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

   1 #include <QDebug>
   2 #include <QWebFrame>
   3 #include <QMouseEvent>
   4 #include <QFile>
   5 #include <QDir>
   6 #include <QTimer>
   7
   8 #if defined(Q_WS_MAEMO_5)
   9 #   include <QAbstractKineticScroller>
  10 #elif defined(Q_OS_SYMBIAN)
  11 #   include "flickcharm.h"
  12 #endif
  13
  14 #include "book.h"
  15 #include "bookview.h"
  16 #include "library.h"
  17 #include "settings.h"
  18 #include "trace.h"
  19 #include "progress.h"
  20
  21 BookView::BookView(QWidget *parent):
  22     QWebView(parent), contentIndex(-1), mBook(0),
  23     restorePositionAfterLoad(false), positionAfterLoad(0), loaded(false),
  24     contentsHeight(0)
  25 {
  26     Trace t("BookView::BookView");
  27     settings()->setAttribute(QWebSettings::AutoLoadImages, true);
  28     settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
  29     settings()->setAttribute(QWebSettings::JavaEnabled, false);
  30     settings()->setAttribute(QWebSettings::PluginsEnabled, false);
  31     settings()->setAttribute(QWebSettings::PrivateBrowsingEnabled, true);
  32     settings()->setAttribute(QWebSettings::JavascriptCanOpenWindows, false);
  33     settings()->setAttribute(QWebSettings::JavascriptCanAccessClipboard, false);
  34     settings()->setAttribute(QWebSettings::OfflineStorageDatabaseEnabled, 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",
  66 #if defined(Q_WS_MAEMO_5) || defined(Q_WS_X11)
  67                                  "Serif"
  68 #elif defined(Q_WS_MAC)
  69                                  "Hoefler Text"
  70 #else
  71                                  "Times New Roman"
  72 #endif
  73                                  ));
  74     s->setValue("scheme", s->value("scheme", "default"));
  75     setBook(0);
  76
  77 #if defined(Q_WS_MAEMO_5)
  78     scrollerMonitor = 0;
  79     scroller = property("kineticScroller").value<QAbstractKineticScroller *>();
  80 #elif defined(Q_OS_SYMBIAN)
  81     FlickCharm *charm = new FlickCharm(this);
  82     charm->activateOn(this);
  83 #endif
  84 }
  85
  86 BookView::~BookView()
  87 {
  88     Trace t("BookView::~BookView");
  89 }
  90
  91 void BookView::loadContent(int index)
  92 {
  93     Trace t("BookView::loadContent");
  94     if (!mBook) {
  95         return;
  96     }
  97     if ((index < 0) || (index >= mBook->parts.size())) {
  98         return;
  99     }
 100
 101     QString contentFile(mBook->content[mBook->parts[index]].href);
 102     if (mBook->parts[index] == "error") {
 103         setHtml(contentFile);
 104     }
 105     else {
 106         loaded = false;
 107         emit partLoadStart(index);
 108         QUrl u = QUrl::fromLocalFile(QDir(mBook->rootPath()).
 109                                      absoluteFilePath(contentFile));
 110         qDebug() << "Loading" << u;
 111         load(u);
 112     }
 113     contentIndex = index;
 114 }
 115
 116 void BookView::setBook(Book *book)
 117 {
 118     Trace t("BookView::setBook");
 119
 120     // Save position in current book
 121     setLastBookmark();
 122
 123     // Open new book, restore last position
 124     if (book != mBook) {
 125         mBook = book;
 126         if (book) {
 127             contentIndex = -1;
 128             if (book->open()) {
 129                 restoreLastBookmark();
 130             } else {
 131                 mBook = 0;
 132                 contentIndex = 0;
 133                 setHtml(tr("Failed to open book"));
 134             }
 135         }
 136         else {
 137             contentIndex = 0;
 138             setHtml(tr("No book"));
 139         }
 140     }
 141 }
 142
 143 Book *BookView::book()
 144 {
 145     return mBook;
 146 }
 147
 148 void BookView::goPrevious()
 149 {
 150     Trace t("BookView::goPrevious");
 151     if (mBook && (contentIndex > 0)) {
 152         mBook->setLastBookmark(contentIndex - 1, 0);
 153         loadContent(contentIndex - 1);
 154     }
 155 }
 156
 157 void BookView::goNext()
 158 {
 159     Trace t("BookView::goNext");
 160     if (mBook && (contentIndex < (mBook->parts.size() - 1))) {
 161         mBook->setLastBookmark(contentIndex + 1, 0);
 162         loadContent(contentIndex + 1);
 163     }
 164 }
 165
 166 void BookView::setLastBookmark()
 167 {
 168     Trace t("BookView::setLastBookmark");
 169     if (mBook) {
 170         int height = contentsHeight;
 171         int pos = page()->mainFrame()->scrollPosition().y();
 172         qDebug() << QString("At %1 (%2%, height %3)").
 173                 arg(pos).arg((qreal)pos / (qreal)height * 100).arg(height);
 174         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 175     }
 176 }
 177
 178 void BookView::restoreLastBookmark()
 179 {
 180     Trace t("BookView::restoreLastBookmark");
 181     if (mBook) {
 182         goToBookmark(mBook->lastBookmark());
 183     }
 184 }
 185
 186 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 187 {
 188     Trace t("BookView::goToBookmark");
 189     if (mBook) {
 190         if (bookmark.part != contentIndex) {
 191             qDebug () << "Loading new part" << bookmark.part;
 192             mBook->setLastBookmark(bookmark.part, bookmark.pos);
 193             restorePositionAfterLoad = true;
 194             positionAfterLoad = bookmark.pos;
 195             loadContent(bookmark.part);
 196         } else {
 197             goToPosition(bookmark.pos);
 198         }
 199     }
 200 }
 201
 202 void BookView::onLoadFinished(bool ok)
 203 {
 204     Trace t("BookView::onLoadFinished");
 205     if (!ok) {
 206         qDebug() << "Not OK";
 207         return;
 208     }
 209     loaded = true;
 210     onSettingsChanged("scheme");
 211     emit partLoadEnd(contentIndex);
 212     showProgress();
 213 }
 214
 215 void BookView::onSettingsChanged(const QString &key)
 216 {
 217     Trace t("BookView::onSettingsChanged " + key);
 218     if (key == "zoom") {
 219         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 220     }
 221     else if (key == "font") {
 222         QString face = Settings::instance()->value("font").toString();
 223         settings()->setFontFamily(QWebSettings::StandardFont, face);
 224     }
 225     else if (key == "scheme") {
 226         QWebFrame *frame = page()->mainFrame();
 227         QString scheme = Settings::instance()->value("scheme").toString();
 228         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 229             (scheme != "default")) {
 230             scheme = "default";
 231         }
 232         QFile script(":/styles/" + scheme + ".js");
 233         script.open(QFile::ReadOnly);
 234         QString scriptText = script.readAll();
 235         script.close();
 236         QVariant ret = frame->evaluateJavaScript(scriptText);
 237     }
 238 }
 239
 240 void BookView::paintEvent(QPaintEvent *e)
 241 {
 242     QWebView::paintEvent(e);
 243     if (!mBook || !loaded) {
 244         return;
 245     }
 246
 247     // Paint bookmarks
 248     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 249     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 250     QPainter painter(this);
 251     foreach (Book::Bookmark b, mBook->bookmarks()) {
 252         if (b.part != contentIndex) {
 253             continue;
 254         }
 255         int height = contentsHeight;
 256         int bookmarkPos = (int)((qreal)height * (qreal)b.pos);
 257         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 258     }
 259 }
 260
 261 void BookView::mousePressEvent(QMouseEvent *e)
 262 {
 263     QWebView::mousePressEvent(e);
 264 #ifdef Q_WS_MAEMO_5
 265     // Start monitoring kinetic scroll
 266     if (scrollerMonitor) {
 267         killTimer(scrollerMonitor);
 268         scrollerMonitor = 0;
 269     }
 270     if (scroller) {
 271         scrollerMonitor = startTimer(500);
 272     }
 273 #else
 274     // Handle mouse presses on the scroll bar
 275     QWebFrame *frame = page()->mainFrame();
 276     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 277         e->accept();
 278         return;
 279     }
 280 #endif // Q_WS_MAEMO_5
 281     e->ignore();
 282 }
 283
 284 void BookView::wheelEvent(QWheelEvent *e)
 285 {
 286     QWebView::wheelEvent(e);
 287     showProgress();
 288 }
 289
 290 void BookView::addBookmark()
 291 {
 292     Trace t("BookView::addBookmark");
 293     if (!mBook) {
 294         return;
 295     }
 296     int y = page()->mainFrame()->scrollPosition().y();
 297     int height = page()->mainFrame()->contentsSize().height();
 298     qDebug() << ((qreal)y / (qreal)height);
 299     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height);
 300     update();
 301 }
 302
 303 QString BookView::tmpPath()
 304 {
 305     return QDir::tempPath() + "/dorian";
 306 }
 307
 308 bool BookView::eventFilter(QObject *o, QEvent *e)
 309 {
 310     if (e->type() != QEvent::Paint && e->type() != QEvent::MouseMove) {
 311         if (e->type() == QEvent::Resize) {
 312             qDebug() << "BookView::eventFilter QEvent::Resize to"
 313                     << page()->mainFrame()->contentsSize().height();
 314         } else if (e->type() == QEvent::Timer) {
 315             qDebug() << "BookView::eventFilter" << "QEvent::Timer"
 316                     << ((QTimerEvent *)e)->timerId();
 317         } else {
 318             qDebug() << "BookView::eventFilter" << Trace::event(e->type());
 319         }
 320     }
 321
 322     // Work around Qt bug that sometimes selects web view contents during swipe
 323     switch (e->type()) {
 324     case QEvent::MouseButtonPress:
 325         emit suppressedMouseButtonPress();
 326         mousePressed = true;
 327         break;
 328     case QEvent::MouseButtonRelease:
 329         showProgress();
 330         mousePressed = false;
 331         break;
 332     case QEvent::MouseMove:
 333         if (mousePressed) {
 334             return true;
 335         }
 336         break;
 337     case QEvent::MouseButtonDblClick:
 338         return true;
 339     default:
 340         break;
 341     }
 342
 343     return QObject::eventFilter(o, e);
 344 }
 345
 346 void BookView::addJavaScriptObjects()
 347 {
 348     page()->mainFrame()->addToJavaScriptWindowObject("bv", this);
 349 }
 350
 351 void BookView::onContentsSizeChanged(const QSize &size)
 352 {
 353     contentsHeight = size.height();
 354     if (restorePositionAfterLoad) {
 355         qDebug() << "BookView::onContentSizeChanged: Time to restore";
 356         restorePositionAfterLoad = false;
 357         goToPosition(positionAfterLoad);
 358     }
 359 }
 360
 361 void BookView::leaveEvent(QEvent *e)
 362 {
 363     Trace t("BookView::leaveEvent");
 364     // Save current position, to be restored later
 365     setLastBookmark();
 366     QWebView::leaveEvent(e);
 367 }
 368
 369 void BookView::enterEvent(QEvent *e)
 370 {
 371     Trace t("BookView::enterEvent");
 372     // Restore position saved at Leave event. This seems to be required,
 373     // after temporarily switching from portrait to landscape and back
 374     restoreLastBookmark();
 375     QWebView::enterEvent(e);
 376 }
 377
 378 void BookView::goToPosition(qreal position)
 379 {
 380     int scrollPos = (int)((qreal)contentsHeight * position);
 381     page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 382     // FIXME: update();
 383     qDebug() << "BookView::goToPosition: To" << scrollPos << "("
 384             << (position * 100) << "%, height" << contentsHeight << ")";
 385 }
 386
 387 void BookView::showProgress()
 388 {
 389     if (mBook) {
 390         qreal pos = (qreal)(page()->mainFrame()->scrollPosition().y()) /
 391                     (qreal)contentsHeight;
 392         emit progress(mBook->getProgress(contentIndex, pos));
 393     }
 394 }
 395
 396 void BookView::timerEvent(QTimerEvent *e)
 397 {
 398 #ifdef Q_WS_MAEMO_5
 399     if (e->timerId() == scrollerMonitor) {
 400         if (scroller &&
 401             ((scroller->state() == QAbstractKineticScroller::AutoScrolling) ||
 402              (scroller->state() == QAbstractKineticScroller::Pushing))) {
 403             showProgress();
 404         } else {
 405             killTimer(scrollerMonitor);
 406         }
 407     }
 408 #endif
 409     QWebView::timerEvent(e);
 410 }
 411
 412 void BookView::keyPressEvent(QKeyEvent* event)
 413 {
 414     switch (event->key()) {
 415     case Qt::Key_F7:
 416         goNextPage();
 417         event->accept();
 418         break;
 419     case Qt::Key_F8:
 420         goPreviousPage();
 421         event->accept();
 422         break;
 423     default:
 424         ;
 425     }
 426     QWebView::keyPressEvent(event);
 427 }
 428
 429 void BookView::goPreviousPage()
 430 {
 431     QWebFrame *frame = page()->mainFrame();
 432     int pos = frame->scrollPosition().y();
 433     frame->scroll(0, -height());
 434     if (pos == frame->scrollPosition().y()) {
 435         if (contentIndex > 0) {
 436             Book::Bookmark bookmark(contentIndex - 1, 1.0);
 437             mBook->setLastBookmark(contentIndex - 1, 1.0);
 438             goToBookmark(bookmark);
 439         }
 440     } else {
 441         showProgress();
 442     }
 443 }
 444
 445 void BookView::goNextPage()
 446 {
 447     Trace t("BookView::goNextPage");
 448     QWebFrame *frame = page()->mainFrame();
 449     int pos = frame->scrollPosition().y();
 450     frame->scroll(0, height());
 451     if (pos == frame->scrollPosition().y()) {
 452         goNext();
 453     } else {
 454         setLastBookmark();
 455         showProgress();
 456     }
 457 }