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// Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qchannelmapping.h"
#include "qchannelmapping_p.h"
#include <QtCore/qmetaobject.h>
#include <QtCore/QMetaProperty>
QT_BEGIN_NAMESPACE
namespace Qt3DAnimation {
namespace {
template<typename T>
int componentCountForValue(const T &)
{
return 0;
}
template<>
int componentCountForValue<QList<float>>(const QList<float> &v)
{
return v.size();
}
template<>
int componentCountForValue<QVariantList>(const QVariantList &v)
{
return v.size();
}
int componentCountForType(int type, const QVariant &value)
{
const int vectorOfFloatTypeId = qMetaTypeId<QList<float>>();
if (type == vectorOfFloatTypeId)
return componentCountForValue<QList<float>>(value.value<QList<float>>());
switch (type) {
case QMetaType::Float:
case QMetaType::Double:
return 1;
case QMetaType::QVector2D:
return 2;
case QMetaType::QVector3D:
case QMetaType::QColor:
return 3;
case QMetaType::QVector4D:
case QMetaType::QQuaternion:
return 4;
case QMetaType::QVariantList:
return componentCountForValue<QVariantList>(value.toList());
default:
qWarning() << "Unhandled animation type";
return 0;
}
}
} // anonymous
QChannelMappingPrivate::QChannelMappingPrivate()
: QAbstractChannelMappingPrivate()
, m_channelName()
, m_target(nullptr)
, m_property()
, m_propertyName(nullptr)
, m_type(static_cast<int>(QMetaType::UnknownType))
, m_componentCount(0)
{
m_mappingType = ChannelMapping;
}
/*!
\internal
Find the type of the property specified on the target node
*/
void QChannelMappingPrivate::updatePropertyNameTypeAndComponentCount()
{
int type;
int componentCount = 0;
const char *propertyName = nullptr;
if (!m_target || m_property.isNull()) {
type = QMetaType::UnknownType;
} else {
const QMetaObject *mo = m_target->metaObject();
const int propertyIndex = mo->indexOfProperty(m_property.toLocal8Bit());
QMetaProperty mp = mo->property(propertyIndex);
propertyName = mp.name();
type = mp.userType();
const QVariant currentValue = m_target->property(mp.name());
if (type == QMetaType::QVariant) {
if (currentValue.isValid()) {
type = currentValue.userType();
} else {
qWarning("QChannelMapping: Attempted to target QVariant property with no value set. "
"Set a value first in order to be able to determine the type.");
}
}
componentCount = componentCountForType(type, currentValue);
}
if (m_type != type) {
m_type = type;
update();
}
if (m_componentCount != componentCount) {
m_componentCount = componentCount;
update();
}
if (qstrcmp(m_propertyName, propertyName) != 0) {
m_propertyName = propertyName;
update();
}
}
/*!
\class Qt3DAnimation::QChannelMapping
\inherits Qt3DCore::QNode
\inmodule Qt3DAnimation
\brief Allows to map the channels within the clip onto properties of
objects in the application.
*/
QChannelMapping::QChannelMapping(Qt3DCore::QNode *parent)
: QAbstractChannelMapping(*new QChannelMappingPrivate, parent)
{
}
QChannelMapping::QChannelMapping(QChannelMappingPrivate &dd, Qt3DCore::QNode *parent)
: QAbstractChannelMapping(dd, parent)
{
}
QChannelMapping::~QChannelMapping()
{
}
QString QChannelMapping::channelName() const
{
Q_D(const QChannelMapping);
return d->m_channelName;
}
Qt3DCore::QNode *QChannelMapping::target() const
{
Q_D(const QChannelMapping);
return d->m_target;
}
QString QChannelMapping::property() const
{
Q_D(const QChannelMapping);
return d->m_property;
}
void QChannelMapping::setChannelName(const QString &channelName)
{
Q_D(QChannelMapping);
if (d->m_channelName == channelName)
return;
d->m_channelName = channelName;
emit channelNameChanged(channelName);
}
void QChannelMapping::setTarget(Qt3DCore::QNode *target)
{
Q_D(QChannelMapping);
if (d->m_target == target)
return;
if (d->m_target)
d->unregisterDestructionHelper(d->m_target);
if (target && !target->parent())
target->setParent(this);
d->m_target = target;
// Ensures proper bookkeeping
if (d->m_target)
d->registerDestructionHelper(d->m_target, &QChannelMapping::setTarget, d->m_target);
emit targetChanged(target);
d->updatePropertyNameTypeAndComponentCount();
}
void QChannelMapping::setProperty(const QString &property)
{
Q_D(QChannelMapping);
if (d->m_property == property)
return;
d->m_property = property;
// The backend uses propertyName instead of property
const bool blocked = blockNotifications(true);
emit propertyChanged(property);
blockNotifications(blocked);
d->updatePropertyNameTypeAndComponentCount();
}
} // namespace Qt3DAnimation
QT_END_NAMESPACE
#include "moc_qchannelmapping.cpp"
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