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Switched to a safer way to deal with signals in the graphing window.

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Previously it was possible to crash the program by graphing with a
signal and then loading a different DBC file. No more will that
happen. Also, there is an error message if you load a graph definition
file that relies on a DBC file that you don't have loaded.
This commit is contained in:
Collin Kidder
2016-01-12 22:35:19 -05:00
parent c8666b4147
commit d831f985f5
3 changed files with 35 additions and 15 deletions
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graphingwindow.cpp
+28 -6
View File
@@ -690,7 +690,7 @@ void GraphingWindow::saveDefinitions()
{
outFile->putChar('S');
outFile->putChar(',');
outFile->write(iter->signal->name.toUtf8());
outFile->write(iter->signal.toUtf8());
outFile->putChar(',');
}
else
@@ -728,6 +728,7 @@ void GraphingWindow::loadDefinitions()
{
QString filename;
QFileDialog dialog;
bool dbcMissing = false;
QStringList filters;
filters.append(QString(tr("Graph definition (*.gdf)")));
@@ -761,9 +762,15 @@ void GraphingWindow::loadDefinitions()
DBC_MESSAGE *msg = dbcHandler->findMsgByID(gp.ID);
if (msg != NULL)
{
gp.signal = dbcHandler->findSignalByName(msg, tokens[2]);
DBC_SIGNAL *sig = dbcHandler->findSignalByName(msg, tokens[2]);
if (sig == NULL) dbcMissing = true;
gp.signal = tokens[2];
}
else
{
gp.signal = "";
dbcMissing = true;
}
else gp.signal = NULL;
}
else
{
@@ -798,6 +805,12 @@ void GraphingWindow::loadDefinitions()
}
}
inFile->close();
if (dbcMissing)
{
QMessageBox msg;
msg.setText("One or more graphs could not be loaded\r\nbecause the signal could not be found.\r\nPerhaps you forgot to load\r\nthe DBC file?");
msg.exec();
}
}
}
@@ -837,8 +850,12 @@ void GraphingWindow::appendToGraph(GraphParams &params, CANFrame &frame)
if (params.isDBCSignal)
{
double tempValue;
DBC_MESSAGE *msg = dbcHandler->findMsgByID(params.ID);
DBC_SIGNAL *sig = NULL;
if (msg) sig = dbcHandler->findSignalByName(msg, params.signal);
if (sig == NULL) return;
//if the given signal was found and successfully processed in this frame then add it to the graph
if (dbcHandler->processSignalDouble(frame, *params.signal, tempValue))
if (dbcHandler->processSignalDouble(frame, *sig, tempValue))
{
//qDebug() << "tempValue: " << tempValue;
if (secondsMode)
@@ -967,10 +984,15 @@ void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam)
float yminval=10000000.0, ymaxval = -1000000.0;
float xminval=10000000000.0, xmaxval = -10000000000.0;
GraphParams *refParam = &params;
DBC_MESSAGE *msg = NULL;
DBC_SIGNAL *sig = NULL;
if (params.isDBCSignal)
{
qDebug() << "New signal graph: " << params.signal->name <<" in ID:" << params.ID;
msg = dbcHandler->findMsgByID(params.ID);
if (msg) sig = dbcHandler->findSignalByName(msg, params.signal);
if (sig == NULL) return;
qDebug() << "New signal graph: " << params.signal <<" in ID:" << params.ID;
}
else
{
@@ -1001,7 +1023,7 @@ void GraphingWindow::createGraph(GraphParams &params, bool createGraphParam)
for (int j = 0; j < numEntries; j++)
{
//if the given signal was found and successfully processed in this frame then add it to the graph
if (dbcHandler->processSignalDouble(frameCache[j], *params.signal, tempValue))
if (dbcHandler->processSignalDouble(frameCache[j], *sig, tempValue))
{
//qDebug() << "tempValue: " << tempValue;
if (secondsMode)