Pileus Git - ~andy/csm213a-hw/blob - vis/visual.py

   1 #!/usr/bin/env python
   2
   3 import sys
   4
   5 if sys.version_info<(3,0,0):
   6         import pygtk as PyGtk
   7         import gtk   as Gtk
   8         import gtk   as GLib
   9 else:
  10         from gi.repository import Gtk
  11         from gi.repository import GLib
  12
  13 if sys.version_info<(3,0,0):
  14         ICON_SIZE_BUTTON = Gtk.ICON_SIZE_BUTTON
  15 else:
  16         ICON_SIZE_BUTTON = Gtk.IconSize.BUTTON
  17
  18 class Visual:
  19         FRAMES_PER_SEC = 60 # hz
  20         RATES_PER_SEC  = 10 # hz
  21
  22         def __init__(self, config, device, logger):
  23                 def get_objects(names):
  24                         return list(map(lambda x:
  25                                 self.builder.get_object(x), names))
  26
  27                 self.config   = config
  28                 self.device   = device
  29                 self.logger   = logger
  30                 self.builder  = Gtk.Builder()
  31                 self.history  = [0.5]*1000
  32
  33                 self.rate_due = 0
  34                 self.rate_cnt = {'acc': 0,
  35                                  'mag': 0,
  36                                  'lgt': 0,
  37                                  'tch': 0,
  38                                  'a2d': 0}
  39
  40                 self.builder.add_from_file('visual.ui')
  41                 self.builder.connect_signals(self)
  42                 self.window   = self.builder.get_object("window")
  43                 self.settings = self.builder.get_object("settings")
  44
  45                 self.accs     = get_objects(['accx', 'accy', 'accz'])
  46                 self.mags     = get_objects(['magx', 'magy', 'magz'])
  47                 self.lgts     = get_objects(['lgt'])
  48                 self.tchs     = get_objects(['tchp', 'tchd'])
  49                 self.a2ds     = get_objects(['a2d0', 'a2d1', 'a2d2', 'a2d3', 'a2d4', 'a2d5'])
  50
  51         # Signal handlers
  52         def on_hide(self, win, *args):
  53                 self.settings.hide()
  54                 return True
  55
  56         def on_show(self, act):
  57                 self.settings.show()
  58                 return True
  59
  60         def on_serial(self, act):
  61                 if act.get_active():
  62                         self.status(self.device.connect())
  63                 else:
  64                         self.status(self.device.disconnect())
  65                 return True
  66
  67         def on_xively(self, act):
  68                 if act.get_active():
  69                         self.status(self.logger.connect())
  70                 else:
  71                         self.status(self.logger.disconnect())
  72                 return True
  73
  74         def on_flush(self, act):
  75                 self.logger.flush()
  76
  77         def on_enable(self, obj):
  78                 name  = Gtk.Buildable.get_name(obj)
  79                 name  = name.replace('_btn', '')
  80                 state = obj.get_active()
  81                 if self.config.enable[name] != state:
  82                         self.device.set_enable(name, state)
  83                         self.config.enable[name] = state
  84                         self.config.save()
  85
  86         def on_rate(self, obj):
  87                 name  = Gtk.Buildable.get_name(obj)
  88                 name  = name.replace('_spin', '')
  89                 value = obj.get_value()
  90                 if self.config.rate[name] != value:
  91                         self.device.set_rate(name, value)
  92                         self.config.rate[name] = value
  93                         self.config.save()
  94
  95         def on_config(self, obj):
  96                 name = Gtk.Buildable.get_name(obj)
  97                 if isinstance(obj, Gtk.SpinButton):
  98                         value = obj.get_value()
  99                 else:
 100                         value = obj.get_text()
 101                 if getattr(self.config, name) != value:
 102                         setattr(self.config, name, value)
 103                         self.config.save()
 104
 105         def on_expose(self, obj, _):
 106                 cairo   = obj.window.cairo_create()
 107                 count   = len(self.history)
 108                 extents = cairo.clip_extents()
 109                 width   = extents[2] - extents[0]
 110                 height  = extents[3] - extents[1]
 111
 112                 cairo.set_line_width(4)
 113                 for i in range(count):
 114                         x = i*width/(count-1)
 115                         y = ((1-self.history[i]) * 0.8 + 0.1) * height
 116                         if i==0:
 117                                 cairo.move_to(x, y)
 118                         else:
 119                                 cairo.line_to(x, y)
 120                 cairo.stroke()
 121
 122         def on_key(self, win, ev):
 123                 if ev.string == 'q':
 124                         Gtk.main_quit();
 125
 126         def on_destroy(self, win):
 127                 Gtk.main_quit()
 128
 129         # Methods
 130         def load_config(self):
 131                 def set_val(name, val):
 132                         self.builder.get_object(name).set_value(val)
 133                 def set_txt(name, val):
 134                         self.builder.get_object(name).set_text(val)
 135                 def set_act(name, val):
 136                         self.builder.get_object(name).set_active(val)
 137
 138                 # Serial settings
 139                 set_txt('device',   self.config.device)
 140                 set_val('baudrate', self.config.baudrate)
 141                 set_txt('parity',   self.config.parity)
 142                 set_val('databits', self.config.databits)
 143                 set_val('stopbits', self.config.stopbits)
 144
 145                 # Xively settings
 146                 set_txt('feedid',   self.config.feedid)
 147                 set_txt('apikey',   self.config.apikey)
 148                 set_val('maxrate',  self.config.maxrate)
 149
 150                 # Sensor settings
 151                 for key in list(self.config.enable.keys()):
 152                         set_act(key+'_btn',  self.config.enable[key])
 153                         set_val(key+'_spin', self.config.rate[key])
 154
 155         def update(self, state):
 156                 def setval(objs, vals, lbls):
 157                         found = 0
 158                         for i in range(0,len(objs)):
 159                                 if vals[i] == None:
 160                                         continue
 161                                 found = 1
 162                                 if lbls and lbls[i]:
 163                                         objs[i].set_text('%s: %f' % (lbls[i], vals[i]))
 164                                 else:
 165                                         objs[i].set_text('%f' % vals[i])
 166                         return found
 167
 168                 # Dispaly values and sum up rates
 169                 self.rate_cnt['acc'] += setval(self.accs, state.acc, ['X', 'Y', 'Z'])
 170                 self.rate_cnt['mag'] += setval(self.mags, state.mag, ['X', 'Y', 'Z'])
 171                 self.rate_cnt['lgt'] += setval(self.lgts, state.lgt, [])
 172                 self.rate_cnt['tch'] += setval(self.tchs, state.tch, ['P', 'D'])
 173                 self.rate_cnt['a2d'] += setval(self.a2ds, state.a2d, [])
 174
 175                 # Save history
 176                 if state.a2d[0] != None:
 177                         self.history = self.history[1:] + [state.a2d[0]]
 178
 179         def debug(self, state):
 180                 print('update: ' + str(state))
 181                 print('\tacc - ' + str(state.acc))
 182                 print('\tmag - ' + str(state.mag))
 183                 print('\tlgt - ' + str(state.lgt))
 184                 print('\ttch - ' + str(state.touch))
 185                 print('\ta2d - ' + str(state.a2d))
 186
 187         def read_timer(self):
 188                 def check(state, name):
 189                         btn = self.builder.get_object(name + '_btn')
 190                         con = self.builder.get_object(name + '_con')
 191                         img = Gtk.STOCK_YES if state else Gtk.STOCK_NO
 192                         btn.set_active(state)
 193                         con.set_from_stock(img, ICON_SIZE_BUTTON)
 194
 195                 # Update status icons
 196                 check(self.device.running(), "serial")
 197                 check(self.logger.running(), "xively")
 198
 199                 # Read data and update data display
 200                 for item in self.device.process():
 201                         self.update(item)
 202                         self.logger.append(item)
 203                         #self.debug(item)
 204
 205                 # Refresh window
 206                 self.window.queue_draw()
 207
 208                 return True
 209
 210         def rate_timer(self):
 211                 for sns in self.rate_cnt:
 212                         rate  = self.rate_cnt[sns] * Visual.RATES_PER_SEC
 213                         obj   = self.builder.get_object(sns + '_rate')
 214                         obj.set_text('%d' % rate)
 215                         self.rate_cnt[sns] = 0
 216                 return True
 217
 218         def run(self):
 219                 self.load_config()
 220                 self.window.show()
 221                 GLib.timeout_add(1000/Visual.FRAMES_PER_SEC, self.read_timer)
 222                 GLib.timeout_add(1000/Visual.RATES_PER_SEC,  self.rate_timer)
 223                 Gtk.main()
 224
 225         # Private methods
 226         def status(self, msg):
 227                 if not msg:
 228                         return
 229                 status = self.builder.get_object("status")
 230                 status.push(text=('Error: ' + msg), context_id=0)