94 lines
3.5 KiB
Python
94 lines
3.5 KiB
Python
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"""
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WxSlider Class: Extended wx.Slider supporting floating point values
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you should call Enable() after binding any event with this control
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"""
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__all__ = ['WxSlider']
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import wx
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class WxSlider(wx.Slider):
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def __init__(self, parent, id, value, minValue, maxValue,\
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pos=wx.DefaultPosition, size=wx.DefaultSize,\
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style=wx.SL_HORIZONTAL, validator=wx.DefaultValidator, name="slider", textSize=(40,20)):
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self.maxValue = maxValue
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self.minValue = minValue
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intVal = 100.0 / (self.maxValue - self.minValue) * (value - self.minValue)
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intMin = 0
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intMax = 100
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self.textValue = None
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self.updateCB = None
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if style & wx.SL_HORIZONTAL:
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newStyle = wx.SL_HORIZONTAL
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if style & wx.SL_LABELS:
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wx.StaticText(parent, -1, "%.2f"%minValue, (pos[0], pos[1]))
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strMaxValue = "%.2f"%maxValue
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wx.StaticText(parent, -1, strMaxValue, (pos[0] + size[0] - len(strMaxValue) * 8 , pos[1]))
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strValue = "%.2f"%value
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self.textValue = wx.TextCtrl(parent, -1, strValue,\
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(pos[0] + size[0] /2 - textSize[0]/2, pos[1]), textSize,\
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wx.TE_CENTER | wx.TE_PROCESS_ENTER)
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self.textValue.Disable()
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newPos = (pos[0], pos[1] + 20)
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else:
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newStyle = wx.SL_VERTICAL
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newPos = (pos[0], pos[1] + 40)
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if style & wx.SL_AUTOTICKS:
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newStyle |= wx.SL_AUTOTICKS
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wx.Slider.__init__(self, parent, id, intVal, intMin, intMax, newPos, size, style=newStyle)
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self.Disable()
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def GetValue(self):
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# overriding wx.Slider.GetValue()
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#return (wx.Slider.GetValue(self) * (self.maxValue - self.minValue) / 100.0 + self.minValue)
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return float(self.textValue.GetValue()) # [gjeon] since the value from the slider is not as precise as the value entered by the user
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def SetValue(self, value):
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# overriding wx.Slider.SetValue()
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self.textValue.SetValue("%.2f"%value)
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intVal = 100.0 / (self.maxValue - self.minValue) * (value - self.minValue)
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wx.Slider.SetValue(self, intVal)
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def onChange(self, event):
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# update textValue from slider
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self.textValue.Clear()
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floatVal = wx.Slider.GetValue(self) * (self.maxValue - self.minValue) / 100.0 + self.minValue
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self.textValue.WriteText("%.2f"%floatVal)
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if self.updateCB: # callback function sould receive event as the argument
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self.updateCB(event)
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event.Skip()
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def onEnter(self, event):
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# update slider from textValue
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if self.textValue is None:
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return
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intVal = 100.0 / (self.maxValue - self.minValue) * (float(self.textValue.GetValue()) - self.minValue)
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wx.Slider.SetValue(self, intVal)
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if self.updateCB: # callback function should receive event as the argument
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self.updateCB(event)
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event.Skip()
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def bindFunc(self, updateCB):
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self.updateCB = updateCB
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def Disable(self):
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# overriding wx.Slider.Disable()
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wx.Slider.Disable(self)
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self.textValue.Disable()
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def Enable(self):
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# overriding wx.Slider.Enable()
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wx.Slider.Enable(self)
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self.Bind(wx.EVT_SLIDER, self.onChange)
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if not self.textValue is None:
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self.textValue.Enable()
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self.textValue.Bind(wx.EVT_TEXT_ENTER, self.onEnter)
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