khtmlview.cpp.orig

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

			const QPoint &p, QRect &r, QString &s)
{
    HTMLMapElementImpl* map;
    if (img && img->getDocument()->isHTMLDocument() &&
        (map = static_cast<HTMLDocumentImpl*>(img->getDocument())->getMap(img->imageMap()))) {
        RenderObject::NodeInfo info(true, false);
        RenderObject *rend = img->renderer();
        int ax, ay;
        if (!rend || !rend->absolutePosition(ax, ay))
            return false;
        // we're a client side image map
        bool inside = map->mapMouseEvent(p.x() - ax + scrollOfs.x(),
                p.y() - ay + scrollOfs.y(), rend->contentWidth(),
                rend->contentHeight(), info);
        if (inside && info.URLElement()) {
            HTMLAreaElementImpl *area = static_cast<HTMLAreaElementImpl *>(info.URLElement());
            Q_ASSERT(area->id() == ID_AREA);
            s = area->getAttribute(ATTR_TITLE).string();
            QRegion reg = area->cachedRegion();
            if (!s.isEmpty() && !reg.isEmpty()) {
                r = reg.boundingRect();
                r.moveBy(ax, ay);
                return true;
            }
        }
    }
    return false;
}

void KHTMLToolTip::maybeTip(const QPoint& p)
{
    DOM::NodeImpl *node = m_viewprivate->underMouseNonShared;
    QRect region;
    while ( node ) {
        if ( node->isElementNode() ) {
            DOM::ElementImpl *e = static_cast<DOM::ElementImpl*>( node );
            QRect r;
            QString s;
            bool found = false;
            // for images, check if it is part of a client-side image map,
            // and query the <area>s' title attributes, too
            if (e->id() == ID_IMG && !e->getAttribute( ATTR_USEMAP ).isEmpty()) {
                found = findImageMapRect(static_cast<HTMLImageElementImpl *>(e),
                    		m_view->viewportToContents(QPoint(0, 0)), p, r, s);
            }
            if (!found) {
                s = e->getAttribute( ATTR_TITLE ).string();
                r = node->getRect();
            }
            region |= QRect( m_view->contentsToViewport( r.topLeft() ), r.size() );
            if ( !s.isEmpty() ) {
                tip( region, QStyleSheet::convertFromPlainText( s, QStyleSheetItem::WhiteSpaceNormal ) );
                break;
            }
        }
        node = node->parentNode();
    }
}
#endif

KHTMLView::KHTMLView( KHTMLPart *part, QWidget *parent, const char *name)
    : QScrollView( parent, name, WResizeNoErase | WRepaintNoErase )
{
    m_medium = "screen";

    m_part = part;
    d = new KHTMLViewPrivate;
    QScrollView::setVScrollBarMode(d->vmode);
    QScrollView::setHScrollBarMode(d->hmode);
    connect(kapp, SIGNAL(kdisplayPaletteChanged()), this, SLOT(slotPaletteChanged()));
    connect(this, SIGNAL(contentsMoving(int, int)), this, SLOT(slotScrollBarMoved()));

    // initialize QScrollView
    enableClipper(true);
    // hack to get unclipped painting on the viewport.
    static_cast<KHTMLView *>(static_cast<QWidget *>(viewport()))->setWFlags(WPaintUnclipped);

    setResizePolicy(Manual);
    viewport()->setMouseTracking(true);
    viewport()->setBackgroundMode(NoBackground);

    KImageIO::registerFormats();

#ifndef QT_NO_TOOLTIP
    d->tooltip = new KHTMLToolTip( this, d );
#endif

#ifndef KHTML_NO_TYPE_AHEAD_FIND
    connect(&d->timer, SIGNAL(timeout()), this, SLOT(findTimeout()));
#endif // KHTML_NO_TYPE_AHEAD_FIND

    init();

    viewport()->show();
}

KHTMLView::~KHTMLView()
{
    closeChildDialogs();
    if (m_part)
    {
        //WABA: Is this Ok? Do I need to deref it as well?
        //Does this need to be done somewhere else?
        DOM::DocumentImpl *doc = m_part->xmlDocImpl();
        if (doc)
            doc->detach();
    }
    delete d; d = 0;
}

void KHTMLView::init()
{
    if(!d->paintBuffer) d->paintBuffer = new QPixmap(PAINT_BUFFER_HEIGHT, PAINT_BUFFER_HEIGHT);
    if(!d->vertPaintBuffer)
        d->vertPaintBuffer = new QPixmap(10, PAINT_BUFFER_HEIGHT);
    if(!d->tp) d->tp = new QPainter();

    setFocusPolicy(QWidget::StrongFocus);
    viewport()->setFocusProxy(this);

    _marginWidth = -1; // undefined
    _marginHeight = -1;
    _width = 0;
    _height = 0;

    installEventFilter(this);

    setAcceptDrops(true);
    QSize s = viewportSize(4095, 4095);
    resizeContents(s.width(), s.height());
}

void KHTMLView::clear()
{
    // work around QScrollview's unbelievable bugginess
    setStaticBackground(true);
#ifndef KHTML_NO_CARET
    if (!m_part->isCaretMode() && !m_part->isEditable()) caretOff();
#endif

#ifndef KHTML_NO_TYPE_AHEAD_FIND
    if( d->typeAheadActivated )
        findTimeout();
#endif
    if (d->accessKeysEnabled && d->accessKeysActivated)
        accessKeysTimeout();
    viewport()->unsetCursor();
    if ( d->cursor_icon_widget )
        d->cursor_icon_widget->hide();
    d->reset();
    killTimers();
    emit cleared();

    QScrollView::setHScrollBarMode(d->hmode);
    QScrollView::setVScrollBarMode(d->vmode);
    verticalScrollBar()->setEnabled( false );
    horizontalScrollBar()->setEnabled( false );
}

void KHTMLView::hideEvent(QHideEvent* e)
{
    QScrollView::hideEvent(e);
}

void KHTMLView::showEvent(QShowEvent* e)
{
    QScrollView::showEvent(e);
}

void KHTMLView::resizeEvent (QResizeEvent* e)
{
    int dw = e->oldSize().width() - e->size().width();
    int dh = e->oldSize().height() - e->size().height();

    // if we are shrinking the view, don't allow the content to overflow
    // before the layout occurs - we don't know if we need scrollbars yet
    dw = dw>0 ? kMax(0, contentsWidth()-dw) : contentsWidth();
    dh = dh>0 ? kMax(0, contentsHeight()-dh) : contentsHeight();

    resizeContents(dw, dh);

    QScrollView::resizeEvent(e);

    if ( m_part && m_part->xmlDocImpl() )
        m_part->xmlDocImpl()->dispatchWindowEvent( EventImpl::RESIZE_EVENT, false, false );
}

void KHTMLView::viewportResizeEvent (QResizeEvent* e)
{
    QScrollView::viewportResizeEvent(e);

    //int w = visibleWidth();
    //int h = visibleHeight();

    if (d->layoutSchedulingEnabled)
        layout();
#ifndef KHTML_NO_CARET
    else {
        hideCaret();
        recalcAndStoreCaretPos();
	showCaret();
    }/*end if*/
#endif

    KApplication::sendPostedEvents(viewport(), QEvent::Paint);
}

// this is to get rid of a compiler virtual overload mismatch warning. do not remove
void KHTMLView::drawContents( QPainter*)
{
}

void KHTMLView::drawContents( QPainter *p, int ex, int ey, int ew, int eh )
{
#ifdef DEBUG_PIXEL

    if ( d->timer.elapsed() > 5000 ) {
        qDebug( "drawed %d pixels in %d repaints the last %d milliseconds",
                d->pixelbooth, d->repaintbooth,  d->timer.elapsed() );
        d->timer.restart();
        d->pixelbooth = 0;
        d->repaintbooth = 0;
    }
    d->pixelbooth += ew*eh;
    d->repaintbooth++;
#endif

    //kdDebug( 6000 ) << "drawContents this="<< this <<" x=" << ex << ",y=" << ey << ",w=" << ew << ",h=" << eh << endl;
    if(!m_part || !m_part->xmlDocImpl() || !m_part->xmlDocImpl()->renderer()) {
        p->fillRect(ex, ey, ew, eh, palette().active().brush(QColorGroup::Base));
        return;
    } else if ( d->complete && static_cast<RenderCanvas*>(m_part->xmlDocImpl()->renderer())->needsLayout() ) {
        // an external update request happens while we have a layout scheduled
        unscheduleRelayout();
        layout();
    }

    if (d->painting) {
        kdDebug( 6000 ) << "WARNING: drawContents reentered! " << endl;
        return;
    }
    d->painting = true;

    QPoint pt = contentsToViewport(QPoint(ex, ey));
    QRegion cr = QRect(pt.x(), pt.y(), ew, eh);

    //kdDebug(6000) << "clip rect: " << QRect(pt.x(), pt.y(), ew, eh) << endl;
    for (QPtrDictIterator<QWidget> it(d->visibleWidgets); it.current(); ++it) {
	QWidget *w = it.current();
	RenderWidget* rw = static_cast<RenderWidget*>( it.currentKey() );
        if (strcmp(w->name(), "__khtml")) {
            int x, y;
            rw->absolutePosition(x, y);
            contentsToViewport(x, y, x, y);
            cr -= QRect(x, y, rw->width(), rw->height());
        }
    }

#if 0
    // this is commonly the case with framesets. we still do
    // want to paint them, otherwise the widgets don't get placed.
    if (cr.isEmpty()) {
        d->painting = false;
	return;
    }
#endif

#ifndef DEBUG_NO_PAINT_BUFFER
    p->setClipRegion(cr);

    if (eh > PAINT_BUFFER_HEIGHT && ew <= 10) {
        if ( d->vertPaintBuffer->height() < visibleHeight() )
            d->vertPaintBuffer->resize(10, visibleHeight());
        d->tp->begin(d->vertPaintBuffer);
        d->tp->translate(-ex, -ey);
        d->tp->fillRect(ex, ey, ew, eh, palette().active().brush(QColorGroup::Base));
        m_part->xmlDocImpl()->renderer()->layer()->paint(d->tp, QRect(ex, ey, ew, eh));
        d->tp->end();
	p->drawPixmap(ex, ey, *d->vertPaintBuffer, 0, 0, ew, eh);
    }
    else {
        if ( d->paintBuffer->width() < visibleWidth() )
            d->paintBuffer->resize(visibleWidth(),PAINT_BUFFER_HEIGHT);

        int py=0;
        while (py < eh) {
            int ph = eh-py < PAINT_BUFFER_HEIGHT ? eh-py : PAINT_BUFFER_HEIGHT;
            d->tp->begin(d->paintBuffer);
            d->tp->translate(-ex, -ey-py);
            d->tp->fillRect(ex, ey+py, ew, ph, palette().active().brush(QColorGroup::Base));
            m_part->xmlDocImpl()->renderer()->layer()->paint(d->tp, QRect(ex, ey+py, ew, ph));
            d->tp->end();

	    p->drawPixmap(ex, ey+py, *d->paintBuffer, 0, 0, ew, ph);
            py += PAINT_BUFFER_HEIGHT;
        }
    }
#else // !DEBUG_NO_PAINT_BUFFER
static int cnt=0;
	ex = contentsX(); ey = contentsY();
	ew = visibleWidth(); eh = visibleHeight();
	QRect pr(ex,ey,ew,eh);
	kdDebug() << "[" << ++cnt << "]" << " clip region: " << pr << endl;
//	p->setClipRegion(QRect(0,0,ew,eh));
//        p->translate(-ex, -ey);
        p->fillRect(ex, ey, ew, eh, palette().active().brush(QColorGroup::Base));
        m_part->xmlDocImpl()->renderer()->layer()->paint(p, pr);
#endif // DEBUG_NO_PAINT_BUFFER

#ifndef KHTML_NO_CARET
    if (d->m_caretViewContext && d->m_caretViewContext->visible) {
        QRect pos(d->m_caretViewContext->x, d->m_caretViewContext->y,
		d->m_caretViewContext->width, d->m_caretViewContext->height);
        if (pos.intersects(QRect(ex, ey, ew, eh))) {
            p->setRasterOp(XorROP);
	    p->setPen(white);
	    if (pos.width() == 1)
              p->drawLine(pos.topLeft(), pos.bottomRight());
	    else {
	      p->fillRect(pos, white);
	    }/*end if*/
	}/*end if*/
    }/*end if*/
#endif // KHTML_NO_CARET

//    p->setPen(QPen(magenta,0,DashDotDotLine));
//    p->drawRect(dbg_paint_rect);

    khtml::DrawContentsEvent event( p, ex, ey, ew, eh );
    QApplication::sendEvent( m_part, &event );

    d->painting = false;
}

void KHTMLView::setMarginWidth(int w)
{
    // make it update the rendering area when set
    _marginWidth = w;
}

void KHTMLView::setMarginHeight(int h)
{
    // make it update the rendering area when set
    _marginHeight = h;
}

void KHTMLView::layout()
{
    if( m_part && m_part->xmlDocImpl() ) {
        DOM::DocumentImpl *document = m_part->xmlDocImpl();

        khtml::RenderCanvas* root = static_cast<khtml::RenderCanvas *>(document->renderer());
        if ( !root ) return;

        d->layoutSchedulingEnabled=false;

        if (document->isHTMLDocument()) {
             NodeImpl *body = static_cast<HTMLDocumentImpl*>(document)->body();
             if(body && body->renderer() && body->id() == ID_FRAMESET) {
                 QScrollView::setVScrollBarMode(AlwaysOff);
                 QScrollView::setHScrollBarMode(AlwaysOff);
                 body->renderer()->setNeedsLayout(true);
//                  if (d->tooltip) {
//                      delete d->tooltip;
//                      d->tooltip = 0;
//                  }
             }
             else if (!d->tooltip)
                 d->tooltip = new KHTMLToolTip( this, d );
        }
        d->needsFullRepaint = d->firstRelayout;
        if (_height !=  visibleHeight() || _width != visibleWidth()) {;
            d->needsFullRepaint = true;
            _height = visibleHeight();
            _width = visibleWidth();
        }
        //QTime qt;
        //qt.start();
        root->layout();

        emit finishedLayout();
        if (d->firstRelayout) {
            // make sure firstRelayout is set to false now in case this layout
            // wasn't scheduled
            d->firstRelayout = false;
            verticalScrollBar()->setEnabled( true );
            horizontalScrollBar()->setEnabled( true );
        }
#if 0
    ElementImpl *listitem = m_part->xmlDocImpl()->getElementById("__test_element__");
    if (listitem) kdDebug(6000) << "after layout, before repaint" << endl;
    if (listitem) dumpLineBoxes(static_cast<RenderFlow *>(listitem->renderer()));
#endif
#ifndef KHTML_NO_CARET
        hideCaret();
        if ((m_part->isCaretMode() || m_part->isEditable())
        	&& !d->complete && d->m_caretViewContext
                && !d->m_caretViewContext->caretMoved) {
            initCaret();
        } else {
	    recalcAndStoreCaretPos();
	    showCaret();
        }/*end if*/
#endif
        if (d->accessKeysEnabled && d->accessKeysActivated) {
            emit hideAccessKeys();
            displayAccessKeys();
        }
        //kdDebug( 6000 ) << "TIME: layout() dt=" << qt.elapsed() << endl;
    }
    else