Python 使用 PIL 在其中绘制一个矩形和一个文本
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Draw a rectangle and a text in it using PIL
提问by ako25
I want to draw a rectangle and a text in it, here's a part of my code and it's a bit obfuscated:
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，它有点模糊：
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")
This draws them both, but they're separate: the text is under the rectangle. Whereas I want a text to be drawn inside the rectangle. How can I do that? Should I necessarilycompose them or what?
这会同时绘制它们，但它们是分开的：文本位于矩形下方。而我想在矩形内绘制一个文本。我怎样才能做到这一点？我一定要创作它们还是什么？
回答by furas
You can do it without composite()
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")
You can create empty image with size of button and put text on it and later put this image on source_img. This way long text will be cut to size of button.
您可以创建具有按钮大小的空图像并在其上放置文本，然后将此图像放在source_img. 这样长文本将被剪切到按钮的大小。
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")
EDIT:I use ImageFont.getsize(text)to get text size and create button with correct size.
编辑：我ImageFont.getsize(text)用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")
