printImage.py

#!/usr/bin/python
#
# Sudoku Generator and Solver in 250 lines of python
# Copyright (c) 2006 David Bau.  All rights reserved.
#
# Can be used as either a command-line tool or as a cgi script.
#
# As a cgi-script, generates puzzles and estimates their level of
# difficulty.  Uses files sudoku-template.pdf/.ps/.txt/.html
# in which it can fill in 81 underscores with digits for a puzzle.
# The suffix of the request URL determines which template is used.
#
# On a command line without any arguments, prints text for a
# random sudoku puzzle, with an estimate of its difficulty.
# On a command line with a filename, solves the given puzzles
# (files should look like the text generated by the generator).
#
# Adapted for Adafruit_Thermal library by Phil Burgess for Adafruit
# Industries.  This version uses bitmaps (in the 'gfx' subdirectory)
# to render the puzzle rather than text symbols.  See sudoku-txt
# for a different Sudoku example that's all text-based.

from __future__ import print_function
import sys, os, random, getopt, re
from Adafruit_Thermal import *
from PIL import Image
from PrinterProject_book_recommend import gray_Scale

def printImage(nameImg):
    printer = Adafruit_Thermal("/dev/serial0", 19200, timeout=5)
    basewidth = 400
    img = Image.open('ThermalVis/images/'+nameImg+'.png')
    wpercent = (basewidth/float(img.size[0]))
    hsize = int((float(img.size[1])*float(wpercent)))
    #bg      = Image.new("1", [282 , 271], "white") # Working 'background' image
    bg      = Image.new("1", [basewidth , hsize], "white") # Working 'background' image
    img = img.resize((basewidth,hsize), Image.ANTIALIAS)
    img.save('ThermalVis/images/'+nameImg+'.png')
    imgGray = gray_Scale("ThermalVis/images/"+nameImg+".png")
    imgGray = Image.open(imgGray)
  # Crop number bitmaps out of source image
    printer.printImage(imgGray, True) # This does the printing
    printer.println()
    printer.feed(3)