Everything you need to make this work is located in the callback() and askfont() methods in the font code. You need to take elements from callback() and askfont() and incorporate them into your code.
You will also need to import the font code. Lets say the Font code is in the same directory as our main.py and we call this file font.py.
UPDATE: To address the latest addition to your question all you need to do is text.pack(expand=True, fill="x"). This will tell the text widget to fill the frame or window it is in.
Your code should look something like this:
from tkinter import *
import font as pyfont
import tkinter.font as xFont
def edit_font():
# this line waits for askfont to return the new chosen font.
font = pyfont.askfont(root, title="Choose a font")
# this if statement will convert the dictionary that is returned from
# the askfont function into something we can use to configure the texbox.
if font:
# spaces in the family name need to be escaped
font['family'] = font['family'].replace(' ', '\ ')
font_str = "%(family)s %(size)i %(weight)s %(slant)s" % font
if font['underline']:
font_str += ' underline'
if font['overstrike']:
font_str += ' overstrike'
text.configure(font=font_str)
root=Tk()
root.geometry("600x400")
text=Text(root, font=xFont.Font(family="Helvetica", size=10))
text.pack(expand=True, fill="x")
king=Menu(root)
root.config(menu=king)
view= Menu(king, tearoff=0)
view2=Menu(view, tearoff=0)
view2.add_command(label="Font",command=edit_font)
view.add_cascade(label="Text", menu=view2)
king.add_cascade(label="View", menu=view)
root.mainloop()
UPDATE:
Because in the comments you stated the code is all in the same file that changes things. I recommend against this and you should separate your code to their own files and import what you need.
That said to address the issues at hand please see the below code.
At the bottom is your GUI code. Let me know if you have any questions.
try:
import tkinter as tk
from tkinter import Toplevel, Listbox, StringVar, BooleanVar, TclError
from tkinter.ttk import Checkbutton, Frame, Label, Button, Scrollbar, Style, Entry
from tkinter.font import families, Font
except ImportError:
import Tkinter as tk
from Tkinter import Toplevel, Listbox, StringVar, BooleanVar
from ttk import Checkbutton, Frame, Label, Button, Scrollbar, Style, Entry
from tkFont import families, Font
from locale import getdefaultlocale
__version__ = "2.0.2"
# --- translation
EN = {"Cancel": "Cancel", "Bold": "Bold", "Italic": "Italic",
"Underline": "Underline", "Overstrike": "Strikethrough"}
FR = {"Cancel": "Annuler", "Bold": "Gras", "Italic": "Italique",
"Underline": "Souligné", "Overstrike": "Barré"}
LANGUAGES = {"fr": FR, "en": EN}
if getdefaultlocale()[0][:2] == "fr":
TR = LANGUAGES["fr"]
else:
TR = LANGUAGES["en"]
# --- FontChooser class
class FontChooser(Toplevel):
""".Font chooser dialog."""
def __init__(self, master, font_dict={}, text="Abcd", title="Font Chooser",
**kwargs):
"""
Create a new FontChooser instance.
Arguments:
master: master window
font_dict: dictionnary, like the one returned by the .actual
method of a Font object:
{'family': 'DejaVu Sans',
'overstrike': False,
'size': 12,
'slant': 'italic' or 'roman',
'underline': False,
'weight': 'bold' or 'normal'}
text: text to be displayed in the preview label
title: window title
**kwargs: additional keyword arguments to be passed to
Toplevel.__init__
"""
Toplevel.__init__(self, master, **kwargs)
self.title(title)
self.resizable(False, False)
self.protocol("WM_DELETE_WINDOW", self.quit)
self._validate_family = self.register(self.validate_font_family)
self._validate_size = self.register(self.validate_font_size)
# --- variable storing the chosen font
self.res = ""
style = Style(self)
style.configure("prev.TLabel", background="white")
bg = style.lookup("TLabel", "background")
self.configure(bg=bg)
# --- family list
self.fonts = list(set(families()))
self.fonts.append("TkDefaultFont")
self.fonts.sort()
for i in range(len(self.fonts)):
self.fonts[i] = self.fonts[i].replace(" ", "\ ")
max_length = int(2.5 * max([len(font) for font in self.fonts])) // 3
self.sizes = ["%i" % i for i in (list(range(6, 17)) + list(range(18, 32, 2)))]
# --- font default
font_dict["weight"] = font_dict.get("weight", "normal")
font_dict["slant"] = font_dict.get("slant", "roman")
font_dict["underline"] = font_dict.get("underline", False)
font_dict["overstrike"] = font_dict.get("overstrike", False)
font_dict["family"] = font_dict.get("family",
self.fonts[0].replace('\ ', ' '))
font_dict["size"] = font_dict.get("size", 10)
# --- creation of the widgets
# ------ style parameters (bold, italic ...)
options_frame = Frame(self, relief="groove", borderwidth=2)
self.font_family = StringVar(self, " ".join(self.fonts))
self.font_size = StringVar(self, " ".join(self.sizes))
self.var_bold = BooleanVar(self, font_dict["weight"] == "bold")
b_bold = Checkbutton(options_frame, text=TR["Bold"],
command=self.toggle_bold,
variable=self.var_bold)
b_bold.grid(row=0, sticky="w", padx=4, pady=(4, 2))
self.var_italic = BooleanVar(self, font_dict["slant"] == "italic")
b_italic = Checkbutton(options_frame, text=TR["Italic"],
command=self.toggle_italic,
variable=self.var_italic)
b_italic.grid(row=1, sticky="w", padx=4, pady=2)
self.var_underline = BooleanVar(self, font_dict["underline"])
b_underline = Checkbutton(options_frame, text=TR["Underline"],
command=self.toggle_underline,
variable=self.var_underline)
b_underline.grid(row=2, sticky="w", padx=4, pady=2)
self.var_overstrike = BooleanVar(self, font_dict["overstrike"])
b_overstrike = Checkbutton(options_frame, text=TR["Overstrike"],
variable=self.var_overstrike,
command=self.toggle_overstrike)
b_overstrike.grid(row=3, sticky="w", padx=4, pady=(2, 4))
# ------ Size and family
self.var_size = StringVar(self)
self.entry_family = Entry(self, width=max_length, validate="key",
validatecommand=(self._validate_family, "%d", "%S",
"%i", "%s", "%V"))
self.entry_size = Entry(self, width=4, validate="key",
textvariable=self.var_size,
validatecommand=(self._validate_size, "%d", "%P", "%V"))
self.list_family = Listbox(self, selectmode="browse",
listvariable=self.font_family, highlightthickness=0, exportselection=False, width=max_length)
self.list_size = Listbox(self, selectmode="browse",
listvariable=self.font_size, highlightthickness=0, exportselection=False, width=4)
scroll_family = Scrollbar(self, orient="vertical", command=self.list_family.yview)
scroll_size = Scrollbar(self, orient="vertical", command=self.list_size.yview)
self.preview_font = Font(self, **font_dict)
if len(text) > 30:
text = text[:30]
self.preview = Label(self, relief="groove", style="prev.TLabel", text=text, font=self.preview_font, anchor="center")
self.list_family.configure(yscrollcommand=scroll_family.set)
self.list_size.configure(yscrollcommand=scroll_size.set)
self.entry_family.insert(0, font_dict["family"])
self.entry_family.selection_clear()
self.entry_family.icursor("end")
self.entry_size.insert(0, font_dict["size"])
try:
i = self.fonts.index(self.entry_family.get().replace(" ", "\ "))
except ValueError:
i = 0
self.list_family.selection_clear(0, "end")
self.list_family.selection_set(i)
self.list_family.see(i)
try:
i = self.sizes.index(self.entry_size.get())
self.list_size.selection_clear(0, "end")
self.list_size.selection_set(i)
self.list_size.see(i)
except ValueError:
pass
self.entry_family.grid(row=0, column=0, sticky="ew", pady=(10, 1), padx=(10, 0))
self.entry_size.grid(row=0, column=2, sticky="ew", pady=(10, 1), padx=(10, 0))
self.list_family.grid(row=1, column=0, sticky="nsew", pady=(1, 10), padx=(10, 0))
self.list_size.grid(row=1, column=2, sticky="nsew", pady=(1, 10), padx=(10, 0))
scroll_family.grid(row=1, column=1, sticky='ns', pady=(1, 10))
scroll_size.grid(row=1, column=3, sticky='ns', pady=(1, 10))
options_frame.grid(row=0, column=4, rowspan=2, padx=10, pady=10, ipadx=10)
self.preview.grid(row=2, column=0, columnspan=5, sticky="eswn", padx=10, pady=(0, 10), ipadx=4, ipady=4)
button_frame = Frame(self)
button_frame.grid(row=3, column=0, columnspan=5, pady=(0, 10), padx=10)
Button(button_frame, text="Ok", command=self.ok).grid(row=0, column=0, padx=4, sticky='ew')
Button(button_frame, text=TR["Cancel"], command=self.quit).grid(row=0, column=1, padx=4, sticky='ew')
self.list_family.bind('<<ListboxSelect>>', self.update_entry_family)
self.list_size.bind('<<ListboxSelect>>', self.update_entry_size, add=True)
self.list_family.bind("<KeyPress>", self.keypress)
self.entry_family.bind("<Return>", self.change_font_family)
self.entry_family.bind("<Tab>", self.tab)
self.entry_size.bind("<Return>", self.change_font_size)
self.entry_family.bind("<Down>", self.down_family)
self.entry_size.bind("<Down>", self.down_size)
self.entry_family.bind("<Up>", self.up_family)
self.entry_size.bind("<Up>", self.up_size)
self.bind_class("TEntry", "<Control-a>", self.select_all)
self.wait_visibility(self)
self.grab_set()
self.entry_family.focus_set()
self.lift()
def select_all(self, event):
event.widget.selection_range(0, "end")
def keypress(self, event):
key = event.char.lower()
l = [i for i in self.fonts if i[0].lower() == key]
if l:
i = self.fonts.index(l[0])
self.list_family.selection_clear(0, "end")
self.list_family.selection_set(i)
self.list_family.see(i)
self.update_entry_family()
def up_family(self, event):
try:
i = self.list_family.curselection()[0]
self.list_family.selection_clear(0, "end")
if i <= 0:
i = len(self.fonts)
self.list_family.see(i - 1)
self.list_family.select_set(i - 1)
except TclError:
self.list_family.selection_clear(0, "end")
i = len(self.fonts)
self.list_family.see(i - 1)
self.list_family.select_set(i - 1)
self.list_family.event_generate('<<ListboxSelect>>')
def up_size(self, event):
"""Navigate in the size listbox with up key."""
try:
s = self.var_size.get()
if s in self.sizes:
i = self.sizes.index(s)
elif s:
sizes = list(self.sizes)
sizes.append(s)
sizes.sort(key=lambda x: int(x))
i = sizes.index(s)
else:
i = 0
self.list_size.selection_clear(0, "end")
if i <= 0:
i = len(self.sizes)
self.list_size.see(i - 1)
self.list_size.select_set(i - 1)
except TclError:
i = len(self.sizes)
self.list_size.see(i - 1)
self.list_size.select_set(i - 1)
self.list_size.event_generate('<<ListboxSelect>>')
def down_family(self, event):
"""Navigate in the family listbox with down key."""
try:
i = self.list_family.curselection()[0]
self.list_family.selection_clear(0, "end")
if i >= len(self.fonts):
i = -1
self.list_family.see(i + 1)
self.list_family.select_set(i + 1)
except TclError:
self.list_family.selection_clear(0, "end")
self.list_family.see(0)
self.list_family.select_set(0)
self.list_family.event_generate('<<ListboxSelect>>')
def down_size(self, event):
"""Navigate in the size listbox with down key."""
try:
s = self.var_size.get()
if s in self.sizes:
i = self.sizes.index(s)
elif s:
sizes = list(self.sizes)
sizes.append(s)
sizes.sort(key=lambda x: int(x))
i = sizes.index(s) - 1
else:
s = len(self.sizes) - 1
self.list_size.selection_clear(0, "end")
if i < len(self.sizes) - 1:
self.list_size.selection_set(i + 1)
self.list_size.see(i + 1)
else:
self.list_size.see(0)
self.list_size.select_set(0)
except TclError:
self.list_size.selection_set(0)
self.list_size.event_generate('<<ListboxSelect>>')
def toggle_bold(self):
"""Update font preview weight."""
b = self.var_bold.get()
self.preview_font.configure(weight=["normal", "bold"][b])
def toggle_italic(self):
"""Update font preview slant."""
b = self.var_italic.get()
self.preview_font.configure(slant=["roman", "italic"][b])
def toggle_underline(self):
"""Update font preview underline."""
b = self.var_underline.get()
self.preview_font.configure(underline=b)
def toggle_overstrike(self):
"""Update font preview overstrike."""
b = self.var_overstrike.get()
self.preview_font.configure(overstrike=b)
def change_font_family(self, event=None):
"""Update font preview family."""
family = self.entry_family.get()
if family.replace(" ", "\ ") in self.fonts:
self.preview_font.configure(family=family)
def change_font_size(self, event=None):
"""Update font preview size."""
size = int(self.var_size.get())
self.preview_font.configure(size=size)
def validate_font_size(self, d, ch, V):
"""Validation of the size entry content."""
l = [i for i in self.sizes if i[:len(ch)] == ch]
i = None
if l:
i = self.sizes.index(l[0])
elif ch.isdigit():
sizes = list(self.sizes)
sizes.append(ch)
sizes.sort(key=lambda x: int(x))
i = min(sizes.index(ch), len(self.sizes))
if i is not None:
self.list_size.selection_clear(0, "end")
self.list_size.selection_set(i)
deb = self.list_size.nearest(0)
fin = self.list_size.nearest(self.list_size.winfo_height())
if V != "forced":
if i < deb or i > fin:
self.list_size.see(i)
return True
if d == '1':
return ch.isdigit()
else:
return True
def tab(self, event):
"""Move at the end of selected text on tab press."""
self.entry_family = event.widget
self.entry_family.selection_clear()
self.entry_family.icursor("end")
return "break"
def validate_font_family(self, action, modif, pos, prev_txt, V):
"""Completion of the text in the entry with existing font names."""
if self.entry_family.selection_present():
sel = self.entry_family.selection_get()
txt = prev_txt.replace(sel, '')
else:
txt = prev_txt
if action == "0":
txt = txt[:int(pos)] + txt[int(pos) + 1:]
return True
else:
txt = txt[:int(pos)] + modif + txt[int(pos):]
ch = txt.replace(" ", "\ ")
l = [i for i in self.fonts if i[:len(ch)] == ch]
if l:
i = self.fonts.index(l[0])
self.list_family.selection_clear(0, "end")
self.list_family.selection_set(i)
deb = self.list_family.nearest(0)
fin = self.list_family.nearest(self.list_family.winfo_height())
index = self.entry_family.index("insert")
self.entry_family.delete(0, "end")
self.entry_family.insert(0, l[0].replace("\ ", " "))
self.entry_family.selection_range(index + 1, "end")
self.entry_family.icursor(index + 1)
if V != "forced":
if i < deb or i > fin:
self.list_family.see(i)
return True
else:
return False
def update_entry_family(self, event=None):
"""Update family entry when an item is selected in the family listbox."""
# family = self.list_family.get("@%i,%i" % (event.x , event.y))
family = self.list_family.get(self.list_family.curselection()[0])
self.entry_family.delete(0, "end")
self.entry_family.insert(0, family)
self.entry_family.selection_clear()
self.entry_family.icursor("end")
self.change_font_family()
def update_entry_size(self, event):
"""Update size entry when an item is selected in the size listbox."""
# size = self.list_size.get("@%i,%i" % (event.x , event.y))
size = self.list_size.get(self.list_size.curselection()[0])
self.var_size.set(size)
self.change_font_size()
def ok(self):
"""Validate choice."""
self.res = self.preview_font.actual()
self.quit()
def get_res(self):
"""Return chosen font."""
return self.res
def quit(self):
self.destroy()
def askfont(master=None, text="Abcd", title="Font Chooser", **font_args):
chooser = FontChooser(master, font_args, text, title)
chooser.wait_window(chooser)
return chooser.get_res()
def edit_font():
font = askfont(root, title="Choose a font")
if font:
font['family'] = font['family'].replace(' ', '\ ')
font_str = "%(family)s %(size)i %(weight)s %(slant)s" % font
if font['underline']:
font_str += ' underline'
if font['overstrike']:
font_str += ' overstrike'
text.configure(font=font_str)
root=tk.Tk()
root.geometry("600x400")
# added weights so the widget resizes correctly with window
root.rowconfigure(0, weight=1)
root.columnconfigure(0, weight=1)
text=tk.Text(root, font=Font(family="Helvetica", size=10))
text.grid(row=0, column=0, sticky="nsew")
king=tk.Menu(root)
root.config(menu=king)
view=tk.Menu(king, tearoff=0)
view2=tk.Menu(view, tearoff=0)
view2.add_command(label="Font",command=edit_font)
view.add_cascade(label="Text", menu=view2)
king.add_cascade(label="View", menu=view)
root.mainloop()
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solved How to bind classes to another widget