def get_pilimage(self, bar_width):
def sum_len(total, item):
"""add the length of a given item to the total"""
return total + len(item)
num_bars = (7 * 12) + reduce(sum_len, self.guards, 0)
quiet_width = bar_width * 9
image_width = (2 * quiet_width) + (num_bars * bar_width)
image_height = image_width // 2
img = Image.new('L', (image_width, image_height), 255)
class BarWriter:
"""Class which moves across the image, writing out bars"""
def __init__(self, img):
self.img = img
self.current_x = quiet_width
self.symbol_top = quiet_width // 2
def write_bar(self, value, full=False):
"""Draw a bar at the current position,
if the value is 1, otherwise move on silently"""
# only write anything to the image if bar value is 1
bar_height = int(image_height * (full and 0.9 or 0.8))
if value == 1:
for ypos in range(self.symbol_top, bar_height):
for xpos in range(self.current_x,
self.current_x + bar_width):
img.putpixel((xpos, ypos), 0)
self.current_x += bar_width
def write_bars(self, bars, full=False):
"""write all bars to the image"""
for bar in bars:
self.write_bar(int(bar), full)
# Draw the bars
writer = BarWriter(img)
writer.write_bars(self.guards[0], full=True)
writer.write_bars(self.left_bars)
writer.write_bars(self.guards[1], full=True)
writer.write_bars(self.right_bars)
writer.write_bars(self.guards[2], full=True)
# Draw the text
font_size = font_sizes.get(bar_width, 24)
font = get_font("courR", font_size)
draw = ImageDraw.Draw(img)
draw.text((1 * bar_width, int(image_height * 0.7)),
self.code[0], font=font)
draw.text((16 * bar_width, int(image_height * 0.8)),
self.code[1:7], font=font)
draw.text((63 * bar_width, int(image_height * 0.8)), self.code[7:], font=font)
self.width = image_width
self.height = image_height
return img
def get_pilimage(self, bar_width):
"""Return the barcode as a PIL object"""
show_label = self.options.get('show_label', True)
# 11 bars per character, plus the stop
num_bars = len(self.bars)
log.debug("There are %d bars", num_bars)
# Quiet zone is 10 bar widths on each side
quiet_width = bar_width * 10
fontsize = 0
if show_label:
default_fontsize = FONT_SIZES.get(bar_width, 24)
fontsize = self.options.get('ttf_fontsize', default_fontsize)
ttf_font = self.options.get('ttf_font')
if ttf_font:
font = ImageFont.truetype(ttf_font, fontsize)
else:
font = get_font("courR", fontsize)
# Total image width
self.image_width = (2 * quiet_width) + (num_bars * bar_width)
# Image height
label_border = self.options.get('label_border', 0)
self.image_height = self.options.get('height') or 120
bar_height = self.image_height - label_border - fontsize
# Image: has a white background
bottom_border = self.options.get('bottom_border', 0)
img = Image.new('L',
(self.image_width, self.image_height + bottom_border),
255)
class BarWriter:
"""Class which moves across the image, writing out bars"""
def __init__(self, img, bar_height):
self.img = img
self.current_x = quiet_width
if show_label:
self.symbol_top = quiet_width // 2
else:
self.symbol_top = 0
self.bar_height = bar_height
def write_bar(self, value):
"""Draw a bar at the current position,
if the value is 1, otherwise move on silently"""
# only write anything to the image if bar value is 1
if value == 1:
for ypos in range(self.symbol_top, self.bar_height):
for xpos in range(self.current_x,
self.current_x + bar_width):
img.putpixel((xpos, ypos), 0)
self.current_x += bar_width
def write_bars(self, bars):
"""write all bars to the image"""
for bar in bars:
self.write_bar(int(bar))
# draw the barcode bars themselves
writer = BarWriter(img, bar_height)
writer.write_bars(self.bars)
# Draw the text
draw = ImageDraw.Draw(img)
if show_label:
xtextwidth = font.getsize(self.text)[0]
xtextpos = self.image_width / 2 - (xtextwidth / 2)
ytextpos = bar_height + label_border
draw.text((xtextpos, ytextpos), self.text, font=font)
return img
def get_pilimage(self, bar_width):
"""Return the barcode as a PIL object"""
show_label = self.options.get('show_label', True)
quiet_width_muliplier = self.options.get('quiet_width_multiplier', 10)
# 11 bars per character, plus the stop
num_bars = len(self.bars)
log.debug("There are %d bars", num_bars)
# Quiet zone is 10 bar widths on each side
quiet_width = bar_width * quiet_width_muliplier
fontsize = 0
if show_label:
default_fontsize = FONT_SIZES.get(bar_width, 24)
fontsize = self.options.get('ttf_fontsize', default_fontsize)
ttf_font = self.options.get('ttf_font')
if ttf_font:
font = ImageFont.truetype(ttf_font, fontsize)
else:
font = get_font("courR", fontsize)
# Total image width
self.image_width = (2 * quiet_width) + (num_bars * bar_width)
# Image height 30% of width
label_border = self.options.get('label_border', 0)
self.image_height = self.options.get('height') or (self.image_width // 3)
bar_height = self.image_height - label_border - fontsize
# Image: has a white background
bottom_border = self.options.get('bottom_border', 0)
img = Image.new('L', (
self.image_width, self.image_height + bottom_border), 255)
class BarWriter:
"""Class which moves across the image, writing out bars"""
def __init__(self, img, bar_height):
self.img = img
self.current_x = quiet_width
if show_label:
self.symbol_top = quiet_width // 2
else:
self.symbol_top = 0
self.bar_height = bar_height
def write_bar(self, value):
"""Draw a bar at the current position,
if the value is 1, otherwise move on silently"""
# only write anything to the image if bar value is 1
if value == 1:
for ypos in range(self.symbol_top, self.bar_height):
for xpos in range(self.current_x,
self.current_x + bar_width):
img.putpixel((xpos, ypos), 0)
self.current_x += bar_width
def write_bars(self, bars):
"""write all bars to the image"""
for bar in bars:
self.write_bar(int(bar))
# draw the barcode bars themselves
writer = BarWriter(img, bar_height)
writer.write_bars(self.bars)
# Draw the text
draw = ImageDraw.Draw(img)
if show_label:
xtextwidth = font.getsize(self.text)[0]
xtextpos = self.image_width / 2 - (xtextwidth / 2)
ytextpos = bar_height + label_border
draw.text((xtextpos, ytextpos), self.text, font=font)
return img
