Initial import
This commit is contained in:
David Baer
225
engine/engine.py
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225
engine/engine.py
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# vim:set et sts=4 sw=4:
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#
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# ibus-grc - The Input Bus polytonic Greek input method
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#
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# Copyright (c) 2011-2014 David Baer <david.a.baer@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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# for python2
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from __future__ import print_function, unicode_literals
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import sys
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if sys.version_info.major < 3:
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chr = unichr
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elif sys.version_info.major >= 3:
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from functools import reduce
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from gi.repository import GLib
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from gi.repository import IBus
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from gi.repository import Pango
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from accents import *
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from greek_alphabet import *
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keysyms = IBus
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class EngineGRC(IBus.Engine):
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__gtype_name__ = 'EngineGRC'
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__greek_finals = {
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'b' : '\u03b2', 'B' : '\u0392',
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'g' : '\u03b3', 'G' : '\u0393',
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'd' : '\u03b4', 'D' : '\u0394',
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'z' : '\u03b6', 'Z' : '\u0396',
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'q' : '\u03b8', 'Q' : '\u0398',
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'k' : '\u03ba', 'K' : '\u039a',
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'l' : '\u03bb', 'L' : '\u039b',
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'm' : '\u03bc', 'M' : '\u039c',
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'n' : '\u03bd', 'N' : '\u039d',
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'c' : '\u03be', 'C' : '\u039e',
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'p' : '\u03c0', 'P' : '\u03a0',
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'j' : '\u03c2', 'S' : '\u03a3',
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't' : '\u03c4', 'T' : '\u03a4',
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'f' : '\u03c6', 'F' : '\u03a6',
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'x' : '\u03c7', 'X' : '\u03a7',
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'y' : '\u03c8', 'Y' : '\u03a8',
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}
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__greek_alphabet = {
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'a' : '\u03b1', 'A' : '\u0391',
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'e' : '\u03b5', 'E' : '\u0395',
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'h' : '\u03b7', 'H' : '\u0397',
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'i' : '\u03b9', 'I' : '\u0399',
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'o' : '\u03bf', 'O' : '\u039f',
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'r' : '\u03c1', 'R' : '\u03a1',
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's' : '\u03c2',
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'u' : '\u03c5', 'U' : '\u03a5',
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'w' : '\u03c9', 'W' : '\u03a9',
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}
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__greek_accents = {
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'/' : ACCENT_ACUTE,
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'\\' : ACCENT_GRAVE,
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'=' : ACCENT_CIRCUMFLEX,
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')' : BREATHING_SMOOTH,
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'(' : BREATHING_ROUGH,
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'|' : IOTA_SUBSCRIPT,
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'"' : DIALYTIKA,
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'-' : LENGTH_VRACHY,
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'_' : LENGTH_MACRON,
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}
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def __init__(self):
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super(EngineGRC, self).__init__()
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self.__is_invalidate = False
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self.__preedit_string = ""
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#self.__lookup_table = IBus.LookupTable.new(10, 0, True, True)
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self.__prop_list = IBus.PropList()
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self.__prop_list.append(IBus.Property(key="test", icon="ibus-local"))
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print("Create EngineGRC OK")
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def do_process_key_event(self, keyval, keycode, state):
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#print("process_key_event(%04x, %04x, %04x)" % (keyval, keycode, state))
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# ignore key release events
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is_press = ((state & IBus.ModifierType.RELEASE_MASK) == 0)
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if not is_press:
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return False
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if self.__preedit_string:
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if keyval == keysyms.Return:
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self.__commit_string(self.__preedit_string)
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return True
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elif keyval == keysyms.Escape:
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self.__preedit_string = ""
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self.__update()
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return True
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elif keyval == keysyms.BackSpace:
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if self.__symbol_stack:
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self.__symbol_stack = self.__symbol_stack[:-1]
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if self.__symbol_stack:
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ch = self.__symbol_stack[0]
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dia = reduce(lambda x,y:x|y, self.__symbol_stack[1:],
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0)
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self.__preedit_string = self.__preedit_string[:-1] + \
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compose_character(ch, dia)
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self.__update()
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else:
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self.__preedit_string = ""
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self.__update()
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else:
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self.__preedit_string = self.__preedit_string[:-1]
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self.__invalidate()
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return True
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elif keyval == keysyms.space:
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self.__commit_string(self.__preedit_string + ' ')
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return True
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elif keyval == keysyms.Left or keyval == keysyms.Right:
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return True
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if keyval in [ keysyms.colon, keysyms.semicolon ]:
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self.__commit_string(self.__preedit_string + '\u0387')
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return True
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elif keyval == keysyms.question:
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self.__commit_string(self.__preedit_string + '\u037e')
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return True
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if keyval in range(keysyms.a, keysyms.z + 1) or \
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keyval in range(keysyms.A, keysyms.Z + 1):
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if state & (IBus.ModifierType.CONTROL_MASK | \
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IBus.ModifierType.MOD1_MASK) == 0:
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chrval = chr(keyval)
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if chrval in self.__greek_finals:
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if self.__preedit_string == '\u03c2':
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self.__commit_string('\u03c3')
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self.__preedit_string += self.__greek_finals[chrval]
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self.__commit_string(self.__preedit_string)
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return True
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elif chrval in self.__greek_alphabet:
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if self.__preedit_string == '\u03c2':
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self.__commit_string('\u03c3')
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else:
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self.__commit_string(self.__preedit_string)
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greek_char = self.__greek_alphabet[chrval]
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self.__preedit_string += greek_char
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self.__symbol_stack.append(greek_char)
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self.__update()
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return True
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else:
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self.__preedit_string += chr(keyval)
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self.__invalidate()
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return True
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elif chr(keyval) in self.__greek_accents and \
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self.__symbol_stack:
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ch = self.__symbol_stack[0]
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if isvowel(ch) or ch in ( rho, Rho ):
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greek_accent = self.__greek_accents[chr(keyval)]
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self.__symbol_stack.append(greek_accent)
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dia = reduce(lambda x,y:x|y, self.__symbol_stack[1:], 0)
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self.__preedit_string = self.__preedit_string[:-1] + \
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compose_character(ch, dia)
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self.__invalidate()
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return True
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else:
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self.__commit_string(self.__preedit_string)
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else:
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if keyval < 128 and self.__preedit_string:
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self.__commit_string(self.__preedit_string)
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return False
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def __invalidate(self):
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if self.__is_invalidate:
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return
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self.__is_invalidate = True
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GLib.idle_add(self.__update)
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self.hide_lookup_table()
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def __commit_string(self, text):
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self.commit_text(IBus.Text.new_from_string(text))
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self.__preedit_string = ''
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self.__symbol_stack = [ ]
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self.__update()
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def __update(self):
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preedit_len = len(self.__preedit_string)
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attrs = IBus.AttrList()
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if preedit_len > 0:
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attrs.append(
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IBus.AttrUnderline.new(
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IBus.AttrUnderline.SINGLE, 0, preedit_len
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)
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)
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text = IBus.Text.new_from_string(self.__preedit_string)
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text.set_attributes(attrs)
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self.update_preedit_text(text, preedit_len, preedit_len > 0)
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self.__is_invalidate = False
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def show_lookup_table(self):
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return True
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def do_focus_in(self):
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#print("focus_in")
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self.register_properties(self.__prop_list)
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def do_focus_out(self):
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#print("focus_out")
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pass
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def do_reset(self):
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#print("reset")
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pass
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def do_property_activate(self, prop_name):
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#print("PropertyActivate(%s)" % prop_name)
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pass
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