| /* |
| * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009 Google, Inc. |
| * Copyright (c) 2020, 2021, 2022 Igalia S.L. |
| * |
| * 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 "RenderSVGTransformableContainer.h" |
| |
| #if ENABLE(LAYER_BASED_SVG_ENGINE) |
| #include "RenderSVGModelObjectInlines.h" |
| #include "SVGContainerLayout.h" |
| #include "SVGElementTypeHelpers.h" |
| #include "SVGGElement.h" |
| #include "SVGGraphicsElement.h" |
| #include "SVGPathData.h" |
| #include "SVGUseElement.h" |
| #include <wtf/IsoMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(RenderSVGTransformableContainer); |
| |
| RenderSVGTransformableContainer::RenderSVGTransformableContainer(SVGGraphicsElement& element, RenderStyle&& style) |
| : RenderSVGContainer(element, WTFMove(style)) |
| { |
| } |
| |
| inline SVGUseElement* associatedUseElement(SVGGraphicsElement& 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. |
| if (is<SVGUseElement>(element)) |
| return &downcast<SVGUseElement>(element); |
| |
| if (element.isInShadowTree() && is<SVGGElement>(element)) { |
| SVGElement* correspondingElement = element.correspondingElement(); |
| if (is<SVGUseElement>(correspondingElement)) |
| return downcast<SVGUseElement>(correspondingElement); |
| } |
| |
| return nullptr; |
| } |
| |
| FloatPoint RenderSVGTransformableContainer::additionalContainerTranslation() const |
| { |
| if (auto* useElement = associatedUseElement(graphicsElement())) { |
| // FIXME: [LBSE] Upstream SVGLengthContext changes |
| // const auto& lengthContext = useElement->lengthContext(); |
| SVGLengthContext lengthContext(useElement); |
| return { useElement->x().value(lengthContext), useElement->y().value(lengthContext) }; |
| } |
| |
| return { }; |
| } |
| |
| void RenderSVGTransformableContainer::calculateViewport() |
| { |
| RenderSVGContainer::calculateViewport(); |
| |
| // FIXME: [LBSE] Upstream SVGLengthContext changes |
| // if (auto* useElement = associatedUseElement(graphicsElement())) |
| // useElement->updateLengthContext(); |
| |
| m_supplementalLocalToParentTransform.makeIdentity(); |
| |
| auto translation = additionalContainerTranslation(); |
| m_supplementalLocalToParentTransform.translate(translation.x(), translation.y()); |
| |
| m_didTransformToRootUpdate = m_hadTransformUpdate || SVGContainerLayout::transformToRootChanged(parent()); |
| } |
| |
| void RenderSVGTransformableContainer::layoutChildren() |
| { |
| RenderSVGContainer::layoutChildren(); |
| m_didTransformToRootUpdate = false; |
| } |
| |
| void RenderSVGTransformableContainer::updateFromStyle() |
| { |
| RenderSVGContainer::updateFromStyle(); |
| |
| if (associatedUseElement(graphicsElement())) { |
| setHasSVGTransform(); |
| setHasTransformRelatedProperty(); |
| } |
| } |
| |
| void RenderSVGTransformableContainer::applyTransform(TransformationMatrix& transform, const RenderStyle& style, const FloatRect& boundingBox, OptionSet<RenderStyle::TransformOperationOption> options) const |
| { |
| applySVGTransform(transform, graphicsElement(), style, boundingBox, options); |
| } |
| |
| void RenderSVGTransformableContainer::styleWillChange(StyleDifference diff, const RenderStyle& newStyle) |
| { |
| const RenderStyle* oldStyle = hasInitializedStyle() ? &style() : nullptr; |
| if (oldStyle && oldStyle->transform() != newStyle.transform()) |
| setHadTransformUpdate(); |
| RenderSVGContainer::styleWillChange(diff, newStyle); |
| } |
| |
| SVGGraphicsElement& RenderSVGTransformableContainer::graphicsElement() const |
| { |
| return downcast<SVGGraphicsElement>(RenderSVGContainer::element()); |
| } |
| |
| } |
| |
| #endif // ENABLE(LAYER_BASED_SVG_ENGINE) |