#!/usr/bin/python
# -*- coding: utf-8 -*-
"""Hello-world generating internal and external links in a PDF in Reportlab.

This goes a bit beyond "hello world" I guess, in that it explores different
options for bookmark types and link formatting.
"""
from reportlab.pdfgen.canvas import Canvas
from reportlab.lib.colors import toColor


def main():
    x1, y1, x2, y2 = (72, 36, 144, 108)

    c = Canvas('hilinks.pdf', pagesize=(72*3, 72*2))

    c.bookmarkPage('hellopage')
    c.drawCentredString(72*1.5, 66, "hello")
    c.addOutlineEntry('greetings', 'hellopage', closed=True)
    # Without a unique bookmark for each outline entry, the names for
    # earlier outline entries get lost, so we create a second bookmark:
    c.bookmarkPage('hellopage2')
    c.addOutlineEntry('(hi)', 'hellopage2', level=1)
    # c.linkAbsolute also exists, using absolute coordinates rather
    # than transformed coordinates; since we haven't changed our
    # coordinate system these are equivalent.
    # Though other viewers ignore it, pdf.js displays the first
    # argument in a popup.
    c.linkRect('some contents', 'goodbyepage', (x1, y1, x2, y2))
    c.showPage()

    c.bookmarkPage('goodbyepage', fit='XYZ')  # default `fit` is full page zoom
    c.drawCentredString(72*1.5, 66, "goodbye")
    # `thickness` makes the link box visible, but it doesn't print.  Default
    # is invisible.
    c.linkRect('what are these', 'hellopage', (x1, y1, x2, y2), thickness=0.2)
    c.addOutlineEntry('(bye)', 'goodbyepage', level=1)
    c.showPage()

    c.bookmarkPage('neither')
    c.drawCentredString(72*1.5, 66, 'neither hai nor bai')
    c.linkURL('http://canonical.org/', (x1-36, y1, x2+36, y2), thickness=0.1,
              color=toColor('#9999ff'))  # toColor fails with three-digit #99f
    c.addOutlineEntry('(neither)', 'neither')
    c.showPage()

    c.save()

if __name__ == '__main__':
    main()