BlueThermalCompatPrinter class

Main compatibility facade. Collects commands into an ESC/POS builder and flushes them when requested (or on cut). Not a full re-implementation but enough for common migration scenarios.

Properties

defaultRole ↔ PosPrinterRole

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

ensureDevice({required PosPrinterRole role, required PrinterDevice device}) → Future<void>

Provide a printer device mapping before printing if not already set via your app logic.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

openCashDrawer() → void

Cash drawer pulse.

paperCut() → void

Paper cut.

printBarcode(String data) → void

Barcode convenience (Code128).

printCustom(String text, int size, int align) → void

Adds a custom text line using similar signature: text, size, align.

printImageAsset(String assetPath, {bool center = true, int threshold = 160, int? maxWidth, bool preferBitImage = false}) → Future<void>

Convenience: load an asset image and print (auto raster). Optionally specify threshold and explicit maxWidth (dots). Falls back to legacy bit-image if raster result is empty.

printImageBytes(Uint8List bytes, {bool center = true, bool preferBitImage = false, int threshold = 160}) → Future<void>

Prints raw image bytes if already ESC/POS formatted. For migration, this USED TO expect pre‑encoded ESC/POS raster. Now it auto-detects:

printLeftRight(String left, String right, int size) → void

Print a left/right aligned line (approximation using two separate draws). Original plugin tried to fit both sides in one line width; here we just print left then right with alignment adjustments.

printLogoAndLines({String? assetLogoPath, int logoThreshold = 160, int? logoMaxWidth, bool preferBitImage = false, List<CompatLine> lines = const []}) → Future<void>

Combined convenience: prints (optional) asset logo followed by a list of text lines (each tuple: text, size, align). This reduces Bluetooth round‑trips versus calling multiple small printCustom and image calls separately.

printNewLine() → void

Simple newline feed.

printQRcode(String data) → void

QR code convenience.

setPaper80mm(bool is80) → void

Set paper size quickly (true = 80mm / 48 chars, false = 58mm / 32 chars)

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

instance → BlueThermalCompatPrinter

final