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23
README.md
23
README.md
@@ -15,6 +15,7 @@ To make this project work, you will need :
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|||||||
- A Thermal Printer :
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- A Thermal Printer :
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||||||
- I used *Adafruit's thermal printer* at first, but it broke down. You can get it [here](https://www.adafruit.com/product/597).
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- I used *Adafruit's thermal printer* at first, but it broke down. You can get it [here](https://www.adafruit.com/product/597).
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- I then used an *EPSON TM-T2OIII*. It's expensive, but it's also high quality, and has better CUPS and specific library support.
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- I then used an *EPSON TM-T2OIII*. It's expensive, but it's also high quality, and has better CUPS and specific library support.
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- Sometime after, a friend leant me a *Brother QL-650TD* to add support for this type of printer.
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- A Raspberry Pi or any computer with USB or Serial.
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- A Raspberry Pi or any computer with USB or Serial.
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- Some electric wires.
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- Some electric wires.
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- Some knowledge of the command line,
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- Some knowledge of the command line,
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||||||
@@ -37,13 +38,15 @@ You can also get some information from [here](https://learn.adafruit.com/mini-th
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||||||
LittlePrynter itself does not require any other software than the ones installed with it, i.e the ones listed in the `pyproject.toml` file.
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LittlePrynter itself does not require any other software than the ones installed with it, i.e the ones listed in the `pyproject.toml` file.
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||||||
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||||||
The version for the EPSON TM-T20III uses a library called `python-escpos`, which doesn't need a CUPS driver or anything else. It's included in the Python dependencies.
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The project supports EPSON label printers as well as Brother label printers, and you can try to adapt it for other printers. For example, using `adafruit-thermal`.
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||||||
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||||||
The project only supports the EPSON printer, but you can try to adapt it for other printers. For example, using `adafruit-thermal`, or `brother-ql`.
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For the EPSON TM-T20III, LittlePrynter uses a library called `python-escpos`, which doesn't need a CUPS driver or anything else. It's included in the Python dependencies. For the Brother-QL, we use the `brother-ql` library, which is also included.
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||||||
### Install & setup the project :
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### Install & setup the project :
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||||||
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||||||
Theses commands will copy the software on your computer, go into the directory, then activate a virtual environnement and install all of the project's dependecies.
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We use [Poetry](https://python-poetry.org/) to manage the Python environnement and packages. You will need to install it on your computer to install LittlePrynter.
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||||||
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The following commands will copy the software on your computer, go into the directory, then activate a virtual environnement and install all of the project's dependecies.
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||||||
```
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```
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$ git clone https://git.n07070.xyz/n07070/LittlePrynter
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$ git clone https://git.n07070.xyz/n07070/LittlePrynter
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@@ -69,6 +72,8 @@ $ flask run --cert=adhoc
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The `--cert=adhoc` argument will make LittlePrinter accessible in HTTPS with a [self-signed SSL certificate](https://en.wikipedia.org/wiki/Self-signed_certificate). This provides a free and easy way to use HTTPS, but does not provide any trust value. It is, on the other hand, a good way to access the webcam in developpement mode or on a local network, because a HTTPS connexion is required by browsers to access the needed APIs.
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The `--cert=adhoc` argument will make LittlePrinter accessible in HTTPS with a [self-signed SSL certificate](https://en.wikipedia.org/wiki/Self-signed_certificate). This provides a free and easy way to use HTTPS, but does not provide any trust value. It is, on the other hand, a good way to access the webcam in developpement mode or on a local network, because a HTTPS connexion is required by browsers to access the needed APIs.
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You can also use the `run.sh` for this.
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This command should start a web server with which you can test your configuration. If you plan on exposing your printer to the Internet, and give it an IP / URL, _please, please, please_, don't run it this way. Look at Flask's documentation and read about running a production server. It's a little more work, but it will prevent your computer/server being hacked in too easily.
|
This command should start a web server with which you can test your configuration. If you plan on exposing your printer to the Internet, and give it an IP / URL, _please, please, please_, don't run it this way. Look at Flask's documentation and read about running a production server. It's a little more work, but it will prevent your computer/server being hacked in too easily.
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||||||
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||||||
Voilà !
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Voilà !
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||||||
@@ -79,6 +84,16 @@ Your contributions are very much welcome ! You can either request an account on
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|||||||
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||||||
Please also say if you had a printer to test your code, and which printer you've been using.
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Please also say if you had a printer to test your code, and which printer you've been using.
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||||||
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||||||
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### Code structure
|
||||||
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||||||
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The app is written around the Flask framework. You can start by looking at the code in the `src/` folder, in the `main.py` file. There, you will see that a few classes are initialized. In general, they are two parts to the program :
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||||||
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||||||
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The Web pages and the API, which are the user-facing parts. This is with what the users will interact, and define how the program is going to be used. The web pages are renderer from the `include/` folder where Jinj2 templates are defined.
|
||||||
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||||||
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The Worker and Printer Queue are the internal parts. When a new thing needs to be printed, usually sent from the Web or API interfaces, a new Task of the type of the document is created, and added to a print queue. Then, a Worker thread looks up the state of the queue every so often and picks jobs to execute on the printers connected to the system.
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||||||
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||||||
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The last part of the program is the Raspberry Pi class, that handles to Photomaton mode, which handles button presses, and LED indicator and a flash.
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||||||
|
|
||||||
### Linting
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### Linting
|
||||||
|
|
||||||
If you want to contribute code, please make sure to lint the project before commiting. This helps the code keep a general structure, and avoids some commons erros and mistakes.
|
If you want to contribute code, please make sure to lint the project before commiting. This helps the code keep a general structure, and avoids some commons erros and mistakes.
|
||||||
@@ -120,7 +135,7 @@ If you liked this project, feel free to support my work !
|
|||||||
- [A link to buy one in Europe](https://rlx.sk/sk/various-boards/1829-mini-thermal-receipt-printer-adafruit-597.html)
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- [A link to buy one in Europe](https://rlx.sk/sk/various-boards/1829-mini-thermal-receipt-printer-adafruit-597.html)
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||||||
- [Another link to buy one, direct from factory](https://www.cashinotech.com/csn-a2-58mm-mini-panel-thermal-receipt-printer_p11.html)
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- [Another link to buy one, direct from factory](https://www.cashinotech.com/csn-a2-58mm-mini-panel-thermal-receipt-printer_p11.html)
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||||||
- [Diagnostickoeur](https://framagit.org/stickoeur/diagnostickoeur), another printer software mainly around Brother QL printers.
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- [Diagnostickoeur](https://framagit.org/stickoeur/diagnostickoeur), another printer software mainly around Brother QL printers.
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||||||
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- [FaxTheSystem](https://github.com/hackstub/faxthesystem/tree/main), another printer software, also around an Epson TM printer
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||||||
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|
||||||
## Licence
|
## Licence
|
||||||
|
|
||||||
|
|||||||
@@ -1,13 +1,28 @@
|
|||||||
# Configuration file the LittlePrynter
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# Configuration file the LittlePrynter
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||||||
|
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||||||
[defaults]
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[defaults]
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||||||
signature = "Anonymous"
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signature = ""
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||||||
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|
||||||
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|
||||||
# Printer settings
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# Printer settings
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||||||
[printer]
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[printer]
|
||||||
vendor_id = 0x04b8
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|
||||||
device_id = 0x0e28
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|
||||||
upload_folder = "src/static/uploads"
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upload_folder = "src/static/uploads"
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||||||
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# How long do we wait before giving up on waiting for a printer connexion
|
||||||
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waiting_time = 5
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||||||
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||||||
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[printer.epson]
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||||||
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# Configurations for EPSON printers
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||||||
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profile = "TM-T20III"
|
||||||
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label_type = 80 # 80 or 58 ( label width in mm )
|
||||||
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align_text = "center"
|
||||||
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text_max_length = 4096
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||||||
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signature_max_length = 256
|
||||||
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||||||
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[printer.brother]
|
||||||
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# Configurations for Brother printers
|
||||||
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label_type = "62" # See https://github.com/pklaus/brother_ql#usage for label types
|
||||||
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text_max_length = 4096
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||||||
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signature_max_length = 256
|
||||||
|
|
||||||
# Raspberry Pi Configuration
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# Raspberry Pi Configuration
|
||||||
[rpi]
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[rpi]
|
||||||
|
|||||||
@@ -5,8 +5,25 @@ signature = "Anonymous"
|
|||||||
|
|
||||||
# Printer settings
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# Printer settings
|
||||||
[printer]
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[printer]
|
||||||
vendor_id = "0x04b8"
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# Where do we upload the pictures and such
|
||||||
device_id = "0x0e28"
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upload_folder = "src/static/uploads"
|
||||||
|
|
||||||
|
# How long do we wait before giving up on waiting for a printer connexion
|
||||||
|
waiting_time = 5
|
||||||
|
|
||||||
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[printer.epson]
|
||||||
|
# Configurations for EPSON printers
|
||||||
|
profile = "TM-T20III"
|
||||||
|
label_type = 80 # 80 or 58 ( label width in mm )
|
||||||
|
align_text = "center"
|
||||||
|
text_max_length = 4096
|
||||||
|
signature_max_length = 256
|
||||||
|
|
||||||
|
[printer.brother]
|
||||||
|
# Configurations for Brother printers
|
||||||
|
label_type = 62 # See https://github.com/pklaus/brother_ql#usage for label types
|
||||||
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text_max_length = 4096
|
||||||
|
signature_max_length = 256
|
||||||
|
|
||||||
# Raspberry Pi Configuration
|
# Raspberry Pi Configuration
|
||||||
[rpi]
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[rpi]
|
||||||
|
|||||||
241
poetry.lock
generated
241
poetry.lock
generated
@@ -75,6 +75,25 @@ files = [
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|||||||
{file = "blinker-1.9.0.tar.gz", hash = "sha256:b4ce2265a7abece45e7cc896e98dbebe6cead56bcf805a3d23136d145f5445bf"},
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{file = "blinker-1.9.0.tar.gz", hash = "sha256:b4ce2265a7abece45e7cc896e98dbebe6cead56bcf805a3d23136d145f5445bf"},
|
||||||
]
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]
|
||||||
|
|
||||||
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[[package]]
|
||||||
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name = "brother-ql-inventree"
|
||||||
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version = "1.3"
|
||||||
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description = "Python package to talk to Brother QL label printers"
|
||||||
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optional = false
|
||||||
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python-versions = "*"
|
||||||
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groups = ["main"]
|
||||||
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files = [
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||||||
|
{file = "brother_ql_inventree-1.3-py3-none-any.whl", hash = "sha256:0f7e0d78bae04f44bcfe1010ed0d99f98d5b4db1d6179da242d5bd52bb0c9ea4"},
|
||||||
|
{file = "brother_ql_inventree-1.3.tar.gz", hash = "sha256:24335ca5f4b3444c692698b599459a7e6c4bd036dd580074c63d39382914fca3"},
|
||||||
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]
|
||||||
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|
||||||
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[package.dependencies]
|
||||||
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attrs = "*"
|
||||||
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click = "*"
|
||||||
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packbits = "*"
|
||||||
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pillow = ">=10.0.0"
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||||||
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pyusb = "*"
|
||||||
|
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||||||
[[package]]
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[[package]]
|
||||||
name = "certifi"
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name = "certifi"
|
||||||
version = "2026.4.22"
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version = "2026.4.22"
|
||||||
@@ -632,6 +651,18 @@ enabler = ["pytest-enabler (>=3.4)"]
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|||||||
test = ["jaraco.test (>=5.4)", "pytest (>=6,!=8.1.*)", "zipp (>=3.17)"]
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test = ["jaraco.test (>=5.4)", "pytest (>=6,!=8.1.*)", "zipp (>=3.17)"]
|
||||||
type = ["pytest-mypy (>=1.0.1) ; platform_python_implementation != \"PyPy\""]
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type = ["pytest-mypy (>=1.0.1) ; platform_python_implementation != \"PyPy\""]
|
||||||
|
|
||||||
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[[package]]
|
||||||
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name = "iniconfig"
|
||||||
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version = "2.3.1"
|
||||||
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description = "brain-dead simple config-ini parsing"
|
||||||
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optional = false
|
||||||
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python-versions = ">=3.10"
|
||||||
|
groups = ["main"]
|
||||||
|
files = [
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||||||
|
{file = "iniconfig-2.3.1-py3-none-any.whl", hash = "sha256:9121e2c1fdb355232495be3194c8dfe87ccc2d5dee45947b78e68f499790d7a7"},
|
||||||
|
{file = "iniconfig-2.3.1.tar.gz", hash = "sha256:67f4b9c50da0dedf52af349e7749a80a9057a5031199791b906c3bb3ae878960"},
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "isort"
|
name = "isort"
|
||||||
version = "8.0.1"
|
version = "8.0.1"
|
||||||
@@ -867,84 +898,84 @@ files = [
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|||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "numpy"
|
name = "numpy"
|
||||||
version = "2.4.5"
|
version = "2.4.6"
|
||||||
description = "Fundamental package for array computing in Python"
|
description = "Fundamental package for array computing in Python"
|
||||||
optional = false
|
optional = false
|
||||||
python-versions = ">=3.11"
|
python-versions = ">=3.11"
|
||||||
groups = ["main"]
|
groups = ["main"]
|
||||||
files = [
|
files = [
|
||||||
{file = "numpy-2.4.5-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:3176dc8ff71dbb593606f91a69ad0c3cd3303c7eb546af477370ab9edf760288"},
|
{file = "numpy-2.4.6-cp311-cp311-macosx_10_9_x86_64.whl", hash = "sha256:0280e0356c0829a18d9de1cb7eee50ec22ca639878d7240307ca0943d73cd2c4"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:1811150e5148f5a01a7cc282cb2f489b4a3050a773e173adb480e507bad3a3d7"},
|
{file = "numpy-2.4.6-cp311-cp311-macosx_11_0_arm64.whl", hash = "sha256:110f8b71aacb688ec69062bb7f6938a0f8acb01b7c1c4beb453c65b6d234584d"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-macosx_14_0_arm64.whl", hash = "sha256:0d63a780070871210853ba01e90b88f9b85cf2abf63a7f143d5127189265ddf6"},
|
{file = "numpy-2.4.6-cp311-cp311-macosx_14_0_arm64.whl", hash = "sha256:4cfe66903cc32a9921a6733d96b19bb6abf310397581bbad89c228f5abaf0ee8"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-macosx_14_0_x86_64.whl", hash = "sha256:0c6919cefafb3b76cd46a89dbb203bf1dd95529d2a6d09fef2d325d95d6a79d8"},
|
{file = "numpy-2.4.6-cp311-cp311-macosx_14_0_x86_64.whl", hash = "sha256:8155154c7c691289fe18f510b5d4657c68c67989f293f0535a91360392ff6538"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:d51efede1e58e8b11877536a5518f60e318d8ff69b89ad7b38ee5e431b24d772"},
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{file = "numpy-2.4.6-cp311-cp311-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:0ab0a9c4ffb1a6d95ef519fe4247dba8eb6b18ad93999f76b7f657039acabd47"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:07ce7e74da92d7c71b5df157b9758bcdd53d7fea10602154de3afd2b3ddc34dd"},
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{file = "numpy-2.4.6-cp311-cp311-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:89cd468399cfd2504718f0ba50e410dca55a170b61a02ad92bb18c8a65186e93"},
|
||||||
{file = "numpy-2.4.5-cp311-cp311-musllinux_1_2_aarch64.whl", hash = "sha256:d7828234a13185effb34979e146f9921f2a65dfbbe215e6dbb57d6478fc8e059"},
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{file = "numpy-2.4.6-cp311-cp311-musllinux_1_2_aarch64.whl", hash = "sha256:c2d37ab77531417474168eb79d6d80b14f821a966818505d03013d0833edb7a8"},
|
||||||
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{file = "numpy-2.4.5-cp314-cp314t-macosx_11_0_arm64.whl", hash = "sha256:6de2883e0d2c63eae1bab1a84b390dca74aabb3d20ea1f5d58f360853c83abf3"},
|
{file = "numpy-2.4.6-cp314-cp314t-macosx_11_0_arm64.whl", hash = "sha256:ece3d2cfe132e7d51f44a832b303895e6f2d499c5e74dfbdb06ee246147a304a"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-macosx_14_0_arm64.whl", hash = "sha256:06760fe73ae5005008748d182de612c733542af3cde063d532cd2127561b27be"},
|
{file = "numpy-2.4.6-cp314-cp314t-macosx_14_0_arm64.whl", hash = "sha256:e3e5193ef5a3dc73bceee50f7fdc2c90dbb76c42df8d8fae3d1067a583df579e"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-macosx_14_0_x86_64.whl", hash = "sha256:4b51a01745cb04cc19278482207444b4d30728ce91c28d27a3bfae5fc6ff24c7"},
|
{file = "numpy-2.4.6-cp314-cp314t-macosx_14_0_x86_64.whl", hash = "sha256:17f9ade344e7d9b464a084d69bcf18fc691cb1db67c62ed80820bf4926d78f0e"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:9a05636d7937d0936f271e5ba957fa8d746b5be3c2025caa1a2508f4fe521d40"},
|
{file = "numpy-2.4.6-cp314-cp314t-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:9cd5ffd25db4e7ba6a375693b3fc0fc1791ec636c17db3720da19bde7180ec43"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:14b86f56048ed09c3bbe48962a7dff077c2fd3274f8cf981800f3b38eac49cc3"},
|
{file = "numpy-2.4.6-cp314-cp314t-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:7d92c3819208a60205a12a245c91ad70cb0a85336659b19b834205573ac8456e"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-musllinux_1_2_aarch64.whl", hash = "sha256:130d58151c4db23e9fa860b84784e219a3aa3e030acc88a493ea37006c4dfd4c"},
|
{file = "numpy-2.4.6-cp314-cp314t-musllinux_1_2_aarch64.whl", hash = "sha256:e85b752a1e912b70eaad4fafbd4d1238007ab221de2009b9a2f5ae7461239895"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-musllinux_1_2_x86_64.whl", hash = "sha256:d475afc8cbe935ff5944f753d863bba774d7f4e1feaaa4102901e3e053ca5963"},
|
{file = "numpy-2.4.6-cp314-cp314t-musllinux_1_2_x86_64.whl", hash = "sha256:29cb7f67d10b479ff07c17d33e39f78c07f71c40ef30d63c153d340e96cd3fb4"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-win32.whl", hash = "sha256:27f4a6dc26353a860b348961b9aa9e009835688b435cfa105e873b8dc2c726f5"},
|
{file = "numpy-2.4.6-cp314-cp314t-win32.whl", hash = "sha256:260a5d70215b61ab4fadf5c7baacd64821842975eea312125ed3c39a6391b063"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-win_amd64.whl", hash = "sha256:76ac6e90f5e226011c88f9b7040a4bcae612518bc7e9adc127e697a13b28ad1a"},
|
{file = "numpy-2.4.6-cp314-cp314t-win_amd64.whl", hash = "sha256:81a1cca95ed5bb92aa8b10dd2cdc9a0d3853a50fad926c28b5d7e8ea54389627"},
|
||||||
{file = "numpy-2.4.5-cp314-cp314t-win_arm64.whl", hash = "sha256:7c392e2c1bf596701d3c6832be7567eab5d5b0a13865036c33365ee097d37f8b"},
|
{file = "numpy-2.4.6-cp314-cp314t-win_arm64.whl", hash = "sha256:0c9136e14ed34a9e343a31c533d78a9813a69a3148332bce5e9821cb2f996e66"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-macosx_10_15_x86_64.whl", hash = "sha256:6bf0bfc1c2e1db972e30b6cd3d4861f477f3af908b27799b239dc3cbe3eb4b95"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_10_15_x86_64.whl", hash = "sha256:55cced7c52e981362f708ad635198e97a752dfba412cc03c23bbf3bd8d5cd662"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-macosx_11_0_arm64.whl", hash = "sha256:73d664413fb97229149c4711ef56531a6fe8c15c1c2626b0bbe497b84c287e70"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_11_0_arm64.whl", hash = "sha256:d6da64deb6b8ed903e7560180a92f2d804ee1ba5eeb849ac2748b8c1aba1f6d7"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-macosx_14_0_arm64.whl", hash = "sha256:b35bee5ef99e8d227a07829bee2e864fcb65f7c157646fcd8ec8b4b45dd8b88f"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_14_0_arm64.whl", hash = "sha256:68a5124b13fa6cc2086764a20005d30bc0548146f7f5322f02fce212ca14317f"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-macosx_14_0_x86_64.whl", hash = "sha256:02981d0fc9f9ce147643d552966d47f329a02f7ecb3b113e84207242f20dfa83"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_14_0_x86_64.whl", hash = "sha256:948424b06129ce883307e8cff868c31396d8dc7630a59c61d70d98dbe70f222c"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:0e63caf31a1df06338ae63d999f7a33a675ced62eea9c9b02db4b1c1f45cff38"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:5dbbdb29840ca3d91ee0fece42fc29278886d908280bfec0a5846c6f901a3eb0"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:d8fc52b85a7b45e474be53eddf08e006d22e381a4e41bcde8e4aa08da0e7d198"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:8ad03c0965fb3c692200e74d458ca28c1dbb4ce96f9a479a8aa041ad5fabca02"},
|
||||||
{file = "numpy-2.4.5-pp311-pypy311_pp73-win_amd64.whl", hash = "sha256:40c71d50a4da1a7c317af419461052d3911a5770bfc5fd55baf52cc45e7a2c20"},
|
{file = "numpy-2.4.6-pp311-pypy311_pp73-win_amd64.whl", hash = "sha256:2803abfebfc990042cd494d8ce2d5f82e9d847af6d35ec486923aa19dbad5e73"},
|
||||||
{file = "numpy-2.4.5.tar.gz", hash = "sha256:ca670567a5683b7c1670ec03e0ddd5862e10934e92a70751d68d7b7b74ca7f9f"},
|
{file = "numpy-2.4.6.tar.gz", hash = "sha256:f3a3570c4a2a16746ac2c31a7c7c7b0c186b95ce902e33db6f28094ed7387dda"},
|
||||||
]
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
@@ -974,6 +1005,17 @@ files = [
|
|||||||
{file = "packaging-26.2.tar.gz", hash = "sha256:ff452ff5a3e828ce110190feff1178bb1f2ea2281fa2075aadb987c2fb221661"},
|
{file = "packaging-26.2.tar.gz", hash = "sha256:ff452ff5a3e828ce110190feff1178bb1f2ea2281fa2075aadb987c2fb221661"},
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "packbits"
|
||||||
|
version = "0.6"
|
||||||
|
description = "PackBits encoder/decoder"
|
||||||
|
optional = false
|
||||||
|
python-versions = "*"
|
||||||
|
groups = ["main"]
|
||||||
|
files = [
|
||||||
|
{file = "packbits-0.6.tar.gz", hash = "sha256:bc6b370bb34e04ac8cfa835e06c0484380affc6d593adb8009dd6c0f7bfff034"},
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "pep8"
|
name = "pep8"
|
||||||
version = "1.7.1"
|
version = "1.7.1"
|
||||||
@@ -1107,6 +1149,18 @@ files = [
|
|||||||
{file = "platformdirs-4.9.6.tar.gz", hash = "sha256:3bfa75b0ad0db84096ae777218481852c0ebc6c727b3168c1b9e0118e458cf0a"},
|
{file = "platformdirs-4.9.6.tar.gz", hash = "sha256:3bfa75b0ad0db84096ae777218481852c0ebc6c727b3168c1b9e0118e458cf0a"},
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "pluggy"
|
||||||
|
version = "1.7.0"
|
||||||
|
description = "plugin and hook calling mechanisms for python"
|
||||||
|
optional = false
|
||||||
|
python-versions = ">=3.10"
|
||||||
|
groups = ["main"]
|
||||||
|
files = [
|
||||||
|
{file = "pluggy-1.7.0-py3-none-any.whl", hash = "sha256:7dd7b0d8832ba3cb632c306926ded123429211b83641b35dc5c41ad2d34f9bec"},
|
||||||
|
{file = "pluggy-1.7.0.tar.gz", hash = "sha256:d1eaa46ebb595891b860ab086b4d09c8588af65ebd4361b8e8f4bb8920b90ba8"},
|
||||||
|
]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "pycparser"
|
name = "pycparser"
|
||||||
version = "3.0"
|
version = "3.0"
|
||||||
@@ -1171,6 +1225,21 @@ files = [
|
|||||||
{file = "pycryptodomex-3.23.0.tar.gz", hash = "sha256:71909758f010c82bc99b0abf4ea12012c98962fbf0583c2164f8b84533c2e4da"},
|
{file = "pycryptodomex-3.23.0.tar.gz", hash = "sha256:71909758f010c82bc99b0abf4ea12012c98962fbf0583c2164f8b84533c2e4da"},
|
||||||
]
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "pygments"
|
||||||
|
version = "2.21.0"
|
||||||
|
description = "Pygments is a syntax highlighting package written in Python."
|
||||||
|
optional = false
|
||||||
|
python-versions = ">=3.9"
|
||||||
|
groups = ["main"]
|
||||||
|
files = [
|
||||||
|
{file = "pygments-2.21.0-py3-none-any.whl", hash = "sha256:2363c69b61c4a97c838da3b130dcd6468f4848992b21a82f2a63ec34377137d9"},
|
||||||
|
{file = "pygments-2.21.0.tar.gz", hash = "sha256:610ca751c9bc2492b38eb9a38a7fbc93edbbb2d7182edaf34e66ae493dee5c8c"},
|
||||||
|
]
|
||||||
|
|
||||||
|
[package.extras]
|
||||||
|
windows-terminal = ["colorama (>=0.4.6)"]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "pylint"
|
name = "pylint"
|
||||||
version = "4.0.5"
|
version = "4.0.5"
|
||||||
@@ -1223,6 +1292,28 @@ files = [
|
|||||||
[package.extras]
|
[package.extras]
|
||||||
cp2110 = ["hidapi"]
|
cp2110 = ["hidapi"]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "pytest"
|
||||||
|
version = "9.2.0"
|
||||||
|
description = "pytest: simple powerful testing with Python"
|
||||||
|
optional = false
|
||||||
|
python-versions = ">=3.10"
|
||||||
|
groups = ["main"]
|
||||||
|
files = [
|
||||||
|
{file = "pytest-9.2.0-py3-none-any.whl", hash = "sha256:07acdcf88ec174f907dc01af70bf52d49b014bbab03faeeade31c96b18c2e588"},
|
||||||
|
{file = "pytest-9.2.0.tar.gz", hash = "sha256:97c4f3b1f3c7414aa36465e09b8220f1d03627993bd51b1282e193753c80557b"},
|
||||||
|
]
|
||||||
|
|
||||||
|
[package.dependencies]
|
||||||
|
colorama = {version = ">=0.4", markers = "sys_platform == \"win32\""}
|
||||||
|
iniconfig = ">=2"
|
||||||
|
packaging = ">=24"
|
||||||
|
pluggy = ">=1.6,<2"
|
||||||
|
pygments = ">=2.15"
|
||||||
|
|
||||||
|
[package.extras]
|
||||||
|
dev = ["argcomplete", "asynctest ; python_version < \"3.11\"", "attrs (>=23.1)", "coverage (>=7.5)", "hypothesis (>=6.75)", "mock", "numpy (>=1.26)", "pexpect (>=4.9)", "pytest-xdist (>=3.5)", "pyyaml", "requests", "setuptools", "xmlschema"]
|
||||||
|
|
||||||
[[package]]
|
[[package]]
|
||||||
name = "python-barcode"
|
name = "python-barcode"
|
||||||
version = "0.16.1"
|
version = "0.16.1"
|
||||||
@@ -1852,5 +1943,5 @@ h11 = ">=0.16.0,<1"
|
|||||||
|
|
||||||
[metadata]
|
[metadata]
|
||||||
lock-version = "2.1"
|
lock-version = "2.1"
|
||||||
python-versions = ">=3.14"
|
python-versions = ">=3.13"
|
||||||
content-hash = "fd3fb42c796aaaee4193f31df09bb4c74277855c489bf34a27c4bc1616851dfb"
|
content-hash = "7f8ddfbcbf88df2634e01dd4daf62ad54d1b97c279e3c4b478822fb5d4485647"
|
||||||
|
|||||||
@@ -7,7 +7,7 @@ authors = [
|
|||||||
]
|
]
|
||||||
license = "AGPLv3"
|
license = "AGPLv3"
|
||||||
readme = "README.md"
|
readme = "README.md"
|
||||||
requires-python = ">=3.14"
|
requires-python = ">=3.13"
|
||||||
dependencies = [
|
dependencies = [
|
||||||
"flask (>=3.1.3,<4.0.0)",
|
"flask (>=3.1.3,<4.0.0)",
|
||||||
"numpy (>=2.3.4)",
|
"numpy (>=2.3.4)",
|
||||||
@@ -42,6 +42,8 @@ dependencies = [
|
|||||||
"python-escpos (>=3.1,<4.0)",
|
"python-escpos (>=3.1,<4.0)",
|
||||||
"pep8 (>=1.7.1,<2.0.0)",
|
"pep8 (>=1.7.1,<2.0.0)",
|
||||||
"pylint (>=4.0.5,<5.0.0)",
|
"pylint (>=4.0.5,<5.0.0)",
|
||||||
|
"brother-ql-inventree (>=1.3,<2.0)",
|
||||||
|
"pytest (>=9.2.0,<10.0.0)",
|
||||||
]
|
]
|
||||||
|
|
||||||
[tool.poetry]
|
[tool.poetry]
|
||||||
|
|||||||
2
run.sh
Executable file
2
run.sh
Executable file
@@ -0,0 +1,2 @@
|
|||||||
|
eval $(poetry env activate)
|
||||||
|
export FLASK_DEBUG=True; export FLASK_APP=src/main.py && flask run --cert=adhoc --debug --no-debugger --host 0.0.0.0 --without-threads
|
||||||
327
src/main.py
327
src/main.py
@@ -1,7 +1,8 @@
|
|||||||
"""
|
"""
|
||||||
Welcome to the LittlePrynter's source code.
|
Welcome to the LittlePrynter's source code.
|
||||||
This program expose a web interface, with user authentification,
|
This program expose a web interface,
|
||||||
that makes it possible to print messages from the web.
|
that makes it possible to print messages from the web.
|
||||||
|
|
||||||
It also exposes a API, making it possible to print and interface
|
It also exposes a API, making it possible to print and interface
|
||||||
with much of the printer's abilities.
|
with much of the printer's abilities.
|
||||||
|
|
||||||
@@ -10,12 +11,14 @@ Then we build the API around Flask,
|
|||||||
Then we build the web interface, using the simple Jinja2 templating.
|
Then we build the web interface, using the simple Jinja2 templating.
|
||||||
|
|
||||||
We support two modes :
|
We support two modes :
|
||||||
|
|
||||||
The first is a simple mode, where a computer, connected to a thermal printer,
|
The first is a simple mode, where a computer, connected to a thermal printer,
|
||||||
runs this program and exposes a web interface that makes use of the client's camera
|
runs this program and exposes a web interface that makes use of the client's camera
|
||||||
The seconde is booth mode, where a Raspberry Pi is connected to a thermal printer,
|
|
||||||
a button and a flash.
|
The seconde is booth mode, where a Raspberry Pi is connected to
|
||||||
The web interface exists but may not be used, as the press of the button with take
|
a thermal printer, a button and a flash.
|
||||||
a picture and activate the flash while simply informing the web page.
|
The web interface exists but it's not needed, as the press of the button
|
||||||
|
takes a picture and activates the flash while simply informing the web page.
|
||||||
"""
|
"""
|
||||||
|
|
||||||
# Following are the librairies we import,
|
# Following are the librairies we import,
|
||||||
@@ -36,14 +39,17 @@ import werkzeug.exceptions
|
|||||||
from flask_socketio import SocketIO
|
from flask_socketio import SocketIO
|
||||||
from flask_limiter import Limiter
|
from flask_limiter import Limiter
|
||||||
from flask_limiter.util import get_remote_address
|
from flask_limiter.util import get_remote_address
|
||||||
from printer import Printer # The wrapper for the printer class
|
|
||||||
from raspberry import Raspberry # The Raspberry pi control Class
|
from raspberry import Raspberry # The Raspberry pi control Class
|
||||||
from web import Web # Wrapper for the web routes and API
|
from web import Web # Wrapper for the web routes and API
|
||||||
|
from print_queue import PrintQueue
|
||||||
|
from worker import PrintWorker
|
||||||
|
from printers import Printers
|
||||||
|
|
||||||
# Variables
|
# We create the main Flask object
|
||||||
|
|
||||||
app = Flask(__name__)
|
app = Flask(__name__)
|
||||||
socketio = SocketIO(app)
|
socketio = SocketIO(app, cors_allowed_origins="*")
|
||||||
|
|
||||||
|
# Global variables
|
||||||
ALLOWED_EXTENSIONS = {"png", "jpg", "jpeg", "gif", "webp"}
|
ALLOWED_EXTENSIONS = {"png", "jpg", "jpeg", "gif", "webp"}
|
||||||
|
|
||||||
# Load the configuration file
|
# Load the configuration file
|
||||||
@@ -70,11 +76,7 @@ except OSError as e:
|
|||||||
|
|
||||||
app.logger.debug("Config file loaded !")
|
app.logger.debug("Config file loaded !")
|
||||||
|
|
||||||
# Define the USB connections here.
|
|
||||||
vendor_id = configuration_file["printer"]["vendor_id"]
|
|
||||||
device_id = configuration_file["printer"]["device_id"]
|
|
||||||
UPLOAD_FOLDER = str(configuration_file["printer"]["upload_folder"])
|
UPLOAD_FOLDER = str(configuration_file["printer"]["upload_folder"])
|
||||||
|
|
||||||
try:
|
try:
|
||||||
os.mkdir(UPLOAD_FOLDER)
|
os.mkdir(UPLOAD_FOLDER)
|
||||||
app.logger.debug("Directory %s created successfully.", UPLOAD_FOLDER)
|
app.logger.debug("Directory %s created successfully.", UPLOAD_FOLDER)
|
||||||
@@ -82,50 +84,57 @@ except FileExistsError:
|
|||||||
app.logger.debug("Directory %s already exists.", UPLOAD_FOLDER)
|
app.logger.debug("Directory %s already exists.", UPLOAD_FOLDER)
|
||||||
except PermissionError:
|
except PermissionError:
|
||||||
app.logger.error("Permission denied: Unable to create %s", UPLOAD_FOLDER)
|
app.logger.error("Permission denied: Unable to create %s", UPLOAD_FOLDER)
|
||||||
exit(77)
|
sys.exit(77)
|
||||||
|
|
||||||
# Output the config file
|
# Output the config file
|
||||||
if os.getenv("LIPY_DEBUG") is True:
|
if not os.getenv("FLASK_DEBUG") is None and os.getenv("FLASK_DEBUG") is True:
|
||||||
pprint.pprint(configuration_file)
|
pprint.pprint(configuration_file)
|
||||||
|
|
||||||
# We define the app module used by Flask
|
# We define the app module used by Flask
|
||||||
app.secret_key = configuration_file["secrets"]["flask_secret_key"]
|
app.secret_key = configuration_file["secrets"]["flask_secret_key"]
|
||||||
app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
|
app.config["UPLOAD_FOLDER"] = UPLOAD_FOLDER
|
||||||
app.config["ALLOWED_EXTENSIONS"] = ALLOWED_EXTENSIONS
|
app.config["ALLOWED_EXTENSIONS"] = ALLOWED_EXTENSIONS
|
||||||
app.config["MAX_CONTENT_LENGTH"] = 10 * 1000 * 1000 # Maximum 3Mb for a file upload
|
app.config["MAX_CONTENT_LENGTH"] = 10 * 1000 * 1000 # Maximum 10Mb for a file upload
|
||||||
app.config["TEMPLATES_AUTO_RELOAD"] = True
|
app.config["TEMPLATES_AUTO_RELOAD"] = True
|
||||||
|
|
||||||
# Printer connection
|
# Queue creation
|
||||||
# Uses the class defined in the printer.py file
|
print_queue = PrintQueue(app)
|
||||||
printer = Printer(app, 0x04B8, 0x0E28)
|
|
||||||
printer.init_printer()
|
|
||||||
|
|
||||||
# Find out if we are running on a Raspberry Pi
|
# Find out if we are running on a Raspberry Pi
|
||||||
rpi = Raspberry(
|
rpi = Raspberry(print_queue, app, configuration_file)
|
||||||
printer,
|
|
||||||
app,
|
|
||||||
socketio,
|
|
||||||
configuration_file["rpi"]["button_gpio_port_number"],
|
|
||||||
configuration_file["rpi"]["indicator_gpio_port_number"],
|
|
||||||
configuration_file["rpi"]["flash_gpio_port_number"],
|
|
||||||
configuration_file["rpi"]["flash"],
|
|
||||||
)
|
|
||||||
|
|
||||||
RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
|
RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
|
||||||
|
|
||||||
|
|
||||||
# Web & API routes
|
# Web & API management
|
||||||
|
web = Web(app, print_queue)
|
||||||
|
|
||||||
web = Web(app, printer)
|
# Create a pool of printers
|
||||||
|
try:
|
||||||
|
# comment: Find all printers connected to the system
|
||||||
|
printers_pool = Printers(app, configuration_file)
|
||||||
|
except Exception as e:
|
||||||
|
app.logger.error("Could not create a pool of printers because %s", str(e))
|
||||||
|
sys.exit(-1)
|
||||||
|
# end try
|
||||||
|
|
||||||
if __name__ == "__main__":
|
# Start worker thread
|
||||||
app.run(debug=True, use_reloader=False, host="0.0.0.0", ssl_context="adhoc")
|
try:
|
||||||
|
worker = PrintWorker(app, print_queue, printers_pool=printers_pool)
|
||||||
|
worker.start()
|
||||||
|
except Exception as e:
|
||||||
|
app.logger.error("Could not start the worker because %s ", str(e))
|
||||||
|
sys.exit(-1)
|
||||||
|
|
||||||
|
# The rate limit
|
||||||
limiter = Limiter(
|
limiter = Limiter(
|
||||||
get_remote_address, app=app, default_limits=["1500 per day", "500 per hour"]
|
get_remote_address, app=app, default_limits=["1500 per day", "500 per hour"]
|
||||||
)
|
)
|
||||||
|
|
||||||
|
|
||||||
|
app.logger.info("🖶 Welcome to LittlePrynter !")
|
||||||
|
|
||||||
|
|
||||||
|
# General routes
|
||||||
@app.route("/")
|
@app.route("/")
|
||||||
@limiter.limit("1/second", override_defaults=False)
|
@limiter.limit("1/second", override_defaults=False)
|
||||||
def index():
|
def index():
|
||||||
@@ -142,6 +151,112 @@ def webcam():
|
|||||||
return render_template("webcam.html")
|
return render_template("webcam.html")
|
||||||
|
|
||||||
|
|
||||||
|
# Form treatement
|
||||||
|
@app.route("/web/print/sms", methods=["POST"])
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def web_print_sms():
|
||||||
|
"""Prints a short message on a printer"""
|
||||||
|
app.logger.debug("Printing an sms via web method")
|
||||||
|
|
||||||
|
try:
|
||||||
|
txt = request.form["txt"]
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
|
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
|
||||||
|
flash("Whoops, no forms submitted or missing signature : " + str(e), "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
try:
|
||||||
|
# comment: We try to get a signature
|
||||||
|
sign = request.form["signature"]
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
|
app.logger.warning(
|
||||||
|
"No signature found for this print, using default signature : %s ", str(e)
|
||||||
|
)
|
||||||
|
sign = configuration_file["defaults"]["signature"]
|
||||||
|
try:
|
||||||
|
do_cut = bool(request.form["cut"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
do_cut = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Clamp value between 1 and
|
||||||
|
many = max(1, min(int(request.form["many"]), 20))
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
many = 1
|
||||||
|
|
||||||
|
try:
|
||||||
|
web.print_sms(txt, sign, do_cut, many)
|
||||||
|
except RuntimeError as e:
|
||||||
|
app.logger.error("Whoops, we could not print an SMS because : %s ", str(e))
|
||||||
|
flash("Whoops, we could not print an SMS because :" + str(e), "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
# end try
|
||||||
|
flash("The SMS has been added to the print queue !", "info")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/web/print/img", methods=["POST"])
|
||||||
|
@limiter.limit("1/second", override_defaults=False)
|
||||||
|
def web_print_img():
|
||||||
|
"""Prints an image on a printer"""
|
||||||
|
app.logger.debug("Printing an image with web method")
|
||||||
|
|
||||||
|
try:
|
||||||
|
# comment: We try to get a signature
|
||||||
|
sign = request.form["signature"]
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
|
app.logger.warning(
|
||||||
|
"No signature found for this print, using default signature : %s", str(e)
|
||||||
|
)
|
||||||
|
sign = configuration_file["defaults"]["signature"]
|
||||||
|
except werkzeug.exceptions.RequestEntityTooLarge as e:
|
||||||
|
flash("Whoops, image is too big: " + str(e), "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
# check if the post request has the file part
|
||||||
|
if "img" not in request.files:
|
||||||
|
app.logger.error("Whoops, no images submitted : %s ", str(e))
|
||||||
|
app.logger.error("Error getting the files : %s", str(e))
|
||||||
|
flash("Whoops, no images submitted : " + str(e), "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
file = request.files["img"]
|
||||||
|
# If the user does not select a file, the browser submits an
|
||||||
|
# empty file without a filename.
|
||||||
|
if file.filename == "":
|
||||||
|
app.logger.error("Submitted file has no filename !")
|
||||||
|
flash("Submitted file has no filename !", "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
try:
|
||||||
|
do_cut = bool(request.form["cut"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
do_cut = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
process_image = bool(request.form["process"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
process_image = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Clamp value between 1 and
|
||||||
|
many = max(1, min(int(request.form["many"]), 20))
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
many = 1
|
||||||
|
|
||||||
|
try:
|
||||||
|
app.logger.debug("Sending the image to the printer.")
|
||||||
|
web.print_image(file, sign, do_cut, process_image, many)
|
||||||
|
except RuntimeError as e:
|
||||||
|
app.logger.error("The image could not be printed because : %s ", str(e))
|
||||||
|
flash("The image could not be printed because : " + str(e), "error")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
flash("Picture added to the print queue !", "info")
|
||||||
|
return redirect(url_for("index"))
|
||||||
|
|
||||||
|
|
||||||
# API routes
|
# API routes
|
||||||
# The api has the following methods
|
# The api has the following methods
|
||||||
# api/print/{sms,img,letter,qr,barcode}
|
# api/print/{sms,img,letter,qr,barcode}
|
||||||
@@ -163,93 +278,163 @@ def api_index():
|
|||||||
@limiter.limit("6/minute", override_defaults=False)
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
def api_print_sms():
|
def api_print_sms():
|
||||||
"""Prints a short message on a printer"""
|
"""Prints a short message on a printer"""
|
||||||
app.logger.debug("Printing an sms")
|
app.logger.debug("Printing an sms via API")
|
||||||
try:
|
try:
|
||||||
txt = request.form["txt"]
|
txt = request.form["txt"]
|
||||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
|
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
|
||||||
flash("Whoops, no forms submitted or missing signature : %s", str(e))
|
return str(e), 400
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
|
||||||
try:
|
try:
|
||||||
# comment: We try to get a signature
|
# comment: We try to get a signature
|
||||||
sign = request.form["signature"]
|
sign = request.form["signature"]
|
||||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
app.logger.warning(
|
app.logger.warning(
|
||||||
"No signature found for this print, using default signature.", str(e)
|
"No signature found for this print, using default signature. : %s", str(e)
|
||||||
)
|
)
|
||||||
sign = configuration_file["defaults"]["signature"]
|
sign = configuration_file["defaults"]["signature"]
|
||||||
|
|
||||||
web.print_sms(txt, sign)
|
try:
|
||||||
return redirect(url_for("index"))
|
do_cut = bool(request.form["cut"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
do_cut = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Clamp value between 1 and
|
||||||
|
many = max(1, min(int(request.form["many"]), 20))
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
many = 1
|
||||||
|
|
||||||
|
try:
|
||||||
|
# comment: We try to print the SMS
|
||||||
|
web.print_sms(txt, sign, do_cut, many)
|
||||||
|
except RuntimeError as e:
|
||||||
|
return str(e), 500
|
||||||
|
# end try
|
||||||
|
return "OK", 200
|
||||||
|
|
||||||
|
|
||||||
@app.route("/api/print/img", methods=["POST"])
|
@app.route("/api/print/img", methods=["POST"])
|
||||||
@limiter.limit("6/minute", override_defaults=False)
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
def api_print_image():
|
def api_print_image():
|
||||||
"""Prints an image on a printer"""
|
"""Prints an image on a printer"""
|
||||||
app.logger.debug("Printing an image")
|
app.logger.debug("Printing an image via API")
|
||||||
|
|
||||||
try:
|
try:
|
||||||
# comment: We try to get a signature
|
# comment: We try to get a signature
|
||||||
sign = request.form["signature"]
|
sign = request.form["signature"]
|
||||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||||
app.logger.warning(
|
app.logger.warning(
|
||||||
"No signature found for this print, using default signature.", str(e)
|
"No signature found for this print, using default signature. %s", str(e)
|
||||||
)
|
)
|
||||||
sign = configuration_file["defaults"]["signature"]
|
sign = configuration_file["defaults"]["signature"]
|
||||||
|
|
||||||
if request.method == "POST":
|
|
||||||
# check if the post request has the file part
|
# check if the post request has the file part
|
||||||
if "img" not in request.files:
|
if "img" not in request.files:
|
||||||
app.logger.error("Whoops, no images submitted : %s ", str(e))
|
app.logger.error("Whoops, no images submitted.")
|
||||||
app.logger.error("Error getting the files : %s", str(e))
|
return "No image submitted", 400
|
||||||
flash("Whoops, no images submitted : %s", str(e))
|
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
|
||||||
file = request.files["img"]
|
file = request.files["img"]
|
||||||
# If the user does not select a file, the browser submits an
|
# If the user submits an empty file without a filename.
|
||||||
# empty file without a filename.
|
|
||||||
if file.filename == "":
|
if file.filename == "":
|
||||||
app.logger.error("Submitted file has no filename !")
|
app.logger.error("Submitted file has no filename !")
|
||||||
flash("Submitted file has no filename !")
|
return "Submitted file has no filename !", 400
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
try:
|
||||||
|
do_cut = bool(request.form["cut"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
do_cut = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
process_image = bool(request.form["process"])
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
process_image = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Clamp value between 1 and
|
||||||
|
many = max(1, min(int(request.form["many"]), 20))
|
||||||
|
except werkzeug.exceptions.BadRequestKeyError:
|
||||||
|
many = 1
|
||||||
|
|
||||||
try:
|
try:
|
||||||
app.logger.debug("Sending the image to the printer.")
|
app.logger.debug("Sending the image to the printer.")
|
||||||
web.print_image(file, sign)
|
web.print_image(file, sign, do_cut, process_image, many)
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
app.logger.error("The image could not be printed because : %s ", str(e))
|
return str(e), 500
|
||||||
flash("The image could not be printed because : %s ", str(e))
|
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
|
||||||
else:
|
return "OK", 200
|
||||||
app.logger.error("Method not allowed")
|
|
||||||
flash("Method not allowed")
|
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
|
||||||
flash("Picture printed ! ")
|
|
||||||
return redirect(url_for("index"))
|
|
||||||
|
|
||||||
|
|
||||||
@app.route("/api/camera/picture")
|
# TODO: This might not depend on the Raspberry Pi
|
||||||
|
@app.route("/api/camera/picture", methods=["GET"])
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
def camera_picture():
|
def camera_picture():
|
||||||
"""Returns a picture taken by the camera"""
|
"""Returns a picture taken by the camera on a raspberry pi"""
|
||||||
if RASPBERRY_PI_CONNECTED:
|
if RASPBERRY_PI_CONNECTED:
|
||||||
try:
|
try:
|
||||||
return rpi.camera_picture()
|
return rpi.camera_picture()
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
return jsonify({"message": "Error getting the stream : " + e}), 500
|
return jsonify({"message": "Error getting the stream : " + e}), 500
|
||||||
else:
|
else:
|
||||||
return jsonify({"message": "No camera present"}), 500
|
return jsonify({"message": "No camera present"}), 500
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/queue", methods=["GET"])
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_queue_status():
|
||||||
|
"""API endpoint for entire queue"""
|
||||||
|
return jsonify(web.get_queue_state())
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/queue/completed", methods=["GET"])
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_queue_completed():
|
||||||
|
"""API endpoint that returns the finished tasks"""
|
||||||
|
return jsonify(web.get_queue_completed())
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/worker", methods=["GET"])
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_worker_state():
|
||||||
|
"""API endpoint to get the worker state"""
|
||||||
|
return jsonify(worker.current_state())
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/worker/start")
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_worker_start():
|
||||||
|
"""
|
||||||
|
Enable to worker. This starts to process the print queue.
|
||||||
|
"""
|
||||||
|
worker.start_worker()
|
||||||
|
return jsonify(worker.current_state())
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/worker/stop")
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_worker_stop():
|
||||||
|
"""
|
||||||
|
Stops the print queue. This stops the processing of the print queue.
|
||||||
|
"""
|
||||||
|
worker.stop_worker()
|
||||||
|
return jsonify(worker.current_state())
|
||||||
|
|
||||||
|
|
||||||
|
@app.route("/api/printers")
|
||||||
|
@limiter.limit("6/minute", override_defaults=False)
|
||||||
|
def api_printers_info():
|
||||||
|
"""Returns the current state of every printers"""
|
||||||
|
return jsonify(printers_pool.printers_info())
|
||||||
|
|
||||||
|
|
||||||
|
## Authentification
|
||||||
|
|
||||||
|
|
||||||
@app.route("/login")
|
@app.route("/login")
|
||||||
@limiter.limit("1/second", override_defaults=False)
|
@limiter.limit("1/second", override_defaults=False)
|
||||||
def login_page():
|
def login_page():
|
||||||
"""Unsued, logins"""
|
"""Unsued, logins"""
|
||||||
# web.login(username,password)
|
# web.login(username,password)
|
||||||
return redirect(url_for("index"))
|
return redirect(url_for("index")), 501
|
||||||
|
|
||||||
|
|
||||||
@app.route("/logout")
|
@app.route("/logout")
|
||||||
@@ -257,7 +442,7 @@ def login_page():
|
|||||||
def logout_page():
|
def logout_page():
|
||||||
"""Unused, logout"""
|
"""Unused, logout"""
|
||||||
# web.logout(username, password)
|
# web.logout(username, password)
|
||||||
return redirect(url_for("index"))
|
return redirect(url_for("index")), 501
|
||||||
|
|
||||||
|
|
||||||
@app.errorhandler(429)
|
@app.errorhandler(429)
|
||||||
@@ -295,3 +480,7 @@ def camera_status():
|
|||||||
socketio.emit("camera_status", True)
|
socketio.emit("camera_status", True)
|
||||||
else:
|
else:
|
||||||
socketio.emit("camera_status", False)
|
socketio.emit("camera_status", False)
|
||||||
|
|
||||||
|
|
||||||
|
if __name__ == "__main__":
|
||||||
|
app.run(use_reloader=False, host="0.0.0.0", ssl_context="adhoc")
|
||||||
|
|||||||
149
src/print_queue.py
Normal file
149
src/print_queue.py
Normal file
@@ -0,0 +1,149 @@
|
|||||||
|
"""
|
||||||
|
This class has the method by which we manage the Tasks
|
||||||
|
It's a printing queue, so we need to add, remove and get information on where
|
||||||
|
the queue is
|
||||||
|
"""
|
||||||
|
|
||||||
|
from collections import deque
|
||||||
|
|
||||||
|
# Because actually printing and adding new print job requests happen at
|
||||||
|
# diffrent times, the print queue is managed by it's own thread.
|
||||||
|
import threading
|
||||||
|
|
||||||
|
from datetime import datetime
|
||||||
|
from task import TaskType
|
||||||
|
|
||||||
|
|
||||||
|
class PrintQueue:
|
||||||
|
"""
|
||||||
|
A Double-ended Queue to manage the printing Tasks
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app):
|
||||||
|
self.app = app
|
||||||
|
self._queue = deque()
|
||||||
|
self._lock = threading.Lock()
|
||||||
|
self._completed_tasks = {} # Store completed task info
|
||||||
|
self._task_counter = 0
|
||||||
|
self.app.logger.debug("Created a new PrintQueue")
|
||||||
|
|
||||||
|
def __len__(self) -> int:
|
||||||
|
return len(self._queue)
|
||||||
|
|
||||||
|
def enqueue(self, task):
|
||||||
|
"""Add task to right of the queue and return position"""
|
||||||
|
with self._lock:
|
||||||
|
try:
|
||||||
|
self.app.logger.info("Add task %s to queue ", task.task_id)
|
||||||
|
self._queue.append(task)
|
||||||
|
position = self._queue.index(task)
|
||||||
|
# We return the current position of the task if it was added
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Added a new task %s to the queue at position %s",
|
||||||
|
task.task_id,
|
||||||
|
position,
|
||||||
|
)
|
||||||
|
return position
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error("Could not add a task to the queue : %s ", e)
|
||||||
|
raise e
|
||||||
|
|
||||||
|
def dequeue(self):
|
||||||
|
"""Remove and return next task ( from the left of the queue ) (thread-safe)"""
|
||||||
|
with self._lock:
|
||||||
|
return self._queue.popleft() if len(self._queue) > 0 else None
|
||||||
|
|
||||||
|
def get_position(self, task):
|
||||||
|
"""Get current position of task in queue (1-indexed)"""
|
||||||
|
with self._lock:
|
||||||
|
if task.task_id in self._completed_tasks:
|
||||||
|
return None # Task already completed
|
||||||
|
|
||||||
|
try:
|
||||||
|
# Try to get the position of a Task
|
||||||
|
return self._queue.index(task)
|
||||||
|
except ValueError as e:
|
||||||
|
raise e
|
||||||
|
# end try
|
||||||
|
|
||||||
|
def is_empty(self):
|
||||||
|
"""Check if queue is empty"""
|
||||||
|
with self._lock:
|
||||||
|
self.app.logger.debug("Checking if queue is empty")
|
||||||
|
return len(self._queue) == 0
|
||||||
|
|
||||||
|
def get_queue_state(self):
|
||||||
|
"""Return current queue state"""
|
||||||
|
with self._lock:
|
||||||
|
self.app.logger.debug("Return current queue state")
|
||||||
|
return [
|
||||||
|
{
|
||||||
|
"task_id": t.task_id,
|
||||||
|
"status": t.status,
|
||||||
|
"type": str(t.task_type),
|
||||||
|
"content": str(t.get_print_data()),
|
||||||
|
}
|
||||||
|
for t in self._queue
|
||||||
|
]
|
||||||
|
|
||||||
|
def get_queue_completed(self):
|
||||||
|
"""Return completed queue elements"""
|
||||||
|
with self._lock:
|
||||||
|
self.app.logger.debug("Return completed queue elements")
|
||||||
|
return self._completed_tasks
|
||||||
|
|
||||||
|
def get_status(self, task_id):
|
||||||
|
"""Get full status info for a task"""
|
||||||
|
with self._lock:
|
||||||
|
|
||||||
|
if task_id in self._completed_tasks:
|
||||||
|
return self._completed_tasks[task_id]
|
||||||
|
|
||||||
|
# Check in queue if it exists
|
||||||
|
for index, task in enumerate(self._queue):
|
||||||
|
if task.task_id == task_id:
|
||||||
|
# Depending on it's type, we return more info
|
||||||
|
if task.task_type == TaskType.IMAGE:
|
||||||
|
return {
|
||||||
|
"task_id": task_id,
|
||||||
|
"status": task.status,
|
||||||
|
"type": task.task_type,
|
||||||
|
"position": index,
|
||||||
|
"in_queue": True,
|
||||||
|
"content": task.content,
|
||||||
|
"signature": task.signature,
|
||||||
|
}
|
||||||
|
|
||||||
|
if task.task_type == TaskType.TEXT:
|
||||||
|
return {
|
||||||
|
"task_id": task_id,
|
||||||
|
"status": task.status,
|
||||||
|
"type": task.task_type,
|
||||||
|
"position": index,
|
||||||
|
"in_queue": True,
|
||||||
|
"image_path": str(task.image_path),
|
||||||
|
"signature": task.signature,
|
||||||
|
"process": str(task.process),
|
||||||
|
}
|
||||||
|
|
||||||
|
if task.task_type == TaskType.CUT:
|
||||||
|
return {
|
||||||
|
"task_id": task_id,
|
||||||
|
"status": task.status,
|
||||||
|
"type": task.task_type,
|
||||||
|
"position": index,
|
||||||
|
"in_queue": True,
|
||||||
|
}
|
||||||
|
|
||||||
|
return None
|
||||||
|
|
||||||
|
def mark_completed(self, task_id, task_status):
|
||||||
|
"""Mark task as completed and remove from queue"""
|
||||||
|
with self._lock:
|
||||||
|
self._completed_tasks[task_id] = {
|
||||||
|
"task_id": task_id,
|
||||||
|
"status": task_status,
|
||||||
|
"position": None,
|
||||||
|
"in_queue": False,
|
||||||
|
"completed_at": datetime.now().isoformat(),
|
||||||
|
}
|
||||||
791
src/printer.py
791
src/printer.py
@@ -1,97 +1,163 @@
|
|||||||
# Importing the module to manage the connection to the printer.
|
"""
|
||||||
import escpos.printer as escp
|
This class manages connexion to a Printer
|
||||||
from time import sleep, gmtime, strftime
|
"""
|
||||||
|
|
||||||
import os.path
|
import os.path
|
||||||
from PIL import Image, ImageEnhance, ImageOps
|
import os
|
||||||
|
from abc import ABC, abstractmethod
|
||||||
|
from dataclasses import dataclass
|
||||||
|
import time
|
||||||
|
from enum import Enum
|
||||||
|
import uuid
|
||||||
|
import threading
|
||||||
|
from pathlib import Path
|
||||||
|
from uuid import uuid4
|
||||||
|
import usb.core
|
||||||
|
from PIL import Image, ImageEnhance, ImageDraw, ImageFont
|
||||||
import numpy as np
|
import numpy as np
|
||||||
|
|
||||||
|
# Importing the modules needed for each supported printer Type
|
||||||
|
import escpos.printer
|
||||||
|
from brother_ql.models import ModelsManager
|
||||||
|
from brother_ql.backends import backend_factory, guess_backend
|
||||||
|
from brother_ql.raster import BrotherQLRaster
|
||||||
|
from brother_ql.conversion import convert
|
||||||
|
from brother_ql.backends.helpers import send
|
||||||
|
from brother_ql import create_label
|
||||||
|
|
||||||
class Printer(object):
|
|
||||||
|
class PrinterType(Enum):
|
||||||
"""
|
"""
|
||||||
# The connection is based on the ESC/POS library
|
What are the capacities of a Printer ?
|
||||||
|
|
||||||
## Connection to the USB printer
|
|
||||||
|
|
||||||
## Making sure the printer is alive
|
|
||||||
|
|
||||||
## Making sure it has paper
|
|
||||||
|
|
||||||
## Define default print settings
|
|
||||||
|
|
||||||
## Print starting message, log time of first print, cut.
|
|
||||||
|
|
||||||
## Annonce readyness : return a positive pong message.
|
|
||||||
"""
|
"""
|
||||||
|
|
||||||
# Is the printer ready to accept a new print ?
|
EPSON = "epson"
|
||||||
ready = False
|
BROTHER = "brother"
|
||||||
|
|
||||||
def __init__(self, app, device_id, vendor_id):
|
|
||||||
super(Printer, self).__init__()
|
# For Brother-QL Printers
|
||||||
|
@dataclass
|
||||||
|
class PrinterInfo:
|
||||||
|
"""
|
||||||
|
Brother-QL printer information
|
||||||
|
"""
|
||||||
|
|
||||||
|
identifier: str
|
||||||
|
backend: str
|
||||||
|
protocol: str
|
||||||
|
vendor_id: str
|
||||||
|
product_id: str
|
||||||
|
serial_number: str
|
||||||
|
name: str = "Brother QL Printer"
|
||||||
|
model: str = "QL-570"
|
||||||
|
status: str = "unknown"
|
||||||
|
label_type: str = "unknown"
|
||||||
|
label_size: str = "unknown"
|
||||||
|
label_width: int = 0
|
||||||
|
label_height: int = 0
|
||||||
|
|
||||||
|
def __getitem__(self, item):
|
||||||
|
return getattr(self, item)
|
||||||
|
|
||||||
|
def __setitem__(self, key, value):
|
||||||
|
setattr(self, key, value)
|
||||||
|
|
||||||
|
|
||||||
|
class Printer(ABC):
|
||||||
|
"""
|
||||||
|
If it outputs printed paper and speaks like a printer, then it must be a printer.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, vendor_id, device_id, printer_type: PrinterType):
|
||||||
|
"""
|
||||||
|
We initialize a Printer via it's USB connexion, and generate a unique ID
|
||||||
|
"""
|
||||||
|
self.id = uuid.uuid4()
|
||||||
self.app = app
|
self.app = app
|
||||||
self.ready = False
|
|
||||||
self.printer = None
|
|
||||||
self.device_id = device_id
|
|
||||||
self.vendor_id = vendor_id
|
self.vendor_id = vendor_id
|
||||||
|
self.device_id = device_id
|
||||||
|
self.ready = False
|
||||||
|
self.printer_type = printer_type
|
||||||
|
self._lock = threading.Lock()
|
||||||
|
self.used = False
|
||||||
|
|
||||||
|
@abstractmethod
|
||||||
|
def _has_paper(self) -> bool:
|
||||||
|
"""Check if the printer has papier"""
|
||||||
|
|
||||||
|
@abstractmethod
|
||||||
|
def _state(self) -> bool:
|
||||||
|
"""Reports the state of the Printer"""
|
||||||
|
|
||||||
|
@abstractmethod
|
||||||
|
def print_task(self, task_type, data) -> None:
|
||||||
|
"""Takes a PrintTask and executes it"""
|
||||||
|
|
||||||
|
def use_printer(self) -> None:
|
||||||
|
"""Marks the printer as being used"""
|
||||||
|
self.used = True
|
||||||
|
|
||||||
|
def free_printer(self) -> None:
|
||||||
|
"""Marks the printer as being not used, it's available."""
|
||||||
|
self.used = False
|
||||||
|
|
||||||
|
|
||||||
|
class EscPosPrinter(Printer):
|
||||||
|
"""
|
||||||
|
Create a new ESC/POS based printer.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, vendor_id, device_id, configuration_file):
|
||||||
|
"""
|
||||||
|
Create a connexion to a ESC/POS Printer via USB,
|
||||||
|
Making sure the printer is alive,
|
||||||
|
Making sure it has paper,
|
||||||
|
Define default print settings
|
||||||
|
"""
|
||||||
|
super().__init__(app, vendor_id, device_id, printer_type=PrinterType.EPSON)
|
||||||
|
self.printer = None
|
||||||
self.usb_args = {}
|
self.usb_args = {}
|
||||||
self.usb_args["idVendor"] = self.device_id
|
self.usb_args["idVendor"] = self.vendor_id
|
||||||
self.usb_args["idProduct"] = self.vendor_id
|
self.usb_args["idProduct"] = self.device_id
|
||||||
|
self.configuration_file = configuration_file
|
||||||
|
|
||||||
def check_paper(self) -> bool:
|
|
||||||
# Let's check paper status
|
|
||||||
self.app.logger.debug("Checking paper status...")
|
|
||||||
self.printer.open(self.usb_args)
|
|
||||||
status = self.printer.paper_status()
|
|
||||||
match status:
|
|
||||||
case 0:
|
|
||||||
self.app.logger.error("Printer has no more paper, aborting...")
|
|
||||||
self.printer.close()
|
|
||||||
raise Exception("No more paper in the printer")
|
|
||||||
case 1:
|
|
||||||
self.app.logger.warning(
|
|
||||||
"Printer needs paper to be changed very soon ! "
|
|
||||||
)
|
|
||||||
self.printer.close()
|
|
||||||
case 2:
|
|
||||||
self.app.logger.debug("Printer has paper, good to go")
|
|
||||||
self.printer.close()
|
|
||||||
|
|
||||||
def init_printer(self):
|
|
||||||
|
|
||||||
# Is the printer online ? Is the communication with the printer successfull ?
|
|
||||||
waiting_elapsed = 30
|
|
||||||
self.app.logger.debug("Waiting for printer to get online...")
|
|
||||||
|
|
||||||
while not self.ready:
|
|
||||||
try:
|
try:
|
||||||
# This also calls open(), which we need to close()
|
# This also calls open(), which we need to close()
|
||||||
# or else the device will appear as busy.
|
# or else the device will appear as busy.
|
||||||
p = escp.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
|
p = escpos.printer.Usb(
|
||||||
except Exception as e:
|
self.vendor_id, self.device_id, 0, profile=configuration_file["profile"]
|
||||||
self.app.logger.error(
|
|
||||||
"The USB device is not plugged in, trying again : " + str(e)
|
|
||||||
)
|
)
|
||||||
pass
|
except escpos.exceptions.DeviceNotFoundError as e:
|
||||||
|
self.app.logger.error(
|
||||||
|
"The USB device is not plugged in : %s",
|
||||||
|
str(e),
|
||||||
|
)
|
||||||
|
raise e
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error("Printer could not be connected : %s ", str(e))
|
||||||
|
raise e
|
||||||
|
|
||||||
try:
|
try:
|
||||||
if p.is_online():
|
if p.is_online():
|
||||||
self.ready = True
|
|
||||||
self.app.logger.debug("Printer online !")
|
self.app.logger.debug("Printer online !")
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
pass
|
raise e
|
||||||
|
|
||||||
sleep(1)
|
self.printer_info = PrinterInfo(
|
||||||
waiting_elapsed -= 1
|
identifier=configuration_file["profile"],
|
||||||
if waiting_elapsed < 1:
|
backend="pyusb",
|
||||||
self.app.logger.error(
|
model=configuration_file["profile"],
|
||||||
"Printer took more than 30 seconds to get online, aborting..."
|
protocol="ESC/POS",
|
||||||
|
vendor_id=self.vendor_id,
|
||||||
|
product_id=self.device_id,
|
||||||
|
serial_number="",
|
||||||
|
label_type=self.configuration_file["label_type"],
|
||||||
)
|
)
|
||||||
waiting_elapsed = 1 # Reset the waiting time for the next print.
|
|
||||||
return False
|
|
||||||
|
|
||||||
# Setting up the printing options.
|
# Setting up the printing options.
|
||||||
|
# TODO : Expose this to the web interface
|
||||||
p.set(
|
p.set(
|
||||||
align="center",
|
align=self.configuration_file["align_text"],
|
||||||
font="a",
|
font="a",
|
||||||
bold=False,
|
bold=False,
|
||||||
underline=0,
|
underline=0,
|
||||||
@@ -108,112 +174,167 @@ class Printer(object):
|
|||||||
# Beware : if we print every time the printer becomes ready, it means
|
# Beware : if we print every time the printer becomes ready, it means
|
||||||
# we are printing before and after every print !
|
# we are printing before and after every print !
|
||||||
self.printer = p
|
self.printer = p
|
||||||
|
self.printer.close() # We close the connexion to the Printer
|
||||||
|
|
||||||
|
try:
|
||||||
|
self._has_paper()
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
|
||||||
self.ready = True
|
self.ready = True
|
||||||
|
|
||||||
|
def _has_paper(self):
|
||||||
|
"""Check if the printer has paper left"""
|
||||||
|
self.app.logger.debug("Checking paper status...")
|
||||||
|
self.printer.open(self.usb_args)
|
||||||
|
status = self.printer.paper_status()
|
||||||
|
match status:
|
||||||
|
case 0:
|
||||||
|
self.app.logger.error("Printer has no more paper, aborting...")
|
||||||
|
self.printer.close()
|
||||||
|
raise RuntimeError("No more paper in the printer")
|
||||||
|
case 1:
|
||||||
|
self.app.logger.warning(
|
||||||
|
"Printer needs paper to be changed very soon ! "
|
||||||
|
)
|
||||||
|
self.printer.close()
|
||||||
|
return True
|
||||||
|
case 2:
|
||||||
|
self.app.logger.debug("Printer has paper, good to go")
|
||||||
self.printer.close()
|
self.printer.close()
|
||||||
|
|
||||||
self.check_paper()
|
|
||||||
|
|
||||||
return True
|
return True
|
||||||
|
|
||||||
def print_sms(self, msg, signature="", bold=False):
|
def _print_txt(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."
|
||||||
|
)
|
||||||
|
raise ValueError
|
||||||
|
|
||||||
|
# We make sure that the signature is not something too goofy
|
||||||
clean_msg = str(msg) + "\n"
|
clean_msg = str(msg) + "\n"
|
||||||
clean_signature = str(signature)
|
clean_signature = str(signature)
|
||||||
|
|
||||||
if len(clean_msg) > 4096:
|
# Make checks on the size of the message being printed
|
||||||
|
if len(clean_msg) > int(self.configuration_file["text_max_length"]):
|
||||||
self.app.logger.warning(
|
self.app.logger.warning(
|
||||||
"Could not print message of this length: " + str(len(clean_msg))
|
"Could not print message of this length: " + str(len(clean_msg))
|
||||||
)
|
)
|
||||||
raise Exception(
|
raise RuntimeError(
|
||||||
"Could not print message of this length :"
|
"Could not print message of this length :"
|
||||||
+ str(len(clean_msg))
|
+ str(len(clean_msg))
|
||||||
+ ", needs to be below 4096 caracters long."
|
+ ", needs to be below %s caracters long.",
|
||||||
|
str(self.configuration_file["text_max_length"]),
|
||||||
)
|
)
|
||||||
|
if len(signature) > int(self.configuration_file["signature_max_length"]):
|
||||||
if len(signature) > 256:
|
|
||||||
self.app.logger.warning(
|
self.app.logger.warning(
|
||||||
"Could not print signature of this length: " + str(len(clean_signature))
|
"Could not print signature of this length: " + str(len(clean_signature))
|
||||||
)
|
)
|
||||||
raise Exception(
|
raise RuntimeError(
|
||||||
"Could not print signature of this length :"
|
"Could not print signature of this length :"
|
||||||
+ str(len(clean_signature))
|
+ str(len(clean_signature))
|
||||||
+ ", needs to be below 256 caracters long."
|
+ ", needs to be below %s caracters long.",
|
||||||
|
str(self.configuration_file["signature_max_length"]),
|
||||||
)
|
)
|
||||||
|
|
||||||
|
# Do the actual printing
|
||||||
|
# We would pop the next element in the queue here, if it's a sms type
|
||||||
try:
|
try:
|
||||||
self.printer.open(self.usb_args)
|
self.printer.open(self.usb_args)
|
||||||
self.printer.set(align="center", font="a", bold=bold)
|
self.printer.set(align="center", font="a", bold=bold)
|
||||||
self.printer.textln(clean_msg)
|
self.printer.textln(clean_msg)
|
||||||
if clean_signature:
|
if clean_signature:
|
||||||
self.printer.textln(clean_signature)
|
self.printer.textln(clean_signature)
|
||||||
|
self.printer.textln()
|
||||||
self.printer.close()
|
self.printer.close()
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
self.app.logger.error("Unable to print because : " + str(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
|
||||||
|
|
||||||
self.app.logger.info("Printed text")
|
self.app.logger.info("Printed text")
|
||||||
return True
|
self.ready = True
|
||||||
|
|
||||||
def print_img(self, path, sign="", center=True, process=False):
|
def _print_img(self, path, signature="", center=True, process=False):
|
||||||
clean_signature = str(sign)
|
clean_signature = str(signature)
|
||||||
|
|
||||||
if len(sign) > 256:
|
if len(signature) > int(self.configuration_file["signature_max_length"]):
|
||||||
self.app.logger.warning(
|
self.app.logger.warning(
|
||||||
"Could not print signature of this length: " + str(len(clean_signature))
|
"Could not print signature of this length: " + str(len(clean_signature))
|
||||||
)
|
)
|
||||||
raise Exception(
|
raise RuntimeError(
|
||||||
"Could not print signature of this length :"
|
"Could not print signature of this length :"
|
||||||
+ str(len(clean_signature))
|
+ str(len(clean_signature))
|
||||||
+ ", needs to be below 256 caracters long."
|
+ ", needs to be below %s caracters long.",
|
||||||
|
str(self.configuration_file["signature_max_length"]),
|
||||||
)
|
)
|
||||||
|
|
||||||
if not os.path.isfile(str(path)):
|
if not os.path.isfile(str(path)):
|
||||||
self.app.logger.warning("File does not exist : " + str(path))
|
self.app.logger.warning("File does not exist : " + str(path))
|
||||||
raise Exception(
|
raise OSError(
|
||||||
"The file path for this image :"
|
"The file path for this image :"
|
||||||
+ str(path)
|
+ str(path)
|
||||||
+ " wasn't found. Please try again."
|
+ " wasn't found. Please try again."
|
||||||
)
|
)
|
||||||
else:
|
|
||||||
self.app.logger.debug("Printing file from " + str(path))
|
self.app.logger.debug("Printing file from " + str(path))
|
||||||
|
|
||||||
if process:
|
if process:
|
||||||
try:
|
try:
|
||||||
self.app.logger.debug("Proccessing the image")
|
self.app.logger.debug("Proccessing the image")
|
||||||
path = process_image(self, path)
|
processed_path = _process_image(self, path)
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
self.app.logger.error(str(e))
|
self.app.logger.error(
|
||||||
return False
|
"Error while processing the image, aborting print : %s", str(e)
|
||||||
|
)
|
||||||
|
raise e
|
||||||
else:
|
else:
|
||||||
|
processed_path = path
|
||||||
self.app.logger.warning("Not proccessing the image")
|
self.app.logger.warning("Not proccessing the image")
|
||||||
|
|
||||||
try:
|
try:
|
||||||
self.printer.open(self.usb_args)
|
self.printer.open(self.usb_args)
|
||||||
self.printer.image(path, center=center)
|
self.printer.image(processed_path, center=center)
|
||||||
|
self.printer.textln(signature)
|
||||||
self.printer.close()
|
self.printer.close()
|
||||||
self.app.logger.debug("Printed an image : " + str(path))
|
self.app.logger.debug("Printed an image : " + str(processed_path))
|
||||||
os.remove(path)
|
|
||||||
self.app.logger.debug("Removed image : " + str(path))
|
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
self.printer.close()
|
|
||||||
self.app.logger.error(str(e))
|
self.app.logger.error(str(e))
|
||||||
return False
|
raise RuntimeError("Could not print the picture") from e
|
||||||
|
# finally:
|
||||||
|
# try:
|
||||||
|
# os.remove(path)
|
||||||
|
# os.remove(processed_path)
|
||||||
|
# self.app.logger.debug("Removed image : " + str(processed_path))
|
||||||
|
# self.app.logger.debug("Removed image : " + str(path))
|
||||||
|
# except OSError as e:
|
||||||
|
# raise e
|
||||||
|
|
||||||
|
try:
|
||||||
|
self.printer.close()
|
||||||
|
except Exception as 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")
|
self.app.logger.info("Printed a picture")
|
||||||
return True
|
self.ready = True
|
||||||
|
|
||||||
def qr(self, content):
|
def _qr(self, content):
|
||||||
try:
|
try:
|
||||||
self.printer.open(self.usb_args)
|
self.printer.open(self.usb_args)
|
||||||
self.printer.qr(content, center=True)
|
self.printer.qr(content, center=True)
|
||||||
|
self.printer.textln(content)
|
||||||
self.printer.close()
|
self.printer.close()
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
self.printer.close()
|
self.printer.close()
|
||||||
self.app.logger.error(str(e))
|
self.app.logger.error(str(e))
|
||||||
return False
|
raise e
|
||||||
|
|
||||||
self.app.logger.info("Printed a QR")
|
self.app.logger.info("Printed a QR")
|
||||||
return True
|
self.ready = True
|
||||||
|
|
||||||
def cut(self):
|
def _cut(self):
|
||||||
try:
|
try:
|
||||||
self.printer.open(self.usb_args)
|
self.printer.open(self.usb_args)
|
||||||
self.printer.cut()
|
self.printer.cut()
|
||||||
@@ -224,65 +345,443 @@ class Printer(object):
|
|||||||
raise e
|
raise e
|
||||||
|
|
||||||
self.app.logger.info("Did a cut")
|
self.app.logger.info("Did a cut")
|
||||||
return True
|
self.ready = True
|
||||||
|
|
||||||
|
def _state(self) -> bool:
|
||||||
|
has_paper = self._has_paper()
|
||||||
|
is_ready = self.ready
|
||||||
|
|
||||||
def process_image(self, path):
|
self.app.logger.debug("Has paper : %s ", has_paper)
|
||||||
brightness_factor = 1.5 # Used only if image is too dark
|
self.app.logger.debug("Ready : %s ", is_ready)
|
||||||
brightness_threshold = 100 # Brightness threshold (0–255)
|
|
||||||
contrast_factor = 0.6 # Less than 1.0 = lower contrast
|
|
||||||
max_width = 575
|
|
||||||
max_height = 1000
|
|
||||||
|
|
||||||
with Image.open(path) as original_img:
|
return is_ready and has_paper # and is_online
|
||||||
# Convert to RGB if needed (JPEG doesn't support alpha)
|
|
||||||
if original_img.mode in ("RGBA", "P"):
|
|
||||||
self.app.logger.debug("Converting the image to RGB from RGBA")
|
|
||||||
original_img = original_img.convert("RGB")
|
|
||||||
|
|
||||||
# Resize while maintaining aspect ratio
|
def print_task(self, task_type, data):
|
||||||
original_img.thumbnail((max_width, max_height), Image.LANCZOS)
|
"""Execute actual print based on task type"""
|
||||||
self.app.logger.debug("Resized the image")
|
|
||||||
|
|
||||||
# # Convert to grayscale for dithering
|
with self._lock:
|
||||||
# dithered_img = original_img.convert("L").convert("1") # Dithering using default method (Floyd–Steinberg)
|
self.app.logger.debug("Acquired lock to start print")
|
||||||
# self.app.logger.debug("Dithered the image")
|
|
||||||
|
|
||||||
# Compute brightness of original image (grayscale average)
|
i_m_ready = self._state()
|
||||||
grayscale = original_img.convert("L")
|
while not i_m_ready:
|
||||||
avg_brightness = np.array(grayscale).mean()
|
|
||||||
self.app.logger.debug(
|
self.app.logger.debug(
|
||||||
"Average brightness of the image : " + str(avg_brightness)
|
"Waiting for the printer to become ready, current state %s ",
|
||||||
|
str(i_m_ready),
|
||||||
)
|
)
|
||||||
|
i_m_ready = self._state()
|
||||||
|
time.sleep(0.3)
|
||||||
|
|
||||||
# Dynamically compute brightness factor if too dark
|
self.app.logger.debug("Checked state to start printing : %s", self._state())
|
||||||
if avg_brightness < brightness_threshold:
|
self.ready = False
|
||||||
brightness_factor = (
|
try:
|
||||||
1 + (brightness_threshold - avg_brightness) / brightness_threshold
|
self.app.logger.debug("Checking task type")
|
||||||
|
match (task_type.value):
|
||||||
|
case "text":
|
||||||
|
|
||||||
|
self._print_txt(data["txt"], signature=data["sign"])
|
||||||
|
self.ready = True
|
||||||
|
case "image":
|
||||||
|
self._print_img(
|
||||||
|
data["img"], signature=data["sign"], process=data["process"]
|
||||||
)
|
)
|
||||||
brightness_factor = min(
|
self.ready = True
|
||||||
max(brightness_factor, 1.1), 2.5
|
case "cut":
|
||||||
) # Clamp between 1.1 and 2.5
|
self._cut()
|
||||||
self.app.logger.debug(
|
self.ready = True
|
||||||
f"Image too dark, increasing brightness by a factor of {brightness_factor:.2f}"
|
case "qr":
|
||||||
|
self._qr(data["txt"])
|
||||||
|
self.ready = True
|
||||||
|
case _:
|
||||||
|
raise RuntimeError("This task type is not supported")
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.debug("Exception occured while printing %s", str(e))
|
||||||
|
self.ready = True
|
||||||
|
raise RuntimeError from e
|
||||||
|
|
||||||
|
|
||||||
|
class BrotherPrinter(Printer):
|
||||||
|
"""
|
||||||
|
Manages connexion and capabilities of a BrotherQL Printer
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, vendor_id, device_id, configuration_file):
|
||||||
|
|
||||||
|
super().__init__(app, vendor_id, device_id, printer_type=PrinterType.BROTHER)
|
||||||
|
self.printer = None
|
||||||
|
self.usb_args = {}
|
||||||
|
self.usb_args["idVendor"] = self.vendor_id
|
||||||
|
self.usb_args["idProduct"] = self.device_id
|
||||||
|
self.model_manager = ModelsManager()
|
||||||
|
|
||||||
|
# Code taken from https://github.com/5shekel/printit/blob/master/printer_utils.py
|
||||||
|
|
||||||
|
self.app.logger.debug("Creating backend for Brother")
|
||||||
|
backend = backend_factory("pyusb")
|
||||||
|
|
||||||
|
available_devices = backend["list_available_devices"]()
|
||||||
|
|
||||||
|
for printer in available_devices:
|
||||||
|
self.app.logger.debug(f"Found device: {printer}")
|
||||||
|
identifier = printer["identifier"]
|
||||||
|
parts = identifier.split("/")
|
||||||
|
|
||||||
|
if len(parts) < 4:
|
||||||
|
self.app.logger.warning(
|
||||||
|
f"Skipping device with invalid identifier format: {identifier}"
|
||||||
)
|
)
|
||||||
enhancer = ImageEnhance.Brightness(original_img)
|
continue
|
||||||
original_img = enhancer.enhance(brightness_factor)
|
|
||||||
|
|
||||||
# # Reduce contrast
|
protocol = parts[0]
|
||||||
# contrast_enhancer = ImageEnhance.Contrast(original_img)
|
# device_info = parts[2]
|
||||||
# original_img = contrast_enhancer.enhance(contrast_factor)
|
serial_number = parts[3]
|
||||||
|
|
||||||
# Final resize check
|
try:
|
||||||
if original_img.height > max_height:
|
for m in self.model_manager.iter_elements():
|
||||||
raise ValueError("Image is too long, sorry! Keep it below 575×1000 pixels.")
|
if m.product_id == self.device_id:
|
||||||
|
model = m.identifier
|
||||||
|
|
||||||
|
break
|
||||||
|
|
||||||
|
self.app.logger.debug(f"Matched printer model: {model}")
|
||||||
|
except ValueError as ve:
|
||||||
|
self.app.logger.warning("Invalid product ID format:" + str(ve))
|
||||||
|
raise ve
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error("Error while finding a model ? : " + str(e))
|
||||||
|
raise e
|
||||||
|
|
||||||
|
self.printer_info = PrinterInfo(
|
||||||
|
identifier=identifier,
|
||||||
|
backend="pyusb",
|
||||||
|
model=model,
|
||||||
|
protocol=protocol,
|
||||||
|
vendor_id=vendor_id,
|
||||||
|
product_id=self.device_id,
|
||||||
|
serial_number=serial_number,
|
||||||
|
label_type=configuration_file[
|
||||||
|
"label_type"
|
||||||
|
], # TODO: Implement automatic label type detection : https://framagit.org/stickoeur/diagnostickoeur/-/blob/no-masters/printit.py?ref_type=heads#L239
|
||||||
|
)
|
||||||
|
self.app.logger.debug("Created a Brother printer !")
|
||||||
|
self.ready = True
|
||||||
|
|
||||||
|
def _has_paper(self):
|
||||||
|
raise NotImplementedError("This printer model does not support this.")
|
||||||
|
|
||||||
|
def _state(self):
|
||||||
|
return self.ready
|
||||||
|
|
||||||
|
def _print_txt(self, msg, signature="", bold=False):
|
||||||
|
"""Print text after converting it to an image"""
|
||||||
|
self._print_img(text_to_image(msg))
|
||||||
|
self._print_img(text_to_image(signature))
|
||||||
|
|
||||||
|
def _print_img(
|
||||||
|
self,
|
||||||
|
data,
|
||||||
|
signature="",
|
||||||
|
process=False,
|
||||||
|
):
|
||||||
|
"""
|
||||||
|
Print a raster image via a Brother QL printer
|
||||||
|
"""
|
||||||
|
self.app.logger.debug("Printing an image %s via Brother printer", data)
|
||||||
|
if process:
|
||||||
|
try:
|
||||||
|
self.app.logger.debug("Proccessing the image")
|
||||||
|
processed_path = _process_image(self, data)
|
||||||
|
except RuntimeError as e:
|
||||||
self.app.logger.error(
|
self.app.logger.error(
|
||||||
"Image is too long, sorry! Keep it below 575×1000 pixels."
|
"Error while processing the image, aborting print : %s", str(e)
|
||||||
)
|
)
|
||||||
return False
|
raise e
|
||||||
|
else:
|
||||||
|
processed_path = data
|
||||||
|
self.app.logger.warning("Not proccessing the image")
|
||||||
|
|
||||||
|
try:
|
||||||
|
selected_backend = guess_backend(self.printer_info.identifier)
|
||||||
|
BACKEND_CLASS = backend_factory(selected_backend)["backend_class"]
|
||||||
|
BACKEND_STRING_DESCR = self.printer_info.identifier
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error(
|
||||||
|
"Couldn't guess the backend to use from the printer string descriptor"
|
||||||
|
)
|
||||||
|
raise e
|
||||||
|
|
||||||
|
try:
|
||||||
|
im = Image.open(processed_path)
|
||||||
|
qlr = BrotherQLRaster(self.printer_info.model)
|
||||||
|
# create_label(qlr, im, self.printer_info.label_type, cut=False, dither=True)
|
||||||
|
|
||||||
|
# noinspection PyCallingNonCallable
|
||||||
|
# be = BACKEND_CLASS(BACKEND_STRING_DESCR)
|
||||||
|
# be.write(qlr.data)
|
||||||
|
# be.dispose()
|
||||||
|
# del be
|
||||||
|
|
||||||
|
instructions = convert(
|
||||||
|
qlr=qlr,
|
||||||
|
images=[im],
|
||||||
|
label=self.printer_info.label_type,
|
||||||
|
dither=True,
|
||||||
|
compress=False,
|
||||||
|
dpi_600=False,
|
||||||
|
cut=False,
|
||||||
|
)
|
||||||
|
|
||||||
|
success = send(
|
||||||
|
instructions=instructions,
|
||||||
|
printer_identifier=BACKEND_STRING_DESCR,
|
||||||
|
backend_identifier="pyusb",
|
||||||
|
blocking=False,
|
||||||
|
)
|
||||||
|
|
||||||
|
self.app.logger.debug(str(success))
|
||||||
|
self.app.logger.debug("Printed image")
|
||||||
|
time.sleep(2)
|
||||||
|
|
||||||
|
except usb.core.USBError as e:
|
||||||
|
if "timeout error" in str(e):
|
||||||
|
self.app.logger.error("USB Timeout Error %s", str(e))
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
# finally:
|
||||||
|
# try:
|
||||||
|
# os.remove(processed_path)
|
||||||
|
# self.app.logger.debug("Removed image : " + str(processed_path))
|
||||||
|
# except OSError as e:
|
||||||
|
# raise e
|
||||||
|
|
||||||
|
if signature != "":
|
||||||
|
self.app.logger.debug("Printing signature for the image %s", data)
|
||||||
|
try:
|
||||||
|
signature_file = text_to_image(signature)
|
||||||
|
im = Image.open(signature_file)
|
||||||
|
qlr = BrotherQLRaster(self.printer_info.model)
|
||||||
|
# create_label(
|
||||||
|
# qlr, im, self.printer_info.label_type, cut=False, dither=True
|
||||||
|
# )
|
||||||
|
|
||||||
|
# noinspection PyCallingNonCallable
|
||||||
|
# be = BACKEND_CLASS(BACKEND_STRING_DESCR)
|
||||||
|
# be.write(qlr.data)
|
||||||
|
# be.dispose()
|
||||||
|
# del be
|
||||||
|
instructions = convert(
|
||||||
|
qlr=qlr,
|
||||||
|
images=[signature_file],
|
||||||
|
label=self.printer_info.label_type,
|
||||||
|
dither=True,
|
||||||
|
compress=False,
|
||||||
|
dpi_600=False,
|
||||||
|
cut=False,
|
||||||
|
)
|
||||||
|
|
||||||
|
success = send(
|
||||||
|
instructions=instructions,
|
||||||
|
printer_identifier=BACKEND_STRING_DESCR,
|
||||||
|
backend_identifier="pyusb",
|
||||||
|
blocking=False,
|
||||||
|
)
|
||||||
|
self.app.logger.debug(str(success))
|
||||||
|
self.app.logger.debug("Printed signature")
|
||||||
|
time.sleep(2)
|
||||||
|
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
finally:
|
||||||
|
try:
|
||||||
|
# os.remove(signature_file)
|
||||||
|
self.app.logger.debug("Removed image : " + str(signature_file))
|
||||||
|
except OSError as e:
|
||||||
|
raise e
|
||||||
|
|
||||||
|
def _cut(self):
|
||||||
|
self.app.logger.debug("Cutting via Brother Printer")
|
||||||
|
try:
|
||||||
|
selected_backend = guess_backend(self.printer_info.identifier)
|
||||||
|
BACKEND_CLASS = backend_factory(selected_backend)["backend_class"]
|
||||||
|
BACKEND_STRING_DESCR = self.printer_info.identifier
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error(
|
||||||
|
"Couldn't guess the backend to use from the printer string descriptor"
|
||||||
|
)
|
||||||
|
raise e
|
||||||
|
|
||||||
|
data = "src/static/images/1x1.png"
|
||||||
|
try:
|
||||||
|
im = Image.open(data)
|
||||||
|
qlr = BrotherQLRaster(self.printer_info.model)
|
||||||
|
create_label(
|
||||||
|
qlr, im, self.printer_info.label_type, threshold=70, cut=True, rotate=0
|
||||||
|
)
|
||||||
|
|
||||||
|
# noinspection PyCallingNonCallable
|
||||||
|
be = BACKEND_CLASS(BACKEND_STRING_DESCR)
|
||||||
|
be.write(qlr.data)
|
||||||
|
be.dispose()
|
||||||
|
del be
|
||||||
|
self.app.logger.debug("Finished cutting via Brother Printer")
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
|
||||||
|
def _qr(self):
|
||||||
|
# This should not be reached by a print on a BrotherQL
|
||||||
|
raise NotImplementedError()
|
||||||
|
|
||||||
|
def print_task(self, task_type, data):
|
||||||
|
"""Execute actual print based on task type"""
|
||||||
|
with self._lock:
|
||||||
|
self.app.logger.debug("Acquired lock to start print")
|
||||||
|
i_m_ready = self._state()
|
||||||
|
while not i_m_ready:
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Waiting for the printer to become ready, current state %s ",
|
||||||
|
str(i_m_ready),
|
||||||
|
)
|
||||||
|
i_m_ready = self._state()
|
||||||
|
time.sleep(0.3)
|
||||||
|
|
||||||
|
self.app.logger.debug("Checked state to start printing : %s", self._state())
|
||||||
|
self.ready = False
|
||||||
|
|
||||||
|
try:
|
||||||
|
match (task_type.value):
|
||||||
|
case "image":
|
||||||
|
self._print_img(data["img"], signature=data["sign"])
|
||||||
|
self.ready = True
|
||||||
|
case "cut":
|
||||||
|
self._cut()
|
||||||
|
self.ready = True
|
||||||
|
case "text":
|
||||||
|
self._print_txt(data["txt"], signature=data["sign"])
|
||||||
|
self.ready = True
|
||||||
|
case _:
|
||||||
|
raise RuntimeError("This task type is not supported")
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
|
||||||
|
|
||||||
|
def _process_image(self, path, max_width=575, max_height=1000):
|
||||||
|
brightness_threshold = 100
|
||||||
|
contrast_factor = 2.0
|
||||||
|
|
||||||
|
with Image.open(path) as img:
|
||||||
|
# Preserve aspect ratio while fitting within the maximum dimensions.
|
||||||
|
img.thumbnail(
|
||||||
|
(max_width, max_height),
|
||||||
|
Image.Resampling.LANCZOS,
|
||||||
|
)
|
||||||
|
|
||||||
|
grayscale = img.convert("L")
|
||||||
|
|
||||||
|
avg_brightness = np.asarray(grayscale, dtype=np.float32).mean()
|
||||||
|
self.app.logger.debug("Average brightness of the image: %.2f", avg_brightness)
|
||||||
|
|
||||||
|
if avg_brightness < brightness_threshold:
|
||||||
|
brightness_factor = min(
|
||||||
|
max(
|
||||||
|
1 + (brightness_threshold - avg_brightness) / brightness_threshold,
|
||||||
|
1.1,
|
||||||
|
),
|
||||||
|
2.5,
|
||||||
|
)
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Image is dark; increasing brightness by %.2f",
|
||||||
|
brightness_factor,
|
||||||
|
)
|
||||||
|
grayscale = ImageEnhance.Brightness(grayscale).enhance(brightness_factor)
|
||||||
|
|
||||||
|
contrast = float(np.asarray(grayscale, dtype=np.float32).std())
|
||||||
|
self.app.logger.debug("Grayscale standard deviation: %.2f", contrast)
|
||||||
|
|
||||||
|
# Save the enhanced result.
|
||||||
|
processed = ImageEnhance.Contrast(grayscale).enhance(contrast_factor)
|
||||||
|
|
||||||
# Convert to JPEG and save
|
|
||||||
jpeg_path = os.path.splitext(path)[0] + "_processed.jpg"
|
jpeg_path = os.path.splitext(path)[0] + "_processed.jpg"
|
||||||
original_img.save(jpeg_path, format="JPEG", quality=95, optimize=True)
|
processed.save(jpeg_path, format="JPEG", quality=95, optimize=True)
|
||||||
|
|
||||||
|
self.app.logger.debug("Processed and saved image: %s", jpeg_path)
|
||||||
return jpeg_path
|
return jpeg_path
|
||||||
|
|
||||||
|
|
||||||
|
def text_to_image(
|
||||||
|
text,
|
||||||
|
width=400,
|
||||||
|
font_path="src/static/font/MonospaceTypewriter.ttf",
|
||||||
|
font_size=24,
|
||||||
|
padding=10,
|
||||||
|
line_spacing=4,
|
||||||
|
background="white",
|
||||||
|
fill="black",
|
||||||
|
output_dir="src/static/uploads",
|
||||||
|
):
|
||||||
|
"""Converts a string to an image"""
|
||||||
|
|
||||||
|
font = ImageFont.truetype(font_path, font_size)
|
||||||
|
|
||||||
|
# Measure and wrap text by pixel width.
|
||||||
|
measure_img = Image.new("RGB", (1, 1))
|
||||||
|
draw = ImageDraw.Draw(measure_img)
|
||||||
|
max_text_width = width - 2 * padding
|
||||||
|
if max_text_width <= 0:
|
||||||
|
raise ValueError("width must be greater than twice the padding")
|
||||||
|
|
||||||
|
lines = []
|
||||||
|
for paragraph in text.splitlines() or [""]:
|
||||||
|
words = paragraph.split()
|
||||||
|
if not words:
|
||||||
|
lines.append("")
|
||||||
|
continue
|
||||||
|
|
||||||
|
line = ""
|
||||||
|
for word in words:
|
||||||
|
candidate = f"{line} {word}".strip()
|
||||||
|
if draw.textbbox((0, 0), candidate, font=font)[2] <= max_text_width:
|
||||||
|
line = candidate
|
||||||
|
continue
|
||||||
|
|
||||||
|
if line:
|
||||||
|
lines.append(line)
|
||||||
|
|
||||||
|
# Split a word that is wider than the available width.
|
||||||
|
line = ""
|
||||||
|
piece = ""
|
||||||
|
for char in word:
|
||||||
|
if (
|
||||||
|
piece
|
||||||
|
and draw.textbbox((0, 0), piece + char, font=font)[2]
|
||||||
|
> max_text_width
|
||||||
|
):
|
||||||
|
lines.append(piece)
|
||||||
|
piece = char
|
||||||
|
else:
|
||||||
|
piece += char
|
||||||
|
line = piece
|
||||||
|
|
||||||
|
if line:
|
||||||
|
lines.append(line)
|
||||||
|
|
||||||
|
if not lines:
|
||||||
|
lines = [""]
|
||||||
|
|
||||||
|
ascent, descent = font.getmetrics()
|
||||||
|
line_height = ascent + descent
|
||||||
|
height = 2 * padding + len(lines) * line_height + (len(lines) - 1) * line_spacing
|
||||||
|
|
||||||
|
image = Image.new("RGB", (width, height), background)
|
||||||
|
draw = ImageDraw.Draw(image)
|
||||||
|
|
||||||
|
y = padding
|
||||||
|
for line in lines:
|
||||||
|
draw.text((padding, y), line, font=font, fill=fill)
|
||||||
|
y += line_height + line_spacing
|
||||||
|
|
||||||
|
upload_dir = Path(output_dir)
|
||||||
|
upload_dir.mkdir(parents=True, exist_ok=True)
|
||||||
|
|
||||||
|
image_path = upload_dir / f"{uuid4().hex}.png"
|
||||||
|
image.save(image_path, format="PNG")
|
||||||
|
|
||||||
|
return str(image_path)
|
||||||
|
|||||||
215
src/printers.py
Normal file
215
src/printers.py
Normal file
@@ -0,0 +1,215 @@
|
|||||||
|
"""
|
||||||
|
A collection of Printers.
|
||||||
|
|
||||||
|
It has methods to discover printers, and provides an interface for
|
||||||
|
the methods expected from printers.
|
||||||
|
"""
|
||||||
|
|
||||||
|
from collections.abc import Set
|
||||||
|
import time
|
||||||
|
import threading
|
||||||
|
import usb.core
|
||||||
|
import usb.util
|
||||||
|
from printer import Printer, EscPosPrinter, BrotherPrinter
|
||||||
|
|
||||||
|
|
||||||
|
class Printers:
|
||||||
|
"""
|
||||||
|
Finds and creates a set of Printer that can be used by the Workers to print.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, configuration_file):
|
||||||
|
"""
|
||||||
|
Discovers printers connected to the computer
|
||||||
|
"""
|
||||||
|
self.app = app
|
||||||
|
self.configuration_file = configuration_file
|
||||||
|
self.printers = list(self._discover_printers())
|
||||||
|
self._lock = threading.Lock()
|
||||||
|
|
||||||
|
def _discover_printers(self) -> Set[Printer]:
|
||||||
|
"""
|
||||||
|
Gets connected USB printer devices using the pyusb library.
|
||||||
|
|
||||||
|
We analyse the USB devices, get the ones that match
|
||||||
|
the printer class ( 7 ) and for Brother and EPSON printers,
|
||||||
|
try to create a Printer object that can be used by the Worker class
|
||||||
|
to execute prints.
|
||||||
|
|
||||||
|
Returns a set of Printer
|
||||||
|
"""
|
||||||
|
|
||||||
|
self.app.logger.debug("Discovering USB Devices connected to this system")
|
||||||
|
|
||||||
|
printers = set()
|
||||||
|
|
||||||
|
waiting_time_for_printer = self.configuration_file["printer"]["waiting_time"]
|
||||||
|
|
||||||
|
while True:
|
||||||
|
# Find all connected USB devices
|
||||||
|
# the find() fnc returns a generator
|
||||||
|
devices = list(
|
||||||
|
usb.core.find(find_all=True, custom_match=_FindClass(self.app, 7))
|
||||||
|
)
|
||||||
|
|
||||||
|
if devices:
|
||||||
|
break
|
||||||
|
|
||||||
|
if waiting_time_for_printer <= 0:
|
||||||
|
self.app.logger.warning(
|
||||||
|
"No USB devices of class 7 ( printers ) found or pyusb could not access the bus."
|
||||||
|
)
|
||||||
|
raise RuntimeError(
|
||||||
|
"No USB devices of class 7 ( printers ) found or pyusb could not access the bus."
|
||||||
|
)
|
||||||
|
|
||||||
|
self.app.logger.warning(
|
||||||
|
"No printers found; waiting for a printer to connect..."
|
||||||
|
)
|
||||||
|
|
||||||
|
time.sleep(1)
|
||||||
|
waiting_time_for_printer -= 1
|
||||||
|
|
||||||
|
for dev in devices:
|
||||||
|
# Attempt to get the manufacturer and product strings
|
||||||
|
try:
|
||||||
|
manufacturer = usb.util.get_string(dev, dev.iManufacturer)
|
||||||
|
except Exception:
|
||||||
|
manufacturer = "Unknown"
|
||||||
|
|
||||||
|
try:
|
||||||
|
product = usb.util.get_string(dev, dev.iProduct)
|
||||||
|
except Exception:
|
||||||
|
product = "Unknown"
|
||||||
|
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Looking at %s %s (%s:%s)",
|
||||||
|
manufacturer,
|
||||||
|
product,
|
||||||
|
hex(dev.idVendor),
|
||||||
|
hex(dev.idProduct),
|
||||||
|
)
|
||||||
|
|
||||||
|
match (manufacturer):
|
||||||
|
case "EPSON":
|
||||||
|
try:
|
||||||
|
# We create a new EscPosPrinter()
|
||||||
|
self.app.logger.debug("Trying to create a new EPSON printer")
|
||||||
|
prid = dev.idProduct
|
||||||
|
vendir = dev.idVendor
|
||||||
|
escpos_printer = EscPosPrinter(
|
||||||
|
self.app,
|
||||||
|
vendir,
|
||||||
|
prid,
|
||||||
|
self.configuration_file["printer"]["epson"],
|
||||||
|
)
|
||||||
|
except Exception as e:
|
||||||
|
raise e
|
||||||
|
|
||||||
|
# If the object creation is successfull, we add it to the list of Printers
|
||||||
|
printers.add(escpos_printer)
|
||||||
|
self.app.logger.debug("Found a %s printer", manufacturer)
|
||||||
|
case "Brother":
|
||||||
|
try:
|
||||||
|
# We create a new BrotherPrinter()
|
||||||
|
self.app.logger.debug("Trying to create a new BROTHER printer")
|
||||||
|
|
||||||
|
brother_printer = BrotherPrinter(
|
||||||
|
self.app,
|
||||||
|
dev.idVendor,
|
||||||
|
dev.idProduct,
|
||||||
|
self.configuration_file["printer"]["brother"],
|
||||||
|
)
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error(
|
||||||
|
"Could not create a %s printer class with %s:%s",
|
||||||
|
product,
|
||||||
|
dev.idVendor,
|
||||||
|
dev.idProduct,
|
||||||
|
)
|
||||||
|
raise e
|
||||||
|
|
||||||
|
# If the object creation is successfull, we add it to the list of Printers
|
||||||
|
printers.add(brother_printer)
|
||||||
|
self.app.logger.debug("Found a %s printer", manufacturer)
|
||||||
|
case _:
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Found a printer of unknown manufacturer : %s", manufacturer
|
||||||
|
)
|
||||||
|
# end match
|
||||||
|
|
||||||
|
self.app.logger.debug("Found %s printers", len(printers))
|
||||||
|
|
||||||
|
if len(printers) < 1:
|
||||||
|
self.app.logger.warning(
|
||||||
|
"Not printers found ! Please plug in a Printer and restart the program."
|
||||||
|
)
|
||||||
|
raise RuntimeError("No printers found")
|
||||||
|
|
||||||
|
return printers
|
||||||
|
|
||||||
|
def acquire_available_printer(self, start_index=0):
|
||||||
|
"""Atomically acquire and return an available printer, or None."""
|
||||||
|
printers = self.printers
|
||||||
|
if not printers:
|
||||||
|
self.app.logger.error("No printers available for acquisition")
|
||||||
|
return None
|
||||||
|
|
||||||
|
with self._lock:
|
||||||
|
# So don't always look at the first printer available if need be
|
||||||
|
# this allows for a round-robin lookup
|
||||||
|
for offset in range(len(printers)):
|
||||||
|
index = (start_index + offset) % len(printers)
|
||||||
|
printer = printers[index]
|
||||||
|
|
||||||
|
if not printer.used:
|
||||||
|
printer.use_printer()
|
||||||
|
return index, printer
|
||||||
|
|
||||||
|
return None
|
||||||
|
|
||||||
|
def printers_info(self):
|
||||||
|
"""Return the current list of printers"""
|
||||||
|
printers_info_list = []
|
||||||
|
for i in self.printers:
|
||||||
|
printers_info_list.append(
|
||||||
|
[
|
||||||
|
i.printer_type.name,
|
||||||
|
"Used: " + str(i.used),
|
||||||
|
"Ready: " + str(i.ready),
|
||||||
|
i.printer_info,
|
||||||
|
]
|
||||||
|
)
|
||||||
|
|
||||||
|
return printers_info_list
|
||||||
|
|
||||||
|
|
||||||
|
class _FindClass:
|
||||||
|
"""
|
||||||
|
Use by usb.core to modify the way USB devices are found
|
||||||
|
Taken from pyUSB documentation on Github
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, class_):
|
||||||
|
self._class = class_
|
||||||
|
self.app = app
|
||||||
|
|
||||||
|
def __call__(self, device):
|
||||||
|
# first, let's check the device
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Found a USB device of class %s", str(device.bDeviceClass)
|
||||||
|
)
|
||||||
|
if device.bDeviceClass == self._class:
|
||||||
|
return True
|
||||||
|
# ok, transverse all devices to find an
|
||||||
|
# interface that matches our class
|
||||||
|
for configuration in device:
|
||||||
|
# Every device can have one or more configuration,
|
||||||
|
interface = usb.util.find_descriptor(
|
||||||
|
configuration, bInterfaceClass=self._class
|
||||||
|
)
|
||||||
|
# each config can have several interfaces
|
||||||
|
if interface is not None:
|
||||||
|
return True
|
||||||
|
|
||||||
|
return False
|
||||||
129
src/raspberry.py
129
src/raspberry.py
@@ -1,13 +1,21 @@
|
|||||||
from flask_socketio import SocketIO
|
"""
|
||||||
from gpiozero import Button, LED, DigitalOutputDevice
|
This class executes when we are on a raspberry Pi.
|
||||||
from time import sleep, gmtime, strftime
|
|
||||||
from PIL import Image
|
It handles the press of a button via GPIO,
|
||||||
|
activates a flash and prints out the picture
|
||||||
|
that was taken via a USB Webcam.
|
||||||
|
"""
|
||||||
|
|
||||||
import io # To check if we are on a Raspberry Pi
|
import io # To check if we are on a Raspberry Pi
|
||||||
import subprocess
|
import subprocess
|
||||||
import os
|
import os
|
||||||
|
from time import sleep, gmtime, strftime
|
||||||
|
from gpiozero import Button, LED, DigitalOutputDevice
|
||||||
|
from PIL import Image
|
||||||
|
from task import TextTask, ImageTask, CutTask
|
||||||
|
|
||||||
|
|
||||||
class Raspberry(object):
|
class Raspberry:
|
||||||
"""
|
"""
|
||||||
This class will manage three things :
|
This class will manage three things :
|
||||||
- Connecting to a USB webcam
|
- Connecting to a USB webcam
|
||||||
@@ -15,32 +23,24 @@ class Raspberry(object):
|
|||||||
- Activating a flash ( or light )
|
- Activating a flash ( or light )
|
||||||
- Flash an indicator light
|
- Flash an indicator light
|
||||||
|
|
||||||
|
# pylint: disable=too-many-instance-attributes
|
||||||
|
# dede
|
||||||
"""
|
"""
|
||||||
|
|
||||||
def __init__(
|
def __init__(self, print_queue, app, configuration_file):
|
||||||
self,
|
self.print_queue = print_queue
|
||||||
printer,
|
|
||||||
app,
|
|
||||||
socketio,
|
|
||||||
button_gpio_port_number,
|
|
||||||
indicator_gpio_port_number,
|
|
||||||
flash_gpio_port_number,
|
|
||||||
is_flash_present,
|
|
||||||
):
|
|
||||||
self.printer = printer
|
|
||||||
self.socketio = socketio
|
|
||||||
self.app = app
|
self.app = app
|
||||||
|
self.configuration_file = configuration_file
|
||||||
self.flash_gpio = flash_gpio_port_number
|
|
||||||
self.is_flash_present = is_flash_present
|
|
||||||
self.button_gpio = button_gpio_port_number
|
|
||||||
self.led_gpio = indicator_gpio_port_number
|
|
||||||
self.image_path = self.app.config["UPLOAD_FOLDER"] + "/image.jpg"
|
self.image_path = self.app.config["UPLOAD_FOLDER"] + "/image.jpg"
|
||||||
|
|
||||||
def is_raspberry_pi(self, raise_on_errors=False):
|
def is_raspberry_pi(self):
|
||||||
|
"""
|
||||||
|
Checking if we are on a Raspberry Pi by checking
|
||||||
|
information on the /proc/cpuinfo file
|
||||||
|
"""
|
||||||
# Check if we are running on a raspberry pi
|
# Check if we are running on a raspberry pi
|
||||||
try:
|
try:
|
||||||
with io.open("/proc/cpuinfo", "r") as cpuinfo:
|
with io.open("/proc/cpuinfo", "r", encoding="utf-8") as cpuinfo:
|
||||||
found = False
|
found = False
|
||||||
for line in cpuinfo:
|
for line in cpuinfo:
|
||||||
if line.startswith("Hardware"):
|
if line.startswith("Hardware"):
|
||||||
@@ -60,8 +60,11 @@ class Raspberry(object):
|
|||||||
return False
|
return False
|
||||||
|
|
||||||
if not found:
|
if not found:
|
||||||
self.app.logger.error(
|
self.app.logger.warning(
|
||||||
"Couldn't get sufficient hardware information from /proc/cpuinfo, Unable to determine if we are on a Raspberry Pi."
|
"Couldn't get sufficient hardware information from /proc/cpuinfo"
|
||||||
|
)
|
||||||
|
self.app.logger.warning(
|
||||||
|
"Unable to determine if we are on a Raspberry Pi."
|
||||||
)
|
)
|
||||||
return False
|
return False
|
||||||
except IOError:
|
except IOError:
|
||||||
@@ -71,28 +74,41 @@ class Raspberry(object):
|
|||||||
self.app.logger.debug("It seems we are on a Raspberry Pi")
|
self.app.logger.debug("It seems we are on a Raspberry Pi")
|
||||||
|
|
||||||
try:
|
try:
|
||||||
self.initialise_gpio()
|
self._initialise_gpio()
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
self.app.logger.debug("Could not init GPIO : " + str(e))
|
self.app.logger.debug("Could not init GPIO : " + str(e))
|
||||||
raise e
|
raise e
|
||||||
return True
|
return True
|
||||||
|
|
||||||
def initialise_gpio(self):
|
def _initialise_gpio(self):
|
||||||
|
"""
|
||||||
|
Set GPIO ports from configuration and activate them
|
||||||
|
to show the user it's working.
|
||||||
|
"""
|
||||||
self.app.logger.debug("Initializing GPIO")
|
self.app.logger.debug("Initializing GPIO")
|
||||||
|
|
||||||
self.led = LED(self.led_gpio)
|
self.led = LED(self.configuration_file["rpi"]["indicator_gpio_port_number"])
|
||||||
self.app.logger.debug("Activated indicator LED")
|
self.app.logger.debug("Activated indicator LED")
|
||||||
self.indicator_countdown(iters=3)
|
self.indicator_countdown(iters=3)
|
||||||
self.button = Button(self.button_gpio, pull_up=True, bounce_time=0.1)
|
self.button = Button(
|
||||||
|
self.configuration_file["rpi"]["button_gpio_port_number"],
|
||||||
|
pull_up=True,
|
||||||
|
bounce_time=0.1,
|
||||||
|
)
|
||||||
self.button.when_pressed = self.on_button_pressed
|
self.button.when_pressed = self.on_button_pressed
|
||||||
self.app.logger.debug("Activated button")
|
self.app.logger.debug("Activated button")
|
||||||
|
|
||||||
# The "flash" is a relay-controlled device ( light bulb for example )
|
# The "flash" is a relay-controlled device ( light bulb for example )
|
||||||
self.flash = DigitalOutputDevice(self.flash_gpio)
|
self.flash = DigitalOutputDevice(
|
||||||
|
self.configuration_file["rpi"]["flash_gpio_port_number"]
|
||||||
|
)
|
||||||
self.flash_toggle()
|
self.flash_toggle()
|
||||||
self.app.logger.debug("Activated flash")
|
self.app.logger.debug("Activated flash")
|
||||||
|
|
||||||
def indicator_countdown(self, iters=10, multi=10):
|
def indicator_countdown(self, iters=10, multi=10):
|
||||||
|
"""
|
||||||
|
Activates the LED faster and faster to show a countdown
|
||||||
|
"""
|
||||||
for i in range(iters, 0, -1):
|
for i in range(iters, 0, -1):
|
||||||
self.led.on()
|
self.led.on()
|
||||||
sleep(i / multi)
|
sleep(i / multi)
|
||||||
@@ -100,7 +116,10 @@ class Raspberry(object):
|
|||||||
sleep(i / multi)
|
sleep(i / multi)
|
||||||
|
|
||||||
def indicator_led(self, timing=0.2, l=5):
|
def indicator_led(self, timing=0.2, l=5):
|
||||||
for i in range(l):
|
"""
|
||||||
|
Turns on the indicator LED for a certain period of time
|
||||||
|
"""
|
||||||
|
for _ in range(l):
|
||||||
self.app.logger.debug("LED turned on")
|
self.app.logger.debug("LED turned on")
|
||||||
self.led.on()
|
self.led.on()
|
||||||
sleep(timing)
|
sleep(timing)
|
||||||
@@ -109,6 +128,9 @@ class Raspberry(object):
|
|||||||
sleep(timing)
|
sleep(timing)
|
||||||
|
|
||||||
def flash_toggle(self):
|
def flash_toggle(self):
|
||||||
|
"""
|
||||||
|
Flashes the flash
|
||||||
|
"""
|
||||||
self.app.logger.debug("Flash turned on")
|
self.app.logger.debug("Flash turned on")
|
||||||
self.flash.on()
|
self.flash.on()
|
||||||
sleep(0.3)
|
sleep(0.3)
|
||||||
@@ -116,6 +138,9 @@ class Raspberry(object):
|
|||||||
self.app.logger.debug("Flash turned off")
|
self.app.logger.debug("Flash turned off")
|
||||||
|
|
||||||
def take_picture(self):
|
def take_picture(self):
|
||||||
|
"""
|
||||||
|
Takes a picture via the USB webcam
|
||||||
|
"""
|
||||||
# Validate if the image path is valid
|
# Validate if the image path is valid
|
||||||
if not os.path.isdir(os.path.dirname(self.image_path)):
|
if not os.path.isdir(os.path.dirname(self.image_path)):
|
||||||
self.app.logger.error(
|
self.app.logger.error(
|
||||||
@@ -141,7 +166,7 @@ class Raspberry(object):
|
|||||||
f"Unable to take a picture. Error: {e.stderr.decode()}"
|
f"Unable to take a picture. Error: {e.stderr.decode()}"
|
||||||
)
|
)
|
||||||
return False
|
return False
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
# Catch any unexpected errors
|
# Catch any unexpected errors
|
||||||
self.app.logger.error(f"Unexpected error while taking picture: {str(e)}")
|
self.app.logger.error(f"Unexpected error while taking picture: {str(e)}")
|
||||||
return False
|
return False
|
||||||
@@ -161,6 +186,9 @@ class Raspberry(object):
|
|||||||
position="bottom_right",
|
position="bottom_right",
|
||||||
margin=10,
|
margin=10,
|
||||||
):
|
):
|
||||||
|
"""
|
||||||
|
Takes an image and overlays it with a another picture.
|
||||||
|
"""
|
||||||
try:
|
try:
|
||||||
image = Image.open(image_path).convert("RGBA")
|
image = Image.open(image_path).convert("RGBA")
|
||||||
logo = Image.open(logo_path).convert("RGBA")
|
logo = Image.open(logo_path).convert("RGBA")
|
||||||
@@ -187,7 +215,9 @@ class Raspberry(object):
|
|||||||
y = image.height - logo.height - margin
|
y = image.height - logo.height - margin
|
||||||
else:
|
else:
|
||||||
raise ValueError(
|
raise ValueError(
|
||||||
"Invalid position. Choose from 'bottom_right', 'top_left', 'top_right', or 'bottom_left'."
|
"Invalid position."
|
||||||
|
+ "Choose from 'bottom_right', 'top_left', "
|
||||||
|
+ " 'top_right', or 'bottom_left'."
|
||||||
)
|
)
|
||||||
|
|
||||||
# Composite the logo onto the image
|
# Composite the logo onto the image
|
||||||
@@ -198,13 +228,16 @@ class Raspberry(object):
|
|||||||
output_path = image_path # Overwrite the original image if no output path is given
|
output_path = image_path # Overwrite the original image if no output path is given
|
||||||
image.save(output_path)
|
image.save(output_path)
|
||||||
|
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
self.app.logger.error(f"Error overlaying logo: {e}")
|
self.app.logger.error(f"Error overlaying logo: {e}")
|
||||||
return False
|
return False
|
||||||
|
|
||||||
return True
|
return True
|
||||||
|
|
||||||
def crop_to_square(self, image_path, output_path=None):
|
def crop_to_square(self, image_path, output_path=None):
|
||||||
|
"""
|
||||||
|
Crop an image so that it becomes a square
|
||||||
|
"""
|
||||||
try:
|
try:
|
||||||
image = Image.open(image_path)
|
image = Image.open(image_path)
|
||||||
width, height = image.size
|
width, height = image.size
|
||||||
@@ -225,13 +258,17 @@ class Raspberry(object):
|
|||||||
|
|
||||||
image.save(output_path)
|
image.save(output_path)
|
||||||
|
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
self.app.logger.error(f"Error cropping image to square: {e}")
|
self.app.logger.error(f"Error cropping image to square: {e}")
|
||||||
return False
|
return False
|
||||||
|
|
||||||
return True
|
return True
|
||||||
|
|
||||||
def on_button_pressed(self):
|
def on_button_pressed(self):
|
||||||
|
"""
|
||||||
|
When a button press is detected, a picture is taken from the webcam
|
||||||
|
and added to the print queue.
|
||||||
|
"""
|
||||||
self.app.logger.debug("Button has been pressed")
|
self.app.logger.debug("Button has been pressed")
|
||||||
self.led.on()
|
self.led.on()
|
||||||
self.app.logger.debug("Counting down")
|
self.app.logger.debug("Counting down")
|
||||||
@@ -242,7 +279,7 @@ class Raspberry(object):
|
|||||||
try:
|
try:
|
||||||
self.flash.on()
|
self.flash.on()
|
||||||
self.take_picture()
|
self.take_picture()
|
||||||
except Exception as e:
|
except RuntimeError as e:
|
||||||
self.app.logger.error(
|
self.app.logger.error(
|
||||||
"Could not take a picture after the button press : " + str(e)
|
"Could not take a picture after the button press : " + str(e)
|
||||||
)
|
)
|
||||||
@@ -251,15 +288,13 @@ class Raspberry(object):
|
|||||||
self.app.logger.debug("Printing picture")
|
self.app.logger.debug("Printing picture")
|
||||||
self.led.on()
|
self.led.on()
|
||||||
self.crop_to_square(self.image_path)
|
self.crop_to_square(self.image_path)
|
||||||
self.printer.print_img("src/static/images/extase-club.png", process=True)
|
self.print_queue.enqueue(ImageTask(self.image_path, signature="", process=True))
|
||||||
self.printer.print_img(self.image_path, process=True)
|
self.print_queue.enqueue(
|
||||||
self.printer.print_sms("")
|
TextTask(content="Imprimé par LittlePrynter", signature="")
|
||||||
self.printer.print_sms("With Love From Société.Vide", signature="", bold=True)
|
)
|
||||||
self.printer.print_sms("Printed by LittlePrynter", signature="")
|
time = strftime("%Y-%m-%d %H:%M", gmtime())
|
||||||
self.printer.print_sms("n07070.xyz", signature="")
|
self.print_queue.enqueue(TextTask(content=time, signature=""))
|
||||||
self.printer.print_sms(strftime("%Y-%m-%d %H:%M", gmtime()), signature="")
|
self.print_queue.enqueue(CutTask())
|
||||||
self.printer.qr("https://n07070.xyz/articles/littleprynter")
|
|
||||||
self.printer.cut()
|
|
||||||
self.led.off()
|
self.led.off()
|
||||||
self.app.logger.debug("Done printing picture")
|
self.app.logger.debug("Added a photomaton picture to the print queue")
|
||||||
return True
|
return True
|
||||||
|
|||||||
BIN
src/static/font/MonospaceTypewriter.ttf
Normal file
BIN
src/static/font/MonospaceTypewriter.ttf
Normal file
Binary file not shown.
BIN
src/static/images/1x1.png
Normal file
BIN
src/static/images/1x1.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 153 B |
BIN
src/static/images/calibration.png
Normal file
BIN
src/static/images/calibration.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 8.2 KiB |
@@ -255,7 +255,12 @@ function print_picture(data){
|
|||||||
// headers:{
|
// headers:{
|
||||||
// 'Content-Type': 'multipart/form-data'
|
// 'Content-Type': 'multipart/form-data'
|
||||||
// }
|
// }
|
||||||
}).then(function(response) { console.log('Success:', response); } , true)
|
}).then(function(response) {
|
||||||
|
console.log('Reponse:', response);
|
||||||
|
if(response.status != 200 ){
|
||||||
|
alert("The picture could not be printed be : " + response.statusText)
|
||||||
|
}
|
||||||
|
} , true)
|
||||||
.catch(error => console.error('Error:', error), false);
|
.catch(error => console.error('Error:', error), false);
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
110
src/task.py
Normal file
110
src/task.py
Normal file
@@ -0,0 +1,110 @@
|
|||||||
|
"""
|
||||||
|
Here we define the types of tasks
|
||||||
|
We are using Abstract Base Classes,
|
||||||
|
like this we can define types of tasks ( text, images, ... )
|
||||||
|
that all work with the same basic options
|
||||||
|
|
||||||
|
The tasks are going to be injected into a Queue.
|
||||||
|
It's a usefull way of storing information in our
|
||||||
|
program, while making sure that things are indeed printed.
|
||||||
|
It's also a way to prevent two concurrent connexions creating
|
||||||
|
a access conflict on a single printer, like two people wanting
|
||||||
|
to print at the same time.
|
||||||
|
|
||||||
|
We can also delay and store printing tasks until a printer becomes
|
||||||
|
available if none is online.
|
||||||
|
"""
|
||||||
|
|
||||||
|
from abc import ABC, abstractmethod
|
||||||
|
|
||||||
|
## See https://docs.python.org/3/library/abc.html to learn more about this
|
||||||
|
|
||||||
|
from enum import Enum
|
||||||
|
import uuid
|
||||||
|
|
||||||
|
|
||||||
|
## You can expand this if you want to take other types of tasks into account
|
||||||
|
class TaskType(Enum):
|
||||||
|
"""
|
||||||
|
The different tasks supported by the printers
|
||||||
|
"""
|
||||||
|
|
||||||
|
TEXT = "text"
|
||||||
|
IMAGE = "image"
|
||||||
|
CUT = "cut"
|
||||||
|
QR = "qr"
|
||||||
|
|
||||||
|
|
||||||
|
class PrintTask(ABC):
|
||||||
|
"""
|
||||||
|
A print task holds information about what we are looking to print.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, task_type: TaskType):
|
||||||
|
self.task_id = self._generate_id()
|
||||||
|
self.task_type = task_type
|
||||||
|
self.status = "pending" # pending, processing, completed, failed
|
||||||
|
|
||||||
|
@abstractmethod
|
||||||
|
def get_print_data(self):
|
||||||
|
"""Return data formatted for printer"""
|
||||||
|
|
||||||
|
def _generate_id(self):
|
||||||
|
# Generate unique task ID
|
||||||
|
return str(uuid.uuid4())
|
||||||
|
|
||||||
|
|
||||||
|
class TextTask(PrintTask):
|
||||||
|
"""
|
||||||
|
This tasks represents a texte content, and it's signature.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, content, signature):
|
||||||
|
super().__init__(TaskType.TEXT)
|
||||||
|
self.content = content
|
||||||
|
self.signature = signature
|
||||||
|
|
||||||
|
def get_print_data(self):
|
||||||
|
return {"txt": self.content, "sign": self.signature}
|
||||||
|
|
||||||
|
|
||||||
|
class QRTask(TextTask):
|
||||||
|
"""This task prints a QR-Code, the signature is ignore and is always the content itself"""
|
||||||
|
|
||||||
|
def __init__(self, content):
|
||||||
|
super().__init__(content, signature="")
|
||||||
|
self.content = content
|
||||||
|
self.signature = content
|
||||||
|
|
||||||
|
def get_print_data(self):
|
||||||
|
return {"txt": self.content, "sign": self.signature}
|
||||||
|
|
||||||
|
|
||||||
|
class ImageTask(PrintTask):
|
||||||
|
"""
|
||||||
|
This tasks represents a image content ( in the form of it's path ), and it's signature.
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, image_path, signature, process):
|
||||||
|
super().__init__(TaskType.IMAGE)
|
||||||
|
self.image_path = image_path
|
||||||
|
self.signature = signature
|
||||||
|
self.process = process
|
||||||
|
|
||||||
|
def get_print_data(self):
|
||||||
|
# Return image data in printer-compatible format
|
||||||
|
return {"img": self.image_path, "sign": self.signature, "process": self.process}
|
||||||
|
|
||||||
|
|
||||||
|
class CutTask(PrintTask):
|
||||||
|
"""
|
||||||
|
This class activates the cutter on the printer if it exists
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self):
|
||||||
|
super().__init__(TaskType.CUT)
|
||||||
|
|
||||||
|
# There is no print data,
|
||||||
|
# the task existence in itself is indication of what to do
|
||||||
|
def get_print_data(self):
|
||||||
|
return None
|
||||||
@@ -5,6 +5,6 @@
|
|||||||
<title>LittlePrynter API</title>
|
<title>LittlePrynter API</title>
|
||||||
</head>
|
</head>
|
||||||
<body>
|
<body>
|
||||||
"Welcome to the printing software's API. Please see the index page to get started.
|
Welcome to the printing software's API. Please see the index page to get started.
|
||||||
</body>
|
</body>
|
||||||
</html>
|
</html>
|
||||||
|
|||||||
@@ -53,7 +53,7 @@
|
|||||||
<hr>
|
<hr>
|
||||||
|
|
||||||
<footer class="row">
|
<footer class="row">
|
||||||
<p class=" text-center">Little Prynter is built by <a href="https://n07070.xyz/about-me/">n07070</a> because it's fun :) | <a href="https://git.n07070.xyz/n07070/littleprynter">Source code - AGPLv3</a></p>
|
<p class=" text-center">Little Prynter is built by <a href="https://n07070.xyz/about-me/">n07070</a> because it's fun :) | <a href="/api">API interface</a> | <a href="https://git.n07070.xyz/n07070/littleprynter">Source code - AGPLv3</a></p>
|
||||||
</footer>
|
</footer>
|
||||||
</body>
|
</body>
|
||||||
<script src="https://cdn.socket.io/4.0.0/socket.io.min.js"></script>
|
<script src="https://cdn.socket.io/4.0.0/socket.io.min.js"></script>
|
||||||
|
|||||||
@@ -1,5 +0,0 @@
|
|||||||
<hr>
|
|
||||||
<footer>Little Prynter is built by <a href="https://n07070.xyz/about-me/">n07070</a> because it's fun :) | <a href="https://git.n07070.xyz/n07070/littleprynter/src/branch/epson-tm-t20iii">Source code - AGPLv3</a></footer>
|
|
||||||
</div>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
||||||
@@ -5,10 +5,24 @@
|
|||||||
<div class="card">
|
<div class="card">
|
||||||
<h3 class="card-header">Print a short message</h3>
|
<h3 class="card-header">Print a short message</h3>
|
||||||
<div class="card-body">
|
<div class="card-body">
|
||||||
<form class="form-group" action="/api/print/sms" method="post">
|
<form class="form-group" action="/web/print/sms" method="post">
|
||||||
<input class="form-control" type="text" name="txt" placeholder="200 chars or less " maxlength="200" required><br>
|
<textarea class="form-control" type="text" name="txt" placeholder="4096 caractères maximum " maxlength="4096"></textarea>
|
||||||
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
|
<br>
|
||||||
|
<input class="form-control" type="text" name="signature" placeholder="Signature ou pseudo" maxlength="200"><br>
|
||||||
|
<div class="input-group">
|
||||||
|
<span class="input-group-text">Combien ?</span>
|
||||||
|
<input type="number" aria-label="how-many" class="form-control" name="many" max="20" min="1" value="1">
|
||||||
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
||||||
|
</div>
|
||||||
|
<br>
|
||||||
|
<div class="form-check">
|
||||||
|
<input class="form-check-input" type="checkbox" value="True" id="flexCheckDefault" name="cut" checked>
|
||||||
|
<label class="form-check-label" for="flexCheckDefault">
|
||||||
|
Couper après impression ?
|
||||||
|
</label>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
|
||||||
</form>
|
</form>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</div>
|
||||||
@@ -18,10 +32,28 @@
|
|||||||
<div class="card">
|
<div class="card">
|
||||||
<h3 class="card-header">Print an image</h3>
|
<h3 class="card-header">Print an image</h3>
|
||||||
<div class="card-body">
|
<div class="card-body">
|
||||||
<form enctype="multipart/form-data" class="form-group" action="/api/print/img" method="post">
|
<form enctype="multipart/form-data" class="form-group" action="/web/print/img" method="post">
|
||||||
<input class="form-control" type="file" name="img" required><br>
|
<input class="form-control" type="file" name="img" required><br>
|
||||||
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
|
<input class="form-control" type="text" name="signature" placeholder="Signature ou pseudo" maxlength="200"><br>
|
||||||
|
<div class="input-group">
|
||||||
|
<span class="input-group-text">Combien ?</span>
|
||||||
|
<input type="number" aria-label="how-many" class="form-control" name="many" max="20" min="1" value="1">
|
||||||
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
||||||
|
</div>
|
||||||
|
<br>
|
||||||
|
<div class="form-check .form-check-inline">
|
||||||
|
<input class="form-check-input" type="checkbox" value="True" id="flexCheckDefault" name="cut" checked>
|
||||||
|
<label class="form-check-label" for="flexCheckDefault">
|
||||||
|
Couper après impression ?
|
||||||
|
</label>
|
||||||
|
</div>
|
||||||
|
<div class="form-check .form-check-inline">
|
||||||
|
<input class="form-check-input" type="checkbox" value="True" id="flexCheckDefault" name="process">
|
||||||
|
<label class="form-check-label" for="flexCheckDefault">
|
||||||
|
Traiter l'image ?
|
||||||
|
</label>
|
||||||
|
</div>
|
||||||
|
|
||||||
</form>
|
</form>
|
||||||
</div>
|
</div>
|
||||||
</div>
|
</div>
|
||||||
|
|||||||
@@ -1,30 +0,0 @@
|
|||||||
<!DOCTYPE html>
|
|
||||||
<html>
|
|
||||||
<head>
|
|
||||||
<meta charset="utf-8">
|
|
||||||
<title>Log in</title>
|
|
||||||
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
|
|
||||||
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
|
|
||||||
<link rel="stylesheet" href="{{ url_for('static',filename='css/style.css') }}">
|
|
||||||
</head>
|
|
||||||
<body class="container">
|
|
||||||
<div class="col-md-6 offset-md-3">
|
|
||||||
<h1>Login</h1>
|
|
||||||
{% with messages = get_flashed_messages(with_categories=true) %}
|
|
||||||
{% if messages %}
|
|
||||||
{% for category, message in messages %}
|
|
||||||
<div class="alert alert-{{ category }}" role="alert">{{ message }}</div>
|
|
||||||
{% endfor %}
|
|
||||||
{% endif %}
|
|
||||||
{% endwith %}
|
|
||||||
|
|
||||||
<form action="/login" method="post">
|
|
||||||
<div class="form-group">
|
|
||||||
<input type="text" name="username" class="form-control" placeholder="Pseudo">
|
|
||||||
<input type="password" name="password" class="form-control" placeholder="Password">
|
|
||||||
<button type="submit" class="btn btn-primary">Submit</button>
|
|
||||||
</div>
|
|
||||||
</form>
|
|
||||||
</div>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
||||||
70
src/user.py
70
src/user.py
@@ -1,41 +1,41 @@
|
|||||||
class User(object):
|
# class User(object):
|
||||||
"""docstring for User."""
|
# """docstring for User."""
|
||||||
|
|
||||||
def __init__(self, arg):
|
# def __init__(self, arg):
|
||||||
super(User, self).__init__()
|
# super(User, self).__init__()
|
||||||
self.arg = arg
|
# self.arg = arg
|
||||||
|
|
||||||
|
|
||||||
# @app.route('/login', methods=['POST','GET'])
|
# # @app.route('/login', methods=['POST','GET'])
|
||||||
# @limiter.limit("100 per minute", error_message=error_handler_limiter)
|
# # @limiter.limit("100 per minute", error_message=error_handler_limiter)
|
||||||
def login():
|
# def login():
|
||||||
if request.method == "POST":
|
# if request.method == "POST":
|
||||||
if not session.get("logged_in"):
|
# if not session.get("logged_in"):
|
||||||
if request.form["username"] and request.form["password"]:
|
# if request.form["username"] and request.form["password"]:
|
||||||
# Get the json
|
# # Get the json
|
||||||
with open("users.json") as f:
|
# with open("users.json") as f:
|
||||||
users_file = json.load(f)
|
# users_file = json.load(f)
|
||||||
for user in users_file["users"]:
|
# for user in users_file["users"]:
|
||||||
if users_file["users"][user] == request.form["password"]:
|
# if users_file["users"][user] == request.form["password"]:
|
||||||
session["logged_in"] = True
|
# session["logged_in"] = True
|
||||||
session["user"] = request.form["username"]
|
# session["user"] = request.form["username"]
|
||||||
|
|
||||||
if not session.get("logged_in"):
|
# if not session.get("logged_in"):
|
||||||
flash("Mot de passe ou pseudo invalide.", "danger")
|
# flash("Mot de passe ou pseudo invalide.", "danger")
|
||||||
return redirect(url_for("login"))
|
# return redirect(url_for("login"))
|
||||||
else:
|
# else:
|
||||||
return redirect(url_for("display_index_page"))
|
# return redirect(url_for("display_index_page"))
|
||||||
else:
|
# else:
|
||||||
flash("Incorrect logins")
|
# flash("Incorrect logins")
|
||||||
return render_template("password.html")
|
# return render_template("password.html")
|
||||||
else:
|
# else:
|
||||||
return render_template("password.html")
|
# return render_template("password.html")
|
||||||
else:
|
# else:
|
||||||
return render_template("password.html")
|
# return render_template("password.html")
|
||||||
|
|
||||||
|
|
||||||
@app.route("/logout")
|
# @app.route("/logout")
|
||||||
def logout():
|
# def logout():
|
||||||
session["logged_in"] = False
|
# session["logged_in"] = False
|
||||||
flash("Tu est déconnecté", "info")
|
# flash("Tu est déconnecté", "info")
|
||||||
return redirect(url_for("login"))
|
# return redirect(url_for("login"))
|
||||||
|
|||||||
126
src/web.py
126
src/web.py
@@ -1,59 +1,95 @@
|
|||||||
from flask import Flask, request, flash
|
"""
|
||||||
from werkzeug.utils import secure_filename
|
Manage all of the inputs from a web source
|
||||||
from printer import Printer
|
"""
|
||||||
import time
|
|
||||||
import os
|
import os
|
||||||
|
from werkzeug.utils import secure_filename
|
||||||
|
from task import TextTask, ImageTask, CutTask
|
||||||
|
|
||||||
|
|
||||||
class Web(object):
|
class Web:
|
||||||
"""docstring for web."""
|
"""Web is the class that gets all of the information from web calls
|
||||||
|
( API and Web page ) and provides checks before sending stuff to printing"""
|
||||||
|
|
||||||
def __init__(self, app, printer):
|
def __init__(self, app, print_queue):
|
||||||
super(Web).__init__()
|
super(Web).__init__()
|
||||||
self.printer = printer
|
self.print_queue = print_queue
|
||||||
self.app = app
|
self.app = app
|
||||||
|
|
||||||
def print_sms(self, texte, sign: str):
|
def print_sms(self, texte, sign: str, do_cut: bool, many: int = 1) -> bool:
|
||||||
# TODO: verify the texte before printing it here ?
|
"""
|
||||||
|
Get text and a signature, prints the text and cuts after that.
|
||||||
|
"""
|
||||||
self.app.logger.debug("Printing : " + str(texte) + " from " + str(sign))
|
self.app.logger.debug("Printing : " + str(texte) + " from " + str(sign))
|
||||||
|
|
||||||
try:
|
try:
|
||||||
self.printer.print_sms(texte, sign)
|
# We create two new tasks and add them directly to the queue
|
||||||
self.printer.cut()
|
# TODO: this might need to be improved because
|
||||||
|
# !! there is no garantee !! that both the SMS task and the Cut task
|
||||||
|
# are added back to back, another task could be
|
||||||
|
# inserted between the two.
|
||||||
|
for i in range(many):
|
||||||
|
sms = self.print_queue.enqueue(TextTask(content=texte, signature=sign))
|
||||||
|
self.app.logger.info("Added a SMS task at position %s", sms)
|
||||||
|
if do_cut:
|
||||||
|
cut = self.print_queue.enqueue(CutTask())
|
||||||
|
self.app.logger.info("Added a CUT task at position %s", cut)
|
||||||
|
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
self.app.logger.error(e)
|
self.app.logger.error(e)
|
||||||
flash("Error while printing the SMS : " + str(e))
|
raise RuntimeError("Could not add SMS to queue, " + str(e)) from e
|
||||||
|
|
||||||
flash("You message " + str(texte) + " has been printed :)")
|
return True
|
||||||
|
|
||||||
def print_image(self, image, sign):
|
def print_image(
|
||||||
self.app.logger.debug("Uploading file")
|
self, image, sign: str, do_cut: bool, process_image: bool, many: int = 1
|
||||||
|
) -> bool:
|
||||||
|
"""
|
||||||
|
Get an image and a signature, prints the image and cuts after that.
|
||||||
|
"""
|
||||||
try:
|
try:
|
||||||
self.app.logger.debug("Uploading file from " + str(sign))
|
file_uploaded = self.upload_file(image)
|
||||||
if self.upload_file(image):
|
except Exception as e:
|
||||||
|
self.app.logger.error(e)
|
||||||
|
raise RuntimeError("Could not upload file : " + str(e)) from e
|
||||||
|
|
||||||
|
if file_uploaded:
|
||||||
self.app.logger.debug("File has been uploaded, printing...")
|
self.app.logger.debug("File has been uploaded, printing...")
|
||||||
self.printer.print_img(
|
try:
|
||||||
|
for i in range(many):
|
||||||
|
img = self.print_queue.enqueue(
|
||||||
|
ImageTask(
|
||||||
os.path.join(
|
os.path.join(
|
||||||
self.app.config["UPLOAD_FOLDER"],
|
self.app.config["UPLOAD_FOLDER"],
|
||||||
secure_filename(image.filename),
|
secure_filename(image.filename),
|
||||||
),
|
),
|
||||||
sign=sign,
|
signature=sign,
|
||||||
process=True,
|
process=process_image,
|
||||||
)
|
)
|
||||||
self.printer.cut()
|
)
|
||||||
|
self.app.logger.info("Added a IMG task at position %s", img)
|
||||||
|
|
||||||
|
if do_cut:
|
||||||
|
cut = self.print_queue.enqueue(CutTask())
|
||||||
|
self.app.logger.info("Added a CUT task at position %s", cut)
|
||||||
except Exception as e:
|
except Exception as e:
|
||||||
self.app.logger.error(e)
|
raise RuntimeError("Could not add IMG to queue" + str(e)) from e
|
||||||
flash("Could not upload file." + str(e))
|
|
||||||
|
|
||||||
flash("Your image has been printed :)")
|
return True
|
||||||
|
|
||||||
def login(username: str, password: str) -> bool:
|
# def login(self, username: str, password: str) -> bool:
|
||||||
pass
|
# """Not implemented"""
|
||||||
|
# return
|
||||||
|
|
||||||
def logout(username: str, password: str) -> bool:
|
# def logout(self, username: str, password: str) -> bool:
|
||||||
pass
|
# """Not implemented"""
|
||||||
|
# return
|
||||||
|
|
||||||
def allowed_file(self, filename) -> bool:
|
def allowed_file(self, filename) -> bool:
|
||||||
self.app.logger.debug("Is the filename allowed ?")
|
"""
|
||||||
|
Check if the file extension is allowed
|
||||||
|
"""
|
||||||
|
self.app.logger.debug("Checking if the file extension is allowed")
|
||||||
return (
|
return (
|
||||||
"." in filename
|
"." in filename
|
||||||
and filename.rsplit(".", 1)[1].lower()
|
and filename.rsplit(".", 1)[1].lower()
|
||||||
@@ -61,23 +97,35 @@ class Web(object):
|
|||||||
)
|
)
|
||||||
|
|
||||||
def upload_file(self, image) -> bool:
|
def upload_file(self, image) -> bool:
|
||||||
|
"""
|
||||||
|
Save the file after executing checks on it
|
||||||
|
"""
|
||||||
self.app.logger.debug("Validating file")
|
self.app.logger.debug("Validating file")
|
||||||
if image and self.allowed_file(image.filename):
|
if not image is None or not image == "":
|
||||||
|
if self.allowed_file(image.filename):
|
||||||
filename = secure_filename(image.filename)
|
filename = secure_filename(image.filename)
|
||||||
self.app.logger.debug("File valid")
|
self.app.logger.debug("File valid")
|
||||||
try:
|
try:
|
||||||
image.save(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
image.save(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||||
self.app.logger.debug("File saved")
|
except OSError as e:
|
||||||
except Exception as e:
|
self.app.logger.error("Could not save file %s", e)
|
||||||
self.app.logger.error("Could not save file")
|
raise RuntimeError(
|
||||||
flash(str(e), "error")
|
"An OS error occured while uploading this file : " + str(e)
|
||||||
return False
|
) from e
|
||||||
|
|
||||||
self.app.logger.debug(
|
self.app.logger.debug(
|
||||||
"File saved to "
|
"File saved to "
|
||||||
+ str(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
+ str(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||||
)
|
)
|
||||||
return True
|
return True
|
||||||
else:
|
|
||||||
self.app.logger.error("Could not save file " + str(filename))
|
self.app.logger.error("Could not save file because the filename is forbidden")
|
||||||
return False
|
raise RuntimeError("This file type is forbidden.")
|
||||||
|
|
||||||
|
def get_queue_state(self):
|
||||||
|
"""Return current queue state"""
|
||||||
|
return self.print_queue.get_queue_state()
|
||||||
|
|
||||||
|
def get_queue_completed(self):
|
||||||
|
"""Return completed queue elements"""
|
||||||
|
return self.print_queue.get_queue_completed()
|
||||||
|
|||||||
186
src/worker.py
Normal file
186
src/worker.py
Normal file
@@ -0,0 +1,186 @@
|
|||||||
|
"""
|
||||||
|
This is the main printing thread. A worker thread consums Tasks from
|
||||||
|
a PrintQueue, while trying to find available printers.
|
||||||
|
"""
|
||||||
|
|
||||||
|
import threading
|
||||||
|
import time
|
||||||
|
import traceback
|
||||||
|
|
||||||
|
|
||||||
|
class PrintWorker(threading.Thread):
|
||||||
|
"""
|
||||||
|
A thread used to consume Tasks added to a Print Queue.
|
||||||
|
|
||||||
|
On initialisation, the worker will try to find Printers,
|
||||||
|
and on each print, if the choosen Printer becomes unavailable, it
|
||||||
|
will choose an available Printer from a list of Printers.
|
||||||
|
|
||||||
|
If a print fails, it's not retried, but will be added to a list of completed
|
||||||
|
tasks. TODO : Change that
|
||||||
|
"""
|
||||||
|
|
||||||
|
def __init__(self, app, print_queue, printers_pool, printer_index=0):
|
||||||
|
super().__init__(daemon=True)
|
||||||
|
self.app = app
|
||||||
|
self.print_queue = print_queue
|
||||||
|
self.printer = None
|
||||||
|
self._lock = threading.Lock()
|
||||||
|
self.running = True
|
||||||
|
self.state = "idle" # idle, printing, dead, drinking-a-beer
|
||||||
|
|
||||||
|
# All workers share the same pool of printers.
|
||||||
|
self.printers = printers_pool
|
||||||
|
self.printers_obj = self.printers.printers
|
||||||
|
# If we create several workers, we can assign an index
|
||||||
|
# so that we lookup the nth printer for the nth worker
|
||||||
|
self._printer_index = printer_index
|
||||||
|
|
||||||
|
self.app.logger.debug("Worker initialized.")
|
||||||
|
self.app.logger.debug("Printers connected:")
|
||||||
|
for printer in self.printers_obj:
|
||||||
|
self.app.logger.debug("Printer type: %s", printer.printer_type)
|
||||||
|
self.app.logger.debug("Printer state: %s", printer.ready)
|
||||||
|
|
||||||
|
self.app.logger.debug("Ho great, I'm alive... I'm ready to work another day...")
|
||||||
|
|
||||||
|
def _acquire_available_printer(self):
|
||||||
|
result = self.printers.acquire_available_printer(
|
||||||
|
start_index=self._printer_index
|
||||||
|
)
|
||||||
|
if result is None:
|
||||||
|
return None
|
||||||
|
|
||||||
|
index, printer = result
|
||||||
|
# In case we need to lookup another printer, we don't
|
||||||
|
# look at the same printer in the printer list
|
||||||
|
self._printer_index = (index + 1) % len(self.printers_obj)
|
||||||
|
return printer
|
||||||
|
|
||||||
|
def run(self):
|
||||||
|
"""Background thread that processes queue items"""
|
||||||
|
self.app.logger.debug("Worker %s started working.", threading.get_ident())
|
||||||
|
self.app.logger.debug("Current threads : %s", threading.active_count())
|
||||||
|
self.app.logger.debug("Threads actives : %s ", threading.enumerate())
|
||||||
|
|
||||||
|
while True:
|
||||||
|
|
||||||
|
# If the printer is dead or asleep, it can't work.
|
||||||
|
if not self.running:
|
||||||
|
time.sleep(0.2)
|
||||||
|
continue
|
||||||
|
|
||||||
|
# If we have no available printer, we look at the list printers
|
||||||
|
# we know about, and try to find one that is available.
|
||||||
|
# When we find a printer, we acquire it
|
||||||
|
# When we are finished with a printer, we release it to the world.
|
||||||
|
|
||||||
|
# If we do not have a printer, we try to find one
|
||||||
|
|
||||||
|
while self.running and self.printer is None:
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Trying to find a available printer for the worker."
|
||||||
|
)
|
||||||
|
self.printer = self._acquire_available_printer()
|
||||||
|
self.app.logger.debug(
|
||||||
|
"The worker got a %s printer and it's %s",
|
||||||
|
self.printer.printer_type,
|
||||||
|
"Ready" if self.printer.ready else "Not ready",
|
||||||
|
)
|
||||||
|
|
||||||
|
if self.printer is None:
|
||||||
|
time.sleep(1)
|
||||||
|
|
||||||
|
self.printer.use_printer()
|
||||||
|
|
||||||
|
# If the printer is not ready, we wait for it to become ready.
|
||||||
|
while not self.printer.ready:
|
||||||
|
self.app.debug("Waiting for our printer to become ready...")
|
||||||
|
time.sleep(1)
|
||||||
|
|
||||||
|
if self.state != "idle":
|
||||||
|
self.app.logger("We are not idle, waiting...")
|
||||||
|
time.sleep(1)
|
||||||
|
continue
|
||||||
|
|
||||||
|
self.state = "printing"
|
||||||
|
|
||||||
|
with self._lock:
|
||||||
|
try:
|
||||||
|
task = self.print_queue.dequeue()
|
||||||
|
except Exception as e:
|
||||||
|
self.app.logger.error("Could not get a new task ! %s ", str(e))
|
||||||
|
self.state = "idle"
|
||||||
|
self.printer.free_printer()
|
||||||
|
raise RuntimeError(
|
||||||
|
"We could not get a new task because " + str(e)
|
||||||
|
) from e
|
||||||
|
|
||||||
|
if task:
|
||||||
|
try:
|
||||||
|
self.app.logger.info("Got a new task")
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Got task %s %s", task.task_type, task.task_id
|
||||||
|
)
|
||||||
|
task.status = "processing"
|
||||||
|
|
||||||
|
print_data = task.get_print_data()
|
||||||
|
|
||||||
|
try:
|
||||||
|
self.printer.print_task(task.task_type, print_data)
|
||||||
|
except RuntimeError as e:
|
||||||
|
self.state = "idle"
|
||||||
|
self.app.logger.error("Could not print : %s", str(e))
|
||||||
|
self.app.logger.error(traceback.format_exc())
|
||||||
|
self.printer.free_printer()
|
||||||
|
|
||||||
|
task.status = "completed"
|
||||||
|
self.print_queue.mark_completed(task.task_id, "completed")
|
||||||
|
self.app.logger.debug(
|
||||||
|
"Finished printing task %s ", task.task_id
|
||||||
|
)
|
||||||
|
self.state = "idle"
|
||||||
|
|
||||||
|
except RuntimeError as e:
|
||||||
|
task.status = "failed"
|
||||||
|
self.state = "idle"
|
||||||
|
self.print_queue.mark_completed(task.task_id, "failed")
|
||||||
|
self.app.logger.error(
|
||||||
|
"Could not print task %s because %s ", task.task_id, str(e)
|
||||||
|
)
|
||||||
|
|
||||||
|
else:
|
||||||
|
# When they are no new tasks to handle, we put the thread to sleep.
|
||||||
|
self.state = "idle"
|
||||||
|
time.sleep(0.1)
|
||||||
|
|
||||||
|
def stop_worker(self):
|
||||||
|
"""
|
||||||
|
Give the worker a break
|
||||||
|
"""
|
||||||
|
self.app.logger.debug("Giving the worker a break")
|
||||||
|
self.state = "drinking-a-beer"
|
||||||
|
# Free the printer during the worker break
|
||||||
|
# so it can be used by someone else
|
||||||
|
self.printer.free_printer()
|
||||||
|
self.printer = None
|
||||||
|
self.running = False
|
||||||
|
|
||||||
|
def start_worker(self):
|
||||||
|
"""
|
||||||
|
Get the worker back to it
|
||||||
|
"""
|
||||||
|
self.app.logger.debug("Time to work !")
|
||||||
|
self.state = "idle"
|
||||||
|
self.running = True
|
||||||
|
|
||||||
|
def current_state(self):
|
||||||
|
"""
|
||||||
|
Return the worker state
|
||||||
|
"""
|
||||||
|
return {
|
||||||
|
"is_running": self.running,
|
||||||
|
"queue_size": len(self.print_queue),
|
||||||
|
"state": self.state,
|
||||||
|
"printers": len(self.printers_obj),
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user