#!/usr/bin/python
# -*- coding: utf-8 -*-
"""Hello-world using ReportLab textobject for greedy word wrapping.

I guess this is a little more than a hello-world; see reportlabhello.py.
"""
import random

from reportlab.pdfgen.canvas import Canvas
from reportlab.lib.pagesizes import A4


words = ['hello, ', 'world.  ', 'hi, ', 'hi there, ', 'furled.  ']

def start_page(c):
    c.setFont('Times-Roman', 12)          # PostScript points
    return c.beginText(36, A4[1]-36)      # PostScript points

def main():
    choose = random.Random(9).choice
    c = Canvas('hellotext.pdf', invariant=True)
    t = start_page(c)
    right_margin = A4[0]-36               # PostScript points
    capitalizing = True

    for i in range(1000):
        word = choose(words)
        if capitalizing:
            word = word.capitalize()

        width = c.stringWidth(word)
        if t.getX() + width > right_margin:
            t.textLine()
            if t.getY() < 36:
                c.drawText(t)
                c.showPage()
                t = start_page(c)

        t.textOut(word)
        capitalizing = word.endswith('.  ')

    c.drawText(t)
    c.save()

if __name__ == '__main__':
    main()