📄 khtmlview.cpp

📁 khtml在gtk上的移植版本
💻 CPP
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        khtml::RenderCanvas* root = static_cast<khtml::RenderCanvas *>(document->renderer());        if ( !root )            return;                int docw = root->docWidth();        int doch = root->docHeight();            resizeContents(docw, doch);    }}void KHTMLView::applyBodyScrollQuirk(khtml::RenderObject* o, ScrollBarMode& hMode, ScrollBarMode& vMode){    // Handle the overflow:hidden/scroll quirk for the body elements.  WinIE treats    // overflow:hidden and overflow:scroll on <body> as applying to the document's    // scrollbars.  The CSS2.1 draft has even added a sentence, "HTML UAs may apply overflow    // specified on the body or HTML elements to the viewport."  Since WinIE and Mozilla both    // do it, we will do it too for <body> elements.    switch(o->style()->overflow()) {        case OHIDDEN:            hMode = vMode = AlwaysOff;            break;        case OSCROLL:            hMode = vMode = AlwaysOn;            break;        case OAUTO:	    hMode = vMode = Auto;            break;        default:            // Don't set it at all.            ;    }}bool KHTMLView::inLayout() const{    return d->layoutSuppressed;}int KHTMLView::layoutCount() const{    return d->layoutCount;}bool KHTMLView::needsFullRepaint() const{    return d->doFullRepaint;}void KHTMLView::addRepaintInfo(RenderObject* o, const QRect& r){    if (!d->repaintRects) {        d->repaintRects = new QPtrList<RenderObject::RepaintInfo>;        d->repaintRects->setAutoDelete(true);    }        d->repaintRects->append(new RenderObject::RepaintInfo(o, r));}void KHTMLView::layout(){    if (d->layoutSuppressed)        return;        d->layoutSchedulingEnabled=false;    killTimer(d->layoutTimerId);    d->layoutTimerId = 0;    d->allDataReceivedWhenTimerSet = false;    if (!m_part) {        // FIXME: Do we need to set _width here?        // FIXME: Should we set _height here too?        _width = visibleWidth();        return;    }    DOM::DocumentImpl* document = m_part->xmlDocImpl();    if (!document) {        // FIXME: Should we set _height here too?        _width = visibleWidth();        return;    }    khtml::RenderCanvas* root = static_cast<khtml::RenderCanvas*>(document->renderer());    if (!root) {        // FIXME: Do we need to set _width or _height here?        return;    }    ScrollBarMode hMode = d->hmode;    ScrollBarMode vMode = d->vmode;        if (document->isHTMLDocument()) {        NodeImpl *body = static_cast<HTMLDocumentImpl*>(document)->body();        if (body && body->renderer()) {            if (body->id() == ID_FRAMESET) {                body->renderer()->setNeedsLayout(true);                vMode = AlwaysOff;                hMode = AlwaysOff;            }            else if (body->id() == ID_BODY)                applyBodyScrollQuirk(body->renderer(), hMode, vMode); // Only applies to HTML UAs, not to XML/XHTML UAs        }    }#ifdef INSTRUMENT_LAYOUT_SCHEDULING    if (d->firstLayout && !document->ownerElement())        printf("Elapsed time before first layout: %d\n", document->elapsedTime());#endif    d->doFullRepaint = d->firstLayout || root->printingMode();    if (d->repaintRects)        d->repaintRects->clear();#if APPLE_CHANGES    // Now set our scrollbar state for the layout.    ScrollBarMode currentHMode = hScrollBarMode();    ScrollBarMode currentVMode = vScrollBarMode();    if (d->firstLayout || (hMode != currentHMode || vMode != currentVMode)) {        suppressScrollBars(true);        if (d->firstLayout) {            d->firstLayout = false;                        // Set the initial vMode to AlwaysOn if we're auto.            if (vMode == Auto)                QScrollView::setVScrollBarMode(AlwaysOn); // This causes a vertical scrollbar to appear.            // Set the initial hMode to AlwaysOff if we're auto.            if (hMode == Auto)                QScrollView::setHScrollBarMode(AlwaysOff); // This causes a horizontal scrollbar to disappear.        }                if (hMode == vMode)            QScrollView::setScrollBarsMode(hMode);        else {            QScrollView::setHScrollBarMode(hMode);            QScrollView::setVScrollBarMode(vMode);        }        suppressScrollBars(false, true);    }#else    QScrollView::setHScrollBarMode(hMode);    QScrollView::setVScrollBarMode(vMode);#endif    int oldHeight = _height;    int oldWidth = _width;        _height = visibleHeight();    _width = visibleWidth();    if (oldHeight != _height || oldWidth != _width)        d->doFullRepaint = true;        RenderLayer* layer = root->layer();         if (!d->doFullRepaint) {        layer->computeRepaintRects();        root->repaintObjectsBeforeLayout();    }    root->layout();    m_part->invalidateSelection();            //kdDebug( 6000 ) << "TIME: layout() dt=" << qt.elapsed() << endl;       d->layoutSchedulingEnabled=true;    d->layoutSuppressed = false;    if (!root->printingMode())        resizeContents(layer->width(), layer->height());    // Now update the positions of all layers.    layer->updateLayerPositions(d->doFullRepaint);#if APPLE_CHANGES    // We update our widget positions right after doing a layout.    root->updateWidgetPositions();#endif        if (d->repaintRects && !d->repaintRects->isEmpty()) {        // FIXME: Could optimize this and have objects removed from this list        // if they ever do full repaints.        RenderObject::RepaintInfo* r;        QPtrListIterator<RenderObject::RepaintInfo> it(*d->repaintRects);        for ( ; (r = it.current()); ++it)            r->m_object->repaintRectangle(r->m_repaintRect);        d->repaintRects->clear();    }        d->layoutCount++;#if APPLE_CHANGES    if (KWQAccObjectCache::accessibilityEnabled())        root->document()->getOrCreateAccObjectCache()->postNotification(root, "AXLayoutComplete");#endif    if (root->needsLayout()) {        //qDebug("needs layout, delaying repaint");        scheduleRelayout();        return;    }    setStaticBackground(d->useSlowRepaints);}//// Event Handling///////////////////void KHTMLView::viewportMousePressEvent( QMouseEvent *_mouse ){    if(!m_part->xmlDocImpl()) return;    int xm, ym;    viewportToContents(_mouse->x(), _mouse->y(), xm, ym);    //kdDebug( 6000 ) << "\nmousePressEvent: x=" << xm << ", y=" << ym << endl;    d->isDoubleClick = false;    d->mousePressed = true;    DOM::NodeImpl::MouseEvent mev( _mouse->stateAfter(), DOM::NodeImpl::MousePress );    m_part->xmlDocImpl()->prepareMouseEvent( false, xm, ym, &mev );#if !APPLE_CHANGES    if (d->clickCount > 0 &&        QPoint(d->clickX-xm,d->clickY-ym).manhattanLength() <= QApplication::startDragDistance())	d->clickCount++;    else {	d->clickCount = 1;	d->clickX = xm;	d->clickY = ym;    }#else    if (KWQ(m_part)->passSubframeEventToSubframe(mev))        return;    d->clickX = xm;    d->clickY = ym;    d->clickCount = _mouse->clickCount();#endif        bool swallowEvent = dispatchMouseEvent(EventImpl::MOUSEDOWN_EVENT,mev.innerNode.handle(),true,                                           d->clickCount,_mouse,true,DOM::NodeImpl::MousePress);    if (!swallowEvent) {	khtml::MousePressEvent event( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );	QApplication::sendEvent( m_part, &event );#if APPLE_CHANGES         // Many AK widgets run their own event loops and consume events while the mouse is down.        // When they finish, currentEvent is the mouseUp that they exited on.  We need to update        // the khtml state with this mouseUp, which khtml never saw.        // If this event isn't a mouseUp, we assume that the mouseUp will be coming later.  There        // is a hole here if the widget consumes the mouseUp and subsequent events.        if (KWQ(m_part)->lastEventIsMouseUp()) {            d->mousePressed = false;        }#endif        	emit m_part->nodeActivated(mev.innerNode);    }}void KHTMLView::viewportMouseDoubleClickEvent( QMouseEvent *_mouse ){    if(!m_part->xmlDocImpl()) return;    int xm, ym;    viewportToContents(_mouse->x(), _mouse->y(), xm, ym);    //kdDebug( 6000 ) << "mouseDblClickEvent: x=" << xm << ", y=" << ym << endl;    d->isDoubleClick = true;#if APPLE_CHANGES    // We get this instead of a second mouse-up     d->mousePressed = false;#endif    DOM::NodeImpl::MouseEvent mev( _mouse->stateAfter(), DOM::NodeImpl::MouseDblClick );    m_part->xmlDocImpl()->prepareMouseEvent( false, xm, ym, &mev );#if APPLE_CHANGES    if (KWQ(m_part)->passSubframeEventToSubframe(mev))        return;    d->clickCount = _mouse->clickCount();    bool swallowEvent = dispatchMouseEvent(EventImpl::MOUSEUP_EVENT,mev.innerNode.handle(),true,                                           d->clickCount,_mouse,false,DOM::NodeImpl::MouseRelease);        dispatchMouseEvent(EventImpl::CLICK_EVENT,mev.innerNode.handle(),true,			   d->clickCount,_mouse,true,DOM::NodeImpl::MouseRelease);    // Qt delivers a release event AND a double click event.    if (!swallowEvent) {	khtml::MouseReleaseEvent event1( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );	QApplication::sendEvent( m_part, &event1 );	khtml::MouseDoubleClickEvent event2( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );	QApplication::sendEvent( m_part, &event2 );    }#else    // We do the same thing as viewportMousePressEvent() here, since the DOM does not treat    // single and double-click events as separate (only the detail, i.e. number of clicks differs)    // In other words an even detail value for a mouse click event means a double click, and an    // odd detail value means a single click    bool swallowEvent = dispatchMouseEvent(EventImpl::MOUSEDOWN_EVENT,mev.innerNode.handle(),true,                                           d->clickCount,_mouse,true,DOM::NodeImpl::MouseDblClick);    if (!swallowEvent) {	khtml::MouseDoubleClickEvent event( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );	QApplication::sendEvent( m_part, &event );	// ###	//if ( url.length() )	//emit doubleClick( url.string(), _mouse->button() );    }#endif    }static bool isSubmitImage(DOM::NodeImpl *node){    return node        && node->isHTMLElement()        && node->id() == ID_INPUT        && static_cast<HTMLInputElementImpl*>(node)->inputType() == HTMLInputElementImpl::IMAGE;}void KHTMLView::viewportMouseMoveEvent( QMouseEvent * _mouse ){    if(!m_part->xmlDocImpl()) return;    int xm, ym;    viewportToContents(_mouse->x(), _mouse->y(), xm, ym);    // Treat mouse move events while the mouse is pressed as "read-only" in prepareMouseEvent.    // This means that :hover and :active freeze in the state they were in when the mouse    // was pressed, rather than updating for nodes the mouse moves over as you hold the mouse down.    DOM::NodeImpl::MouseEvent mev( _mouse->stateAfter(), DOM::NodeImpl::MouseMove );    m_part->xmlDocImpl()->prepareMouseEvent( d->mousePressed, xm, ym, &mev );#if APPLE_CHANGES    if (KWQ(m_part)->passSubframeEventToSubframe(mev))        return;#endif    bool swallowEvent = dispatchMouseEvent(EventImpl::MOUSEMOVE_EVENT,mev.innerNode.handle(),false,                                           0,_mouse,true,DOM::NodeImpl::MouseMove);#if !APPLE_CHANGES    if (d->clickCount > 0 &&        QPoint(d->clickX-xm,d->clickY-ym).manhattanLength() > QApplication::startDragDistance()) {	d->clickCount = 0;  // moving the mouse outside the threshold invalidates the click    }#endif    // execute the scheduled script. This is to make sure the mouseover events come after the mouseout events    m_part->executeScheduledScript();    khtml::RenderStyle* style = (mev.innerNode.handle() && mev.innerNode.handle()->renderer() &&                                 mev.innerNode.handle()->renderer()->style()) ? mev.innerNode.handle()->renderer()->style() : 0;    QCursor c;    if (style && style->cursor() == CURSOR_AUTO && style->cursorImage()        && !(style->cursorImage()->pixmap().isNull())) {        /* First of all it works: Check out http://www.iam.unibe.ch/~schlpbch/cursor.html         *         * But, I don't know what exactly we have to do here: rescale to 32*32, change to monochrome..         */        //kdDebug( 6000 ) << "using custom cursor" << endl;        const QPixmap p = style->cursorImage()->pixmap();        // ### fix        c = QCursor(p);    }    switch ( style ? style->cursor() : CURSOR_AUTO) {    case CURSOR_AUTO:        if ( d->mousePressed && m_part->hasSelection() )	    // during selection, use an IBeam no matter what we're over	    c = KCursor::ibeamCursor();        else if ( (!mev.url.isNull() || isSubmitImage(mev.innerNode.handle()))                  && m_part->settings()->changeCursor() )            c = m_part->urlCursor();        else if ( !mev.innerNode.isNull()                  && (mev.innerNode.nodeType() == Node::TEXT_NODE                      || mev.innerNode.nodeType() == Node::CDATA_SECTION_NODE                      || (mev.innerNode.isContentEditable())))            c = KCursor::ibeamCursor();        break;    case CURSOR_CROSS:        c = KCursor::crossCursor();        break;    case CURSOR_POINTER:        c = m_part->urlCursor();        break;    case CURSOR_MOVE:        c = KCursor::sizeAllCursor();        break;    case CURSOR_E_RESIZE:#if APPLE_CHANGES        c = KCursor::eastResizeCursor();        break;#endif    case CURSOR_W_RESIZE:#if APPLE_CHANGES        c = KCursor::westResizeCursor();#else        c = KCursor::sizeHorCursor();#endif        break;    case CURSOR_N_RESIZE:#if APPLE_CHANGES        c = KCursor::northResizeCursor();        break;#endif    case CURSOR_S_RESIZE:#if APPLE_CHANGES        c = KCursor::southResizeCursor();#else        c = KCursor::sizeVerCursor();#endif        break;    case CURSOR_NE_RESIZE:#if APPLE_CHANGES        c = KCursor::northEastResizeCursor();        break;#endif    case CURSOR_SW_RESIZE:#if APPLE_CHANGES        c = KCursor::southWestResizeCursor();#else        c = KCursor::sizeBDiagCursor();#endif        break;    case CURSOR_NW_RESIZE:#if APPLE_CHANGES        c = KCursor::northWestResizeCursor();        break;#endif    case CURSOR_SE_RESIZE:#if APPLE_CHANGES        c = KCursor::southEastResizeCursor();#else        c = KCursor::sizeFDiagCursor();#endif        break;    case CURSOR_TEXT:        c = KCursor::ibeamCursor();        break;    case CURSOR_WAIT:        c = KCursor::waitCursor();        break;    case CURSOR_HELP:        c = KCursor::whatsThisCursor();        break;    case CURSOR_DEFAULT:        break;    }    QWidget *vp = viewport();    if ( vp->cursor().handle() != c.handle() ) {        if( c.handle() == KCursor::arrowCursor().handle())            vp->unsetCursor();        else            vp->setCursor( c );    }    d->prevMouseX = xm;    d->prevMouseY = ym;    if (!swallowEvent) {        khtml::MouseMoveEvent event( _mouse, xm, ym, mev.url, mev.target, mev.innerNode );        QApplication::sendEvent( m_part, &event );    }}void KHTMLView::resetCursor(){    viewport()->unsetCursor();}void KHTMLView::invalidateClick(){    d->clickCount = 0;}void KHTMLView::viewportMouseReleaseEvent( QMouseEvent * _mouse ){    if ( !m_part->xmlDocImpl() ) return;    int xm, ym;    viewportToContents(_mouse->x(), _mouse->y(), xm, ym);    d->mousePressed = false;    //kdDebug( 6000 ) << "\nmouseReleaseEvent: x=" << xm << ", y=" << ym << endl;    DOM::NodeImpl::MouseEvent mev( _mouse->stateAfter(), DOM::NodeImpl::MouseRelease );    m_part->xmlDocImpl()->prepareMouseEvent( false, xm, ym, &mev );#if APPLE_CHANGES    if (KWQ(m_part)->passSubframeEventToSubframe(mev))        return;
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