fix: restore barcode text population for QR code objects

[ji-kwon-sherpas]

Problem

In v3.0.0, QR code (barcode) objects in templates are not being populated with the provided data. Instead, the default value hardcoded in the .lbx template file is printed/previewed.

This is a regression from v2.2.0, which had the changelog entry: "Patched a bug where QR codes were not being populated".

Root Cause

In v2.2.0, populateObjectsInTemplate handled barcode objects with both obj.Text = value and Doc.SetBarcodeData():

// v2.2.0 (working)
case ObjectTypes.Barcode:
    const barcodeIndex = await Doc.GetBarcodeIndex(key);
    obj.Text = value;                              // ← sets the barcode data
    await Doc.SetBarcodeData(barcodeIndex, value);
    break;

During the v3.0.0 refactor, obj.Text = value was removed:

// v3.0.0 (broken)
case ObjectTypes.Barcode:
    const barcodeIndex = await Doc.GetBarcodeIndex(key);
    await Doc.SetBarcodeData(barcodeIndex, value); // ← only method left
    break;

The problem is that Doc.GetBarcodeIndex(key) returns undefined for QR code objects. This causes Doc.SetBarcodeData(undefined, value) to silently do nothing — no error is thrown, but the barcode data is never updated.

Fix

Replace the broken GetBarcodeIndex + SetBarcodeData approach with obj.Text = value, which correctly sets data for all barcode types including QR codes via IObject::SetText. This matches the working behavior from v2.2.0.

case ObjectTypes.Barcode:
    obj.Text = value;
    break;

Testing

Verified with Brother PT-P900W using .lbx templates containing QR code objects:

• QR code data is now correctly populated in both preview (getImageData) and print (print)
• Text, Image, and other object types continue to work as expected

[yeasir01]

Thanks for that. Could you provide a bit more detail? Specifically, what type of barcode was used, and a sample of the data for reference?