mem_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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00026 # BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00027 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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 MemFrame(wx.Window):
00047   def __init__(self, parent, id):
00048     wx.Window.__init__(self, parent, id, wx.DefaultPosition, wx.Size(82, 32))
00049 
00050     self._total = 1.0
00051     self._used = 0.0
00052     self._shared = 0.0
00053     self._cached = 0.0
00054     self._buffers = 0.0
00055     
00056     self._buf_size = 40
00057     
00058     #self._buffer = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
00059     self._buffer = [0.0] * self._buf_size
00060     self._cnt = 0
00061 
00062     self.Bind(wx.EVT_PAINT, self.on_paint)
00063 
00064   def on_paint(self, evt):
00065     dc = wx.BufferedPaintDC(self)
00066 
00067     dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
00068     dc.Clear()
00069 
00070     w = self.GetSize().GetWidth()
00071 
00072     br_black = wx.Brush(wx.Colour(0, 0, 0, 255))
00073     br_white = wx.Brush(wx.Colour(255, 255, 255, 255))
00074     
00075     pen_black = wx.Pen(wx.Colour(0, 0, 0, 255))
00076     pen_white = wx.Pen(wx.Colour(255, 255, 255, 255))
00077     
00078     dc.SetBrush(br_black)
00079     
00080     dc.DrawRectangle(0, 0, w, 32)
00081     
00082     dc.SetBrush(br_white)
00083     dc.SetPen(pen_white)
00084 
00085     w_step = (w - 2) / self._buf_size
00086     for i in range(self._buf_size):
00087         id = (self._cnt + i) % self._buf_size
00088         us = int(self._buffer[id])
00089         r = 0
00090         g = 0
00091         if (us <= 50):
00092             g = 255
00093             r = int(us*5.1)
00094         else:
00095             r = 255
00096             g = 255 - int((us-50)*5.1)
00097         dc.SetPen(wx.Pen(wx.Colour(r, g, 0, 255)))
00098         dc.SetBrush(wx.Brush(wx.Colour(r, g, 0, 255)))
00099         dc.DrawRectangle(1 + i*w_step, 31, w_step, -us * 0.3)
00100 
00101     fnt = dc.GetFont()
00102     fnt.SetFamily(wx.FONTFAMILY_MODERN)
00103     fnt.SetFaceName("FreeMono")
00104     fnt.SetWeight(wx.FONTWEIGHT_BOLD)
00105     fnt.SetPointSize(7)
00106     
00107     dc.SetFont(fnt)
00108     dc.SetTextForeground(wx.Colour(0, 0, 0, 255))
00109     dc.DrawText('%3.0f%%   %4.0fMB' % (100 * self._used / self._total, self._total), 2, 2)
00110     dc.SetTextForeground(wx.Colour(255, 255, 255, 255))
00111     dc.DrawText('%3.0f%%   %4.0fMB' % (100 * self._used / self._total, self._total), 1, 1)
00112 
00113 
00114   def set_state(self, msg):
00115     self._total = float(msg['total'])
00116     self._used = float(msg['used'])
00117     
00118     self._buffer[self._cnt] = 100 * self._used / self._total
00119     self._cnt = (self._cnt + 1) % self._buf_size
00120     
00121     self.Refresh()
00122 
00123   def set_stale(self):
00124     self._cur_freq = 0.0
00125     self._max_freq = 0.0
00126     self._usage = 0.0
00127     self.Refresh()


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