git.gag.com Git - debian/gnuradio/blob - gr-wxgui/src/python/histo_window.py

   1 #
   2 # Copyright 2009 Free Software Foundation, Inc.
   3 #
   4 # This file is part of GNU Radio
   5 #
   6 # GNU Radio is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3, or (at your option)
   9 # any later version.
  10 #
  11 # GNU Radio is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with GNU Radio; see the file COPYING.  If not, write to
  18 # the Free Software Foundation, Inc., 51 Franklin Street,
  19 # Boston, MA 02110-1301, USA.
  20 #
  21
  22 ##################################################
  23 # Imports
  24 ##################################################
  25 import plotter
  26 import common
  27 import wx
  28 import numpy
  29 import math
  30 import pubsub
  31 from constants import *
  32 from gnuradio import gr #for gr.prefs
  33 import forms
  34
  35 ##################################################
  36 # Constants
  37 ##################################################
  38 DEFAULT_WIN_SIZE = (600, 300)
  39
  40 ##################################################
  41 # histo window control panel
  42 ##################################################
  43 class control_panel(wx.Panel):
  44         """
  45         A control panel with wx widgits to control the plotter and histo sink.
  46         """
  47
  48         def __init__(self, parent):
  49                 """
  50                 Create a new control panel.
  51                 @param parent the wx parent window
  52                 """
  53                 self.parent = parent
  54                 wx.Panel.__init__(self, parent, style=wx.SUNKEN_BORDER)
  55                 control_box = wx.BoxSizer(wx.VERTICAL)
  56                 SIZE = (100, -1)
  57                 control_box = forms.static_box_sizer(
  58                         parent=self, label='Options',
  59                         bold=True, orient=wx.VERTICAL,
  60                 )
  61                 #num bins
  62                 control_box.AddStretchSpacer()
  63                 forms.text_box(
  64                         sizer=control_box, parent=self, label='Num Bins',
  65                         converter=forms.int_converter(),
  66                         ps=parent, key=NUM_BINS_KEY,
  67                 )
  68                 #frame size
  69                 control_box.AddStretchSpacer()
  70                 forms.text_box(
  71                         sizer=control_box, parent=self, label='Frame Size',
  72                         converter=forms.int_converter(),
  73                         ps=parent, key=FRAME_SIZE_KEY,
  74                 )
  75                 #run/stop
  76                 control_box.AddStretchSpacer()
  77                 forms.toggle_button(
  78                         sizer=control_box, parent=self,
  79                         true_label='Stop', false_label='Run',
  80                         ps=parent, key=RUNNING_KEY,
  81                 )
  82                 #set sizer
  83                 self.SetSizerAndFit(control_box)
  84
  85 ##################################################
  86 # histo window with plotter and control panel
  87 ##################################################
  88 class histo_window(wx.Panel, pubsub.pubsub):
  89         def __init__(
  90                 self,
  91                 parent,
  92                 controller,
  93                 size,
  94                 title,
  95                 maximum_key,
  96                 minimum_key,
  97                 num_bins_key,
  98                 frame_size_key,
  99                 msg_key,
 100         ):
 101                 pubsub.pubsub.__init__(self)
 102                 #setup
 103                 self.samples = list()
 104                 #proxy the keys
 105                 self.proxy(MAXIMUM_KEY, controller, maximum_key)
 106                 self.proxy(MINIMUM_KEY, controller, minimum_key)
 107                 self.proxy(NUM_BINS_KEY, controller, num_bins_key)
 108                 self.proxy(FRAME_SIZE_KEY, controller, frame_size_key)
 109                 self.proxy(MSG_KEY, controller, msg_key)
 110                 #initialize values
 111                 self[RUNNING_KEY] = True
 112                 self[X_DIVS_KEY] = 8
 113                 self[Y_DIVS_KEY] = 4
 114                 #init panel and plot
 115                 wx.Panel.__init__(self, parent, style=wx.SIMPLE_BORDER)
 116                 self.plotter = plotter.bar_plotter(self)
 117                 self.plotter.SetSize(wx.Size(*size))
 118                 self.plotter.set_title(title)
 119                 self.plotter.enable_point_label(True)
 120                 self.plotter.enable_grid_lines(False)
 121                 #setup the box with plot and controls
 122                 self.control_panel = control_panel(self)
 123                 main_box = wx.BoxSizer(wx.HORIZONTAL)
 124                 main_box.Add(self.plotter, 1, wx.EXPAND)
 125                 main_box.Add(self.control_panel, 0, wx.EXPAND)
 126                 self.SetSizerAndFit(main_box)
 127                 #register events
 128                 self.subscribe(MSG_KEY, self.handle_msg)
 129                 self.subscribe(X_DIVS_KEY, self.update_grid)
 130                 self.subscribe(Y_DIVS_KEY, self.update_grid)
 131
 132         def handle_msg(self, msg):
 133                 """
 134                 Handle the message from the fft sink message queue.
 135                 @param msg the frame as a character array
 136                 """
 137                 if not self[RUNNING_KEY]: return
 138                 #convert to floating point numbers
 139                 self.samples = 100*numpy.fromstring(msg, numpy.float32)[:self[NUM_BINS_KEY]] #only take first frame
 140                 self.plotter.set_bars(
 141                         bars=self.samples,
 142                         bar_width=0.6,
 143                         color_spec=(0, 0, 1),
 144                 )
 145                 self.update_grid()
 146
 147         def update_grid(self):
 148                 if not len(self.samples): return
 149                 #calculate the maximum y value
 150                 y_off = math.ceil(numpy.max(self.samples))
 151                 y_off = min(max(y_off, 1.0), 100.0) #between 1% and 100%
 152                 #update the x grid
 153                 self.plotter.set_x_grid(
 154                         self[MINIMUM_KEY], self[MAXIMUM_KEY],
 155                         common.get_clean_num((self[MAXIMUM_KEY] - self[MINIMUM_KEY])/self[X_DIVS_KEY]),
 156                 )
 157                 self.plotter.set_x_label('Counts')
 158                 #update the y grid
 159                 self.plotter.set_y_grid(0, y_off, y_off/self[Y_DIVS_KEY])
 160                 self.plotter.set_y_label('Frequency', '%')
 161                 self.plotter.update()