1 files changed, 182 insertions, 0 deletions
diff --git a/WebCore/svg/graphics/SVGResource.cpp b/WebCore/svg/graphics/SVGResource.cpp
new file mode 100644
index 0000000..10d6648
--- /dev/null
+++ b/WebCore/svg/graphics/SVGResource.cpp
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 
+ */
+
+#include "config.h"
+
+#if ENABLE(SVG)
+#include "SVGResource.h"
+
+#include "RenderPath.h"
+#include "SVGElement.h"
+#include "SVGStyledElement.h"
+
+namespace WebCore {
+
+SVGResource::SVGResource()
+{
+}
+
+struct ResourceSet { 
+    ResourceSet() 
+    {
+        for (int i = 0; i < _ResourceTypeCount; i++)
+            resources[i] = 0;
+    }
+    SVGResource* resources[_ResourceTypeCount]; 
+};
+
+static HashMap<SVGStyledElement*, ResourceSet*>& clientMap() {
+    static HashMap<SVGStyledElement*, ResourceSet*> map;
+    return map;
+}
+
+SVGResource::~SVGResource()
+{
+    int type = -1;
+    HashSet<SVGStyledElement*>::iterator itr = m_clients.begin();
+    
+    for (; type < 0 && itr != m_clients.end(); ++itr) {
+        ResourceSet* target = clientMap().get(*itr);
+        if (!target)
+            continue;
+
+        for (int i = 0; i < _ResourceTypeCount; i++) {
+            if (target->resources[i] != this) 
+                continue;
+            type = i;
+            target->resources[i] = 0;
+            break;
+        }
+    }
+    
+    if (type < 0)
+        return;
+    
+    for (; itr != m_clients.end(); ++itr) {
+        ResourceSet* target = clientMap().get(*itr);
+        if (!target)
+            continue;
+        
+        if (target->resources[type] == this) 
+            target->resources[type] = 0;
+    }
+}
+
+void SVGResource::invalidate()
+{
+    HashSet<SVGStyledElement*>::const_iterator it = m_clients.begin();
+    const HashSet<SVGStyledElement*>::const_iterator end = m_clients.end();
+
+    for (; it != end; ++it) {
+        SVGStyledElement* cur = *it;
+
+        if (cur->renderer())
+            cur->renderer()->setNeedsLayout(true);
+
+        cur->invalidateResourcesInAncestorChain();
+    }
+}
+
+void SVGResource::invalidateClients(HashSet<SVGStyledElement*> clients)
+{
+    HashSet<SVGStyledElement*>::const_iterator it = clients.begin();
+    const HashSet<SVGStyledElement*>::const_iterator end = clients.end();
+
+    for (; it != end; ++it) {
+        SVGStyledElement* cur = *it;
+
+        if (cur->renderer())
+            cur->renderer()->setNeedsLayout(true);
+
+        cur->invalidateResourcesInAncestorChain();
+    }
+}
+
+void SVGResource::removeClient(SVGStyledElement* item) 
+{
+    HashMap<SVGStyledElement*, ResourceSet*>::iterator resourcePtr = clientMap().find(item);
+    if (resourcePtr == clientMap().end())
+        return;
+    
+    ResourceSet* set = resourcePtr->second;
+    ASSERT(set);
+    
+    clientMap().remove(resourcePtr);
+    
+    for (int i = 0; i < _ResourceTypeCount; i++)
+        if (set->resources[i])
+            set->resources[i]->m_clients.remove(item);
+    
+    delete set;
+}
+
+void SVGResource::addClient(SVGStyledElement* item)
+{
+    if (m_clients.contains(item))
+        return;
+
+    m_clients.add(item);
+
+    ResourceSet* target = clientMap().get(item);
+    if (!target) 
+        target = new ResourceSet;
+
+    SVGResourceType type = resourceType();
+    if (SVGResource* oldResource = target->resources[type])
+        oldResource->m_clients.remove(item);
+
+    target->resources[type] = this;
+    clientMap().set(item, target);
+}
+
+TextStream& SVGResource::externalRepresentation(TextStream& ts) const
+{
+    return ts;
+}
+
+SVGResource* getResourceById(Document* document, const AtomicString& id)
+{
+    if (id.isEmpty())
+        return 0;
+
+    Element* element = document->getElementById(id);
+    SVGElement* svgElement = 0;
+    if (element && element->isSVGElement())
+        svgElement = static_cast<SVGElement*>(element);
+
+    if (svgElement && svgElement->isStyled())
+        return static_cast<SVGStyledElement*>(svgElement)->canvasResource();
+
+    return 0;
+}
+
+TextStream& operator<<(TextStream& ts, const SVGResource& r)
+{
+    return r.externalRepresentation(ts);
+}
+
+}
+
+#endif