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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/svg/SVGLinearGradientElement.cpp | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/svg/SVGLinearGradientElement.cpp')
-rw-r--r-- | Source/WebCore/svg/SVGLinearGradientElement.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/Source/WebCore/svg/SVGLinearGradientElement.cpp b/Source/WebCore/svg/SVGLinearGradientElement.cpp new file mode 100644 index 0000000..5bece06 --- /dev/null +++ b/Source/WebCore/svg/SVGLinearGradientElement.cpp @@ -0,0 +1,205 @@ +/* + * 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" + +#if ENABLE(SVG) +#include "SVGLinearGradientElement.h" + +#include "Attribute.h" +#include "Document.h" +#include "FloatPoint.h" +#include "LinearGradientAttributes.h" +#include "RenderSVGResourceLinearGradient.h" +#include "SVGLength.h" +#include "SVGNames.h" +#include "SVGTransform.h" +#include "SVGTransformList.h" +#include "SVGUnitTypes.h" + +namespace WebCore { + +// Animated property definitions +DEFINE_ANIMATED_LENGTH(SVGLinearGradientElement, SVGNames::x1Attr, X1, x1) +DEFINE_ANIMATED_LENGTH(SVGLinearGradientElement, SVGNames::y1Attr, Y1, y1) +DEFINE_ANIMATED_LENGTH(SVGLinearGradientElement, SVGNames::x2Attr, X2, x2) +DEFINE_ANIMATED_LENGTH(SVGLinearGradientElement, SVGNames::y2Attr, Y2, y2) + +inline SVGLinearGradientElement::SVGLinearGradientElement(const QualifiedName& tagName, Document* document) + : SVGGradientElement(tagName, document) + , m_x1(LengthModeWidth) + , m_y1(LengthModeHeight) + , m_x2(LengthModeWidth, "100%") + , m_y2(LengthModeHeight) +{ + // Spec: If the x2 attribute is not specified, the effect is as if a value of "100%" were specified. +} + +PassRefPtr<SVGLinearGradientElement> SVGLinearGradientElement::create(const QualifiedName& tagName, Document* document) +{ + return adoptRef(new SVGLinearGradientElement(tagName, document)); +} + +void SVGLinearGradientElement::parseMappedAttribute(Attribute* attr) +{ + if (attr->name() == SVGNames::x1Attr) + setX1BaseValue(SVGLength(LengthModeWidth, attr->value())); + else if (attr->name() == SVGNames::y1Attr) + setY1BaseValue(SVGLength(LengthModeHeight, attr->value())); + else if (attr->name() == SVGNames::x2Attr) + setX2BaseValue(SVGLength(LengthModeWidth, attr->value())); + else if (attr->name() == SVGNames::y2Attr) + setY2BaseValue(SVGLength(LengthModeHeight, attr->value())); + else + SVGGradientElement::parseMappedAttribute(attr); +} + +void SVGLinearGradientElement::svgAttributeChanged(const QualifiedName& attrName) +{ + SVGGradientElement::svgAttributeChanged(attrName); + + if (attrName == SVGNames::x1Attr + || attrName == SVGNames::y1Attr + || attrName == SVGNames::x2Attr + || attrName == SVGNames::y2Attr) { + updateRelativeLengthsInformation(); + + RenderObject* object = renderer(); + if (!object) + return; + + object->setNeedsLayout(true); + } +} + +void SVGLinearGradientElement::synchronizeProperty(const QualifiedName& attrName) +{ + SVGGradientElement::synchronizeProperty(attrName); + + if (attrName == anyQName()) { + synchronizeX1(); + synchronizeY1(); + synchronizeX2(); + synchronizeY2(); + return; + } + + if (attrName == SVGNames::x1Attr) + synchronizeX1(); + else if (attrName == SVGNames::y1Attr) + synchronizeY1(); + else if (attrName == SVGNames::x2Attr) + synchronizeX2(); + else if (attrName == SVGNames::y2Attr) + synchronizeY2(); +} + +RenderObject* SVGLinearGradientElement::createRenderer(RenderArena* arena, RenderStyle*) +{ + return new (arena) RenderSVGResourceLinearGradient(this); +} + +void SVGLinearGradientElement::collectGradientAttributes(LinearGradientAttributes& attributes) +{ + HashSet<SVGGradientElement*> processedGradients; + + bool isLinear = true; + SVGGradientElement* current = this; + + while (current) { + if (!attributes.hasSpreadMethod() && current->hasAttribute(SVGNames::spreadMethodAttr)) + attributes.setSpreadMethod((GradientSpreadMethod) current->spreadMethod()); + + if (!attributes.hasBoundingBoxMode() && current->hasAttribute(SVGNames::gradientUnitsAttr)) + attributes.setBoundingBoxMode(current->gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX); + + if (!attributes.hasGradientTransform() && current->hasAttribute(SVGNames::gradientTransformAttr)) { + AffineTransform transform; + current->gradientTransform().concatenate(transform); + attributes.setGradientTransform(transform); + } + + if (!attributes.hasStops()) { + const Vector<Gradient::ColorStop>& stops(current->buildStops()); + if (!stops.isEmpty()) + attributes.setStops(stops); + } + + if (isLinear) { + SVGLinearGradientElement* linear = static_cast<SVGLinearGradientElement*>(current); + + if (!attributes.hasX1() && current->hasAttribute(SVGNames::x1Attr)) + attributes.setX1(linear->x1()); + + if (!attributes.hasY1() && current->hasAttribute(SVGNames::y1Attr)) + attributes.setY1(linear->y1()); + + if (!attributes.hasX2() && current->hasAttribute(SVGNames::x2Attr)) + attributes.setX2(linear->x2()); + + if (!attributes.hasY2() && current->hasAttribute(SVGNames::y2Attr)) + attributes.setY2(linear->y2()); + } + + processedGradients.add(current); + + // Respect xlink:href, take attributes from referenced element + Node* refNode = ownerDocument()->getElementById(SVGURIReference::getTarget(current->href())); + if (refNode && (refNode->hasTagName(SVGNames::linearGradientTag) || refNode->hasTagName(SVGNames::radialGradientTag))) { + current = static_cast<SVGGradientElement*>(refNode); + + // Cycle detection + if (processedGradients.contains(current)) { + current = 0; + break; + } + + isLinear = current->hasTagName(SVGNames::linearGradientTag); + } else + current = 0; + } +} + +void SVGLinearGradientElement::calculateStartEndPoints(const LinearGradientAttributes& attributes, FloatPoint& startPoint, FloatPoint& endPoint) +{ + // Determine gradient start/end points + if (attributes.boundingBoxMode()) { + startPoint = FloatPoint(attributes.x1().valueAsPercentage(), attributes.y1().valueAsPercentage()); + endPoint = FloatPoint(attributes.x2().valueAsPercentage(), attributes.y2().valueAsPercentage()); + } else { + startPoint = FloatPoint(attributes.x1().value(this), attributes.y1().value(this)); + endPoint = FloatPoint(attributes.x2().value(this), attributes.y2().value(this)); + } +} + +bool SVGLinearGradientElement::selfHasRelativeLengths() const +{ + return x1().isRelative() + || y1().isRelative() + || x2().isRelative() + || y2().isRelative(); +} + +} + +#endif // ENABLE(SVG) |