diff -r 000000000000 -r 4f2f89ce4247 WebCore/svg/SVGMaskElement.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGMaskElement.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,187 @@
+/*
+    Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+                  2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
+                  2005 Alexander Kellett <lypanov@kde.org>
+                  2009 Dirk Schulze <krit@webkit.org>
+    Copyright (C) Research In Motion Limited 2009-2010. 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 "SVGMaskElement.h"
+
+#include "Attribute.h"
+#include "CSSStyleSelector.h"
+#include "RenderSVGResourceMasker.h"
+#include "SVGLength.h"
+#include "SVGNames.h"
+#include "SVGRenderSupport.h"
+#include "SVGUnitTypes.h"
+
+using namespace std;
+
+namespace WebCore {
+
+SVGMaskElement::SVGMaskElement(const QualifiedName& tagName, Document* doc)
+    : SVGStyledLocatableElement(tagName, doc)
+    , SVGURIReference()
+    , SVGTests()
+    , SVGLangSpace()
+    , SVGExternalResourcesRequired()
+    , m_maskUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
+    , m_maskContentUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
+    , m_x(LengthModeWidth, "-10%")
+    , m_y(LengthModeHeight, "-10%")
+    , m_width(LengthModeWidth, "120%")
+    , m_height(LengthModeHeight, "120%")
+{
+    // Spec: If the x/y attribute is not specified, the effect is as if a value of "-10%" were specified.
+    // Spec: If the width/height attribute is not specified, the effect is as if a value of "120%" were specified.
+}
+
+SVGMaskElement::~SVGMaskElement()
+{
+}
+
+void SVGMaskElement::parseMappedAttribute(Attribute* attr)
+{
+    if (attr->name() == SVGNames::maskUnitsAttr) {
+        if (attr->value() == "userSpaceOnUse")
+            setMaskUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
+        else if (attr->value() == "objectBoundingBox")
+            setMaskUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
+    } else if (attr->name() == SVGNames::maskContentUnitsAttr) {
+        if (attr->value() == "userSpaceOnUse")
+            setMaskContentUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
+        else if (attr->value() == "objectBoundingBox")
+            setMaskContentUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
+    } else if (attr->name() == SVGNames::xAttr)
+        setXBaseValue(SVGLength(LengthModeWidth, attr->value()));
+    else if (attr->name() == SVGNames::yAttr)
+        setYBaseValue(SVGLength(LengthModeHeight, attr->value()));
+    else if (attr->name() == SVGNames::widthAttr)
+        setWidthBaseValue(SVGLength(LengthModeWidth, attr->value()));
+    else if (attr->name() == SVGNames::heightAttr)
+        setHeightBaseValue(SVGLength(LengthModeHeight, attr->value()));
+    else {
+        if (SVGURIReference::parseMappedAttribute(attr))
+            return;
+        if (SVGTests::parseMappedAttribute(attr))
+            return;
+        if (SVGLangSpace::parseMappedAttribute(attr))
+            return;
+        if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
+            return;
+        SVGStyledElement::parseMappedAttribute(attr);
+    }
+}
+
+void SVGMaskElement::svgAttributeChanged(const QualifiedName& attrName)
+{
+    SVGStyledElement::svgAttributeChanged(attrName);
+
+    bool invalidateClients = false;
+    if (attrName == SVGNames::xAttr
+        || attrName == SVGNames::yAttr
+        || attrName == SVGNames::widthAttr
+        || attrName == SVGNames::heightAttr) {
+        invalidateClients = true;
+        updateRelativeLengthsInformation();
+    }
+
+    if (invalidateClients
+        || attrName == SVGNames::maskUnitsAttr
+        || attrName == SVGNames::maskContentUnitsAttr
+        || SVGURIReference::isKnownAttribute(attrName)
+        || SVGTests::isKnownAttribute(attrName)
+        || SVGLangSpace::isKnownAttribute(attrName)
+        || SVGExternalResourcesRequired::isKnownAttribute(attrName)
+        || SVGStyledElement::isKnownAttribute(attrName))
+        invalidateResourceClients();
+}
+
+void SVGMaskElement::synchronizeProperty(const QualifiedName& attrName)
+{
+    SVGStyledElement::synchronizeProperty(attrName);
+
+    if (attrName == anyQName()) {
+        synchronizeMaskUnits();
+        synchronizeMaskContentUnits();
+        synchronizeX();
+        synchronizeY();
+        synchronizeExternalResourcesRequired();
+        synchronizeHref();
+        return;
+    }
+
+    if (attrName == SVGNames::maskUnitsAttr)
+        synchronizeMaskUnits();
+    else if (attrName == SVGNames::maskContentUnitsAttr)
+        synchronizeMaskContentUnits();
+    else if (attrName == SVGNames::xAttr)
+        synchronizeX();
+    else if (attrName == SVGNames::yAttr)
+        synchronizeY();
+    else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
+        synchronizeExternalResourcesRequired();
+    else if (SVGURIReference::isKnownAttribute(attrName))
+        synchronizeHref();
+}
+
+void SVGMaskElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+{
+    SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+
+    if (!changedByParser)
+        invalidateResourceClients();
+}
+
+FloatRect SVGMaskElement::maskBoundingBox(const FloatRect& objectBoundingBox) const
+{
+    FloatRect maskBBox;
+    if (maskUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
+        maskBBox = FloatRect(x().valueAsPercentage() * objectBoundingBox.width() + objectBoundingBox.x(),
+                             y().valueAsPercentage() * objectBoundingBox.height() + objectBoundingBox.y(),
+                             width().valueAsPercentage() * objectBoundingBox.width(),
+                             height().valueAsPercentage() * objectBoundingBox.height());
+    else
+        maskBBox = FloatRect(x().value(this),
+                             y().value(this),
+                             width().value(this),
+                             height().value(this));
+
+    return maskBBox;
+}
+
+RenderObject* SVGMaskElement::createRenderer(RenderArena* arena, RenderStyle*)
+{
+    return new (arena) RenderSVGResourceMasker(this);
+}
+
+bool SVGMaskElement::selfHasRelativeLengths() const
+{
+    return x().isRelative()
+        || y().isRelative()
+        || width().isRelative()
+        || height().isRelative();
+}
+
+}
+
+#endif // ENABLE(SVG)