6.2.0¶

API Additions¶

文字行程¶

stroke_width and stroke_fill arguments have been added to text drawing operations. They allow text to be outlined, setting the width of the stroke and and the color respectively. If not provided, stroke_fill will default to the fill parameter.

from PIL import Image, ImageDraw, ImageFont

font = ImageFont.truetype("Tests/fonts/FreeMono.ttf", 40)
font.getsize_multiline("A", stroke_width=2)
font.getsize("ABC\nAaaa", stroke_width=2)

im = Image.new("RGB", (100, 100))
draw = ImageDraw.Draw(im)
draw.textsize("A", font, stroke_width=2)
draw.multiline_textsize("ABC\nAaaa", font, stroke_width=2)
draw.text((10, 10), "A", "#f00", font, stroke_width=2, stroke_fill="#0f0")
draw.multiline_text((10, 10), "A\nB", "#f00", font,
                    stroke_width=2, stroke_fill="#0f0")

例如，

from PIL import Image, ImageDraw, ImageFont

im = Image.new("RGB", (120, 130))
draw = ImageDraw.Draw(im)
font = ImageFont.truetype("Tests/fonts/FreeMono.ttf", 120)
draw.text((10, 10), "A", "#f00", font, stroke_width=2, stroke_fill="#0f0")

创建以下图片:

../_images/imagedraw_stroke_different.png

在多显示器的Windows映像严重¶

一个``all_screens``的说法已经被添加到``ImageGrab.grab``。如果``True``，那么所有的监视器将被列入创建的映像中。

API Changes¶

Image.getexif¶

为了允许的Exif数据的延迟加载，``Image.getexif（）``现在返回``Image.Exif``的共享实例。

Deprecations¶

Image.frombuffer¶

There has been a longstanding warning that the defaults of Image.frombuffer may change in the future for the “raw” decoder. The change will now take place in Pillow 7.0.

安全¶

This release catches several buffer overruns, as well as addressing CVE-2019-16865. The CVE is regarding DOS problems, such as consuming large amounts of memory, or taking a large amount of time to process an image.

In RawDecode.c, an error is now thrown if skip is calculated to be less than zero. It is intended to skip padding between lines, not to go backwards.

In PsdImagePlugin, if the combined sizes of the individual parts is larger than the declared size of the extra data field, then it looked for the next layer by seeking backwards. This is now corrected by seeking to (the start of the layer + the size of the extra data field) instead of (the read parts of the layer + the rest of the layer).

减压炸弹检查已被添加到GIF和ICO格式。

如果TIFF尺寸是一个字符串，而不是试图在其上执行操作，现在提出了一个错误。

Other Changes¶

删除bdist_wininst .exe文件安装程序¶

.exe installers fell out of favour with PEP 527, and will be deprecated in Python 3.8. Pillow will no longer be distributing them. Wheels should be used instead.

标志在车轮libwebp¶

When building libwebp for inclusion in wheels, Pillow now adds the -O3 and -DNDEBUG CFLAGS. These flags would be used by default if building libwebp without debugging, and using them fixes a significant decrease in speed when a wheel-installed copy of Pillow performs libwebp operations.