├── .gitignore ├── LICENSE ├── README.md ├── label_api ├── label_api.bat ├── label_plugins └── namebadge │ ├── LICENSE.fonts.txt │ ├── Roboto-Medium.ttf │ ├── Roboto-Regular.ttf │ └── __init__.py ├── plugin_loader.py ├── requirements.bat └── requirements.txt /.gitignore: -------------------------------------------------------------------------------- 1 | # Byte-compiled / optimized / DLL files 2 | __pycache__/ 3 | *.py[cod] 4 | *$py.class 5 | 6 | # C extensions 7 | *.so 8 | 9 | # Distribution / packaging 10 | .Python 11 | build/ 12 | develop-eggs/ 13 | dist/ 14 | downloads/ 15 | eggs/ 16 | .eggs/ 17 | lib/ 18 | lib64/ 19 | parts/ 20 | sdist/ 21 | var/ 22 | wheels/ 23 | *.egg-info/ 24 | .installed.cfg 25 | *.egg 26 | MANIFEST 27 | 28 | # PyInstaller 29 | # Usually these files are written by a python script from a template 30 | # before PyInstaller builds the exe, so as to inject date/other infos into it. 31 | *.manifest 32 | *.spec 33 | 34 | # Installer logs 35 | pip-log.txt 36 | pip-delete-this-directory.txt 37 | 38 | # Unit test / coverage reports 39 | htmlcov/ 40 | .tox/ 41 | .coverage 42 | .coverage.* 43 | .cache 44 | nosetests.xml 45 | coverage.xml 46 | *.cover 47 | .hypothesis/ 48 | .pytest_cache/ 49 | 50 | # Translations 51 | *.mo 52 | *.pot 53 | 54 | # Django stuff: 55 | *.log 56 | local_settings.py 57 | db.sqlite3 58 | 59 | # Flask stuff: 60 | instance/ 61 | .webassets-cache 62 | 63 | # Scrapy stuff: 64 | .scrapy 65 | 66 | # Sphinx documentation 67 | docs/_build/ 68 | 69 | # PyBuilder 70 | target/ 71 | 72 | # Jupyter Notebook 73 | .ipynb_checkpoints 74 | 75 | # pyenv 76 | .python-version 77 | 78 | # celery beat schedule file 79 | celerybeat-schedule 80 | 81 | # SageMath parsed files 82 | *.sage.py 83 | 84 | # Environments 85 | .env 86 | .venv 87 | env/ 88 | venv/ 89 | ENV/ 90 | env.bak/ 91 | venv.bak/ 92 | 93 | # Spyder project settings 94 | .spyderproject 95 | .spyproject 96 | 97 | # Rope project settings 98 | .ropeproject 99 | 100 | # mkdocs documentation 101 | /site 102 | 103 | # mypy 104 | .mypy_cache/ 105 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # label\_api 2 | 3 | Install requirements: 4 | 5 | pip install -r requirements.txt 6 | 7 | Run: 8 | 9 | ./label_api --help 10 | # for example: 11 | ./label_api --port 8080 --model QL-800 --printer usb://0x04f9:0x2015 --backend pyusb 12 | 13 | The CLI signature of `label_api` is as follows: 14 | 15 | Usage: label_api [OPTIONS] 16 | 17 | Start the label_api software 18 | 19 | Options: 20 | --host TEXT Host / IP to listen on 21 | --port INTEGER Port to listen on 22 | --model TEXT brother_ql model 23 | --backend TEXT brother_ql backend 24 | --printer TEXT brother_ql printer 25 | --debug Enable verbose debugging output 26 | --help Show this message and exit. 27 | -------------------------------------------------------------------------------- /label_api: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | 3 | # std lib 4 | import logging, io 5 | 6 | # external deps 7 | import brother_ql 8 | import brother_ql.backends.helpers 9 | from bottle import route, run, template, request, response 10 | import click 11 | 12 | # internal modules 13 | import plugin_loader 14 | 15 | PLUGIN_FOLDER = "./label_plugins" 16 | 17 | LABEL_API_HOST = "0.0.0.0" 18 | LABEL_API_PORT = 8765 19 | 20 | BROTHER_QL_MODEL = "QL-800" 21 | BROTHER_QL_BACKEND = None 22 | BROTHER_QL_PRINTER = "file:///dev/usb/lp0" 23 | 24 | DEBUG = False 25 | 26 | @route('/api/preview/') 27 | def preview_label(label_plugin_name): 28 | params = dict(request.params.decode()) 29 | plugin = plugin_loader.get_plugin_by_name(label_plugin_name, PLUGIN_FOLDER) 30 | label = plugin.create_label(**params) 31 | if plugin.BROTHER_QL_LABEL == '62': 32 | from PIL import Image, ImageDraw 33 | full_size = label.size[0] + 36, label.size[1] + 36 34 | im = Image.new("L", full_size, (255,)) 35 | draw = ImageDraw.Draw(im) 36 | draw.rectangle(((17, 17), tuple(coord - 18 for coord in full_size)), outline=180) 37 | im.paste(label, box=(18, 18)) 38 | label = im 39 | byte_io = io.BytesIO() 40 | label.save(byte_io, 'PNG') 41 | byte_io.seek(0) 42 | response.content_type = 'image/png' 43 | return byte_io 44 | 45 | @route('/api/print/') 46 | def print_label(label_plugin_name): 47 | # url params: 48 | #params = request.params.dict 49 | params = dict(request.params.decode()) 50 | try: 51 | plugin = plugin_loader.get_plugin_by_name(label_plugin_name, PLUGIN_FOLDER) 52 | except plugin_loader.PluginNotFoundError: 53 | return {'success': False, 'status': 'Label ' + label_plugin_name + ' not found'} 54 | label = plugin.create_label(**params) 55 | qlr = brother_ql.raster.BrotherQLRaster(BROTHER_QL_MODEL) 56 | brother_ql.conversion.convert(qlr, [label], plugin.BROTHER_QL_LABEL, **plugin.BROTHER_QL_CONVERT_KWARGS) 57 | kwargs = { 58 | 'printer_identifier': BROTHER_QL_PRINTER, 59 | 'backend_identifier': BROTHER_QL_BACKEND, 60 | 'blocking': True, 61 | } 62 | try: 63 | result = brother_ql.backends.helpers.send(qlr.data, **kwargs) 64 | success = result['did_print'] and result['ready_for_next_job'] 65 | return {'success': success, 'result': result} 66 | except Exception as e: 67 | return {'success': False, 'exception': str(e)} 68 | 69 | def run_server(): 70 | logging.basicConfig(level='DEBUG' if DEBUG else 'ERROR') 71 | run(host=LABEL_API_HOST, port=LABEL_API_PORT) 72 | 73 | @click.command() 74 | @click.option('--host', default=LABEL_API_HOST, help='Host / IP to listen on') 75 | @click.option('--port', default=LABEL_API_PORT, help='Port to listen on') 76 | @click.option('--model', default=BROTHER_QL_MODEL , help='brother_ql model') 77 | @click.option('--backend', default=BROTHER_QL_BACKEND, help='brother_ql backend') 78 | @click.option('--printer', default=BROTHER_QL_PRINTER, help='brother_ql printer') 79 | @click.option('--debug', is_flag=True, help='Enable verbose debugging output') 80 | def cli(host, port, model, backend, printer, debug): 81 | """ 82 | Start the label_api software 83 | """ 84 | global LABEL_API_HOST, LABEL_API_PORT 85 | global BROTHER_QL_MODEL, BROTHER_QL_BACKEND, BROTHER_QL_PRINTER 86 | global DEBUG 87 | LABEL_API_HOST = host 88 | LABEL_API_PORT = port 89 | BROTHER_QL_MODEL = model 90 | BROTHER_QL_BACKEND = backend 91 | BROTHER_QL_PRINTER = printer 92 | DEBUG = debug 93 | run_server() 94 | 95 | if __name__ == '__main__': 96 | cli() 97 | -------------------------------------------------------------------------------- /label_api.bat: -------------------------------------------------------------------------------- 1 | python.exe label_api --model QL-800 --backend pyusb --printer usb://0x04f9:0x209b 2 | -------------------------------------------------------------------------------- /label_plugins/namebadge/LICENSE.fonts.txt: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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The text should be enclosed in the appropriate 185 | comment syntax for the file format. We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. 203 | -------------------------------------------------------------------------------- /label_plugins/namebadge/Roboto-Medium.ttf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/pklaus/label_api/9bc178d4c76d5081ac2061a6b80e1e7dafee5171/label_plugins/namebadge/Roboto-Medium.ttf -------------------------------------------------------------------------------- /label_plugins/namebadge/Roboto-Regular.ttf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/pklaus/label_api/9bc178d4c76d5081ac2061a6b80e1e7dafee5171/label_plugins/namebadge/Roboto-Regular.ttf -------------------------------------------------------------------------------- /label_plugins/namebadge/__init__.py: -------------------------------------------------------------------------------- 1 | """ 2 | ### Name Badge Plugin 3 | 4 | Fonts distributed with this plugin: 5 | 6 | * Roboto (License: Apache 2.0) 7 | """ 8 | 9 | import os 10 | from PIL import Image, ImageDraw, ImageFont 11 | 12 | # What's required from a plugin: 13 | # BROTHER_QL_LABEL, ARGUMENTS, create_label() 14 | 15 | BROTHER_QL_LABEL = "62" 16 | #BROTHER_QL_LABEL = "38" 17 | 18 | ARGUMENTS = { 19 | 'first': {'help': 'First Name', 'type': str, 'default': 'Emmanuelle'}, 20 | 'last': {'help': 'Last Name', 'type': str, 'default': 'Baroness Willoughby de Eresby'}, 21 | 'company': {'help': 'Company Name', 'type': str, 'default': 'Coláiste na Tríonóide, Baile Átha Cliath'}, 22 | } 23 | 24 | #FONT_REGULAR = "FreeSans.ttf" 25 | #FONT_MEDIUM = "FreeSansBold.ttf" 26 | FONT_REGULAR = "Roboto-Regular.ttf" 27 | FONT_MEDIUM = "Roboto-Medium.ttf" 28 | 29 | #LABEL_SIZE = (696, 756) 30 | LABEL_SIZE = (756, 696) 31 | #LABEL_SIZE = (413, 413) 32 | FONT_SCALING = 4.2 33 | #FONT_SCALING = 4.2*0.593 34 | 35 | BROTHER_QL_CONVERT_KWARGS = { 36 | 'rotate': '90', 37 | } 38 | 39 | def resource_path(rel_path): 40 | return os.path.join(os.path.dirname(__file__), rel_path) 41 | 42 | def create_label(first="", last="", company=""): 43 | if not first: first = ARGUMENTS['first']['default'] 44 | if not last: last = ARGUMENTS['last']['default'] 45 | if not company: company = ARGUMENTS['company']['default'] 46 | im = Image.new("L", LABEL_SIZE, 255) 47 | draw = ImageDraw.Draw(im) 48 | ## FIRST NAME 49 | #print("Placing first name") 50 | x_pos, y_pos = 0, 0 51 | font_path = resource_path(FONT_MEDIUM) 52 | ifs = int(35*FONT_SCALING) # initial font size 53 | font = fit_text(first, LABEL_SIZE[0], font_path, ifs) 54 | draw.text((x_pos, y_pos), first, font=font, fill=0) 55 | ## LAST NAME 56 | #print("Placing last name") 57 | y_pos += font.size * 1.3 58 | font_path = resource_path(FONT_REGULAR) 59 | ifs = int(20*FONT_SCALING) # initial font size 60 | font = fit_text(last, LABEL_SIZE[0], font_path, ifs, break_func=break_text_whitespace, max_lines=2) 61 | line_spacing = int(font.size * 1.15) 62 | for i, line in enumerate(break_text_whitespace(last, font, LABEL_SIZE[0])): 63 | draw.text((x_pos, y_pos+line_spacing*i), line, font=font) 64 | ## COMPANY NAME 65 | #print("Placing company name") 66 | y_pos = 450 67 | font_path = resource_path(FONT_MEDIUM) 68 | ifs = int(24*FONT_SCALING) # initial font size 69 | font = fit_text(company, LABEL_SIZE[0], font_path, ifs, break_func=break_text_whitespace, max_lines=2) 70 | line_spacing = int(font.size * 1.2) 71 | for i, line in enumerate(break_text_whitespace(company, font, LABEL_SIZE[0])): 72 | draw.text((x_pos, y_pos+line_spacing*i), line, font=font) 73 | ## Done, returning the Image instance 74 | return im 75 | 76 | def break_text_any(txt, font, max_width): 77 | """ 78 | break text at any character 79 | https://stackoverflow.com/a/43828315/183995 80 | """ 81 | 82 | # We share the subset to remember the last finest guess over 83 | # the text breakpoint and make it faster 84 | subset = len(txt) 85 | letter_size = None 86 | 87 | text_size = len(txt) 88 | while text_size > 0: 89 | 90 | subsets_tried = [] 91 | # Let's find the appropriate subset size 92 | while True: 93 | width, height = font.getsize(txt[:subset]) 94 | letter_size = width / subset 95 | 96 | # min/max(..., subset +/- 1) are to avoid looping infinitely over a wrong value 97 | if width < max_width - letter_size and text_size >= subset: # Too short 98 | subset = max(int(max_width * subset / width), subset + 1) 99 | elif width > max_width: # Too large 100 | subset = min(int(max_width * subset / width), subset - 1) 101 | else: # Subset fits, we exit 102 | break 103 | 104 | if subset in subsets_tried: 105 | break 106 | else: 107 | subsets_tried.append(subset) 108 | 109 | yield txt[:subset] 110 | txt = txt[subset:] 111 | text_size = len(txt) 112 | 113 | def break_text_whitespace(txt, font, max_width): 114 | """ 115 | break text at whitespace 116 | https://stackoverflow.com/a/43830313/183995 117 | """ 118 | 119 | line = "" 120 | width_of_line = 0 121 | # break string into multi-lines that fit max_width 122 | for token in txt.split(): 123 | token = token+' ' 124 | token_width = font.getsize(token)[0] 125 | if width_of_line + token_width < max_width: 126 | line += token 127 | width_of_line += token_width 128 | else: 129 | yield line 130 | width_of_line = 0 131 | line = "" 132 | line += token 133 | width_of_line += token_width 134 | if line: 135 | yield line 136 | 137 | def fit_text(txt, max_width, font_path, initial_font_size, max_lines=1, delta=-1, break_func=break_text_any): 138 | """ 139 | Tries to fit the given text in the given 140 | max_width with the given max_lines. 141 | Adjusts the font size until it fits. 142 | Returns the font with the adjusted size. 143 | """ 144 | font_size = initial_font_size 145 | font = ImageFont.truetype(font_path, font_size) 146 | while len(list(break_func(txt, font, max_width))) > max_lines: 147 | font_size += delta 148 | if font_size == 5: return font 149 | font = ImageFont.truetype(font_path, font_size) 150 | return font 151 | -------------------------------------------------------------------------------- /plugin_loader.py: -------------------------------------------------------------------------------- 1 | import imp 2 | import os 3 | 4 | MAIN_MODULE = "__init__" 5 | 6 | class PluginNotFoundError(NameError): 7 | pass 8 | 9 | def get_plugins(plugin_folder): 10 | plugins = [] 11 | possible_plugins = os.listdir(plugin_folder) 12 | for i in possible_plugins: 13 | location = os.path.join(plugin_folder, i) 14 | if os.path.isdir(location) and (MAIN_MODULE + ".py") in os.listdir(location): 15 | name = i 16 | info = imp.find_module(MAIN_MODULE, [location]) 17 | elif not os.path.isdir(location) and location.endswith(".py"): 18 | name = i.rpartition(".py")[0] 19 | info = imp.find_module(name, [plugin_folder]) 20 | else: 21 | continue 22 | plugins.append({"name": name, "info": info}) 23 | return plugins 24 | 25 | def get_plugin_by_name(plugin_name, plugin_folder): 26 | for plugin in get_plugins(plugin_folder): 27 | if plugin['name'] == plugin_name: 28 | return load_plugin(plugin) 29 | raise PluginNotFoundError() 30 | 31 | def load_plugin(plugin): 32 | try: 33 | return imp.load_module(plugin["name"], *plugin["info"]) 34 | finally: 35 | fp = plugin["info"][0] 36 | if fp: fp.close() 37 | -------------------------------------------------------------------------------- /requirements.bat: -------------------------------------------------------------------------------- 1 | pip install -r requirements.txt 2 | set /p=Hit [ENTER] to continue... 3 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | brother_ql==0.9.3 2 | bottle 3 | click 4 | pillow 5 | --------------------------------------------------------------------------------