#! /usr/bin/env python
import sys
import math
import pango
import cairo
import pangocairo

WIDTH = 400
HEIGHT = 300

def draw_text(cr):
    cr.translate(100, 100)

    # Create a PangoLayout, set the font and text */
    layout = cr.create_layout()
    layout.set_font_description(pango.FontDescription("FreeSerif 100"))
    layout.set_text(u"\N{LEFT SQUARE BRACKET EXTENSION}".encode("utf-8"))
    width, height = layout.get_pixel_size()
    print width, height
    cr.rectangle(0, 0, width, height)
    cr.set_source_rgb(1, .5, .5)
    cr.set_line_width(1)
    cr.stroke()
    cr.move_to(0, 0)
    cr.set_source_rgb(0, 0, 0)
    cr.show_layout(layout)

def main(argv):
    if len(argv) != 2:
        print >> sys.stderr, "Usage: cairosimple OUTPUT_BASENAME\n"
        return 1

    filename = argv[1]
    surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)
    cr = pangocairo.CairoContext(cairo.Context(surface))
    cr.set_source_rgb(1.0, 1.0, 1.0)
    cr.rectangle(0, 0, WIDTH, HEIGHT)
    cr.fill()
    draw_text(cr)

    surface.write_to_png(filename + ".png")

    ## output also a PDF file
    surface = cairo.PDFSurface(filename + ".pdf", WIDTH, HEIGHT)
    cr = pangocairo.CairoContext(cairo.Context(surface))
    draw_text(cr)
    cr.show_page()
    surface.finish()
    

if __name__ == '__main__':
    sys.exit(main(sys.argv))