/*!
* paste only one object type so handlePaste can control the order of creation
*/
static GraphObjectList handlePasteType(GraphDraw *draw, const Poco::JSON::Array::Ptr &graphObjects, const std::string &type)
{
GraphObjectList newObjects;
for (size_t objIndex = 0; objIndex < graphObjects->size(); objIndex++)
{
const auto jGraphObj = graphObjects->getObject(objIndex);
const auto what = jGraphObj->getValue<std::string>("what");
GraphObject *obj = nullptr;
if (what != type) continue;
if (what == "Block") obj = new GraphBlock(draw);
if (what == "Breaker") obj = new GraphBreaker(draw);
if (what == "Connection") obj = new GraphConnection(draw);
if (what == "Widget") obj = new GraphWidget(draw);
if (obj == nullptr) continue;
try {obj->deserialize(jGraphObj);}
catch (const Pothos::NotFoundException &)
{
delete obj;
continue;
}
obj->setSelected(true);
newObjects.push_back(obj);
}
return newObjects;
}
void GraphEditor::handleBlockXcrement(const int adj)
{
if (not this->isVisible()) return;
auto draw = this->getCurrentGraphDraw();
GraphObjectList changedObjects;
for (auto obj : draw->getObjectsSelected(GRAPH_BLOCK))
{
auto block = dynamic_cast<GraphBlock *>(obj);
assert(block != nullptr);
for (const auto &propKey : block->getProperties())
{
auto paramDesc = block->getParamDesc(propKey);
if (paramDesc->has("widgetType") and paramDesc->getValue<std::string>("widgetType") == "SpinBox")
{
const auto newValue = block->getPropertyValue(propKey).toInt() + adj;
block->setPropertyValue(propKey, QString("%1").arg(newValue));
changedObjects.push_back(block);
break;
}
}
}
if (changedObjects.empty()) return;
const auto desc = (changedObjects.size() == 1)? changedObjects.front()->getId() : tr("selected");
if (adj > 0) handleStateChange(GraphState("list-add", tr("Increment %1").arg(desc)));
if (adj < 0) handleStateChange(GraphState("list-remove", tr("Decrement %1").arg(desc)));
}
GraphObjectList GraphDraw::getObjectsSelected(const int selectionFlags)
{
GraphObjectList objectsSelected;
for (auto obj : this->getGraphObjects(selectionFlags))
{
if (obj->isSelected()) objectsSelected.push_back(obj);
}
return objectsSelected;
}
GraphObjectList GraphDraw::getObjectsAtPos(const QPoint &pos)
{
GraphObjectList graphObjs;
const auto objs = this->items(pos);
for (auto obj : objs)
{
auto graphObj = dynamic_cast<GraphObject *>(obj);
if (graphObj != nullptr) graphObjs.push_back(graphObj);
}
return graphObjs;
}
GraphObjectList GraphEditor::getGraphObjects(const int selectionFlags) const
{
GraphObjectList all;
for (int i = 0; i < this->count(); i++)
{
for (auto obj : this->getGraphDraw(i)->getGraphObjects(selectionFlags))
{
all.push_back(obj);
}
}
return all;
}
GraphObjectList GraphDraw::getGraphObjects(const int selectionFlags)
{
GraphObjectList l;
for (auto child : this->items())
{
auto o = dynamic_cast<GraphObject *>(child);
if (o == nullptr) continue;
if (((selectionFlags & GRAPH_BLOCK) != 0) and (qobject_cast<GraphBlock *>(o) != nullptr)) l.push_back(o);
if (((selectionFlags & GRAPH_BREAKER) != 0) and (qobject_cast<GraphBreaker *>(o) != nullptr)) l.push_back(o);
if (((selectionFlags & GRAPH_CONNECTION) != 0) and (qobject_cast<GraphConnection *>(o) != nullptr)) l.push_back(o);
if (((selectionFlags & GRAPH_WIDGET) != 0) and (qobject_cast<GraphWidget *>(o) != nullptr)) l.push_back(o);
}
return l;
}
void GraphEditor::handlePaste(void)
{
if (not this->isVisible()) return;
auto draw = this->getCurrentGraphDraw();
auto mimeData = QApplication::clipboard()->mimeData();
const bool canPaste = mimeData->hasFormat("text/json/pothos_object_array") and
not mimeData->data("text/json/pothos_object_array").isEmpty();
if (not canPaste) return;
//extract object array
const auto data = mimeData->data("text/json/pothos_object_array");
const std::string dataStr(data.constData(), data.size());
std::istringstream iss(dataStr);
Poco::JSON::Parser p; p.parse(iss);
auto graphObjects = p.getHandler()->asVar().extract<Poco::JSON::Array::Ptr>();
assert(graphObjects);
//rewrite ids
std::map<std::string, std::string> oldIdToNew;
for (size_t objIndex = 0; objIndex < graphObjects->size(); objIndex++)
{
const auto jGraphObj = graphObjects->getObject(objIndex);
auto oldId = jGraphObj->getValue<std::string>("id");
oldIdToNew[oldId] = this->newId(QString::fromStdString(oldId)).toStdString();
}
for (size_t objIndex = 0; objIndex < graphObjects->size();)
{
for (auto &pair : *graphObjects->getObject(objIndex))
{
if (QString::fromStdString(pair.first).endsWith("id", Qt::CaseInsensitive))
{
//if not in oldIdToNew, remove from list
if (oldIdToNew.count(pair.second) == 0)
{
graphObjects->remove(objIndex);
goto nextObj;
}
pair.second = oldIdToNew[pair.second];
}
}
objIndex++;
nextObj: continue;
}
//unselect all objects
draw->deselectAllObjs();
//create objects
GraphObjectList objsToMove;
objsToMove.append(handlePasteType(draw, graphObjects, "Block"));
objsToMove.append(handlePasteType(draw, graphObjects, "Breaker"));
handlePasteType(draw, graphObjects, "Connection"); //dont append, connection position doesnt matter
objsToMove.append(handlePasteType(draw, graphObjects, "Widget"));
//deal with initial positions of pasted objects
QPointF cornerest(1e6, 1e6);
for (auto obj : objsToMove)
{
cornerest.setX(std::min(cornerest.x(), obj->pos().x()));
cornerest.setY(std::min(cornerest.y(), obj->pos().y()));
}
//determine an acceptable position to center the paste
auto view = dynamic_cast<QGraphicsView *>(this->currentWidget());
auto pastePos = view->mapToScene(view->mapFromGlobal(QCursor::pos()));
if (not view->sceneRect().contains(pastePos))
{
pastePos = view->mapToScene(this->size().width()/2, this->size().height()/2);
}
//move objects into position
for (auto obj : objsToMove) obj->setPos(obj->pos()-cornerest+pastePos);
handleStateChange(GraphState("edit-paste", tr("Paste %1").arg(draw->getSelectionDescription())));
}