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#! /usr/bin/env python
# LabelThoughts.py
# This file is part of Labyrinth
#
# Copyright (C) 2010 - Jorge Saldivar <jsaldivar@paraguayeduca.org>
# Martin Abente <mabente@paraguayeduca.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 pango
import utils
import xml.dom
from BaseThought import *
from TextThought import TextThought
class LabelThought (TextThought):
def __init__ (self, coords, pango_context, thought_number, save, undo, loading, background_color, foreground_color, name="label_thought"):
super (LabelThought, self).__init__(coords, pango_context, thought_number, save, undo, loading, background_color, foreground_color, name)
self.edge = True
def can_be_parent(self):
return False
def draw (self, context):
self.recalc_edges ()
if self.edge:
ResizableThought.draw(self, context)
if self.creating:
return
(textx, texty) = (self.min_x, self.min_y)
if self.am_primary:
r, g, b = utils.primary_colors["text"]
elif (self.foreground_color):
r, g, b = utils.gtk_to_cairo_color(self.foreground_color)
else:
r, g ,b = utils.gtk_to_cairo_color(utils.default_colors["text"])
context.set_source_rgb (r, g, b)
self.layout.set_alignment(pango.ALIGN_CENTER)
context.move_to (textx, texty)
context.show_layout (self.layout)
if self.editing:
if self.preedit:
(strong, weak) = self.layout.get_cursor_pos (self.index + self.preedit[2])
else:
(strong, weak) = self.layout.get_cursor_pos (self.index)
(startx, starty, curx,cury) = strong
startx /= pango.SCALE
starty /= pango.SCALE
curx /= pango.SCALE
cury /= pango.SCALE
context.move_to (textx + startx, texty + starty)
context.line_to (textx + startx, texty + starty + cury)
context.stroke ()
context.set_source_rgb (0,0,0)
context.stroke ()
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
if self.text_element.parentNode is not None:
self.text_element.replaceWholeText (self.text)
text = self.extended_buffer.get_text ()
if text:
self.extended_buffer.update_save()
else:
try:
self.element.removeChild(self.extended_buffer.element)
except xml.dom.NotFoundErr:
pass
self.element.setAttribute ("cursor", str(self.index))
self.element.setAttribute ("ul-coords", str(self.ul))
self.element.setAttribute ("lr-coords", str(self.lr))
self.element.setAttribute ("identity", str(self.identity))
self.element.setAttribute ("background-color", utils.color_to_string(self.background_color))
self.element.setAttribute ("foreground-color", utils.color_to_string(self.foreground_color))
self.element.setAttribute ("edge", str(self.edge))
if self.am_selected:
self.element.setAttribute ("current_root", "true")
else:
try:
self.element.removeAttribute ("current_root")
except xml.dom.NotFoundErr:
pass
if self.am_primary:
self.element.setAttribute ("primary_root", "true");
else:
try:
self.element.removeAttribute ("primary_root")
except xml.dom.NotFoundErr:
pass
doc = self.element.ownerDocument
it = self.attributes.get_iterator()
while (1):
r = it.range()
for x in it.get_attrs():
if x.type == pango.ATTR_WEIGHT and x.value == pango.WEIGHT_BOLD:
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
elem.setAttribute("start", str(r[0]))
elem.setAttribute("end", str(r[1]))
elem.setAttribute("type", "bold")
elif x.type == pango.ATTR_STYLE and x.value == pango.STYLE_ITALIC:
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
elem.setAttribute("start", str(r[0]))
elem.setAttribute("end", str(r[1]))
elem.setAttribute("type", "italics")
elif x.type == pango.ATTR_UNDERLINE and x.value == pango.UNDERLINE_SINGLE:
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
elem.setAttribute("start", str(r[0]))
elem.setAttribute("end", str(r[1]))
elem.setAttribute("type", "underline")
elif x.type == pango.ATTR_FONT_DESC:
elem = doc.createElement ("attribute")
self.element.appendChild (elem)
elem.setAttribute("start", str(r[0]))
elem.setAttribute("end", str(r[1]))
elem.setAttribute("type", "font")
elem.setAttribute("value", x.desc.to_string ())
if not it.next():
break
def load (self, node, tar):
self.index = int (node.getAttribute ("cursor"))
self.end_index = self.index
tmp = node.getAttribute ("ul-coords")
self.ul = utils.parse_coords (tmp)
tmp = node.getAttribute ("lr-coords")
self.lr = utils.parse_coords (tmp)
self.width = self.lr[0] - self.ul[0]
self.height = self.lr[1] - self.ul[1]
self.identity = int (node.getAttribute ("identity"))
try:
tmp = node.getAttribute ("background-color")
self.background_color = gtk.gdk.color_parse(tmp)
tmp = node.getAttribute ("foreground-color")
self.foreground_color = gtk.gdk.color_parse(tmp)
except ValueError:
pass
self.am_selected = node.hasAttribute ("current_root")
self.am_primary = node.hasAttribute ("primary_root")
if node.getAttribute ("edge") == "True":
self.edge = True
else:
self.edge = False
for n in node.childNodes:
if n.nodeType == n.TEXT_NODE:
self.text = n.data
elif n.nodeName == "Extended":
self.extended_buffer.load(n)
elif n.nodeName == "attribute":
attrType = n.getAttribute("type")
start = int(n.getAttribute("start"))
end = int(n.getAttribute("end"))
if attrType == "bold":
attr = pango.AttrWeight(pango.WEIGHT_BOLD, start, end)
elif attrType == "italics":
attr = pango.AttrStyle(pango.STYLE_ITALIC, start, end)
elif attrType == "underline":
attr = pango.AttrUnderline(pango.UNDERLINE_SINGLE, start, end)
elif attrType == "font":
font_name = str(n.getAttribute("value"))
pango_font = pango.FontDescription (font_name)
attr = pango.AttrFontDesc (pango_font, start, end)
self.attributes.change(attr)
else:
print "Unknown: "+n.nodeName
self.rebuild_byte_table ()
self.recalc_edges()
def enter(self):
if self.editing:
return
self.orig_text = self.text
self.editing = True
self.edge = True
def leave(self):
if not self.editing:
return
ResizableThought.leave(self)
self.editing = False
self.end_index = self.index
self.emit ("update_links")
self.edge = False
self.recalc_edges ()
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