Source for making labels for spice jars

ElementLabels.py

#!/usr/bin/env python3

import Quartz
from Quartz.CoreGraphics import *
import Cocoa

# element : [ element width, name width word 1, name width word 2 (or 0.0), name ]
labels = {
    "Cp" : [0.0, 0.0, 0.0, "Chili Powder"],
    "Bs" : [0.0, 0.0, 0.0, "Black Sesame"],
    "T"  : [0.0, 0.0, 0.0, "Tumeric"],
    "Cn" : [0.0, 0.0, 0.0, "Cinnamon"],
    "Gm" : [0.0, 0.0, 0.0, "Garam Masala"],
    "Ss" : [0.0, 0.0, 0.0, "Seasoned Salt"],
    "Cy" : [0.0, 0.0, 0.0, "Cayenne Pepper"],
}

def GetWidth(page, by, by_len):
    CGContextSetTextDrawingMode(page, kCGTextInvisible)
    CGContextSetTextPosition(page, 10.0, 10.0)
    CGContextShowText(page, by, by_len)
    pos = CGContextGetTextPosition(page)
    CGContextSetTextDrawingMode(page, kCGTextFill)
    return pos.x - 10.0

def MakeLabel(page, x, y, initials, words, size=60, initialsfontsize = 30, wordsfontsize=9):
    r = CGRectMake(x, y, size, size)
    CGContextSetLineWidth(page, 1.0)
    CGContextStrokeRect(page,r)

    #draw big "symbol"
    init_y = y + size / 2 - 2
    CGContextSelectFont(page, b"Helvetica", initialsfontsize, kCGEncodingMacRoman)
    w = words[0]
    init_x = x + size/2 - (w/2)
    CGContextSetTextPosition(page, init_x, init_y)
    by = initials.encode('utf-8')
    CGContextShowText(page, by, len(initials))
    
    #draw little "name"
    CGContextSelectFont(page, b"Helvetica", wordsfontsize, kCGEncodingMacRoman)

    init_y = y + size/4
    widx = 1
    for word in words[3].split(' '):
        w = words[widx]
        init_x = x + size/2 - (w/2)
        CGContextSetTextPosition(page, init_x, init_y)
        by = word.encode('utf-8')
        CGContextShowText(page, by, len(word))
        widx = widx+1
        init_y = init_y - (wordsfontsize + 2.0)
    

if __name__ == '__main__':
    initialsfontsize = 30
    wordsfontsize    = 9
    
    keys = list(labels.keys())
    keys.sort()
    
    #find out the widths the different labels
    url  = Cocoa.CFURLCreateWithFileSystemPath(None,"/tmp/labels.pdf",kCFURLPOSIXPathStyle,False)
    pr = CGRectMake(0,0,612,792)
    page = CGPDFContextCreateWithURL(url, pr, None)
    CGPDFContextBeginPage(page, None)
    
    CGContextSelectFont(page, b"Helvetica", initialsfontsize, kCGEncodingMacRoman)
    for k in keys:
        by = k.encode('utf-8')
        elemwidth = GetWidth(page, by, len(k))
        labels[k][0] = elemwidth
        
    CGContextSelectFont(page, b"Helvetica", wordsfontsize, kCGEncodingMacRoman)
    for k in keys:
        words = labels[k][3].split(' ')
        w = 1 #index of 
        for word in words:
            by = word.encode('utf-8')
            elemwidth = GetWidth(page, by, len(word))
            labels[k][w] = elemwidth
            w = w + 1
    
    CGPDFContextEndPage(page)
    CGPDFContextClose(page)
        
    url  = Cocoa.CFURLCreateWithFileSystemPath(None,"/tmp/labels.pdf",kCFURLPOSIXPathStyle,False)
    pr = CGRectMake(0,0,612,792)
    page = CGPDFContextCreateWithURL(url, pr, None)
    CGPDFContextBeginPage(page, None)
    
    CGContextStrokeRect(page,pr)
    for yyy in range(0, 7):
        initials  = keys[yyy]
        words     = labels[initials]
        for xxx in range(0, 7):
            x = xxx * 80 + 20
            y = yyy * 80 + 20
            MakeLabel(page, x, y, initials, words, initialsfontsize=initialsfontsize, wordsfontsize=wordsfontsize)
    
    CGPDFContextEndPage(page)
    CGPDFContextClose(page)