thermal_printer_flutter 2.0.0+3

A Flutter plugin for thermal printing supporting Bluetooth, USB, and Network printers across Android, iOS, macOS, Windows, Linux, and Web platforms. Easy to use and integrates with esc_pos_utils for g [...]

0.1.0

• BREAKING: Renamed PrinterType.bluethoot to PrinterType.bluetooth. Update call sites from PrinterType.bluethoot to PrinterType.bluetooth. Serialized data using the legacy "bluethoot" string is still parsed by Printer.fromMap.
• Added USB printing support on macOS (via CUPS)
• Added automatic network printer discovery (discoverNetworkPrinters)
• Fixed getPlatformVersion to return the platform version through the method channel
• Fixed double-result crash on Bluetooth (BLE) for iOS/macOS
• Added a copies parameter to printBytes — copies are now built into the byte stream and sent as a single job, behaving identically on every platform. Prefer this over calling printBytes in a loop.
• Print jobs are now serialized internally, so concurrent/looped printBytes calls never overlap (a common cause of "runaway"/duplicated printing).
• Fixed runaway/multiple-copies on Windows: the spooler now uses RAW datatype and forces dmCopies = 1, so a driver "Copies" default can no longer multiply RAW jobs. Partial/aborted jobs are deleted from the spooler instead of being sent truncated.
• Byte payloads are now sent as Uint8List across all platforms
• Fixed flipHorizontal on screenShotWidget: it was accepted but never applied; the captured image is now actually mirrored.
• Improved image print quality: screenShotWidget now downsamples with area-average interpolation and applies Floyd–Steinberg dithering by default (dither: true), greatly improving logos/photos/grayscale on 1-bit thermal printers. Pass dither: false for the previous threshold-only path (sharper for pure text).
• Changed the default screenShotWidget width from 550 to 576 (80 mm @ 203 dpi, a multiple of 8) so the bitmap matches the printer head without rescaling. Use 384 for 58 mm.
• Android Bluetooth writes now run on a background thread (single write + flush) instead of blocking the platform/UI thread. This removes the freeze/jank (and ANR risk) during long prints. The whole payload is sent in one write — chunked writes were found to make printing stutter/band — so output stays smooth; raw SPP throughput is gated by the printer, not the plugin.
• Fixed Bluetooth connect failing on Android with "MAC address is required": the Android plugin sent the device address under the address key while Dart expected bleAddress, so the address arrived empty. Android now sends bleAddress (matching iOS/macOS) and the Dart parser accepts both keys.
• Hardened Bluetooth printer parsing: a malformed paired-device string no longer drops the whole list (RangeError).
• BluetoothPrinterRepository reconnect delay is now configurable (was a hardcoded 500 ms).
• Network discovery now only auto-detects genuinely private subnets (correct 172.16.0.0/12 range) and prunes dead pooled connections.
• Windows printer status descriptions are now in English (was mixed Portuguese).
• Removed unused internal platform helper.
• USB isConnected now returns true (connectionless model) instead of relying on an unimplemented/meaningless channel call; use getPrinterStatus for real USB health.
• Documented the writebytes wire contract (USB sends a Map, Bluetooth sends raw bytes — this is how macOS routes USB-via-CUPS vs BLE) and locked it with tests.
• Documented platform/feature limitations in the README (status, isConnected, single BLE connection, discovery false positives).
• Network discovery can now confirm a candidate is a real printer via an ESC/POS DLE EOT probe on port 9100: NetworkPrinterInfo.confirmed flags the result, and discoverNetworkPrinters(requireConfirmation: true) returns only confirmed printers (default false keeps the previous candidate-listing behavior).
• Removed dead printstring/printBytes method handlers from the iOS/macOS plugins (never invoked from Dart).
• Fixed Bluetooth discovery on iOS: the Dart layer lists printers via the pairedbluetooths channel method, but the iOS plugin only handled getPrinters, so getPrinters(printerType: bluetooth) always returned an empty list on iOS. iOS now handles pairedbluetooths (runs a short BLE scan).
• Added dispose() to the plugin to close pooled network connections (prevents leaked sockets on teardown).
• Removed the dead getPrinters channel handler from the Windows, macOS, iOS and Android plugins (Dart calls usbprinters/pairedbluetooths directly).
• Implemented getPrinterStatus on macOS via CUPS (printer-state / printer-state-reasons), so USB printer status now works on macOS as well as Windows.
• Added a GitHub Actions CI workflow: analyze + test (coverage) and example builds for iOS, macOS, Android, Windows and Linux.
• Added unit test coverage (100% of the Dart library).

0.0.1+6

• Improved printing performance via Bluetooth

0.0.1+5

• Feature add textScaleFactor on Screenshot

0.0.1+4

• Dependency Compatibility

0.0.1+3

• Resolve bug align in printers bluethoot
• Feature Add Screenshot widget

0.0.1+2

• Update readme

0.0.1

• Release