1/*
2 * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) 2015 Apple Inc. All right reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23#include "SVGDocument.h"
24
25#include "SVGSVGElement.h"
26#include "SVGViewSpec.h"
27#include <wtf/IsoMallocInlines.h>
28
29namespace WebCore {
30
31WTF_MAKE_ISO_ALLOCATED_IMPL(SVGDocument);
32
33SVGDocument::SVGDocument(Frame* frame, const URL& url)
34 : XMLDocument(frame, url, SVGDocumentClass)
35{
36}
37
38RefPtr<SVGSVGElement> SVGDocument::rootElement(const Document& document)
39{
40 auto* element = document.documentElement();
41 if (!is<SVGSVGElement>(element))
42 return nullptr;
43 return downcast<SVGSVGElement>(element);
44}
45
46bool SVGDocument::zoomAndPanEnabled() const
47{
48 auto element = rootElement(*this);
49 if (!element)
50 return false;
51 return (element->useCurrentView() ? element->currentView().zoomAndPan() : element->zoomAndPan()) == SVGZoomAndPanMagnify;
52}
53
54void SVGDocument::startPan(const FloatPoint& start)
55{
56 auto element = rootElement(*this);
57 if (!element)
58 return;
59 m_panningOffset = start - element->currentTranslateValue();
60}
61
62void SVGDocument::updatePan(const FloatPoint& position) const
63{
64 auto element = rootElement(*this);
65 if (!element)
66 return;
67 element->setCurrentTranslate(position - m_panningOffset);
68}
69
70Ref<Document> SVGDocument::cloneDocumentWithoutChildren() const
71{
72 return create(nullptr, url());
73}
74
75}
76