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(0), 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             book->open();
  95             goToBookmark(book->lastBookmark());
  96         }
  97         else {
  98             setHtml(tr("No book"));
  99         }
 100     }
 101 }
 102
 103 Book *BookView::book()
 104 {
 105     return mBook;
 106 }
 107
 108 void BookView::goPrevious()
 109 {
 110     loadContent(contentIndex - 1);
 111 }
 112
 113 void BookView::goNext()
 114 {
 115     loadContent(contentIndex + 1);
 116 }
 117
 118 void BookView::setLastBookmark()
 119 {
 120     qDebug() << "BookView::setLastBookmark";
 121     if (mBook) {
 122         int height = page()->mainFrame()->contentsSize().height();
 123         int pos = page()->mainFrame()->scrollPosition().y();
 124         mBook->setLastBookmark(contentIndex, (qreal)pos / (qreal)height);
 125     }
 126 }
 127
 128 void BookView::goToBookmark(const Book::Bookmark &bookmark)
 129 {
 130     if (mBook) {
 131         restore = true;
 132         restorePos = bookmark.pos;
 133         loadContent(bookmark.chapter);
 134     }
 135 }
 136
 137 void BookView::onLoadFinished(bool ok)
 138 {
 139     qDebug() << "BookView::onLoadFinished" << ok;
 140     loadFinished = true;
 141     addNavigationBar();
 142     onSettingsChanged("scheme");
 143     if (restore) {
 144         restore = false;
 145         if (ok && mBook) {
 146             int height = page()->mainFrame()->contentsSize().height();
 147             int scrollPos = (qreal)height * restorePos;
 148             page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 149         }
 150     }
 151 }
 152
 153 void BookView::onSettingsChanged(const QString &key)
 154 {
 155     qDebug() << "BookView::onSettingsChanged" << key;
 156     if (key == "zoom") {
 157         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 158     }
 159     else if (key == "font") {
 160         QString face = Settings::instance()->value("font").toString();
 161         qDebug() << "" << face;
 162         settings()->setFontFamily(QWebSettings::StandardFont, face);
 163     }
 164     else if (key == "scheme") {
 165         QWebFrame *frame = page()->mainFrame();
 166         QString scheme = Settings::instance()->value("scheme").toString();
 167         qDebug() << "" << scheme;
 168         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 169             (scheme != "default")) {
 170             scheme = "default";
 171         }
 172         QFile script(":/styles/" + scheme + ".js");
 173         script.open(QFile::ReadOnly);
 174         QString scriptText = script.readAll();
 175         script.close();
 176         QVariant ret = frame->evaluateJavaScript(scriptText);
 177         qDebug() << "" << script.fileName() << ":" << scriptText;
 178         qDebug() << "" << ret;
 179     }
 180 }
 181
 182 void BookView::paintEvent(QPaintEvent *e)
 183 {
 184     QWebView::paintEvent(e);
 185     if (!mBook) {
 186         return;
 187     }
 188
 189     // Paint bookmarks
 190     if (!loadFinished) {
 191         return;
 192     }
 193     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 194     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 195     QPainter painter(this);
 196     foreach (Book::Bookmark b, mBook->bookmarks()) {
 197         if (b.chapter != contentIndex) {
 198             continue;
 199         }
 200         int height = page()->mainFrame()->contentsSize().height();
 201         int bookmarkPos = (qreal)height * (qreal)b.pos;
 202         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 203     }
 204 }
 205
 206 void BookView::mousePressEvent(QMouseEvent *e)
 207 {
 208     QWebView::mousePressEvent(e);
 209 #ifndef Q_WS_MAEMO_5
 210     QWebFrame *frame = page()->mainFrame();
 211     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 212         e->accept();
 213         return;
 214     }
 215 #endif
 216     e->ignore();
 217 }
 218
 219 void BookView::addBookmark()
 220 {
 221     int y = page()->mainFrame()->scrollPosition().y();
 222     int height = page()->mainFrame()->contentsSize().height();
 223     qDebug() << "BookView::addBookMark" << ((qreal)y / (qreal)height);
 224     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height);
 225     repaint();
 226 }
 227
 228 void BookView::addNavigationBar()
 229 {
 230     QWebFrame *frame = page()->currentFrame();
 231     frame->addToJavaScriptWindowObject("bv", this);
 232
 233     QString naviPrev =
 234             "<a href=\"javascript:bv.goPrevious();\">"
 235             "<img width=\"95\" height=\"95\" style=\"float:left;clear:none;\" "
 236             "src=\"file://"
 237             + tmpPath() +
 238             "/previous.png\" />"
 239             "</a>";
 240     QString naviNext =
 241             "<a href=\"javascript:bv.goNext();\">"
 242             "<img width=\"95\" height=\"95\" style=\"float:right;clear:none;\" "
 243             "src=\"file://"
 244             + tmpPath() +
 245             "/next.png\" />"
 246             "</a>";
 247
 248     if (contentIndex == 0) {
 249         naviPrev = "";
 250     }
 251     if (contentIndex >= mBook->toc.size() - 1) {
 252         naviNext = "";
 253     }
 254
 255     QString headerScript = "document.body.innerHTML = '" +
 256         naviPrev + naviNext + "<br />" + "' + document.body.innerHTML;";
 257     QString trailerScript = "document.body.innerHTML += '<br /><br />" +
 258         naviPrev + naviNext + "';";
 259
 260     frame->evaluateJavaScript(headerScript);
 261     frame->evaluateJavaScript(trailerScript);
 262
 263     // qDebug() << page()->currentFrame()->toHtml();
 264 }
 265
 266 QString BookView::tmpPath()
 267 {
 268     return QDir::tempPath() + "/dorian";
 269 }
 270
 271 void BookView::extractIcons()
 272 {
 273     qDebug() << "BookView::extractIcons: Extracting to" << tmpPath();
 274
 275     QFile next(ICON_PREFIX + QString("/next.png"));
 276     QFile prev(ICON_PREFIX + QString("/previous.png"));
 277
 278     QDir().mkpath(tmpPath());
 279     next.copy(tmpPath() + "/next.png");
 280     prev.copy(tmpPath() + "/previous.png");
 281 }
 282
 283 void BookView::removeIcons()
 284 {
 285     QFile(ICON_PREFIX + QString("/next.png")).remove();
 286     QFile(ICON_PREFIX + QString("/previous.png")).remove();
 287     QDir().rmpath(tmpPath());
 288 }