/
MMapArea.py
1128 lines (1014 loc) · 34.3 KB
/
MMapArea.py
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#! /usr/bin/env python
# MMapArea.py
# This file is part of Labyrinth
#
# Copyright (C) 2006 - Don Scorgie <Don@Scorgie.org>
#
# Labyrinth 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.
#
# Labyrinth 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 Labyrinth; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor,
# Boston, MA 02110-1301 USA
#
import math
import time
import gtk
import pango
import gobject
import gettext
import copy
import cairo
_ = gettext.gettext
import xml.dom.minidom as dom
import Links
import TextThought
import ImageThought
import DrawingThought
import UndoManager
RAD_UP = (- math.pi / 2.)
RAD_DOWN = (math.pi / 2.)
RAD_LEFT = (math.pi)
RAD_RIGHT = (0)
MODE_EDITING = 0
MODE_IMAGE = 1
MODE_DRAW = 2
# Until all references of MODE_MOVING are removed...
MODE_MOVING = 999
TYPE_TEXT = 0
TYPE_IMAGE = 1
TYPE_DRAWING = 2
# TODO: Need to expand to support popup menus
MENU_EMPTY_SPACE = 0
# UNDO actions
UNDO_MOVE = 0
UNDO_CREATE = 1
UNDO_DELETE = 2
UNDO_DELETE_SINGLE = 3
UNDO_COMBINE_DELETE_NEW = 4
UNDO_DELETE_LINK = 5
UNDO_STRENGTHEN_LINK = 6
UNDO_CREATE_LINK = 7
# Note: This is (atm) very broken. It will allow you to create new canvases, but not
# create new thoughts or load existing maps.
# To get it working either fix the TODO list at the bottom of the class, implement the
# necessary features within all the thought types. If you do, please send a patch ;)
# OR: Change this class to MMapAreaNew and MMapAreaOld to MMapArea
class MMapArea (gtk.DrawingArea):
'''A MindMapArea Widget. A blank canvas with a collection of child thoughts.\
It is responsible for processing signals and such from the whole area and \
passing these on to the correct child. It also informs things when to draw'''
__gsignals__ = dict (title_changed = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
(gobject.TYPE_STRING, )),
doc_save = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
(gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT)),
doc_delete = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
()),
change_mode = (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_NONE,
(gobject.TYPE_INT, )),
change_buffer = (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_NONE,
(gobject.TYPE_OBJECT, )),
text_selection_changed = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
(gobject.TYPE_INT, gobject.TYPE_INT, gobject.TYPE_STRING)),
thought_selection_changed = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
(gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT)),
set_focus = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
(gobject.TYPE_PYOBJECT, gobject.TYPE_BOOLEAN)),
set_attrs = (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_NONE,
(gobject.TYPE_BOOLEAN, gobject.TYPE_BOOLEAN, gobject.TYPE_BOOLEAN)))
def __init__(self, undo):
super (MMapArea, self).__init__()
self.thoughts = []
self.links = []
self.selected = []
self.num_selected = 0
self.primary = None
self.editing = None
self.pango_context = self.create_pango_context()
self.undo = undo
self.scale_fac = 1.0
self.translate = False
self.translation = [0.0,0.0]
self.timeout = -1
self.current_cursor = None
self.do_filter = True
self.unending_link = None
self.nthoughts = 0
impl = dom.getDOMImplementation()
self.save = impl.createDocument("http://www.donscorgie.blueyonder.co.uk/labns", "MMap", None)
self.element = self.save.documentElement
self.im_context = gtk.IMMulticontext ()
self.mode = MODE_EDITING
self.old_mode = MODE_EDITING
self.connect ("expose_event", self.expose)
self.connect ("button_release_event", self.button_release)
self.connect ("button_press_event", self.button_down)
self.connect ("motion_notify_event", self.motion)
self.connect ("key_press_event", self.key_press)
self.connect ("key_release_event", self.key_release)
self.connect ("scroll_event", self.scroll)
self.commit_handler = None
self.title_change_handler = None
self.moving = False
self.move_origin = None
self.move_origin_new = None
self.motion = None
self.move_action = None
self.current_root = []
self.rotation = 0
self.set_events (gtk.gdk.KEY_PRESS_MASK |
gtk.gdk.KEY_RELEASE_MASK |
gtk.gdk.BUTTON_PRESS_MASK |
gtk.gdk.BUTTON_RELEASE_MASK |
gtk.gdk.POINTER_MOTION_MASK |
gtk.gdk.SCROLL_MASK
)
self.set_flags (gtk.CAN_FOCUS)
self.background_color = gtk.gdk.color_parse("white")
self.foreground_color = gtk.gdk.color_parse("black")
def transform_coords(self, loc_x, loc_y):
if hasattr(self, "transform"):
return self.transform.transform_point(loc_x, loc_y)
def button_down (self, widget, event):
coords = self.transform_coords (event.get_coords()[0], event.get_coords()[1])
ret = False
obj = self.find_object_at (coords)
if event.button == 2:
self.original_translation = self.translation
self.origin_x = event.x
self.origin_y = event.y
return
if obj and obj.want_motion ():
self.motion = obj
ret = obj.process_button_down (event, self.mode, coords)
if event.button == 1 and self.mode == MODE_EDITING:
self.moving = not (event.state & gtk.gdk.CONTROL_MASK)
self.move_origin = (coords[0],coords[1])
self.move_origin_new = self.move_origin
return ret
if obj:
if event.button == 1 and self.mode == MODE_EDITING:
self.moving = not (event.state & gtk.gdk.CONTROL_MASK)
self.move_origin = (coords[0],coords[1])
self.move_origin_new = self.move_origin
ret = obj.process_button_down (event, self.mode, coords)
elif event.button == 3:
ret = self.create_popup_menu (None, event.get_coords (), MENU_EMPTY_SPACE)
return ret
def undo_move (self, action, mode):
self.undo.block ()
move_thoughts = action.args[1]
old_coords = action.args[0]
new_coords = action.args[2]
move_x = old_coords[0] - new_coords[0]
move_y = old_coords[1] - new_coords[1]
if mode == UndoManager.REDO:
move_x = -move_x
move_y = -move_y
self.unselect_all ()
for t in move_thoughts:
self.select_thought (t, -1)
t.move_by (move_x, move_y)
self.undo.unblock ()
self.invalidate ()
def button_release (self, widget, event):
coords = self.transform_coords (event.get_coords()[0], event.get_coords()[1])
ret = False
if self.translate:
self.translate = False
return True
if self.moving and self.move_action:
self.move_action.add_arg (event.get_coords ())
self.undo.add_undo (self.move_action)
self.move_action = None
self.motion = None
self.moving = False
self.move_origin = None
if self.mode == MODE_EDITING:
self.set_cursor(gtk.gdk.LEFT_PTR)
else:
self.set_cursor(gtk.gdk.CROSSHAIR)
obj = self.find_object_at (coords)
if event.button == 2:
self.undo.add_undo (UndoManager.UndoAction (self, UndoManager.TRANSFORM_CANVAS, \
self.undo_transform_cb,
self.scale_fac, self.scale_fac,
self.original_translation,
self.translation))
if obj:
ret = obj.process_button_release (event, self.unending_link, self.mode, coords)
elif self.unending_link or event.button == 1:
sel = self.selected
thought = self.create_new_thought (coords)
if not thought:
return True
if not self.primary:
self.make_primary (thought)
self.select_thought (thought, None)
else:
self.emit ("change_buffer", thought.extended_buffer)
self.hookup_im_context (thought)
# Creating links adds an undo action. Block it here
self.undo.block ()
for x in self.current_root:
self.create_link (x, None, thought)
for x in self.selected:
x.unselect ()
self.selected = [thought]
thought.select ()
if self.unending_link:
self.unending_link.set_child (thought)
self.links.append (self.unending_link)
element = self.unending_link.get_save_element ()
self.element.appendChild (element)
self.unending_link = None
self.undo.unblock ()
act = UndoManager.UndoAction (self, UNDO_CREATE, self.undo_create_cb, thought, sel, \
self.mode, self.old_mode, event.get_coords())
for l in self.links:
if l.uses (thought):
act.add_arg (l)
if self.undo.peak ().undo_type == UNDO_DELETE_SINGLE:
last_action = self.undo.pop ()
action = UndoManager.UndoAction (self, UNDO_COMBINE_DELETE_NEW, self.undo_joint_cb, \
last_action, act)
self.undo.add_undo (action)
else:
self.undo.add_undo (act)
self.begin_editing (thought)
self.invalidate ()
return ret
def undo_transform_cb (self, action, mode):
if mode == UndoManager.UNDO:
self.scale_fac = action.args[0]
self.translation = action.args[2]
else:
self.scale_fac = action.args[1]
self.translation = action.args[3]
self.invalidate ()
def scroll (self, widget, event):
scale = self.scale_fac
if event.direction == gtk.gdk.SCROLL_UP:
self.scale_fac*=1.2
elif event.direction == gtk.gdk.SCROLL_DOWN:
self.scale_fac/=1.2
self.undo.add_undo (UndoManager.UndoAction (self, UndoManager.TRANSFORM_CANVAS, \
self.undo_transform_cb,
scale, self.scale_fac, self.translation,
self.translation))
self.invalidate()
def undo_joint_cb (self, action, mode):
delete = action.args[0]
create = action.args[1]
if mode == UndoManager.UNDO:
self.undo_create_cb (create, mode)
self.undo_deletion (delete, mode)
else:
self.undo_deletion (delete, mode)
self.undo_create_cb (create, mode)
self.invalidate ()
def key_press (self, widget, event):
if not self.do_filter or not self.im_context.filter_keypress (event):
if self.editing:
if not self.editing.process_key_press (event, self.mode):
return self.global_key_handler (event)
return True
if len(self.selected) != 1 or not self.selected[0].process_key_press (event, self.mode):
return self.global_key_handler (event)
return True
def key_release (self, widget, event):
self.im_context.filter_keypress (event)
return True
def motion (self, widget, event):
coords = self.transform_coords (event.get_coords()[0], event.get_coords()[1])
if self.motion:
if self.motion.handle_motion (event, self.mode, coords):
return True
obj = self.find_object_at (coords)
if self.unending_link:
self.unending_link.set_end (coords)
self.invalidate ()
return True
elif self.moving and not self.editing and not self.unending_link:
self.set_cursor(gtk.gdk.FLEUR)
if not self.move_action:
self.move_action = UndoManager.UndoAction (self, UNDO_MOVE, self.undo_move, self.move_origin,
self.selected)
for t in self.selected:
t.move_by (coords[0] - self.move_origin_new[0], coords[1] - self.move_origin_new[1])
self.move_origin_new = (coords[0], coords[1])
self.invalidate ()
return True
elif self.editing and event.state & gtk.gdk.BUTTON1_MASK and not obj:
# We were too quick with the movement. We really actually want to
# create the unending link
self.create_link (self.editing)
self.finish_editing ()
elif event.state & gtk.gdk.BUTTON2_MASK:
self.translate = True
self.translation[0] -= (self.origin_x - event.x) / self.scale_fac
self.translation[1] -= (self.origin_y - event.y) / self.scale_fac
self.origin_x = event.x
self.origin_y = event.y
self.invalidate()
return True
if obj:
obj.handle_motion (event, self.mode, coords)
elif self.mode == MODE_IMAGE or self.mode == MODE_DRAW:
self.set_cursor(gtk.gdk.CROSSHAIR)
else:
self.set_cursor(gtk.gdk.LEFT_PTR)
def find_object_at (self, coords):
for x in reversed(self.thoughts):
if x.includes (coords, self.mode):
return x
for x in self.links:
if x.includes (coords, self.mode):
return x
return None
def realize_cb (self, widget):
self.disconnect (self.realize_handle)
if self.mode == MODE_IMAGE or self.mode == MODE_DRAW:
self.set_cursor (gtk.gdk.CROSSHAIR)
else:
self.set_cursor (gtk.gdk.LEFT_PTR)
return False
def set_cursor(self, kind):
new_cursor = CursorFactory().get_cursor(kind)
if self.current_cursor != new_cursor:
self.current_cursor = new_cursor
self.window.set_cursor(self.current_cursor)
def set_mode (self, mode):
if mode == self.mode:
return
self.old_mode = self.mode
self.mode = mode
self.finish_editing ()
self.hookup_im_context ()
if self.window:
if mode == MODE_IMAGE or mode == MODE_DRAW:
self.set_cursor (gtk.gdk.CROSSHAIR)
else:
self.set_cursor (gtk.gdk.LEFT_PTR)
else:
self.realize_handle = self.connect ("realize", self.realize_cb)
self.mode = mode
if self.window:
self.invalidate ()
def title_changed_cb (self, widget, new_title):
self.emit ("title_changed", new_title)
def make_primary (self, thought):
if self.primary:
print "Warning: Already have a primary root"
if self.title_change_handler:
self.primary.disconnect (self.title_change_handler)
self.title_change_handler = thought.connect ("title_changed", self.title_changed_cb)
self.emit ("title_changed", thought.text)
self.primary = thought
thought.make_primary ()
def hookup_im_context (self, thought = None):
if self.commit_handler:
self.im_context.disconnect (self.commit_handler)
self.im_context.disconnect (self.delete_handler)
self.im_context.disconnect (self.preedit_changed_handler)
self.im_context.disconnect (self.preedit_end_handler)
self.im_context.disconnect (self.preedit_start_handler)
self.im_context.disconnect (self.retrieve_handler)
self.commit_handler = None
if thought:
try:
self.commit_handler = self.im_context.connect ("commit", thought.commit_text, self.mode)
self.delete_handler = self.im_context.connect ("delete-surrounding", thought.delete_surroundings, self.mode)
self.preedit_changed_handler = self.im_context.connect ("preedit-changed", thought.preedit_changed, self.mode)
self.preedit_end_handler = self.im_context.connect ("preedit-end", thought.preedit_end, self.mode)
self.preedit_start_handler = self.im_context.connect ("preedit-start", thought.preedit_start, self.mode)
self.retrieve_handler = self.im_context.connect ("retrieve-surrounding", thought.retrieve_surroundings, \
self.mode)
self.do_filter = True
except AttributeError:
self.do_filter = False
else:
self.do_filter = False
def unselect_all (self):
self.hookup_im_context ()
for t in self.selected:
t.unselect ()
self.selected = []
def select_link (self, link, modifiers):
if modifiers and modifiers & gtk.gdk.SHIFT_MASK and len (self.selected) > 1 and self.selected.count (link) > 0:
self.selected.remove (link)
link.unselect ()
return
self.hookup_im_context()
if self.editing:
self.finish_editing ()
if modifiers and (modifiers & gtk.gdk.SHIFT_MASK or modifiers == -1):
if self.selected.count (link) == 0:
self.selected.append (link)
else:
for x in self.selected:
x.unselect ()
self.selected = [link]
link.select()
self.emit("change_buffer", None)
def select_thought (self, thought, modifiers):
if modifiers and modifiers & gtk.gdk.SHIFT_MASK and len (self.selected) > 1 and self.selected.count (thought) > 0:
self.selected.remove (thought)
thought.unselect ()
return
self.hookup_im_context ()
if self.editing:
self.finish_editing ()
if thought in self.thoughts:
self.thoughts.remove (thought)
self.thoughts.append(thought)
if modifiers and (modifiers & gtk.gdk.SHIFT_MASK or modifiers == -1):
if self.selected.count (thought) == 0:
self.selected.append (thought)
else:
for x in self.selected:
x.unselect ()
self.selected = [thought]
self.current_root = []
for x in self.selected:
if x.can_be_parent():
self.current_root.append(x)
thought.select ()
if len(self.selected) == 1:
self.emit ("thought_selection_changed", thought.background_color, thought.foreground_color)
try:
self.emit ("change_buffer", thought.extended_buffer)
except AttributeError:
self.emit ("change_buffer", None)
self.hookup_im_context (thought)
else:
self.emit ("change_buffer", None)
def begin_editing (self, thought):
if self.editing and thought != self.editing:
self.finish_editing ()
do_edit = thought.begin_editing ()
if do_edit:
self.editing = thought
def undo_link_action (self, action, mode):
self.undo.block ()
if self.editing:
self.finish_editing ()
link = action.args[0]
if action.undo_type == UNDO_CREATE_LINK:
if mode == UndoManager.REDO:
self.element.appendChild (link.element)
self.links.append (link)
else:
self.delete_link (link)
elif action.undo_type == UNDO_DELETE_LINK:
if mode == UndoManager.UNDO:
self.element.appendChild (link.element)
self.links.append (link)
else:
self.delete_link (link)
elif action.undo_type == UNDO_STRENGTHEN_LINK:
if mode == UndoManager.UNDO:
link.set_strength (action.args[1])
else:
link.set_strength (action.args[2])
self.undo.unblock ()
self.invalidate ()
def connect_link (self, link):
link.connect ("select_link", self.select_link)
link.connect ("update_view", self.update_view)
link.connect ("popup_requested", self.create_popup_menu)
def create_link (self, thought, thought_coords = None, child = None, child_coords = None, strength = 2):
if child:
for x in self.links:
if x.connects (thought, child):
if x.change_strength (thought, child):
self.delete_link (x)
return
link = Links.Link (self.save, parent = thought, child = child, strength = strength)
self.connect_link (link)
element = link.get_save_element ()
self.element.appendChild (element)
self.links.append (link)
return link
else:
if self.unending_link:
del self.unending_link
self.unending_link = Links.Link (self.save, parent = thought, start_coords = thought_coords,
end_coords = child_coords, strength = strength)
def set_mouse_cursor_cb (self, thought, cursor_type):
if not self.moving:
self.set_cursor (cursor_type)
def update_links_cb (self, thought):
for x in self.links:
if x.uses (thought):
x.find_ends ()
def claim_unending_link (self, thought):
if not self.unending_link:
return
if self.unending_link.parent == thought:
del self.unending_link
self.unending_link = None
return
for x in self.links:
if x.connects (self.unending_link.parent, thought):
old_strength = x.strength
x.change_strength (self.unending_link.parent, thought)
new_strength = x.strength
self.undo.add_undo (UndoManager.UndoAction (self, UNDO_STRENGTHEN_LINK, self.undo_link_action, x, \
old_strength, new_strength))
del self.unending_link
self.unending_link = None
return
self.undo.add_undo (UndoManager.UndoAction (self, UNDO_CREATE_LINK, self.undo_link_action, self.unending_link))
self.unending_link.set_child (thought)
self.links.append (self.unending_link)
element = self.unending_link.get_save_element ()
self.element.appendChild (element)
self.unending_link = None
def create_popup_menu (self, thought, coords, menu_type):
# TODO: FIXME
print "Popup menu requested"
return
def finish_editing (self, thought = None):
if not self.editing or (thought and thought != self.editing):
return
self.editing.finish_editing ()
self.editing = None
def update_view (self, thought):
self.invalidate ()
def invalidate (self):
'''Helper function to invalidate the entire screen, forcing a redraw'''
alloc = self.get_allocation ()
rect = gtk.gdk.Rectangle (0, 0, alloc.width, alloc.height)
self.window.invalidate_rect (rect, True)
def expose (self, widget, event):
'''Expose event. Calls the draw function'''
context = self.window.cairo_create ()
self.draw (event, context)
return False
def draw (self, event, context):
'''Draw the map and all the associated thoughts'''
context.rectangle (event.area.x, event.area.y,
event.area.width, event.area.height)
context.clip ()
context.set_source_rgb (1.0,1.0,1.0)
context.move_to (event.area.x,event.area.y)
context.paint ()
context.set_source_rgb (0.0,0.0,0.0)
alloc = self.get_allocation ()
context.translate(alloc.width/2., alloc.height/2.)
context.scale(self.scale_fac, self.scale_fac)
context.translate(-alloc.width/2., -alloc.height/2.)
context.translate(self.translation[0], self.translation[1])
for l in self.links:
l.draw (context)
if self.unending_link:
self.unending_link.draw (context)
for t in self.thoughts:
t.draw (context)
self.transform = context.get_matrix()
self.transform.invert()
def undo_create_cb (self, action, mode):
self.undo.block ()
if mode == UndoManager.UNDO:
if action.args[0] == self.editing:
self.editing = None
self.unselect_all ()
for t in action.args[1]:
self.select_thought (t, -1)
self.delete_thought (action.args[0])
self.emit ("change_mode", action.args[3])
else:
self.emit ("change_mode", action.args[2])
thought = action.args[0]
self.thoughts.append (thought)
for t in action.args[1]:
self.unselect_all ()
self.select_thought (t, -1)
self.hookup_im_context (thought)
self.emit ("change_buffer", thought.extended_buffer)
self.element.appendChild (thought.element)
for l in action.args[5:]:
self.links.append (l)
self.element.appendChild (l.element)
self.begin_editing (thought)
self.emit ("set_focus", None, False)
self.undo.unblock ()
self.invalidate ()
def create_new_thought (self, coords, thought_type = None, loading = False):
if self.editing:
self.editing.finish_editing ()
if thought_type!= None:
type = thought_type
else:
type = self.mode
if type == TYPE_TEXT:
thought = TextThought.TextThought (coords, self.pango_context, self.nthoughts, self.save, self.undo, loading, self.background_color, self.foreground_color)
elif type == TYPE_IMAGE:
thought = ImageThought.ImageThought (coords, self.pango_context, self.nthoughts, self.save, self.undo, loading, self.background_color)
elif type == TYPE_DRAWING:
thought = DrawingThought.DrawingThought (coords, self.pango_context, self.nthoughts, self.save, self.undo, \
loading,self.background_color, self.foreground_color)
if not thought.okay ():
return None
if type == TYPE_IMAGE:
self.emit ("change_mode", self.old_mode)
self.nthoughts += 1
element = thought.element
self.element.appendChild (thought.element)
thought.connect ("select_thought", self.select_thought)
thought.connect ("begin_editing", self.begin_editing)
thought.connect ("popup_requested", self.create_popup_menu)
thought.connect ("create_link", self.create_link)
thought.connect ("claim_unending_link", self.claim_unending_link)
thought.connect ("update_view", self.update_view)
thought.connect ("finish_editing", self.finish_editing)
thought.connect ("delete_thought", self.delete_thought)
thought.connect ("text_selection_changed", self.text_selection_cb)
thought.connect ("change_mouse_cursor", self.set_mouse_cursor_cb)
thought.connect ("update_links", self.update_links_cb)
thought.connect ("grab_focus", self.regain_focus_cb)
thought.connect ("update-attrs", self.update_attr_cb)
self.thoughts.append (thought)
return thought
def regain_focus_cb (self, thought, ext):
self.emit ("set_focus", None, ext)
def update_attr_cb (self, widget, bold, italics, underline):
self.emit ("set_attrs", bold, italics, underline)
def delete_thought (self, thought):
action = UndoManager.UndoAction (self, UNDO_DELETE_SINGLE, self.undo_deletion, [thought])
if thought.element in self.element.childNodes:
self.element.removeChild (thought.element)
self.thoughts.remove (thought)
try:
self.selected.remove (thought)
except:
pass
if self.editing == thought:
self.hookup_im_context ()
self.editing = None
if self.primary == thought:
thought.disconnect (self.title_change_handler)
self.title_change_handler = None
self.primary = None
if self.thoughts:
self.make_primary (self.thoughts[0])
rem_links = []
for l in self.links:
if l.uses (thought):
action.add_arg (l)
rem_links.append (l)
for l in rem_links:
self.delete_link (l)
self.undo.add_undo (action)
return True
def undo_deletion (self, action, mode):
self.undo.block ()
if mode == UndoManager.UNDO:
self.unselect_all ()
for t in action.args[0]:
self.thoughts.append (t)
self.select_thought (t, -1)
self.element.appendChild (t.element)
for l in action.args[1:]:
self.links.append (l)
self.element.appendChild (l.element)
if action.undo_type == UNDO_DELETE_SINGLE:
self.begin_editing (action.args[0][0])
self.emit ("change_buffer", action.args[0][0].extended_buffer)
if not self.primary:
self.make_primary (action.args[0][0])
else:
self.emit ("change_buffer", None)
else:
for t in action.args[0]:
self.delete_thought (t)
for l in action.args[1:]:
self.delete_link (l)
self.emit ("set_focus", None, False)
self.undo.unblock ()
self.invalidate ()
def delete_selected_elements (self):
if len(self.selected) == 0:
return
action = UndoManager.UndoAction (self, UNDO_DELETE, self.undo_deletion, copy.copy(self.selected))
# delete_thought as a callback adds it's own undo action. Block that here
self.undo.block ()
tmp = self.selected
t = tmp.pop()
while t:
if t in self.thoughts:
for l in self.links:
if l.uses (t):
action.add_arg (l)
self.delete_thought (t)
if t in self.links:
self.delete_link (t)
if len (tmp) == 0:
t = None
else:
t = tmp.pop()
self.undo.unblock ()
self.undo.add_undo (action)
self.invalidate ()
def delete_link (self, link):
if link.element in self.element.childNodes:
self.element.removeChild (link.element)
#link.element.unlink ()
self.links.remove (link)
def popup_menu_key (self, event):
print "Popup Menu Key"
def find_related_thought (self, radians):
# Find thought within angle
best = None
bestangle = 1000.
bestdist = 10000.
def do_find (one, two, currentangle, curdist, sensitivity):
init_x = (one.ul[0] + one.lr[0]) / 2.
init_y = (one.ul[1] + one.lr[1]) / 2.
other_x = (two.ul[0] + two.lr[0]) / 2.
other_y = (two.ul[1] + two.lr[1]) / 2.
angle = math.atan2 ((other_y - init_y), (other_x - init_x))
while angle > math.pi:
angle -= math.pi
while angle < -math.pi:
angle += math.pi
# We have to special-case left due to stupidity of tan's
# We shift it by pi radians
if radians == RAD_LEFT:
relangle = abs((angle+math.pi) - (radians+math.pi))
if relangle > math.pi*2.:
relangle -= math.pi*2.
else:
relangle = abs(angle - radians)
newdist = math.sqrt ((init_x - other_x)**2 + (init_y - other_y)**2)
magicnum = newdist + (50. * relangle)
# Used for debugging. Spits out lots of useful info
# to determine interesting things about the thought relations
#print "angle: "+str(angle)+" rel: "+str(magicnum)+" rads: "+str(radians),
#print " , "+str(math.pi / 3.0)+" , "+str(currentangle)+"\n: "+str(relangle)
if (relangle < sensitivity) and \
(magicnum < currentangle):
return (magicnum, newdist)
return (currentangle, curdist)
if len(self.selected) != 1:
return None
initial = self.selected[0]
for x in self.links:
if x.parent == initial:
other = x.child
elif x.child == initial:
other = x.parent
else:
continue
(curr, dist) = do_find (initial, other, bestangle, bestdist, math.pi/3.)
if curr < bestangle:
bestangle = curr
best = other
bestdist = dist
if not best:
for x in self.thoughts:
if x == self.selected[0]:
continue
(curr, dist) = do_find (initial, x, bestangle, bestdist, math.pi/4.)
if curr < bestangle:
best = x
bestangle = curr
bestdist = dist
return best
def global_key_handler (self, event):
thought = None
if event.keyval == gtk.keysyms.Up:
thought = self.find_related_thought (RAD_UP)
elif event.keyval == gtk.keysyms.Down:
thought = self.find_related_thought (RAD_DOWN)
elif event.keyval == gtk.keysyms.Left:
thought = self.find_related_thought (RAD_LEFT)
elif event.keyval == gtk.keysyms.Right:
thought = self.find_related_thought (RAD_RIGHT)
elif event.keyval == gtk.keysyms.Delete:
self.delete_selected_elements ()
elif event.keyval == gtk.keysyms.BackSpace:
self.delete_selected_elements ()
elif event.keyval == gtk.keysyms.Menu:
self.popup_menu_key (event)
elif event.keyval == gtk.keysyms.a and event.state & gtk.gdk.CONTROL_MASK:
self.unselect_all ()
for t in self.thoughts:
t.select ()
self.selected.append (t)
else:
return False
if thought:
self.select_thought (thought, None)
self.invalidate ()
return True
def load_thought (self, node, type):
thought = self.create_new_thought (None, type, loading = True)
thought.load (node)
def load_link (self, node):
link = Links.Link (self.save)
self.connect_link (link)
link.load (node)
self.links.append (link)
element = link.get_save_element ()
self.element.appendChild (element)
def load_thyself (self, top_element, doc):
for node in top_element.childNodes:
if node.nodeName == "thought":
self.load_thought (node, TYPE_TEXT)
elif node.nodeName == "image_thought":
self.load_thought (node, TYPE_IMAGE)
elif node.nodeName == "drawing_thought":
self.load_thought (node, TYPE_DRAWING)
elif node.nodeName == "link":
self.load_link (node)
else:
print "Warning: Unknown element type. Ignoring: "+node.nodeName
self.finish_loading ()
def finish_loading (self):
# Possible TODO: This all assumes we've been given a proper,
# consistant file. It should fallback nicely, but...
# First, find the primary root:
for t in self.thoughts:
if t.am_primary:
self.make_primary (t)
if t.am_selected:
self.selected.append (t)
t.select ()
if t.editing:
self.begin_editing (t)
if t.identity >= self.nthoughts:
self.nthoughts = t.identity + 1
if self.selected:
self.current_root = self.selected
else:
self.current_root = [self.primary]
if len(self.selected) == 1:
self.emit ("change_buffer", self.selected[0].extended_buffer)
self.hookup_im_context (self.selected[0])
else:
self.emit ("change_buffer", None)
del_links = []
for l in self.links:
if (l.parent_number == -1 and l.child_number == -1) or \
(l.parent_number == l.child_number):
del_links.append (l)
continue
parent = child = None
for t in self.thoughts:
if t.identity == l.parent_number:
parent = t
elif t.identity == l.child_number:
child = t
if parent and child:
break
l.set_parent_child (parent, child)
if not l.parent or not l.child:
del_links.append (l)
for l in del_links:
self.delete_link (l)
def save_thyself (self):
for t in self.thoughts:
t.update_save ()
for l in self.links:
l.update_save ()
if len(self.thoughts) > 0:
self.emit ("doc_save", self.save, self.element)
else:
self.emit ("doc_delete")
def text_selection_cb (self, thought, start, end, text):
self.emit ("text_selection_changed", start, end, text)
def copy_clipboard (self, clip):
if len (self.selected) != 1:
return
self.selected[0].copy_text (clip)
def cut_clipboard (self, clip):