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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.
*/
#pragma once
#include "LegacyRenderSVGResourceClipper.h"
#include "LegacyRenderSVGResourceFilter.h"
#include "LegacyRenderSVGResourceMarker.h"
#include "LegacyRenderSVGResourceMasker.h"
#include <memory>
#include <wtf/HashSet.h>
#include <wtf/Noncopyable.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/WeakHashSet.h>
namespace WebCore {
class Document;
class LegacyRenderSVGResourceContainer;
class RenderElement;
class RenderObject;
class RenderStyle;
class LegacyRenderSVGRoot;
class SVGRenderStyle;
// Holds a set of resources associated with a RenderObject
class SVGResources {
WTF_MAKE_TZONE_ALLOCATED(SVGResources);
WTF_MAKE_NONCOPYABLE(SVGResources);
public:
SVGResources();
static std::unique_ptr<SVGResources> buildCachedResources(const RenderElement&, const RenderStyle&);
void layoutDifferentRootIfNeeded(const RenderElement& resourcesClient);
bool markerReverseStart() const;
// Ordinary resources
LegacyRenderSVGResourceClipper* clipper() const { return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->clipper.get() : nullptr; }
LegacyRenderSVGResourceMasker* masker() const { return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->masker.get() : nullptr; }
LegacyRenderSVGResourceFilter* filter() const { return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->filter.get() : nullptr; }
LegacyRenderSVGResourceMarker* markerStart() const { return m_markerData ? m_markerData->markerStart.get() : nullptr; }
LegacyRenderSVGResourceMarker* markerMid() const { return m_markerData ? m_markerData->markerMid.get() : nullptr; }
LegacyRenderSVGResourceMarker* markerEnd() const { return m_markerData ? m_markerData->markerEnd.get() : nullptr; }
// Paint servers
LegacyRenderSVGResourceContainer* fill() const { return m_fillStrokeData ? m_fillStrokeData->fill.get() : nullptr; }
LegacyRenderSVGResourceContainer* stroke() const { return m_fillStrokeData ? m_fillStrokeData->stroke.get() : nullptr; }
// Chainable resources - linked through xlink:href
LegacyRenderSVGResourceContainer* linkedResource() const { return m_linkedResource.get(); }
void buildSetOfResources(SingleThreadWeakHashSet<LegacyRenderSVGResourceContainer>&);
// Methods operating on all cached resources
void removeClientFromCache(RenderElement&, bool markForInvalidation = true) const;
// Returns true if the resource-to-be-destroyed is one of our resources.
bool resourceDestroyed(LegacyRenderSVGResourceContainer&);
#if ENABLE(TREE_DEBUGGING)
void dump(const RenderObject*);
#endif
private:
friend class SVGResourcesCycleSolver;
// Only used by SVGResourcesCache cycle detection logic
void resetClipper();
void resetFilter();
void resetMarkerStart();
void resetMarkerMid();
void resetMarkerEnd();
void resetMasker();
void resetFill();
void resetStroke();
void resetLinkedResource();
private:
bool setClipper(LegacyRenderSVGResourceClipper*);
bool setFilter(LegacyRenderSVGResourceFilter*);
bool setMarkerStart(LegacyRenderSVGResourceMarker*);
bool setMarkerMid(LegacyRenderSVGResourceMarker*);
bool setMarkerEnd(LegacyRenderSVGResourceMarker*);
bool setMasker(LegacyRenderSVGResourceMasker*);
bool setFill(LegacyRenderSVGResourceContainer*);
bool setStroke(LegacyRenderSVGResourceContainer*);
bool setLinkedResource(LegacyRenderSVGResourceContainer*);
bool isEmpty() const { return !m_clipperFilterMaskerData && !m_markerData && !m_fillStrokeData && !m_linkedResource; }
// From SVG 1.1 2nd Edition
// clipper: 'container elements' and 'graphics elements'
// filter: 'container elements' and 'graphics elements'
// masker: 'container elements' and 'graphics elements'
// -> a, circle, defs, ellipse, glyph, g, image, line, marker, mask, missing-glyph, path, pattern, polygon, polyline, rect, svg, switch, symbol, text, use
struct ClipperFilterMaskerData {
WTF_MAKE_TZONE_ALLOCATED_INLINE(ClipperFilterMaskerData);
public:
ClipperFilterMaskerData() = default;
SingleThreadWeakPtr<LegacyRenderSVGResourceClipper> clipper;
SingleThreadWeakPtr<LegacyRenderSVGResourceFilter> filter;
SingleThreadWeakPtr<LegacyRenderSVGResourceMasker> masker;
};
// From SVG 1.1 2nd Edition
// marker: line, path, polygon, polyline
struct MarkerData {
WTF_MAKE_TZONE_ALLOCATED_INLINE(MarkerData);
public:
MarkerData() = default;
SingleThreadWeakPtr<LegacyRenderSVGResourceMarker> markerStart;
SingleThreadWeakPtr<LegacyRenderSVGResourceMarker> markerMid;
SingleThreadWeakPtr<LegacyRenderSVGResourceMarker> markerEnd;
};
// From SVG 1.1 2nd Edition
// fill: 'shapes' and 'text content elements'
// stroke: 'shapes' and 'text content elements'
// -> altGlyph, circle, ellipse, line, path, polygon, polyline, rect, text, textPath, tref, tspan
struct FillStrokeData {
WTF_MAKE_TZONE_ALLOCATED_INLINE(FillStrokeData);
public:
FillStrokeData() = default;
SingleThreadWeakPtr<LegacyRenderSVGResourceContainer> fill;
SingleThreadWeakPtr<LegacyRenderSVGResourceContainer> stroke;
};
std::unique_ptr<ClipperFilterMaskerData> m_clipperFilterMaskerData;
std::unique_ptr<MarkerData> m_markerData;
std::unique_ptr<FillStrokeData> m_fillStrokeData;
SingleThreadWeakPtr<LegacyRenderSVGResourceContainer> m_linkedResource;
bool m_inLayoutForDifferentRoot { false };
};
} // namespace WebCore
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