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