| /* |
| * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2008 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2008 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * 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 "SVGRadialGradientElement.h" |
| |
| #include "FloatConversion.h" |
| #include "FloatPoint.h" |
| #include "RadialGradientAttributes.h" |
| #include "RenderSVGResourceRadialGradient.h" |
| #include "SVGNames.h" |
| #include "SVGStopElement.h" |
| #include "SVGUnitTypes.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/NeverDestroyed.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(SVGRadialGradientElement); |
| |
| // Animated property definitions |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::cxAttr, Cx, cx) |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::cyAttr, Cy, cy) |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::rAttr, R, r) |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::fxAttr, Fx, fx) |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::fyAttr, Fy, fy) |
| DEFINE_ANIMATED_LENGTH(SVGRadialGradientElement, SVGNames::frAttr, Fr, fr) |
| |
| BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGRadialGradientElement) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(cx) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(cy) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(r) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(fx) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(fy) |
| REGISTER_LOCAL_ANIMATED_PROPERTY(fr) |
| REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGradientElement) |
| END_REGISTER_ANIMATED_PROPERTIES |
| |
| inline SVGRadialGradientElement::SVGRadialGradientElement(const QualifiedName& tagName, Document& document) |
| : SVGGradientElement(tagName, document) |
| , m_cx(LengthModeWidth, "50%") |
| , m_cy(LengthModeHeight, "50%") |
| , m_r(LengthModeOther, "50%") |
| , m_fx(LengthModeWidth) |
| , m_fy(LengthModeHeight) |
| , m_fr(LengthModeOther, "0%") |
| { |
| // Spec: If the cx/cy/r/fr attribute is not specified, the effect is as if a value of "50%" were specified. |
| ASSERT(hasTagName(SVGNames::radialGradientTag)); |
| registerAnimatedPropertiesForSVGRadialGradientElement(); |
| } |
| |
| Ref<SVGRadialGradientElement> SVGRadialGradientElement::create(const QualifiedName& tagName, Document& document) |
| { |
| return adoptRef(*new SVGRadialGradientElement(tagName, document)); |
| } |
| |
| bool SVGRadialGradientElement::isSupportedAttribute(const QualifiedName& attrName) |
| { |
| static const auto supportedAttributes = makeNeverDestroyed(HashSet<QualifiedName> { |
| SVGNames::cxAttr.get(), SVGNames::cyAttr.get(), SVGNames::fxAttr.get(), SVGNames::fyAttr.get(), SVGNames::rAttr.get(), SVGNames::frAttr.get(), |
| }); |
| return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName); |
| } |
| |
| void SVGRadialGradientElement::parseAttribute(const QualifiedName& name, const AtomicString& value) |
| { |
| SVGParsingError parseError = NoError; |
| |
| if (name == SVGNames::cxAttr) |
| setCxBaseValue(SVGLengthValue::construct(LengthModeWidth, value, parseError)); |
| else if (name == SVGNames::cyAttr) |
| setCyBaseValue(SVGLengthValue::construct(LengthModeHeight, value, parseError)); |
| else if (name == SVGNames::rAttr) |
| setRBaseValue(SVGLengthValue::construct(LengthModeOther, value, parseError, ForbidNegativeLengths)); |
| else if (name == SVGNames::fxAttr) |
| setFxBaseValue(SVGLengthValue::construct(LengthModeWidth, value, parseError)); |
| else if (name == SVGNames::fyAttr) |
| setFyBaseValue(SVGLengthValue::construct(LengthModeHeight, value, parseError)); |
| else if (name == SVGNames::frAttr) |
| setFrBaseValue(SVGLengthValue::construct(LengthModeOther, value, parseError, ForbidNegativeLengths)); |
| |
| reportAttributeParsingError(parseError, name, value); |
| |
| SVGGradientElement::parseAttribute(name, value); |
| } |
| |
| void SVGRadialGradientElement::svgAttributeChanged(const QualifiedName& attrName) |
| { |
| if (!isSupportedAttribute(attrName)) { |
| SVGGradientElement::svgAttributeChanged(attrName); |
| return; |
| } |
| |
| InstanceInvalidationGuard guard(*this); |
| |
| updateRelativeLengthsInformation(); |
| |
| if (RenderObject* object = renderer()) |
| object->setNeedsLayout(); |
| } |
| |
| RenderPtr<RenderElement> SVGRadialGradientElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&) |
| { |
| return createRenderer<RenderSVGResourceRadialGradient>(*this, WTFMove(style)); |
| } |
| |
| static void setGradientAttributes(SVGGradientElement& element, RadialGradientAttributes& attributes, bool isRadial = true) |
| { |
| if (!attributes.hasSpreadMethod() && element.hasAttribute(SVGNames::spreadMethodAttr)) |
| attributes.setSpreadMethod(element.spreadMethod()); |
| |
| if (!attributes.hasGradientUnits() && element.hasAttribute(SVGNames::gradientUnitsAttr)) |
| attributes.setGradientUnits(element.gradientUnits()); |
| |
| if (!attributes.hasGradientTransform() && element.hasAttribute(SVGNames::gradientTransformAttr)) { |
| AffineTransform transform; |
| element.gradientTransform().concatenate(transform); |
| attributes.setGradientTransform(transform); |
| } |
| |
| if (!attributes.hasStops()) { |
| const Vector<Gradient::ColorStop>& stops(element.buildStops()); |
| if (!stops.isEmpty()) |
| attributes.setStops(stops); |
| } |
| |
| if (isRadial) { |
| SVGRadialGradientElement& radial = downcast<SVGRadialGradientElement>(element); |
| |
| if (!attributes.hasCx() && element.hasAttribute(SVGNames::cxAttr)) |
| attributes.setCx(radial.cx()); |
| |
| if (!attributes.hasCy() && element.hasAttribute(SVGNames::cyAttr)) |
| attributes.setCy(radial.cy()); |
| |
| if (!attributes.hasR() && element.hasAttribute(SVGNames::rAttr)) |
| attributes.setR(radial.r()); |
| |
| if (!attributes.hasFx() && element.hasAttribute(SVGNames::fxAttr)) |
| attributes.setFx(radial.fx()); |
| |
| if (!attributes.hasFy() && element.hasAttribute(SVGNames::fyAttr)) |
| attributes.setFy(radial.fy()); |
| |
| if (!attributes.hasFr() && element.hasAttribute(SVGNames::frAttr)) |
| attributes.setFr(radial.fr()); |
| } |
| } |
| |
| bool SVGRadialGradientElement::collectGradientAttributes(RadialGradientAttributes& attributes) |
| { |
| if (!renderer()) |
| return false; |
| |
| HashSet<SVGGradientElement*> processedGradients; |
| SVGGradientElement* current = this; |
| |
| setGradientAttributes(*current, attributes); |
| processedGradients.add(current); |
| |
| while (true) { |
| // Respect xlink:href, take attributes from referenced element |
| auto refNode = makeRefPtr(SVGURIReference::targetElementFromIRIString(current->href(), document())); |
| if (is<SVGGradientElement>(refNode)) { |
| current = downcast<SVGGradientElement>(refNode.get()); |
| |
| // Cycle detection |
| if (processedGradients.contains(current)) |
| break; |
| |
| if (!current->renderer()) |
| return false; |
| |
| setGradientAttributes(*current, attributes, current->hasTagName(SVGNames::radialGradientTag)); |
| processedGradients.add(current); |
| } else |
| break; |
| } |
| |
| // Handle default values for fx/fy |
| if (!attributes.hasFx()) |
| attributes.setFx(attributes.cx()); |
| |
| if (!attributes.hasFy()) |
| attributes.setFy(attributes.cy()); |
| |
| return true; |
| } |
| |
| bool SVGRadialGradientElement::selfHasRelativeLengths() const |
| { |
| return cx().isRelative() |
| || cy().isRelative() |
| || r().isRelative() |
| || fx().isRelative() |
| || fy().isRelative() |
| || fr().isRelative(); |
| } |
| |
| } |