1 /*
2 * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 * Copyright (C) 2009 Google, Inc.
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
24 #if ENABLE(SVG)
25 #include "RenderSVGTransformableContainer.h"
26
27 #include "SVGNames.h"
28 #include "SVGShadowTreeElements.h"
29 #include "SVGStyledTransformableElement.h"
30
31 namespace WebCore {
32
RenderSVGTransformableContainer(SVGStyledTransformableElement * node)33 RenderSVGTransformableContainer::RenderSVGTransformableContainer(SVGStyledTransformableElement* node)
34 : RenderSVGContainer(node)
35 , m_needsTransformUpdate(true)
36 {
37 }
38
calculateLocalTransform()39 bool RenderSVGTransformableContainer::calculateLocalTransform()
40 {
41 SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
42
43 bool needsUpdate = m_needsTransformUpdate;
44 if (needsUpdate) {
45 m_localTransform = element->animatedLocalTransform();
46 m_needsTransformUpdate = false;
47 }
48
49 if (!element->hasTagName(SVGNames::gTag) || !static_cast<SVGGElement*>(element)->isShadowTreeContainerElement())
50 return needsUpdate;
51
52 FloatSize translation = static_cast<SVGShadowTreeContainerElement*>(element)->containerTranslation();
53 if (!translation.width() && !translation.height())
54 return needsUpdate;
55
56 // FIXME: Could optimize this case for use to avoid refetching the animatedLocalTransform() here, if only the containerTranslation() changed.
57 if (!needsUpdate)
58 m_localTransform = element->animatedLocalTransform();
59
60 m_localTransform.translate(translation.width(), translation.height());
61 return true;
62 }
63
64 }
65
66 #endif // ENABLE(SVG)
67