CanvasApi class abstract
画布打印接口 构建画布内容按画布区域打印(标签、黑标、针式类型打印机) SdkException返回API调用异常如不支持此接口 RenderError回调API执行期间的异常如打印机无法处理
- Implementers
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
initCanvas(
LabelStyle style) → Future< void> - 初始化画布. 指定打印标签的画布大小、基础格式
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
printCanvas(
int count, PrintResult listener) → Future< void> - 开始打印画布内容
-
renderArea(
AreaStyle format) → Future< void> - 在画布上绘制图形.
-
renderBarCode(
String code, BarcodeStyle style) → Future< void> - 在画布上绘制条形码.
-
renderBitmap(
Uint8List bitmap, BitmapStyle style) → Future< void> - 在画布上绘制位图.
-
renderQrCode(
String text, QrStyle style) → Future< void> - 在画布上绘制二维码.
-
renderText(
String text, TextStyle style) → Future< void> - 在画布上绘制文本内容.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited