vcs.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         emit chapterLoadStart(index);
  83         load(QUrl(contentFile));
  84     }
  85     contentIndex = index;
  86 }
  87
  88 void BookView::setBook(Book *book)
  89 {
  90     qDebug() << "Book::setBook" << (book? book->path(): "");
  91
  92     setLastBookmark();
  93     if (book != mBook) {
  94         mBook = book;
  95         if (book) {
  96             contentIndex = -1;
  97             book->open();
  98             goToBookmark(book->lastBookmark());
  99         }
 100         else {
 101             contentIndex = 0;
 102             setHtml(tr("No book"));
 103         }
 104     }
 105 }
 106
 107 Book *BookView::book()
 108 {
 109     return mBook;
 110 }
 111
 112 void BookView::goPrevious()
 113 {
 114     loadContent(contentIndex - 1);
 115 }
 116
 117 void BookView::goNext()
 118 {
 119     loadContent(contentIndex + 1);
 120 }
 121
 122 void BookView::setLastBookmark()
 123 {
 124     qDebug() << "BookView::setLastBookmark";
 125     if (mBook) {
 126         int height = page()->mainFrame()->contentsSize().height();
 127         int pos = page()->mainFrame()->scrollPosition().y();
 128         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 129     }
 130 }
 131
 132 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 133 {
 134     if (mBook) {
 135         restore = true;
 136         restorePos = bookmark.pos;
 137         if (bookmark.chapter != contentIndex) {
 138             loadContent(bookmark.chapter);
 139         } else {
 140             onLoadFinished(true);
 141         }
 142     }
 143 }
 144
 145 void BookView::onLoadFinished(bool ok)
 146 {
 147     qDebug() << "BookView::onLoadFinished" << ok;
 148     loadFinished = true;
 149     addNavigationBar();
 150     onSettingsChanged("scheme");
 151     emit chapterLoadEnd(contentIndex);
 152     if (restore) {
 153         restore = false;
 154         if (ok && mBook) {
 155             int height = page()->mainFrame()->contentsSize().height();
 156             int scrollPos = (qreal)height * restorePos;
 157             page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 158         }
 159     }
 160 }
 161
 162 void BookView::onSettingsChanged(const QString &key)
 163 {
 164     qDebug() << "BookView::onSettingsChanged" << key;
 165     if (key == "zoom") {
 166         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 167     }
 168     else if (key == "font") {
 169         QString face = Settings::instance()->value("font").toString();
 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         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 176             (scheme != "default")) {
 177             scheme = "default";
 178         }
 179         QFile script(":/styles/" + scheme + ".js");
 180         script.open(QFile::ReadOnly);
 181         QString scriptText = script.readAll();
 182         script.close();
 183         QVariant ret = frame->evaluateJavaScript(scriptText);
 184     }
 185 }
 186
 187 void BookView::paintEvent(QPaintEvent *e)
 188 {
 189     QWebView::paintEvent(e);
 190     if (!mBook) {
 191         return;
 192     }
 193
 194     // Paint bookmarks
 195     if (!loadFinished) {
 196         return;
 197     }
 198     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 199     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 200     QPainter painter(this);
 201     foreach (Book::Bookmark b, mBook->bookmarks()) {
 202         if (b.chapter != contentIndex) {
 203             continue;
 204         }
 205         int height = page()->mainFrame()->contentsSize().height();
 206         int bookmarkPos = (qreal)height * (qreal)b.pos;
 207         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 208     }
 209 }
 210
 211 void BookView::mousePressEvent(QMouseEvent *e)
 212 {
 213     QWebView::mousePressEvent(e);
 214 #ifndef Q_WS_MAEMO_5
 215     QWebFrame *frame = page()->mainFrame();
 216     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 217         e->accept();
 218         return;
 219     }
 220 #endif
 221     e->ignore();
 222 }
 223
 224 void BookView::addBookmark()
 225 {
 226     int y = page()->mainFrame()->scrollPosition().y();
 227     int height = page()->mainFrame()->contentsSize().height();
 228     qDebug() << "BookView::addBookMark" << ((qreal)y / (qreal)height);
 229     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height);
 230     repaint();
 231 }
 232
 233 void BookView::addNavigationBar()
 234 {
 235     if (!mBook) {
 236         return;
 237     }
 238
 239     QString naviPrev =
 240             "<a href=\"javascript:bv.goPrevious();\">"
 241             "<img width=\"95\" height=\"95\" style=\"float:left;clear:none;\" "
 242             "src=\"file://"
 243             + tmpPath() +
 244             "/previous.png\" />"
 245             "</a>";
 246     QString naviNext =
 247             "<a href=\"javascript:bv.goNext();\">"
 248             "<img width=\"95\" height=\"95\" style=\"float:right;clear:none;\" "
 249             "src=\"file://"
 250             + tmpPath() +
 251             "/next.png\" />"
 252             "</a>";
 253     if (contentIndex == 0) {
 254         naviPrev = "";
 255     }
 256     if (contentIndex >= mBook->toc.size() - 1) {
 257         naviNext = "";
 258     }
 259
 260     QWebFrame *frame = page()->currentFrame();
 261     frame->addToJavaScriptWindowObject("bv", this);
 262     QString headerScript = "document.body.innerHTML = '" +
 263         naviPrev + naviNext + "<br />" + "' + document.body.innerHTML;";
 264     QString trailerScript = "document.body.innerHTML += '<br /><br />" +
 265         naviPrev + naviNext + "';";
 266
 267     frame->evaluateJavaScript(headerScript);
 268     frame->evaluateJavaScript(trailerScript);
 269 }
 270
 271 QString BookView::tmpPath()
 272 {
 273     return QDir::tempPath() + "/dorian";
 274 }
 275
 276 void BookView::extractIcons()
 277 {
 278     qDebug() << "BookView::extractIcons: Extracting to" << tmpPath();
 279
 280     QFile next(ICON_PREFIX + QString("/next.png"));
 281     QFile prev(ICON_PREFIX + QString("/previous.png"));
 282
 283     QDir().mkpath(tmpPath());
 284     next.copy(tmpPath() + "/next.png");
 285     prev.copy(tmpPath() + "/previous.png");
 286 }
 287
 288 void BookView::removeIcons()
 289 {
 290     QFile(ICON_PREFIX + QString("/next.png")).remove();
 291     QFile(ICON_PREFIX + QString("/previous.png")).remove();
 292     QDir().rmpath(tmpPath());
 293 }