使用PIL在其中绘制矩形和文本- AskGo

使用PIL在其中绘制矩形和文本

image-processing

python

python-3.x

python-imaging-library

我想在其中绘制一个矩形和一个文本，这是我的代码的一部分，有点混淆：

from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw
from PIL import ImageEnhance

  source_img = Image.open(file_name).convert("RGB")

  img1 = Image.new("RGBA", img.size, (0,0,0,0))
  draw1 = ImageDraw.Draw(watermark, "RGBA")
  draw1.rectangle(((0, 00), (100, 100)), fill="black")
  img_rectangle = Image.composite(img1, source_img, img1)

  draw2 = ImageDraw.Draw(img1, "RGBA")
  draw2.text((20, 70), "something123", font=ImageFont.truetype("font_path123"))

  Image.composite(img1, source_img, img1).save(out_file, "JPEG")

这会同时绘制它们，但它们是分开的：文本在矩形下方。而我希望在矩形内绘制文本。我怎样才能做到这一点？如果我一定撰写他们还是什么？

参考资料：

Stack Overflow

2020-05-29 21:14:00 更新

Tim Black• 692

共 1 个回答

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您可以不使用composite()

from PIL import Image, ImageFont, ImageDraw, ImageEnhance

source_img = Image.open(file_name).convert("RGBA")

draw = ImageDraw.Draw(source_img)
draw.rectangle(((0, 00), (100, 100)), fill="black")
draw.text((20, 70), "something123", font=ImageFont.truetype("font_path123"))

source_img.save(out_file, "JPEG")

您可以创建具有按钮大小的空图像，并在其上放置文本，然后将该图像放置在source_img 。这样，长文本将被剪切为按钮的大小。

from PIL import Image, ImageFont, ImageDraw, ImageEnhance

source_img = Image.open("source.jpg").convert("RGBA")

# create image with size (100,100) and black background
button_img = Image.new('RGBA', (100,100), "black")

# put text on image
button_draw = ImageDraw.Draw(button_img)
button_draw.text((20, 70), "very loooooooooooooooooong text", font=ImageFont.truetype("arial"))

# put button on source image in position (0, 0)
source_img.paste(button_img, (0, 0))

# save in new file
source_img.save("output.jpg", "JPEG")

编辑：我使用ImageFont.getsize(text)来获取文本大小并创建具有正确大小的按钮。

from PIL import Image, ImageFont, ImageDraw, ImageEnhance

source_img = Image.open("input.jpg").convert("RGBA")


font = ImageFont.truetype("arial")

text = "very loooooooooooooooooong text"

# get text size
text_size = font.getsize(text)

# set button size + 10px margins
button_size = (text_size[0]+20, text_size[1]+20)

# create image with correct size and black background
button_img = Image.new('RGBA', button_size, "black")

# put text on button with 10px margins
button_draw = ImageDraw.Draw(button_img)
button_draw.text((10, 10), text, font=font)

# put button on source image in position (0, 0)
source_img.paste(button_img, (0, 0))

# save in new file
source_img.save("output.jpg", "JPEG")

2020-05-29 21:14:23 更新