PyQt实现钟表效果
注意:本程序在Python3.3+PyQt5测试通过
主要目的是为了锻炼使用Qt绘图的相关知识
""" Created on 2013-7-2 @author: badboy Email:lucky.haiyu@gmail.com QQ:43831266 """ from PyQt5.QtCore import * from PyQt5.QtGui import * from PyQt5.QtWidgets import * class clockForm(QWidget): def __init__(self,parent=None): super(clockForm,self).__init__(parent) self.setWindowTitle("Clock") self.timer=QTimer() #设置窗口计时器 self.timer.timeout.connect(self.update) self.timer.start(1000) def paintEvent(self,event): painter=QPainter(self) painter.setRenderHint(QPainter.Antialiasing) #设置表盘中的文字字体 font=QFont("Times",6) fm=QFontMetrics(font) fontRect=fm.boundingRect("99")#获取绘制字体的矩形范围 #分针坐标点 minPoints=[QPointF(50,25), QPointF(48,50), QPointF(52,50)] #时钟坐标点 hourPoints=[QPointF(50,35), QPointF(48,50), QPointF(52,50)] side=min(self.width(),self.height()) painter.setViewport((self.width()-side)/2,(self.height()-side)/2, side,side)#始终处于窗口中心位置显示 #设置QPainter的坐标系统,无论窗体大小如何变化, #窗体左上坐标为(0,0),右下坐标为(100,100), #因此窗体中心坐标为(50,50) painter.setWindow(0,0,100,100) #绘制表盘,使用环形渐变色 niceBlue=QColor(150,150,200) haloGrident=QRadialGradient(50,50,50,50,50) haloGrident.setColorAt(0.0,Qt.lightGray) haloGrident.setColorAt(0.5,Qt.darkGray) haloGrident.setColorAt(0.9,Qt.white) haloGrident.setColorAt(1.0,niceBlue) painter.setBrush(haloGrident) painter.setPen(QPen(Qt.darkGray,1)) painter.drawEllipse(0,0,100,100) transform=QTransform() #绘制时钟为0的字,以及刻度 painter.setPen(QPen(Qt.black,1.5)) fontRect.moveCenter(QPoint(50,10+fontRect.height()/2)) painter.setFont(font) painter.drawLine(50,2,50,8)# painter.drawText(QRectF(fontRect),Qt.AlignHCenter|Qt.AlignTop,"0") for i in range(1,12): transform.translate(50, 50) transform.rotate(30) transform.translate(-50,-50) painter.setWorldTransform(transform) painter.drawLine(50,2,50,8) painter.drawText(QRectF(fontRect),Qt.AlignHCenter|Qt.AlignTop,"%d" % i) transform.reset() #绘制分钟刻度线 painter.setPen(QPen(Qt.blue,1)) for i in range(1,60): transform.translate(50,50) transform.rotate(6) transform.translate(-50,-50) if i%5!=0: painter.setWorldTransform(transform) painter.drawLine(50,2,50,5) transform.reset() #获取当前时间 currentTime=QTime().currentTime() hour=currentTime.hour() if currentTime.hour()<12 else currentTime.hour()-12 minite=currentTime.minute() second=currentTime.second() #获取所需旋转角度 hour_angle=hour*30.0+(minite/60.0)*30.0 minite_angle=(minite/60.0)*360.0 second_angle=second*6.0 #时针 transform.translate(50,50) transform.rotate(hour_angle) transform.translate(-50,-50) painter.setWorldTransform(transform) painter.setPen(Qt.NoPen) painter.setBrush(QBrush(Qt.darkRed)) painter.drawPolygon(QPolygonF(hourPoints)) transform.reset() #分针 transform.translate(50,50) transform.rotate(minite_angle) transform.translate(-50,-50) painter.setWorldTransform(transform) painter.setBrush(QBrush(Qt.darkGreen)) painter.drawPolygon(QPolygonF(minPoints)) transform.reset() #秒针 transform.translate(50,50) transform.rotate(second_angle) transform.translate(-50,-50) painter.setWorldTransform(transform) painter.setPen(QPen(Qt.darkCyan,1)) painter.drawLine(50,50,50,20) if __name__=="__main__": import sys app=QApplication(sys.argv) form=clockForm() form.show() app.exec_()
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