PangoCairo Draw Text

pangocairodrawtext.ipynb

z.py

from scipy.misc import imread

import cairo

import pygtk
pygtk.require('2.0')
import pango
import pangocairo

arabic_indic_trans = dict(
    zip((ord(s) for s in u'0123456789'),
        u'\u0660\u0661\u0662\u0663\u0664\u0665\u0666\u0667\u0668\u0669')
)

for i in range(1, 32):
    # https://www.cairographics.org/cookbook/pycairo_pango/
    surf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 64, 64)
    context = cairo.Context(surf)
    
    context.rectangle(0, 0, 64, 64)
    context.set_source_rgba(255, 255, 255, 0)
    context.fill()

    pangocairo_context = pangocairo.CairoContext(context)
    pangocairo_context.set_antialias(cairo.ANTIALIAS_SUBPIXEL)

    layout = pangocairo_context.create_layout()
    font = pango.FontDescription('68')
    font.set_family('Noto Naskh Arabic')

    layout.set_font_description(font)

    layout.set_text(unicode(i).translate(arabic_indic_trans))

    w, h = layout.get_size()
    w /= pango.SCALE
    h /= pango.SCALE
    context.translate((64 - w) / 2, (76 - h) / 2 - 2)

    context.set_source_rgb(255, 255, 255)
    pangocairo_context.update_layout(layout)
    pangocairo_context.show_layout(layout)

    surf.write_to_png('day%d_.png' % (i))
    
    #if i % 16 == 0:
    #    plt.figure()
    #    plt.imshow(imread('day%d_ar.png' % (i)))