wxPython Custom Gauge

# wxPython:
# experiment with a colorful gauge/progress-bar made from a label
# (note wx.Gauge() comes only in green)
# tested with Python24 and wxPython26     vegaseat     21feb2006

import wx

class MyPanel(wx.Panel):
    """
    class MyPanel creates a panel with a slider, a gauge/progress bar
    made from a label and a variable number of spaces
    """
    def __init__(self, parent, id):
        # create a panel
        wx.Panel.__init__(self, parent, id)
        self.SetBackgroundColour("white")

        # default id = -1 is used, initial value = 50, min value = 0, max value = 100
        self.slider1 = wx.Slider(self, -1, 50, 0, 100, (10, 10), (400, 50),
            wx.SL_HORIZONTAL | wx.SL_AUTOTICKS | wx.SL_LABELS)

        # set gauge to initial slider position
        self.pos1 = self.slider1.GetValue()

        # this label is used for a simple colorful gauge
        # str3 has 0 to 100 spaces, each space is one tickmark
        # you might have to factor that for different sizes
        str3 = " " * self.pos1
        self.label3 = wx.StaticText(self, -1, str3, (10, 80))
        self.label3.SetBackgroundColour("blue")
       
        # respond to changes in slider position ...
        self.slider1.Bind(wx.EVT_SLIDER, self.sliderUpdate)

    def sliderUpdate(self, event):
        # get the slider position
        self.pos1 = self.slider1.GetValue()
        
        # optionally change the color of the label-gauge
        if self.pos1 > 80:
            self.label3.SetBackgroundColour("red")
        else:
            self.label3.SetBackgroundColour("blue")

        # set the label-gauge position
        # str3 contains 0 to 100 spaces
        str3 = " " * self.pos1
        self.label3.SetLabel(str3)


app = wx.PySimpleApp()
# create a window/frame, no parent, -1 is default ID, title, size
frame = wx.Frame(None, -1, "test the label-gauge (drag slider)", size = (430, 150))
# call the derived class, -1 is default ID
MyPanel(frame,-1)
# show the frame
frame.Show(True)
# start the event loop
app.MainLoop()