# -*- coding: utf-8 -*- # pylint: disable=invalid-name,missing-class-docstring,missing-function-docstring """ 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 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. """ import math from qtpy.QtCore import QRect, Qt, QTimer # pylint: disable=no-name-in-module from qtpy.QtGui import QColor, QPainter from qtpy.QtWidgets import QWidget # pylint: disable=no-name-in-module class QtWaitingSpinner(QWidget): # pylint: disable=too-many-instance-attributes,too-many-public-methods def __init__(self, parent, centerOnParent=True, disableParentWhenSpinning=False, modality=Qt.NonModal): super().__init__(parent=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._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): # pylint: disable=unused-argument 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 ) painter.setBrush(color) painter.drawRoundedRect( QRect(0, -self._lineWidth / 2, self._lineLength, self._lineWidth), 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 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 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 = (self._innerRadius + self._lineLength) * 2 self.setFixedSize(size, size) def updateTimer(self): self._timer.setInterval(1000 / (self._numberOfLines * self._revolutionsPerSecond)) def updatePosition(self): if self.parentWidget() and self._centerOnParent: self.move( self.parentWidget().width() / 2 - self.width() / 2, self.parentWidget().height() / 2 - self.height() / 2 ) @staticmethod def lineCountDistanceFromPrimary(current, primary, totalNrOfLines): distance = primary - current if distance < 0: distance += totalNrOfLines return distance @staticmethod def currentLineColor(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 class NavigatorSpinner(QtWaitingSpinner): # pylint: disable=missing-class-docstring def __init__(self, parent, total_width=20): super().__init__(parent=parent) # Based on anaconda logo proportions r0 = 4.68 w0 = 2.32 radius = total_width / (((2 * w0) / r0) + 2) ring = radius * w0 / r0 # Set custom configuration self.setInnerRadius(radius) self.setLineLength(ring) self.setLineWidth(ring) self.setNumberOfLines(90) self.setColor(QColor('#43B02A')) self.setRevolutionsPerSecond(0.50) self.setRoundness(100.0) if __name__ == '__main__': from anaconda_navigator.utils.qthelpers import qapplication app = qapplication() widget = NavigatorSpinner(None) widget.start() widget.show() app.exec_()