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2.8 KiB
ReStructuredText
96 lines
No EOL
2.8 KiB
ReStructuredText
:mod:`tkinter.font` --- Tkinter font wrapper
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============================================
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.. module:: tkinter.font
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:platform: Tk
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:synopsis: Tkinter font-wrapping class
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**Source code:** :source:`Lib/tkinter/font.py`
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--------------
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The :mod:`tkinter.font` module provides the :class:`Font` class for creating
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and using named fonts.
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The different font weights and slants are:
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.. data:: NORMAL
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BOLD
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ITALIC
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ROMAN
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.. class:: Font(root=None, font=None, name=None, exists=False, **options)
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The :class:`Font` class represents a named font. *Font* instances are given
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unique names and can be specified by their family, size, and style
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configuration. Named fonts are Tk's method of creating and identifying
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fonts as a single object, rather than specifying a font by its attributes
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with each occurrence.
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arguments:
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| *font* - font specifier tuple (family, size, options)
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| *name* - unique font name
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| *exists* - self points to existing named font if true
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additional keyword options (ignored if *font* is specified):
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| *family* - font family i.e. Courier, Times
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| *size* - font size
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| If *size* is positive it is interpreted as size in points.
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| If *size* is a negative number its absolute value is treated as
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as size in pixels.
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| *weight* - font emphasis (NORMAL, BOLD)
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| *slant* - ROMAN, ITALIC
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| *underline* - font underlining (0 - none, 1 - underline)
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| *overstrike* - font strikeout (0 - none, 1 - strikeout)
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.. method:: actual(option=None, displayof=None)
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Return the attributes of the font.
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.. method:: cget(option)
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Retrieve an attribute of the font.
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.. method:: config(**options)
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Modify attributes of the font.
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.. method:: copy()
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Return new instance of the current font.
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.. method:: measure(text, displayof=None)
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Return amount of space the text would occupy on the specified display
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when formatted in the current font. If no display is specified then the
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main application window is assumed.
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.. method:: metrics(*options, **kw)
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Return font-specific data.
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Options include:
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*ascent* - distance between baseline and highest point that a
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character of the font can occupy
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*descent* - distance between baseline and lowest point that a
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character of the font can occupy
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*linespace* - minimum vertical separation necessary between any two
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characters of the font that ensures no vertical overlap between lines.
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*fixed* - 1 if font is fixed-width else 0
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.. function:: families(root=None, displayof=None)
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Return the different font families.
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.. function:: names(root=None)
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Return the names of defined fonts.
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.. function:: nametofont(name)
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Return a :class:`Font` representation of a tk named font. |