| /* |
| * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * |
| * 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 "third_party/blink/renderer/core/svg/svg_stop_element.h" |
| |
| #include "third_party/blink/renderer/core/style/computed_style.h" |
| #include "third_party/blink/renderer/core/svg/svg_gradient_element.h" |
| |
| namespace blink { |
| |
| inline SVGStopElement::SVGStopElement(Document& document) |
| : SVGElement(svg_names::kStopTag, document), |
| offset_(SVGAnimatedNumber::Create(this, |
| svg_names::kOffsetAttr, |
| SVGNumberAcceptPercentage::Create())) { |
| AddToPropertyMap(offset_); |
| |
| // Since stop elements don't have corresponding layout objects, we rely on |
| // style recalc callbacks for invalidation. |
| DCHECK(HasCustomStyleCallbacks()); |
| } |
| |
| void SVGStopElement::Trace(blink::Visitor* visitor) { |
| visitor->Trace(offset_); |
| SVGElement::Trace(visitor); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGStopElement) |
| |
| namespace { |
| |
| void InvalidateInstancesAndAncestorResources(SVGStopElement* stop_element) { |
| SVGElement::InvalidationGuard invalidation_guard(stop_element); |
| |
| Element* parent = stop_element->parentElement(); |
| if (auto* gradient = ToSVGGradientElementOrNull(parent)) |
| gradient->InvalidateGradient(layout_invalidation_reason::kChildChanged); |
| } |
| |
| } // namespace |
| |
| void SVGStopElement::SvgAttributeChanged(const QualifiedName& attr_name) { |
| if (attr_name == svg_names::kOffsetAttr) { |
| InvalidateInstancesAndAncestorResources(this); |
| return; |
| } |
| |
| SVGElement::SvgAttributeChanged(attr_name); |
| } |
| |
| void SVGStopElement::DidRecalcStyle(StyleRecalcChange change) { |
| SVGElement::DidRecalcStyle(change); |
| |
| InvalidateInstancesAndAncestorResources(this); |
| } |
| |
| Color SVGStopElement::StopColorIncludingOpacity() const { |
| const ComputedStyle* style = NonLayoutObjectComputedStyle(); |
| |
| // Normally, we should always have a computed non-layout style for <stop> |
| // elements. But there are some odd corner cases (*cough* shadow DOM v0 |
| // undistributed light tree *cough*) which leave it null. |
| if (!style) |
| return Color::kBlack; |
| |
| const SVGComputedStyle& svg_style = style->SvgStyle(); |
| return svg_style.StopColor().CombineWithAlpha(svg_style.StopOpacity()); |
| } |
| |
| } // namespace blink |