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/*
* 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.
*/
#ifndef LayoutSVGResourceContainer_h
#define LayoutSVGResourceContainer_h
#include "core/layout/svg/LayoutSVGHiddenContainer.h"
#include "core/svg/SVGDocumentExtensions.h"
namespace blink {
class SVGElementProxySet;
enum LayoutSVGResourceType {
MaskerResourceType,
MarkerResourceType,
PatternResourceType,
LinearGradientResourceType,
RadialGradientResourceType,
FilterResourceType,
ClipperResourceType
};
class LayoutSVGResourceContainer : public LayoutSVGHiddenContainer {
public:
explicit LayoutSVGResourceContainer(SVGElement*);
~LayoutSVGResourceContainer() override;
virtual void removeAllClientsFromCache(bool markForInvalidation = true) = 0;
virtual void removeClientFromCache(LayoutObject*,
bool markForInvalidation = true) = 0;
void layout() override;
void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) final;
bool isOfType(LayoutObjectType type) const override {
return type == LayoutObjectSVGResourceContainer ||
LayoutSVGHiddenContainer::isOfType(type);
}
virtual LayoutSVGResourceType resourceType() const = 0;
bool isSVGPaintServer() const {
LayoutSVGResourceType resourceType = this->resourceType();
return resourceType == PatternResourceType ||
resourceType == LinearGradientResourceType ||
resourceType == RadialGradientResourceType;
}
void idChanged();
void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = nullptr);
static void markForLayoutAndParentResourceInvalidation(
LayoutObject*,
bool needsLayout = true);
void clearInvalidationMask() { m_invalidationMask = 0; }
protected:
// When adding modes, make sure we don't overflow m_invalidationMask below.
enum InvalidationMode {
LayoutAndBoundariesInvalidation = 1 << 0,
BoundariesInvalidation = 1 << 1,
PaintInvalidation = 1 << 2,
ParentOnlyInvalidation = 1 << 3
};
// Used from the invalidateClient/invalidateClients methods from classes,
// inheriting from us.
void markAllClientsForInvalidation(InvalidationMode);
void markClientForInvalidation(LayoutObject*, InvalidationMode);
void notifyContentChanged();
SVGElementProxySet* elementProxySet();
void willBeDestroyed() override;
bool m_isInLayout;
private:
friend class SVGResourcesCache;
void addClient(LayoutObject*);
void removeClient(LayoutObject*);
void detachAllClients();
void registerResource();
AtomicString m_id;
// Track global (markAllClientsForInvalidation) invals to avoid redundant
// crawls.
unsigned m_invalidationMask : 8;
unsigned m_registered : 1;
unsigned m_isInvalidating : 1;
// 22 padding bits available
HashSet<LayoutObject*> m_clients;
};
inline LayoutSVGResourceContainer* getLayoutSVGResourceContainerById(
TreeScope& treeScope,
const AtomicString& id) {
if (id.isEmpty())
return nullptr;
if (LayoutSVGResourceContainer* layoutResource =
treeScope.document().accessSVGExtensions().resourceById(id))
return layoutResource;
return nullptr;
}
template <typename Layout>
Layout* getLayoutSVGResourceById(TreeScope& treeScope, const AtomicString& id) {
if (LayoutSVGResourceContainer* container =
getLayoutSVGResourceContainerById(treeScope, id)) {
if (container->resourceType() == Layout::s_resourceType)
return static_cast<Layout*>(container);
}
return nullptr;
}
DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGResourceContainer,
isSVGResourceContainer());
#define DEFINE_LAYOUT_SVG_RESOURCE_TYPE_CASTS(thisType, typeName) \
DEFINE_TYPE_CASTS(thisType, LayoutSVGResourceContainer, resource, \
resource->resourceType() == typeName, \
resource.resourceType() == typeName)
} // namespace blink
#endif
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