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

   1 #include <QDebug>
   2 #include <QWebFrame>
   3 #include <QMouseEvent>
   4 #include <QFile>
   5 #include <QDir>
   6
   7 #include "book.h"
   8 #include "bookview.h"
   9 #include "library.h"
  10 #include "selectionsuppressor.h"
  11 #include "settings.h"
  12
  13 #ifdef Q_WS_MAC
  14 #   define ICON_PREFIX ":/icons/mac/"
  15 #else
  16 #   define ICON_PREFIX ":/icons/"
  17 #endif
  18
  19 BookView::BookView(QWidget *parent):
  20     QWebView(parent), contentIndex(-1), mBook(0),
  21     restore(true), restorePos(0), loadFinished(false)
  22 {
  23     settings()->setAttribute(QWebSettings::AutoLoadImages, true);
  24     settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
  25     settings()->setAttribute(QWebSettings::PluginsEnabled, false);
  26     settings()->setAttribute(QWebSettings::ZoomTextOnly, true);
  27     settings()->setAttribute(QWebSettings::LocalContentCanAccessRemoteUrls,
  28                              false);
  29     page()->setContentEditable(false);
  30
  31 #if defined(Q_WS_MAEMO_5)
  32     (void)new SelectionSuppressor(this);
  33 #endif
  34     QWebFrame *frame = page()->mainFrame();
  35 #if defined(Q_WS_MAEMO_5)
  36     frame->setScrollBarPolicy(Qt::Vertical, Qt::ScrollBarAlwaysOff);
  37 #endif
  38     frame->setScrollBarPolicy(Qt::Horizontal, Qt::ScrollBarAlwaysOff);
  39
  40     bookmarkImage = QImage(":/icons/bookmark.png");
  41
  42     connect(this, SIGNAL(loadFinished(bool)), this, SLOT(onLoadFinished(bool)));
  43     connect(Settings::instance(), SIGNAL(valueChanged(const QString &)),
  44             this, SLOT(onSettingsChanged(const QString &)));
  45     Settings *s = Settings::instance();
  46     s->setValue("zoom", s->value("zoom", 160));
  47     s->setValue("font", s->value("font",
  48 #if defined(Q_WS_MAEMO_5) || defined(Q_WS_X11)
  49                                  "Serif"
  50 #elif defined(Q_WS_MAC)
  51                                  "Hoefler Text"
  52 #else
  53                                  "Times New Roman"
  54 #endif
  55                                  ));
  56     s->setValue("scheme", s->value("scheme", "default"));
  57     setBook(0);
  58
  59     extractIcons();
  60 }
  61
  62 BookView::~BookView()
  63 {
  64     removeIcons();
  65 }
  66
  67 void BookView::loadContent(int index)
  68 {
  69     if (!mBook) {
  70         return;
  71     }
  72     if ((index < 0) || (index >= mBook->toc.size())) {
  73         return;
  74     }
  75
  76     QString contentFile(mBook->content[mBook->toc[index]].href);
  77     if (mBook->toc[index] == "error") {
  78         setHtml(contentFile);
  79     }
  80     else {
  81         loadFinished = false;
  82         load(QUrl(contentFile));
  83     }
  84     contentIndex = index;
  85 }
  86
  87 void BookView::setBook(Book *book)
  88 {
  89     qDebug() << "Book::setBook" << (book? book->path(): "");
  90
  91     setLastBookmark();
  92     if (book != mBook) {
  93         mBook = book;
  94         if (book) {
  95             contentIndex = -1;
  96             book->open();
  97             goToBookmark(book->lastBookmark());
  98         }
  99         else {
 100             contentIndex = 0;
 101             setHtml(tr("No book"));
 102         }
 103     }
 104 }
 105
 106 Book *BookView::book()
 107 {
 108     return mBook;
 109 }
 110
 111 void BookView::goPrevious()
 112 {
 113     loadContent(contentIndex - 1);
 114 }
 115
 116 void BookView::goNext()
 117 {
 118     loadContent(contentIndex + 1);
 119 }
 120
 121 void BookView::setLastBookmark()
 122 {
 123     qDebug() << "BookView::setLastBookmark";
 124     if (mBook) {
 125         int height = page()->mainFrame()->contentsSize().height();
 126         int pos = page()->mainFrame()->scrollPosition().y();
 127         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 128     }
 129 }
 130
 131 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 132 {
 133     if (mBook) {
 134         restore = true;
 135         restorePos = bookmark.pos;
 136         if (bookmark.chapter != contentIndex) {
 137             loadContent(bookmark.chapter);
 138         } else {
 139             onLoadFinished(true);
 140         }
 141     }
 142 }
 143
 144 void BookView::onLoadFinished(bool ok)
 145 {
 146     qDebug() << "BookView::onLoadFinished" << ok;
 147     loadFinished = true;
 148     addNavigationBar();
 149     onSettingsChanged("scheme");
 150     emit chapterLoaded(contentIndex);
 151     if (restore) {
 152         restore = false;
 153         if (ok && mBook) {
 154             int height = page()->mainFrame()->contentsSize().height();
 155             int scrollPos = (qreal)height * restorePos;
 156             page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 157         }
 158     }
 159 }
 160
 161 void BookView::onSettingsChanged(const QString &key)
 162 {
 163     qDebug() << "BookView::onSettingsChanged" << key;
 164     if (key == "zoom") {
 165         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 166     }
 167     else if (key == "font") {
 168         QString face = Settings::instance()->value("font").toString();
 169         qDebug() << "" << face;
 170         settings()->setFontFamily(QWebSettings::StandardFont, face);
 171     }
 172     else if (key == "scheme") {
 173         QWebFrame *frame = page()->mainFrame();
 174         QString scheme = Settings::instance()->value("scheme").toString();
 175         qDebug() << "" << scheme;
 176         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 177             (scheme != "default")) {
 178             scheme = "default";
 179         }
 180         QFile script(":/styles/" + scheme + ".js");
 181         script.open(QFile::ReadOnly);
 182         QString scriptText = script.readAll();
 183         script.close();
 184         QVariant ret = frame->evaluateJavaScript(scriptText);
 185         qDebug() << "" << script.fileName() << ":" << scriptText;
 186         qDebug() << "" << ret;
 187     }
 188 }
 189
 190 void BookView::paintEvent(QPaintEvent *e)
 191 {
 192     QWebView::paintEvent(e);
 193     if (!mBook) {
 194         return;
 195     }
 196
 197     // Paint bookmarks
 198     if (!loadFinished) {
 199         return;
 200     }
 201     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 202     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 203     QPainter painter(this);
 204     foreach (Book::Bookmark b, mBook->bookmarks()) {
 205         if (b.chapter != contentIndex) {
 206             continue;
 207         }
 208         int height = page()->mainFrame()->contentsSize().height();
 209         int bookmarkPos = (qreal)height * (qreal)b.pos;
 210         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 211     }
 212 }
 213
 214 void BookView::mousePressEvent(QMouseEvent *e)
 215 {
 216     QWebView::mousePressEvent(e);
 217 #ifndef Q_WS_MAEMO_5
 218     QWebFrame *frame = page()->mainFrame();
 219     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 220         e->accept();
 221         return;
 222     }
 223 #endif
 224     e->ignore();
 225 }
 226
 227 void BookView::addBookmark()
 228 {
 229     int y = page()->mainFrame()->scrollPosition().y();
 230     int height = page()->mainFrame()->contentsSize().height();
 231     qDebug() << "BookView::addBookMark" << ((qreal)y / (qreal)height);
 232     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height);
 233     repaint();
 234 }
 235
 236 void BookView::addNavigationBar()
 237 {
 238     if (!mBook) {
 239         return;
 240     }
 241
 242     QString naviPrev =
 243             "<a href=\"javascript:bv.goPrevious();\">"
 244             "<img width=\"95\" height=\"95\" style=\"float:left;clear:none;\" "
 245             "src=\"file://"
 246             + tmpPath() +
 247             "/previous.png\" />"
 248             "</a>";
 249     QString naviNext =
 250             "<a href=\"javascript:bv.goNext();\">"
 251             "<img width=\"95\" height=\"95\" style=\"float:right;clear:none;\" "
 252             "src=\"file://"
 253             + tmpPath() +
 254             "/next.png\" />"
 255             "</a>";
 256     if (contentIndex == 0) {
 257         naviPrev = "";
 258     }
 259     if (contentIndex >= mBook->toc.size() - 1) {
 260         naviNext = "";
 261     }
 262
 263     QWebFrame *frame = page()->currentFrame();
 264     frame->addToJavaScriptWindowObject("bv", this);
 265     QString headerScript = "document.body.innerHTML = '" +
 266         naviPrev + naviNext + "<br />" + "' + document.body.innerHTML;";
 267     QString trailerScript = "document.body.innerHTML += '<br /><br />" +
 268         naviPrev + naviNext + "';";
 269
 270     frame->evaluateJavaScript(headerScript);
 271     frame->evaluateJavaScript(trailerScript);
 272 }
 273
 274 QString BookView::tmpPath()
 275 {
 276     return QDir::tempPath() + "/dorian";
 277 }
 278
 279 void BookView::extractIcons()
 280 {
 281     qDebug() << "BookView::extractIcons: Extracting to" << tmpPath();
 282
 283     QFile next(ICON_PREFIX + QString("/next.png"));
 284     QFile prev(ICON_PREFIX + QString("/previous.png"));
 285
 286     QDir().mkpath(tmpPath());
 287     next.copy(tmpPath() + "/next.png");
 288     prev.copy(tmpPath() + "/previous.png");
 289 }
 290
 291 void BookView::removeIcons()
 292 {
 293     QFile(ICON_PREFIX + QString("/next.png")).remove();
 294     QFile(ICON_PREFIX + QString("/previous.png")).remove();
 295     QDir().rmpath(tmpPath());
 296 }