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/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#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
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