kiten/kromajiedit.cpp

   1 /**
   2  This file is part of Kiten, a KDE Japanese Reference Tool...
   3  Copyright (C) 2001  Jason Katz-Brown <jason@katzbrown.com>
   4
   5  This program is free software; you can redistribute it and/or modify
   6  it under the terms of the GNU General Public License as published by
   7  the Free Software Foundation; either version 2 of the License, or
   8  (at your option) any later version.
   9
  10  This program is distributed in the hope that it will be useful,
  11  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  GNU General Public License for more details.
  14
  15  You should have received a copy of the GNU General Public License
  16  along with this program; if not, write to the Free Software
  17  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  18  USA
  19 **/
  20
  21 #include <kdebug.h>
  22 #include <kstandarddirs.h>
  23 #include <kmessagebox.h>
  24 #include <klocale.h>
  25 #include <qfile.h>
  26 #include <qpopupmenu.h>
  27 #include <qtextcodec.h>
  28
  29 #include "kromajiedit.h"
  30
  31 KRomajiEdit::KRomajiEdit(QWidget *parent, const char *name)
  32         : KLineEdit(parent, name)
  33 {
  34         kana = "unset";
  35
  36         KStandardDirs *dirs = KGlobal::dirs();
  37         QString romkana = dirs->findResource("data", "kiten/romkana.cnv");
  38         if (romkana.isNull())
  39         {
  40                 KMessageBox::error(0, i18n("Romaji information file not installed, so Romaji conversion cannot be used."));
  41                 return;
  42         }
  43
  44         QFile f(romkana);
  45
  46         if (!f.open(IO_ReadOnly))
  47         {
  48                 KMessageBox::error(0, i18n("Romaji information could not be loaded, so Romaji conversion cannot be used."));
  49         }
  50
  51         QTextStream t(&f);
  52         t.setCodec(QTextCodec::codecForName("eucJP"));
  53         while (!t.eof())
  54         {
  55                 QString s = t.readLine();
  56
  57                 QChar first = s.at(0);
  58                 if (first == '#') // comment!
  59                 {
  60                         // nothing
  61                 }
  62                 else if (first == '$') // header
  63                 {
  64                         if (kana == "unset")
  65                                 kana = "hiragana";
  66                         else
  67                                 kana = "katakana";
  68                 }
  69                 else // body
  70                 {
  71                         QStringList things(QStringList::split(QChar(' '), s));
  72                         QString thekana(things.first());
  73                         QString romaji(*things.at(1));
  74
  75                         if (kana == "hiragana")
  76                                 hiragana[romaji] = thekana;
  77                         else if (kana == "katakana")
  78                                 katakana[romaji] = thekana;
  79                 }
  80         }
  81         f.close();
  82
  83         kana = "english";
  84 }
  85
  86 KRomajiEdit::~KRomajiEdit()
  87 {
  88 }
  89
  90 void KRomajiEdit::setKana(int _kana)
  91 {
  92         switch (_kana)
  93         {
  94                 case 0:
  95                 kana = "english";
  96                 break;
  97                 case 1:
  98                 kana = "hiragana";
  99                 break;
 100                 //case 2:
 101                 //kana = "katakana";
 102                 //break;
 103         }
 104 }
 105
 106 // TODO allow editing not only at end
 107 void KRomajiEdit::keyPressEvent(QKeyEvent *e)
 108 {
 109         bool shift = e->state() & ShiftButton;
 110         QString ji = e->text();
 111
 112         if (shift && e->key() == Key_Space) // switch hiragana/english
 113         {
 114                 if (kana == "hiragana")
 115                         kana = "english";
 116                 else if (kana == "english")
 117                         kana = "hiragana";
 118
 119                 return;
 120         }
 121
 122         if (kana == "english" || ji.isEmpty())
 123         {
 124                 KLineEdit::keyPressEvent(e);
 125                 return;
 126         }
 127
 128         if (shift) // shift for katakana
 129         {
 130                 if (kana == "hiragana")
 131                         kana = "katakana";
 132         }
 133
 134         //kdDebug() << "--------------------\n";
 135
 136         QString curEng;
 137         QString curKana;
 138         QString _text = text();
 139
 140         int i;
 141         unsigned int len = _text.length();
 142         //kdDebug() << "length = " << len << endl;
 143         for (i = len - 1; i >= 0; i--)
 144         {
 145                 QChar at = _text.at(i);
 146
 147                 //kdDebug() << "at = " << QString(at) << endl;
 148
 149                 if (at.row() == 0 && at != '.')
 150                 {
 151                         //kdDebug() << "prepending " << QString(at) << endl;
 152                         curEng.prepend(at);
 153                 }
 154                 else
 155                         break;
 156         }
 157         i++;
 158
 159         //kdDebug() << "i is " << i << ", length is " << len << endl;
 160         curKana = _text.left(i);
 161
 162         ji.prepend(curEng);
 163         ji = ji.lower();
 164         //kdDebug() << "ji = " << ji << endl;
 165
 166         QString replace;
 167
 168         //kdDebug () << "kana is " << kana << endl;
 169         if (kana == "hiragana")
 170                 replace = hiragana[ji];
 171         else if (kana == "katakana")
 172                 replace = katakana[ji];
 173
 174         //kdDebug() << "replace = " << replace << endl;
 175
 176         if (!!replace) // if (replace has something in it)
 177         {
 178                 //kdDebug() << "replace isn't empty\n";
 179
 180                 setText(curKana + replace);
 181
 182                 if (kana == "katakana")
 183                         kana = "hiragana";
 184                 return;
 185         }
 186         else
 187         {
 188                 //kdDebug() << "replace is empty\n";
 189                 QString farRight(ji.right(ji.length() - 1));
 190                 //kdDebug() << "ji = " << ji << endl;
 191                 //kdDebug() << "farRight = " << farRight << endl;
 192
 193                 // test if we need small tsu
 194                 if (ji.at(0) == farRight.at(0)) // if two letters are same, and we can add a twoletter length kana
 195                 {
 196                         if (kana == "hiragana")
 197                                 setText(curKana + hiragana[ji.at(0) == 'n'? "n'" : "t-"] + farRight.at(0));
 198                         else
 199                                 setText(curKana + katakana[ji.at(0) == 'n'? "n'" : "t-"] + farRight.at(0));
 200
 201                         if (kana == "katakana")
 202                                 kana = "hiragana";
 203                         return;
 204                 }
 205
 206                 // test for hanging n
 207                 QString newkana;
 208                 if (kana == "hiragana")
 209                 {
 210                         newkana = hiragana[farRight];
 211                         //kdDebug() << "newkana = " << newkana << endl;
 212                         if (ji.at(0) == 'n' && !!newkana)
 213                         {
 214                                 //kdDebug() << "doing the n thing\n";
 215
 216                                 setText(curKana + hiragana["n'"] + newkana);
 217
 218                                 if (kana == "katakana")
 219                                         kana = "hiragana";
 220                                 return;
 221                         }
 222                 }
 223                 else
 224                 {
 225                         newkana = katakana[farRight];
 226                         if (ji.at(0) == 'n' && !!newkana)
 227                         {
 228                                 //kdDebug() << "doing the n thing - katakana\n";
 229
 230                                 setText(curKana + katakana["n'"] + newkana);
 231
 232                                 if (kana == "katakana")
 233                                         kana = "hiragana";
 234                                 return;
 235                         }
 236                 }
 237         }
 238
 239         if ( e->key() == Key_Return || e->key() == Key_Enter ) // take care of pending n
 240         {
 241                 if (kana == "hiragana")
 242                 {
 243                         if (_text[len-1] == 'n')
 244                                 setText(curKana + hiragana["n'"]);
 245                 }
 246                 else
 247                 {
 248                         if (_text[len-1] == 'N')
 249                                 setText(curKana + katakana["n'"]);
 250                 }
 251         }
 252
 253         KLineEdit::keyPressEvent(e); // don't think we'll get here :)
 254 }
 255
 256 QPopupMenu *KRomajiEdit::createPopupMenu()
 257 {
 258     QPopupMenu *popup = KLineEdit::createPopupMenu();
 259     popup->insertSeparator();
 260     popup->insertItem(i18n("English"), 0);
 261     popup->insertItem(i18n("Kana"), 1);
 262
 263     if (kana == "english")
 264                 popup->setItemChecked(0, true);
 265     else if (kana == "hiragana")
 266                 popup->setItemChecked(1, true);
 267
 268     connect(popup, SIGNAL(activated(int)), SLOT(setKana(int)));
 269
 270     emit aboutToShowContextMenu(popup);
 271     return popup;
 272 }
 273
 274 #include "kromajiedit.moc"