如何在标签上绘制图像 [英] How to draw images on labels

问题描述

我目前正在尝试在标签(pylabels库)上绘制二维码.我可以使用qrcode库创建二维码图像.但是，我对如何在标签上实际绘制图像有些迷惑.

I am currently trying to draw qr codes on my labels (pylabels library). I am able to create the qr code images using the qrcode library. However, I am a bit lost with how I actually draw the images on the labels.

我使用了 https://github上的示例代码.com/bcbnz/pylabels/blob/1.2.1/demos/basic.py

我尝试使用shapes提供的所有方法.绘图但没有成功.

I tried to use all the methods offered by shapes.Drawing but haven't had any success.

我浏览了reportlab文档，但并不太了解如何使它工作.

I went through the reportlab documentation but doesn't really understand how I get it to work.

def draw_label(label, width, height, obj):
    # Just convert the object to a string and print this at the bottom left of
    # the label.

    config = obj.get('config')

    label.add(shapes.String(2, 2, f'{config.get("code")}', fontName="Helvetica", fontSize=10))

    label.add(shapes.Drawing.drawOn(label, obj.get('image'), 100, 100))



def create_labels():
    specs = labels.Specification(210, 297, 4, 5, 45, 45, corner_radius=1)
    sheet = labels.Sheet(specs, draw_label, border=True)

    for num in range(10000, 10020):
        setup_dict = {
            'setup': 'setup-config',
            'code': num,
        }

        qr = qrcode.QRCode(
            version=1,
            error_correction=qrcode.constants.ERROR_CORRECT_H,
            box_size=15,
            border=5,
        )

        # Add JSON encoded data to qr code
        qr.add_data(json.dumps(setup_dict))
        qr.make(fit=True)

        qr_code = {
            'config': setup_dict,
            'image': qr.make_image(fill_color="black", back_color="white"),
        }

        sheet.add_label(qr_code)

        sheet.save('/qr_codes.pdf')

如果能给我一个例子，将不胜感激.

Would be very much appreciated, if anyone could give me an example.

推荐答案

我能够弄清楚.我很困惑，以至于看不到明显的东西.如果遇到相同的问题，下面是您所需要的.

I was able to figure it out. I was so confused, that I did not see the obvious. Below is what you need, if you run into the same issue.

from reportlab.graphics.shapes import Image

label.add(Image(25, 42, 80, 80, obj.get('image')))

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