qwebview.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*!
    \property QWebView::zoomFactor
    \since 4.5
    \brief the zoom factor for the view
*/

void QWebView::setZoomFactor(qreal factor)
{
    page()->mainFrame()->setZoomFactor(factor);
}

qreal QWebView::zoomFactor() const
{
    return page()->mainFrame()->zoomFactor();
}

/*!
  \property QWebView::textSizeMultiplier
  \brief the scaling factor for all text in the frame
  \obsolete

  Use setZoomFactor instead, in combination with the
  ZoomTextOnly attribute in QWebSettings.

  \note Setting this property also enables the
  ZoomTextOnly attribute in QWebSettings.

  By default, this property contains a value of 1.0.
*/

/*!
    Sets the value of the multiplier used to scale the text in a Web page to
    the \a factor specified.
*/
void QWebView::setTextSizeMultiplier(qreal factor)
{
    page()->mainFrame()->setTextSizeMultiplier(factor);
}

/*!
    Returns the value of the multiplier used to scale the text in a Web page.
*/
qreal QWebView::textSizeMultiplier() const
{
    return page()->mainFrame()->textSizeMultiplier();
}

/*!
    Finds the next occurrence of the string, \a subString, in the page, using
    the given \a options. Returns true of \a subString was found and selects
    the match visually; otherwise returns false.

    \sa selectedText(), selectionChanged()
*/
bool QWebView::findText(const QString &subString, QWebPage::FindFlags options)
{
    if (d->page)
        return d->page->findText(subString, options);
    return false;
}

/*! \reimp
*/
bool QWebView::event(QEvent *e)
{
    if (d->page) {
#ifndef QT_NO_CONTEXTMENU
        if (e->type() == QEvent::ContextMenu) {
            if (!isEnabled())
                return false;
            QContextMenuEvent *event = static_cast<QContextMenuEvent *>(e);
            if (d->page->swallowContextMenuEvent(event)) {
                e->accept();
                return true;
            }
            d->page->updatePositionDependentActions(event->pos());
        } else
#endif // QT_NO_CONTEXTMENU
        if (e->type() == QEvent::ShortcutOverride) {
            d->page->event(e);
#ifndef QT_NO_CURSOR
        } else if (e->type() == static_cast<QEvent::Type>(WebCore::SetCursorEvent::EventType)) {
            d->setCursor(static_cast<WebCore::SetCursorEvent*>(e)->cursor());
#if QT_VERSION >= 0x040400
        } else if (e->type() == QEvent::CursorChange) {
            // Okay we might use the WebCore Cursor now.
            d->usesWebCoreCursor = d->cursorSetByWebCore;
            d->cursorSetByWebCore = false;

            // Go back to the WebCore Cursor. QWidget::unsetCursor is appromixated with this
            if (!d->usesWebCoreCursor && cursor().shape() == Qt::ArrowCursor) {
                d->usesWebCoreCursor = true;
                d->setCursor(d->webCoreCursor);
            }
#endif
#endif
        } else if (e->type() == QEvent::Leave) {
            d->page->event(e);
        }
    }

    return QWidget::event(e);
}

/*!
    Prints the main frame to the given \a printer.

    \sa QWebFrame::print(), QPrintPreviewDialog
*/
void QWebView::print(QPrinter *printer) const
{
#ifndef QT_NO_PRINTER
    page()->mainFrame()->print(printer);
#endif
}

/*!
    Convenience slot that stops loading the document.

    It is equivalent to

    \snippet doc/src/snippets/code/src_3rdparty_webkit_WebKit_qt_Api_qwebview.cpp 3

    \sa reload(), pageAction(), loadFinished()
*/
void QWebView::stop()
{
    if (d->page)
        d->page->triggerAction(QWebPage::Stop);
}

/*!
    Convenience slot that loads the previous document in the list of documents
    built by navigating links. Does nothing if there is no previous document.

    It is equivalent to

    \snippet doc/src/snippets/code/src_3rdparty_webkit_WebKit_qt_Api_qwebview.cpp 4

    \sa forward(), pageAction()
*/
void QWebView::back()
{
    if (d->page)
        d->page->triggerAction(QWebPage::Back);
}

/*!
    Convenience slot that loads the next document in the list of documents
    built by navigating links. Does nothing if there is no next document.

    It is equivalent to

    \snippet doc/src/snippets/code/src_3rdparty_webkit_WebKit_qt_Api_qwebview.cpp 5

    \sa back(), pageAction()
*/
void QWebView::forward()
{
    if (d->page)
        d->page->triggerAction(QWebPage::Forward);
}

/*!
    Reloads the current document.

    \sa stop(), pageAction(), loadStarted()
*/
void QWebView::reload()
{
    if (d->page)
        d->page->triggerAction(QWebPage::Reload);
}

/*! \reimp
*/
void QWebView::resizeEvent(QResizeEvent *e)
{
    if (d->page)
        d->page->setViewportSize(e->size());
}

/*! \reimp
*/
void QWebView::paintEvent(QPaintEvent *ev)
{
    if (!d->page)
        return;
#ifdef QWEBKIT_TIME_RENDERING
    QTime time;
    time.start();
#endif

    QWebFrame *frame = d->page->mainFrame();
    QPainter p(this);

    frame->render(&p, ev->region());

#ifdef    QWEBKIT_TIME_RENDERING
    int elapsed = time.elapsed();
    qDebug()<<"paint event on "<<ev->region()<<", took to render =  "<<elapsed;
#endif
}

/*!
    This function is called whenever WebKit wants to create a new window of the given \a type, for example as a result of
    a JavaScript request to open a document in a new window.

    \sa QWebPage::createWindow()
*/
QWebView *QWebView::createWindow(QWebPage::WebWindowType type)
{
    Q_UNUSED(type)
    return 0;
}

/*! \reimp
*/
void QWebView::mouseMoveEvent(QMouseEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}

/*! \reimp
*/
void QWebView::mousePressEvent(QMouseEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}

/*! \reimp
*/
void QWebView::mouseDoubleClickEvent(QMouseEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}

/*! \reimp
*/
void QWebView::mouseReleaseEvent(QMouseEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}

#ifndef QT_NO_CONTEXTMENU
/*! \reimp
*/
void QWebView::contextMenuEvent(QContextMenuEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}
#endif // QT_NO_CONTEXTMENU

#ifndef QT_NO_WHEELEVENT
/*! \reimp
*/
void QWebView::wheelEvent(QWheelEvent* ev)
{
    if (d->page) {
        const bool accepted = ev->isAccepted();
        d->page->event(ev);
        ev->setAccepted(accepted);
    }
}
#endif // QT_NO_WHEELEVENT

/*! \reimp
*/
void QWebView::keyPressEvent(QKeyEvent* ev)
{
    if (d->page)
        d->page->event(ev);
    if (!ev->isAccepted())
        QWidget::keyPressEvent(ev);
}

/*! \reimp
*/
void QWebView::keyReleaseEvent(QKeyEvent* ev)
{
    if (d->page)
        d->page->event(ev);
    if (!ev->isAccepted())
        QWidget::keyReleaseEvent(ev);
}

/*! \reimp
*/
void QWebView::focusInEvent(QFocusEvent* ev)
{
    if (d->page)
        d->page->event(ev);
    else
        QWidget::focusInEvent(ev);
}

/*! \reimp
*/
void QWebView::focusOutEvent(QFocusEvent* ev)
{
    if (d->page)
        d->page->event(ev);
    else
        QWidget::focusOutEvent(ev);
}

/*! \reimp
*/
void QWebView::dragEnterEvent(QDragEnterEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    if (d->page)
        d->page->event(ev);
#endif
}

/*! \reimp
*/
void QWebView::dragLeaveEvent(QDragLeaveEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    if (d->page)
        d->page->event(ev);
#endif
}

/*! \reimp
*/
void QWebView::dragMoveEvent(QDragMoveEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    if (d->page)
        d->page->event(ev);
#endif
}

/*! \reimp
*/
void QWebView::dropEvent(QDropEvent* ev)
{
#ifndef QT_NO_DRAGANDDROP
    if (d->page)
        d->page->event(ev);
#endif
}

/*! \reimp
*/
bool QWebView::focusNextPrevChild(bool next)
{
    if (d->page && d->page->focusNextPrevChild(next))
        return true;
    return QWidget::focusNextPrevChild(next);
}

/*!\reimp
*/
QVariant QWebView::inputMethodQuery(Qt::InputMethodQuery property) const
{
    if (d->page)
        return d->page->inputMethodQuery(property);
    return QVariant();
}

/*!\reimp
*/
void QWebView::inputMethodEvent(QInputMethodEvent *e)
{
    if (d->page)
       d->page->event(e);
}

/*!\reimp
*/
void QWebView::changeEvent(QEvent *e)
{
    if (d->page && e->type() == QEvent::PaletteChange) {
        d->page->setPalette(palette());
    }
    QWidget::changeEvent(e);
}

/*!
    \fn void QWebView::titleChanged(const QString &title)

    This signal is emitted whenever the \a title of the main frame changes.

    \sa title()
*/

/*!
    \fn void QWebView::urlChanged(const QUrl &url)

    This signal is emitted when the \a url of the view changes.

    \sa url(), load()
*/

/*!
    \fn void QWebView::statusBarMessage(const QString& text)

    This signal is emitted when the statusbar \a text is changed by the page.
*/

/*!
    \fn void QWebView::iconChanged()

    This signal is emitted whenever the icon of the page is loaded or changes.

    \sa icon()
*/

/*!
    \fn void QWebView::loadStarted()

    This signal is emitted when a new load of the page is started.

    \sa loadProgress(), loadFinished()
*/

/*!
    \fn void QWebView::loadFinished(bool ok)

    This signal is emitted when a load of the page is finished.
    \a ok will indicate whether the load was successful or any error occurred.

    \sa loadStarted()
*/

/*!
    \fn void QWebView::selectionChanged()

    This signal is emitted whenever the selection changes.

    \sa selectedText()
*/

/*!
    \fn void QWebView::loadProgress(int progress)

    This signal is emitted every time an element in the web page
    completes loading and the overall loading progress advances.

    This signal tracks the progress of all child frames.

    The current value is provided by \a progress and scales from 0 to 100,
    which is the default range of QProgressBar.

    \sa loadStarted(), loadFinished()
*/

/*!
    \fn void QWebView::linkClicked(const QUrl &url)

    This signal is emitted whenever the user clicks on a link and the page's linkDelegationPolicy
    property is set to delegate the link handling for the specified \a url.

    \sa QWebPage::linkDelegationPolicy()
*/