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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
# Copyright (C) 2015-2017 Damon Lynch <damonlynch@gmail.com>
# This file is part of Rapid Photo Downloader.
#
# Rapid Photo Downloader 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.
#
# Rapid Photo Downloader 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 Rapid Photo Downloader. If not,
# see <http://www.gnu.org/licenses/>.
__author__ = 'Damon Lynch'
__copyright__ = "Copyright 2015-2017, Damon Lynch"
from typing import List, Dict
from collections import namedtuple
from gettext import gettext as _
from PyQt5.QtWidgets import (
QStyleOptionFrame, QStyle, QStylePainter, QWidget, QLabel, QListWidget, QProxyStyle,
QStyleOption, QDialogButtonBox
)
from PyQt5.QtGui import QFontMetrics, QFont, QPainter
from PyQt5.QtCore import QSize, Qt
class RowTracker:
r"""
Simple class to map model rows to ids and vice versa, used in
table and list views.
>>> r = RowTracker()
>>> r[0] = 100
>>> r
{0: 100} {100: 0}
>>> r[1] = 110
>>> r[2] = 120
>>> len(r)
3
>>> r.insert_row(1, 105)
>>> r[1]
105
>>> r[2]
110
>>> len(r)
4
>>> 1 in r
True
>>> 3 in r
True
>>> 4 in r
False
>>> r.remove_rows(1)
[105]
>>> len(r)
3
>>> r[0]
100
>>> r[1]
110
>>> r.remove_rows(100)
[]
>>> len(r)
3
>>> r.insert_row(0, 90)
>>> r[0]
90
>>> r[1]
100
"""
def __init__(self) -> None:
self.row_to_id = {} # type: Dict[int, int]
self.id_to_row = {} # type: Dict[int, int]
def __getitem__(self, row) -> int:
return self.row_to_id[row]
def __setitem__(self, row, id_value) -> None:
self.row_to_id[row] = id_value
self.id_to_row[id_value] = row
def __len__(self) -> int:
return len(self.row_to_id)
def __contains__(self, row) -> bool:
return row in self.row_to_id
def __delitem__(self, row) -> None:
id_value = self.row_to_id[row]
del self.row_to_id[row]
del self.id_to_row[id_value]
def __repr__(self) -> str:
return '%r %r' % (self.row_to_id, self.id_to_row)
def __str__(self) -> str:
return 'Row to id: %r\nId to row: %r' % (self.row_to_id, self.id_to_row)
def row(self, id_value) -> int:
"""
:param id_value: the ID, e.g. scan_id, uid, row_id
:return: the row associated with the ID
"""
return self.id_to_row[id_value]
def insert_row(self, position: int, id_value) -> List:
"""
Inserts row into the model at the given position, assigning
the id_id_value.
:param position: the position of the first row to insert
:param id_value: the id to be associated with the new row
"""
ids = [id_value for row, id_value in self.row_to_id.items() if row < position]
ids_to_move = [id_value for row, id_value in self.row_to_id.items() if row >= position]
ids.append(id_value)
ids.extend(ids_to_move)
self.row_to_id = dict(enumerate(ids))
self.id_to_row = dict(((y, x) for x, y in list(enumerate(ids))))
def remove_rows(self, position, rows=1) -> List:
"""
:param position: the position of the first row to remove
:param rows: how many rows to remove
:return: the ids of those rows which were removed
"""
final_pos = position + rows - 1
ids_to_keep = [id_value for row, id_value in self.row_to_id.items() if
row < position or row > final_pos]
ids_to_remove = [idValue for row, idValue in self.row_to_id.items() if
row >= position and row <= final_pos]
self.row_to_id = dict(enumerate(ids_to_keep))
self.id_to_row = dict(((y, x) for x, y in list(enumerate(ids_to_keep))))
return ids_to_remove
ThumbnailDataForProximity = namedtuple(
'ThumbnailDataForProximity', 'uid, ctime, file_type, previously_downloaded'
)
class QFramedWidget(QWidget):
"""
Draw a Frame around the widget in the style of the application.
Use this instead of using a stylesheet to draw a widget's border.
"""
def paintEvent(self, *opts):
painter = QStylePainter(self)
option = QStyleOptionFrame()
option.initFrom(self)
painter.drawPrimitive(QStyle.PE_Frame, option)
super().paintEvent(*opts)
class QFramedLabel(QLabel):
"""
Draw a Frame around the label in the style of the application.
Use this instead of using a stylesheet to draw a label's border.
"""
def paintEvent(self, *opts):
painter = QStylePainter(self)
option = QStyleOptionFrame()
option.initFrom(self)
painter.drawPrimitive(QStyle.PE_Frame, option)
super().paintEvent(*opts)
class ProxyStyleNoFocusRectangle(QProxyStyle):
"""
Remove the focus rectangle from a widget
"""
def drawPrimitive(self, element: QStyle.PrimitiveElement,
option: QStyleOption, painter: QPainter,
widget: QWidget) -> None:
if QStyle.PE_FrameFocusRect == element:
pass
else:
super().drawPrimitive(element, option, painter, widget)
class QNarrowListWidget(QListWidget):
"""
Create a list widget that is not by default enormously wide.
See http://stackoverflow.com/questions/6337589/qlistwidget-adjust-size-to-content
"""
def __init__(self, minimum_rows: int=0,
minimum_width: int=0,
no_focus_recentangle: bool=False,
parent=None) -> None:
super().__init__(parent=parent)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
self._minimum_rows = minimum_rows
self._minimum_width = minimum_width
if no_focus_recentangle:
self.setStyle(ProxyStyleNoFocusRectangle())
@property
def minimum_width(self) -> int:
return self._minimum_width
@minimum_width.setter
def minimum_width(self, width: int) -> None:
self._minimum_width = width
self.updateGeometry()
def sizeHint(self):
s = QSize()
if self._minimum_rows:
s.setHeight(self.count() * self.sizeHintForRow(0) + self.frameWidth() * 2)
else:
s.setHeight(super().sizeHint().height())
s.setWidth(max(self.sizeHintForColumn(0) + self.frameWidth() * 2, self._minimum_width))
return s
def standardIconSize() -> QSize:
size = QFontMetrics(QFont()).height() * 6
return QSize(size, size)
def translateButtons(buttonBox: QDialogButtonBox) -> None:
buttons = (
(QDialogButtonBox.Ok, _('&OK')),
(QDialogButtonBox.Close, _('&Close') ),
(QDialogButtonBox.Cancel, _('&Cancel')),
(QDialogButtonBox.Save, _('&Save')),
(QDialogButtonBox.Help, _('&Help')),
(QDialogButtonBox.RestoreDefaults, _('Restore Defaults')),
(QDialogButtonBox.Yes, _('&Yes')),
(QDialogButtonBox.No, _('&No')),
)
for role, text in buttons:
button = buttonBox.button(role)
if button:
button.setText(text)
|
