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【

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 wxpython
Usage
=====
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 wx
import 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()

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。