#!/usr/bin/env python
# Generate a PDF page of business cards.
# Adam Sampson <ats@offog.org>

from reportlab.lib.pagesizes import A4
from reportlab.lib.units import mm
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont
from reportlab.pdfgen import canvas

pdfmetrics.registerFont(TTFont("GentiumBasic", "/opt/share/fonts/gentiumbasic/GenBkBasR.ttf"))
pdfmetrics.registerFont(TTFont("GentiumBasic-Bold", "/opt/share/fonts/gentiumbasic/GenBkBasB.ttf"))

# UK standard business cards are ISO 8710 ID-1.
card_size = (85.60 * mm, 53.98 * mm)

# A8 is an alternative.
#card_size = (74 * mm, 52 * mm)

page_size = A4
tick_len = 3 * mm

def draw_card(c):
	"""Draw a single card at (0, 0)."""

	w, h = card_size

	c.setFont("GentiumBasic-Bold", 20)
	c.drawCentredString(w / 2, h * .75, "Adam Sampson")

	c.setFont("GentiumBasic", 16)
	c.drawCentredString(w / 2, h * .45, "ats@offog.org")
	c.drawCentredString(w / 2, h * .30, "http://offog.org/")
	c.drawCentredString(w / 2, h * .15, "+44 (0)7930 250969")

def main():
	c = canvas.Canvas("businesscard.pdf", pagesize = page_size)

	# How many cards can we fit on the page?
	w_cards = int((page_size[0] - (2 * tick_len)) / card_size[0])
	h_cards = int((page_size[1] - (2 * tick_len)) / card_size[1])

	margin = ((page_size[0] - (w_cards * card_size[0])) / 2,
	          (page_size[1] - (h_cards * card_size[1])) / 2)

	for x in range(w_cards):
		for y in range(h_cards):
			c.saveState()

			c.translate(margin[0] + (x * card_size[0]),
			            margin[1] + (y * card_size[1]))
			draw_card(c)

			c.restoreState()

	def draw_tick(x, y):
		c.line(x - tick_len, y, x + tick_len, y)
		c.line(x, y - tick_len, x, y + tick_len)

	for x in range(w_cards + 1):
		for y in range(h_cards + 1):
			draw_tick(margin[0] + (x * card_size[0]),
			          margin[1] + (y * card_size[1]))

	c.showPage()
	c.save()

if __name__ == "__main__":
	main()