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| |
| #include <QtQml/QJSValue> |
| #include <QtQml/QQmlEngine> |
| |
| #include <Qt3DQuickRender/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 <Qt3DRender/private/qurlhelper_p.h> |
| #include <QtCore/qfile.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender { |
| |
| namespace Render { |
| |
| namespace Quick { |
| |
| namespace { |
| const int jsValueTypeId = qMetaTypeId<QJSValue>(); |
| } |
| |
| Quick3DBuffer::Quick3DBuffer(Qt3DCore::QNode *parent) |
| : Qt3DRender::QBuffer(parent) |
| , m_engine(nullptr) |
| , m_v4engine(nullptr) |
| { |
| QObject::connect(this, &Qt3DRender::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(Qt3DRender::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 |
| |
| } // Render |
| |
| } // Qt3DRender |
| |
| QT_END_NAMESPACE |