srag_printer 0.2.0

Flexible Flutter thermal printing package for PDF widgets, PDFs, and image frames over network, USB, and Bluetooth.

Changelog

0.2.0

• Breaking: removed the usb_serial dependency. Android USB discovery and UsbPrinterTransport moved to the new srag_printer_usb package; call SragPrinterUsb.register() to enable them. Apps that do not print over USB no longer pull in usb_serial, which does not build on Gradle 9.
• Added UsbPrinterBackend, the extension point srag_printer_usb registers.
• Added Classic Bluetooth (SPP) printing on Android. srag_printer is now a plugin with Android code: Bluetooth discovery lists every paired device with its BluetoothDeviceType, and paired devices that are not BLE-only (including built-in POS printers such as InnerPrinter) print through the new ClassicBluetoothPrinterTransport. BLE-only devices keep using BluetoothPrinterTransport.
• Fixed PdfWidgetRenderer letting widget build errors escape unwrapped; they are now reported as PrinterRenderException.
• Fixed Bluetooth discovery throwing on iOS: paired devices are only queried on Android.
• Fixed the first Bluetooth scan on iOS finding nothing: discovery waits up to three seconds for the adapter to leave the unknown state.

0.1.0

• Initial independent srag_printer package scaffold.
• Added printing from PDF widgets, PDF bytes, and image frames.
• Added generic discovery models and platform-aware discovery entry point.
• Added network, USB, Bluetooth BLE, Windows driver, and Windows serial transports.
• Added generic receipt PDF widgets and documentation.