vcs.maemo.org Git - dorian/blob - bookview.cpp

   1 #include <QDir>
   2 #include <QtGui>
   3 #include <QWebFrame>
   4
   5 #if defined(Q_WS_MAEMO_5)
   6 #   include <QAbstractKineticScroller>
   7 #elif defined(Q_OS_SYMBIAN)
   8 #   include "flickcharm.h"
   9 #endif
  10
  11 #include "book.h"
  12 #include "bookview.h"
  13 #include "library.h"
  14 #include "settings.h"
  15 #include "trace.h"
  16 #include "progress.h"
  17 #include "progressdialog.h"
  18 #include "platform.h"
  19
  20 BookView::BookView(QWidget *parent):
  21     QWebView(parent), contentIndex(-1), mBook(0),
  22     restorePositionAfterLoad(false), positionAfterLoad(0), loaded(false),
  23     contentsHeight(0)
  24 {
  25     TRACE;
  26     settings()->setAttribute(QWebSettings::AutoLoadImages, true);
  27     settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
  28     settings()->setAttribute(QWebSettings::JavaEnabled, false);
  29     settings()->setAttribute(QWebSettings::PluginsEnabled, false);
  30     settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
  31     settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, false);
  32     settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, false);
  33     settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled,
  34                              false);
  35     settings()->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled,
  36                              false);
  37     settings()->setAttribute(QWebSettings::LocalStorageEnabled, false);
  38     settings()->setAttribute(QWebSettings::ZoomTextOnly, true);
  39     settings()->setAttribute(QWebSettings::LocalContentCanAccessRemoteUrls,
  40                              false);
  41     settings()->setDefaultTextEncoding("utf-8");
  42     page()->setContentEditable(false);
  43
  44 #if defined(Q_WS_MAEMO_5) || defined(Q_OS_SYMBIAN)
  45     // Suppress unwanted text selections on Maemo and Symbian
  46     installEventFilter(this);
  47 #endif
  48     QWebFrame *frame = page()->mainFrame();
  49 #if defined(Q_WS_MAEMO_5) || defined(Q_OS_SYMBIAN)
  50     frame->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
  51 #endif
  52     frame->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
  53
  54     bookmarkImage = QImage(":/icons/bookmark.png");
  55
  56     connect(this, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
  57     connect(frame, SIGNAL(javaScriptWindowObjectCleared()),
  58             this, SLOT(addJavaScriptObjects()));
  59     connect(frame, SIGNAL(contentsSizeChanged(const QSize &)),
  60             this, SLOT(onContentsSizeChanged(const QSize &)));
  61     connect(Settings::instance(), SIGNAL(valueChanged(const QString &)),
  62             this, SLOT(onSettingsChanged(const QString &)));
  63     Settings *s = Settings::instance();
  64     s->setValue("zoom", s->value("zoom", 160));
  65     s->setValue("font", s->value("font", Platform::defaultFont()));
  66     s->setValue("scheme", s->value("scheme", "default"));
  67     setBook(0);
  68
  69 #if defined(Q_WS_MAEMO_5)
  70     scrollerMonitor = 0;
  71     scroller = property("kineticScroller").value<QAbstractKineticScroller *>();
  72 #elif defined(Q_OS_SYMBIAN)
  73     scrollerMonitor = 0;
  74     charm = new FlickCharm(this);
  75     charm->activateOn(this);
  76 #endif
  77 }
  78
  79 BookView::~BookView()
  80 {
  81     TRACE;
  82 }
  83
  84 void BookView::loadContent(int index)
  85 {
  86     TRACE;
  87     if (!mBook) {
  88         return;
  89     }
  90     if ((index < 0) || (index >= mBook->parts.size())) {
  91         return;
  92     }
  93
  94     QString contentFile(mBook->content[mBook->parts[index]].href);
  95     if (mBook->parts[index] == "error") {
  96         setHtml(contentFile);
  97     } else {
  98         loaded = false;
  99         emit partLoadStart(index);
 100         QUrl u = QUrl::fromLocalFile(QDir(mBook->rootPath()).
 101                                      absoluteFilePath(contentFile));
 102         qDebug() << "Loading" << u;
 103         load(u);
 104     }
 105     contentIndex = index;
 106 }
 107
 108 void BookView::setBook(Book *book)
 109 {
 110     TRACE;
 111
 112     // Save position in current book
 113     setLastBookmark();
 114
 115     // Open new book, restore last position
 116     if (book != mBook) {
 117         mBook = book;
 118         if (book) {
 119             contentIndex = -1;
 120             if (book->open()) {
 121                 restoreLastBookmark();
 122             } else {
 123                 mBook = 0;
 124                 contentIndex = 0;
 125                 setHtml(tr("Failed to open book"));
 126             }
 127         }
 128         else {
 129             contentIndex = 0;
 130             setHtml(tr("No book"));
 131         }
 132     }
 133 }
 134
 135 Book *BookView::book()
 136 {
 137     return mBook;
 138 }
 139
 140 void BookView::goPrevious()
 141 {
 142     TRACE;
 143     if (mBook && (contentIndex > 0)) {
 144         mBook->setLastBookmark(contentIndex - 1, 0);
 145         loadContent(contentIndex - 1);
 146     }
 147 }
 148
 149 void BookView::goNext()
 150 {
 151     TRACE;
 152     if (mBook && (contentIndex < (mBook->parts.size() - 1))) {
 153         mBook->setLastBookmark(contentIndex + 1, 0);
 154         loadContent(contentIndex + 1);
 155     }
 156 }
 157
 158 void BookView::setLastBookmark()
 159 {
 160     TRACE;
 161     if (mBook) {
 162         int height = contentsHeight;
 163         int pos = page()->mainFrame()->scrollPosition().y();
 164         qDebug() << QString("At %1 (%2%, height %3)").
 165                 arg(pos).arg((qreal)pos / (qreal)height * 100).arg(height);
 166         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 167     }
 168 }
 169
 170 void BookView::restoreLastBookmark()
 171 {
 172     TRACE;
 173     if (mBook) {
 174         goToBookmark(mBook->lastBookmark());
 175     }
 176 }
 177
 178 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 179 {
 180     TRACE;
 181     if (mBook) {
 182         if (bookmark.part != contentIndex) {
 183             qDebug () << "Loading new part" << bookmark.part;
 184             mBook->setLastBookmark(bookmark.part, bookmark.pos);
 185             restorePositionAfterLoad = true;
 186             positionAfterLoad = bookmark.pos;
 187             loadContent(bookmark.part);
 188         } else {
 189             goToPosition(bookmark.pos);
 190         }
 191     }
 192 }
 193
 194 void BookView::goToPart(int part, const QString &fragment)
 195 {
 196     TRACE;
 197     if (mBook) {
 198         if (part != contentIndex) {
 199             qDebug() << "Loading new part" << part;
 200             restoreFragmentAfterLoad = true;
 201             fragmentAfterLoad = fragment;
 202             loadContent(part);
 203         } else {
 204             goToFragment(fragment);
 205             showProgress();
 206         }
 207     }
 208 }
 209
 210 void BookView::goToFragment(const QString &fragment)
 211 {
 212     TRACE;
 213     if (!fragment.isEmpty()) {
 214         QVariant ret = page()->mainFrame()->evaluateJavaScript(
 215                 QString("window.location='") + fragment + "'");
 216         qDebug() << ret;
 217         setLastBookmark();
 218     }
 219 }
 220
 221 void BookView::onLoadFinished(bool ok)
 222 {
 223     TRACE;
 224     if (!ok) {
 225         qDebug() << "Not OK";
 226         return;
 227     }
 228     loaded = true;
 229     onSettingsChanged("scheme");
 230     onSettingsChanged("zoom");
 231     onSettingsChanged("font");
 232     emit partLoadEnd(contentIndex);
 233     showProgress();
 234 }
 235
 236 void BookView::onSettingsChanged(const QString &key)
 237 {
 238     TRACE;
 239     qDebug() << key << Settings::instance()->value(key);
 240
 241     if (key == "zoom") {
 242         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 243     }
 244     else if (key == "font") {
 245         QString face = Settings::instance()->value(key).toString();
 246         settings()->setFontFamily(QWebSettings::StandardFont, face);
 247     }
 248     else if (key == "scheme") {
 249         QWebFrame *frame = page()->mainFrame();
 250         QString scheme = Settings::instance()->value("scheme").toString();
 251         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 252             (scheme != "default")) {
 253             scheme = "default";
 254         }
 255         QFile script(":/styles/" + scheme + ".js");
 256         script.open(QFile::ReadOnly);
 257         QString scriptText = script.readAll();
 258         script.close();
 259         QVariant ret = frame->evaluateJavaScript(scriptText);
 260     }
 261 }
 262
 263 void BookView::paintEvent(QPaintEvent *e)
 264 {
 265     QWebView::paintEvent(e);
 266     if (!mBook || !loaded) {
 267         return;
 268     }
 269
 270     // Paint bookmarks
 271     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 272     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 273     QPainter painter(this);
 274     foreach (Book::Bookmark b, mBook->bookmarks()) {
 275         if (b.part != contentIndex) {
 276             continue;
 277         }
 278         int height = contentsHeight;
 279         int bookmarkPos = (int)((qreal)height * (qreal)b.pos);
 280         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 281     }
 282 }
 283
 284 void BookView::mousePressEvent(QMouseEvent *e)
 285 {
 286     QWebView::mousePressEvent(e);
 287 #if defined(Q_WS_MAEMO_5)
 288     // Start monitoring kinetic scroll
 289     if (scrollerMonitor) {
 290         killTimer(scrollerMonitor);
 291         scrollerMonitor = 0;
 292     }
 293     if (scroller) {
 294         scrollerMonitor = startTimer(500);
 295     }
 296 #else
 297     // Handle mouse presses on the scroll bar
 298     QWebFrame *frame = page()->mainFrame();
 299     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 300         e->accept();
 301         return;
 302     }
 303 #endif // Q_WS_MAEMO_5
 304     e->ignore();
 305 }
 306
 307 void BookView::wheelEvent(QWheelEvent *e)
 308 {
 309     QWebView::wheelEvent(e);
 310     showProgress();
 311 }
 312
 313 void BookView::addBookmark(const QString &note)
 314 {
 315     TRACE;
 316     if (!mBook) {
 317         return;
 318     }
 319     int y = page()->mainFrame()->scrollPosition().y();
 320     int height = page()->mainFrame()->contentsSize().height();
 321     qDebug() << ((qreal)y / (qreal)height);
 322     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height, note);
 323     update();
 324 }
 325
 326 QString BookView::tmpPath()
 327 {
 328     return QDir::tempPath() + "/dorian";
 329 }
 330
 331 bool BookView::eventFilter(QObject *o, QEvent *e)
 332 {
 333 #if 0
 334     if (e->type() != QEvent::Paint && e->type() != QEvent::MouseMove) {
 335         if (e->type() == QEvent::Resize) {
 336             qDebug() << "BookView::eventFilter QEvent::Resize to"
 337                     << page()->mainFrame()->contentsSize().height();
 338         } else if (e->type() == QEvent::Timer) {
 339             qDebug() << "BookView::eventFilter" << "QEvent::Timer"
 340                     << ((QTimerEvent *)e)->timerId();
 341         } else {
 342             qDebug() << "BookView::eventFilter" << Trace::event(e->type());
 343         }
 344     }
 345 #endif
 346
 347     // Work around Qt bug that sometimes selects web view contents during swipe
 348     switch (e->type()) {
 349     case QEvent::MouseButtonPress:
 350         emit suppressedMouseButtonPress();
 351         mousePressed = true;
 352         break;
 353     case QEvent::MouseButtonRelease:
 354         showProgress();
 355         mousePressed = false;
 356         break;
 357     case QEvent::MouseMove:
 358         if (mousePressed) {
 359             return true;
 360         }
 361         break;
 362     case QEvent::MouseButtonDblClick:
 363         return true;
 364     default:
 365         break;
 366     }
 367
 368     return QObject::eventFilter(o, e);
 369 }
 370
 371 void BookView::addJavaScriptObjects()
 372 {
 373     page()->mainFrame()->addToJavaScriptWindowObject("bv", this);
 374 }
 375
 376 void BookView::onContentsSizeChanged(const QSize &size)
 377 {
 378     TRACE;
 379     contentsHeight = size.height();
 380     if (restoreFragmentAfterLoad) {
 381         qDebug() << "Restorint to fragment" << fragmentAfterLoad;
 382         goToFragment(fragmentAfterLoad);
 383     } else if (restorePositionAfterLoad) {
 384         qDebug() << "Restoring to position";
 385         goToPosition(positionAfterLoad);
 386     }
 387     restorePositionAfterLoad = false;
 388     restoreFragmentAfterLoad = false;
 389 }
 390
 391 #ifdef Q_WS_MAEMO_5
 392
 393 void BookView::leaveEvent(QEvent *e)
 394 {
 395     TRACE;
 396     // Save current position, to be restored later
 397     setLastBookmark();
 398     QWebView::leaveEvent(e);
 399 }
 400
 401 void BookView::enterEvent(QEvent *e)
 402 {
 403     TRACE;
 404     // Restore position saved at Leave event. This seems to be required,
 405     // after temporarily switching from portrait to landscape and back
 406     restoreLastBookmark();
 407     QWebView::enterEvent(e);
 408 }
 409
 410 #endif // Q_WS_MAEMO_5
 411
 412 void BookView::goToPosition(qreal position)
 413 {
 414     int scrollPos = (int)((qreal)contentsHeight * position);
 415     page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 416     // FIXME: update();
 417     qDebug() << "BookView::goToPosition: To" << scrollPos << "("
 418             << (position * 100) << "%, height" << contentsHeight << ")";
 419 }
 420
 421 void BookView::showProgress()
 422 {
 423     if (mBook) {
 424         qreal pos = (qreal)(page()->mainFrame()->scrollPosition().y()) /
 425                     (qreal)contentsHeight;
 426         emit progress(mBook->getProgress(contentIndex, pos));
 427     }
 428 }
 429
 430 void BookView::timerEvent(QTimerEvent *e)
 431 {
 432 #if defined(Q_WS_MAEMO_5)
 433     if (e->timerId() == scrollerMonitor) {
 434         if (scroller &&
 435             ((scroller->state() == QAbstractKineticScroller::AutoScrolling) ||
 436              (scroller->state() == QAbstractKineticScroller::Pushing))) {
 437             showProgress();
 438         } else {
 439             killTimer(scrollerMonitor);
 440             scrollerMonitor = -1;
 441         }
 442     }
 443 #endif
 444     QWebView::timerEvent(e);
 445 }
 446
 447 void BookView::keyPressEvent(QKeyEvent *event)
 448 {
 449     switch (event->key()) {
 450     case Qt::Key_F7:
 451         goNextPage();
 452         event->accept();
 453         break;
 454     case Qt::Key_F8:
 455         goPreviousPage();
 456         event->accept();
 457         break;
 458     default:
 459         ;
 460     }
 461     QWebView::keyPressEvent(event);
 462 }
 463
 464 void BookView::goPreviousPage()
 465 {
 466     QWebFrame *frame = page()->mainFrame();
 467     int pos = frame->scrollPosition().y();
 468     frame->scroll(0, -height());
 469     if (pos == frame->scrollPosition().y()) {
 470         if (contentIndex > 0) {
 471             Book::Bookmark bookmark(contentIndex - 1, 1.0);
 472             mBook->setLastBookmark(contentIndex - 1, 1.0);
 473             goToBookmark(bookmark);
 474         }
 475     } else {
 476         showProgress();
 477     }
 478 }
 479
 480 void BookView::goNextPage()
 481 {
 482     TRACE;
 483     QWebFrame *frame = page()->mainFrame();
 484     int pos = frame->scrollPosition().y();
 485     frame->scroll(0, height());
 486     if (pos == frame->scrollPosition().y()) {
 487         goNext();
 488     } else {
 489         setLastBookmark();
 490         showProgress();
 491     }
 492 }