PrinterManager

Overview

PrinterManager is the class responsible for enabling printing on Cielo machines and it uses the singleton pattern to guarantee a unique instance of PrinterManager.

Atributes

The attributes will be inserted into the hashMap and will be used at the time of printing

Used in alignment - KEY_ALIGN

Name

Description

VAL_ALIGN_CENTER

Align to center

VAL_ALIGN_LEFT

Align to left

VAL_ALIGN_RIGHT

Align to right

Other features

Name

Description

KEY_TEXT_SIZE

Text size, must be an integer value

KEY_TYPEFACE

Text font, must be an integer between 0 and 8, where each value is a different font

KEY_MARGIN_LEFT

Left margin, must be an integer value

KEY_MARGIN_RIGHT

Right margin, must be an integer value

KEY_MARGIN_TOP

Top margin, must be an integer value

KEY_MARGIN_BOTTOM

Bottom margin, must be an integer value

KEY_LINE_SPACE

Spacing between consecutive lines, must be an integer value

KEY_WEIGHT

Used when printing multiple columns, to choose the weight of each column, must be an integer value

Methods

Name

Description

getInstance()

Creates a new instance or returns the instance previously created.

printText(String textToPrint, Map<String, Integer> printerAttributes)

printText(String textToPrint, Map<String, Integer> printerAttributes, PrinterListener printerListener)

Prints the text received in the textToPrint parameter.

printerAttributes will have the attributes of the print.

printerListener will receive the PrinterListener interface methods

Usage

Code Example
HashMap<String, Integer> printerAttributes = new HashMap<>();
printerAttributes.put(PrinterAttributes.KEY_ALIGN, PrinterAttributes.VAL_ALIGN_CENTER);
printerAttributes.put(PrinterAttributes.KEY_TYPEFACE, 1);
printerAttributes.put(PrinterAttributes.KEY_TEXT_SIZE, 20);
String textToPrint = "TEXT TO PRINT";
PrinterManager.getInstance()
.printText(textToPrint, printerAttributes);