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178 lines
6.2 KiB
ReStructuredText
178 lines
6.2 KiB
ReStructuredText
8.0.0
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-----
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Backwards incompatible changes
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==============================
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Python 3.5
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^^^^^^^^^^
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Pillow has dropped support for Python 3.5, which reached end-of-life on 2020-09-13.
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PyPy 7.1.x
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^^^^^^^^^^
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Pillow has dropped support for PyPy3 7.1.1.
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PyPy3 7.2.0, released on 2019-10-14, is now the minimum compatible version.
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im.offset
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^^^^^^^^^
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``im.offset()`` has been removed, call :py:func:`.ImageChops.offset()` instead.
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Image.fromstring, im.fromstring and im.tostring
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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* ``Image.fromstring()`` has been removed, call :py:func:`.Image.frombytes()` instead.
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* ``im.fromstring()`` has been removed, call :py:meth:`~PIL.Image.Image.frombytes()` instead.
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* ``im.tostring()`` has been removed, call :py:meth:`~PIL.Image.Image.tobytes()` instead.
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ImageCms.CmsProfile attributes
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Some attributes in :py:class:`PIL.ImageCms.core.CmsProfile` have been removed:
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======================== ===================================================
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Removed Use instead
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======================== ===================================================
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``color_space`` Padded :py:attr:`~.CmsProfile.xcolor_space`
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``pcs`` Padded :py:attr:`~.CmsProfile.connection_space`
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``product_copyright`` Unicode :py:attr:`~.CmsProfile.copyright`
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``product_desc`` Unicode :py:attr:`~.CmsProfile.profile_description`
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``product_description`` Unicode :py:attr:`~.CmsProfile.profile_description`
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``product_manufacturer`` Unicode :py:attr:`~.CmsProfile.manufacturer`
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``product_model`` Unicode :py:attr:`~.CmsProfile.model`
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======================== ===================================================
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API changes
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===========
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ImageDraw.text: stroke_width
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Fixed issue where passing ``stroke_width`` with a non-zero value
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to :py:meth:`.ImageDraw.text` would cause the text to be offset by that amount.
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ImageDraw.text: anchor
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^^^^^^^^^^^^^^^^^^^^^^
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The ``anchor`` parameter of :py:meth:`.ImageDraw.text` has been implemented.
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Use this parameter to change the position of text relative to the
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specified ``xy`` point. See :ref:`text-anchors` for details.
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Add MIME type to PsdImagePlugin
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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"image/vnd.adobe.photoshop" is now registered as the
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:py:class:`.PsdImagePlugin.PsdImageFile` MIME type.
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API additions
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=============
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Image.open: add formats parameter
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Added a new ``formats`` parameter to :py:func:`.Image.open`:
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* A list or tuple of formats to attempt to load the file in.
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This can be used to restrict the set of formats checked.
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Pass ``None`` to try all supported formats. You can print the set of
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available formats by running ``python3 -m PIL`` or using
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the :py:func:`PIL.features.pilinfo` function.
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ImageOps.autocontrast: add mask parameter
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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:py:func:`.ImageOps.autocontrast` can now take a ``mask`` parameter:
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* Histogram used in contrast operation is computed using pixels within the mask.
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If no mask is given the entire image is used for histogram computation.
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ImageOps.autocontrast cutoffs
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Previously, the ``cutoff`` parameter of :py:func:`.ImageOps.autocontrast` could only
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be a single number, used as the percent to cut off from the histogram on the low and
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high ends.
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Now, it can also be a tuple ``(low, high)``.
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ImageDraw.regular_polygon
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^^^^^^^^^^^^^^^^^^^^^^^^^
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A new method :py:meth:`.ImageDraw.regular_polygon`, draws a regular polygon of ``n_sides``, inscribed in a ``bounding_circle``.
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For example ``draw.regular_polygon(((100, 100), 50), 5)``
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draws a pentagon centered at the point ``(100, 100)`` with a polygon radius of ``50``.
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ImageDraw.text: embedded_color
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The methods :py:meth:`.ImageDraw.text` and :py:meth:`.ImageDraw.multiline_text`
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now support fonts with embedded color data.
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To render text with embedded color data, use the parameter ``embedded_color=True``.
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Support for CBDT fonts requires FreeType 2.5 compiled with libpng.
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Support for SBIX fonts requires FreeType 2.5.1 compiled with libpng.
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Support for COLR fonts requires FreeType 2.10.
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SVG fonts are not yet supported.
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ImageDraw.textlength
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^^^^^^^^^^^^^^^^^^^^
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Two new methods :py:meth:`.ImageDraw.textlength` and :py:meth:`.FreeTypeFont.getlength`
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were added, returning the exact advance length of text with 1/64 pixel precision.
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These can be used for word-wrapping or rendering text in parts.
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ImageDraw.textbbox
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^^^^^^^^^^^^^^^^^^
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Three new methods :py:meth:`.ImageDraw.textbbox`, :py:meth:`.ImageDraw.multiline_textbbox`,
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and :py:meth:`.FreeTypeFont.getbbox` return the bounding box of rendered text.
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These functions accept an ``anchor`` parameter, see :ref:`text-anchors` for details.
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Other changes
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=============
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Improved ellipse-drawing algorithm
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The ellipse-drawing algorithm has been changed from drawing a 360-sided polygon to one
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which resembles Bresenham's algorithm for circles. It should be faster and produce
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smoother curves, especially for smaller ellipses.
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ImageDraw.text and ImageDraw.multiline_text
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Fixed multiple issues in methods :py:meth:`.ImageDraw.text` and :py:meth:`.ImageDraw.multiline_text`
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sometimes causing unexpected text alignment issues.
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The ``align`` parameter of :py:meth:`.ImageDraw.multiline_text` now gives better results in some cases.
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TrueType fonts with embedded bitmaps are now supported.
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Added writing of subIFDs
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^^^^^^^^^^^^^^^^^^^^^^^^
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When saving EXIF data, Pillow is now able to write subIFDs, such as the GPS IFD. This
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should happen automatically when saving an image using the EXIF data that it was opened
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with, such as in :py:meth:`~PIL.ImageOps.exif_transpose`.
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Previously, the code of the first tag of the subIFD was incorrectly written as the
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offset.
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Error for large BMP files
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^^^^^^^^^^^^^^^^^^^^^^^^^
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Previously, if a BMP file was too large, an :py:exc:`OSError` would be raised. Now,
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``DecompressionBombError`` is used instead, as Pillow already uses for other formats.
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Dark theme for docs
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^^^^^^^^^^^^^^^^^^^
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The https://pillow.readthedocs.io documentation will use a dark theme if the user has requested the system use one. Uses the ``prefers-color-scheme`` CSS media query.
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