#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2008 Zsolt Foldvari
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Id$
"Text editor subclassed from gtk.TextView handling L{StyledText}."
__all__ = ["StyledTextEditor"]
#-------------------------------------------------------------------------
#
# Python modules
#
#-------------------------------------------------------------------------
from gettext import gettext as _
import logging
_LOG = logging.getLogger(".widgets.styledtexteditor")
#-------------------------------------------------------------------------
#
# GTK libraries
#
#-------------------------------------------------------------------------
import gobject
import gtk
from pango import UNDERLINE_SINGLE
#-------------------------------------------------------------------------
#
# GRAMPS modules
#
#-------------------------------------------------------------------------
from gen.lib import StyledTextTagType
from widgets.styledtextbuffer import (StyledTextBuffer, ALLOWED_STYLES,
MATCH_START, MATCH_END,
MATCH_FLAVOR, MATCH_STRING)
from widgets.valueaction import ValueAction
from widgets.toolcomboentry import ToolComboEntry
from widgets.springseparator import SpringSeparatorAction
from Spell import Spell
from GrampsDisplay import url as display_url
#-------------------------------------------------------------------------
#
# Constants
#
#-------------------------------------------------------------------------
HAND_CURSOR = gtk.gdk.Cursor(gtk.gdk.HAND2)
REGULAR_CURSOR = gtk.gdk.Cursor(gtk.gdk.XTERM)
FORMAT_TOOLBAR = '''
''' % (StyledTextTagType.ITALIC,
StyledTextTagType.BOLD,
StyledTextTagType.UNDERLINE,
StyledTextTagType.FONTFACE,
StyledTextTagType.FONTSIZE,
StyledTextTagType.FONTCOLOR,
StyledTextTagType.HIGHLIGHT,
)
FONT_SIZES = [8, 9, 10, 11, 12, 13, 14, 16, 18, 20, 22,
24, 26, 28, 32, 36, 40, 48, 56, 64, 72]
USERCHARS = "-A-Za-z0-9"
PASSCHARS = "-A-Za-z0-9,?;.:/!%$^*&~\"#'"
HOSTCHARS = "-A-Za-z0-9"
PATHCHARS = "-A-Za-z0-9_$.+!*(),;:@&=?/~#%"
#SCHEME = "(news:|telnet:|nntp:|file:/|https?:|ftps?:|webcal:)"
SCHEME = "(file:/|https?:|ftps?:|webcal:)"
USER = "[" + USERCHARS + "]+(:[" + PASSCHARS + "]+)?"
URLPATH = "/[" + PATHCHARS + "]*[^]'.}>) \t\r\n,\\\"]"
(GENURL, HTTP, MAIL) = range(3)
#-------------------------------------------------------------------------
#
# StyledTextEditor
#
#-------------------------------------------------------------------------
class StyledTextEditor(gtk.TextView):
"""StyledTextEditor is an enhanced gtk.TextView to edit L{StyledText}.
StyledTextEditor is a gui object for L{StyledTextBuffer}. It offers
L{set_text} and L{get_text} convenience methods to set and get the
buffer's text.
StyledTextEditor provides a formatting toolbar, which can be retrieved
by the L{get_toolbar} method.
StyledTextEdit defines a new signal: 'match-changed', which is raised
whenever the mouse cursor reaches or leaves a matched string in the text.
The feature uses the regexp pattern mathing mechanism of
L{StyledTextBuffer}.
The signal's default handler highlights the URL strings. URL's can be
followed from the editor's popup menu or by pressing the Left
mouse button.
@ivar last_match: previously matched string, used for generating the
'match-changed' signal.
@type last_match: tuple or None
@ivar match: currently matched string, used for generating the
'match-changed' signal.
@type match: tuple or None
@ivar show_unicode: stores the user's gtk.settings['gtk-show-unicode-menu']
value.
@type show_unicode: bool
@ivar spellcheck: spell checker object created for the editor instance.
@type spellcheck: L{Spell}
@ivar textbuffer: text buffer assigned to the edit instance.
@type textbuffer: L{StyledTextBuffer}
@ivar toolbar: toolbar to be used for text formatting.
@type toolbar: gtk.Toolbar
@ivar url_match: stores the matched URL and other mathing parameters.
@type url_match: tuple or None
"""
__gtype_name__ = 'StyledTextEditor'
__gsignals__ = {
'match-changed': (gobject.SIGNAL_RUN_FIRST,
gobject.TYPE_NONE, #return value
(gobject.TYPE_PYOBJECT,)), # arguments
}
def __init__(self):
"""Setup initial instance variable values."""
self.textbuffer = StyledTextBuffer()
self.textbuffer.connect('style-changed', self._on_buffer_style_changed)
gtk.TextView.__init__(self, self.textbuffer)
self.match = None
self.last_match = None
self._init_url_match()
self.url_match = None
self.toolbar = self._create_toolbar()
self.spellcheck = Spell(self)
self._internal_style_change = False
self._connect_signals()
# we want to disable the unicode menu in the popup
settings = gtk.settings_get_default()
self.show_unicode = settings.get_property('gtk-show-unicode-menu')
settings.set_property('gtk-show-unicode-menu', False)
# virtual methods
def do_match_changed(self, match):
"""Default signal handler.
URL highlighting.
@param match: the new match parameters
@type match: tuple or None
@attention: Do not override the handler, but connect to the signal.
"""
window = self.get_window(gtk.TEXT_WINDOW_TEXT)
start, end = self.textbuffer.get_bounds()
self.textbuffer.remove_tag_by_name('hyperlink', start, end)
if match and (match[MATCH_FLAVOR] in (GENURL, HTTP, MAIL)):
start_offset = match[MATCH_START]
end_offset = match[MATCH_END]
start = self.textbuffer.get_iter_at_offset(start_offset)
end = self.textbuffer.get_iter_at_offset(end_offset)
self.textbuffer.apply_tag_by_name('hyperlink', start, end)
window.set_cursor(HAND_CURSOR)
self.url_match = match
else:
window.set_cursor(REGULAR_CURSOR)
self.url_match = None
def on_unrealize(self, widget):
"""Signal handler.
Set the default Gtk settings back before leaving.
"""
settings = gtk.settings_get_default()
settings.set_property('gtk-show-unicode-menu', self.show_unicode)
def on_key_press_event(self, widget, event):
"""Signal handler.
Handle formatting shortcuts.
"""
for accel in self.action_accels.keys():
key, mod = gtk.accelerator_parse(accel)
if (event.keyval, event.state) == (key, mod):
action_name = self.action_accels[accel]
action = self.action_group.get_action(action_name)
action.activate()
return True
return False
def on_insert_at_cursor(self, widget, string):
"""Signal handler. for debugging only."""
_LOG.debug("Textview insert '%s'" % string)
def on_delete_from_cursor(self, widget, mode, count):
"""Signal handler. for debugging only."""
_LOG.debug("Textview delete type %d count %d" % (mode, count))
def on_paste_clipboard(self, widget):
"""Signal handler. for debugging only."""
_LOG.debug("Textview paste clipboard")
def on_motion_notify_event(self, widget, event):
"""Signal handler.
As the mouse cursor moves the handler checks if there's a new
regexp match at the new location. If match changes the
'match-changed' signal is raised.
"""
x, y = self.window_to_buffer_coords(gtk.TEXT_WINDOW_WIDGET,
int(event.x), int(event.y))
iter_at_location = self.get_iter_at_location(x, y)
self.match = self.textbuffer.match_check(iter_at_location.get_offset())
if self.match != self.last_match:
self.emit('match-changed', self.match)
self.last_match = self.match
self.window.get_pointer()
return False
def on_button_press_event(self, widget, event):
"""Signal handler.
Handles the + Left click over a URL match.
"""
if ((event.type == gtk.gdk.BUTTON_PRESS) and
(event.button == 1) and
(event.state and gtk.gdk.CONTROL_MASK) and
(self.url_match)):
flavor = self.url_match[MATCH_FLAVOR]
url = self.url_match[MATCH_STRING]
self._open_url_cb(None, url, flavor)
return False
def on_populate_popup(self, widget, menu):
"""Signal handler.
Insert extra menuitems:
1. Insert language selector submenu for spell checking.
2. Insert extra menus depending on ULR match result.
"""
# spell checker submenu
spell_menu = gtk.MenuItem(_('Spell'))
spell_menu.set_submenu(self._create_spell_menu())
spell_menu.show_all()
menu.prepend(spell_menu)
# url menu items
if self.url_match:
flavor = self.url_match[MATCH_FLAVOR]
url = self.url_match[MATCH_STRING]
if flavor == MAIL:
open_menu = gtk.MenuItem(_('_Send Mail To...'))
copy_menu = gtk.MenuItem(_('Copy _E-mail Address'))
else:
open_menu = gtk.MenuItem(_('_Open Link'))
copy_menu = gtk.MenuItem(_('Copy _Link Address'))
copy_menu.connect('activate', self._copy_url_cb, url, flavor)
copy_menu.show()
menu.prepend(copy_menu)
open_menu.connect('activate', self._open_url_cb, url, flavor)
open_menu.show()
menu.prepend(open_menu)
# private methods
def _connect_signals(self):
"""Connect to several signals of the super class gtk.TextView."""
self.connect('key-press-event', self.on_key_press_event)
self.connect('insert-at-cursor', self.on_insert_at_cursor)
self.connect('delete-from-cursor', self.on_delete_from_cursor)
self.connect('paste-clipboard', self.on_paste_clipboard)
self.connect('motion-notify-event', self.on_motion_notify_event)
self.connect('button-press-event', self.on_button_press_event)
self.connect('populate-popup', self.on_populate_popup)
self.connect('unrealize', self.on_unrealize)
def _create_toolbar(self):
"""Create a formatting toolbar.
@returns: toolbar containing text formatting toolitems.
@returntype: gtk.Toolbar
"""
# define the actions...
# ...first the toggle actions, which have a ToggleToolButton as proxy
format_toggle_actions = [
(str(StyledTextTagType.ITALIC), gtk.STOCK_ITALIC, None, None,
_('Italic'), self._on_toggle_action_activate),
(str(StyledTextTagType.BOLD), gtk.STOCK_BOLD, None, None,
_('Bold'), self._on_toggle_action_activate),
(str(StyledTextTagType.UNDERLINE), gtk.STOCK_UNDERLINE, None, None,
_('Underline'), self._on_toggle_action_activate),
]
self.toggle_actions = [action[0] for action in format_toggle_actions]
# ...then the normal actions, which have a ToolButton as proxy
format_actions = [
(str(StyledTextTagType.FONTCOLOR), 'gramps-font-color', None, None,
_('Font Color'), self._on_action_activate),
(str(StyledTextTagType.HIGHLIGHT), 'gramps-font-bgcolor', None, None,
_('Background Color'), self._on_action_activate),
('clear', gtk.STOCK_CLEAR, None, None,
_('Clear Markup'), self._format_clear_cb),
]
# ...last the custom actions, which have custom proxies
items = [f.get_name() for f in self.get_pango_context().list_families()]
items.sort()
default = StyledTextTagType.STYLE_DEFAULT[StyledTextTagType.FONTFACE]
fontface_action = ValueAction(str(StyledTextTagType.FONTFACE),
_("Font family"),
default,
ToolComboEntry,
items,
False, #editable
True, #shortlist
None) # validator
fontface_action.connect('changed', self._on_comboaction_changed)
items = FONT_SIZES
default = StyledTextTagType.STYLE_DEFAULT[StyledTextTagType.FONTSIZE]
fontsize_action = ValueAction(str(StyledTextTagType.FONTSIZE),
_("Font size"),
default,
ToolComboEntry,
items,
True, #editable
False, #shortlist
is_valid_fontsize) #validator
fontsize_action.connect('changed', self._on_comboaction_changed)
spring = SpringSeparatorAction("spring", "", "", None)
# action accelerators
self.action_accels = {
'i': str(StyledTextTagType.ITALIC),
'b': str(StyledTextTagType.BOLD),
'u': str(StyledTextTagType.UNDERLINE),
}
# create the action group and insert all the actions
self.action_group = gtk.ActionGroup('Format')
self.action_group.add_toggle_actions(format_toggle_actions)
self.action_group.add_actions(format_actions)
self.action_group.add_action(fontface_action)
self.action_group.add_action(fontsize_action)
self.action_group.add_action(spring)
# define the toolbar and create the proxies via ensure_update()
uimanager = gtk.UIManager()
uimanager.insert_action_group(self.action_group, 0)
uimanager.add_ui_from_string(FORMAT_TOOLBAR)
uimanager.ensure_update()
# get the toolbar and set it's style
toolbar = uimanager.get_widget('/ToolBar')
toolbar.set_style(gtk.TOOLBAR_ICONS)
return toolbar
def _init_url_match(self):
"""Setup regexp matching for URL match."""
self.textbuffer.create_tag('hyperlink',
underline=UNDERLINE_SINGLE,
foreground='blue')
self.textbuffer.match_add("(www|ftp)[" + HOSTCHARS + "]*\\.[" +
HOSTCHARS + ".]+" + "(:[0-9]+)?(" +
URLPATH + ")?/?", HTTP)
self.textbuffer.match_add("(mailto:)?[a-z0-9][a-z0-9.-]*@[a-z0-9]"
"[a-z0-9-]*(\\.[a-z0-9][a-z0-9-]*)+", MAIL)
self.textbuffer.match_add(SCHEME + "//(" + USER + "@)?[" +
HOSTCHARS + ".]+" + "(:[0-9]+)?(" +
URLPATH + ")?/?", GENURL)
def _create_spell_menu(self):
"""Create a menu with all the installed languages.
It is called each time the popup menu is opened. Each language
forms a radio menu item, and the selected language is set as active.
@returns: menu containing all the installed languages.
@returntype: gtk.Menu
"""
active_language = self.spellcheck.get_active_language()
menu = gtk.Menu()
group = None
for lang in self.spellcheck.get_all_languages():
menuitem = gtk.RadioMenuItem(group, lang)
menuitem.set_active(lang == active_language)
menuitem.connect('activate', self._spell_change_cb, lang)
menu.append(menuitem)
if group is None:
group = menuitem
return menu
# Callback functions
def _on_toggle_action_activate(self, action):
"""Toggle a style.
Toggle styles are e.g. 'bold', 'italic', 'underline'.
"""
if self._internal_style_change:
return
style = int(action.get_name())
value = action.get_active()
_LOG.debug("applying style '%d' with value '%s'" % (style, str(value)))
self.textbuffer.apply_style(style, value)
def _on_action_activate(self, action):
"""Apply a format set from a gtk.Action type of action."""
style = int(action.get_name())
current_value = self.textbuffer.get_style_at_cursor(style)
if style == StyledTextTagType.FONTCOLOR:
color_selection = gtk.ColorSelectionDialog(_("Select font color"))
elif style == StyledTextTagType.HIGHLIGHT:
color_selection = gtk.ColorSelectionDialog(_("Select "
"background color"))
else:
_LOG.debug("unknown style: '%d'" % style)
return
if current_value:
color_selection.colorsel.set_current_color(
hex_to_color(current_value))
response = color_selection.run()
color = color_selection.colorsel.get_current_color()
value = color_to_hex(color)
color_selection.destroy()
if response == gtk.RESPONSE_OK:
_LOG.debug("applying style '%d' with value '%s'" %
(style, str(value)))
self.textbuffer.apply_style(style, value)
def _on_comboaction_changed(self, action):
"""Apply a format set by a ComboToolAction type of action."""
if self._internal_style_change:
return
style = int(action.get_name())
value = action.get_value()
try:
value = StyledTextTagType.STYLE_TYPE[style](value)
_LOG.debug("applying style '%d' with value '%s'" %
(style, str(value)))
self.textbuffer.apply_style(style, value)
except ValueError:
_LOG.debug("unable to convert '%s' to '%s'" %
(text, StyledTextTagType.STYLE_TYPE[style]))
def _format_clear_cb(self, action):
"""Remove all formats from the selection.
Remove only our own tags without touching other ones (e.g. gtk.Spell),
thus remove_all_tags() can not be used.
"""
for style in ALLOWED_STYLES:
self.textbuffer.remove_style(style)
def _on_buffer_style_changed(self, buffer, changed_styles):
"""Synchronize actions as the format changes at the buffer's cursor."""
for style in changed_styles.keys():
if str(style) in self.toggle_actions:
action = self.action_group.get_action(str(style))
self._internal_style_change = True
action.set_active(changed_styles[style])
self._internal_style_change = False
if ((style == StyledTextTagType.FONTFACE) or
(style == StyledTextTagType.FONTSIZE)):
action = self.action_group.get_action(str(style))
self._internal_style_change = True
action.set_value(changed_styles[style])
self._internal_style_change = False
def _spell_change_cb(self, menuitem, language):
"""Set spell checker language according to user selection."""
self.spellcheck.set_active_language(language)
def _open_url_cb(self, menuitem, url, flavor):
"""Open the URL in a browser."""
if not url:
return
if flavor == HTTP:
url = 'http:' + url
elif flavor == MAIL:
if not url.startswith('mailto:'):
url = 'mailto:' + url
elif flavor == GENURL:
pass
else:
return
display_url(url)
def _copy_url_cb(self, menuitem, url, flavor):
"""Copy url to both useful selections."""
clipboard = gtk.Clipboard(selection="CLIPBOARD")
clipboard.set_text(url)
clipboard = gtk.Clipboard(selection="PRIMARY")
clipboard.set_text(url)
# public methods
def set_text(self, text):
"""Set the text of the text buffer of the editor.
@param text: formatted text to edit in the view.
@type text: L{StyledText}
"""
self.textbuffer.set_text(text)
self.textbuffer.place_cursor(self.textbuffer.get_start_iter())
def get_text(self):
"""Get the text of the text buffer of the editor.
@returns: the formatted text from the editor.
@returntype: L{StyledText}
"""
return self.textbuffer.get_text()
def get_toolbar(self):
"""Get the formatting toolbar of the editor.
@returns: toolbar widget to use as formatting GUI.
@returntype: gtk.Toolbar
"""
return self.toolbar
#-------------------------------------------------------------------------
#
# Module functions
#
#-------------------------------------------------------------------------
def color_to_hex(color):
"""Convert gtk.gdk.Color to hex string."""
hexstring = ""
for col in 'red', 'green', 'blue':
hexfrag = hex(getattr(color, col) / (16 * 16)).split("x")[1]
if len(hexfrag) < 2:
hexfrag = "0" + hexfrag
hexstring += hexfrag
return '#' + hexstring
def hex_to_color(hex):
"""Convert hex string to gtk.gdk.Color."""
color = gtk.gdk.color_parse(hex)
return color
def is_valid_fontsize(size):
"""Validator function for font size selector widget."""
return (size > 0) and (size < 73)