| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** General Public License version 3 as published by the Free Software |
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| ** packaging of this file. Please review the following information to |
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| ** |
| ** 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 |
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| ****************************************************************************/ |
| |
| #include "qshadergraphloader_p.h" |
| |
| #include "qshadernodesloader_p.h" |
| |
| #include <QtCore/qdebug.h> |
| #include <QtCore/qiodevice.h> |
| #include <QtCore/qjsonarray.h> |
| #include <QtCore/qjsondocument.h> |
| #include <QtCore/qjsonobject.h> |
| #include <QtCore/qmetaobject.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender |
| { |
| void qt_register_ShaderLanguage_enums(); |
| |
| QShaderGraphLoader::QShaderGraphLoader() noexcept |
| : m_status(Null), |
| m_device(nullptr) |
| { |
| qt_register_ShaderLanguage_enums(); |
| } |
| |
| QShaderGraphLoader::Status QShaderGraphLoader::status() const noexcept |
| { |
| return m_status; |
| } |
| |
| QShaderGraph QShaderGraphLoader::graph() const noexcept |
| { |
| return m_graph; |
| } |
| |
| QIODevice *QShaderGraphLoader::device() const noexcept |
| { |
| return m_device; |
| } |
| |
| void QShaderGraphLoader::setDevice(QIODevice *device) noexcept |
| { |
| m_device = device; |
| m_graph = QShaderGraph(); |
| m_status = !m_device ? Null |
| : (m_device->openMode() & QIODevice::ReadOnly) ? Waiting |
| : Error; |
| } |
| |
| QHash<QString, QShaderNode> QShaderGraphLoader::prototypes() const noexcept |
| { |
| return m_prototypes; |
| } |
| |
| void QShaderGraphLoader::setPrototypes(const QHash<QString, QShaderNode> &prototypes) noexcept |
| { |
| m_prototypes = prototypes; |
| } |
| |
| void QShaderGraphLoader::load() |
| { |
| if (m_status == Error) |
| return; |
| |
| auto error = QJsonParseError(); |
| const QJsonDocument document = QJsonDocument::fromJson(m_device->readAll(), &error); |
| |
| if (error.error != QJsonParseError::NoError) { |
| qWarning() << "Invalid JSON document:" << error.errorString(); |
| m_status = Error; |
| return; |
| } |
| |
| if (document.isEmpty() || !document.isObject()) { |
| qWarning() << "Invalid JSON document, root should be an object"; |
| m_status = Error; |
| return; |
| } |
| |
| const QJsonObject root = document.object(); |
| |
| const QJsonValue nodesValue = root.value(QStringLiteral("nodes")); |
| if (!nodesValue.isArray()) { |
| qWarning() << "Invalid nodes property, should be an array"; |
| m_status = Error; |
| return; |
| } |
| |
| const QJsonValue edgesValue = root.value(QStringLiteral("edges")); |
| if (!edgesValue.isArray()) { |
| qWarning() << "Invalid edges property, should be an array"; |
| m_status = Error; |
| return; |
| } |
| |
| bool hasError = false; |
| |
| const QJsonValue prototypesValue = root.value(QStringLiteral("prototypes")); |
| if (!prototypesValue.isUndefined()) { |
| if (prototypesValue.isObject()) { |
| QShaderNodesLoader loader; |
| loader.load(prototypesValue.toObject()); |
| m_prototypes.insert(loader.nodes()); |
| } else { |
| qWarning() << "Invalid prototypes property, should be an object"; |
| m_status = Error; |
| return; |
| } |
| } |
| |
| const QJsonArray nodes = nodesValue.toArray(); |
| for (const QJsonValue &nodeValue : nodes) { |
| if (!nodeValue.isObject()) { |
| qWarning() << "Invalid node found"; |
| hasError = true; |
| continue; |
| } |
| |
| const QJsonObject nodeObject = nodeValue.toObject(); |
| |
| const QString uuidString = nodeObject.value(QStringLiteral("uuid")).toString(); |
| const QUuid uuid = QUuid(uuidString); |
| if (uuid.isNull()) { |
| qWarning() << "Invalid UUID found in node:" << uuidString; |
| hasError = true; |
| continue; |
| } |
| |
| const QString type = nodeObject.value(QStringLiteral("type")).toString(); |
| if (!m_prototypes.contains(type)) { |
| qWarning() << "Unsupported node type found:" << type; |
| hasError = true; |
| continue; |
| } |
| |
| const QJsonArray layersArray = nodeObject.value(QStringLiteral("layers")).toArray(); |
| auto layers = QStringList(); |
| for (const QJsonValue &layerValue : layersArray) { |
| layers.append(layerValue.toString()); |
| } |
| |
| QShaderNode node = m_prototypes.value(type); |
| node.setUuid(uuid); |
| node.setLayers(layers); |
| |
| const QJsonValue parametersValue = nodeObject.value(QStringLiteral("parameters")); |
| if (parametersValue.isObject()) { |
| const QJsonObject parametersObject = parametersValue.toObject(); |
| for (const QString ¶meterName : parametersObject.keys()) { |
| const QJsonValue parameterValue = parametersObject.value(parameterName); |
| if (parameterValue.isObject()) { |
| const QJsonObject parameterObject = parameterValue.toObject(); |
| const QString type = parameterObject.value(QStringLiteral("type")).toString(); |
| const int typeId = QMetaType::type(type.toUtf8()); |
| |
| const QString value = parameterObject.value(QStringLiteral("value")).toString(); |
| auto variant = QVariant(value); |
| |
| if (QMetaType::typeFlags(typeId) & QMetaType::IsEnumeration) { |
| const QMetaObject *metaObject = QMetaType::metaObjectForType(typeId); |
| const char *className = metaObject->className(); |
| const QByteArray enumName = type.mid(static_cast<int>(qstrlen(className)) + 2).toUtf8(); |
| const QMetaEnum metaEnum = metaObject->enumerator(metaObject->indexOfEnumerator(enumName)); |
| const int enumValue = metaEnum.keyToValue(value.toUtf8()); |
| variant = QVariant(enumValue); |
| variant.convert(typeId); |
| } else { |
| variant.convert(typeId); |
| } |
| node.setParameter(parameterName, variant); |
| } else { |
| node.setParameter(parameterName, parameterValue.toVariant()); |
| } |
| } |
| } |
| |
| m_graph.addNode(node); |
| } |
| |
| const QJsonArray edges = edgesValue.toArray(); |
| for (const QJsonValue &edgeValue : edges) { |
| if (!edgeValue.isObject()) { |
| qWarning() << "Invalid edge found"; |
| hasError = true; |
| continue; |
| } |
| |
| const QJsonObject edgeObject = edgeValue.toObject(); |
| |
| const QString sourceUuidString = edgeObject.value(QStringLiteral("sourceUuid")).toString(); |
| const QUuid sourceUuid = QUuid(sourceUuidString); |
| if (sourceUuid.isNull()) { |
| qWarning() << "Invalid source UUID found in edge:" << sourceUuidString; |
| hasError = true; |
| continue; |
| } |
| |
| const QString sourcePort = edgeObject.value(QStringLiteral("sourcePort")).toString(); |
| |
| const QString targetUuidString = edgeObject.value(QStringLiteral("targetUuid")).toString(); |
| const QUuid targetUuid = QUuid(targetUuidString); |
| if (targetUuid.isNull()) { |
| qWarning() << "Invalid target UUID found in edge:" << targetUuidString; |
| hasError = true; |
| continue; |
| } |
| |
| const QString targetPort = edgeObject.value(QStringLiteral("targetPort")).toString(); |
| |
| const QJsonArray layersArray = edgeObject.value(QStringLiteral("layers")).toArray(); |
| auto layers = QStringList(); |
| for (const QJsonValue &layerValue : layersArray) { |
| layers.append(layerValue.toString()); |
| } |
| |
| auto edge = QShaderGraph::Edge(); |
| edge.sourceNodeUuid = sourceUuid; |
| edge.sourcePortName = sourcePort; |
| edge.targetNodeUuid = targetUuid; |
| edge.targetPortName = targetPort; |
| edge.layers = layers; |
| m_graph.addEdge(edge); |
| } |
| |
| if (hasError) { |
| m_status = Error; |
| m_graph = QShaderGraph(); |
| } else { |
| m_status = Ready; |
| } |
| } |
| } |
| QT_END_NAMESPACE |