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(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     emit chapterLoaded(contentIndex);
 144     if (restore) {
 145         restore = false;
 146         if (ok && mBook) {
 147             int height = page()->mainFrame()->contentsSize().height();
 148             int scrollPos = (qreal)height * restorePos;
 149             page()->mainFrame()->setScrollPosition(QPoint(0, scrollPos));
 150         }
 151     }
 152 }
 153
 154 void BookView::onSettingsChanged(const QString &key)
 155 {
 156     qDebug() << "BookView::onSettingsChanged" << key;
 157     if (key == "zoom") {
 158         setZoomFactor(Settings::instance()->value(key).toFloat() / 100.);
 159     }
 160     else if (key == "font") {
 161         QString face = Settings::instance()->value("font").toString();
 162         qDebug() << "" << face;
 163         settings()->setFontFamily(QWebSettings::StandardFont, face);
 164     }
 165     else if (key == "scheme") {
 166         QWebFrame *frame = page()->mainFrame();
 167         QString scheme = Settings::instance()->value("scheme").toString();
 168         qDebug() << "" << scheme;
 169         if ((scheme != "day") && (scheme != "night") && (scheme != "sand") &&
 170             (scheme != "default")) {
 171             scheme = "default";
 172         }
 173         QFile script(":/styles/" + scheme + ".js");
 174         script.open(QFile::ReadOnly);
 175         QString scriptText = script.readAll();
 176         script.close();
 177         QVariant ret = frame->evaluateJavaScript(scriptText);
 178         qDebug() << "" << script.fileName() << ":" << scriptText;
 179         qDebug() << "" << ret;
 180     }
 181 }
 182
 183 void BookView::paintEvent(QPaintEvent *e)
 184 {
 185     QWebView::paintEvent(e);
 186     if (!mBook) {
 187         return;
 188     }
 189
 190     // Paint bookmarks
 191     if (!loadFinished) {
 192         return;
 193     }
 194     QPoint scrollPos = page()->mainFrame()->scrollPosition();
 195     QPixmap bookmarkPixmap = QPixmap::fromImage(bookmarkImage);
 196     QPainter painter(this);
 197     foreach (Book::Bookmark b, mBook->bookmarks()) {
 198         if (b.chapter != contentIndex) {
 199             continue;
 200         }
 201         int height = page()->mainFrame()->contentsSize().height();
 202         int bookmarkPos = (qreal)height * (qreal)b.pos;
 203         painter.drawPixmap(2, bookmarkPos - scrollPos.y(), bookmarkPixmap);
 204     }
 205 }
 206
 207 void BookView::mousePressEvent(QMouseEvent *e)
 208 {
 209     QWebView::mousePressEvent(e);
 210 #ifndef Q_WS_MAEMO_5
 211     QWebFrame *frame = page()->mainFrame();
 212     if (frame->scrollBarGeometry(Qt::Vertical).contains(e->pos())) {
 213         e->accept();
 214         return;
 215     }
 216 #endif
 217     e->ignore();
 218 }
 219
 220 void BookView::addBookmark()
 221 {
 222     int y = page()->mainFrame()->scrollPosition().y();
 223     int height = page()->mainFrame()->contentsSize().height();
 224     qDebug() << "BookView::addBookMark" << ((qreal)y / (qreal)height);
 225     mBook->addBookmark(contentIndex, (qreal)y / (qreal)height);
 226     repaint();
 227 }
 228
 229 void BookView::addNavigationBar()
 230 {
 231     if (!mBook) {
 232         return;
 233     }
 234
 235     QString naviPrev =
 236             "<a href=\"javascript:bv.goPrevious();\">"
 237             "<img width=\"95\" height=\"95\" style=\"float:left;clear:none;\" "
 238             "src=\"file://"
 239             + tmpPath() +
 240             "/previous.png\" />"
 241             "</a>";
 242     QString naviNext =
 243             "<a href=\"javascript:bv.goNext();\">"
 244             "<img width=\"95\" height=\"95\" style=\"float:right;clear:none;\" "
 245             "src=\"file://"
 246             + tmpPath() +
 247             "/next.png\" />"
 248             "</a>";
 249     if (contentIndex == 0) {
 250         naviPrev = "";
 251     }
 252     if (contentIndex >= mBook->toc.size() - 1) {
 253         naviNext = "";
 254     }
 255
 256     QWebFrame *frame = page()->currentFrame();
 257     frame->addToJavaScriptWindowObject("bv", this);
 258     QString headerScript = "document.body.innerHTML = '" +
 259         naviPrev + naviNext + "<br />" + "' + document.body.innerHTML;";
 260     QString trailerScript = "document.body.innerHTML += '<br /><br />" +
 261         naviPrev + naviNext + "';";
 262
 263     frame->evaluateJavaScript(headerScript);
 264     frame->evaluateJavaScript(trailerScript);
 265 }
 266
 267 QString BookView::tmpPath()
 268 {
 269     return QDir::tempPath() + "/dorian";
 270 }
 271
 272 void BookView::extractIcons()
 273 {
 274     qDebug() << "BookView::extractIcons: Extracting to" << tmpPath();
 275
 276     QFile next(ICON_PREFIX + QString("/next.png"));
 277     QFile prev(ICON_PREFIX + QString("/previous.png"));
 278
 279     QDir().mkpath(tmpPath());
 280     next.copy(tmpPath() + "/next.png");
 281     prev.copy(tmpPath() + "/previous.png");
 282 }
 283
 284 void BookView::removeIcons()
 285 {
 286     QFile(ICON_PREFIX + QString("/next.png")).remove();
 287     QFile(ICON_PREFIX + QString("/previous.png")).remove();
 288     QDir().rmpath(tmpPath());
 289 }