1
2
3
4
5
6
7
8
9
10
11
12
13
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
|
# -*- coding: utf-8 -*-
"""
tkfilebrowser - Alternative to filedialog for Tkinter
Copyright 2017 Juliette Monsel <j_4321@protonmail.com>
tkfilebrowser is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
tkfilebrowser is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Path bar button class
"""
from .constants import add_trace, remove_trace, ttk
class PathButton(ttk.Button):
"""Toggle button class to make the path bar."""
def __init__(self, parent, variable, value, **kwargs):
"""
Create a PathButton.
Like Radiobuttons, only one PathButton in the group (all PathButtons
sharing the same control variable) can be selected.
Options:
* parent: parent widget
* variable: control variable that the PathButton shares with the
other PathButtons in the group (like for Radiobuttons)
* value: when the PathButton is clicked, the control variable is set
to value
* all ttk.Button options
"""
kwargs["style"] = "path.tkfilebrowser.TButton"
kwargs.setdefault("text", "")
txt = kwargs['text']
kwargs.setdefault("width", len(txt) + 1 + txt.count('m') + txt.count('M'))
ttk.Button.__init__(self, parent, **kwargs)
self.variable = variable
self.value = value
self._trace = add_trace(self.variable, "write", self.var_change)
self.bind("<Button-1>", self.on_press)
def on_press(self, event):
"""Change the control variable value when the button is pressed."""
self.variable.set(self.value)
def get_value(self):
"""Return value."""
return self.value
def destroy(self):
"""Remove trace from variable and destroy widget."""
remove_trace(self.variable, "write", self._trace)
ttk.Button.destroy(self)
def var_change(self, *args):
"""Change the state of the button when the control variable changes."""
self.master.update()
self.master.update_idletasks()
if self.variable.get() == self.value:
self.state(("selected",))
else:
self.state(("!selected",))
|
