Passing QByteArray to a callable QJSValue

jernkuan

What is the correct way to pass a QByteArray as a parameter to a callable QJSValue?

Assuming data is binary format.

QString title = "Intro";
QByteArray byteArray;
// read from file into byteArray

QJSValueList args;
args << title;
args << byteArray;
callback.call(args);

The javascript function will be subsequently be passing this to a C++ function for processing.

Should i be doing this?

QString title = "Intro";
QByteArray byteArray;
// read from file into byteArray

QJSValueList args;
args << title;
args << QString::fromLatin1(byteArray.data(), payload.size());
callback.call(args);

Rick Smith 2099

workaround:

convert QByteArray to QString(base64 encoded)
decode that string on qml/js side

QByteArray ba = ...;
QString encoed(ba.toBase64());
QJSValueList params { QJSValue(encoed)};
callback.call(params);

waiting for better anser :)

Colton

In the event that anyone else comes across this looking for a solution (like I was), Qt 5 and above can convert QByteArray to a Javascript ArrayBuffer.
To do this, use toScriptValue:

QJSEngine jsEngine = qjsEngine(this);
QJSValueList args;
args << title;
args << jsEngine->toScriptValue(byteArray);
callback.call(args);