| /* |
| * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009 Google, Inc. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| |
| #include "core/rendering/svg/RenderSVGTransformableContainer.h" |
| |
| #include "SVGNames.h" |
| #include "core/rendering/svg/SVGRenderSupport.h" |
| #include "core/svg/SVGGraphicsElement.h" |
| #include "core/svg/SVGUseElement.h" |
| |
| namespace WebCore { |
| |
| RenderSVGTransformableContainer::RenderSVGTransformableContainer(SVGGraphicsElement* node) |
| : RenderSVGContainer(node) |
| , m_needsTransformUpdate(true) |
| , m_didTransformToRootUpdate(false) |
| { |
| } |
| |
| bool RenderSVGTransformableContainer::calculateLocalTransform() |
| { |
| SVGGraphicsElement* element = toSVGGraphicsElement(this->element()); |
| |
| // If we're either the renderer for a <use> element, or for any <g> element inside the shadow |
| // tree, that was created during the use/symbol/svg expansion in SVGUseElement. These containers |
| // need to respect the translations induced by their corresponding use elements x/y attributes. |
| SVGUseElement* useElement = 0; |
| if (element->hasTagName(SVGNames::useTag)) |
| useElement = toSVGUseElement(element); |
| else if (element->isInShadowTree() && element->hasTagName(SVGNames::gTag)) { |
| SVGElement* correspondingElement = element->correspondingElement(); |
| if (correspondingElement && correspondingElement->hasTagName(SVGNames::useTag)) |
| useElement = toSVGUseElement(correspondingElement); |
| } |
| |
| if (useElement) { |
| SVGLengthContext lengthContext(useElement); |
| FloatSize translation(useElement->xCurrentValue().value(lengthContext), useElement->yCurrentValue().value(lengthContext)); |
| if (translation != m_lastTranslation) |
| m_needsTransformUpdate = true; |
| m_lastTranslation = translation; |
| } |
| |
| m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent()); |
| if (!m_needsTransformUpdate) |
| return false; |
| |
| m_localTransform = element->animatedLocalTransform(); |
| m_localTransform.translate(m_lastTranslation.width(), m_lastTranslation.height()); |
| m_needsTransformUpdate = false; |
| return true; |
| } |
| |
| } |