git.maemo.org Git - qquiz/blob - src/quiz.cpp

   1 /*
   2  *  Copyright (C) 2010 Charles Clement <caratorn _at_ gmail.com>
   3  *
   4  *  This file is part of qquiz.
   5  *
   6  *  qquiz is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19  *  02110-1301  USA
  20  *
  21  */
  22
  23 #include "quiz.h"
  24
  25 question::question(QString h, QString r) : hint(h), answer(r), answered(0) {
  26 }
  27
  28 question::~question() {
  29         delete(label);
  30 }
  31
  32 quiz::quiz() : current(NULL), correct(0) {
  33         QAction *choose;
  34
  35         window = new QWidget();
  36         window->setWindowTitle(QApplication::translate("Qtquiz", "Qtquiz"));
  37
  38         menu = new QMenuBar(window);
  39         choose = new QAction("Open", window);
  40         QObject::connect(choose, SIGNAL(triggered()), this, SLOT(choose_quiz()));
  41
  42         menu->addAction(choose);
  43         window->show();
  44
  45         retrieve_quizzes();
  46
  47         choose_quiz();
  48 };
  49
  50 void quiz::retrieve_quizzes() {
  51         QDir dir;
  52         QFileInfoList list;
  53         quiz_file *q;
  54         QString path("");
  55         QString buf;
  56         QString datadir(PKGDATADIR);
  57
  58         if(dir.cd(datadir)) {
  59                 list = dir.entryInfoList(QDir::Files);
  60         } else {
  61                 cerr << "Can't find directory " << datadir.toStdString() << endl;
  62         }
  63         path.append(dir.homePath());
  64         path.append("/.");
  65         path.append(APP_NAME);
  66         if (dir.cd(path)) {
  67                 list.append(dir.entryInfoList(QDir::Files));
  68         } else {
  69                 cerr << "Can't find directory " << path.toStdString() << endl;
  70         }
  71         for (int i = 0; i < list.size(); ++i) {
  72                 q = new quiz_file();
  73
  74                 QFileInfo fileInfo = list.at(i);
  75                 q->path = fileInfo.absoluteFilePath();
  76                 QFile file(fileInfo.absoluteFilePath());
  77                 file.open(QFile::ReadOnly);
  78                 QTextStream stream(&file);
  79                 do {
  80                         buf = stream.readLine();
  81                 } while (buf[0] == '#');
  82                 q->title = buf;
  83                 q->id = i;
  84                 files.push_back(q);
  85         }
  86 }
  87
  88 void quiz::choose_quiz() {
  89     QStringList items;
  90         vector<quiz_file *>::iterator itr;
  91     bool ok;
  92
  93         for (itr = files.begin(); itr != files.end() ; itr++) {
  94                 items << (*itr)->title;
  95         }
  96
  97     //QString item = QInputDialog::getItem(window, tr("Choose quiz"),
  98         //                                        tr("Available quizzes:"), items, 0, false, &ok, QInputDialog::UseListViewForComboBoxItems);
  99     QString item = QInputDialog::getItem(window, tr("Choose quiz"),
 100                                                   tr("Available quizzes:"), items, 0, false, &ok);
 101
 102     if (ok && !item.isEmpty()) {
 103                 if (current) {
 104                         vector<question *>::iterator itrq;
 105
 106                         index.clear();
 107                         for ( itrq = questions.begin() ; itrq != questions.end() ; itrq++) {
 108                                 (*itrq)->label->hide();
 109                                 grid->removeWidget((*itrq)->label);
 110                         }
 111                         delete(timer);
 112                         questions.clear();
 113                         correct = 0;
 114                 } else {
 115                         init_gui();
 116                 }
 117                 current = files.at(items.indexOf(item));
 118                 if(read_quiz(current->path.absolutePath().toStdString().c_str())) {
 119                         menu->addAction(give_up);
 120                         display_score();
 121                         display_grid();
 122                         if (total_time) {
 123                                 current_time = total_time;
 124                                 timer = new QTimer(this);
 125                                 connect(timer, SIGNAL(timeout()), this, SLOT(update_timer()));
 126                                 timer->start(1000);
 127                         }
 128                 }
 129         }
 130 }
 131
 132
 133 int quiz::read_quiz(const char *filename) {
 134         string parse_line, hint, answer;
 135         string buffer;
 136         string::size_type loc, mloc;
 137         QString qanswer;
 138         question *q;
 139         ifstream ifs (filename);
 140         max_label_length = 0;
 141         int i = 0;
 142
 143         total_time = 0;
 144         if (!ifs) {
 145                 cerr << "Failed to open file " << filename << endl;
 146                 return 0;
 147         } else {
 148                 do {
 149                         getline(ifs, buffer);
 150                 } while (buffer[0] == '#');
 151                 title = QString::fromStdString(buffer);
 152                 do {
 153                         getline(ifs, buffer);
 154                 } while (buffer[0] == '#');
 155                 total_time = atoi(buffer.c_str());
 156                 /* convert minutes to seconds */
 157                 total_time *= 60;
 158                 while (getline(ifs, parse_line)){
 159                         if (parse_line[0] == '#')
 160                                 continue;
 161
 162                         loc = parse_line.find(CHAR_DELIM);
 163                         if (loc == string::npos) {
 164                                 cerr << "Wrong format in file " << filename << endl;
 165                                 return 0 ;
 166                         }
 167
 168                         hint = parse_line.substr(0, loc);
 169                         if (hint.length() > max_label_length)
 170                                 max_label_length = hint.length();
 171                         parse_line = parse_line.substr(loc);
 172                         mloc = parse_line.find(ANSWER_DELIM);
 173
 174                         if (mloc == string::npos) {
 175                                 answer = parse_line.substr(1);
 176                         } else {
 177                                 answer = parse_line.substr(1, mloc - 1);
 178                         }
 179                         if (answer.length() > max_label_length )
 180                                 max_label_length = answer.length();
 181                         qanswer = QString::fromStdString(answer);
 182                         qanswer = qanswer.trimmed();
 183                         q = new question(QString::fromStdString(hint), qanswer );
 184                         questions.push_back(q);
 185                         index[qanswer.toLower()] = i;
 186
 187                         while (mloc != string::npos) {
 188                                 parse_line = parse_line.substr(mloc + 1);
 189                                 mloc = parse_line.find(ANSWER_DELIM);
 190                                 if (mloc != string::npos) {
 191                                         answer = parse_line.substr(0, mloc);
 192                                 } else {
 193                                         answer = parse_line.substr(0);
 194                                 }
 195                                 qanswer = QString::fromStdString(answer);
 196                                 qanswer = qanswer.trimmed();
 197                                 index[qanswer.toLower()] = i;
 198                                 mloc = parse_line.find(ANSWER_DELIM);
 199                         }
 200                         i++;
 201                 }
 202                 ifs.close();
 203                 total = i;
 204         }
 205         return 1;
 206 }
 207
 208 void quiz::init_gui() {
 209         QHBoxLayout *menu_layout;
 210
 211         line = new QLineEdit(window);
 212         score = new QLabel("", window);
 213         timer_label = new QLabel("0:00", window);
 214
 215         /* Disable auto-completion
 216          */
 217         //line->setCompleter((QCompleter *)0);
 218         //line->setCompleter(0);
 219
 220 #if QT_VERSION >= QT_VERSION_CHECK(4, 6, 0)
 221         // supposed to work in Qt 4.6
 222         line->setInputMethodHints(Qt::ImhNoPredictiveText);
 223 #endif
 224
 225         //line->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
 226         line->setMinimumWidth(window->width() / 2);
 227         score->setAlignment(Qt::AlignHCenter);
 228         timer_label->setAlignment(Qt::AlignHCenter);
 229
 230         layout = new QVBoxLayout();
 231         menu_layout = new QHBoxLayout();
 232
 233         score->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 234         line->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 235         timer_label->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
 236
 237         menu_layout->addWidget(score);
 238         menu_layout->addWidget(line);
 239         menu_layout->addWidget(timer_label);
 240
 241         menu_layout->setSizeConstraint(QLayout::SetFixedSize);
 242         layout->addLayout(menu_layout);
 243
 244         scrollArea = new QScrollArea();
 245         sub_window = new QWidget(scrollArea);
 246         grid = new QGridLayout();
 247
 248         sub_window->setLayout(grid);
 249         scrollArea->setWidget(sub_window);
 250
 251         scrollArea->setWidgetResizable(true);
 252         scrollArea->setProperty("FingerScrollable", true);
 253         scrollArea->setFocusPolicy(Qt::NoFocus);
 254
 255         layout->addWidget(scrollArea);
 256         window->setLayout(layout);
 257
 258         QObject::connect(line, SIGNAL(textChanged(const QString&)), this, SLOT(buzz(const QString&)));
 259
 260         give_up = new QAction("Give up", window);
 261         QObject::connect(give_up, SIGNAL(triggered()), this, SLOT(end()));
 262 }
 263
 264 void quiz::buzz(const QString& buffer) {
 265         map <QString, int>::iterator itr;
 266         question *q;
 267
 268         itr = index.find(buffer.toLower());
 269         if (itr != index.end()) {
 270                 q = questions.at(itr->second);
 271
 272                 if (q->answered) {
 273                         return ;
 274                 } else {
 275                         q->label->setStyleSheet("QLabel { color: green }");
 276                         q->label->setText(q->answer);
 277                         correct++;
 278                         line->clear();
 279                         display_score();
 280                         q->answered = 1;
 281                         if (correct == total) {
 282                                 end();
 283                         }
 284                 }
 285         }
 286 }
 287
 288 quiz::~quiz() {
 289         index.clear();
 290         questions.clear();
 291 }
 292
 293 void quiz::display_score() {
 294         QString score_text, ext;
 295
 296         score_text.setNum(correct);
 297         score_text.append('/');
 298         ext.setNum(total);
 299         score_text.append(ext);
 300
 301         score->setText(score_text);
 302 }
 303
 304 void quiz::display_grid() {
 305         vector<question *>::iterator itrq;
 306         int i,j, nr_columns, nr_col_padding;
 307         int padding = 3;
 308         int pixelsWide ;
 309         QFont font;
 310         string example;
 311
 312         QFontMetrics qfm = QFontMetrics(font);
 313         example.append(max_label_length + 2, 'C');
 314         pixelsWide = qfm.width(QString::fromStdString(example));
 315
 316         if (pixelsWide) {
 317                 nr_columns = window->width() / pixelsWide;
 318                 nr_col_padding = (window->width() -
 319                                 (2 * padding + nr_columns * 2 * padding) ) / pixelsWide;
 320                 nr_columns = nr_col_padding;
 321         }
 322         if (!nr_columns) {
 323                 nr_columns = DEFAULT_NR_COL;
 324         }
 325
 326         itrq = questions.begin();
 327         for ( i = 0; itrq != questions.end() ; i++) {
 328
 329                 for ( j = 0 ; j < nr_columns && itrq != questions.end() ; j++) {
 330                         (*itrq)->label = new QLabel((*itrq)->hint);
 331                         // Doesn't do anything on maemo
 332                         //(*itrq)->label->setFrameStyle(QFrame::Panel | QFrame::Raised);
 333
 334                         grid->addWidget((*itrq)->label, i, j);
 335                         itrq++;
 336                 }
 337         }
 338
 339 }
 340
 341 void quiz::update_timer() {
 342
 343         current_time--;
 344         QTime t(0, current_time / 60, current_time % 60);
 345         timer_label->setText(t.toString("m:ss"));
 346         if (current_time == 0) {
 347                 end();
 348         }
 349 }
 350
 351 void quiz::end() {
 352         vector<question *>::iterator itrq;
 353
 354         if(!current)
 355                 return;
 356
 357         timer->stop();
 358
 359         menu->removeAction(give_up);
 360         for ( itrq = questions.begin() ; itrq != questions.end() ; itrq++) {
 361                 if (!(*itrq)->answered) {
 362                         (*itrq)->label->setStyleSheet("QLabel { color: red }");
 363                         (*itrq)->label->setText((*itrq)->answer);
 364                 }
 365         }
 366 }