281 lines
9.5 KiB
Python
281 lines
9.5 KiB
Python
# Copyright (C) 2006, Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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#!/usr/bin/env python
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import sha
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import dbus
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import dbus.service
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import dbus.glib
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import gtk
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import gobject
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import pango
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import logging
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from sugar.chat.Emoticons import Emoticons
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from sugar.chat.ChatToolbar import ChatToolbar
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from sugar.chat.ChatEditor import ChatEditor
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from sugar.presence import PresenceService
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import richtext
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PANGO_SCALE = 1024 # Where is this defined?
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class Chat(gtk.VBox):
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SERVICE_TYPE = "_olpc_chat._tcp"
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SERVICE_PORT = 6100
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TEXT_MODE = 0
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SKETCH_MODE = 1
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def __init__(self):
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gtk.VBox.__init__(self, False, 6)
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self._pservice = PresenceService.get_instance()
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self._stream_writer = None
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self.set_border_width(12)
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chat_vbox = gtk.VBox()
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chat_vbox.set_spacing(6)
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self._chat_sw = gtk.ScrolledWindow()
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self._chat_sw.set_shadow_type(gtk.SHADOW_IN)
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self._chat_sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_ALWAYS)
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self._chat_view = richtext.RichTextView()
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self._chat_view.connect("link-clicked", self.__link_clicked_cb)
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self._chat_view.set_editable(False)
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self._chat_view.set_cursor_visible(False)
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self._chat_view.set_pixels_above_lines(7)
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self._chat_view.set_left_margin(5)
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self._chat_sw.add(self._chat_view)
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self._chat_view.show()
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chat_vbox.pack_start(self._chat_sw)
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self._chat_sw.show()
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self.pack_start(chat_vbox)
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chat_vbox.show()
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self._mode = Chat.TEXT_MODE
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self._editor = ChatEditor(self, ChatEditor.TEXT_MODE)
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toolbar = ChatToolbar(self._editor)
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self.pack_start(toolbar, False)
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toolbar.show()
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self.pack_start(self._editor, False)
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self._editor.show()
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self.connect("key-press-event", self.__key_press_event_cb)
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def __key_press_event_cb(self, window, event):
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if event.keyval == gtk.keysyms.s and \
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event.state & gtk.gdk.CONTROL_MASK:
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if self.get_mode() == Chat.SKETCH_MODE:
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self.set_mode(Chat.TEXT_MODE)
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elif self.get_mode() == Chat.TEXT_MODE:
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self.set_mode(Chat.SKETCH_MODE)
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def get_mode(self):
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return self._mode
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def set_mode(self, mode):
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self._mode = mode
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if self._mode == Chat.TEXT_MODE:
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self._editor.set_mode(ChatEditor.TEXT_MODE)
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elif self._mode == Chat.SKETCH_MODE:
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self._editor.set_mode(ChatEditor.SKETCH_MODE)
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def __get_browser_shell(self):
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bus = dbus.SessionBus()
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proxy_obj = bus.get_object('com.redhat.Sugar.Browser', '/com/redhat/Sugar/Browser')
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self._browser_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.BrowserShell')
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def __link_clicked_cb(self, view, address):
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self.__get_browser_shell().open_browser(address)
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def _scroll_chat_view_to_bottom(self):
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# Only scroll to bottom if the view is already close to the bottom
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vadj = self._chat_sw.get_vadjustment()
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if vadj.value + vadj.page_size > vadj.upper * 0.8:
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vadj.value = vadj.upper - vadj.page_size
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self._chat_sw.set_vadjustment(vadj)
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def _message_inserted(self):
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gobject.idle_add(self._scroll_chat_view_to_bottom)
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def _insert_buddy(self, buf, buddy):
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# Stuff in the buddy icon, if we have one for this buddy
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icon = buddy.get_icon_pixbuf()
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if icon:
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rise = int(icon.get_height() / 4) * -1
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hash_string = "%s-%s" % (buddy.get_name(), buddy.get_ip4_address())
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sha_hash = sha.new()
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sha_hash.update(hash_string)
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tagname = "buddyicon-%s" % sha_hash.hexdigest()
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if not buf.get_tag_table().lookup(tagname):
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buf.create_tag(tagname, rise=(rise * PANGO_SCALE))
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aniter = buf.get_end_iter()
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buf.insert_pixbuf(aniter, icon)
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aniter.backward_char()
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enditer = buf.get_end_iter()
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buf.apply_tag_by_name(tagname, aniter, enditer)
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# Stick in the buddy's nickname
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if not buf.get_tag_table().lookup("nickname"):
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buf.create_tag("nickname", weight=pango.WEIGHT_BOLD)
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aniter = buf.get_end_iter()
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offset = aniter.get_offset()
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buf.insert(aniter, " " + buddy.get_name() + ": ")
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enditer = buf.get_iter_at_offset(offset)
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buf.apply_tag_by_name("nickname", aniter, enditer)
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def _insert_rich_message(self, buddy, msg):
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msg = Emoticons.get_instance().replace(msg)
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buf = self._chat_view.get_buffer()
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self._insert_buddy(buf, buddy)
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serializer = richtext.RichTextSerializer()
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serializer.deserialize(msg, buf)
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aniter = buf.get_end_iter()
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buf.insert(aniter, "\n")
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self._message_inserted()
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def _insert_sketch(self, buddy, svgdata):
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"""Insert a sketch object into the chat buffer."""
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pbl = gtk.gdk.PixbufLoader("svg")
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pbl.write(svgdata)
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pbl.close()
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pbuf = pbl.get_pixbuf()
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buf = self._chat_view.get_buffer()
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self._insert_buddy(buf, buddy)
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rise = int(pbuf.get_height() / 3) * -1
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sha_hash = sha.new()
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sha_hash.update(svgdata)
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tagname = "sketch-%s" % sha_hash.hexdigest()
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if not buf.get_tag_table().lookup(tagname):
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buf.create_tag(tagname, rise=(rise * PANGO_SCALE))
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aniter = buf.get_end_iter()
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buf.insert_pixbuf(aniter, pbuf)
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aniter.backward_char()
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enditer = buf.get_end_iter()
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buf.apply_tag_by_name(tagname, aniter, enditer)
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aniter = buf.get_end_iter()
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buf.insert(aniter, "\n")
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self._message_inserted()
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def _get_first_richtext_chunk(self, msg):
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"""Scan the message for the first richtext-tagged chunk and return it."""
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rt_last = -1
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tag_rt_start = "<richtext>"
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tag_rt_end = "</richtext>"
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rt_first = msg.find(tag_rt_start)
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length = -1
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if rt_first >= 0:
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length = len(msg)
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rt_last = msg.find(tag_rt_end, rt_first)
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if rt_first >= 0 and rt_last >= (rt_first + len(tag_rt_start)) and length > 0:
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return msg[rt_first:rt_last + len(tag_rt_end)]
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return None
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def _get_first_sketch_chunk(self, msg):
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"""Scan the message for the first SVG-tagged chunk and return it."""
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svg_last = -1
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tag_svg_start = "<svg"
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tag_svg_end = "</svg>"
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desc_start = msg.find("<?xml version='1.0' encoding='UTF-8'?>")
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if desc_start < 0:
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return None
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ignore = msg.find("<!DOCTYPE svg")
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if ignore < 0:
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return None
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svg_first = msg.find(tag_svg_start)
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length = -1
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if svg_first >= 0:
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length = len(msg)
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svg_last = msg.find(tag_svg_end, svg_first)
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if svg_first >= 0 and svg_last >= (svg_first + len(tag_svg_start)) and length > 0:
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return msg[desc_start:svg_last + len(tag_svg_end)]
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return None
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def recv_message(self, message):
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"""Insert a remote chat message into the chat buffer."""
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[nick, msg] = Chat.deserialize_message(message)
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buddy = self._pservice.get_buddy_by_name(nick)
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if not buddy:
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logging.error('The buddy %s is not present.' % (nick))
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return
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# FIXME a better way to compare buddies?
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owner = self._pservice.get_owner()
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if buddy.get_name() == owner.get_name():
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return
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chunk = self._get_first_richtext_chunk(msg)
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if chunk:
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self._insert_rich_message(buddy, chunk)
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return
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chunk = self._get_first_sketch_chunk(msg)
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if chunk:
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self._insert_sketch(buddy, chunk)
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return
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def set_stream_writer(self, stream_writer):
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self._stream_writer = stream_writer
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def send_sketch(self, svgdata):
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if not svgdata or not len(svgdata):
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return
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if self._stream_writer:
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self._stream_writer.write(self.serialize_message(svgdata))
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owner = self._pservice.get_owner()
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if owner:
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self._insert_sketch(owner, svgdata)
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def send_text_message(self, text):
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"""Send a chat message and insert it into the local buffer."""
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if len(text) <= 0:
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return
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if self._stream_writer:
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self._stream_writer.write(self.serialize_message(text))
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else:
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logging.warning("Cannot send message, there is no stream writer")
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owner = self._pservice.get_owner()
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if owner:
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self._insert_rich_message(owner, text)
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def serialize_message(self, message):
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owner = self._pservice.get_owner()
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return owner.get_name() + '||' + message
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def deserialize_message(message):
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return message.split('||', 1)
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deserialize_message = staticmethod(deserialize_message)
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