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slide_switch.py
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slide_switch.py
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from pyqode.qt.QtCore import QObject
from pyqode.qt.QtGui import QPen
from pyqode.qt.QtGui import QBrush
from pyqode.qt.QtGui import QPalette
from pyqode.qt.QtGui import QAbstractButton
from pyqode.qt.QtGui import QPainter
from pyqode.qt.QtGui import QApplication
from pyqode.qt.QtCore import QRectF
from pyqode.qt.QtGui import QLinearGradient, QGradient
from pyqode.qt.QtCore import QPropertyAnimation
from pyqode.qt.QtCore import QEasingCurve
from pyqode.qt.QtCore import Qt, QSize
# from pyqode.qt.QtCore import Slot, pyqtProperty
import pyqode.qt.QtCore as QtCore
class QSlideSwitchPrivate(QObject):
def __init__(self, q):
QObject.__init__(self)
self._position = 0
self._sliderShape = QRectF()
self._gradient = QLinearGradient()
self._gradient.setSpread(QGradient.PadSpread)
self._qPointer = q
self.animation = QPropertyAnimation(self)
self.animation.setTargetObject(self)
self.animation.setPropertyName("position")
self.animation.setStartValue(0)
self.animation.setEndValue(1)
self.animation.setDuration(300)
self.animation.setEasingCurve(QEasingCurve.InOutExpo)
# self.position = QtCore.Property(self._position)
def __del__(self):
del self.animation
@QtCore.Property(float)
def position(self):
return self._position
@position.setter
def position(self, value):
self._position = value
self._qPointer.repaint()
def drawSlider(self, painter):
margin = 3
r = self._qPointer.rect().adjusted(0,0,-1,-1)
dx = (r.width() - self._sliderShape.width()) * self._position
sliderRect = self._sliderShape.translated(dx, 0)
painter.setPen(Qt.NoPen)
# basic settings
shadow = self._qPointer.palette().color(QPalette.Dark)
light = self._qPointer.palette().color(QPalette.Light)
button = self._qPointer.palette().color(QPalette.Button)
# draw background
# draw outer background
self._gradient.setColorAt(0, shadow.darker(130))
self._gradient.setColorAt(1, light.darker(130))
self._gradient.setStart(0, r.height())
self._gradient.setFinalStop(0, 0)
painter.setBrush(self._gradient)
painter.drawRoundedRect(r, 15, 15)
# draw background
# draw inner background
self._gradient.setColorAt(0, shadow.darker(140))
self._gradient.setColorAt(1, light.darker(160))
self._gradient.setStart(0, 0)
self._gradient.setFinalStop(0, r.height())
painter.setBrush(self._gradient)
painter.drawRoundedRect(r.adjusted(margin, margin, -margin, -margin), 15, 15)
# draw slider
self._gradient.setColorAt(0, button.darker(130))
self._gradient.setColorAt(1, button)
# draw outer slider
self._gradient.setStart(0, r.height())
self._gradient.setFinalStop(0, 0)
painter.setBrush(self._gradient)
painter.drawRoundedRect(sliderRect.adjusted(margin, margin, -margin, -margin), 10, 15)
# draw inner slider
self._gradient.setStart(0, 0)
self._gradient.setFinalStop(0, r.height())
painter.setBrush(self._gradient)
painter.drawRoundedRect(sliderRect.adjusted(2.5 * margin, 2.5 * margin, -2.5 * margin, - 2.5 * margin), 5, 15)
# draw text
if self.animation.state() == QPropertyAnimation.Running:
return #don't draw any text while animation is running
font = self._qPointer.font()
self._gradient.setColorAt(0, light)
self._gradient.setColorAt(1, shadow)
self._gradient.setStart(0, r.height() / 2.0 + font.pointSizeF())
self._gradient.setFinalStop(0, r.height() / 2.0 - font.pointSizeF())
painter.setFont(font)
painter.setPen(QPen(QBrush(self._gradient), 0))
if self._qPointer.isChecked():
painter.drawText(0, 0, r.width() / 2, r.height()-1, Qt.AlignCenter, "ON")
else:
painter.drawText( r.width() / 2, 0, r.width() / 2, r.height() - 1, Qt.AlignCenter, "OFF")
def updateSliderRect(self, size):
self._sliderShape.setWidth(size.width() / 2.0)
self._sliderShape.setHeight(size.height() - 1.0)
@QtCore.Slot(bool, name='animate')
def animate(self, checked):
self.animation.setDirection(QPropertyAnimation.Forward if checked else QPropertyAnimation.Backward)
self.animation.start()
class QSlideSwitch(QAbstractButton):
def __init__(self, parent=None):
QAbstractButton.__init__(self, parent)
self.d_ptr = QSlideSwitchPrivate(self)
self.clicked.connect(self.switch)
self.d_ptr.animation.finished.connect(self.update)
def switch(self):
self.d_ptr.animate(not self.isChecked())
def __del__(self):
del self.d_ptr
def sizeHint(self):
return QSize(48, 28)
def hitButton(self, point):
return self.rect().contains(point)
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
self.d_ptr.drawSlider(painter)
def resizeEvent(self, event):
self.d_ptr.updateSliderRect(event.size())
self.repaint()
# if __name__ == '__main__':
#
# import sys
# app = QApplication(sys.argv)
#
# switcher = QSlideSwitch()
# switcher.setCheckable(True)
# switcher.show()
#
# sys.exit(app.exec_())