/*

    Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>

                  2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Library General Public

    License as published by the Free Software Foundation; either

    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License

    along with this library; see the file COPYING.LIB.  If not, write to

    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    Boston, MA 02110-1301, USA.

*/

#include "config.h"

#if ENABLE(SVG)

#include "SVGDocument.h"

#include "EventNames.h"

#include "ExceptionCode.h"

#include "FrameView.h"

#include "RenderView.h"

#include "SVGElement.h"

#include "SVGNames.h"

#include "SVGSVGElement.h"

#include "SVGViewSpec.h"

#include "SVGZoomEvent.h"

#include "SVGZoomAndPan.h"

namespace WebCore {

SVGDocument::SVGDocument(Frame* frame, const KURL& url)

    : Document(frame, url, false, false)

{

}

SVGDocument::~SVGDocument()

{

}

SVGSVGElement* SVGDocument::rootElement() const

{

    Element* elem = documentElement();

    if (elem && elem->hasTagName(SVGNames::svgTag))

        return static_cast<SVGSVGElement*>(elem);

    return 0;

}

void SVGDocument::dispatchZoomEvent(float prevScale, float newScale)

{

    ExceptionCode ec = 0;

    RefPtr<SVGZoomEvent> event = static_pointer_cast<SVGZoomEvent>(createEvent("SVGZoomEvents", ec));

    event->initEvent(eventNames().zoomEvent, true, false);

    event->setPreviousScale(prevScale);

    event->setNewScale(newScale);

    rootElement()->dispatchEvent(event.release(), ec);

}

void SVGDocument::dispatchScrollEvent()

{

    ExceptionCode ec = 0;

    RefPtr<Event> event = createEvent("SVGEvents", ec);

    event->initEvent(eventNames().scrollEvent, true, false);

    rootElement()->dispatchEvent(event.release(), ec);

}

bool SVGDocument::zoomAndPanEnabled() const

{

    if (rootElement()) {

        if (rootElement()->useCurrentView()) {

            if (rootElement()->currentView())

                return rootElement()->currentView()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;

        } else

            return rootElement()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;

    }

    return false;

}

void SVGDocument::startPan(const FloatPoint& start)

{

    if (rootElement())

        m_translate = FloatPoint(start.x() - rootElement()->currentTranslate().x(), rootElement()->currentTranslate().y() + start.y());

}

void SVGDocument::updatePan(const FloatPoint& pos) const

{

    if (rootElement()) {

        rootElement()->setCurrentTranslate(FloatPoint(pos.x() - m_translate.x(), m_translate.y() - pos.y()));

        if (renderer())

            renderer()->repaint();

    }

}

bool SVGDocument::childShouldCreateRenderer(Node* node) const

{

    if (node->hasTagName(SVGNames::svgTag))

        return static_cast<SVGSVGElement*>(node)->isValid();

    return true;

}

}

// vim:ts=4:noet

#endif // ENABLE(SVG)