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Fully document PIL.ImageFont
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Stephen Johnson
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commit
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@ -61,21 +61,6 @@ except ImportError:
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# position according to dx, dy.
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# --------------------------------------------------------------------
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##
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# The <b>ImageFont</b> module defines a class with the same name.
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# Instances of this class store bitmap fonts, and are used with the
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# <b>text</b> method of the <b>ImageDraw</b> class.
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# <p>
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# PIL uses it's own font file format to store bitmap fonts. You can
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# use the <b>pilfont</b> utility to convert BDF and PCF font
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# descriptors (X window font formats) to this format.
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# <p>
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# Starting with version 1.1.4, PIL can be configured to support
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# TrueType and OpenType fonts. For earlier version, TrueType
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# support is only available as part of the imToolkit package
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#
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# @see ImageDraw#ImageDraw.text
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# @see pilfont
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class ImageFont:
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"PIL font wrapper"
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@ -197,41 +182,42 @@ class TransposedFont:
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return im.transpose(self.orientation)
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return im
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##
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# Load font file. This function loads a font object from the given
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# bitmap font file, and returns the corresponding font object.
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#
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# @param filename Name of font file.
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# @return A font object.
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# @exception IOError If the file could not be read.
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def load(filename):
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"Load a font file."
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"""
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Load a font file. This function loads a font object from the given
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bitmap font file, and returns the corresponding font object.
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:param filename: Name of font file.
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:return: A font object.
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:exception IOError: If the file could not be read.
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"""
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f = ImageFont()
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f._load_pilfont(filename)
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return f
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##
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# Load a TrueType or OpenType font file, and create a font object.
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# This function loads a font object from the given file, and creates
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# a font object for a font of the given size.
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# <p>
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# This function requires the _imagingft service.
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#
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# @param filename A truetype font file. Under Windows, if the file
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# is not found in this filename, the loader also looks in Windows
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# <b>fonts</b> directory
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# @param size The requested size, in points.
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# @param index Which font face to load (default is first available face).
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# @param encoding Which font encoding to use (default is Unicode). Common
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# encodings are "unic" (Unicode), "symb" (Microsoft Symbol), "ADOB"
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# (Adobe Standard), "ADBE" (Adobe Expert), and "armn" (Apple Roman).
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# See the FreeType documentation for more information.
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# @return A font object.
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# @exception IOError If the file could not be read.
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def truetype(font=None, size=10, index=0, encoding="", filename=None):
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"Load a truetype font file."
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"""
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Load a TrueType or OpenType font file, and create a font object.
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This function loads a font object from the given file, and creates
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a font object for a font of the given size.
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This function requires the _imagingft service.
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:param filename: A truetype font file. Under Windows, if the file
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is not found in this filename, the loader also looks in
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Windows :file:`fonts/` directory.
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:param size: The requested size, in points.
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:param index: Which font face to load (default is first available face).
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:param encoding: Which font encoding to use (default is Unicode). Common
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encodings are "unic" (Unicode), "symb" (Microsoft
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Symbol), "ADOB" (Adobe Standard), "ADBE" (Adobe Expert),
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and "armn" (Apple Roman). See the FreeType documentation
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for more information.
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:return: A font object.
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:exception IOError: If the file could not be read.
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"""
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if filename:
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if warnings:
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@ -251,17 +237,16 @@ def truetype(font=None, size=10, index=0, encoding="", filename=None):
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return FreeTypeFont(filename, size, index, encoding)
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raise
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##
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# Load font file. Same as load, but searches for a bitmap font along
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# the Python path.
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#
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# @param filename Name of font file.
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# @return A font object.
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# @exception IOError If the file could not be read.
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# @see #load
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def load_path(filename):
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"Load a font file, searching along the Python path."
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"""
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Load font file. Same as :py:func:`~PIL.ImageFont.load`, but searches for a
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bitmap font along the Python path.
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:param filename: Name of font file.
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:return: A font object.
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:exception IOError: If the file could not be read.
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"""
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for dir in sys.path:
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if isDirectory(dir):
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if not isinstance(filename, str):
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@ -275,13 +260,14 @@ def load_path(filename):
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pass
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raise IOError("cannot find font file")
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##
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# Load a (probably rather ugly) default font.
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#
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# @return A font object.
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def load_default():
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"Load a default font."
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"""Load a "better than nothing" default font.
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.. versionadded:: 1.1.4
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:return: A font object.
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"""
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from io import BytesIO
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import base64
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f = ImageFont()
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@ -406,6 +392,7 @@ w7IkEbzhVQAAAABJRU5ErkJggg==
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'''))))
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return f
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if __name__ == "__main__":
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# create font data chunk for embedding
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import base64, os, sys
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@ -7,11 +7,8 @@
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The :py:mod:`ImageEnhance` module contains a number of classes that can be used
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for image enhancement.
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Example
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-------
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Vary the Sharpness of an Image
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Example: Vary the sharpness of an image
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---------------------------------------
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.. code-block:: python
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@ -5,15 +5,15 @@
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=========================
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The :py:mod:`ImageFilter` module contains definitions for a pre-defined set of
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filters, which can be be used with :py:meth:`Image.filter()
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<PIL.Image.Image.filter>`.
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filters, which can be be used with the :py:meth:`Image.filter()
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<PIL.Image.Image.filter>` method.
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Example Filter an image
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-----------------------
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Example: Filter an image
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------------------------
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.. code-block:: python
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import ImageFilter
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from PIL import ImageFilter
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im1 = im.filter(ImageFilter.BLUR)
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69
docs/reference/ImageFont.rst
Normal file
69
docs/reference/ImageFont.rst
Normal file
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@ -0,0 +1,69 @@
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.. py:module:: PIL.ImageFont
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.. py:currentmodule:: PIL.ImageFont
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:mod:`ImageFont` Module
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=======================
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The :py:mod:`ImageFont` module defines a class with the same name. Instances of
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this class store bitmap fonts, and are used with the
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:py:meth:`PIL.ImageDraw.Draw.text` method.
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PIL uses its own font file format to store bitmap fonts. You can use the
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:command`pilfont` utility to convert BDF and PCF font descriptors (X window
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font formats) to this format.
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Starting with version 1.1.4, PIL can be configured to support TrueType and
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OpenType fonts (as well as other font formats supported by the FreeType
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library). For earlier versions, TrueType support is only available as part of
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the imToolkit package
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Example
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-------
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.. code-block:: python
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from PIL import ImageFont, ImageDraw
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draw = ImageDraw.Draw(image)
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# use a bitmap font
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font = ImageFont.load("arial.pil")
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draw.text((10, 10), "hello", font=font)
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# use a truetype font
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font = ImageFont.truetype("arial.ttf", 15)
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draw.text((10, 25), "world", font=font)
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Functions
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---------
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.. autofunction:: PIL.ImageFont.load
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.. autofunction:: PIL.ImageFont.load_path
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.. autofunction:: PIL.ImageFont.truetype
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.. autofunction:: PIL.ImageFont.load_default
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Methods
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-------
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.. py:method:: PIL.ImageFont.ImageFont.getsize(text)
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:return: (width, height)
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.. py:method:: PIL.ImageFont.ImageFont.getmask(text, mode='')
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Create a bitmap for the text.
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If the font uses antialiasing, the bitmap should have mode “L” and use a
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maximum value of 255. Otherwise, it should have mode “1”.
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:param text: Text to render.
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:param mode: Used by some graphics drivers to indicate what mode the
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driver prefers; if empty, the renderer may return either
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mode. Note that the mode is always a string, to simplify
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C-level implementations.
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.. versionadded:: 1.1.5
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:return: An internal PIL storage memory instance as defined by the
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:py:mod:`PIL.Image.core` interface module.
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@ -11,4 +11,5 @@ Reference
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ImageEnhance
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ImageFile
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ImageFilter
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ImageFont
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../PIL
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