wifi_control.py
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00001 # Software License Agreement (BSD License)
00002 #
00003 # Copyright (c) 2008, Willow Garage, Inc.
00004 # All rights reserved.
00005 #
00006 # Redistribution and use in source and binary forms, with or without
00007 # modification, are permitted provided that the following conditions
00008 # are met:
00009 #
00010 #  * Redistributions of source code must retain the above copyright
00011 #    notice, this list of conditions and the following disclaimer.
00012 #  * Redistributions in binary form must reproduce the above
00013 #    copyright notice, this list of conditions and the following
00014 #    disclaimer in the documentation and/or other materials provided
00015 #    with the distribution.
00016 #  * Neither the name of the Willow Garage nor the names of its
00017 #    contributors may be used to endorse or promote products derived
00018 #    from this software without specific prior written permission.
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00020 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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00028 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00029 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
00030 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00031 # POSSIBILITY OF SUCH DAMAGE.
00032 
00033 import roslib
00034 roslib.load_manifest('elektron_dashboard')
00035 
00036 import wx
00037 
00038 from os import path
00039 
00040 class WifiControl(wx.Window):
00041   def __init__(self, parent, id, icons_path, wlan_interface, wlan_power):
00042     wx.Window.__init__(self, parent, id, wx.DefaultPosition, wx.Size(60, 50))
00043 
00044     self._base_bitmap = wx.Bitmap(path.join(icons_path, "wifi_bars.png"), wx.BITMAP_TYPE_PNG)
00045     self._off_bitmap = wx.Bitmap(path.join(icons_path, "wifi_off.png"), wx.BITMAP_TYPE_PNG)
00046     self._bar_bitmap = wx.Bitmap(path.join(icons_path, "bar_on.png"), wx.BITMAP_TYPE_PNG)
00047 
00048     self._signal_power = 3
00049     self._max_signal_power = wlan_power
00050     self.ip = "not connected"
00051 
00052     self.SetSize(wx.Size(self._base_bitmap.GetWidth(), 50))
00053 
00054     self.Bind(wx.EVT_PAINT, self.on_paint)
00055 
00056   def on_paint(self, evt):
00057     dc = wx.BufferedPaintDC(self)
00058 
00059     dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
00060     dc.Clear()
00061 
00062     w = self.GetSize().GetWidth()
00063     h = self._base_bitmap.GetHeight()
00064 
00065     if (self.ip == "not connected"):
00066         dc.DrawBitmap(self._off_bitmap, 0, 0, True)
00067     else:
00068         dc.DrawBitmap(self._base_bitmap, 0, 0, True)
00069     
00070         bars = int(5 * self._signal_power / self._max_signal_power)
00071         
00072         for i in range(bars):
00073             dc.DrawBitmap(self._bar_bitmap, 36 + i * self._bar_bitmap.GetWidth(), 1, True)
00074 
00075     fnt = dc.GetFont()
00076     fnt.SetPointSize(7)
00077     dc.SetFont(fnt)
00078     dc.DrawText("IP:", 0, 32)
00079     dc.DrawText('%s' % self.ip, 30, 32)
00080 
00081 
00082   def set_wifi_state(self, msg):
00083     self._signal_power = float(msg["Quality"])
00084     self.ip = msg["IP"] 
00085     if (self.ip == "not connected"):
00086         self.SetToolTip(wx.ToolTip("Not connected"))
00087     else:
00088         self.SetToolTip(wx.ToolTip("Quality: %.2f%%"%(self._signal_power)))
00089     
00090     self.Refresh()
00091 
00092   def set_stale(self):
00093     self._signal_power = 0
00094     self.SetToolTip(wx.ToolTip("WiFi: Stale"))
00095 
00096     self.Refresh()


elektron_dashboard
Author(s): Maciej StefaƄczyk
autogenerated on Sun Oct 5 2014 23:42:23