本程序由PyQt4官方demo升级而来，各指针会随着系统时间变化而转动。另加入了秒针和圆盘。
代码如下：
代码语言：javascript复制#!/usr/bin/env python
from PyQt5 import QtCore, QtGui,QtWidgets
class AnalogClock(QtWidgets.QWidget):
hourHand = QtGui.QPolygon([
QtCore.QPoint(10, 8),
QtCore.QPoint(-10, 8),
QtCore.QPoint(0, -60)
])
minuteHand = QtGui.QPolygon([
QtCore.QPoint(8, 8),
QtCore.QPoint(-8, 8),
QtCore.QPoint(0, -70)
])
secondHand = QtGui.QPolygon([
QtCore.QPoint(4, 8),
QtCore.QPoint(-4, 8),
QtCore.QPoint(0, -90)
])
hourColor = QtGui.QColor(255, 0, 0)
minuteColor = QtGui.QColor(0, 255, 0)
secondColor = QtGui.QColor(0, 0, 255) def __init__(self, parent=None):
super(AnalogClock, self).__init__(parent)
timer = QtCore.QTimer(self)
timer.timeout.connect(self.update)
timer.start(1000) # 每1000ms 调用self.update, self.update会调用self.paintEvent
self.setWindowTitle("Analog Clock")
self.resize(200, 200)
def paintEvent(self, event):
side = min(self.width(), self.height())
time = QtCore.QTime.currentTime()#获取系统当前时间
painter = QtGui.QPainter(self)
painter.setRenderHint(QtGui.QPainter.Antialiasing)#抗锯齿
painter.translate(self.width() / 2, self.height() / 2)
painter.scale(side / 200.0, side / 200.0)
painter.setPen(QtGui.QColor(0, 0, 0))
painter.drawEllipse(-100,-100,200,200)#画圆。参数是外接矩形左上点和长宽
#painter.drawEllipse(-10,-10,20,20)
painter.setPen(AnalogClock.hourColor)
for i in range(12): #整点刻度
painter.drawLine(88, 0, 96, 0)
painter.rotate(30.0)
painter.setPen(AnalogClock.minuteColor)
for j in range(60): #小刻度
if (j % 5) != 0:
painter.drawLine(92, 0, 96, 0)
painter.rotate(6.0)
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(AnalogClock.hourColor)
painter.save()
painter.rotate(30.0 * ((time.hour() time.minute() / 60.0)))
painter.drawConvexPolygon(AnalogClock.hourHand)
painter.restore()
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(AnalogClock.minuteColor)
painter.save()
painter.rotate(6.0 * (time.minute() time.second() / 60.0))
painter.drawConvexPolygon(AnalogClock.minuteHand)
painter.restore()
painter.setPen(QtCore.Qt.NoPen)
painter.setBrush(AnalogClock.secondColor)
painter.save()
painter.rotate(6.0 * time.second() )
painter.drawConvexPolygon(AnalogClock.secondHand)
painter.restore()
painter.setPen(QtGui.QColor(0, 0, 0))
painter.drawEllipse(-5,-5,10,10)#画圆。参数是外接矩形左上点和长宽if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
clock = AnalogClock()
clock.show()
sys.exit(app.exec_())
