git.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     FlickCharm *charm = new FlickCharm(this);
  74     charm->activateOn(this);
  75 #endif
  76 }
  77
  78 BookView::~BookView()
  79 {
  80     TRACE;
  81 }
  82
  83 void BookView::loadContent(int index)
  84 {
  85     TRACE;
  86     if (!mBook) {
  87         return;
  88     }
  89     if ((index < 0) || (index >= mBook->parts.size())) {
  90         return;
  91     }
  92
  93     QString contentFile(mBook->content[mBook->parts[index]].href);
  94     if (mBook->parts[index] == "error") {
  95         setHtml(contentFile);
  96     }
  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::onLoadFinished(bool ok)
 195 {
 196     TRACE;
 197     if (!ok) {
 198         qDebug() << "Not OK";
 199         return;
 200     }
 201     loaded = true;
 202     onSettingsChanged("scheme");
 203     emit partLoadEnd(contentIndex);
 204     showProgress();
 205 }
 206
 207 void BookView::onSettingsChanged(const QString &key)
 208 {
 209     TRACE;
 210     qDebug() << key << Settings::instance()->value(key);
 211
 212     if (key == "zoom") {
 213         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 214     }
 215     else if (key == "font") {
 216         QString face = Settings::instance()->value(key).toString();
 217         settings()->setFontFamily(QWebSettings::StandardFont, face);
 218     }
 219     else if (key == "scheme") {
 220         QWebFrame *frame = page()->mainFrame();
 221         QString scheme = Settings::instance()->value("scheme").toString();
 222         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 223             (scheme != "default")) {
 224             scheme = "default";
 225         }
 226         QFile script(":/styles/" + scheme + ".js");
 227         script.open(QFile::ReadOnly);
 228         QString scriptText = script.readAll();
 229         script.close();
 230         QVariant ret = frame->evaluateJavaScript(scriptText);
 231     }
 232 }
 233
 234 void BookView::paintEvent(QPaintEvent *e)
 235 {
 236     QWebView::paintEvent(e);
 237     if (!mBook || !loaded) {
 238         return;
 239     }
 240
 241     // Paint bookmarks
 242     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 243     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 244     QPainter painter(this);
 245     foreach (Book::Bookmark b, mBook->bookmarks()) {
 246         if (b.part != contentIndex) {
 247             continue;
 248         }
 249         int height = contentsHeight;
 250         int bookmarkPos = (int)((qreal)height * (qreal)b.pos);
 251         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 252     }
 253 }
 254
 255 void BookView::mousePressEvent(QMouseEvent *e)
 256 {
 257     QWebView::mousePressEvent(e);
 258 #ifdef Q_WS_MAEMO_5
 259     // Start monitoring kinetic scroll
 260     if (scrollerMonitor) {
 261         killTimer(scrollerMonitor);
 262         scrollerMonitor = 0;
 263     }
 264     if (scroller) {
 265         scrollerMonitor = startTimer(500);
 266     }
 267 #else
 268     // Handle mouse presses on the scroll bar
 269     QWebFrame *frame = page()->mainFrame();
 270     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 271         e->accept();
 272         return;
 273     }
 274 #endif // Q_WS_MAEMO_5
 275     e->ignore();
 276 }
 277
 278 void BookView::wheelEvent(QWheelEvent *e)
 279 {
 280     QWebView::wheelEvent(e);
 281     showProgress();
 282 }
 283
 284 void BookView::addBookmark(const QString &note)
 285 {
 286     TRACE;
 287     if (!mBook) {
 288         return;
 289     }
 290     int y = page()->mainFrame()->scrollPosition().y();
 291     int height = page()->mainFrame()->contentsSize().height();
 292     qDebug() << ((qreal)y / (qreal)height);
 293     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height, note);
 294     update();
 295 }
 296
 297 QString BookView::tmpPath()
 298 {
 299     return QDir::tempPath() + "/dorian";
 300 }
 301
 302 bool BookView::eventFilter(QObject *o, QEvent *e)
 303 {
 304     if (e->type() != QEvent::Paint && e->type() != QEvent::MouseMove) {
 305         if (e->type() == QEvent::Resize) {
 306             qDebug() << "BookView::eventFilter QEvent::Resize to"
 307                     << page()->mainFrame()->contentsSize().height();
 308         } else if (e->type() == QEvent::Timer) {
 309             qDebug() << "BookView::eventFilter" << "QEvent::Timer"
 310                     << ((QTimerEvent *)e)->timerId();
 311         } else {
 312             qDebug() << "BookView::eventFilter" << Trace::event(e->type());
 313         }
 314     }
 315
 316     // Work around Qt bug that sometimes selects web view contents during swipe
 317     switch (e->type()) {
 318     case QEvent::MouseButtonPress:
 319         emit suppressedMouseButtonPress();
 320         mousePressed = true;
 321         break;
 322     case QEvent::MouseButtonRelease:
 323         showProgress();
 324         mousePressed = false;
 325         break;
 326     case QEvent::MouseMove:
 327         if (mousePressed) {
 328             return true;
 329         }
 330         break;
 331     case QEvent::MouseButtonDblClick:
 332         return true;
 333     default:
 334         break;
 335     }
 336
 337     return QObject::eventFilter(o, e);
 338 }
 339
 340 void BookView::addJavaScriptObjects()
 341 {
 342     page()->mainFrame()->addToJavaScriptWindowObject("bv", this);
 343 }
 344
 345 void BookView::onContentsSizeChanged(const QSize &size)
 346 {
 347     contentsHeight = size.height();
 348     if (restorePositionAfterLoad) {
 349         qDebug() << "BookView::onContentSizeChanged: Time to restore";
 350         restorePositionAfterLoad = false;
 351         goToPosition(positionAfterLoad);
 352     }
 353 }
 354
 355 void BookView::leaveEvent(QEvent *e)
 356 {
 357     TRACE;
 358     // Save current position, to be restored later
 359     setLastBookmark();
 360     QWebView::leaveEvent(e);
 361 }
 362
 363 void BookView::enterEvent(QEvent *e)
 364 {
 365     TRACE;
 366     // Restore position saved at Leave event. This seems to be required,
 367     // after temporarily switching from portrait to landscape and back
 368     restoreLastBookmark();
 369     QWebView::enterEvent(e);
 370 }
 371
 372 void BookView::goToPosition(qreal position)
 373 {
 374     int scrollPos = (int)((qreal)contentsHeight * position);
 375     page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 376     // FIXME: update();
 377     qDebug() << "BookView::goToPosition: To" << scrollPos << "("
 378             << (position * 100) << "%, height" << contentsHeight << ")";
 379 }
 380
 381 void BookView::showProgress()
 382 {
 383     if (mBook) {
 384         qreal pos = (qreal)(page()->mainFrame()->scrollPosition().y()) /
 385                     (qreal)contentsHeight;
 386         emit progress(mBook->getProgress(contentIndex, pos));
 387     }
 388 }
 389
 390 void BookView::timerEvent(QTimerEvent *e)
 391 {
 392 #ifdef Q_WS_MAEMO_5
 393     if (e->timerId() == scrollerMonitor) {
 394         if (scroller &&
 395             ((scroller->state() == QAbstractKineticScroller::AutoScrolling) ||
 396              (scroller->state() == QAbstractKineticScroller::Pushing))) {
 397             showProgress();
 398         } else {
 399             killTimer(scrollerMonitor);
 400         }
 401     }
 402 #endif
 403     QWebView::timerEvent(e);
 404 }
 405
 406 void BookView::keyPressEvent(QKeyEvent* event)
 407 {
 408     switch (event->key()) {
 409     case Qt::Key_F7:
 410         goNextPage();
 411         event->accept();
 412         break;
 413     case Qt::Key_F8:
 414         goPreviousPage();
 415         event->accept();
 416         break;
 417     default:
 418         ;
 419     }
 420     QWebView::keyPressEvent(event);
 421 }
 422
 423 void BookView::goPreviousPage()
 424 {
 425     QWebFrame *frame = page()->mainFrame();
 426     int pos = frame->scrollPosition().y();
 427     frame->scroll(0, -height());
 428     if (pos == frame->scrollPosition().y()) {
 429         if (contentIndex > 0) {
 430             Book::Bookmark bookmark(contentIndex - 1, 1.0);
 431             mBook->setLastBookmark(contentIndex - 1, 1.0);
 432             goToBookmark(bookmark);
 433         }
 434     } else {
 435         showProgress();
 436     }
 437 }
 438
 439 void BookView::goNextPage()
 440 {
 441     TRACE;
 442     QWebFrame *frame = page()->mainFrame();
 443     int pos = frame->scrollPosition().y();
 444     frame->scroll(0, height());
 445     if (pos == frame->scrollPosition().y()) {
 446         goNext();
 447     } else {
 448         setLastBookmark();
 449         showProgress();
 450     }
 451 }