Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 172 insertions, 0 deletions

diff --git a/Source/WebCore/svg/SVGGradientElement.cpp b/Source/WebCore/svg/SVGGradientElement.cpp
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+++ b/Source/WebCore/svg/SVGGradientElement.cpp
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+/*
+ * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+ * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.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"
+
+#if ENABLE(SVG)
+#include "SVGGradientElement.h"
+
+#include "Attribute.h"
+#include "CSSStyleSelector.h"
+#include "RenderSVGHiddenContainer.h"
+#include "RenderSVGPath.h"
+#include "RenderSVGResourceLinearGradient.h"
+#include "RenderSVGResourceRadialGradient.h"
+#include "SVGElementInstance.h"
+#include "SVGNames.h"
+#include "SVGStopElement.h"
+#include "SVGTransformList.h"
+#include "SVGTransformable.h"
+
+namespace WebCore {
+
+// Animated property definitions
+DEFINE_ANIMATED_ENUMERATION(SVGGradientElement, SVGNames::spreadMethodAttr, SpreadMethod, spreadMethod, SVGSpreadMethodType)
+DEFINE_ANIMATED_ENUMERATION(SVGGradientElement, SVGNames::gradientUnitsAttr, GradientUnits, gradientUnits, SVGUnitTypes::SVGUnitType)
+DEFINE_ANIMATED_TRANSFORM_LIST(SVGGradientElement, SVGNames::gradientTransformAttr, GradientTransform, gradientTransform)
+DEFINE_ANIMATED_STRING(SVGGradientElement, XLinkNames::hrefAttr, Href, href)
+DEFINE_ANIMATED_BOOLEAN(SVGGradientElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
+
+BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGGradientElement)
+    REGISTER_LOCAL_ANIMATED_PROPERTY(spreadMethod)
+    REGISTER_LOCAL_ANIMATED_PROPERTY(gradientUnits)
+    REGISTER_LOCAL_ANIMATED_PROPERTY(gradientTransform)
+    REGISTER_LOCAL_ANIMATED_PROPERTY(href)
+    REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
+    REGISTER_PARENT_ANIMATED_PROPERTIES(SVGStyledElement)
+END_REGISTER_ANIMATED_PROPERTIES
+ 
+SVGGradientElement::SVGGradientElement(const QualifiedName& tagName, Document* document)
+    : SVGStyledElement(tagName, document)
+    , m_spreadMethod(SVGSpreadMethodPad)
+    , m_gradientUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
+{
+    registerAnimatedPropertiesForSVGGradientElement();
+}
+
+bool SVGGradientElement::isSupportedAttribute(const QualifiedName& attrName)
+{
+    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
+    if (supportedAttributes.isEmpty()) {
+        SVGURIReference::addSupportedAttributes(supportedAttributes);
+        SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
+        supportedAttributes.add(SVGNames::gradientUnitsAttr);
+        supportedAttributes.add(SVGNames::gradientTransformAttr);
+        supportedAttributes.add(SVGNames::spreadMethodAttr);
+    }
+    return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName);
+}
+
+void SVGGradientElement::parseMappedAttribute(Attribute* attr)
+{
+    if (!isSupportedAttribute(attr->name())) {
+        SVGStyledElement::parseMappedAttribute(attr);
+        return;
+    }
+
+    if (attr->name() == SVGNames::gradientUnitsAttr) {
+        SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(attr->value());
+        if (propertyValue > 0)
+            setGradientUnitsBaseValue(propertyValue);
+        return;
+    }
+
+    if (attr->name() == SVGNames::gradientTransformAttr) {
+        SVGTransformList newList;
+        if (!SVGTransformable::parseTransformAttribute(newList, attr->value()))
+            newList.clear();
+
+        detachAnimatedGradientTransformListWrappers(newList.size());
+        setGradientTransformBaseValue(newList);
+        return;
+    }
+
+    if (attr->name() == SVGNames::spreadMethodAttr) {
+        SVGSpreadMethodType propertyValue = SVGPropertyTraits<SVGSpreadMethodType>::fromString(attr->value());
+        if (propertyValue > 0)
+            setSpreadMethodBaseValue(propertyValue);
+        return;
+    }
+
+    if (SVGURIReference::parseMappedAttribute(attr))
+        return;
+    if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
+        return;
+
+    ASSERT_NOT_REACHED();
+}
+
+void SVGGradientElement::svgAttributeChanged(const QualifiedName& attrName)
+{
+    if (!isSupportedAttribute(attrName)) {
+        SVGStyledElement::svgAttributeChanged(attrName);
+        return;
+    }
+
+    SVGElementInstance::InvalidationGuard invalidationGuard(this);
+    
+    if (RenderObject* object = renderer())
+        object->setNeedsLayout(true);
+}
+    
+void SVGGradientElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+{
+    SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+
+    if (changedByParser)
+        return;
+
+    if (RenderObject* object = renderer())
+        object->setNeedsLayout(true);
+}
+
+Vector<Gradient::ColorStop> SVGGradientElement::buildStops()
+{
+    Vector<Gradient::ColorStop> stops;
+
+    float previousOffset = 0.0f;
+    for (Node* n = firstChild(); n; n = n->nextSibling()) {
+        SVGElement* element = n->isSVGElement() ? static_cast<SVGElement*>(n) : 0;
+        if (!element || !element->isGradientStop())
+            continue;
+
+        SVGStopElement* stop = static_cast<SVGStopElement*>(element);
+        Color color = stop->stopColorIncludingOpacity();
+
+        // Figure out right monotonic offset
+        float offset = stop->offset();
+        offset = std::min(std::max(previousOffset, offset), 1.0f);
+        previousOffset = offset;
+
+        // Extract individual channel values
+        // FIXME: Why doesn't ColorStop take a Color and an offset??
+        float r, g, b, a;
+        color.getRGBA(r, g, b, a);
+
+        stops.append(Gradient::ColorStop(offset, r, g, b, a));
+    }
+
+    return stops;
+}
+
+}
+
+#endif // ENABLE(SVG)