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      1 /*
      2  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #include "config.h"
     22 #if ENABLE(SVG)
     23 #include "SVGDocument.h"
     24 
     25 #include "EventNames.h"
     26 #include "ExceptionCode.h"
     27 #include "FrameView.h"
     28 #include "RenderView.h"
     29 #include "SVGElement.h"
     30 #include "SVGNames.h"
     31 #include "SVGSVGElement.h"
     32 #include "SVGViewSpec.h"
     33 #include "SVGZoomAndPan.h"
     34 #include "SVGZoomEvent.h"
     35 
     36 namespace WebCore {
     37 
     38 SVGDocument::SVGDocument(Frame* frame, const KURL& url)
     39     : Document(frame, url, false, false)
     40 {
     41 }
     42 
     43 SVGSVGElement* SVGDocument::rootElement() const
     44 {
     45     Element* elem = documentElement();
     46     if (elem && elem->hasTagName(SVGNames::svgTag))
     47         return static_cast<SVGSVGElement*>(elem);
     48 
     49     return 0;
     50 }
     51 
     52 void SVGDocument::dispatchZoomEvent(float prevScale, float newScale)
     53 {
     54     ExceptionCode ec = 0;
     55     RefPtr<SVGZoomEvent> event = static_pointer_cast<SVGZoomEvent>(createEvent("SVGZoomEvents", ec));
     56     event->initEvent(eventNames().zoomEvent, true, false);
     57     event->setPreviousScale(prevScale);
     58     event->setNewScale(newScale);
     59     rootElement()->dispatchEvent(event.release(), ec);
     60 }
     61 
     62 void SVGDocument::dispatchScrollEvent()
     63 {
     64     ExceptionCode ec = 0;
     65     RefPtr<Event> event = createEvent("SVGEvents", ec);
     66     event->initEvent(eventNames().scrollEvent, true, false);
     67     rootElement()->dispatchEvent(event.release(), ec);
     68 }
     69 
     70 bool SVGDocument::zoomAndPanEnabled() const
     71 {
     72     if (rootElement()) {
     73         if (rootElement()->useCurrentView()) {
     74             if (rootElement()->currentView())
     75                 return rootElement()->currentView()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;
     76         } else
     77             return rootElement()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;
     78     }
     79 
     80     return false;
     81 }
     82 
     83 void SVGDocument::startPan(const FloatPoint& start)
     84 {
     85     if (rootElement())
     86         m_translate = FloatPoint(start.x() - rootElement()->currentTranslate().x(), rootElement()->currentTranslate().y() + start.y());
     87 }
     88 
     89 void SVGDocument::updatePan(const FloatPoint& pos) const
     90 {
     91     if (rootElement()) {
     92         rootElement()->setCurrentTranslate(FloatPoint(pos.x() - m_translate.x(), m_translate.y() - pos.y()));
     93         if (renderer())
     94             renderer()->repaint();
     95     }
     96 }
     97 
     98 bool SVGDocument::childShouldCreateRenderer(Node* node) const
     99 {
    100     if (node->hasTagName(SVGNames::svgTag))
    101         return static_cast<SVGSVGElement*>(node)->isValid();
    102     return true;
    103 }
    104 
    105 }
    106 
    107 // vim:ts=4:noet
    108 #endif // ENABLE(SVG)
    109