mirror of
https://github.com/python-pillow/Pillow.git
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104 lines
3.3 KiB
ReStructuredText
104 lines
3.3 KiB
ReStructuredText
10.1.0
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------
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Backwards Incompatible Changes
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==============================
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Setting image mode
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^^^^^^^^^^^^^^^^^^
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If you attempt to set the mode of an image directly, e.g.
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``im.mode = "RGBA"``, you will now receive an ``AttributeError``. This is
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not about removing existing functionality, but instead about raising an
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explicit error to prevent later consequences. The ``convert`` method is the
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correct way to change an image's mode.
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API Changes
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===========
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Accept a list in getpixel()
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^^^^^^^^^^^^^^^^^^^^^^^^^^^
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:py:meth:`~PIL.Image.Image.getpixel` now accepts a list of coordinates, as well
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as a tuple. ::
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from PIL import Image
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im = Image.new("RGB", (1, 1))
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im.getpixel((0, 0))
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im.getpixel([0, 0])
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BoxBlur and GaussianBlur allow for different x and y radii
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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:py:class:`~PIL.ImageFilter.BoxBlur` and
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:py:class:`~PIL.ImageFilter.GaussianBlur` now allow a sequence of x and y radii
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to be specified, rather than a single number for both dimensions. ::
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from PIL import ImageFilter
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ImageFilter.BoxBlur((2, 5))
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ImageFilter.GaussianBlur((2, 5))
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API Additions
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=============
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EpsImagePlugin.gs_binary
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^^^^^^^^^^^^^^^^^^^^^^^^
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``EpsImagePlugin.gs_windows_binary`` stores the name of the Ghostscript
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executable on Windows. ``EpsImagePlugin.gs_binary`` has now been added for all
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platforms, and can be used to customise the name of the executable, or disable
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use entirely through ``EpsImagePlugin.gs_binary = False``.
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has_transparency_data
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^^^^^^^^^^^^^^^^^^^^^
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Images now have :py:attr:`~PIL.Image.Image.has_transparency_data` to indicate
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whether the image has transparency data, whether in the form of an alpha
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channel, a palette with an alpha channel, or a "transparency" key in the
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:py:attr:`~PIL.Image.Image.info` dictionary.
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Even if this attribute is true, the image might still appear solid, if all of
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the values shown within are opaque.
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ImageOps.cover
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^^^^^^^^^^^^^^
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Returns a resized version of the image, so that the requested size is covered,
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while maintaining the original aspect ratio.
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See :ref:`relative-resize` for a comparison between this and similar ``ImageOps``
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methods.
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size and font_size arguments when using default font
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Pillow has had a "better than nothing" default font, which can only be drawn at
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one font size. Now, if FreeType support is available, a version of
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`Aileron Regular <https://dotcolon.net/font/aileron>`_ is loaded, which can be
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drawn at chosen font sizes.
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The following ``size`` and ``font_size`` arguments can now be used to specify a
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font size for this new builtin font::
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ImageFont.load_default(size=24)
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draw.text((0, 0), "test", font_size=24)
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draw.textlength((0, 0), "test", font_size=24)
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draw.textbbox((0, 0), "test", font_size=24)
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draw.multiline_text((0, 0), "test", font_size=24)
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draw.multiline_textbbox((0, 0), "test", font_size=24)
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Other Changes
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=============
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Added support for DDS BC5U and 8-bit color indexed images
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Support has been added to read BC5U DDS files as RGB images, and
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PALETTEINDEXED8 DDS files as P mode images.
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Support reading signed 8-bit YCbCr TIFF images
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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TIFF images with unsigned integer data, 8 bits per sample and a photometric
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interpretation of YCbCr can now be read.
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