There are probably issues, when the user tries to close the tab while the project is still loading. Can't test this now, because opening more than one tab doesn't even work...looper
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#!/usr/bin/env python
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# @custom_license
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#
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# Taken from https://github.com/mojocorp/QProgressIndicator with minor modifications
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# (use PyQt5 instead of PySide).
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#
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# Original license:
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# Author: Jared P. Sutton <jpsutton@gmail.com>
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# License: LGPL
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# Note: I've licensed this code as LGPL because it was a complete translation of the
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# code found here...
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# https://github.com/mojocorp/QProgressIndicator
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# Ignore formatting of 3rd party code for now.
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# pylint: skip-file
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import sys
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from PyQt5.QtCore import Qt
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from PyQt5 import QtCore
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from PyQt5 import QtGui
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from PyQt5 import QtWidgets
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class QProgressIndicator(QtWidgets.QWidget):
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m_angle = None
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m_timerId = None
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m_delay = None
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m_displayedWhenStopped = None
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m_color = None
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def __init__ (self, parent):
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# Call parent class constructor first
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super(QProgressIndicator, self).__init__(parent)
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# Initialize Qt Properties
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self.setProperties()
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# Intialize instance variables
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self.m_angle = 0
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self.m_timerId = -1
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self.m_delay = 40
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self.m_displayedWhenStopped = False
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self.m_color = Qt.black
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# Set size and focus policy
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self.setSizePolicy(QtWidgets.QSizePolicy.Fixed, QtWidgets.QSizePolicy.Fixed)
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self.setFocusPolicy(Qt.NoFocus)
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# Show the widget
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self.show()
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def animationDelay (self):
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return self.delay
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def isAnimated (self):
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return (self.m_timerId != -1)
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def isDisplayedWhenStopped (self):
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return self.displayedWhenStopped
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def getColor (self):
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return self.color
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def sizeHint (self):
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return QtCore.QSize(20, 20)
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def startAnimation (self):
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self.m_angle = 0
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if self.m_timerId == -1:
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self.m_timerId = self.startTimer(self.m_delay)
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def stopAnimation (self):
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if self.m_timerId != -1:
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self.killTimer(self.m_timerId)
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self.m_timerId = -1
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self.update()
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def setAnimationDelay (self, delay):
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if self.m_timerId != -1:
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self.killTimer(self.m_timerId)
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self.m_delay = delay
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if self.m_timerId != -1:
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self.m_timerId = self.startTimer(self.m_delay)
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def setDisplayedWhenStopped (self, state):
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self.displayedWhenStopped = state
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self.update()
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def setColor (self, color):
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self.m_color = color
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self.update()
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def timerEvent (self, event):
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self.m_angle = (self.m_angle + 30) % 360
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self.update()
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def paintEvent (self, event):
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if (not self.m_displayedWhenStopped) and (not self.isAnimated()):
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return
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width = min(self.width(), self.height())
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painter = QtGui.QPainter(self)
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painter.setRenderHint(QtGui.QPainter.Antialiasing)
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outerRadius = (width - 1) * 0.5
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innerRadius = (width - 1) * 0.5 * 0.38
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capsuleHeight = outerRadius - innerRadius
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capsuleWidth = capsuleHeight *.23 if (width > 32) else capsuleHeight *.35
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capsuleRadius = capsuleWidth / 2
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for i in range(0, 12):
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color = QtGui.QColor(self.m_color)
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if self.isAnimated():
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color.setAlphaF(1.0 - (i / 12.0))
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else:
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color.setAlphaF(0.2)
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painter.setPen(Qt.NoPen)
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painter.setBrush(color)
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painter.save()
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painter.translate(self.rect().center())
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painter.rotate(self.m_angle - (i * 30.0))
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painter.drawRoundedRect(capsuleWidth * -0.5, (innerRadius + capsuleHeight) * -1, capsuleWidth, capsuleHeight, capsuleRadius, capsuleRadius)
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painter.restore()
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def setProperties (self):
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self.delay = QtCore.pyqtProperty(int, self.animationDelay, self.setAnimationDelay)
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self.displayedWhenStopped = QtCore.pyqtProperty(bool, self.isDisplayedWhenStopped, self.setDisplayedWhenStopped)
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self.color = QtCore.pyqtProperty(QtGui.QColor, self.getColor, self.setColor)
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def TestProgressIndicator ():
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app = QtWidgets.QApplication(sys.argv)
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progress = QProgressIndicator(None)
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progress.setAnimationDelay(70)
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progress.startAnimation()
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# Execute the application
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sys.exit(app.exec_())
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if __name__ == "__main__":
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TestProgressIndicator()
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