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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 SVGResources_h
#define SVGResources_h
#include "wtf/Allocator.h"
#include "wtf/HashSet.h"
#include "wtf/Noncopyable.h"
#include "wtf/PtrUtil.h"
#include <memory>
namespace blink {
class ComputedStyle;
class LayoutObject;
class LayoutSVGResourceClipper;
class LayoutSVGResourceContainer;
class LayoutSVGResourceFilter;
class LayoutSVGResourceMarker;
class LayoutSVGResourceMasker;
class LayoutSVGResourcePaintServer;
class SVGElement;
// Holds a set of resources associated with a LayoutObject
class SVGResources {
WTF_MAKE_NONCOPYABLE(SVGResources);
USING_FAST_MALLOC(SVGResources);
public:
SVGResources();
static std::unique_ptr<SVGResources> buildResources(const LayoutObject*,
const ComputedStyle&);
void layoutIfNeeded();
static bool supportsMarkers(const SVGElement&);
// Ordinary resources
LayoutSVGResourceClipper* clipper() const {
return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->clipper : 0;
}
LayoutSVGResourceMarker* markerStart() const {
return m_markerData ? m_markerData->markerStart : 0;
}
LayoutSVGResourceMarker* markerMid() const {
return m_markerData ? m_markerData->markerMid : 0;
}
LayoutSVGResourceMarker* markerEnd() const {
return m_markerData ? m_markerData->markerEnd : 0;
}
LayoutSVGResourceMasker* masker() const {
return m_clipperFilterMaskerData ? m_clipperFilterMaskerData->masker : 0;
}
LayoutSVGResourceFilter* filter() const {
if (m_clipperFilterMaskerData)
return m_clipperFilterMaskerData->filter;
return nullptr;
}
// Paint servers
LayoutSVGResourcePaintServer* fill() const {
return m_fillStrokeData ? m_fillStrokeData->fill : 0;
}
LayoutSVGResourcePaintServer* stroke() const {
return m_fillStrokeData ? m_fillStrokeData->stroke : 0;
}
// Chainable resources - linked through xlink:href
LayoutSVGResourceContainer* linkedResource() const {
return m_linkedResource;
}
void buildSetOfResources(HashSet<LayoutSVGResourceContainer*>&);
// Methods operating on all cached resources
void removeClientFromCache(LayoutObject*,
bool markForInvalidation = true) const;
void removeClientFromCacheAffectingObjectBounds(
LayoutObject*,
bool markForInvalidation = true) const;
void resourceDestroyed(LayoutSVGResourceContainer*);
#ifndef NDEBUG
void dump(const LayoutObject*);
#endif
private:
friend class SVGResourcesCycleSolver;
bool hasResourceData() const;
// 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();
bool setClipper(LayoutSVGResourceClipper*);
bool setFilter(LayoutSVGResourceFilter*);
bool setMarkerStart(LayoutSVGResourceMarker*);
bool setMarkerMid(LayoutSVGResourceMarker*);
bool setMarkerEnd(LayoutSVGResourceMarker*);
bool setMasker(LayoutSVGResourceMasker*);
bool setFill(LayoutSVGResourcePaintServer*);
bool setStroke(LayoutSVGResourcePaintServer*);
bool setLinkedResource(LayoutSVGResourceContainer*);
// 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 {
USING_FAST_MALLOC(ClipperFilterMaskerData);
public:
ClipperFilterMaskerData()
: clipper(nullptr), filter(nullptr), masker(nullptr) {}
static std::unique_ptr<ClipperFilterMaskerData> create() {
return WTF::wrapUnique(new ClipperFilterMaskerData);
}
LayoutSVGResourceClipper* clipper;
LayoutSVGResourceFilter* filter;
LayoutSVGResourceMasker* masker;
};
// From SVG 1.1 2nd Edition
// marker: line, path, polygon, polyline
struct MarkerData {
USING_FAST_MALLOC(MarkerData);
public:
MarkerData()
: markerStart(nullptr), markerMid(nullptr), markerEnd(nullptr) {}
static std::unique_ptr<MarkerData> create() {
return WTF::wrapUnique(new MarkerData);
}
LayoutSVGResourceMarker* markerStart;
LayoutSVGResourceMarker* markerMid;
LayoutSVGResourceMarker* markerEnd;
};
// From SVG 1.1 2nd Edition
// fill: 'shapes' and 'text content elements'
// stroke: 'shapes' and 'text content elements'
// -> circle, ellipse, line, path, polygon, polyline, rect, text, textPath,
// tspan
struct FillStrokeData {
USING_FAST_MALLOC(FillStrokeData);
public:
FillStrokeData() : fill(nullptr), stroke(nullptr) {}
static std::unique_ptr<FillStrokeData> create() {
return WTF::wrapUnique(new FillStrokeData);
}
LayoutSVGResourcePaintServer* fill;
LayoutSVGResourcePaintServer* stroke;
};
std::unique_ptr<ClipperFilterMaskerData> m_clipperFilterMaskerData;
std::unique_ptr<MarkerData> m_markerData;
std::unique_ptr<FillStrokeData> m_fillStrokeData;
LayoutSVGResourceContainer* m_linkedResource;
};
} // namespace blink
#endif
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