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Diffstat (limited to 'src/quick3d/quick3d/items/quick3dbuffer.cpp')
-rw-r--r-- | src/quick3d/quick3d/items/quick3dbuffer.cpp | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/quick3d/quick3d/items/quick3dbuffer.cpp b/src/quick3d/quick3d/items/quick3dbuffer.cpp new file mode 100644 index 000000000..7beb1cc90 --- /dev/null +++ b/src/quick3d/quick3d/items/quick3dbuffer.cpp @@ -0,0 +1,139 @@ +/**************************************************************************** +** +** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB). +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt3D 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 <QtQml/QJSValue> +#include <QtQml/QQmlEngine> + +#include <Qt3DQuick/private/quick3dbuffer_p.h> +#include <QtQml/private/qqmlengine_p.h> +#include <QtQml/private/qjsvalue_p.h> +#include <QtQml/private/qv4typedarray_p.h> +#include <QtQml/private/qv4arraybuffer_p.h> +#include <Qt3DCore/private/qurlhelper_p.h> +#include <QtCore/qfile.h> + +QT_BEGIN_NAMESPACE + +namespace Qt3DCore { +namespace Quick { + +namespace { +const int jsValueTypeId = qMetaTypeId<QJSValue>(); +} + +Quick3DBuffer::Quick3DBuffer(Qt3DCore::QNode *parent) + : Qt3DCore::QBuffer(parent) + , m_engine(nullptr) + , m_v4engine(nullptr) +{ + QObject::connect(this, &Qt3DCore::QBuffer::dataChanged, this, &Quick3DBuffer::bufferDataChanged); +} + +QByteArray Quick3DBuffer::convertToRawData(const QJSValue &jsValue) +{ + initEngines(); + Q_ASSERT(m_v4engine); + QV4::Scope scope(m_v4engine); + QV4::Scoped<QV4::TypedArray> typedArray(scope, + QJSValuePrivate::convertedToValue(m_v4engine, jsValue)); + if (!typedArray) + return QByteArray(); + + char *dataPtr = reinterpret_cast<char *>(typedArray->arrayData()->data()); + dataPtr += typedArray->d()->byteOffset; + uint byteLength = typedArray->byteLength(); + return QByteArray(dataPtr, byteLength); +} + +QVariant Quick3DBuffer::bufferData() const +{ + return QVariant::fromValue(data()); +} + +void Quick3DBuffer::setBufferData(const QVariant &bufferData) +{ + if (bufferData.userType() == QMetaType::QByteArray) { + QBuffer::setData(bufferData.toByteArray()); + } else if (bufferData.userType() == jsValueTypeId) { + QJSValue jsValue = bufferData.value<QJSValue>(); + QBuffer::setData(convertToRawData(jsValue)); + } +} + +void Quick3DBuffer::updateData(int offset, const QVariant &bufferData) +{ + if (bufferData.userType() == QMetaType::QByteArray) { + QBuffer::updateData(offset, bufferData.toByteArray()); + } else if (bufferData.userType() == jsValueTypeId) { + QJSValue jsValue = bufferData.value<QJSValue>(); + QBuffer::updateData(offset, convertToRawData(jsValue)); + } +} + +/*! + \qmlmethod string Quick3DBuffer::readBinaryFile(url &fileUrl) + + Reads the binary at \a fileUrl and return it as a QByteArray wrapped in a + QVariant + + \note this is provided as convenience for QML where reading files and creating + QByteArray is not possible + */ +QVariant Quick3DBuffer::readBinaryFile(const QUrl &fileUrl) +{ + QFile f(Qt3DCore::QUrlHelper::urlToLocalFileOrQrc(fileUrl)); + QByteArray data; + + if (f.open(QIODevice::ReadOnly)) + data = f.readAll(); + return QVariant(data); +} + +void Quick3DBuffer::initEngines() +{ + if (m_engine == nullptr) { + m_engine = qmlEngine(parent()); + m_v4engine = QQmlEnginePrivate::getV4Engine(m_engine); + } +} + +} // Quick +} // Qt3DCore + +QT_END_NAMESPACE |