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# Copyright (C) 2009, Tomeu Vizoso
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
from gettext import gettext as _
import gobject
import gtk
from gaphas import GtkView, Canvas, state
# We'd rather not depend on sugar in this class
from sugar.graphics import style
from thoughtview import ThoughtView
class MindMapView(GtkView):
__gtype_name__ = 'MindMapView'
def __init__(self, model=None):
self._model = None
self._row_changed_sid = None
self._row_deleted_sid = None
self._selected_thought = None
GtkView.__init__(self)
self.canvas = Canvas()
#self.dragging_started.connect(self.__dragging_started_cb)
#self.dragging_finished.connect(self.__dragging_finished_cb)
#self.connect('button-release-event', self.__button_release_event_cb)
if model is not None:
self.model = model
state.observers.add(self.__state_changed_cb)
def __state_changed_cb(self, event):
func, args, dict_ = event
if len(args) > 1 and isinstance(args[1], ThoughtView):
thought_view = args[1]
x, y = thought_view.get_position()
row = self.model.find_by_id(thought_view.id)
if row[2] != x or row[3] != y:
self.model.set(row.iter, 2, x, 3, y)
def __dragging_started_cb(self, **kwargs):
x, y = kwargs['position']
logging.debug('__dragging_started_cb %r %r' % (x, y))
thought = kwargs['element']
thought.dragging = True
self.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND1))
def __dragging_finished_cb(self, **kwargs):
self.window.set_cursor(None)
x, y = kwargs['position']
thought = kwargs['element']
logging.debug('__dragging_finished_cb %r %r' % (x, y))
thought.dragging = False
rect = self.get_allocation()
thought_rect = thought.get_rect()
if (x >= 0 and x + thought_rect.width <= rect.width) and \
(y >= 0 and y + thought_rect.height <= rect.height):
row = self.model.find_by_id(thought.id)
self.model.set(row.iter, 2, x, 3, y)
def __button_release_event_cb(self, widget, event):
logging.debug('button_release_event_cb')
if self._selected_thought is not None:
self._selected_thought.selected = False
self._selected_thought = None
thought = self.get_element_at(event.x, event.y)
if thought is not None:
thought.selected = True
self._selected_thought = thought
return True
def set_model(self, new_model):
logging.debug('set_model %r' % new_model)
if self._model == new_model:
return
if self._model is not None:
self._model.disconnect(self._row_changed_sid)
self._model.disconnect(self._row_deleted_sid)
self._model = new_model
if self._model is not None:
self._row_changed_sid = \
self._model.connect('row-changed', self.__row_changed_cb)
self._row_deleted_sid = \
self._model.connect('row-deleted', self.__row_deleted_cb)
for item in self.canvas.get_all_items():
self.canvas.remove(item)
self._populate_from_model(self._model)
def _populate_from_model(self, rows):
for row in rows:
thought_view = ThoughtView(row[0], row[1], row[2], row[3], row[4])
self._populate_from_model(row.iterchildren())
self.add_element(thought_view)
def get_model(self):
return self._model
model = property(get_model, set_model)
def __row_changed_cb(self, model, path, iter):
#logging.debug('__row_changed_cb %r' % path)
row = model[iter]
thought_view = self._get_thought_by_id(row[0])
if thought_view is None:
thought_view = ThoughtView(row[0], row[1], row[2], row[3], row[4])
self.canvas.add(thought_view)
else:
thought_view.name = row[1]
thought_view.set_position(row[2], row[3])
thought_view.x = row[2]
thought_view.y = row[3]
thought_view.color = row[4]
self.canvas.request_update(thought_view)
def __row_deleted_cb(self, model, path):
logging.debug('__row_deleted_cb %r' % path)
raise NotImplementedError()
thought_view = self._get_thought_by_id(path[0])
self.remove_element(thought_view)
def _get_thought_by_id(self, thought_id):
for item in self.canvas.get_all_items():
if isinstance(item, ThoughtView) and item.id == thought_id:
return item
return None
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