void QQuickOpenGLShaderEffectCommon::connectPropertySignals(QQuickItem *item,
const QMetaObject *itemMetaObject,
Key::ShaderType shaderType)
{
QQmlPropertyCache *propCache = QQmlData::ensurePropertyCache(qmlEngine(item), item);
for (int i = 0; i < uniformData[shaderType].size(); ++i) {
if (signalMappers[shaderType].at(i) == 0)
continue;
const UniformData &d = uniformData[shaderType].at(i);
QQmlPropertyData *pd = propCache->property(QString::fromUtf8(d.name), nullptr, nullptr);
if (pd && !pd->isFunction()) {
if (pd->notifyIndex() == -1) {
qWarning("QQuickOpenGLShaderEffect: property '%s' does not have notification method!", d.name.constData());
} else {
auto *mapper = signalMappers[shaderType].at(i);
mapper->setSignalIndex(itemMetaObject->property(d.propertyIndex).notifySignal().methodIndex());
Q_ASSERT(item->metaObject() == itemMetaObject);
bool ok = QObjectPrivate::connectImpl(item, pd->notifyIndex(), item, nullptr, mapper,
Qt::AutoConnection, nullptr, itemMetaObject);
if (!ok)
qWarning() << "Failed to connect to property" << itemMetaObject->property(d.propertyIndex).name()
<< "(" << d.propertyIndex << ", signal index" << pd->notifyIndex()
<< ") of item" << item;
}
} else {
// If the source is set via a dynamic property, like the layer is, then we need this
// check to disable the warning.
if (!item->property(d.name).isValid())
qWarning("QQuickOpenGLShaderEffect: '%s' does not have a matching property!", d.name.constData());
}
if (d.specialType == UniformData::Sampler || d.specialType == UniformData::SamplerExternal) {
QQuickItem *source = qobject_cast<QQuickItem *>(qvariant_cast<QObject *>(d.value));
if (source) {
if (item->window())
QQuickItemPrivate::get(source)->refWindow(item->window());
QObject::connect(source, SIGNAL(destroyed(QObject*)), host, SLOT(sourceDestroyed(QObject*)));
}
}
}
}
