# coding=utf8
import sys, pygame, math, random
from pygame.locals import *
from datetime import datetime, date, time
 
 
def print_text(font, x, y, text, color=(255,255,255)):
  imgtext = font.render(text, True, color)
  screen.blit(imgtext, (x,y))
 
def wrap_angle(angle):
  return abs(angle%360)
 
# main
pygame.init()
screen = pygame.display.set_mode((600,500))
pygame.display.set_caption("CLOCK")
font = pygame.font.Font(None, 36)
orange = 220,180,0
white = 255,255,255
yellow = 255,255,0
pink = 255,100,100
 
pos_x = 300
pos_y = 250
radius = 250
angle = 360
 
# repeating loop
while True:
  for event in pygame.event.get():
    if event.type == QUIT:
      sys.exit()
 
  keys = pygame.key.get_pressed()
  if keys[K_ESCAPE]:
    sys.exit()
 
  screen.fill((0,0,100))
 
  # draw circle
  pygame.draw.circle(screen, white, (pos_x,pos_y), radius, 6)
 
  # draw the clock number 1-12
  for n in range(1,13):
    angle = math.radians(n*(360/12)-90)
    x = math.cos(angle)*(radius-20)-10
    y = math.sin(angle)*(radius-20)-10
    print_text(font, pos_x+x, pos_y+y, str(n))
 
  # get the time of day
  today = datetime.today()
  hours = today.hour%12
  minutes = today.minute
  seconds = today.second
 
  # draw the hours hand
  hour_angle = wrap_angle(hours*(360/12)-90)
  hour_angle = math.radians(hour_angle)
  hour_x = math.cos(hour_angle)*(radius-80)
  hour_y = math.sin(hour_angle)*(radius-80)
  target = (pos_x+hour_x, pos_y+hour_y)
  pygame.draw.line(screen, pink, (pos_x,pos_y), target, 12)
 
  # draw the minutes hand
  min_angle = wrap_angle(minutes*(360/60)-90)
  min_angle = math.radians(min_angle)
  min_x = math.cos(min_angle)*(radius-60)
  min_y = math.sin(min_angle)*(radius-60)
  target = (pos_x+min_x, pos_y+min_y)
  pygame.draw.line(screen, orange, (pos_x,pos_y), target, 12)
 
  # draw the seconds hand
  sec_angle = wrap_angle(seconds*(360/60)-90)
  sec_angle = math.radians(sec_angle)
  sec_x = math.cos(sec_angle)*(radius-40)
  sec_y = math.sin(sec_angle)*(radius-40)
  target = (pos_x+sec_x, pos_y+sec_y)
  pygame.draw.line(screen, yellow, (pos_x,pos_y), target, 12)
 
  # draw the center
  pygame.draw.circle(screen, white, (pos_x,pos_y), 20)
 
  print_text(font, 0, 0, str(hours) + ":" + str(minutes) + ":" + str(seconds))
  pygame.display.update()

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, 0, 127);
    self.minuteColor=QColor(0, 127, 127, 191)
    self.secondColor=QColor(127, 127,0,120)
    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],self.hand[1]),QPoint(0,-self.hand[2])])
    self.minuteHand=QPolygon([QPoint(self.hand[0],self.hand[1]),QPoint(-self.hand[0],self.hand[1]),QPoint(0,-self.hand[2]*2)])
    self.secondHand=QPolygon([QPoint(self.hand[0],self.hand[1]),QPoint(-self.hand[0],self.hand[1]),QPoint(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, 127,10,120))
#    self.setPalette(pal) 
    self.setAttribute(Qt.WA_TranslucentBackground, enabled)
    self.repaint()

  def initUI(self):   

    self.setGeometry(300, 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,signal("triggered()"),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, 0, 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, 96, 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_())

import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class clock (QWidget):
  def __init__(self):
    QWidget.__init__(self,windowTitle="python clock")
    timer = QTimer(self)
    self.connect(timer, SIGNAL("timeout()"),self,SLOT("update()"))
    timer.start(1000)
    self.resize(200,200)
  def paintEvent(self,e):
    hourColorHand = QPolygon([QPoint(7,8),QPoint(-7,8),QPoint(0,-30)])
    minuteColorHand = QPolygon([QPoint(7,8),QPoint(-7,8),QPoint(0,-70)])
    secondColorHand = QPolygon([QPoint(3,8),QPoint(-3,8),QPoint(0,-90)])
    hourColor = QColor(127,0,127)
    minuteColor = QColor(0,127,127,191)
    secondColor = QColor(0,100,100,100)
    painter = QPainter(self);
    side = min(self.width(),self.height())
    atime =QTime.currentTime()
    painter.setRenderHint(QPainter.Antialiasing)
    painter.translate(self.width()/2,self.height()/2)
    painter.scale(side/200,side/200)
    painter.setPen(Qt.NoPen)
    painter.setBrush(hourColor)
    painter.save()
    painter.rotate(30.0*(atime.hour() + atime.minute()/60.0))
    painter.drawConvexPolygon(hourColorHand)
    painter.restore()
    painter.setPen(hourColor)
    for i in range(0,12):
     painter.drawLine(88,0,96,0)
     painter.rotate(30.0)
    painter.setPen(Qt.NoPen)
    painter.setBrush(minuteColor)
    painter.save()
    painter.rotate(6.0*(atime.minute()+atime.second()/60.0))
    painter.drawConvexPolygon(minuteColorHand)
    painter.restore()
    painter.setPen(minuteColor)
    for i in range(0,60) :
     if (i%5)!=0 :
       painter.drawLine(92,0,96,0)
     painter.rotate(6.0)
    painter.setPen(Qt.NoPen)
    painter.setBrush(secondColor)
    painter.save()
    painter.rotate(6.0 * atime.second())
    painter.drawConvexPolygon(secondColorHand)
    painter.restore()
if __name__ == "__main__" :
   q = QApplication(sys.argv)
   s = clock()
   s.show()
   q.exec_()