/
waitingspinner.py
254 lines (201 loc) · 8.56 KB
/
waitingspinner.py
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
253
254
# -*- coding: utf-8 -*-
"""
The MIT License (MIT)
Copyright (c) 2012-2014 Alexander Turkin
Copyright (c) 2014 William Hallatt
Copyright (c) 2015 Jacob Dawid
Copyright (c) 2016 Luca Weiss
Copyright (c) 2017- Spyder Project Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
See NOTICE.txt in the Spyder repository root for more detailed information.
Minimally adapted from waitingspinnerwidget.py of the
`QtWaitingSpinner Python Fork <https://github.com/z3ntu/QtWaitingSpinner>`_.
A port of `QtWaitingSpinner <https://github.com/snowwlex/QtWaitingSpinner>`_.
"""
import math
from qtpy.QtCore import QRect, Qt, QTimer
from qtpy.QtGui import QColor, QPainter
from qtpy.QtWidgets import QWidget
class QWaitingSpinner(QWidget):
def __init__(self, parent, centerOnParent=True,
disableParentWhenSpinning=False, modality=Qt.NonModal):
# super().__init__(parent)
QWidget.__init__(self, parent)
self._centerOnParent = centerOnParent
self._disableParentWhenSpinning = disableParentWhenSpinning
# WAS IN initialize()
self._color = QColor(Qt.black)
self._roundness = 100.0
self._minimumTrailOpacity = 3.14159265358979323846
self._trailFadePercentage = 80.0
self._trailSizeDecreasing = False
self._revolutionsPerSecond = 1.57079632679489661923
self._numberOfLines = 20
self._lineLength = 10
self._lineWidth = 2
self._innerRadius = 10
self._currentCounter = 0
self._isSpinning = False
self._timer = QTimer(self)
self._timer.timeout.connect(self.rotate)
self.updateSize()
self.updateTimer()
self.hide()
# END initialize()
self.setWindowModality(modality)
self.setAttribute(Qt.WA_TranslucentBackground)
def paintEvent(self, QPaintEvent):
self.updatePosition()
painter = QPainter(self)
painter.fillRect(self.rect(), Qt.transparent)
painter.setRenderHint(QPainter.Antialiasing, True)
if self._currentCounter >= self._numberOfLines:
self._currentCounter = 0
painter.setPen(Qt.NoPen)
for i in range(0, self._numberOfLines):
painter.save()
painter.translate(self._innerRadius + self._lineLength, self._innerRadius + self._lineLength)
rotateAngle = float(360 * i) / float(self._numberOfLines)
painter.rotate(rotateAngle)
painter.translate(self._innerRadius, 0)
distance = self.lineCountDistanceFromPrimary(i, self._currentCounter, self._numberOfLines)
color = self.currentLineColor(distance, self._numberOfLines, self._trailFadePercentage,
self._minimumTrailOpacity, self._color)
# Compute the scaling factor to apply to the size and thickness
# of the lines in the trail.
if self._trailSizeDecreasing:
sf = (self._numberOfLines - distance) / self._numberOfLines
else:
sf = 1
painter.setBrush(color)
rect = QRect(0, round(-self._lineWidth / 2),
round(sf * self._lineLength),
round(sf * self._lineWidth))
painter.drawRoundedRect(
rect, self._roundness, self._roundness, Qt.RelativeSize)
painter.restore()
def start(self):
self.updatePosition()
self._isSpinning = True
self.show()
if self.parentWidget and self._disableParentWhenSpinning:
self.parentWidget().setEnabled(False)
if not self._timer.isActive():
self._timer.start()
self._currentCounter = 0
def stop(self):
self._isSpinning = False
self.hide()
if self.parentWidget() and self._disableParentWhenSpinning:
self.parentWidget().setEnabled(True)
if self._timer.isActive():
self._timer.stop()
self._currentCounter = 0
def setNumberOfLines(self, lines):
self._numberOfLines = lines
self._currentCounter = 0
self.updateTimer()
def setLineLength(self, length):
self._lineLength = length
self.updateSize()
def setLineWidth(self, width):
self._lineWidth = width
self.updateSize()
def setInnerRadius(self, radius):
self._innerRadius = radius
self.updateSize()
def color(self):
return self._color
def roundness(self):
return self._roundness
def minimumTrailOpacity(self):
return self._minimumTrailOpacity
def trailFadePercentage(self):
return self._trailFadePercentage
def revolutionsPersSecond(self):
return self._revolutionsPerSecond
def numberOfLines(self):
return self._numberOfLines
def lineLength(self):
return self._lineLength
def isTrailSizeDecreasing(self):
"""
Return whether the length and thickness of the trailing lines
are decreasing.
"""
return self._trailSizeDecreasing
def lineWidth(self):
return self._lineWidth
def innerRadius(self):
return self._innerRadius
def isSpinning(self):
return self._isSpinning
def setRoundness(self, roundness):
self._roundness = max(0.0, min(100.0, roundness))
def setColor(self, color=Qt.black):
self._color = QColor(color)
def setRevolutionsPerSecond(self, revolutionsPerSecond):
self._revolutionsPerSecond = revolutionsPerSecond
self.updateTimer()
def setTrailFadePercentage(self, trail):
self._trailFadePercentage = trail
def setTrailSizeDecreasing(self, value):
"""
Set whether the length and thickness of the trailing lines
are decreasing.
"""
self._trailSizeDecreasing = value
def setMinimumTrailOpacity(self, minimumTrailOpacity):
self._minimumTrailOpacity = minimumTrailOpacity
def rotate(self):
self._currentCounter += 1
if self._currentCounter >= self._numberOfLines:
self._currentCounter = 0
self.update()
def updateSize(self):
size = int((self._innerRadius + self._lineLength) * 2)
self.setFixedSize(size, size)
def updateTimer(self):
self._timer.setInterval(int(1000 / (self._numberOfLines *
self._revolutionsPerSecond)))
def updatePosition(self):
if self.parentWidget() and self._centerOnParent:
self.move(int(self.parentWidget().width() / 2 -
self.width() / 2),
int(self.parentWidget().height() / 2 -
self.height() / 2))
def lineCountDistanceFromPrimary(self, current, primary, totalNrOfLines):
distance = primary - current
if distance < 0:
distance += totalNrOfLines
return distance
def currentLineColor(self, countDistance, totalNrOfLines, trailFadePerc, minOpacity, colorinput):
color = QColor(colorinput)
if countDistance == 0:
return color
minAlphaF = minOpacity / 100.0
distanceThreshold = int(math.ceil((totalNrOfLines - 1) * trailFadePerc / 100.0))
if countDistance > distanceThreshold:
color.setAlphaF(minAlphaF)
else:
alphaDiff = color.alphaF() - minAlphaF
gradient = alphaDiff / float(distanceThreshold + 1)
resultAlpha = color.alphaF() - gradient * countDistance
# If alpha is out of bounds, clip it.
resultAlpha = min(1.0, max(0.0, resultAlpha))
color.setAlphaF(resultAlpha)
return color