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# -*- coding: utf-8 -*-
# synctex.py - Synctex support with Gedit and Evince.
#
# Copyright (C) 2010 - José Aliste <jose.aliste@gmail.com>
#
# 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 Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
from gi.repository import GObject, Pango, Gtk, Gedit, Peas, PeasGtk, Gio, Gdk
from evince_dbus import EvinceWindowProxy
import dbus.mainloop.glib
import logging
import gettext
import os
from gpdefs import *
try:
gettext.bindtextdomain(GETTEXT_PACKAGE, GP_LOCALEDIR)
_ = lambda s: gettext.dgettext(GETTEXT_PACKAGE, s);
except:
_ = lambda s: s
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
ui_str = """<ui>
<menubar name="MenuBar">
<menu name="ToolsMenu" action="Tools">
<placeholder name="ToolsOps_2">
<separator/>
<menuitem name="Synctex" action="SynctexForwardSearch"/>
</placeholder>
</menu>
</menubar>
</ui>
"""
_logger = logging.getLogger("SynctexPlugin")
def apply_style (style, tag):
def apply_style_prop(tag, style, prop):
if style.get_property(prop + "-set"):
tag.set_property(prop, style.get_property(prop))
else:
tag.set_property(prop, None)
def apply_style_prop_bool(tag, style, prop, whentrue, whenfalse):
if style.get_property(prop + "-set"):
prop_value = whentrue if style.get_property(prop) else whenfalse
tag.set_property(prop, prop_value)
apply_style_prop(tag, style, "foreground")
apply_style_prop(tag, style, "background")
apply_style_prop_bool(tag, style, "bold", Pango.Weight.BOLD, Pango.Weight.NORMAL)
apply_style_prop_bool(tag, style, "italic", Pango.Style.ITALIC, Pango.Style.NORMAL)
apply_style_prop_bool(tag, style, "underline", Pango.Underline.SINGLE,
Pango.Underline.NONE)
apply_style_prop(tag, style, "strikethrough")
def parse_modeline(line):
index = line.find("mainfile:")
if line.startswith("%") and index > 0:
# Parse the modeline.
return line[index + len("mainfile:"):].strip()
return None
class SynctexViewHelper:
def __init__(self, view, window, plugin):
self._view = view
self._window = window
self._plugin = plugin
self._doc = view.get_buffer()
self.window_proxy = None
self._handlers = [
self._doc.connect('saved', self.on_saved_or_loaded),
self._doc.connect('loaded', self.on_saved_or_loaded)
]
self._highlight_tag = self._doc.create_tag()
self.active = False
self.last_iters = None
self.gfile = None
self.update_location()
def on_notify_style_scheme(self, doc, param_object):
apply_style (doc.get_style_scheme().get_style('search-match'), self._highlight_tag)
def on_button_release(self, view, event):
modifier_mask = Gtk.accelerator_get_default_mod_mask()
event_state = event.state & modifier_mask
if event.button == 1 and event_state == Gdk.ModifierType.CONTROL_MASK:
self.sync_view(event.time)
def on_saved_or_loaded(self, doc, data):
self.update_location()
def get_output_file(self):
file_output = None
line_count = self._doc.get_line_count()
for i in range(min(3,line_count)) + range(max(0,line_count - 3), line_count):
start = self._doc.get_iter_at_line(i)
end = start.copy()
end.forward_to_line_end()
file_output = parse_modeline(self._doc.get_text(start, end, False))
if file_output is not None:
break
return file_output
def on_key_press(self, a, b):
self._unhighlight()
def on_cursor_moved(self, cur):
self._unhighlight()
def deactivate(self):
self._unhighlight()
for h in self._handlers:
self._doc.disconnect(h)
del self._highlight_tag
def update_location(self):
gfile = self._doc.get_location()
if gfile is None:
return
if self.gfile is None or gfile.get_uri() != self.gfile.get_uri():
SynctexWindowActivatable.view_dict[gfile.get_uri()] = self
self.gfile = gfile
modeline_output_file = self.get_output_file()
if modeline_output_file is not None:
filename = modeline_output_file
else:
filename = self.gfile.get_basename()
out_path = self.gfile.get_parent().get_child(filename).get_path()
out_path = os.path.splitext(out_path)
out_gfile = Gio.file_new_for_path(out_path[0] + ".pdf")
if out_gfile.query_exists(None):
self.out_gfile = out_gfile
else:
self.out_gfile = None
self.update_active()
def _highlight(self):
iter = self._doc.get_iter_at_mark(self._doc.get_insert())
end_iter = iter.copy()
end_iter.forward_to_line_end()
self._doc.apply_tag(self._highlight_tag, iter, end_iter)
self.last_iters = [iter, end_iter];
def _unhighlight(self):
if self.last_iters is not None:
self._doc.remove_tag(self._highlight_tag,
self.last_iters[0], self.last_iters[1])
self.last_iters = None
def goto_line (self, line, time):
self._doc.goto_line(line)
self._view.scroll_to_cursor()
self._window.set_active_tab(Gedit.Tab.get_from_document(self._doc))
self._highlight()
self._window.present_with_time (time)
def goto_line_after_load(self, a, line, time):
GObject.idle_add (lambda : self.goto_line(line, time))
self._doc.disconnect(self._goto_handler)
def sync_view(self, time):
if self.active:
cursor_iter = self._doc.get_iter_at_mark(self._doc.get_insert())
line = cursor_iter.get_line() + 1
col = cursor_iter.get_line_offset()
self.window_proxy.SyncView(self.gfile.get_path(), (line, col), time)
def update_active(self):
# Activate the plugin only if the doc is a LaTeX file.
lang = self._doc.get_language()
self.active = (lang is not None and lang.get_id() == 'latex' and
self.out_gfile is not None)
if self.active and self.window_proxy is None:
self._doc_active_handlers = [
self._doc.connect('cursor-moved', self.on_cursor_moved),
self._doc.connect('notify::style-scheme', self.on_notify_style_scheme)]
self._view_active_handlers = [
self._view.connect('key-press-event', self.on_key_press),
self._view.connect('button-release-event', self.on_button_release)]
style = self._doc.get_style_scheme().get_style('search-match')
apply_style(style, self._highlight_tag)
self._plugin._action_group.set_sensitive(True)
self.window_proxy = self._plugin.ref_evince_proxy(self.out_gfile, self._window)
elif not self.active and self.window_proxy is not None:
#destroy the evince window proxy.
for handler in self._doc_active_handlers:
self._doc.disconnect(handler)
for handler in self._view_active_handlers:
self._view.disconnect(handler)
self._plugin._action_group.set_sensitive(False)
self._plugin.unref_evince_proxy(self.out_gfile)
self.window_proxy = None
class SynctexWindowActivatable(GObject.Object, Gedit.WindowActivatable):
__gtype_name__ = "SynctexWindowActivatable"
window = GObject.property(type=Gedit.Window)
view_dict = {}
_proxy_dict = {}
def __init__(self):
GObject.Object.__init__(self)
def do_activate(self):
self._insert_menu()
for view in self.window.get_views():
self.add_helper(view, self.window)
self.handlers = [
self.window.connect("tab-added", lambda window, tab: self.add_helper(tab.get_view(), window)),
self.window.connect("tab-removed", lambda window, tab: self.remove_helper(tab.get_view())),
self.window.connect("active-tab-changed", self.on_active_tab_changed)
]
def do_deactivate(self):
for h in self.handlers:
self.window.disconnect(h)
for view in self.window.get_views():
self.remove_helper(view)
self._remove_menu()
def on_active_tab_changed(self, window, tab):
view_helper = self.get_helper(tab.get_view())
if view_helper is None:
active = False
else:
active = view_helper.active
self._action_group.set_sensitive(active)
def add_helper(self, view, window):
helper = SynctexViewHelper(view, window, self)
location = view.get_buffer().get_location()
if location is not None:
self.view_dict[location.get_uri()] = helper
view.synctex_view_helper = helper
def remove_helper(self, view):
helper = self.get_helper(view)
if helper.gfile is not None:
del self.view_dict[helper.gfile.get_uri()]
helper.deactivate()
del view.synctex_view_helper
def get_helper(self, view):
if not hasattr(view, 'synctex_view_helper'):
return None
return view.synctex_view_helper
def _remove_menu(self):
manager = self.window.get_ui_manager()
manager.remove_ui(self._ui_id)
manager.remove_action_group(self._action_group)
manager.ensure_update()
def _insert_menu(self):
# Get the GtkUIManager
manager = self.window.get_ui_manager()
# Create a new action group
self._action_group = Gtk.ActionGroup(name="SynctexWindowActivatableActions")
self._action_group.add_actions([("SynctexForwardSearch", None,
_("Forward Search"), "<Ctrl><Alt>F",
_("Forward Search"), self.forward_search_cb)])
# Insert the action group
manager.insert_action_group(self._action_group, -1)
# Merge the UI
self._ui_id = manager.add_ui_from_string(ui_str)
def forward_search_cb(self, action, what=None):
self.get_helper(self.window.get_active_view()).sync_view(Gtk.get_current_event_time())
def source_view_handler(self, out_gfile, uri_input, source_link, time):
if uri_input not in self.view_dict:
window = self._proxy_dict[out_gfile.get_uri()][2]
tab = window.create_tab_from_location(Gio.file_new_for_uri(uri_input),
None, source_link[0] - 1, 0, False, True)
helper = self.get_helper(tab.get_view())
helper._goto_handler = tab.get_document().connect_object("loaded",
SynctexViewHelper.goto_line_after_load,
helper, source_link[0] - 1, time)
else:
self.view_dict[uri_input].goto_line(source_link[0] - 1, time)
def ref_evince_proxy(self, gfile, window):
uri = gfile.get_uri()
proxy = None
if uri not in self._proxy_dict:
proxy = EvinceWindowProxy (uri, True, _logger)
self._proxy_dict[uri] = [1, proxy, window]
proxy.set_source_handler (lambda i, s, time: self.source_view_handler(gfile, i, s, time))
else:
self._proxy_dict[uri][0]+=1
proxy = self._proxy_dict[uri][1]
return proxy
def unref_evince_proxy(self, gfile):
uri = gfile.get_uri()
if uri in self._proxy_dict:
self._proxy_dict[uri][0] -= 1
if self._proxy_dict[uri][0] == 0:
del self._proxy_dict[uri]
# ex:ts=4:et:
|