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#!/usr/bin/env python
import wx
def slider(parent, min, max, callback):
"""
Return a wx.Slider object.
Args:
min: minimum slider value (float)
max: maximum slider value (float)
callback: function of one arg invoked when slider moves.
@rtype: wx.Slider
"""
new_id = wx.NewId()
s = wx.Slider(parent, new_id, (max+min)/2, min, max, wx.DefaultPosition,
wx.Size(250,-1), wx.SL_HORIZONTAL | wx.SL_LABELS)
wx.EVT_COMMAND_SCROLL(parent, new_id,
lambda evt : callback(evt.GetInt()))
return s
# ----------------------------------------------------------------
# Demo app
# ----------------------------------------------------------------
if __name__ == '__main__':
from gnuradio.wxgui import stdgui2
class demo_graph(stdgui2.std_top_block):
def __init__(self, frame, panel, vbox, argv):
stdgui2.std_top_block.__init__ (self, frame, panel, vbox, argv)
vbox.Add(slider(panel, 23, 47, self.my_callback1), 1, wx.ALIGN_CENTER)
vbox.Add(slider(panel, -100, 100, self.my_callback2), 1, wx.ALIGN_CENTER)
def my_callback1(self, val):
print "cb1 = ", val
def my_callback2(self, val):
print "cb2 = ", val
def main ():
app = stdgui2.stdapp (demo_graph, "Slider Demo")
app.MainLoop ()
main ()
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