Python 如何在不指定绝对路径的情况下使用 PIL.ImageFont.truetype 加载字体文件？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/24085996/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How I can load a font file with PIL.ImageFont.truetype without specifying the absolute path?
提问by NeoWang
When I write the code in Windows, this code can load the font file just fine:
当我在 Windows 中编写代码时，这段代码可以很好地加载字体文件：
ImageFont.truetype(filename='msyhbd.ttf', size=30);
I guess the font location is registered in Windows registry. But when I move the code to Ubuntu, and copy the font file over to /usr/share/fonts/, the code cannot locate the font:
我猜字体位置是在 Windows 注册表中注册的。但是当我将代码移动到 Ubuntu，并将字体文件复制到 /usr/share/fonts/ 时，代码找不到字体：
self.font = core.getfont(font, size, index, encoding)
IOError: cannot open resource
How can I get PIL to find the ttf file without specifying the absolute path?
如何在不指定绝对路径的情况下让 PIL 找到 ttf 文件？
采纳答案by Hugo
According to the PIL documentation, only Windows font directory is searched:
根据 PIL 文档，只搜索 Windows 字体目录：
On Windows, if the given file name does not exist, the loader also looks in Windows fonts directory.
在 Windows 上，如果给定的文件名不存在，加载程序也会在 Windows 字体目录中查找。
http://effbot.org/imagingbook/imagefont.htm
http://effbot.org/imagingbook/imagefont.htm
So you need to write your own code to search for the full path on Linux.
所以需要自己写代码在Linux上搜索全路径。
However, Pillow, the PIL fork, currently has a PR to search a Linux directory. It's not exactly clear yet which directories to search for all Linux variants, but you can see the code here and perhaps contribute to the PR:
但是，PIL fork 的 Pillow 目前有一个 PR 来搜索 Linux 目录。目前尚不清楚要搜索所有 Linux 变体的目录，但您可以在此处查看代码，并可能对 PR 有所贡献：
回答by Giovanni G. PY
To me worked this on xubuntu:
对我来说，这是在 xubuntu 上工作的：
from PIL import Image,ImageDraw,ImageFont
# sample text and font
unicode_text = u"Hello World!"
font = ImageFont.truetype("/usr/share/fonts/truetype/freefont/FreeMono.ttf", 28, encoding="unic")
# get the line size
text_width, text_height = font.getsize(unicode_text)
# create a blank canvas with extra space between lines
canvas = Image.new('RGB', (text_width + 10, text_height + 10), "orange")
# draw the text onto the text canvas, and use black as the text color
draw = ImageDraw.Draw(canvas)
draw.text((5,5), u'Hello World!', 'blue', font)
# save the blank canvas to a file
canvas.save("unicode-text.png", "PNG")
canvas.show()
Windows version
视窗版本
from PIL import Image, ImageDraw, ImageFont
unicode_text = u"Hello World!"
font = ImageFont.truetype("arial.ttf", 28, encoding="unic")
text_width, text_height = font.getsize(unicode_text)
canvas = Image.new('RGB', (text_width + 10, text_height + 10), "orange")
draw = ImageDraw.Draw(canvas)
draw.text((5, 5), u'Hello World!', 'blue', font)
canvas.save("unicode-text.png", "PNG")
canvas.show()
The output is the same as above
输出和上面一样
回答by Rick
On mac, I simply copy the font file Arial.ttf to the project directory and everything works.
在 mac 上，我只需将字体文件 Arial.ttf 复制到项目目录，一切正常。
回答by Ale
There is a Python fontconfigpackage, whereby one can access system font configuration, The code posted by Jeeg_robot can be changed like so:
有一个Python fontconfig包，可以通过它访问系统字体配置， Jeeg_robot 发布的代码可以像这样更改：
from PIL import Image,ImageDraw,ImageFont
import fontconfig
# find a font file
fonts = fontconfig.query(lang='en')
for i in range(1, len(fonts)):
if fonts[i].fontformat == 'TrueType':
absolute_path = fonts[i].file
break
# the rest is like the original code:
# sample text and font
unicode_text = u"Hello World!"
font = ImageFont.truetype(absolute_path, 28, encoding="unic")
# get the line size
text_width, text_height = font.getsize(unicode_text)
# create a blank canvas with extra space between lines
canvas = Image.new('RGB', (text_width + 10, text_height + 10), "orange")
# draw the text onto the text canvas, and use black as the text color
draw = ImageDraw.Draw(canvas)
draw.text((5,5), u'Hello World!', 'blue', font)
# save the blank canvas to a file
canvas.save("unicode-text.png", "PNG")
canvas.show()
