void SpreadDialog::newSpread ()
{
bool ok = FALSE;
QString spread = QInputDialog::getText(QObject::tr("New Spread"),
QObject::tr("Enter symbol name for the new Spread"),
QLineEdit::Normal,
QString::null,
&ok,
0);
if (! spread.length() || ok == FALSE)
return;
QDir dir;
Config config;
QString s;
config.getData(Config::DataPath, s);
s.append("/Spread");
if (! dir.exists(s))
{
if (! dir.mkdir(s, TRUE))
{
QMessageBox::information(0,
QObject::tr("Qtstalker: Error"),
QObject::tr("Could not create Spread directory."));
return;
}
}
s.append("/" + spread);
if (dir.exists(s))
{
QMessageBox::information(0,
QObject::tr("Qtstalker: Error"),
QObject::tr("This Spread already exists."));
return;
}
DbPlugin db;
if (db.openChart(s))
{
QMessageBox::information(0,
QObject::tr("Qtstalker: Disk Error"),
QObject::tr("Cannot create chart."));
db.close();
return;
}
db.setHeaderField(DbPlugin::Symbol, spread);
s = "Spread";
db.setHeaderField(DbPlugin::Type, s);
db.setHeaderField(DbPlugin::Plugin, s);
db.setHeaderField(DbPlugin::Title, spread);
db.close();
}
void Index::loadIndexData (QString &symbol, QDict<Bar> &lookup, QDateTime &startDate, float weight,
int barRange, BarData::BarLength barLength)
{
DbPlugin db;
if (db.openChart(symbol))
{
qDebug("DbPlugin::getIndexHistory: cannot open symbol chart");
db.close();
return;
}
BarData *bar = new BarData(symbol);
bar->setBarLength(barLength);
db.setBarRange(barRange);
db.getHistory(bar, startDate);
db.close();
int loop;
for (loop = 0; loop < (int) bar->count(); loop++)
{
QDateTime dt;
bar->getDate(loop, dt);
QString s = dt.toString("yyyyMMddhhmmss");
Bar *r = lookup.find(s);
if (! r)
{
r = new Bar;
r->setDate(dt);
r->setOpen(bar->getOpen(loop) * weight);
r->setHigh(bar->getHigh(loop) * weight);
r->setLow(bar->getLow(loop) * weight);
r->setClose(bar->getClose(loop) * weight);
r->setOI(1);
r->getDateTimeString(FALSE, s);
lookup.insert(s, r);
}
else
{
r->setOpen(r->getOpen() + (bar->getOpen(loop) * weight));
r->setHigh(r->getHigh() + (bar->getHigh(loop) * weight));
r->setLow(r->getLow() + (bar->getLow(loop) * weight));
r->setClose(r->getClose() + (bar->getClose(loop) * weight));
r->setOI((int) r->getOI() + 1);
}
}
delete bar;
db.close();
}
void Spread::getHistory (BarData *barData, QDateTime &startDate, QString &fs, QString &ss,
int barRange, BarData::BarLength barLength)
{
// get the first symbol bars
QString s;
DbPlugin db;
if (db.openChart(fs))
{
qDebug("DbPlugin::getSpreadHistory: cannot open first symbol chart");
db.close();
return;
}
BarData *bar = new BarData(fs);
bar->setBarLength(barLength);
db.setBarRange(barRange);
db.getHistory(bar, startDate);
db.close();
// get the second symbol bars
if (db.openChart(ss))
{
qDebug("DbPlugin::getSpreadHistory: cannot open second symbol chart");
db.close();
delete bar;
return;
}
BarData *bar2 = new BarData(ss);
bar2->setBarLength(barLength);
db.setBarRange(barRange);
db.getHistory(bar2, startDate);
db.close();
// create lookup dict for first symbol bars
QDict<Bar> lookup;
lookup.setAutoDelete(TRUE);
int loop;
for (loop = 0; loop < bar->count(); loop++)
{
Bar *r = new Bar;
QDateTime dt;
bar->getDate(loop, dt);
r->setDate(dt);
r->setClose(bar->getClose(loop));
r->getDateTimeString(FALSE, s);
lookup.insert(s, r);
}
// match all second symbol bars
for (loop = bar2->count() - 1; loop > -1; loop--)
{
Bar r;
QDateTime dt;
bar2->getDate(loop, dt);
s = dt.toString("yyyyMMddhhmmss");
Bar *tr = lookup.find(s);
if (tr)
{
double t = tr->getClose() - bar2->getClose(loop);
r.setDate(dt);
r.setOpen(t);
r.setHigh(t);
r.setLow(t);
r.setClose(t);
barData->prepend(r);
}
}
delete bar;
delete bar2;
}