Source Code for Module advene.gui.views.annotationdisplay

  1  # 
  2  # Advene: Annotate Digital Videos, Exchange on the NEt 
  3  # Copyright (C) 2008 Olivier Aubert <olivier.aubert@liris.cnrs.fr> 
  4  # 
  5  # Advene is free software; you can redistribute it and/or modify 
  6  # it under the terms of the GNU General Public License as published by 
  7  # the Free Software Foundation; either version 2 of the License, or 
  8  # (at your option) any later version. 
  9  # 
 10  # Advene is distributed in the hope that it will be useful, 
 11  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
 12  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 13  # GNU General Public License for more details. 
 14  # 
 15  # You should have received a copy of the GNU General Public License 
 16  # along with Advene; if not, write to the Free Software 
 17  # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA 
 18  # 
 19  """Module displaying the contents of an annotation. 
 20  """ 
 21   
 22  import gtk 
 23  import gobject 
 24  from gettext import gettext as _ 
 25   
 26  import advene.core.config as config 
 27  from advene.gui.views import AdhocView 
 28  import advene.util.helper as helper 
 29  from advene.gui.util import png_to_pixbuf 
 30   
 31  name="Annotation display plugin" 
 32   
 33 -def register(controller): 
 34      controller.register_viewclass(AnnotationDisplay) 
 35   
 36 -class AnnotationDisplay(AdhocView): 
 37      view_name = _("AnnotationDisplay") 
 38      view_id = 'annotationdisplay' 
 39      tooltip = _("Display the contents of an annotation") 
 40   
 41 -    def __init__(self, controller=None, parameters=None, annotation=None): 
 42          super(AnnotationDisplay, self).__init__(controller=controller) 
 43          self.close_on_package_load = True 
 44          self.contextual_actions = () 
 45          self.controller=controller 
 46          self.annotation=annotation 
 47          self.no_image_pixbuf=png_to_pixbuf(controller.package.imagecache.not_yet_available_image, width=50) 
 48          self.widget=self.build_widget() 
 49   
 50 -    def set_annotation(self, a=None): 
 51          """This method takes either an annotation, a time value or None as parameter. 
 52          """ 
 53          self.annotation=a 
 54          self.refresh() 
 55          return True 
 56   
 57 -    def set_master_view(self, v): 
 58          v.register_slave_view(self) 
 59          self.close_on_package_load = False 
 60   
 61 -    def update_annotation(self, annotation=None, event=None): 
 62          if annotation != self.annotation: 
 63              return True 
 64          if event == 'AnnotationEditEnd': 
 65              self.refresh() 
 66          elif event == 'AnnotationDelete': 
 67              if self.master_view is None: 
 68                  # Autonomous view. We should close it. 
 69                  self.close() 
 70              else: 
 71                  # There is a master view, just empty the representation 
 72                  self.set_annotation(None) 
 73          return True 
 74   
 75 -    def refresh(self, *p): 
 76          if self.annotation is None: 
 77              d={ 'title': _("No annotation"), 
 78                  'begin': '--:--:--:--', 
 79                  'end': '--:--:--:--', 
 80                  'contents': '', 
 81                  'imagecontents': None} 
 82          elif isinstance(self.annotation, int) or isinstance(self.annotation, long): 
 83              d={ 'title': _("Current time"), 
 84                  'begin': helper.format_time(self.annotation), 
 85                  'end': '--:--:--:--', 
 86                  'contents': '', 
 87                  'imagecontents': None} 
 88          else: 
 89              col=self.controller.get_element_color(self.annotation) 
 90              if col: 
 91                  title='<span background="%s">Annotation <b>%s</b></span>' % (col, self.annotation.id) 
 92              else: 
 93                  title='Annotation <b>%s</b>' % self.annotation.id 
 94              d={ 'title': title, 
 95                  'begin': helper.format_time(self.annotation.fragment.begin), 
 96                  'end': helper.format_time(self.annotation.fragment.end) } 
 97              if self.annotation.content.mimetype.startswith('image/'): 
 98                  # SVG autodetection does not seem to work too well. Let's help it. 
 99                  if 'svg' in self.annotation.content.mimetype: 
100                      try: 
101                          loader = gtk.gdk.PixbufLoader('svg') 
102                      except Exception, e: 
103                          print "Unable to load the SVG pixbuf loader: ", str(e) 
104                          loader=None 
105                  else: 
106                      loader = gtk.gdk.PixbufLoader() 
107                  if loader is not None: 
108                      try: 
109                          loader.write (self.annotation.content.data) 
110                          loader.close () 
111                          p = loader.get_pixbuf () 
112                          width = p.get_width() 
113                          height = p.get_height() 
114                          pixbuf=png_to_pixbuf (self.controller.package.imagecache[self.