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
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
|
"""
***************************************************************************
ListMultiSelectWidget.py
---------------------
Date : June 2016
Copyright : (C) 2016 by Marco Bernasocchi
Email : marco at opengis.ch
***************************************************************************
* *
* This program 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 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = "Marco Bernasocchi"
__date__ = "June 2016"
__copyright__ = "(C) 2016, Marco Bernasocchi"
from qgis.PyQt.QtWidgets import (
QGroupBox,
QPushButton,
QSizePolicy,
QLabel,
QHBoxLayout,
QVBoxLayout,
QListWidget,
QAbstractItemView,
)
from qgis.PyQt.QtGui import QFont
from qgis.PyQt.QtCore import Qt, QSize, pyqtSignal
class ListMultiSelectWidget(QGroupBox):
"""Widget to show two parallel lists and move elements between the two
usage from code:
self.myWidget = ListMultiSelectWidget(title='myTitle')
self.myLayout.insertWidget(1, self.myWidget)
usage from designer:
insert a QGroupBox in your UI file
optionally give a title to the QGroupBox
promote it to ListMultiSelectWidget
"""
selection_changed = pyqtSignal()
def __init__(self, parent=None, title=None):
QGroupBox.__init__(self)
self.setTitle(title)
self.selected_widget = None
self.deselected_widget = None
self._setupUI()
# connect actions
self.select_all_btn.clicked.connect(self._select_all)
self.deselect_all_btn.clicked.connect(self._deselect_all)
self.select_btn.clicked.connect(self._select)
self.deselect_btn.clicked.connect(self._deselect)
self.deselected_widget.itemDoubleClicked.connect(self._select)
self.selected_widget.itemDoubleClicked.connect(self._deselect)
def get_selected_items(self):
"""
:return list with all the selected items text
"""
return self._get_items(self.selected_widget)
def get_deselected_items(self):
"""
:return list with all the deselected items text
"""
return self._get_items(self.deselected_widget)
def add_selected_items(self, items):
"""
:param items list of strings to be added in the selected list
"""
self._add_items(self.selected_widget, items)
def add_deselected_items(self, items):
"""
:param items list of strings to be added in the deselected list
"""
self._add_items(self.deselected_widget, items)
def set_selected_items(self, items):
"""
:param items list of strings to be set as the selected list
"""
self._set_items(self.selected_widget, items)
def set_deselected_items(self, items):
"""
:param items list of strings to be set as the deselected list
"""
self._set_items(self.deselected_widget, items)
def clear(self):
"""
removes all items from selected and deselected
"""
self.set_selected_items([])
self.set_deselected_items([])
def addItem(self, item):
"""
This is for Processing
:param item: string to be added in the deselected list
"""
self.add_deselected_items([item])
def addItems(self, items):
"""
This is for Processing
:param items: list of strings to be added in the deselected list
"""
self.add_deselected_items(items)
def _get_items(self, widget):
for i in range(widget.count()):
yield widget.item(i).text()
def _set_items(self, widget, items):
widget.clear()
self._add_items(widget, items)
def _add_items(self, widget, items):
widget.addItems(items)
def _select_all(self):
self.deselected_widget.selectAll()
self._do_move(self.deselected_widget, self.selected_widget)
def _deselect_all(self):
self.selected_widget.selectAll()
self._do_move(self.selected_widget, self.deselected_widget)
def _select(self):
self._do_move(self.deselected_widget, self.selected_widget)
def _deselect(self):
self._do_move(self.selected_widget, self.deselected_widget)
def _do_move(self, fromList, toList):
for item in fromList.selectedItems():
prev_from_item = fromList.item(fromList.row(item) - 1)
toList.addItem(fromList.takeItem(fromList.row(item)))
fromList.scrollToItem(prev_from_item)
self.selection_changed.emit()
def _setupUI(self):
self.setSizePolicy(QSizePolicy.Policy.Preferred, QSizePolicy.Policy.Preferred)
self.setMinimumHeight(180)
self.main_horizontal_layout = QHBoxLayout(self)
italic_font = QFont()
italic_font.setItalic(True)
# deselected widget
self.deselected_widget = QListWidget(self)
self._set_list_widget_defaults(self.deselected_widget)
deselected_label = QLabel()
deselected_label.setText("Deselected")
deselected_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
deselected_label.setFont(italic_font)
deselected_v_layout = QVBoxLayout()
deselected_v_layout.addWidget(deselected_label)
deselected_v_layout.addWidget(self.deselected_widget)
# selected widget
self.selected_widget = QListWidget(self)
self._set_list_widget_defaults(self.selected_widget)
selected_label = QLabel()
selected_label.setText("Selected")
selected_label.setAlignment(Qt.AlignmentFlag.AlignCenter)
selected_label.setFont(italic_font)
selected_v_layout = QVBoxLayout()
selected_v_layout.addWidget(selected_label)
selected_v_layout.addWidget(self.selected_widget)
# buttons
self.buttons_vertical_layout = QVBoxLayout()
self.buttons_vertical_layout.setContentsMargins(0, -1, 0, -1)
self.select_all_btn = SmallQPushButton(">>")
self.deselect_all_btn = SmallQPushButton("<<")
self.select_btn = SmallQPushButton(">")
self.deselect_btn = SmallQPushButton("<")
self.select_btn.setToolTip("Add the selected items")
self.deselect_btn.setToolTip("Remove the selected items")
self.select_all_btn.setToolTip("Add all")
self.deselect_all_btn.setToolTip("Remove all")
# add buttons
spacer_label = QLabel() # pragmatic way to create a spacer with
# the same height of the labels on top
# of the lists, in order to align the
# buttons with the lists.
self.buttons_vertical_layout.addWidget(spacer_label)
self.buttons_vertical_layout.addWidget(self.select_btn)
self.buttons_vertical_layout.addWidget(self.deselect_btn)
self.buttons_vertical_layout.addWidget(self.select_all_btn)
self.buttons_vertical_layout.addWidget(self.deselect_all_btn)
# add sub widgets
self.main_horizontal_layout.addLayout(deselected_v_layout)
self.main_horizontal_layout.addLayout(self.buttons_vertical_layout)
self.main_horizontal_layout.addLayout(selected_v_layout)
def _set_list_widget_defaults(self, widget):
widget.setAlternatingRowColors(True)
widget.setSortingEnabled(True)
widget.setDragEnabled(True)
widget.setDragDropMode(QAbstractItemView.DragDropMode.DragDrop)
widget.setDragDropOverwriteMode(False)
widget.setDefaultDropAction(Qt.DropAction.MoveAction)
widget.setSelectionMode(QAbstractItemView.SelectionMode.MultiSelection)
class SmallQPushButton(QPushButton):
def __init__(self, text):
QPushButton.__init__(self)
self.setText(text)
buttons_size_policy = QSizePolicy(
QSizePolicy.Policy.Fixed, QSizePolicy.Policy.Fixed
)
self.setSizePolicy(buttons_size_policy)
self.setMaximumSize(QSize(30, 30))
|
