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      1 /*
      2     Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox (at) kde.org>
      3                   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 "SVGZoomEvent.h"
     34 #include "SVGZoomAndPan.h"
     35 
     36 namespace WebCore {
     37 
     38 SVGDocument::SVGDocument(Frame* frame)
     39     : Document(frame, false, false)
     40 {
     41 }
     42 
     43 SVGDocument::~SVGDocument()
     44 {
     45 }
     46 
     47 SVGSVGElement* SVGDocument::rootElement() const
     48 {
     49     Element* elem = documentElement();
     50     if (elem && elem->hasTagName(SVGNames::svgTag))
     51         return static_cast<SVGSVGElement*>(elem);
     52 
     53     return 0;
     54 }
     55 
     56 void SVGDocument::dispatchZoomEvent(float prevScale, float newScale)
     57 {
     58     ExceptionCode ec = 0;
     59     RefPtr<SVGZoomEvent> event = static_pointer_cast<SVGZoomEvent>(createEvent("SVGZoomEvents", ec));
     60     event->initEvent(eventNames().zoomEvent, true, false);
     61     event->setPreviousScale(prevScale);
     62     event->setNewScale(newScale);
     63     rootElement()->dispatchEvent(event.release(), ec);
     64 }
     65 
     66 void SVGDocument::dispatchScrollEvent()
     67 {
     68     ExceptionCode ec = 0;
     69     RefPtr<Event> event = createEvent("SVGEvents", ec);
     70     event->initEvent(eventNames().scrollEvent, true, false);
     71     rootElement()->dispatchEvent(event.release(), ec);
     72 }
     73 
     74 bool SVGDocument::zoomAndPanEnabled() const
     75 {
     76     if (rootElement()) {
     77         if (rootElement()->useCurrentView()) {
     78             if (rootElement()->currentView())
     79                 return rootElement()->currentView()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;
     80         } else
     81             return rootElement()->zoomAndPan() == SVGZoomAndPan::SVG_ZOOMANDPAN_MAGNIFY;
     82     }
     83 
     84     return false;
     85 }
     86 
     87 void SVGDocument::startPan(const FloatPoint& start)
     88 {
     89     if (rootElement())
     90         m_translate = FloatPoint(start.x() - rootElement()->currentTranslate().x(), rootElement()->currentTranslate().y() + start.y());
     91 }
     92 
     93 void SVGDocument::updatePan(const FloatPoint& pos) const
     94 {
     95     if (rootElement()) {
     96         rootElement()->setCurrentTranslate(FloatPoint(pos.x() - m_translate.x(), m_translate.y() - pos.y()));
     97         if (renderer())
     98             renderer()->repaint();
     99     }
    100 }
    101 
    102 bool SVGDocument::childShouldCreateRenderer(Node* node) const
    103 {
    104     if (node->hasTagName(SVGNames::svgTag))
    105         return static_cast<SVGSVGElement*>(node)->isValid();
    106     return true;
    107 }
    108 
    109 }
    110 
    111 // vim:ts=4:noet
    112 #endif // ENABLE(SVG)
    113