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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------------
#
# FreeType high-level python API - Copyright 2011 Nicolas P. Rougier
# Distributed under the terms of the new BSD license.
#
# -----------------------------------------------------------------------------
from freetype import *
if __name__ == '__main__':
import numpy
import matplotlib.pyplot as plt
face = Face('./Vera.ttf')
text = 'Hello World !'
face.set_char_size( 48*64 )
slot = face.glyph
# First pass to compute bbox
width, height, baseline = 0, 0, 0
previous = 0
for i,c in enumerate(text):
face.load_char(c)
bitmap = slot.bitmap
height = max(height,
bitmap.rows + max(0,-(slot.bitmap_top-bitmap.rows)))
baseline = max(baseline, max(0,-(slot.bitmap_top-bitmap.rows)))
kerning = face.get_kerning(previous, c)
width += (slot.advance.x >> 6) + (kerning.x >> 6)
previous = c
Z = numpy.zeros((height,width), dtype=numpy.ubyte)
# Second pass for actual rendering
x, y = 0, 0
previous = 0
for c in text:
face.load_char(c)
bitmap = slot.bitmap
top = slot.bitmap_top
left = slot.bitmap_left
w,h = bitmap.width, bitmap.rows
y = height-baseline-top
kerning = face.get_kerning(previous, c)
x += (kerning.x >> 6)
Z[y:y+h,x:x+w] += numpy.array(bitmap.buffer).reshape(h,w)
x += (slot.advance.x >> 6)
previous = c
plt.figure(figsize=(10, 10*Z.shape[0]/float(Z.shape[1])))
plt.imshow(Z, interpolation='nearest', origin='upper', cmap=plt.cm.gray)
plt.xticks([]), plt.yticks([])
plt.show()
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