gcompris-data 15.02-1.1ubuntu1 / usr / share / gcompris / python / anim.py

#  gcompris - anim
#
# Copyright (C) 2003, 2009 Bruno Coudoin
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, see <http://www.gnu.org/licenses/>.


#  Version 3 of anim
# Rewrote to support a timeline. Now each object type has its own
# python class.
# Each frame can be re-edited at will.
#
#  Version 2 of anim
# Due to performance, the animation code as been rewriten
# For now, the animation is done keeping difference
# in parameters of graphicals object between shots?


from gcompris import gcompris_gettext as _
# PythonTest Board module
import gobject
import goocanvas
import gcompris
import gcompris.utils
import gcompris.skin
import gcompris.bonus
import gcompris.sound
import gtk
import gtk.gdk
import gtk.keysyms
import copy
import time
import os
import sys
import tempfile
import cPickle as pickle
import base64

from Color import *
from Timeline import *
from AnimItem import *

fles=None

# When anim is passed the mode 'draw', animation is disabled.
#

#class Gcompris_anim:
class Gcompris_anim:
  """The cartoon activity"""

  def __init__(self, gcomprisBoard):

    self.gcomprisBoard = gcomprisBoard
    self.timeout = 0

    self.doc = None

    if self.gcomprisBoard.mode == 'draw':
      # DRAW
      #
      # draw is adapted to little kids : big anchors
      self.DEFAULT_ANCHOR_SIZE	= 14

      # draw specific UI
      self.selector_section = "draw3"
    else:
      # Anim
      #
      # Normal anchors
      self.DEFAULT_ANCHOR_SIZE	= 10

      # anim specific UI
      self.selector_section = "anim3"

    # Initialisation. Should not change in draw.
    self.running = False

    # global parameter to access object structures from global fonctions
    global fles
    fles=self

    self.file_type = ".gcanim"

    # Part of UI : tools buttons
    # TOOL SELECTION
    self.tools = [
      [ "SAVE",
        "anim/tool-save.png",
        "anim/tool-save.png",
        gcompris.CURSOR_SELECT,
        _("Save...")
      ],
      [ "LOAD",
        "anim/tool-load.png",
        "anim/tool-load.png",
        gcompris.CURSOR_SELECT,
        _("Load...")
      ],
      [ "MOVIE",
        "anim/tool-movie.png",
        "anim/tool-movie_on.png",
        gcompris.CURSOR_SELECT,
        _("Run the animation")
      ],
      [ "SELECT",
        "anim/tool-select.png",
        "anim/tool-select_on.png",
        gcompris.CURSOR_SELECT,
        _("Select")
      ],
      [ "RECT",
        "anim/tool-rectangle.png",
        "anim/tool-rectangle_on.png",
        gcompris.CURSOR_RECT,
        _("Rectangle")
      ],
      [ "FILL_RECT",
        "anim/tool-filledrectangle.png",
        "anim/tool-filledrectangle_on.png",
        gcompris.CURSOR_FILLRECT,
        _("Filled rectangle")
      ],
      [ "CIRCLE",
        "anim/tool-circle.png",
        "anim/tool-circle_on.png",
        gcompris.CURSOR_CIRCLE,
        _("Circle")
      ],
      [ "FILL_CIRCLE",
        "anim/tool-filledcircle.png",
        "anim/tool-filledcircle_on.png",
        gcompris.CURSOR_FILLCIRCLE,
        _("Filled circle")
      ],
      [ "LINE",
        "anim/tool-line.png",
        "anim/tool-line_on.png",
        gcompris.CURSOR_LINE,
        _("Line")
      ],
      [ "TEXT",
        "anim/tool-text.png",
        "anim/tool-text_on.png",
        gcompris.CURSOR_LINE,
        _("Text")
      ],
      [ "IMAGE",
        "anim/tool-image.png",
        "anim/tool-image_on.png",
        gcompris.CURSOR_DEFAULT,
        _("Image...")
      ],
      [ "FILL",
        "anim/tool-fill.png",
        "anim/tool-fill_on.png",
        gcompris.CURSOR_FILL,
        _("Fill")
      ],
      [ "DEL",
        "anim/tool-del.png",
        "anim/tool-del_on.png",
        gcompris.CURSOR_DEL,
        _("Delete")
      ],
      [ "FLIP",
        "anim/tool-flip.png",
        "anim/tool-flip_on.png",
        gcompris.CURSOR_DEFAULT,
        _("Flip")
      ],
      [ "RAISE",
        "anim/tool-up.png",
        "anim/tool-up_on.png",
        gcompris.CURSOR_DEFAULT,
        _("Raise")
      ],
      [ "LOWER",
        "anim/tool-down.png",
        "anim/tool-down_on.png",
        gcompris.CURSOR_DEFAULT,
        _("Lower")
      ],
# FIXME NEED A CLEAN IMPLEMENTATION OF THE ROTATION
#      [ "CCW",
#        "anim/tool-rotation-ccw.png",
#        "anim/tool-rotation-ccw_on.png",
#        gcompris.CURSOR_DEFAULT],
#        _("Rotation left")
#      [ "CW",
#        "anim/tool-rotation-cw.png",
#        "anim/tool-rotation-cw_on.png",
#        gcompris.CURSOR_DEFAULT],
#        _("Rotation right")
       ]

    # keep the tool selected
    self.current_tool=0

    # selected object
    self.selected = None

    # Part of UI : drawing_area is the drawing zone
    # when anim is played, it's masked and playing_area is displayed
    #
    # Drawing area is editing image area
    # Palying area is playing map
    self.drawing_area = [124.0, 20.0, gcompris.BOARD_WIDTH - 15, gcompris.BOARD_HEIGHT - 40]
    self.playing_area = [124.0, 20.0, gcompris.BOARD_WIDTH - 15, gcompris.BOARD_HEIGHT - 40]

    # Part of UI
    # The root items
    self.root_toolitem  = []

    # used to handle draw creation of object
    self.created_object = None

  def start(self):

    # GCompris initialisation
    self.gcomprisBoard.level=1
    self.gcomprisBoard.maxlevel=1
    self.gcomprisBoard.sublevel=0
    self.gcomprisBoard.number_of_sublevel=0

    gcompris.set_default_background(self.gcomprisBoard.canvas.get_root_item())

    # Create our rootitem. We put each canvas item in it so at the end we
    # only have to kill it. The canvas deletes all the items it contains automaticaly.
    self.rootitem = goocanvas.Group(
      parent =  self.gcomprisBoard.canvas.get_root_item())

    self.doc = Document(self)

    # initialisation
    self.draw_tools()
    self.draw_animtools()

    self.doc.timeline.draw()
    if self.gcomprisBoard.mode == 'draw':
      self.doc.timeline.hide()

    self.color_rootitem = goocanvas.Group(
      parent =  self.gcomprisBoard.canvas.get_root_item())
    self.color = Color(self.color_rootitem, self.drawing_area)
    self.color.draw()

    self.draw_drawing_area()
    self.draw_playing_area()

    gcompris.bar_set(gcompris.BAR_JOURNAL)
    gcompris.bar_location(10, -1, 0.6)

    if gcompris.sugar_detected():
      journal_file = gcompris.sugar_load()
      if journal_file:
        fles.doc.file_to_anim(journal_file)

  def end(self):
    # stop the animation
    if self.running:
      self.playing_stop()

    if self.timeout:
      gobject.source_remove(self.timeout)
    self.timeout = 0

    if gcompris.sugar_detected():
      fd, tmp_file = tempfile.mkstemp(dir='/tmp')
      os.close(fd)
      os.chmod(tmp_file, 0644)
      fles.doc.anim_to_file(tmp_file)
      gcompris.sugar_save(tmp_file)

    # Remove the root item removes all the others inside it
    gcompris.set_cursor(gcompris.CURSOR_DEFAULT);
    self.rootitem.remove()
    self.color_rootitem.remove()

    del self.doc

  def pause(self, pause):
    return

  def repeat(self):
    pass

  def config(self):
    pass

  def key_press(self, keyval, commit_str, preedit_str):
    #
    # I suppose codec is the stdin one.
    #
    codec = sys.stdin.encoding

    # keyboard shortcuts
    if ( ((keyval == gtk.keysyms.F1)
         or (keyval == gtk.keysyms.l)) and not gcompris.sugar_detected() ):
      gcompris.file_selector_save( self.gcomprisBoard,
                                   self.selector_section, self.file_type,
                                   general_save, self)
    elif ( ((keyval == gtk.keysyms.F2)
           or (keyval == gtk.keysyms.s)) and not gcompris.sugar_detected() ):
      gcompris.file_selector_load( self.gcomprisBoard,
                                   self.selector_section, self.file_type,
                                   general_restore, self)
    elif (keyval == gtk.keysyms.Left):
      self.doc.timeline.previous()
      return True
    elif (keyval == gtk.keysyms.Right):
      self.doc.timeline.next()
      return True

    # Printing
    # Bruno we need a print button !
    #
    # was in anim1, but not print an animation is not interesting.
    elif (keyval == gtk.keysyms.F3):
      pass

    if (not self.selected):
      return False

    if (self.selected.type_name() == "GooCanvasText"):
      self.selected.key_press(keyval, commit_str, preedit_str)
      return True

    # Process shortcuts on non text items
    if ((keyval == gtk.keysyms.BackSpace) or
        (keyval == gtk.keysyms.Delete)):
      self.selected.delete()
      return True

    return False

  # Display the tools
  def draw_tools(self):

    self.root_toolitem = \
      goocanvas.Group(
        parent = self.rootitem,
      )

    goocanvas.Image(
      parent = self.root_toolitem,
      pixbuf = gcompris.utils.load_pixmap("anim/tool-selector.png"),
      x = 5,
      y = 5.0,
      width = 107.0,
      height = 517.0,
      )

    x1 = 11.0
    x2 = 56.0
    y = 11.0
    stepy = 45
    start_tool = 0

    if gcompris.sugar_detected():
        start_tool = 2

    # Display the tools
    for i in range(start_tool,len(self.tools)):

      # Exclude the anim specific buttons
      if self.gcomprisBoard.mode == 'draw':
        if self.tools[i][0]=="MOVIE" or self.tools[i][0]=="PICTURE":
          continue

      if(i%2):
        theX = x2
      else:
        theX = x1

      item = \
        goocanvas.Image(
          parent = self.root_toolitem,
          pixbuf = gcompris.utils.load_pixmap(self.tools[i][1]),
          tooltip = self.tools[i][4],
          x=theX,
          y=y
        )
      gcompris.utils.item_focus_init(item, None)
      item.connect("button_press_event", self.tool_item_event, i)
      if i%2:
        y += stepy

      if(self.tools[i][0]=="SELECT"):
        self.select_tool = item
        self.select_tool_number = i
        # Always select the SELECT item by default
        self.current_tool = i
        self.old_tool_item = item
        self.old_tool_item.props.pixbuf = \
            gcompris.utils.load_pixmap(self.tools[i][2])
        gcompris.set_cursor(self.tools[i][3]);


  # Event when a tool is selected
  # Perform instant action or swich the tool selection
  def tool_item_event(self, item, target, event, tool):

    if event.type == gtk.gdk.BUTTON_PRESS:
      if event.button == 1:
        gcompris.sound.play_ogg("sounds/bleep.wav")
        # Some button have instant effects
        if (self.tools[tool][0] == "SAVE"):
          gcompris.file_selector_save( self.gcomprisBoard,
                                       self.selector_section, self.file_type,
                                       general_save, self)
          return False

        elif (self.tools[tool][0] == "LOAD"):
          gcompris.file_selector_load( self.gcomprisBoard,
                                       self.selector_section, self.file_type,
                                       general_restore, self)
          return False

        elif (self.tools[tool][0] == "IMAGE"):
          self.pos_x = gcompris.BOARD_WIDTH/2
          self.pos_y = gcompris.BOARD_HEIGHT/2

          gcompris.images_selector_start(self.gcomprisBoard,
                                         "dataset",
                                         image_selected,
                                         self);
          return False

        elif (self.tools[tool][0] == "MOVIE"):
          if not self.running:
            self.deselect()

            self.playing_start()
            return False

        elif (self.tools[tool][0] != "SELECT"):
          self.deselect()

        #
        # Normal case, tool button switch
        # -------------------------------

        # Deactivate old button
        self.old_tool_item.props.pixbuf = \
            gcompris.utils.load_pixmap(self.tools[self.current_tool][1])

        # Activate new button
        self.current_tool = tool
        self.old_tool_item = item
        self.old_tool_item.props.pixbuf = \
            gcompris.utils.load_pixmap(self.tools[self.current_tool][2])
        gcompris.set_cursor(self.tools[self.current_tool][3]);


  # Display the drawing area
  def draw_drawing_area(self):

    x1 = self.drawing_area[0]
    y1 = self.drawing_area[1]
    x2 = self.drawing_area[2]
    y2 = self.drawing_area[3]

    item = \
        goocanvas.Rect(
          parent = self.rootitem,
          x = x1,
          y = y1,
          width = x2 - x1,
          height = y2 - y1,
          line_width=2.0,
          fill_color_rgba=0xFFFFFFFFL,
          stroke_color_rgba=0x111199FFL,
          radius_x=5.0,
          radius_y=5.0)
    item.connect("button_press_event", self.item_event)
    item.connect("button_release_event", self.item_event)
    item.connect("motion_notify_event", self.item_event)

    # The CanvasGroup for the edit space.
    self.root_drawingitem = \
      goocanvas.Group(
        parent = self.rootitem,
      )

    # Create the root_anim group which contains all the drawings.
    # At root_anim root, there is a group for each drawings.
    self.root_anim = \
      goocanvas.Group(
        parent = self.rootitem,
      )

    gcompris.utils.item_absolute_move(self.root_anim,
                                      int(self.playing_area[0]-self.drawing_area[0]),
                                      int(self.playing_area[1]-self.drawing_area[1])
                                      )


  # Display the drawing area
  def draw_playing_area(self):

    x1=self.playing_area[0]
    y1=self.playing_area[1]
    x2=self.playing_area[2]
    y2=self.playing_area[3]


    # The CanvasGroup for the playing area.
    self.root_playingitem = \
      goocanvas.Group(
        parent = self.rootitem,
      )
    self.root_playingitem.props.visibility = goocanvas.ITEM_INVISIBLE

    # intervall = 1000 / anim_speed
    self.anim_speed=5

    run = \
      goocanvas.Image(
        parent = self.root_playingitem,
      pixbuf = gcompris.utils.load_pixmap("anim/down.png"),
      x = 15,
      y = 410,
      width = 20,
      height = 20,
      )
    run.connect("button_press_event", self.speed_event,False)

    self.speed_item = \
      goocanvas.Text(
        parent = self.root_playingitem,
      text=self.anim_speed,
      font = gcompris.skin.get_font("gcompris/board/medium"),
      x=52,
      y=420,
      anchor=gtk.ANCHOR_CENTER,
      )


    run = \
      goocanvas.Image(
        parent = self.root_playingitem,
      pixbuf = gcompris.utils.load_pixmap("anim/up.png"),
      x = 70,
      y = 410,
      width = 20,
      height = 20,
      )
    run.connect("button_press_event", self.speed_event,True)

    # And finaly a STOP icon
    run = \
      goocanvas.Image(
        parent = self.root_playingitem,
      pixbuf = gcompris.utils.load_pixmap("anim/draw.svg"),
      x = 16,
      y = 110,
      )
    run.connect("button_press_event", self.stop_event, True)


  def stop_event(self, item, target, event, up):
    if event.type == gtk.gdk.BUTTON_PRESS:
      gcompris.sound.play_ogg("sounds/bleep.wav")
      self.playing_stop()

  def playing_stop(self):
    self.running = False
    gobject.source_remove(self.timeout)
    self.root_toolitem.props.visibility = goocanvas.ITEM_VISIBLE
    self.root_playingitem.props.visibility = goocanvas.ITEM_INVISIBLE
    self.color.show()

  def speed_event(self, item, target, event, up):

    if event.type == gtk.gdk.BUTTON_PRESS:
      gcompris.sound.play_ogg("sounds/bleep.wav")
      if up:
        if self.anim_speed==25:
          return
        else:
          self.anim_speed=self.anim_speed+1
      else:
        if self.anim_speed==1:
          return
        else:
          self.anim_speed=self.anim_speed-1

      gobject.source_remove(self.timeout)
      self.timeout = gobject.timeout_add(1000/self.anim_speed,
                                         self.refresh_loop)
      self.speed_item.set_properties(text = self.anim_speed)

  def deselect(self):
    if self.selected:
      self.selected.deselect()
      self.selected = None

  # Delete the item from the unique list
  # This is called by animitem itself when the object
  # is no more displayed on any time lines.
  def deleteItem(self, item):
    self.doc.animlist.remove(item)

  # Main callback on item comes here first
  # And are then dispatched to the proper functions
  def item_event(self, item, target, event):
    if(event.type == gtk.gdk.BUTTON_PRESS and self.running==True):
      self.playing_stop()
      return False

    if event.type == gtk.gdk.BUTTON_PRESS:

      if event.button == 1:
        gcompris.sound.play_ogg("sounds/bleep.wav")

        animItem = item.get_data("AnimItem")
        if not animItem:
          self.deselect()
        else:
          if self.tools[self.current_tool][0] == "FILL":
            animItem.fill(self.color.fill,
                          self.color.stroke)
          elif self.tools[self.current_tool][0] == "DEL":
            animItem.delete()
          elif self.tools[self.current_tool][0] == "SELECT":
            if self.selected:
              self.selected.deselect()
            animItem.select()
            self.selected = animItem
            self.selected.move_item_event(item,
                                          target,
                                          event)
          elif self.tools[self.current_tool][0] == "RAISE":
            animItem.raise_()
          elif self.tools[self.current_tool][0] == "LOWER":
            animItem.lower()
          elif self.tools[self.current_tool][0] == "CCW":
            animItem.rotate(-10)
          elif self.tools[self.current_tool][0] == "CW":
            animItem.rotate(10)
          elif self.tools[self.current_tool][0] == "FLIP":
            animItem.flip()

        self.created_object = None
        if self.tools[self.current_tool][0] == "FILL_RECT":
          self.created_object = AnimItemRect(self,
                                             event.x, event.y,
                                             self.color.fill, self.color.stroke, 2)
        elif self.tools[self.current_tool][0] == "RECT":
          self.created_object = AnimItemRect(self,
                                             event.x, event.y,
                                             None, self.color.stroke, 7)
        elif self.tools[self.current_tool][0] == "FILL_CIRCLE":
          self.created_object = AnimItemEllipse(self,
                                                event.x, event.y,
                                                self.color.fill, self.color.stroke, 2)
        elif self.tools[self.current_tool][0] == "CIRCLE":
          self.created_object = AnimItemEllipse(self,
                                                event.x, event.y,
                                                None, self.color.stroke, 7)
        elif self.tools[self.current_tool][0] == "LINE":
          self.created_object = AnimItemLine(self,
                                             event.x, event.y,
                                             None, self.color.stroke, 7)
        elif self.tools[self.current_tool][0] == "TEXT":
          self.created_object = AnimItemText(self,
                                             event.x, event.y,
                                             self.color.stroke)

        if self.created_object:
          self.created_object.create_item_event(item,
                                                target)

          # We keep all object in a unique list
          self.doc.animlist.append(self.created_object)

          # Mark it as selected so we can write in it without
          # having to make a real selection and keys shortcuts
          # works
          self.selected = self.created_object

    #
    # MOTION EVENT
    # ------------
    elif (event.type == gtk.gdk.MOTION_NOTIFY
          and event.state & gtk.gdk.BUTTON1_MASK
          and self.created_object):
        self.created_object.create_item_drag_event(item,
                                                   target,
                                                   event)

    elif (event.type == gtk.gdk.MOTION_NOTIFY
          and event.state & gtk.gdk.BUTTON1_MASK
          and self.tools[self.current_tool][0] == "SELECT"
          and self.selected):
        self.selected.move_item_event(item,
                                      target,
                                      event)

    #
    # MOUSE DRAG STOP
    # ---------------
    elif (event.type == gtk.gdk.BUTTON_RELEASE):
      if self.created_object:
        self.created_object.create_item_drag_event(item,
                                                   target,
                                                   event)
        self.created_object = None
        return True
      else:
        if self.selected:
          self.selected.move_item_event(item,
                                        target,
                                        event)

    return False

  def refresh_loop(self):
    self.doc.timeline.next()
    return True

  def playing_start(self):
    if not self.running:
      self.running = True
      self.root_toolitem.props.visibility = goocanvas.ITEM_INVISIBLE
      self.root_playingitem.props.visibility = goocanvas.ITEM_VISIBLE
      self.timeout = gobject.timeout_add(1000/self.anim_speed,
                                         self.refresh_loop)
      self.color.hide()

  def playing_event(self, item, target, event, state):
    if event.type == gtk.gdk.BUTTON_PRESS:
      if state:
        self.playing_start()
      else:
        self.playing_stop()

  # Display the animation tools
  def draw_animtools(self):
    x_left = 8
    y_top  = 472
    minibutton_width = 32
    minibutton_height = 20

    if self.gcomprisBoard.mode == 'draw':
      return

    # Draw the background area

    goocanvas.Image(
      parent = self.rootitem,
      pixbuf = gcompris.utils.load_pixmap("anim/counter.png"),
      x=x_left - -11,
      y=y_top - 20,
      width=70.0,
      height=34.0,
      tooltip = _("Current frame")
      )


class Document:
  """This holds everything releated to the animation itself"""

  def __init__(self, anim_):
    self.anim = anim_
    # This is the time line object that if at to bottom of
    # the screen.
    self.timeline = Timeline(self.anim)
    # The list of all the user's objects
    self.animlist = []

    # This stores the Z order list of items at a given time.
    # The key is the time (number) and the value is
    # a list of items id in the order they appear on screen.
    self.zorder = {}

    # Set to true when the order or the list of object has changed
    self.zorderDirty = False

    # Create our rootitem. We put each canvas item in it so at the end we
    # only have to kill it. The canvas deletes all the items it contains
    # automaticaly.
    self.rootitem = goocanvas.Group(
      parent =  self.anim.gcomprisBoard.canvas.get_root_item())

    self.pickle_protocol = 2
    self.format_string = { 'gcompris' : 'GCompris anim 3 cPikle file' }

  def __del__(self):
    self.rootitem.remove()

  def refresh(self, time):
    # We keep all object in a unique list
    # Here we call them to give them a chance to
    # display them if they have to
    for item in self.animlist:
      item.display_at_time(time)
    self.restore_zorder()


  def zorder_dirty(self):
    self.zorderDirty = True

  def save_zorder(self):
    if not self.zorderDirty:
      return

    z_order = []
    for i in range(self.rootitem.get_n_children()):
      item = self.rootitem.get_child(i)
      if item.props.visibility == goocanvas.ITEM_VISIBLE:
        z_order.append(item.get_data("id"))

    self.zorder[self.timeline.get_time()] = z_order
    self.zorderDirty = False

  def restore_zorder(self):
    z_order = []
    if self.timeline.get_time() in self.zorder:
      z_order = self.zorder[self.timeline.get_time()]
    else:
      return

    # Build the list of items_is present in the image
    present_items = []
    for i in range(self.rootitem.get_n_children()):
      item = self.rootitem.get_child(i)
      if item:
        present_items.append( item.get_data("id") )

    # Remove items in z_order that are not in present_items
    z_order = [item for item in z_order if item in present_items]

    for z_item_id in z_order:
      for i in range(self.rootitem.get_n_children()):
        item = self.rootitem.get_child(i)
        if item:
          item_id = item.get_data("id")
          if ( item_id == z_item_id ):
            z_index = z_order.index(item_id)
            if ( i != z_index ):
              try:
                self.rootitem.move_child(i, z_index);
                break
              except ValueError:
                pass

  def anim_to_file(self, filename):

    file = open(filename, 'wb')

    # Save the descriptif frame:
    pickle.dump(self.format_string['gcompris'], file, self.pickle_protocol)

    # Save the last mark
    pickle.dump(self.timeline.get_lastmark(), file, self.pickle_protocol)

    # Save the animation
    pickle.dump(self.animlist, file, self.pickle_protocol)

    # Save the z order
    pickle.dump(self.zorder, file, self.pickle_protocol)

    file.close()


  def file_to_anim(self, filename):

    file = open(filename, 'rb')
    try:
      desc = pickle.load(file)
    except:
      file.close()
      print 'Cannot load ', filename , " as a GCompris animation"
      return

    if type(desc) == type('str'):
      # string
      if 'desc' != self.format_string['gcompris']:
        if (desc == 'GCompris anim 3 cPikle file'):

          self.anim.deselect()
          for item in self.animlist[:]:
            item.delete()

          self.timeline.set_lastmark(pickle.load(file))
          self.animlist = pickle.load(file)
          for item in self.animlist:
            item.restore(self.anim)

          self.zorder = pickle.load(file)

          # Restore is complete
          self.timeline.set_time(0)
          self.refresh(0)
        else:
          print "ERROR: Unrecognized file format, file", filename, ' has description : ', desc
          file.close()
          return
      else:
        print "ERROR: Unrecognized file format (desc), file", filename, ' has description : ', desc
        file.close()
        return

    elif type(desc) == type(1):
      print filename, 'has no description. Are you sure it\'s', \
          self.format_string['gcompris'],'?'

    file.close()


###############################################
#
#             GLOBAL functions
#
###############################################
def general_save(filename, filetype, fles):
  #print "filename=%s filetype=%s" %(filename, filetype)
  fles.doc.anim_to_file(filename)

def general_restore(filename, filetype, fles):
  #print "general_restore : ", filename, " type ",filetype
  fles.doc.file_to_anim(filename)

def image_selected(image, fles):
  #fles is used because self is not passed through callback
  #print "image selected %s" %(image,)

  # Always display the image at the center of the drawing area
  cx = (fles.drawing_area[2] - fles.drawing_area[0]) / 2
  cy = (fles.drawing_area[3] - fles.drawing_area[1]) / 2

  fles.created_object = AnimItemPixmap(fles, cx, cy, image)

  if fles.created_object:
    fles.created_object.create_item_event(fles.root_drawingitem,
                                          fles.root_drawingitem)

  # We keep all object in a unique list
  fles.doc.animlist.append(fles.created_object)