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Dejvino
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README.md
18
README.md
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# pos-printer-server
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ESC/POS Thermal Printer Server
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ESC/POS Thermal Printer Server
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Prints logs.
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Prints images, randomly-generated mazes.
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## Install
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```
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pip install -r requirements.txt
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```
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## Resources
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- [escposprinter Python library](https://github.com/Simonefardella/escposprinter)
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- [RPi Maze Printer](https://github.com/mattiasjahnke/rpi-maze-printer)
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21
maze/LICENSE
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maze/LICENSE
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MIT License
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Copyright (c) 2018 Engineerish
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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145
maze/mazy.py
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145
maze/mazy.py
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#!/usr/bin/python
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# import modules used here -- sys is a very standard one
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import sys
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from PIL import Image, ImageDraw
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import math
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import random
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class Cell:
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walls = int('1111', 2)
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visited = False
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def __init__(self, x, y):
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self.x = x
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self.y = y
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def draw(self, draw):
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global start, end, margin
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if self.walls & 1 == 1:
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draw.line([(margin + cellSize * self.x, margin + cellSize * self.y + cellSize), (margin + cellSize * self.x + cellSize, margin + cellSize * self.y + cellSize)], fill="black", width=3)
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if (self.walls >> 1 & 1) == 1:
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draw.line([(margin + cellSize * self.x + cellSize, margin + cellSize * self.y), (margin + cellSize * self.x + cellSize, margin + cellSize * self.y + cellSize)], fill="black", width=3)
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if (self.walls >> 2 & 1) == 1:
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draw.line([(margin + cellSize * self.x, margin + cellSize * self.y), (margin + cellSize * self.x + cellSize, margin + cellSize * self.y)], fill="black", width=3)
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if (self.walls >> 3 & 1) == 1:
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draw.line([(margin + cellSize * self.x, margin + cellSize * self.y), (margin + cellSize * self.x, margin + cellSize * self.y + cellSize)], fill="black", width=3)
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if self.x == start[0] and self.y == start[1]:
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draw.ellipse([margin + cellSize * self.x + cellSize / 4, margin + cellSize * self.y + cellSize / 4, margin + cellSize * self.x + cellSize / 4 + cellSize / 2, margin + cellSize * self.y + cellSize / 4 + cellSize / 2], fill="blue")
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elif self.x == end[0] and self.y == end[1]:
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draw.ellipse([margin + cellSize * self.x + cellSize / 4, margin + cellSize * self.y + cellSize / 4, margin + cellSize * self.x + cellSize / 4 + cellSize / 2, margin + cellSize * self.y + cellSize / 4 + cellSize / 2], fill="green")
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rows = 0
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cols = 0
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#image = Image.new('RGB', (380, 400 * 2), (0, 0, 0))
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image = Image.new('RGB', (500, 400 * 4), (0, 0, 0))
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draw = ImageDraw.Draw(image)
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cellSize = 20
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margin = 10
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matrix = []
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stack = []
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currentCell = None
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biggestStack = 0
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start = (0, 0)
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end = (0, 0)
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# Gather our code in a main() function
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def main():
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global matrix, stack, currentCell, start, rows, cols, cellSize, margin
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# Setup
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if len(sys.argv) > 1:
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cellSize = int(sys.argv[1])
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random.seed()
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drawingWidth = image.width - margin * 2
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drawingHeight = image.height - margin * 2
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draw.rectangle([margin, margin, margin + drawingWidth, margin + drawingHeight], fill="white")
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rows = int(math.floor(drawingHeight / cellSize))
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cols = int(math.floor(drawingWidth / cellSize))
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print(cellSize)
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for y in range(rows):
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for x in range(cols):
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matrix.append(Cell(x, y))
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currentCell = matrix[0]
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start = (currentCell.x, currentCell.y)
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while nrOfUnvisitedCells() > 0:
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runMazeStep()
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# Draw
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for cell in matrix:
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cell.draw(draw)
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image.save("maze.png")
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def runMazeStep():
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global currentCell, stack, end, biggestStack
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currentCell.visited = True
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nei = []
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if currentCell.x > 0:
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cell = matrix[index(currentCell.x - 1, currentCell.y)]
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if not cell.visited:
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nei.append(cell)
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if currentCell.y > 0:
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cell = matrix[index(currentCell.x, currentCell.y - 1)]
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if not cell.visited:
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nei.append(cell)
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if currentCell.x < cols - 1:
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cell = matrix[index(currentCell.x + 1, currentCell.y)]
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if not cell.visited:
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nei.append(cell)
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if currentCell.y < rows - 1:
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cell = matrix[index(currentCell.x, currentCell.y + 1)]
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if not cell.visited:
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nei.append(cell)
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if len(nei) > 0:
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chosen = random.choice(nei)
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stack.append(currentCell)
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if len(stack) > biggestStack:
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biggestStack = len(stack)
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end = (chosen.x, chosen.y)
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if chosen.x < currentCell.x:
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chosen.walls &= ~(1 << 1)
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currentCell.walls &= ~(1 << 3)
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elif chosen.x > currentCell.x:
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chosen.walls &= ~(1 << 3)
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currentCell.walls &= ~(1 << 1)
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elif chosen.y > currentCell.y:
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chosen.walls &= ~(1 << 2)
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currentCell.walls &= ~(1 << 0)
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elif chosen.y < currentCell.y:
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chosen.walls &= ~(1 << 0)
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currentCell.walls &= ~(1 << 2)
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currentCell = chosen
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else:
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currentCell = stack.pop()
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def nrOfUnvisitedCells():
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global matrix
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res = len([cell for cell in matrix if not cell.visited])
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return res
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def index(x, y):
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global cols
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return y * cols + x
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# Standard boilerplate to call the main() function to begin
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# the program.
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if __name__ == '__main__':
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main()
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86
print_log.py
Executable file
86
print_log.py
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#!/bin/env python3
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from escpos.printer import Usb
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import getopt
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import sys
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import datetime
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TEXT_LIMIT=256
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class PrintOptions:
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title = None
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text = None
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verbose = False
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image = None
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def get_printer():
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return Usb(0x0525, 0xa700) # <-- change based on your printer vendor and product ID
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def do_print(options):
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p = get_printer()
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p.set(align='center')
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p.text(str(datetime.datetime.now().strftime("%H:%M:%S")))
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p.text(' ')
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p.text(str(datetime.date.today()))
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p.text('\n')
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if (options.title):
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p.set(align='center', text_type='B') # center bold
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p.text(options.title + '\n')
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p.set()
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if len(options.text) > TEXT_LIMIT:
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p.text(options.text[:TEXT_LIMIT] + '[...]\n(truncated)')
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else:
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p.text(options.text + '\n')
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if options.image != None:
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p.image(options.image)
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p.cut()
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def do_print_image(path):
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p = get_printer()
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p.image(path)
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p.cut()
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def usage():
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print(f'usage: {sys.argv[0]} [OPTIONS] TEXT...')
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print(f' OPTIONS')
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print(f' -v ... verbose')
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print(f' -h ... help')
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print(f' -t --title=X ... title to prepend')
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print(f' -i --image=X ... image path')
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print(f' TEXT is taken as the rest of argumenats if present,')
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print(f' otherwise from STDIN (terminated by Ctrl+D).')
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def main():
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try:
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opts, args = getopt.getopt(sys.argv[1:], "ht:i:v", ["help", "title=", "image="])
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except getopt.GetoptError as err:
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print(err)
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usage()
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sys.exit(2)
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title = None
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verbose = False
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image = None
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for o, a in opts:
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if o == "-v":
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verbose = True
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elif o in ("-h", "--help"):
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usage()
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sys.exit()
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elif o in ("-i", "--image"):
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image = a
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elif o in ("-t", "--title"):
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title = a
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else:
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assert False, "unhandled option"
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options = PrintOptions()
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options.title = title
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options.verbose = verbose
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options.text = " ".join(args)
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options.image = image
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if len(options.text) <= 0:
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for line in sys.stdin:
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options.text = options.text + line
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do_print(options)
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if __name__ == "__main__":
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main()
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1
requirements.txt
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1
requirements.txt
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python_escpos
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