1 files changed, 127 insertions, 0 deletions
diff --git a/WebCore/svg/SVGClipPathElement.cpp b/WebCore/svg/SVGClipPathElement.cpp
new file mode 100644
index 0000000..0e8ddbf
--- /dev/null
+++ b/WebCore/svg/SVGClipPathElement.cpp
@@ -0,0 +1,127 @@
+/*
+    Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+                  2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
+
+    This file is part of the KDE project
+
+    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 "SVGClipPathElement.h"
+
+#include "CSSStyleSelector.h"
+#include "Document.h"
+#include "SVGNames.h"
+#include "SVGTransformList.h"
+#include "SVGUnitTypes.h"
+
+namespace WebCore {
+
+SVGClipPathElement::SVGClipPathElement(const QualifiedName& tagName, Document* doc)
+    : SVGStyledTransformableElement(tagName, doc)
+    , SVGTests()
+    , SVGLangSpace()
+    , SVGExternalResourcesRequired()
+    , m_clipPathUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
+{
+}
+
+SVGClipPathElement::~SVGClipPathElement()
+{
+}
+
+ANIMATED_PROPERTY_DEFINITIONS(SVGClipPathElement, int, Enumeration, enumeration, ClipPathUnits, clipPathUnits, SVGNames::clipPathUnitsAttr, m_clipPathUnits)
+
+void SVGClipPathElement::parseMappedAttribute(MappedAttribute* attr)
+{
+    if (attr->name() == SVGNames::clipPathUnitsAttr) {
+        if (attr->value() == "userSpaceOnUse")
+            setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
+        else if (attr->value() == "objectBoundingBox")
+            setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
+    } else {
+        if (SVGTests::parseMappedAttribute(attr))
+            return;
+        if (SVGLangSpace::parseMappedAttribute(attr))
+            return;
+        if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
+            return;
+        SVGStyledTransformableElement::parseMappedAttribute(attr);
+    }
+}
+
+void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
+{
+    SVGStyledTransformableElement::svgAttributeChanged(attrName);
+
+    if (!m_clipper)
+        return;
+
+    if (attrName == SVGNames::clipPathUnitsAttr ||
+        SVGTests::isKnownAttribute(attrName) || 
+        SVGLangSpace::isKnownAttribute(attrName) ||
+        SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
+        SVGStyledTransformableElement::isKnownAttribute(attrName))
+        m_clipper->invalidate();
+}
+
+void SVGClipPathElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
+{
+    SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
+
+    if (!m_clipper)
+        return;
+
+    m_clipper->invalidate();
+}
+
+SVGResource* SVGClipPathElement::canvasResource()
+{
+    if (!m_clipper)
+        m_clipper = SVGResourceClipper::create();
+    else
+        m_clipper->resetClipData();
+
+    bool bbox = clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
+
+    RenderStyle* clipPathStyle = styleForRenderer(parent()->renderer()); // FIXME: Manual style resolution is a hack
+    for (Node* n = firstChild(); n; n = n->nextSibling()) {
+        if (n->isSVGElement() && static_cast<SVGElement*>(n)->isStyledTransformable()) {
+            SVGStyledTransformableElement* styled = static_cast<SVGStyledTransformableElement*>(n);
+            RenderStyle* pathStyle = document()->styleSelector()->styleForElement(styled, clipPathStyle);
+            Path pathData = styled->toClipPath();
+            // FIXME: How do we know the element has done a layout?
+            pathData.transform(styled->animatedLocalTransform());
+            if (!pathData.isEmpty())
+                m_clipper->addClipData(pathData, pathStyle->svgStyle()->clipRule(), bbox);
+            pathStyle->deref(document()->renderArena());
+        }
+    }
+    if (m_clipper->clipData().isEmpty()) {
+        Path pathData;
+        pathData.addRect(FloatRect());
+        m_clipper->addClipData(pathData, RULE_EVENODD, bbox);
+    }
+    clipPathStyle->deref(document()->renderArena());
+    return m_clipper.get();
+}
+
+}
+
+#endif // ENABLE(SVG)