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n07070
2026-05-21 02:57:27 +02:00
parent f52d7493c8
commit d2f670bb68
8 changed files with 209 additions and 155 deletions
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81
src/printer.py
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@@ -1,10 +1,14 @@
# import brother_ql
from time import sleep
import os.path
from PIL import Image, ImageEnhance
import numpy as np
# Importing the module to manage the connection to the printer.
import escpos.printer
# import brother_ql
from time import sleep, gmtime, strftime
import os.path
from PIL import Image, ImageEnhance, ImageOps
import numpy as np
class Printer(object):
"""
@@ -75,10 +79,14 @@ class Printer(object):
try:
# This also calls open(), which we need to close()
# or else the device will appear as busy.
p = escpos.printer.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
p = escpos.printer.Usb(
self.device_id, self.vendor_id, 0, profile="TM-P80"
)
except Exception as e:
self.app.logger.error(
"The USB device is not plugged in, trying again %s : %s",waiting_elapsed, str(e)
"The USB device is not plugged in, trying again %s : %s",
waiting_elapsed,
str(e),
)
pass
@@ -87,7 +95,10 @@ class Printer(object):
self.ready = True
self.app.logger.debug("Printer online !")
except Exception as e:
self.app.logger.error("Error while getting the printer online %s : %s",waiting_elapsed, str(e)
self.app.logger.error(
"Error while getting the printer online %s : %s",
waiting_elapsed,
str(e),
)
pass
@@ -128,8 +139,10 @@ class Printer(object):
def _print_sms(self, msg, signature="", bold=False):
if not isinstance(msg,str):
self.app.logger.error("It is not possible to print a " + str(type(msg)) + ", only strings.")
if not isinstance(msg, str):
self.app.logger.error(
"It is not possible to print a " + str(type(msg)) + ", only strings."
)
raise ValueError
# We make sure that the signature is not something too goofy
@@ -168,7 +181,9 @@ class Printer(object):
self.printer.close()
except Exception as e:
self.app.logger.error("Unable to print because : " + str(e))
raise RuntimeError("Unable to print a SMS, the printer couldn't do it.") from e
raise RuntimeError(
"Unable to print a SMS, the printer couldn't do it."
) from e
self.app.logger.info("Printed text")
return True
@@ -201,7 +216,9 @@ class Printer(object):
self.app.logger.debug("Proccessing the image")
path = _process_image(self, path)
except RuntimeError as e:
self.app.logger.error("Error while processing the image, aborting print : %s",str(e))
self.app.logger.error(
"Error while processing the image, aborting print : %s", str(e)
)
raise e
else:
self.app.logger.warning("Not proccessing the image")
@@ -226,7 +243,9 @@ class Printer(object):
try:
self.printer.close()
except Exception as e:
self.app.logger.error("Could not close the printer connexion %s", str(e))
self.app.logger.error(
"Could not close the printer connexion %s", str(e)
)
raise RuntimeError("Could not close the printer connexion. ") from e
self.app.logger.info("Printed a picture")
@@ -261,11 +280,13 @@ class Printer(object):
def print_task(self, task_type, data):
"""Execute actual print based on task type"""
match (task_type.value):
case ("text"):
self._print_sms(data["txt"],signature=data["sign"])
case ("image"):
self._print_img(data["img"], signature=data["sign"],process=data["process"])
case ("cut"):
case "text":
self._print_sms(data["txt"], signature=data["sign"])
case "image":
self._print_img(
data["img"], signature=data["sign"], process=data["process"]
)
case "cut":
self._cut()
case _:
raise RuntimeError("This task type is not supported")
@@ -324,6 +345,7 @@ def _process_image(self, path):
return jpeg_path
def discover_printers():
"""
We try to find all the connected printers ( 0 or n ) to this system.
@@ -336,8 +358,8 @@ def discover_printers():
04f9 Brother Industries, Ltd
"""
def find_and_parse_borther_ql_printer():
def find_and_parse_borther_ql_printer():
## We might be able to no use this because there is a `discover` command in https://github.com/pklaus/brother_ql#usage
@@ -352,18 +374,18 @@ def find_and_parse_borther_ql_printer():
for backend_name in ["pyusb", "linux_kernel"]:
try:
#print(f"Trying backend: {backend_name}")
# print(f"Trying backend: {backend_name}")
backend = backend_factory(backend_name)
available_devices = backend["list_available_devices"]()
#print(f"Found {len(available_devices)} devices with {backend_name} backend")
# print(f"Found {len(available_devices)} devices with {backend_name} backend")
for printer in available_devices:
#print(f"Found device: {printer}")
# print(f"Found device: {printer}")
identifier = printer["identifier"]
parts = identifier.split("/")
if len(parts) < 4:
#print(f"Skipping device with invalid identifier format: {identifier}")
# print(f"Skipping device with invalid identifier format: {identifier}")
continue
protocol = parts[0]
@@ -373,7 +395,7 @@ def find_and_parse_borther_ql_printer():
try:
vendor_id, product_id = device_info.split(":")
except ValueError:
#print(f"Invalid device info format: {device_info}")
# print(f"Invalid device info format: {device_info}")
continue
# Default model
@@ -386,9 +408,9 @@ def find_and_parse_borther_ql_printer():
if m.product_id == product_id_int:
model = m.identifier
break
#print(f"Matched printer model: {model}")
# print(f"Matched printer model: {model}")
except ValueError:
#print(f"Invalid product ID format: {product_id}")
# print(f"Invalid product ID format: {product_id}")
continue
printer_info = {
@@ -400,15 +422,16 @@ def find_and_parse_borther_ql_printer():
"product_id": product_id,
"serial_number": serial_number,
}
#print(f"Found printer: {printer_info}")
# print(f"Found printer: {printer_info}")
return printer_info
except Exception as e:
#print(f"Error with backend {backend_name}: {str(e)}")
# print(f"Error with backend {backend_name}: {str(e)}")
continue
print("No Brother QL printer found")
return None
def fint_and_parse_epson_printer():
pass
pass