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
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
|
# (C) Copyright 2008-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
# ------------------------------------------------------------------------------
# Copyright (c) 2007, Riverbank Computing Limited
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD license.
# However, when used with the GPL version of PyQt the additional terms
# described in the PyQt GPL exception also apply
#
# Author: Riverbank Computing Limited
# ------------------------------------------------------------------------------
""" Defines the various button editors for the PyQt user interface toolkit.
"""
from pyface.qt import QtCore, QtGui
from pyface.api import Image
from traits.api import List, Str, observe, on_trait_change
from .editor import Editor
class SimpleEditor(Editor):
"""Simple style editor for a button."""
# -------------------------------------------------------------------------
# Trait definitions:
# -------------------------------------------------------------------------
#: The button label
label = Str()
#: The list of items in a drop-down menu, if any
# menu_items = List()
#: The selected item in the drop-down menu.
selected_item = Str()
def init(self, parent):
"""Finishes initializing the editor by creating the underlying toolkit
widget.
"""
label = self.factory.label or self.item.get_label(self.ui)
if self.factory.values_trait:
self.control = QtGui.QToolButton()
self.control.toolButtonStyle = QtCore.Qt.ToolButtonStyle.ToolButtonTextOnly
self.control.setText(self.string_value(label))
self.object.observe(
self._update_menu, self.factory.values_trait + ".items"
)
self._menu = QtGui.QMenu()
self._update_menu()
self.control.setMenu(self._menu)
else:
self.control = QtGui.QPushButton(self.string_value(label))
self._menu = None
self.control.setAutoDefault(False)
self.sync_value(self.factory.label_value, "label", "from")
# The connection type is set to workaround Qt5 + MacOSX issue with
# event dispatching. Without the type set to QueuedConnection, other
# widgets may not repaint properly in response to a button click.
# See enthought/traitsui#1308
self.control.clicked.connect(
self.update_object,
type=QtCore.Qt.ConnectionType.QueuedConnection,
)
self.set_tooltip()
def dispose(self):
"""Disposes of the contents of an editor."""
if self.factory.values_trait:
self.object.observe(
self._update_menu,
self.factory.values_trait + ".items",
remove=True,
)
if self.control is not None:
self.control.clicked.disconnect(self.update_object)
super().dispose()
def _label_changed(self, label):
self.control.setText(self.string_value(label))
def _update_menu(self, event=None):
self._menu.blockSignals(True)
self._menu.clear()
for item in getattr(self.object, self.factory.values_trait):
action = self._menu.addAction(item)
action.triggered.connect(
lambda event, name=item: self._menu_selected(name)
)
self.selected_item = ""
self._menu.blockSignals(False)
def _menu_selected(self, item_name):
self.selected_item = item_name
self.label = item_name
def update_object(self):
"""Handles the user clicking the button by setting the factory value
on the object.
"""
if self.control is None:
return
if self.selected_item != "":
self.value = self.selected_item
else:
self.value = self.factory.value
# If there is an associated view, then display it:
if (self.factory is not None) and (self.factory.view is not None):
self.object.edit_traits(
view=self.factory.view, parent=self.control
)
def update_editor(self):
"""Updates the editor when the object trait changes externally to the
editor.
"""
pass
class CustomEditor(SimpleEditor):
"""Custom style editor for a button, which can contain an image."""
#: The button image
image = Image()
#: The mapping of button styles to Qt classes.
_STYLE_MAP = {
"checkbox": QtGui.QCheckBox,
"radio": QtGui.QRadioButton,
"toolbar": QtGui.QToolButton,
}
def init(self, parent):
"""Finishes initializing the editor by creating the underlying toolkit
widget.
"""
# FIXME: We ignore orientation, width_padding and height_padding.
factory = self.factory
if factory.label:
label = factory.label
else:
label = self.item.get_label(self.ui)
btype = self._STYLE_MAP.get(factory.style, QtGui.QPushButton)
self.control = btype()
self.control.setText(self.string_value(label))
if factory.image is not None:
self.control.setIcon(factory.image.create_icon())
self.sync_value(self.factory.label_value, "label", "from")
self.sync_value(self.factory.image_value, "image", "from")
self.control.clicked.connect(self.update_object)
self.set_tooltip()
@observe("image")
def _image_updated(self, event):
image = event.new
self.control.setIcon(image.create_icon())
def dispose(self):
"""Disposes of the contents of an editor."""
if self.control is not None:
self.control.clicked.disconnect(self.update_object)
# FIXME: Maybe better to let this class subclass Editor directly
# enthought/traitsui#884
Editor.dispose(self)
|
