Add support for SVG Clip paths in HTML

Source/core/rendering/RenderLayerClipPathInfo.h

 /*
- * Copyright (C) 2009 Google Inc. All rights reserved.
+ * Copyright (c) 2014, Google Inc. All rights reserved.

[pdr., 2014/07/28 16:23:52]

Lets just leave this how it was instead of updating it. Samsung may like for you
to add a Samsung line here.

[f(malita), 2014/07/29 01:21:16]

This header is new, should be using the updated license template.

  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
  * copyright notice, this list of conditions and the following disclaimer
  * in the documentation and/or other materials provided with the
  * distribution.
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#ifndef RenderLayerClipPathInfo_h
+#define RenderLayerClipPathInfo_h
 
-#ifndef V8CustomXPathNSResolver_h
-#define V8CustomXPathNSResolver_h
-
-#include "core/xml/XPathNSResolver.h"
-#include "wtf/Forward.h"
+#include "core/dom/Element.h"

[Stephen White, 2014/07/29 15:26:18]

Nit: this #include is unnecessary (you'll get it via SVGClipPathElement, below).

[Shanmuga Pandi, 2014/08/01 05:20:39]

Done.

+#include "core/fetch/DocumentResource.h"
+#include "core/rendering/ClipPathOperation.h"

[Stephen White, 2014/07/29 15:26:18]

Looks like you could forward-declare ClipPathOperation instead of #including it
here (looks like RenderLayerFilterInfo.h has the same issues).

[Shanmuga Pandi, 2014/08/01 05:20:39]

Done.

+#include "core/svg/SVGClipPathElement.h"
 #include "wtf/RefPtr.h"
-#include <v8.h>
 
 namespace blink {
 
-// V8CustomXPathNSResolver does not create a persistent handle to the
-// given resolver object. So the lifetime of V8CustomXPathNSResolver
-// must not exceed the lifetime of the passed handle.
-class V8CustomXPathNSResolver FINAL : public XPathNSResolver {
+class RenderLayer;
+class RenderLayerClipPathInfo;
+
+typedef HashMap<const RenderLayer*, RenderLayerClipPathInfo*> RenderLayerClipPathInfoMap;
+
+class RenderLayerClipPathInfo FINAL : public DocumentResourceClient {
 public:
-    static PassRefPtrWillBeRawPtr<V8CustomXPathNSResolver> create(v8::Handle<v8::Object> resolver, v8::Isolate*);
+    static RenderLayerClipPathInfo* clipPathInfoForRenderLayer(const RenderLayer*);
+    static RenderLayerClipPathInfo* createClipPathInfoForRenderLayerIfNeeded(RenderLayer*);
+    static void removeClipPathInfoForRenderLayer(RenderLayer*);
 
-    virtual AtomicString lookupNamespaceURI(const String& prefix) OVERRIDE;
-
-    virtual void trace(Visitor*) OVERRIDE;
+    void updateReferenceClipPathClients(ClipPathOperation*);
+    void removeReferenceClipPathClients();
 
 private:
-    V8CustomXPathNSResolver(v8::Handle<v8::Object> resolver, v8::Isolate*);
+    RenderLayerClipPathInfo(RenderLayer*);
+    virtual ~RenderLayerClipPathInfo();
 
-    v8::Handle<v8::Object> m_resolver; // Handle to resolver object.
-    v8::Isolate* m_isolate;
+    RenderLayer* m_layer;
+
+    static RenderLayerClipPathInfoMap* s_clipPathMap;
+    RefPtr<SVGClipPathElement> m_clipPathElement;
 };
 
 } // namespace blink
 
-#endif // V8CustomXPathNSResolver_h
+#endif // RenderLayerClipPathInfo_h