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# TextBufferMarkup.py
# This file is part of labyrinth
#
# Copyright (C) 2007 - 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 gtk
import gobject
import UndoManager
import pango
ADD_ATTR = 42
REMOVE_ATTR = 43
class ExtendedBuffer(gtk.TextBuffer):
__gsignals__ = dict (set_focus = (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE,
()),
set_attrs = (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_NONE,
(gobject.TYPE_BOOLEAN, gobject.TYPE_BOOLEAN, gobject.TYPE_BOOLEAN, pango.FontDescription)))
def __init__(self, undo_manager, save, save_doc):
super (gtk.TextBuffer, self).__init__()
self.undo = undo_manager
self.connect('insert-text', self.insert_text_cb)
self.connect_after('insert-text', self.apply_attrs_cb)
self.connect('delete-range', self.delete_range_cb)
self.text_elem = save_doc.createTextNode ("Extended")
self.save = save_doc
self.element = save
self.element.appendChild(self.text_elem)
self.bold_tag = self.create_tag("bold", weight=pango.WEIGHT_BOLD)
self.italics_tag = self.create_tag("italics", style=pango.STYLE_ITALIC)
self.underline_tag = self.create_tag("underline", underline=pango.UNDERLINE_SINGLE)
self.current_tags = []
self.requested_tags = []
self.connect_after('mark-set',self.mark_set_cb)
self.bold_block = False
self.italic_block = False
def undo_action (self, action, mode):
self.undo.block ()
self.emit ("set_focus")
if action.undo_type == UndoManager.DELETE_LETTER or action.undo_type == UndoManager.DELETE_WORD:
real_mode = not mode
else:
real_mode = mode
if real_mode == UndoManager.UNDO:
self.delete (self.get_iter_at_offset(action.args[0]),
self.get_iter_at_offset (action.args[0]+action.args[2]))
else:
self.insert (self.get_iter_at_offset(action.args[0]), action.args[1])
self.undo.unblock ()
bold = italics = underline = False
for x in self.current_tags:
if x == "bold":
bold = True
elif x == "italic":
italics = True
elif x == "underline":
underline = True
self.emit("set_attrs_bla", bold, italics, underline, None)
def delete_range_cb (self, buffer, iter, it1):
text = self.get_text (iter, it1)
self.undo.add_undo (UndoManager.UndoAction (self, UndoManager.DELETE_LETTER, self.undo_action,
iter.get_offset(), text, len (text), -1, None, None))
return False
def insert_text_cb (self, buffer, iter, text, length):
self.undo.add_undo (UndoManager.UndoAction (self, UndoManager.INSERT_LETTER, self.undo_action,
iter.get_offset(), text, length, None, None))
return False
def apply_attrs_cb (self, buffer, iter, text, length):
prev_iter = iter.copy()
if not prev_iter.backward_chars(length):
print "Errored"
for x in self.current_tags:
self.apply_tag_by_name(x, prev_iter, iter)
return False
def mark_set_cb(self, buffer, iter, mark, *params):
italics = underline = bold = False
if iter.has_tag(self.bold_tag):
bold = True
elif self.current_tags.count("bold") > 0:
self.current_tags.remove("bold")
if iter.has_tag(self.italics_tag):
italics = True
elif self.current_tags.count("italics") > 0:
self.current_tags.remove("italics")
if iter.has_tag(self.underline_tag):
underline = True
elif self.current_tags.count("underline") > 0:
self.current_tags.remove("underline")
for x in self.requested_tags:
if x == "bold":
bold = True
if x == "italics":
italics = True
if x == "underline":
underline = True
if self.current_tags.count(x) == 0:
self.current_tags.append(x)
self.emit("set_attrs", bold, italics, underline, None)
return False
def update_save (self):
next = self.element.firstChild
while next:
m = next.nextSibling
if next.nodeName == "attribute":
self.element.removeChild (next)
next.unlink ()
next = m
self.text_elem.replaceWholeText (self.get_text())
mark = self.get_insert()
it = self.get_iter_at_mark(mark)
self.element.setAttribute("mark", str(it.get_offset()))
iter = self.get_start_iter()
cur = 0
tags = {}
doc = self.element.ownerDocument
tag_table = self.get_tag_table()
while(1):
if iter.begins_tag(tag_table.lookup("bold")):
tags["bold"] = cur
if iter.ends_tag(tag_table.lookup("bold")):
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
start = tags.pop("bold")
elem.setAttribute("start", str(start))
elem.setAttribute("end", str(cur))
elem.setAttribute("type", "bold")
if iter.begins_tag(tag_table.lookup("italics")):
tags["italics"] = cur
if iter.ends_tag(tag_table.lookup("italics")):
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
start = tags.pop("italics")
elem.setAttribute("start", str(start))
elem.setAttribute("end", str(cur))
elem.setAttribute("type", "italics")
if iter.begins_tag(tag_table.lookup("underline")):
tags["underline"] = cur
if iter.ends_tag(tag_table.lookup("underline")):
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
start = tags.pop("underline")
elem.setAttribute("start", str(start))
elem.setAttribute("end", str(cur))
elem.setAttribute("type", "underline")
cur+=1
if not iter.forward_char():
break
for x in tags:
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
elem.setAttribute("start", str(tags[x]))
elem.setAttribute("end", str(-1))
elem.setAttribute("type", x)
def load(self, node):
mark = None
if node.hasAttribute("mark"):
mark = int(node.getAttribute("mark"))
for n in node.childNodes:
if n.nodeType == n.TEXT_NODE:
if n.data != "LABYRINTH_AUTOGEN_TEXT_REMOVE":
self.set_text(n.data)
elif n.nodeName == "attribute":
attrType = n.getAttribute("type")
start = int(n.getAttribute("start"))
end = int(n.getAttribute("end"))
start_it = self.get_iter_at_offset(start)
if end >= 0:
end_it = self.get_iter_at_offset(end)
else:
end_it = self.get_end_iter()
self.apply_tag_by_name(attrType, start_it, end_it)
else:
print "Error: Unknown type: %s. Ignoring." % n.nodeName
if mark:
ins_iter = self.get_iter_at_offset(mark)
self.move_mark_by_name("insert", ins_iter)
self.move_mark_by_name("selection_bound", ins_iter)
def get_text (self, start=None, end=None, include_hidden_chars=True):
if not start: start=self.get_start_iter()
if not end: end=self.get_end_iter()
return gtk.TextBuffer.get_text(self,start,end)
def undo_attr (self, action, mode):
if mode == UndoManager.UNDO:
if action.undo_type == ADD_ATTR and len(action.args[1]) > 0:
self.remove_tag_by_name(action.args[0], action.args[1][0],
action.args[1][1])
elif action.undo_type == ADD_ATTR and len(action.args[1]) == 0:
self.current_tags.remove(action.args[0])
self.requested_tags.remove(action.args[0])
elif action.undo_type == REMOVE_ATTR and len(action.args[1]) > 0:
self.apply_tag_by_name(action.args[0], action.args[1][0],
action.args[1][1])
else:
self.current_tags.append(action.args[0])
self.requested_tags.append(action.args[0])
else:
if action.undo_type == ADD_ATTR and len(action.args[1]) > 0:
self.apply_tag_by_name(action.args[0], action.args[1][0],
action.args[1][1])
elif action.undo_type == ADD_ATTR and len(action.args[1]) == 0:
self.current_tags.append(action.args[0])
self.requested_tags.append(action.args[0])
elif action.undo_type == REMOVE_ATTR and len(action.args[1]) > 0:
self.remove_tag_by_name(action.args[0], action.args[1][0],
action.args[1][1])
else:
self.current_tags.remove(action.args[0])
self.requested_tags.remove(action.args[0])
bold = italics = underline = False
for x in self.current_tags:
if x == "bold":
bold = True
elif x == "italics":
italics = True
elif x == "underline":
underline = True
self.emit("set_attrs", bold, italics, underline)
def set_bold (self, bold):
selection = self.get_selection_bounds()
if bold:
if len(selection) > 0:
self.apply_tag_by_name("bold", selection[0], selection[1])
else:
self.current_tags.append("bold")
self.requested_tags.append("bold")
self.undo.add_undo(UndoManager.UndoAction(self, ADD_ATTR, self.undo_attr,
"bold", selection))
else:
if len(selection) > 0:
self.remove_tag_by_name("bold", selection[0], selection[1])
else:
self.current_tags.remove("bold")
self.requested_tags.remove("bold")
self.undo.add_undo(UndoManager.UndoAction(self, REMOVE_ATTR, self.undo_attr,
"bold", selection))
def set_italics (self, italics):
selection = self.get_selection_bounds()
if italics:
if len(selection) > 0:
self.apply_tag_by_name("italics", selection[0], selection[1])
else:
self.current_tags.append("italics")
self.requested_tags.append("italics")
self.undo.add_undo(UndoManager.UndoAction(self, ADD_ATTR, self.undo_attr,
"italics", selection))
else:
if len(selection) > 0:
self.remove_tag_by_name("italics", selection[0], selection[1])
else:
self.current_tags.remove("italics")
self.requested_tags.remove("italics")
self.undo.add_undo(UndoManager.UndoAction(self, REMOVE_ATTR, self.undo_attr,
"italics", selection))
def set_underline (self, underline):
selection = self.get_selection_bounds()
if underline:
if len(selection) > 0:
self.apply_tag_by_name("underline", selection[0], selection[1])
else:
self.current_tags.append("underline")
self.requested_tags.append("underline")
self.undo.add_undo(UndoManager.UndoAction(self, ADD_ATTR, self.undo_attr,
"underline", selection))
else:
if len(selection) > 0:
self.remove_tag_by_name("underline", selection[0], selection[1])
else:
self.current_tags.remove("underline")
self.requested_tags.remove("underline")
self.undo.add_undo(UndoManager.UndoAction(self, REMOVE_ATTR, self.undo_attr,
"underline", selection))
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