使用PIL绘制矩形和其中的文本

Question

我想画一个矩形和一个文本，这是我代码的一部分，有点模糊：

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：文本在矩形下面。而我希望在矩形内绘制一个文本。 我该怎么做？我应该把它们组合起来吗？

Answer 1

你可以不用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")

---

您可以创建按钮大小为的空图像并在其上放置文本，然后将此图像放在source_img上。这样长文本将被剪切为按钮大小。

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)获取文本大小并创建大小正确的按钮。

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")