使用reportlab将图像添加到标签

Question

通过文档很难弄清楚这一点。我想创建带有条形码的标签。我已经将条形码创建为图像（“png”）。我想通过 reportlab 将这些图像插入到我的标签中，但不知道如何操作。

这是我的代码：

import labels
from reportlab.graphics import shapes

# PAPER DIMENSIONS
PADDING = 1
specs = labels.Specification(
    215.9, 279.4, 3, 10, 64, 25.4, corner_radius=2,
    left_margin=5, right_margin=5, top_margin=13,
    left_padding=PADDING, right_padding=PADDING, top_padding=PADDING,
    bottom_padding=PADDING,
    row_gap=0)


# MAKE LABELS
def draw_label(label, width, height, obj):
    # Just convert the object to a string and print this at the bottom left of
    # the label.
    label.add(shapes.String(width / 4, height / 2, str(obj), fontName="Helvetica", fontSize=20))

# CREATE SHEET
sheet = labels.Sheet(specs, draw_label, border=True)

# THIS IS WHERE THE BARCODE IMAGES WOULD GO. CURRENTLY REPRESENTED AS TYPE STRING
sheet.add_label("Barcode 1")
sheet.add_label("Barcode 2")
sheet.add_label("Barcode 3")

# SAVE FILE
sheet.save('labels.pdf')
print("{0:d} label(s) output on {1:d} page(s).".format(sheet.label_count, sheet.page_count))

Answer 1

最终只是通过reportlab 使用它创建条形码。仍然不知道如何插入图像并将其适合特定尺寸。

无论如何，以下是如何创建符合 Avery 5160 标签规格的条形码

import labels
from reportlab.graphics import shapes
from reportlab.graphics.barcode import createBarcodeDrawing

PADDING = 1
specs = labels.Specification(
    215.9, 279.4, 3, 10, 64, 25.4, corner_radius=2,
    left_margin=5, right_margin=5, top_margin=13,
    left_padding=5.5, right_padding=PADDING, top_padding=PADDING,
    bottom_padding=9,
    row_gap=0)

def draw_label(label, width, height, obj):
    (labelstr, barcodestr) = obj
    label.add(shapes.String(width / 4, height / 2, labelstr, fontName="Helvetica", fontSize=20))
    label.add(createBarcodeDrawing('Code128', value=barcodestr, width=150, height=20))


# Create the sheet.
sheet = labels.Sheet(specs, draw_label, border=True)

# Add a couple of labels.
sheet.add_label(('label1', 'BARONE',))
sheet.add_label(('label2', 'BARTWO',))


# Save the file and we are done.
sheet.save('labels.pdf')
print("{0:d} label(s) output on {1:d} page(s).".format(sheet.label_count, sheet.page_count))

Answer 2

正是我要找的，谢谢