如何使文本小部件静态
更改小部件文本的字体大小后，如何使其静态？
我正在为您提供所有代码，以便您可以运行该程序。所以不要发誓
from tkinter import*
import tkinter as tk
from tkinter import Toplevel, Listbox, StringVar, BooleanVar, TclError
from tkinter import filedialog, scrolledtext,Menu,END,messagebox
from tkinter.ttk import Checkbutton, Frame, Label, Button, Scrollbar, Style, Entry
from tkinter.font import families, Font
from locale import getdefaultlocale
import PIL
from PIL import Image, ImageTk
__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"]
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("1423x800")
# added weights so the widget resizes correctly with window
root.rowconfigure(0, weight=1)
root.columnconfigure(0, weight=1)
image = ImageTk.PhotoImage(file="0.png")
lab=tk.Label(root, image = image)
lab.grid(row=0, column=0)
text=tk.Text(root,width = 60,height=15, font=Font(family="Helvetica", size=10))
text.grid(row=0, column=0)
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()
这是您最有可能解决问题的代码：
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("1423x800")
# added weights so the widget resizes correctly with window
root.rowconfigure(0, weight=1)
root.columnconfigure(0, weight=1)
image = ImageTk.PhotoImage(file="0.png")
lab=tk.Label(root, image = image)
lab.grid(row=0, column=0)
text=tk.Text(root,width = 60,height=15, font=Font(family="Helvetica", size=10))
text.grid(row=0, column=0)
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()
这可能包括设置框架大小和框架，以及禁止分发，我的一位朋友说。希望这可以帮助你
1 个答案:
答案 0 :(得分：0)
如果为Text小部件指定一个固定的高度和宽度并将其包装在具有相同宽度和高度的Frame中并使用grid_propagate(False)，则当文本变大时，Text小部件将保持相同的大小。
import tkinter as tk
def fontUp():
text.config(font = ("30"))
root = tk.Tk()
root.geometry("800x800")
frm = tk.Frame(root, height = 500, width = 500)
frm.grid(row = 0, column = 0)
frm.grid_propagate(False)
text = tk.Text(frm, height = 500, width = 500)
text.grid(row = 0, column = 0)
btn = tk.Button(root, text="Font bigger", command = fontUp)
btn.grid(row = 2, column = 0)
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