PrinterManager

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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.
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printerAttributes will have the attributes of the print.
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printerListener will receive the PrinterListener interface methods
Usage
Code Example
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HashMap<String, Integer> printerAttributes = new HashMap<>();
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printerAttributes.put(PrinterAttributes.KEY_ALIGN, PrinterAttributes.VAL_ALIGN_CENTER);
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printerAttributes.put(PrinterAttributes.KEY_TYPEFACE, 1);
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printerAttributes.put(PrinterAttributes.KEY_TEXT_SIZE, 20);
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String textToPrint = "TEXT TO PRINT";
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PrinterManager.getInstance()
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               .printText(textToPrint, printerAttributes);
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Last modified 2yr ago
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