Source Code for Module Gnumed.wxpython.gmPatPicWidgets

  1  """GNUmed patient picture widget.""" 
  2   
  3  #===================================================================== 
  4  __version__ = "$Revision: 1.33 $" 
  5  __author__  = "R.Terry <rterry@gnumed.net>,\ 
  6                             I.Haywood <i.haywood@ugrad.unimelb.edu.au>,\ 
  7                             K.Hilbert <Karsten.Hilbert@gmx.net>" 
  8  __license__ = "GPL" 
  9   
 10  # standard lib 
 11  import sys, os, os.path, logging 
 12   
 13   
 14  # 3rd party 
 15  import wx, wx.lib.imagebrowser 
 16   
 17   
 18  # GNUmed 
 19  from Gnumed.pycommon import gmDispatcher, gmTools 
 20  from Gnumed.business import gmDocuments, gmPerson 
 21  from Gnumed.wxpython import gmGuiHelpers 
 22   
 23   
 24  _log = logging.getLogger('gm.ui') 
 25  _log.info(__version__) 
 26   
 27  ID_AcquirePhoto = wx.NewId() 
 28  ID_ImportPhoto = wx.NewId() 
 29   
 30  #===================================================================== 
 31 -class cPatientPicture(wx.StaticBitmap): 
 32          """A patient picture control ready for display. 
 33                  with popup menu to import/export 
 34                  remove or Acquire from a device 
 35          """ 
 36 -        def __init__(self, parent, id, width=50, height=54): 
 37   
 38                  # find assets 
 39                  paths = gmTools.gmPaths(app_name = u'gnumed', wx = wx) 
 40                  self.__fallback_pic_name = os.path.join(paths.system_app_data_dir, 'bitmaps', 'empty-face-in-bust.png') 
 41   
 42                  # load initial dummy bitmap 
 43                  img_data = wx.Image(self.__fallback_pic_name, wx.BITMAP_TYPE_ANY) 
 44                  bmp_data = wx.BitmapFromImage(img_data) 
 45                  del img_data 
 46                  # good default: 50x54 
 47                  self.desired_width = width 
 48                  self.desired_height = height 
 49                  wx.StaticBitmap.__init__( 
 50                          self, 
 51                          parent, 
 52                          id, 
 53                          bmp_data, 
 54                          wx.Point(0, 0), 
 55                          wx.Size(self.desired_width, self.desired_height) 
 56                  ) 
 57   
 58                  self.__pat = gmPerson.gmCurrentPatient() 
 59   
 60                  # pre-make menu 
 61                  self.__photo_menu = wx.Menu() 
 62                  ID = wx.NewId() 
 63                  self.__photo_menu.Append(ID, _('Refresh from database')) 
 64                  wx.EVT_MENU(self, ID, self._on_refresh_from_backend) 
 65                  self.__photo_menu.AppendSeparator() 
 66                  self.__photo_menu.Append(ID_AcquirePhoto, _("Acquire from imaging device")) 
 67                  self.__photo_menu.Append(ID_ImportPhoto, _("Import from file")) 
 68   
 69                  self.__register_events() 
 70          #----------------------------------------------------------------- 
 71          # event handling 
 72          #----------------------------------------------------------------- 
 73 -        def __register_events(self): 
 74                  # wxPython events 
 75                  wx.EVT_RIGHT_UP(self, self._on_RightClick_photo) 
 76   
 77                  wx.EVT_MENU(self, ID_AcquirePhoto, self._on_AcquirePhoto) 
 78                  wx.EVT_MENU(self, ID_ImportPhoto, self._on_ImportPhoto) 
 79   
 80                  # dispatcher signals 
 81                  gmDispatcher.connect(receiver=self._on_post_patient_selection, signal = u'post_patient_selection') 
 82          #----------------------------------------------------------------- 
 83 -        def _on_RightClick_photo(self, event): 
 84                  if not self.__pat.connected: 
 85                          gmDispatcher.send(signal='statustext', msg=_('No active patient.')) 
 86                          return False 
 87                  self.PopupMenu(self.__photo_menu, event.GetPosition()) 
 88          #----------------------------------------------------------------- 
 89 -        def _on_refresh_from_backend(self, evt): 
 90                  self.__reload_photo() 
 91          #----------------------------------------------------------------- 
 92 -        def _on_ImportPhoto(self, event): 
 93                  """Import an existing photo.""" 
 94   
 95                  # get from file system 
 96                  imp_dlg = wx.lib.imagebrowser.ImageDialog(parent = self, set_dir = os.path.expanduser('~')) 
 97                  imp_dlg.Centre() 
 98                  if imp_dlg.ShowModal() != wx.ID_OK: 
 99                          return 
100   
101                  self.__import_pic_into_db(fname = imp_dlg.GetFile()) 
102                  self.__reload_photo() 
103          #----------------------------------------------------------------- 
104 -        def _on_AcquirePhoto(self, event): 
105   
106                  # get from image source 
107                  from Gnumed.pycommon import gmScanBackend 
108   
109                  try: 
110                          fnames = gmScanBackend.acquire_pages_into_files ( 
111                                  delay = 5, 
112                                  tmpdir = os.path.expanduser(os.path.join('~', '.gnumed', 'tmp')), 
113                                  calling_window = self 
114                          ) 
115                  except OSError: 
116                          _log.exception('problem acquiring image from source') 
117                          gmGuiHelpers.gm_show_error ( 
118                                  aMessage = _( 
119                                          'No image could be acquired from the source.\n\n' 
120                                          'This may mean the scanner driver is not properly installed.\n\n' 
121                                          'On Windows you must install the TWAIN Python module\n' 
122                                          'while on Linux and MacOSX it is recommended to install\n' 
123                                          'the XSane package.' 
124                                  ), 
125                                  aTitle = _('Acquiring photo') 
126                          ) 
127                          return 
128   
129                  if fnames is False: 
130                          gmGuiHelpers.gm_show_error ( 
131                                  aMessage = _('Patient photo could not be acquired from source.'), 
132                                  aTitle = _('Acquiring photo') 
133                          ) 
134                          return 
135   
136                  if len(fnames) == 0:            # no pages scanned 
137                          return 
138   
139                  self.__import_pic_into_db(fname=fnames[0]) 
140                  self.__reload_photo() 
141          #----------------------------------------------------------------- 
142          # internal API 
143          #----------------------------------------------------------------- 
144 -        def __import_pic_into_db(self, fname=None): 
145   
146                  docs = gmDocuments.search_for_document(patient_id = self.__pat.ID, type_id = gmDocuments.MUGSHOT) 
147                  if len(docs) == 0: 
148                          emr = self.__pat.get_emr() 
149                          epi = emr.add_episode(episode_name=_('Administration')) 
150                          enc = emr.active_encounter 
151                          doc = gmDocuments.create_document ( 
152                                  document_type = gmDocuments.MUGSHOT, 
153                                  episode = epi['pk_episode'], 
154                                  encounter = enc['pk_encounter'] 
155                          ) 
156                  else: 
157                          doc = docs[0] 
158   
159                  obj = doc.add_part(file=fname) 
160                  return True 
161          #----------------------------------------------------------------- 
162 -        def __reload_photo(self): 
163                  """(Re)fetch patient picture from DB.""" 
164   
165                  doc_folder = self.__pat.get_document_folder() 
166                  photo = doc_folder.get_latest_mugshot() 
167   
168                  if photo is None: 
169                          fname = None 
170  #                       gmDispatcher.send(signal='statustext', msg=_('Cannot get most recent patient photo from database.')) 
171                  else: 
172                          fname = photo.export_to_file() 
173   
174                  self.SetToolTipString (_( 
175                          'Patient picture (%s).\n' 
176                          '\n' 
177                          'Right-click for context menu.' 
178                  ) % photo['date_generated'].strftime('%b %Y')) 
179   
180                  return self.__set_pic_from_file(fname) 
181          #----------------------------------------------------------------- 
182 -        def __set_pic_from_file(self, fname=None): 
183                  if fname is None: 
184                          fname = self.__fallback_pic_name 
185                  try: 
186                          img_data = wx.Image(fname, wx.BITMAP_TYPE_ANY) 
187                          img_data.Rescale(self.desired_width, self.desired_height) 
188                          bmp_data = wx.BitmapFromImage(img_data) 
189                  except: 
190                          _log.exception('cannot set patient picture from [%s]', fname) 
191                          gmDispatcher.send(signal='statustext', msg=_('Cannot set patient picture from [%s].') % fname) 
192                          return False 
193                  del img_data 
194                  self.SetBitmap(bmp_data) 
195                  self.__pic_name = fname 
196   
197                  return True 
198          #----------------------------------------------------------------- 
199 -        def _on_post_patient_selection(self): 
200                  self.__reload_photo() 
201   
202  #==================================================== 
203  # main 
204  #---------------------------------------------------- 
205  if __name__ == "__main__": 
206          app = wx.PyWidgetTester(size = (200, 200)) 
207          app.SetWidget(cPatientPicture, -1) 
208          app.MainLoop() 
209  #==================================================== 
210