1 /* 2 * Copyright (C) 2006 Apple Inc. All rights reserved. 3 * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef SVGDocumentExtensions_h 22 #define SVGDocumentExtensions_h 23 24 #include "platform/geometry/FloatPoint.h" 25 #include "platform/heap/Handle.h" 26 #include "wtf/Forward.h" 27 #include "wtf/HashMap.h" 28 #include "wtf/HashSet.h" 29 #include "wtf/text/AtomicStringHash.h" 30 31 namespace blink { 32 33 class Document; 34 class RenderSVGResourceContainer; 35 class SubtreeLayoutScope; 36 #if ENABLE(SVG_FONTS) 37 class SVGFontFaceElement; 38 #endif 39 class SVGResourcesCache; 40 class SVGSVGElement; 41 class Element; 42 43 class SVGDocumentExtensions : public NoBaseWillBeGarbageCollectedFinalized<SVGDocumentExtensions> { 44 WTF_MAKE_NONCOPYABLE(SVGDocumentExtensions); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; 45 public: 46 typedef WillBeHeapHashSet<RawPtrWillBeMember<Element> > SVGPendingElements; 47 explicit SVGDocumentExtensions(Document*); 48 ~SVGDocumentExtensions(); 49 50 void addTimeContainer(SVGSVGElement*); 51 void removeTimeContainer(SVGSVGElement*); 52 53 void addResource(const AtomicString& id, RenderSVGResourceContainer*); 54 void removeResource(const AtomicString& id); 55 RenderSVGResourceContainer* resourceById(const AtomicString& id) const; 56 57 static void serviceOnAnimationFrame(Document&, double monotonicAnimationStartTime); 58 59 void startAnimations(); 60 void pauseAnimations(); 61 void dispatchSVGLoadEventToOutermostSVGElements(); 62 63 void reportWarning(const String&); 64 void reportError(const String&); 65 resourcesCache()66 SVGResourcesCache* resourcesCache() const { return m_resourcesCache.get(); } 67 68 void addSVGRootWithRelativeLengthDescendents(SVGSVGElement*); 69 void removeSVGRootWithRelativeLengthDescendents(SVGSVGElement*); 70 bool isSVGRootWithRelativeLengthDescendents(SVGSVGElement*) const; 71 void invalidateSVGRootsWithRelativeLengthDescendents(SubtreeLayoutScope*); 72 73 #if ENABLE(SVG_FONTS) svgFontFaceElements()74 const WillBeHeapHashSet<RawPtrWillBeMember<SVGFontFaceElement> >& svgFontFaceElements() const { return m_svgFontFaceElements; } 75 void registerSVGFontFaceElement(SVGFontFaceElement*); 76 void unregisterSVGFontFaceElement(SVGFontFaceElement*); 77 78 void registerPendingSVGFontFaceElementsForRemoval(PassRefPtrWillBeRawPtr<SVGFontFaceElement>); 79 void removePendingSVGFontFaceElementsForRemoval(); 80 #endif 81 82 bool zoomAndPanEnabled() const; 83 84 void startPan(const FloatPoint& start); 85 void updatePan(const FloatPoint& pos) const; 86 87 static SVGSVGElement* rootElement(const Document&); 88 SVGSVGElement* rootElement() const; 89 90 void trace(Visitor*); 91 92 private: 93 RawPtrWillBeMember<Document> m_document; 94 WillBeHeapHashSet<RawPtrWillBeMember<SVGSVGElement> > m_timeContainers; // For SVG 1.2 support this will need to be made more general. 95 #if ENABLE(SVG_FONTS) 96 WillBeHeapHashSet<RawPtrWillBeMember<SVGFontFaceElement> > m_svgFontFaceElements; 97 // SVGFontFaceElements that are pending and scheduled for removal. 98 WillBeHeapHashSet<RefPtrWillBeMember<SVGFontFaceElement> > m_pendingSVGFontFaceElementsForRemoval; 99 #endif 100 HashMap<AtomicString, RenderSVGResourceContainer*> m_resources; 101 WillBeHeapHashMap<AtomicString, OwnPtrWillBeMember<SVGPendingElements> > m_pendingResources; // Resources that are pending. 102 WillBeHeapHashMap<AtomicString, OwnPtrWillBeMember<SVGPendingElements> > m_pendingResourcesForRemoval; // Resources that are pending and scheduled for removal. 103 OwnPtr<SVGResourcesCache> m_resourcesCache; 104 WillBeHeapHashSet<RawPtrWillBeMember<SVGSVGElement> > m_relativeLengthSVGRoots; // Root SVG elements with relative length descendants. 105 FloatPoint m_translate; 106 #if ENABLE(ASSERT) 107 bool m_inRelativeLengthSVGRootsInvalidation; 108 #endif 109 110 public: 111 // This HashMap contains a list of pending resources. Pending resources, are such 112 // which are referenced by any object in the SVG document, but do NOT exist yet. 113 // For instance, dynamically build gradients / patterns / clippers... 114 void addPendingResource(const AtomicString& id, Element*); 115 bool hasPendingResource(const AtomicString& id) const; 116 bool isElementPendingResources(Element*) const; 117 bool isElementPendingResource(Element*, const AtomicString& id) const; 118 void clearHasPendingResourcesIfPossible(Element*); 119 void removeElementFromPendingResources(Element*); 120 PassOwnPtrWillBeRawPtr<SVGPendingElements> removePendingResource(const AtomicString& id); 121 122 void serviceAnimations(double monotonicAnimationStartTime); 123 124 // The following two functions are used for scheduling a pending resource to be removed. 125 void markPendingResourcesForRemoval(const AtomicString&); 126 Element* removeElementFromPendingResourcesForRemoval(const AtomicString&); 127 128 private: 129 PassOwnPtrWillBeRawPtr<SVGPendingElements> removePendingResourceForRemoval(const AtomicString&); 130 }; 131 132 } 133 134 #endif 135