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File tkFont.py

# Tkinter font wrapper
#
# written by Fredrik Lundh, February 1998
#
# FIXME: should add 'displayof' option where relevant (actual, families,
#        measure, and metrics)
#

__version__ = "0.9"

import Tkinter

# weight/slant
NORMAL = "normal"
ROMAN = "roman"
BOLD   = "bold"
ITALIC = "italic"

def nametofont(name):
    """Given the name of a tk named font, returns a Font representation.
    """
    return Font(name=name, exists=True)

class Font:

"""Represents a named font.

Constructor options are:

font -- font specifier (name, system font, or (family, size, style)-tuple)
    name -- name to use for this font configuration (defaults to a unique name)
    exists -- does a named font by this name already exist?
       Creates a new named font if False, points to the existing font if True.
       Raises _Tkinter.TclError if the assertion is false.

the following are ignored if font is specified:

family -- font 'family', e.g. Courier, Times, Helvetica
    size -- font size in points
    weight -- font thickness: NORMAL, BOLD
    slant -- font slant: ROMAN, ITALIC
    underline -- font underlining: false (0), true (1)
    overstrike -- font strikeout: false (0), true (1)

"""

def _set(self, kw):
        options = []
        for k, v in kw.items():
            if not isinstance(v, basestring):
                v = str(v)
            options.append("-"+k)
            options.append(v)
        return tuple(options)

def _get(self, args):
        options = []
        for k in args:
            options.append("-"+k)
        return tuple(options)

def _mkdict(self, args):
        options = {}
        for i in range(0, len(args), 2):
            options[args[i][1:]] = args[i+1]
        return options

def __init__(self, root=None, font=None, name=None, exists=False, **options):
        if not root:
            root = Tkinter._default_root
        tk = getattr(root, 'tk', root)
        if font:
            # get actual settings corresponding to the given font
            font = tk.splitlist(tk.call("font", "actual", font))
        else:
            font = self._set(options)
        if not name:
            name = "font" + str(id(self))
        self.name = name

if exists:
            self.delete_font = False
            # confirm font exists
            if self.name not in tk.splitlist(tk.call("font", "names")):
                raise Tkinter._tkinter.TclError, "named font %s does not already exist" % (self.name,)
            # if font config info supplied, apply it
            if font:
                tk.call("font", "configure", self.name, *font)
        else:
            # create new font (raises TclError if the font exists)
            tk.call("font", "create", self.name, *font)
            self.delete_font = True
        self._tk = tk
        self._split = tk.splitlist
        self._call  = tk.call

def __str__(self):
        return self.name

def __eq__(self, other):
        return isinstance(other, Font) and self.name == other.name

def __getitem__(self, key):
        return self.cget(key)

def __setitem__(self, key, value):
        self.configure(**{key: value})

def __del__(self):
        try:
            if self.delete_font:
                self._call("font", "delete", self.name)
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception:
            pass

def copy(self):
        "Return a distinct copy of the current font"
        return Font(self._tk, **self.actual())

def actual(self, option=None):
        "Return actual font attributes"
        if option:
            return self._call("font", "actual", self.name, "-"+option)
        else:
            return self._mkdict(
                self._split(self._call("font", "actual", self.name))
                )

def cget(self, option):
        "Get font attribute"
        return self._call("font", "config", self.name, "-"+option)

def config(self, **options):
        "Modify font attributes"
        if options:
            self._call("font", "config", self.name,
                  *self._set(options))
        else:
            return self._mkdict(
                self._split(self._call("font", "config", self.name))
                )

configure = config

def measure(self, text):
        "Return text width"
        return int(self._call("font", "measure", self.name, text))

def metrics(self, *options):
        """Return font metrics.

For best performance, create a dummy widget
        using this font before calling this method."""

if options:
            return int(
                self._call("font", "metrics", self.name, self._get(options))
                )
        else:
            res = self._split(self._call("font", "metrics", self.name))
            options = {}
            for i in range(0, len(res), 2):
                options[res[i][1:]] = int(res[i+1])
            return options

def families(root=None):
    "Get font families (as a tuple)"
    if not root:
        root = Tkinter._default_root
    return root.tk.splitlist(root.tk.call("font", "families"))

def names(root=None):
    "Get names of defined fonts (as a tuple)"
    if not root:
        root = Tkinter._default_root
    return root.tk.splitlist(root.tk.call("font", "names"))

# --------------------------------------------------------------------
# test stuff

if __name__ == "__main__":

root = Tkinter.Tk()

# create a font
    f = Font(family="times", size=30, weight=NORMAL)

print f.actual()
    print f.actual("family")
    print f.actual("weight")

print f.config()
    print f.cget("family")
    print f.cget("weight")

print names()

print f.measure("hello"), f.metrics("linespace")

print f.metrics()

f = Font(font=("Courier", 20, "bold"))
    print f.measure("hello"), f.metrics("linespace")

w = Tkinter.Label(root, text="Hello, world", font=f)
    w.pack()

w = Tkinter.Button(root, text="Quit!", command=root.destroy)
    w.pack()

fb = Font(font=w["font"]).copy()
    fb.config(weight=BOLD)

w.config(font=fb)

Tkinter.mainloop()

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2024-06-24 12:45:06
..	DIR	-	drwxr-xr-x	2024-06-24 12:45:06
test	DIR	-	drwxr-xr-x	2024-06-24 12:45:06
Canvas.py	text/x-python	7.29 KB	-rw-r--r--	2024-04-10 04:58:34
Canvas.pyc	application/octet-stream	15.2 KB	-rw-r--r--	2024-04-10 04:58:44
Canvas.pyo	application/octet-stream	15.2 KB	-rw-r--r--	2024-04-10 04:58:44
Dialog.py	text/x-python	1.53 KB	-rw-r--r--	2024-04-10 04:58:34
Dialog.pyc	application/octet-stream	1.88 KB	-rw-r--r--	2024-04-10 04:58:44
Dialog.pyo	application/octet-stream	1.88 KB	-rw-r--r--	2024-04-10 04:58:44
FileDialog.py	text/x-python	8.62 KB	-rw-r--r--	2024-04-10 04:58:34
FileDialog.pyc	application/octet-stream	9.49 KB	-rw-r--r--	2024-04-10 04:58:44
FileDialog.pyo	application/octet-stream	9.49 KB	-rw-r--r--	2024-04-10 04:58:44
FixTk.py	text/x-python	2.95 KB	-rw-r--r--	2024-04-10 04:58:34
FixTk.pyc	application/octet-stream	2.04 KB	-rw-r--r--	2024-04-10 04:58:44
FixTk.pyo	application/octet-stream	1.98 KB	-rw-r--r--	2024-04-10 04:58:42
ScrolledText.py	text/x-python	1.79 KB	-rw-r--r--	2024-04-10 04:58:34
ScrolledText.pyc	application/octet-stream	2.6 KB	-rw-r--r--	2024-04-10 04:58:44
ScrolledText.pyo	application/octet-stream	2.6 KB	-rw-r--r--	2024-04-10 04:58:44
SimpleDialog.py	text/x-python	3.64 KB	-rw-r--r--	2024-04-10 04:58:34
SimpleDialog.pyc	application/octet-stream	4.24 KB	-rw-r--r--	2024-04-10 04:58:44
SimpleDialog.pyo	application/octet-stream	4.24 KB	-rw-r--r--	2024-04-10 04:58:44
Tix.py	text/x-python	75.41 KB	-rw-r--r--	2024-04-10 04:58:34
Tix.pyc	application/octet-stream	93.84 KB	-rw-r--r--	2024-04-10 04:58:44
Tix.pyo	application/octet-stream	93.84 KB	-rw-r--r--	2024-04-10 04:58:44
Tkconstants.py	text/plain	1.46 KB	-rw-r--r--	2024-04-10 04:58:34
Tkconstants.pyc	application/octet-stream	2.19 KB	-rw-r--r--	2024-04-10 04:58:44
Tkconstants.pyo	application/octet-stream	2.19 KB	-rw-r--r--	2024-04-10 04:58:44
Tkdnd.py	text/plain	11.22 KB	-rw-r--r--	2024-04-10 04:58:34
Tkdnd.pyc	application/octet-stream	12.52 KB	-rw-r--r--	2024-04-10 04:58:44
Tkdnd.pyo	application/octet-stream	12.52 KB	-rw-r--r--	2024-04-10 04:58:44
Tkinter.py	text/x-python	156.85 KB	-rw-r--r--	2024-04-10 04:58:34
Tkinter.pyc	application/octet-stream	195.5 KB	-rw-r--r--	2024-04-10 04:58:44
Tkinter.pyo	application/octet-stream	195.5 KB	-rw-r--r--	2024-04-10 04:58:44
tkColorChooser.py	text/x-python	1.74 KB	-rw-r--r--	2024-04-10 04:58:34
tkColorChooser.pyc	application/octet-stream	1.39 KB	-rw-r--r--	2024-04-10 04:58:44
tkColorChooser.pyo	application/octet-stream	1.39 KB	-rw-r--r--	2024-04-10 04:58:44
tkCommonDialog.py	text/x-python	1.38 KB	-rw-r--r--	2024-04-10 04:58:34
tkCommonDialog.pyc	application/octet-stream	1.48 KB	-rw-r--r--	2024-04-10 04:58:44
tkCommonDialog.pyo	application/octet-stream	1.48 KB	-rw-r--r--	2024-04-10 04:58:44
tkFileDialog.py	text/x-python	5.59 KB	-rw-r--r--	2024-04-10 04:58:34
tkFileDialog.pyc	application/octet-stream	5.04 KB	-rw-r--r--	2024-04-10 04:58:44
tkFileDialog.pyo	application/octet-stream	5.04 KB	-rw-r--r--	2024-04-10 04:58:44
tkFont.py	text/x-python	6.02 KB	-rw-r--r--	2024-04-10 04:58:34
tkFont.pyc	application/octet-stream	7 KB	-rw-r--r--	2024-04-10 04:58:44
tkFont.pyo	application/octet-stream	7 KB	-rw-r--r--	2024-04-10 04:58:44
tkMessageBox.py	text/x-python	3.6 KB	-rw-r--r--	2024-04-10 04:58:34
tkMessageBox.pyc	application/octet-stream	3.8 KB	-rw-r--r--	2024-04-10 04:58:44
tkMessageBox.pyo	application/octet-stream	3.8 KB	-rw-r--r--	2024-04-10 04:58:44
tkSimpleDialog.py	text/x-python	7.54 KB	-rw-r--r--	2024-04-10 04:58:34
tkSimpleDialog.pyc	application/octet-stream	8.9 KB	-rw-r--r--	2024-04-10 04:58:44
tkSimpleDialog.pyo	application/octet-stream	8.9 KB	-rw-r--r--	2024-04-10 04:58:44
ttk.py	text/x-python	54.86 KB	-rw-r--r--	2024-04-10 04:58:34
ttk.pyc	application/octet-stream	61.16 KB	-rw-r--r--	2024-04-10 04:58:44
ttk.pyo	application/octet-stream	61.16 KB	-rw-r--r--	2024-04-10 04:58:44
turtle.py	text/x-python	135.78 KB	-rw-r--r--	2024-04-10 04:58:34
turtle.pyc	application/octet-stream	136.31 KB	-rw-r--r--	2024-04-10 04:58:44
turtle.pyo	application/octet-stream	136.31 KB	-rw-r--r--	2024-04-10 04:58:44

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