wxPython实现带颜色的进度条

本文实例为大家分享了wxPython实现带颜色进度条的具体代码，供大家参考，具体内容如下

【问题描述】

1、在使用wxpython创建进度条时遇到如下问题，使用SetForegroundColour和SetBackgrounColour指令在Win7下不生效，即无法改变进度条的颜色及其背景颜色。

2、查阅资料发现wx.lib.agw.pygauge可以实现进度条颜色的修改（具体指令请参考pygauge说明文档），但其显示效果为平面较差（如下图）：

图1-1 pygauge制作的进度条

期望实现的进度条效果如下：

图1-2 期望效果图

【程序代码】

# --------------------------------------------------------------------------------- ## GAUGE wxPython ## Jin Jianchao, @ 25 Oct 2013# Mail: jianchaojin@gmail.com## End Of Comments# --------------------------------------------------------------------------------- # """Description===========Draw color gauge with wxpythonUsage=====Usage example::  import wx  import Gauge  class MyFrame(wx.Frame):    def __init__(self, parent):      wx.Frame.__init__(self, parent, -1, "ColourGauge Demo")      panel = wx.Panel(self)            gauge1 = Gauge.ColourGauge(panel, -1, size=(100, 25))      gauge1.setPercent(0.8)      gauge1.setBarColour(wx.RED)      gauge1.setBackgroundColour(wx.WHITE)            gauge2 = Gauge.ColourGauge(panel, -1, size=(200, 50))      gauge2.setPercent(0.9)      gauge2.setBarColour(wx.RED)      gauge2.setBackgroundColour(wx.BLUE)      sizer = wx.BoxSizer(wx.VERTICAL)      sizer.Add(gauge1, 0, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 20)      sizer.Add(gauge2, 0, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 20)          panel.SetSizer(sizer)      sizer.Layout()  # our normal wxApp-derived class, as usual  app = wx.App(0)  frame = MyFrame(None)  app.SetTopWindow(frame)  frame.Show()  app.MainLoop()""" import wximport wx.lib.fancytext as fancytext class ColourGauge(wx.Panel):    def __init__(self, parent,id, pos=wx.DefaultPosition, size=wx.DefaultSize):    wx.Panel.__init__(self, id=id, parent=parent, pos=pos, size=size, style=wx.TAB_TRAVERSAL)    # creat Gauge    self.gauge = Gauge(self, id=-1, size=size)    self.SetAutoLayout(True)    lc = wx.LayoutConstraints()    lc.top.SameAs(self, wx.Top, 0) #AsIs()    lc.left.AsIs()    lc.height.AsIs()    lc.right.SameAs(self, wx.Right, 0)    self.gauge.SetConstraints(lc)    def setPercent(self, percent):    self.gauge.setPercent(percent)      def setBackgroundColour(self, colour):    self.gauge.SetBackgroundColour(colour)      def setBarColour(self, colour):    self.gauge.color = colour      def getBarColour(self):     return self.gauge.color    def setStep(self,step):    self.gauge.step=step      def makeStep(self):    if self.gauge.percent>=1.: return    self.gauge.percent+=self.gauge.step    if self.gauge.percent>1.:      self.gauge.percent=1.    self.Refresh()    self.Update()    class Gauge(wx.Control):  default_color = "GREEN" # "MAGENTA","BLUE" # "GREEN" "RED" "YELLOW"  def __init__(self, parent,id,pos=wx.DefaultPosition,size=wx.DefaultSize):    wx.Control.__init__(self, parent, id, pos, size)    self.SetBackgroundColour(wx.WHITE)    self.color= Gauge.default_color    self.percent = 0.0    self.step = 0.0    wx.EVT_PAINT(self, self.OnPaint)   def OnPaint(self, evt):    dc = wx.PaintDC(self)    dc.Clear()    dc.BeginDrawing()     dc.SetPen( wx.Pen(self.color,0) )    dc.SetBrush( wx.Brush(self.color) )    w,h = self.GetSizeTuple()    dc.DrawRectangleRect((0,0,w*self.percent,h))    percentStr= "%d%%"% int(self.percent*100)    tx, ty = fancytext.getExtent(percentStr, dc)    dc.DrawText(percentStr, w/2-tx/2, h/2-ty/2)     dc.EndDrawing()      def setPercent(self,percent):    if percent <0 or percent >1.:      return    self.percent = percent  def setColor(self,color):    self.color = color  def getColor(self):     return self.color    def setStep(self,step):    self.step=step      def makeStep(self):    if self.percent>=1.: return    self.percent+=self.step    if self.percent>1.:      self.percent=1.    self.gauge.Refresh()    self.gauge.Update()