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
  18 BookView::BookView(QWidget *parent):
  19     QWebView(parent), contentIndex(-1), mBook(0),
  20     restorePositionAfterLoad(false), positionAfterLoad(0), loaded(false),
  21     contentsHeight(0)
  22 {
  23     TRACE;
  24     settings()->setAttribute(QWebSettings::AutoLoadImages, true);
  25     settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
  26     settings()->setAttribute(QWebSettings::JavaEnabled, false);
  27     settings()->setAttribute(QWebSettings::PluginsEnabled, false);
  28     settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
  29     settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, false);
  30     settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, false);
  31     settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, false);
  32     settings()->setAttribute(QWebSettings::OfflineWebApplicationCacheEnabled,
  33                              false);
  34     settings()->setAttribute(QWebSettings::LocalStorageEnabled, false);
  35     settings()->setAttribute(QWebSettings::ZoomTextOnly, true);
  36     settings()->setAttribute(QWebSettings::LocalContentCanAccessRemoteUrls,
  37                              false);
  38     settings()->setDefaultTextEncoding("utf-8");
  39     page()->setContentEditable(false);
  40
  41 #if defined(Q_WS_MAEMO_5) || defined(Q_OS_SYMBIAN)
  42     // Suppress unwanted text selections on Maemo and Symbian
  43     installEventFilter(this);
  44 #endif
  45     QWebFrame *frame = page()->mainFrame();
  46 #if defined(Q_WS_MAEMO_5) || defined(Q_OS_SYMBIAN)
  47     frame->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
  48 #endif
  49     frame->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
  50
  51     bookmarkImage = QImage(":/icons/bookmark.png");
  52
  53     connect(this, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
  54     connect(frame, SIGNAL(javaScriptWindowObjectCleared()),
  55             this, SLOT(addJavaScriptObjects()));
  56     connect(frame, SIGNAL(contentsSizeChanged(const QSize &)),
  57             this, SLOT(onContentsSizeChanged(const QSize &)));
  58     connect(Settings::instance(), SIGNAL(valueChanged(const QString &)),
  59             this, SLOT(onSettingsChanged(const QString &)));
  60     Settings *s = Settings::instance();
  61     s->setValue("zoom", s->value("zoom", 160));
  62     s->setValue("font", s->value("font",
  63 #if defined(Q_WS_MAEMO_5) || defined(Q_WS_X11)
  64                                  "Serif"
  65 #elif defined(Q_WS_MAC)
  66                                  "Hoefler Text"
  67 #else
  68                                  "Times New Roman"
  69 #endif
  70                                  ));
  71     s->setValue("scheme", s->value("scheme", "default"));
  72     setBook(0);
  73
  74 #if defined(Q_WS_MAEMO_5)
  75     scrollerMonitor = 0;
  76     scroller = property("kineticScroller").value<QAbstractKineticScroller *>();
  77 #elif defined(Q_OS_SYMBIAN)
  78     FlickCharm *charm = new FlickCharm(this);
  79     charm->activateOn(this);
  80 #endif
  81 }
  82
  83 BookView::~BookView()
  84 {
  85     TRACE;
  86 }
  87
  88 void BookView::loadContent(int index)
  89 {
  90     TRACE;
  91     if (!mBook) {
  92         return;
  93     }
  94     if ((index < 0) || (index >= mBook->parts.size())) {
  95         return;
  96     }
  97
  98     QString contentFile(mBook->content[mBook->parts[index]].href);
  99     if (mBook->parts[index] == "error") {
 100         setHtml(contentFile);
 101     }
 102     else {
 103         loaded = false;
 104         emit partLoadStart(index);
 105         QUrl u = QUrl::fromLocalFile(QDir(mBook->rootPath()).
 106                                      absoluteFilePath(contentFile));
 107         qDebug() << "Loading" << u;
 108         load(u);
 109     }
 110     contentIndex = index;
 111 }
 112
 113 void BookView::setBook(Book *book)
 114 {
 115     TRACE;
 116
 117     // Save position in current book
 118     setLastBookmark();
 119
 120     // Open new book, restore last position
 121     if (book != mBook) {
 122         mBook = book;
 123         if (book) {
 124             contentIndex = -1;
 125             if (book->open()) {
 126                 restoreLastBookmark();
 127             } else {
 128                 mBook = 0;
 129                 contentIndex = 0;
 130                 setHtml(tr("Failed to open book"));
 131             }
 132         }
 133         else {
 134             contentIndex = 0;
 135             setHtml(tr("No book"));
 136         }
 137     }
 138 }
 139
 140 Book *BookView::book()
 141 {
 142     return mBook;
 143 }
 144
 145 void BookView::goPrevious()
 146 {
 147     TRACE;
 148     if (mBook && (contentIndex > 0)) {
 149         mBook->setLastBookmark(contentIndex - 1, 0);
 150         loadContent(contentIndex - 1);
 151     }
 152 }
 153
 154 void BookView::goNext()
 155 {
 156     TRACE;
 157     if (mBook && (contentIndex < (mBook->parts.size() - 1))) {
 158         mBook->setLastBookmark(contentIndex + 1, 0);
 159         loadContent(contentIndex + 1);
 160     }
 161 }
 162
 163 void BookView::setLastBookmark()
 164 {
 165     TRACE;
 166     if (mBook) {
 167         int height = contentsHeight;
 168         int pos = page()->mainFrame()->scrollPosition().y();
 169         qDebug() << QString("At %1 (%2%, height %3)").
 170                 arg(pos).arg((qreal)pos / (qreal)height * 100).arg(height);
 171         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 172     }
 173 }
 174
 175 void BookView::restoreLastBookmark()
 176 {
 177     TRACE;
 178     if (mBook) {
 179         goToBookmark(mBook->lastBookmark());
 180     }
 181 }
 182
 183 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 184 {
 185     TRACE;
 186     if (mBook) {
 187         if (bookmark.part != contentIndex) {
 188             qDebug () << "Loading new part" << bookmark.part;
 189             mBook->setLastBookmark(bookmark.part, bookmark.pos);
 190             restorePositionAfterLoad = true;
 191             positionAfterLoad = bookmark.pos;
 192             loadContent(bookmark.part);
 193         } else {
 194             goToPosition(bookmark.pos);
 195         }
 196     }
 197 }
 198
 199 void BookView::onLoadFinished(bool ok)
 200 {
 201     TRACE;
 202     if (!ok) {
 203         qDebug() << "Not OK";
 204         return;
 205     }
 206     loaded = true;
 207     onSettingsChanged("scheme");
 208     emit partLoadEnd(contentIndex);
 209     showProgress();
 210 }
 211
 212 void BookView::onSettingsChanged(const QString &key)
 213 {
 214     TRACE;
 215     if (key == "zoom") {
 216         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 217     }
 218     else if (key == "font") {
 219         QString face = Settings::instance()->value("font").toString();
 220         settings()->setFontFamily(QWebSettings::StandardFont, face);
 221     }
 222     else if (key == "scheme") {
 223         QWebFrame *frame = page()->mainFrame();
 224         QString scheme = Settings::instance()->value("scheme").toString();
 225         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 226             (scheme != "default")) {
 227             scheme = "default";
 228         }
 229         QFile script(":/styles/" + scheme + ".js");
 230         script.open(QFile::ReadOnly);
 231         QString scriptText = script.readAll();
 232         script.close();
 233         QVariant ret = frame->evaluateJavaScript(scriptText);
 234     }
 235 }
 236
 237 void BookView::paintEvent(QPaintEvent *e)
 238 {
 239     QWebView::paintEvent(e);
 240     if (!mBook || !loaded) {
 241         return;
 242     }
 243
 244     // Paint bookmarks
 245     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 246     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 247     QPainter painter(this);
 248     foreach (Book::Bookmark b, mBook->bookmarks()) {
 249         if (b.part != contentIndex) {
 250             continue;
 251         }
 252         int height = contentsHeight;
 253         int bookmarkPos = (int)((qreal)height * (qreal)b.pos);
 254         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 255     }
 256 }
 257
 258 void BookView::mousePressEvent(QMouseEvent *e)
 259 {
 260     QWebView::mousePressEvent(e);
 261 #ifdef Q_WS_MAEMO_5
 262     // Start monitoring kinetic scroll
 263     if (scrollerMonitor) {
 264         killTimer(scrollerMonitor);
 265         scrollerMonitor = 0;
 266     }
 267     if (scroller) {
 268         scrollerMonitor = startTimer(500);
 269     }
 270 #else
 271     // Handle mouse presses on the scroll bar
 272     QWebFrame *frame = page()->mainFrame();
 273     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 274         e->accept();
 275         return;
 276     }
 277 #endif // Q_WS_MAEMO_5
 278     e->ignore();
 279 }
 280
 281 void BookView::wheelEvent(QWheelEvent *e)
 282 {
 283     QWebView::wheelEvent(e);
 284     showProgress();
 285 }
 286
 287 void BookView::addBookmark(const QString &note)
 288 {
 289     TRACE;
 290     if (!mBook) {
 291         return;
 292     }
 293     int y = page()->mainFrame()->scrollPosition().y();
 294     int height = page()->mainFrame()->contentsSize().height();
 295     qDebug() << ((qreal)y / (qreal)height);
 296     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height, note);
 297     update();
 298 }
 299
 300 QString BookView::tmpPath()
 301 {
 302     return QDir::tempPath() + "/dorian";
 303 }
 304
 305 bool BookView::eventFilter(QObject *o, QEvent *e)
 306 {
 307     if (e->type() != QEvent::Paint && e->type() != QEvent::MouseMove) {
 308         if (e->type() == QEvent::Resize) {
 309             qDebug() << "BookView::eventFilter QEvent::Resize to"
 310                     << page()->mainFrame()->contentsSize().height();
 311         } else if (e->type() == QEvent::Timer) {
 312             qDebug() << "BookView::eventFilter" << "QEvent::Timer"
 313                     << ((QTimerEvent *)e)->timerId();
 314         } else {
 315             qDebug() << "BookView::eventFilter" << Trace::event(e->type());
 316         }
 317     }
 318
 319     // Work around Qt bug that sometimes selects web view contents during swipe
 320     switch (e->type()) {
 321     case QEvent::MouseButtonPress:
 322         emit suppressedMouseButtonPress();
 323         mousePressed = true;
 324         break;
 325     case QEvent::MouseButtonRelease:
 326         showProgress();
 327         mousePressed = false;
 328         break;
 329     case QEvent::MouseMove:
 330         if (mousePressed) {
 331             return true;
 332         }
 333         break;
 334     case QEvent::MouseButtonDblClick:
 335         return true;
 336     default:
 337         break;
 338     }
 339
 340     return QObject::eventFilter(o, e);
 341 }
 342
 343 void BookView::addJavaScriptObjects()
 344 {
 345     page()->mainFrame()->addToJavaScriptWindowObject("bv", this);
 346 }
 347
 348 void BookView::onContentsSizeChanged(const QSize &size)
 349 {
 350     contentsHeight = size.height();
 351     if (restorePositionAfterLoad) {
 352         qDebug() << "BookView::onContentSizeChanged: Time to restore";
 353         restorePositionAfterLoad = false;
 354         goToPosition(positionAfterLoad);
 355     }
 356 }
 357
 358 void BookView::leaveEvent(QEvent *e)
 359 {
 360     TRACE;
 361     // Save current position, to be restored later
 362     setLastBookmark();
 363     QWebView::leaveEvent(e);
 364 }
 365
 366 void BookView::enterEvent(QEvent *e)
 367 {
 368     TRACE;
 369     // Restore position saved at Leave event. This seems to be required,
 370     // after temporarily switching from portrait to landscape and back
 371     restoreLastBookmark();
 372     QWebView::enterEvent(e);
 373 }
 374
 375 void BookView::goToPosition(qreal position)
 376 {
 377     int scrollPos = (int)((qreal)contentsHeight * position);
 378     page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 379     // FIXME: update();
 380     qDebug() << "BookView::goToPosition: To" << scrollPos << "("
 381             << (position * 100) << "%, height" << contentsHeight << ")";
 382 }
 383
 384 void BookView::showProgress()
 385 {
 386     if (mBook) {
 387         qreal pos = (qreal)(page()->mainFrame()->scrollPosition().y()) /
 388                     (qreal)contentsHeight;
 389         emit progress(mBook->getProgress(contentIndex, pos));
 390     }
 391 }
 392
 393 void BookView::timerEvent(QTimerEvent *e)
 394 {
 395 #ifdef Q_WS_MAEMO_5
 396     if (e->timerId() == scrollerMonitor) {
 397         if (scroller &&
 398             ((scroller->state() == QAbstractKineticScroller::AutoScrolling) ||
 399              (scroller->state() == QAbstractKineticScroller::Pushing))) {
 400             showProgress();
 401         } else {
 402             killTimer(scrollerMonitor);
 403         }
 404     }
 405 #endif
 406     QWebView::timerEvent(e);
 407 }
 408
 409 void BookView::keyPressEvent(QKeyEvent* event)
 410 {
 411     switch (event->key()) {
 412     case Qt::Key_F7:
 413         goNextPage();
 414         event->accept();
 415         break;
 416     case Qt::Key_F8:
 417         goPreviousPage();
 418         event->accept();
 419         break;
 420     default:
 421         ;
 422     }
 423     QWebView::keyPressEvent(event);
 424 }
 425
 426 void BookView::goPreviousPage()
 427 {
 428     QWebFrame *frame = page()->mainFrame();
 429     int pos = frame->scrollPosition().y();
 430     frame->scroll(0, -height());
 431     if (pos == frame->scrollPosition().y()) {
 432         if (contentIndex > 0) {
 433             Book::Bookmark bookmark(contentIndex - 1, 1.0);
 434             mBook->setLastBookmark(contentIndex - 1, 1.0);
 435             goToBookmark(bookmark);
 436         }
 437     } else {
 438         showProgress();
 439     }
 440 }
 441
 442 void BookView::goNextPage()
 443 {
 444     TRACE;
 445     QWebFrame *frame = page()->mainFrame();
 446     int pos = frame->scrollPosition().y();
 447     frame->scroll(0, height());
 448     if (pos == frame->scrollPosition().y()) {
 449         goNext();
 450     } else {
 451         setLastBookmark();
 452         showProgress();
 453     }
 454 }