1/*
2 * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@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#include "core/svg/SVGDocument.h"
23
24#include "SVGNames.h"
25#include "bindings/v8/ExceptionStatePlaceholder.h"
26#include "core/events/ThreadLocalEventNames.h"
27#include "core/frame/FrameView.h"
28#include "core/rendering/RenderView.h"
29#include "core/svg/SVGElement.h"
30#include "core/svg/SVGSVGElement.h"
31#include "core/svg/SVGViewSpec.h"
32#include "core/svg/SVGZoomAndPan.h"
33#include "core/svg/SVGZoomEvent.h"
34
35namespace WebCore {
36
37SVGDocument::SVGDocument(const DocumentInit& initializer)
38    : Document(initializer, SVGDocumentClass)
39{
40    ScriptWrappable::init(this);
41}
42
43SVGSVGElement* SVGDocument::rootElement() const
44{
45    Element* elem = documentElement();
46    if (elem && elem->hasTagName(SVGNames::svgTag))
47        return toSVGSVGElement(elem);
48
49    return 0;
50}
51
52void SVGDocument::dispatchZoomEvent(float prevScale, float newScale)
53{
54    RefPtr<SVGZoomEvent> event = SVGZoomEvent::create();
55    event->initEvent(EventTypeNames::zoom, true, false);
56    event->setPreviousScale(prevScale);
57    event->setNewScale(newScale);
58    rootElement()->dispatchEvent(event.release(), IGNORE_EXCEPTION);
59}
60
61void SVGDocument::dispatchScrollEvent()
62{
63    RefPtr<Event> event = Event::create();
64    event->initEvent(EventTypeNames::scroll, true, false);
65    rootElement()->dispatchEvent(event.release(), IGNORE_EXCEPTION);
66}
67
68bool SVGDocument::zoomAndPanEnabled() const
69{
70    if (SVGSVGElement* svg = rootElement()) {
71        if (svg->useCurrentView()) {
72            if (svg->currentView())
73                return svg->currentView()->zoomAndPan() == SVGZoomAndPanMagnify;
74        } else {
75            return svg->zoomAndPan() == SVGZoomAndPanMagnify;
76        }
77    }
78
79    return false;
80}
81
82void SVGDocument::startPan(const FloatPoint& start)
83{
84    if (SVGSVGElement* svg = rootElement())
85        m_translate = FloatPoint(start.x() - svg->currentTranslate().x(), start.y() - svg->currentTranslate().y());
86}
87
88void SVGDocument::updatePan(const FloatPoint& pos) const
89{
90    if (SVGSVGElement* svg = rootElement()) {
91        svg->setCurrentTranslate(FloatPoint(pos.x() - m_translate.x(), pos.y() - m_translate.y()));
92        if (renderer())
93            renderer()->repaint();
94    }
95}
96
97bool SVGDocument::childShouldCreateRenderer(const Node& child) const
98{
99    if (child.hasTagName(SVGNames::svgTag))
100        return toSVGSVGElement(&child)->isValid();
101    return true;
102}
103
104PassRefPtr<Document> SVGDocument::cloneDocumentWithoutChildren()
105{
106    return create(DocumentInit(url()));
107}
108
109}
110