ListPtr restoreList(char *saveFile)
{
int size;
FILE *fin;
ListPtr list;
NodePtr node;
char errmsg[MAX_MSG_LENGTH];
if (saveFile == NULL) return NULL;
if (strlen(saveFile) == 0) return NULL;
fin = fopen(saveFile, "r");
if (!fin) {
sprintf(errmsg, "restoreList: %s",saveFile);
perror(errmsg);
return NULL;
}
fread(&size, sizeof(int), 1, fin);
if (size <= 0) return NULL;
printf("restore: list size = %d\n", size);
list = createList();
while (size > 0) {
node = restoreNode(fin);
addAtFront(list, node);
size--;
}
fclose(fin);
return list;
}
//----------------------------------------------------------------
void GraphView::addNode(const node n) {
assert(getRoot()->isElement(n));
if (!isElement(n)) {
if (!getSuperGraph()->isElement(n))
getSuperGraph()->addNode(n);
restoreNode(n);
}
}
void
FlowScene::
load()
{
_connections.clear();
_nodes.clear();
//-------------
QString fileName =
QFileDialog::getOpenFileName(nullptr,
tr("Open Flow Scene"),
QDir::homePath(),
tr("Flow Scene Files (*.flow)"));
if (!QFileInfo::exists(fileName))
return;
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly))
return;
QDataStream in(&file);
qint64 nNodes;
in >> nNodes;
for (unsigned int i = 0; i < nNodes; ++i)
{
Properties p;
auto &values = p.values();
in >> values;
restoreNode(p);
}
qint64 nConnections;
in >> nConnections;
for (unsigned int i = 0; i < nConnections; ++i)
{
Properties p;
auto &values = p.values();
in >> values;
restoreConnection(p);
}
}
//----------------------------------------------------------------
node GraphView::addNode() {
node tmp = getSuperGraph()->addNode();
restoreNode(tmp);
return tmp;
}
