def render_pass(self, text, known_width):
# 1st pass - calculate width requirment - return width integer
# 2nd pass - render result image itself
if known_width:
height = self.map2glyph.map.values()[0].get_height() # get any glyph to calculate image's height
result_image = Image.new("RGB", (known_width,height), COLOR_WHITE)
result_image.source ="font-render-image"
else:
result_image = None
def_glyph = self.map2glyph.get('?')
print "default glyph: %s" % def_glyph
left = 0
for char in text:
glyph = self.find_glyph(char, def_glyph)
if glyph:
blind_left, blind_right = glyph.get_blind_pixels_info()
if blind_left or blind_right:
print "blind pixels detected: %s %s" % (blind_left, blind_right)
if result_image:
result_image.paste(glyph.image, (left,0))
left += glyph.get_width()
left += self.char_gap
if HINT_CHARS_OPEN_RIGHT.find(char.lower()) >= 0:
left -= 1
#left -= blind_left + blind_right
#left += int(11.00000)
return result_image if result_image else left
def __init__(self, char_gap, space_width):
self.char_gap = char_gap
self.map2glyph = GlyphMap()
space_glyph = Glyph(Image.new("RGB", (space_width,1), COLOR_WHITE))
space_glyph.image.source = "space-image"
self.map2glyph.set(' ', space_glyph)
