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Diffstat (limited to 'src/gui/util/qshadergraphloader.cpp')
| -rw-r--r-- | src/gui/util/qshadergraphloader.cpp | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/gui/util/qshadergraphloader.cpp b/src/gui/util/qshadergraphloader.cpp new file mode 100644 index 0000000000..8d92c73a5a --- /dev/null +++ b/src/gui/util/qshadergraphloader.cpp @@ -0,0 +1,254 @@ +/**************************************************************************** +** +** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtGui 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qshadergraphloader_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 + +void qt_register_ShaderLanguage_enums(); + +QShaderGraphLoader::QShaderGraphLoader() Q_DECL_NOTHROW + : m_status(Null), + m_device(nullptr) +{ + qt_register_ShaderLanguage_enums(); +} + +QShaderGraphLoader::Status QShaderGraphLoader::status() const Q_DECL_NOTHROW +{ + return m_status; +} + +QShaderGraph QShaderGraphLoader::graph() const Q_DECL_NOTHROW +{ + return m_graph; +} + +QIODevice *QShaderGraphLoader::device() const Q_DECL_NOTHROW +{ + return m_device; +} + +void QShaderGraphLoader::setDevice(QIODevice *device) Q_DECL_NOTHROW +{ + m_device = device; + m_graph = QShaderGraph(); + m_status = !m_device ? Null + : (m_device->openMode() & QIODevice::ReadOnly) ? Waiting + : Error; +} + +QHash<QString, QShaderNode> QShaderGraphLoader::prototypes() const Q_DECL_NOTHROW +{ + return m_prototypes; +} + +void QShaderGraphLoader::setPrototypes(const QHash<QString, QShaderNode> &prototypes) Q_DECL_NOTHROW +{ + m_prototypes = prototypes; +} + +void QShaderGraphLoader::load() +{ + if (m_status == Error) + return; + + auto error = QJsonParseError(); + const auto 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 auto root = document.object(); + + const auto nodesValue = root.value(QStringLiteral("nodes")); + if (!nodesValue.isArray()) { + qWarning() << "Invalid nodes property, should be an array"; + m_status = Error; + return; + } + + const auto edgesValue = root.value(QStringLiteral("edges")); + if (!edgesValue.isArray()) { + qWarning() << "Invalid edges property, should be an array"; + m_status = Error; + return; + } + + bool hasError = false; + + const auto nodes = nodesValue.toArray(); + for (const auto &nodeValue : nodes) { + if (!nodeValue.isObject()) { + qWarning() << "Invalid node found"; + hasError = true; + continue; + } + + const auto nodeObject = nodeValue.toObject(); + + const auto uuidString = nodeObject.value(QStringLiteral("uuid")).toString(); + const auto uuid = QUuid(uuidString); + if (uuid.isNull()) { + qWarning() << "Invalid UUID found in node:" << uuidString; + hasError = true; + continue; + } + + const auto type = nodeObject.value(QStringLiteral("type")).toString(); + if (!m_prototypes.contains(type)) { + qWarning() << "Unsupported node type found:" << type; + hasError = true; + continue; + } + + const auto layersArray = nodeObject.value(QStringLiteral("layers")).toArray(); + auto layers = QStringList(); + for (const auto &layerValue : layersArray) { + layers.append(layerValue.toString()); + } + + auto node = m_prototypes.value(type); + node.setUuid(uuid); + node.setLayers(layers); + + const auto parametersValue = nodeObject.value(QStringLiteral("parameters")); + if (parametersValue.isObject()) { + const auto parametersObject = parametersValue.toObject(); + for (const auto ¶meterName : parametersObject.keys()) { + const auto parameterValue = parametersObject.value(parameterName); + if (parameterValue.isObject()) { + const auto parameterObject = parameterValue.toObject(); + const auto type = parameterObject.value(QStringLiteral("type")).toString(); + const auto typeId = QMetaType::type(type.toUtf8()); + + const auto value = parameterObject.value(QStringLiteral("value")).toString(); + auto variant = QVariant(value); + + if (QMetaType::typeFlags(typeId) & QMetaType::IsEnumeration) { + const auto metaObject = QMetaType::metaObjectForType(typeId); + const auto className = metaObject->className(); + const auto enumName = type.mid(static_cast<int>(qstrlen(className)) + 2).toUtf8(); + const auto metaEnum = metaObject->enumerator(metaObject->indexOfEnumerator(enumName)); + const auto 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 auto edges = edgesValue.toArray(); + for (const auto &edgeValue : edges) { + if (!edgeValue.isObject()) { + qWarning() << "Invalid edge found"; + hasError = true; + continue; + } + + const auto edgeObject = edgeValue.toObject(); + + const auto sourceUuidString = edgeObject.value(QStringLiteral("sourceUuid")).toString(); + const auto sourceUuid = QUuid(sourceUuidString); + if (sourceUuid.isNull()) { + qWarning() << "Invalid source UUID found in edge:" << sourceUuidString; + hasError = true; + continue; + } + + const auto sourcePort = edgeObject.value(QStringLiteral("sourcePort")).toString(); + + const auto targetUuidString = edgeObject.value(QStringLiteral("targetUuid")).toString(); + const auto targetUuid = QUuid(targetUuidString); + if (targetUuid.isNull()) { + qWarning() << "Invalid target UUID found in edge:" << targetUuidString; + hasError = true; + continue; + } + + const auto targetPort = edgeObject.value(QStringLiteral("targetPort")).toString(); + + const auto layersArray = edgeObject.value(QStringLiteral("layers")).toArray(); + auto layers = QStringList(); + for (const auto &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 |