用PyQt实现透明桌面时钟小部件!

下面是脚本之家 jb51.cc 通过网络收集整理的代码片段。

脚本之家小编现在分享给大家，也给大家做个参考。

#coding=utf-8
'''
Created on 2012-4-6
 
@author: 大孟
'''
 
import sys
from PyQt4 import  QtGui,QtCore 
from PyQt4.QtCore import Qt
from PyQt4.QtCore import QPoint
from PyQt4.QtCore import QTimer
from PyQt4.QtCore import QTime
from PyQt4.QtGui import QPainter
from PyQt4.QtGui import QColor
from PyQt4.QtGui import QPolygon
from PyQt4.QtCore import SIGNAL as signal
 
 
class Clock(QtGui.QWidget):
    '''
    classdocs
    '''
 
 
    def __init__(self):
        '''
        Constructor
        '''
         
        super(Clock,self).__init__() 
         
        self.hourColor=QColor(127,127);
        self.minuteColor=QColor(0,127,191)
        self.secondColor=QColor(127,120)
        self.initUI()
        self.timer = QTimer()
        self.timer.timeout.connect(self.update)
        self.timer.start(30)
        self.show()
         
    def handChange(self):   
         
        self.side = min(self.width(),self.height())
        self.hand=(max(self.side/200,4),max(self.side/100,8),max(self.side/40,30))
        self.hourHand=QPolygon([QPoint(self.hand[0],self.hand[1]),QPoint(-self.hand[0],QPoint(0,-self.hand[2])])
        self.minuteHand=QPolygon([QPoint(self.hand[0],-self.hand[2]*2)])
        self.secondHand=QPolygon([QPoint(self.hand[0],-self.hand[2]*3)])
     
    def set_transparency(self,enabled):
        if enabled:
            self.setAutoFillBackground(False)
        else:
            self.setAttribute(Qt.WA_NoSystemBackground,False)
        #下面这种方式好像不行
#        pal=QtGui.QPalette()
#        pal.setColor(QtGui.QPalette.Background,QColor(127,10,120))
#        self.setPalette(pal)
        self.setAttribute(Qt.WA_TranslucentBackground,enabled)
        self.repaint()
    
    def initUI(self):     
  
        self.setGeometry(300,300,200)
        self.setWindowTitle('Clock')
        self.handChange()
        self.rightButton=False
        # 下面两个配合实现窗体透明和置顶
        sizeGrip=QtGui.QSizeGrip(self)
        self.setWindowFlags(Qt.FramelessWindowHint|Qt.WindowStaysOnTopHint|Qt.SubWindow )
        #self.setMouseTracking(True);
        self.trans=True
 
        self.set_transparency(True)
 
        quitAction = QtGui.QAction(QtGui.QIcon('quit.png'),'&Quit',self)
        self.connect(quitAction,signal("triggered()"),QtGui.qApp.quit)
        backAction = QtGui.QAction( '&Back',self)
        self.connect(backAction,self.backClicked)
        self.popMenu= QtGui.QMenu()
        self.popMenu.addAction(quitAction)
        self.popMenu.addAction(backAction)
   
         
    def resizeEvent(self,e): 
        self.handChange()
         
    def backClicked(self):
        if self.trans == True :
            self.trans = False 
            self.set_transparency(False)
        else:
            self.trans = True
            self.set_transparency(True)
         
    def mouseReleaseEvent(self,e):
        if self.rightButton == True:
            self.rightButton=False
            self.popMenu.popup(e.globalPos())
 
    def mouseMoveEvent(self,e):
        if e.buttons() & Qt.LeftButton:
            self.move(e.globalPos()-self.dragPos)
            e.accept()
    def mousePressEvent(self,e):
       
        if e.button() == Qt.LeftButton:
            self.dragPos=e.globalPos()-self.frameGeometry().topLeft()
            e.accept()
        if e.button() == Qt.RightButton and self.rightButton == False:
            self.rightButton=True
     
    def paintEvent(self,e):
        time = QTime.currentTime()
        qp = QPainter()
 
        qp.begin(self)
        #qp.setRenderHint(QPainter.Antialiasing)  # 开启这个抗锯齿,会很占cpu的!
        qp.translate(self.width() / 2,self.height() / 2)
        qp.scale(self.side / 200.0,self.side / 200.0)
  
        qp.setPen(QtCore.Qt.NoPen)
        qp.setBrush(self.hourColor)
        qp.save()
        qp.rotate(30.0 * ((time.hour() + time.minute()/ 60.0)))
        qp.drawConvexPolygon(self.hourHand)
        qp.restore()
         
        qp.setPen(self.hourColor)
        for i in range(12):
            qp.drawLine(88,96,0)
            qp.rotate(30.0)
         
        qp.setPen(QtCore.Qt.NoPen)
        qp.setBrush(self.minuteColor)
        qp.save()
         
        qp.rotate(6.0 * ((time.minute() + (time.second()+time.msec()/1000.0) / 60.0)))
        qp.drawConvexPolygon(self.minuteHand)
        qp.restore()
         
         
        qp.setPen(self.minuteColor)
        for i in range(60):
            if (i % 5) is not 0:
                qp.drawLine(92,0)
            qp.rotate(6.0)
         
        qp.setPen(QtCore.Qt.NoPen)
        qp.setBrush(self.secondColor)
        qp.save()
        qp.rotate(6.0*(time.second()+time.msec()/1000.0))
        qp.drawConvexPolygon(self.secondHand)
        qp.restore()
        qp.end()
if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    clock = Clock()
    sys.exit(app.exec_())

以上是脚本之家(jb51.cc)为你收集整理的全部代码内容，希望文章能够帮你解决所遇到的程序开发问题。

如果觉得脚本之家网站内容还不错，欢迎将脚本之家网站推荐给程序员好友。

（编辑：安卓应用网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!