Class: Device::Printer

Inherits:
Object
  • Object
show all
Defined in:
lib/device/printer.rb

Constant Summary collapse

RET_OK = 
0
ERR_PRN_BUSY =

Printer busy

-3701 # Printer busy
ERR_PRN_PAPEROUT =

Out of paper

-3702 # Out of paper
ERR_PRN_WRONG_PACKAGE =

The format of print data packet error

-3703 # The format of print data packet error
ERR_PRN_OVERHEAT =

Printer over heating

-3704 # Printer over heating
ERR_PRN_OUTOFMEMORY =

The print data is too large, and exceeds the buffer length.

-3705 # The print data is too large, and exceeds the buffer length.
ERR_PRN_OVERVOLTAGE =

Voltage is too high.

-3706 # Voltage is too high.
ERR_INVALID_PARAM =

Invalid parameter.

-1003 # Invalid parameter.
ERR_DEV_NOT_EXIST =

Device does not exist.

-1004 # Device does not exist.
ERR_DEV_BUSY =

Device is busy.

-1005 # Device is busy.
ERR_FONT_NOT_EXIST =

Font does not exist.

-1008 # Font does not exist.
DEFAULT_SINGLE_WIDTH = 
10
DEFAULT_SINGLE_HEIGHT = 
21
DEFAULT_MULTI_WIDTH = 
10
DEFAULT_MULTI_HEIGHT = 
21
BMP_SUCCESS = 
0
BMP_FILE_ERROR = 
-1
BMP_NOT_MONOCHROME = 
-3
BMP_INVALID_WIDTH = 
-4
BMP_LSEEK_FAILED = 
-5

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.multi_height ⇒ Object

Returns the value of attribute multi_height.



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# File 'lib/device/printer.rb', line 32

def multi_height
  @multi_height
end

.multi_width ⇒ Object

Returns the value of attribute multi_width.



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# File 'lib/device/printer.rb', line 32

def multi_width
  @multi_width
end

.single_height ⇒ Object

Returns the value of attribute single_height.



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# File 'lib/device/printer.rb', line 32

def single_height
  @single_height
end

.single_width ⇒ Object

Returns the value of attribute single_width.



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# File 'lib/device/printer.rb', line 32

def single_width
  @single_width
end

Class Method Details

.adapter ⇒ Object 



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# File 'lib/device/printer.rb', line 27

def self.adapter
  Device.adapter::Printer
end

.check ⇒ Fixnum

Check printer status, useful for paper check.



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# File 'lib/device/printer.rb', line 208

def self.check
  self.adapter.check
end

.close ⇒ NilClass

Closes the printer.



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# File 'lib/device/printer.rb', line 86

def self.close
  self.adapter.close
end

.font(path) ⇒ Fixnum

Selects print font.



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# File 'lib/device/printer.rb', line 97

def self.font(path)
  self.adapter.font(path)
end

.level=(value) ⇒ NilClass

Sets printing gray level.

􏰀 Level =0, reserved, 􏰀 Level =1, default level, normal print slip, 􏰀 Level =2, reserved, 􏰀 Level =3, two-layer thermal printing, 􏰀 Level =4, two-layer thermal printing, higher gray level than 3, 􏰀 The default level is 1. 􏰀 The illegal value does not change current settings.



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# File 'lib/device/printer.rb', line 114

def self.level=(value)
  self.adapter.level = value
end

.open ⇒ Fixnum

Check printer status, useful for paper check.



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# File 'lib/device/printer.rb', line 72

def self.open
  self.adapter.open
end

.paper? ⇒ TrueClass, FalseClass

Check if printer has paper



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# File 'lib/device/printer.rb', line 216

def self.paper?
  if self.check == ERR_PRN_PAPEROUT
    false
  else
    true
  end
end

.paperfeed ⇒ NilClass

Feeds printing paper.



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# File 'lib/device/printer.rb', line 141

def self.paperfeed
  self.adapter.feed
end

.print(string) ⇒ NilClass

Write text on print buffer.



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# File 'lib/device/printer.rb', line 150

def self.print(string)
  self.size(self.single_width, self.single_height, self.multi_width, self.multi_height)
  self.adapter.print(string)
end

.print_barcode(code) ⇒ Integer

Print barcode as bmp image



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# File 'lib/device/printer.rb', line 196

def self.print_barcode(code)
  self.adapter.print_barcode(code)
end

.print_big(string) ⇒ NilClass

Write text on print buffer changing the size only for this print.

Big size is  (24, 64, 64, 64)



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# File 'lib/device/printer.rb', line 170

def self.print_big(string)
  self.size(16, 32, 16, 32)
  self.adapter.print(string)
end

.print_bmp(path) ⇒ Integer

Print bmp file.

Details: Bitmap data is generated as monochromatic, bmp format. Printing bitmap size limit up to 384 pixels in width, spocket with 180 pixels and the height is unlimited. If the bitmap width is larger than the limit of the printer, then it will be sliced on the right side. If the data packet is too long, then this function will remove the LOGO message.



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# File 'lib/device/printer.rb', line 186

def self.print_bmp(path)
  self.adapter.print_bmp(path)
end

.puts(string) ⇒ NilClass

Write text on print buffer.



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# File 'lib/device/printer.rb', line 160

def self.puts(string)
  self.adapter.puts(string)
end

.reset ⇒ NilClass

Restore the printer default settings and clear the print buffer data.



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# File 'lib/device/printer.rb', line 79

def self.reset
  self.adapter.reset
end

.size(singlecode_width = DEFAULT_SINGLE_WIDTH, singlecode_height = DEFAULT_SINGLE_HEIGHT, multicode_width = DEFAULT_MULTI_WIDTH, multicode_height = DEFAULT_MULTI_HEIGHT) ⇒ NilClass

Define size, in pixel, of printing

(For non-monospaced font, width of each character may not meet the settings).

The value ranges from 8 to 64.



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# File 'lib/device/printer.rb', line 131

def self.size(singlecode_width=DEFAULT_SINGLE_WIDTH,
               singlecode_height=DEFAULT_SINGLE_HEIGHT,
               multicode_width=DEFAULT_MULTI_WIDTH,
               multicode_height=DEFAULT_MULTI_HEIGHT)
  self.adapter.size(singlecode_width, singlecode_height, multicode_width, multicode_height)
end

.start(singlecode_width = DEFAULT_SINGLE_WIDTH, singlecode_height = DEFAULT_SINGLE_HEIGHT, multicode_width = DEFAULT_MULTI_WIDTH, multicode_height = DEFAULT_MULTI_HEIGHT) ⇒ Fixnum

Initialize Printer device.



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# File 'lib/device/printer.rb', line 52

def self.start(singlecode_width=DEFAULT_SINGLE_WIDTH,
               singlecode_height=DEFAULT_SINGLE_HEIGHT,
               multicode_width=DEFAULT_MULTI_WIDTH,
               multicode_height=DEFAULT_MULTI_HEIGHT)

  self.single_width  = singlecode_width
  self.single_height = singlecode_height
  self.multi_width   = multicode_width
  self.multi_height  = multicode_height

  self.adapter.start(singlecode_width, singlecode_height, multicode_width, multicode_height)
end