cpu_frame.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.
00019 #
00020 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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00025 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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00028 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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 def non_zero(value):
00041   if value < 0.00001 and value > -0.00001:
00042     return 0.00001
00043   return value
00044 
00045 
00046 class CpuFrame(wx.Window):
00047   def __init__(self, parent, id):
00048     wx.Window.__init__(self, parent, id, wx.DefaultPosition, wx.Size(82, 32))
00049 
00050     self._cur_freq = 0.0
00051     self._max_freq = 0.0
00052     self._usage = 0.0
00053     
00054     self._buf_size = 40
00055     
00056     #self._buffer = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
00057     self._buffer = [0.0] * self._buf_size
00058     self._cnt = 0
00059 
00060     self.Bind(wx.EVT_PAINT, self.on_paint)
00061 
00062   def on_paint(self, evt):
00063     dc = wx.BufferedPaintDC(self)
00064 
00065     dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
00066     dc.Clear()
00067 
00068     w = self.GetSize().GetWidth()
00069 
00070     br_black = wx.Brush(wx.Colour(0, 0, 0, 255))
00071     br_white = wx.Brush(wx.Colour(255, 255, 255, 255))
00072     
00073     pen_black = wx.Pen(wx.Colour(0, 0, 0, 255))
00074     pen_white = wx.Pen(wx.Colour(255, 255, 255, 255))
00075     
00076     dc.SetBrush(br_black)
00077     
00078     dc.DrawRectangle(0, 0, w, 32)
00079     
00080     dc.SetBrush(br_white)
00081     dc.SetPen(pen_white)
00082 
00083     w_step = (w - 2) / self._buf_size
00084     for i in range(self._buf_size):
00085         id = (self._cnt + i) % self._buf_size
00086         us = int(self._buffer[id])
00087         r = 0
00088         g = 0
00089         if (us <= 50):
00090             g = 255
00091             r = int(us*5.1)
00092         else:
00093             r = 255
00094             g = 255 - int((us-50)*5.1)
00095         dc.SetPen(wx.Pen(wx.Colour(r, g, 0, 255)))
00096         dc.SetBrush(wx.Brush(wx.Colour(r, g, 0, 255)))
00097         dc.DrawRectangle(1 + i*w_step, 31, w_step, -us * 0.3)
00098 
00099     fnt = dc.GetFont()
00100     fnt.SetFamily(wx.FONTFAMILY_MODERN)
00101     fnt.SetFaceName("FreeMono")
00102     fnt.SetWeight(wx.FONTWEIGHT_BOLD)
00103     fnt.SetPointSize(7)
00104     
00105     dc.SetFont(fnt)
00106     dc.SetTextForeground(wx.Colour(0, 0, 0, 255))
00107     dc.DrawText('%3.0f%%  %4.0fMHz' % (self._usage, self._cur_freq), 2, 2)
00108     dc.SetTextForeground(wx.Colour(255, 255, 255, 255))
00109     dc.DrawText('%3.0f%%  %4.0fMHz' % (self._usage, self._cur_freq), 1, 1)
00110 
00111 
00112   def set_state(self, msg):
00113     self._usage = float(msg['usage'])
00114     self._cur_freq = float(msg["cur_freq"])
00115     self._max_freq = float(msg["max_freq"])
00116     
00117     self._buffer[self._cnt] = self._usage
00118     self._cnt = (self._cnt + 1) % self._buf_size
00119     
00120     self.Refresh()
00121 
00122   def set_stale(self):
00123     self._cur_freq = 0.0
00124     self._max_freq = 0.0
00125     self._usage = 0.0
00126     self.Refresh()


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