QMimeData *LayerItemModel::mimeData(const QModelIndexList &indexes) const
{
auto mimeData = new QMimeData();
{
QByteArray data;
QDataStream stream(&data, QIODevice::WriteOnly);
for (auto index : indexes)
stream << d->scene->pathForLayer(layerForIndex(index));
mimeData->setData(_layerRefMimeType, data);
}
return mimeData;
}
void QgsLayerTreeView::onCurrentChanged()
{
QgsMapLayer* layerCurrent = layerForIndex( currentIndex() );
QString layerCurrentID = layerCurrent ? layerCurrent->id() : QString();
if ( mCurrentLayerID == layerCurrentID )
return;
// update the current index in model (the item will be underlined)
QModelIndex nodeLayerIndex;
if ( layerCurrent )
{
QgsLayerTreeLayer* nodeLayer = layerTreeModel()->rootGroup()->findLayer( layerCurrentID );
nodeLayerIndex = layerTreeModel()->node2index( nodeLayer );
}
layerTreeModel()->setCurrentIndex( nodeLayerIndex );
mCurrentLayerID = layerCurrentID;
emit currentLayerChanged( layerCurrent );
}
QgsMapLayer* QgsLayerTreeView::currentLayer() const
{
return layerForIndex( currentIndex() );
}
stream << d->scene->pathForLayer(layerForIndex(index));
mimeData->setData(_layerRefMimeType, data);
}
return mimeData;
}
bool LayerItemModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
{
Q_UNUSED(column)
if (action == Qt::IgnoreAction)
return true;
auto parentLayer = layerForIndex(parent);
if (data->hasFormat(_layerRefMimeType))
{
if (row == -1)
row = rowCount(parent);
QByteArray encodedData = data->data(_layerRefMimeType);
QDataStream stream(&encodedData, QIODevice::ReadOnly);
QList<LayerConstRef> layers;
while (!stream.atEnd())
{
QList<int> path;
stream >> path;
