14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307 | class FontDialog(Dialog):
"""A dialog that displays a variety of options for choosing a font.
This dialog constructs and returns a `Font` object based on the
options selected by the user. The initial font is based on OS
settings and will vary.
The font object is returned when the OK button is pressed and
can be passed to any widget that accepts a `font` configuration
option.
"""
def __init__(
self, title: str = "Font Selector", parent: Optional[tkinter.Misc] = None,
default_font: str = "TkDefaultFont") -> None:
"""Create a font selection dialog.
The dialog provides a comprehensive interface for selecting and
previewing fonts, including family, size, weight, slant, and effects
(underline, overstrike). The selected font is returned as a
tkinter.font.Font object when OK is pressed.
Parameters:
title (str):
The dialog window title (default='Font Selector', will be
localized).
parent (Widget):
Parent widget. The dialog will be modal and centered on this
widget.
default_font (str):
Name of the initial font to display. Can be any valid tkinter
font name (e.g., 'TkDefaultFont', 'TkFixedFont', 'TkTextFont',
'TkHeadingFont', etc.) or a custom font name (default='TkDefaultFont').
Returns:
The result property contains a tkinter.font.Font object with the
selected settings, or None if the dialog was cancelled.
"""
title = MessageCatalog.translate(title)
super().__init__(parent=parent, title=title)
self._style = ttk.Style()
self._default = font.nametofont(default_font)
self._actual = self._default.actual()
self._size = ttk.Variable(value=self._actual["size"])
self._family = ttk.Variable(value=self._actual["family"])
self._slant = ttk.Variable(value=self._actual["slant"])
self._weight = ttk.Variable(value=self._actual["weight"])
self._overstrike = ttk.Variable(value=self._actual["overstrike"])
self._underline = ttk.Variable(value=self._actual["underline"])
self._preview_font = font.Font()
self._slant.trace_add("write", self._update_font_preview)
self._weight.trace_add("write", self._update_font_preview)
self._overstrike.trace_add("write", self._update_font_preview)
self._underline.trace_add("write", self._update_font_preview)
_headingfont = font.nametofont("TkHeadingFont")
_headingfont.configure(weight="bold")
self._update_font_preview()
self._families = set([self._family.get()])
for f in font.families():
if all([f, not f.startswith("@"), "emoji" not in f.lower()]):
self._families.add(f)
def create_body(self, master: tkinter.Misc) -> None:
width = utility.scale_size(master, 600)
height = utility.scale_size(master, 500)
self._toplevel.geometry(f"{width}x{height}")
family_size_frame = ttk.Frame(master, padding=10)
family_size_frame.pack(fill=X, anchor=N)
self._initial_focus = self._font_families_selector(family_size_frame)
self._font_size_selector(family_size_frame)
self._font_options_selectors(master, padding=10)
self._font_preview(master, padding=10)
def create_buttonbox(self, master: tkinter.Misc) -> None:
container = ttk.Frame(master, padding=(5, 10))
container.pack(fill=X)
ok_btn = ttk.Button(
master=container,
bootstyle="primary",
text=MessageCatalog.translate("OK"),
command=self._on_submit,
)
ok_btn.pack(side=RIGHT, padx=5)
ok_btn.bind("<Return>", lambda _: ok_btn.invoke())
cancel_btn = ttk.Button(
master=container,
bootstyle="secondary",
text=MessageCatalog.translate("Cancel"),
command=self._on_cancel,
)
cancel_btn.pack(side=RIGHT, padx=5)
cancel_btn.bind("<Return>", lambda _: cancel_btn.invoke())
self._toplevel.bind("<Escape>", func=lambda _: cancel_btn.invoke())
self._toplevel.protocol("WM_DELETE_WINDOW", func=cancel_btn.invoke)
def _font_families_selector(self, master: tkinter.Misc) -> ttk.Treeview:
container = ttk.Frame(master)
container.pack(fill=BOTH, expand=YES, side=LEFT)
header = ttk.Label(
container,
text=MessageCatalog.translate("Family"),
font="TkHeadingFont",
)
header.pack(fill=X, pady=(0, 2), anchor=N)
listbox = ttk.Treeview(
master=container,
height=5,
show="",
columns=[0],
)
listbox.column(0, width=utility.scale_size(listbox, 250))
listbox.pack(side=LEFT, fill=BOTH, expand=YES)
listbox_vbar = ttk.Scrollbar(
container,
command=listbox.yview,
orient=VERTICAL,
bootstyle="rounded",
)
listbox_vbar.pack(side=RIGHT, fill=Y)
listbox.configure(yscrollcommand=listbox_vbar.set)
for f in sorted(self._families):
listbox.insert("", iid=f, index=END, tags=[f], values=[f])
listbox.tag_configure(f, font=(f, self._size.get()))
iid = self._family.get()
listbox.selection_set(iid) # select default value
listbox.see(iid) # ensure default is visible
listbox.bind("<<TreeviewSelect>>", lambda e: self._on_select_font_family(e))
return listbox
def _font_size_selector(self, master: tkinter.Misc) -> None:
container = ttk.Frame(master)
container.pack(side=LEFT, fill=Y, padx=(10, 0))
header = ttk.Label(
container,
text=MessageCatalog.translate("Size"),
font="TkHeadingFont",
)
header.pack(fill=X, pady=(0, 2), anchor=N)
sizes_listbox = ttk.Treeview(container, height=7, columns=[0], show="")
sizes_listbox.column(0, width=utility.scale_size(sizes_listbox, 24))
sizes = [*range(8, 13), *range(13, 30, 2), 36, 48, 72]
for s in sizes:
sizes_listbox.insert("", iid=s, index=END, values=[s])
iid = self._size.get()
sizes_listbox.selection_set(iid)
sizes_listbox.see(iid)
sizes_listbox.bind("<<TreeviewSelect>>", lambda e: self._on_select_font_size(e))
sizes_listbox_vbar = ttk.Scrollbar(
master=container,
orient=VERTICAL,
command=sizes_listbox.yview,
bootstyle="round",
)
sizes_listbox.configure(yscrollcommand=sizes_listbox_vbar.set)
sizes_listbox.pack(side=LEFT, fill=Y, expand=YES, anchor=N)
sizes_listbox_vbar.pack(side=LEFT, fill=Y, expand=YES)
def _font_options_selectors(self, master: tkinter.Misc, padding: int) -> None:
container = ttk.Frame(master, padding=padding)
container.pack(fill=X, padx=2, pady=2, anchor=N)
weight_lframe = ttk.Labelframe(container, text=MessageCatalog.translate("Weight"), padding=5)
weight_lframe.pack(side=LEFT, fill=X, expand=YES)
opt_normal = ttk.Radiobutton(
master=weight_lframe,
text=MessageCatalog.translate("normal"),
value="normal",
variable=self._weight,
)
opt_normal.invoke()
opt_normal.pack(side=LEFT, padx=5, pady=5)
opt_bold = ttk.Radiobutton(
master=weight_lframe,
text=MessageCatalog.translate("bold"),
value="bold",
variable=self._weight,
)
opt_bold.pack(side=LEFT, padx=5, pady=5)
slant_lframe = ttk.Labelframe(container, text=MessageCatalog.translate("Slant"), padding=5)
slant_lframe.pack(side=LEFT, fill=X, padx=10, expand=YES)
opt_roman = ttk.Radiobutton(
master=slant_lframe,
text=MessageCatalog.translate("roman"),
value="roman",
variable=self._slant,
)
opt_roman.invoke()
opt_roman.pack(side=LEFT, padx=5, pady=5)
opt_italic = ttk.Radiobutton(
master=slant_lframe,
text=MessageCatalog.translate("italic"),
value="italic",
variable=self._slant,
)
opt_italic.pack(side=LEFT, padx=5, pady=5)
effects_lframe = ttk.Labelframe(container, text=MessageCatalog.translate("Effects"), padding=5)
effects_lframe.pack(side=LEFT, padx=(2, 0), fill=X, expand=YES)
opt_underline = ttk.Checkbutton(
master=effects_lframe,
text=MessageCatalog.translate("underline"),
variable=self._underline,
)
opt_underline.pack(side=LEFT, padx=5, pady=5)
opt_overstrike = ttk.Checkbutton(
master=effects_lframe,
text=MessageCatalog.translate("overstrike"),
variable=self._overstrike,
)
opt_overstrike.pack(side=LEFT, padx=5, pady=5)
def _font_preview(self, master: tkinter.Misc, padding: int) -> None:
container = ttk.Frame(master, padding=padding)
container.pack(fill=BOTH, expand=YES, anchor=N)
header = ttk.Label(
container,
text=MessageCatalog.translate("Preview"),
font="TkHeadingFont",
)
header.pack(fill=X, pady=2, anchor=N)
content = MessageCatalog.translate("The quick brown fox jumps over the lazy dog.")
self._preview_text = ttk.Text(
master=container,
height=3,
font=self._preview_font,
highlightbackground=self._style.colors.primary,
)
self._preview_text.insert(END, content)
self._preview_text.pack(fill=BOTH, expand=YES)
container.pack_propagate(False)
def _on_select_font_family(self, e: tkinter.Event) -> None:
tree: ttk.Treeview = self._toplevel.nametowidget(e.widget)
fontfamily = tree.selection()[0]
self._family.set(value=fontfamily)
self._update_font_preview()
def _on_select_font_size(self, e: tkinter.Event) -> None:
tree: ttk.Treeview = self._toplevel.nametowidget(e.widget)
fontsize = tree.selection()[0]
self._size.set(value=fontsize)
self._update_font_preview()
def _on_submit(self) -> font.Font:
self._toplevel.destroy()
return self.result
def _on_cancel(self) -> None:
self._result = None
self._toplevel.destroy()
def _update_font_preview(self, *_: Any) -> None:
family = self._family.get()
size = self._size.get()
slant = self._slant.get()
overstrike = self._overstrike.get()
underline = self._underline.get()
weight = self._weight.get()
self._preview_font.config(
family=family,
size=size,
slant=slant,
overstrike=overstrike,
underline=underline,
weight=weight,
)
try:
self._preview_text.configure(font=self._preview_font)
except Exception:
pass
self._result = self._preview_font
|