1/* 2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. 3 * Copyright (C) 2013 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above 10 * copyright notice, this list of conditions and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above 13 * copyright notice, this list of conditions and the following 14 * disclaimer in the documentation and/or other materials 15 * provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE 21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 26 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include "config.h" 32 33#if ENABLE(CSS_FILTERS) 34#include "RenderLayerFilterInfo.h" 35 36#include "CachedSVGDocument.h" 37#include "CachedSVGDocumentReference.h" 38#include "FilterEffectRenderer.h" 39#include "SVGElement.h" 40#include "SVGFilter.h" 41#include "SVGFilterPrimitiveStandardAttributes.h" 42#include <wtf/NeverDestroyed.h> 43 44namespace WebCore { 45 46HashMap<const RenderLayer*, std::unique_ptr<RenderLayer::FilterInfo>>& RenderLayer::FilterInfo::map() 47{ 48 static NeverDestroyed<HashMap<const RenderLayer*, std::unique_ptr<FilterInfo>>> map; 49 return map; 50} 51 52RenderLayer::FilterInfo* RenderLayer::FilterInfo::getIfExists(const RenderLayer& layer) 53{ 54 ASSERT(layer.m_hasFilterInfo == map().contains(&layer)); 55 56 return layer.m_hasFilterInfo ? map().get(&layer) : 0; 57} 58 59RenderLayer::FilterInfo& RenderLayer::FilterInfo::get(RenderLayer& layer) 60{ 61 ASSERT(layer.m_hasFilterInfo == map().contains(&layer)); 62 63 auto& info = map().add(&layer, nullptr).iterator->value; 64 if (!info) { 65 info = std::make_unique<FilterInfo>(layer); 66 layer.m_hasFilterInfo = true; 67 } 68 return *info; 69} 70 71void RenderLayer::FilterInfo::remove(RenderLayer& layer) 72{ 73 ASSERT(layer.m_hasFilterInfo == map().contains(&layer)); 74 75 if (map().remove(&layer)) 76 layer.m_hasFilterInfo = false; 77} 78 79RenderLayer::FilterInfo::FilterInfo(RenderLayer& layer) 80 : m_layer(layer) 81{ 82} 83 84RenderLayer::FilterInfo::~FilterInfo() 85{ 86 removeReferenceFilterClients(); 87} 88 89void RenderLayer::FilterInfo::setRenderer(PassRefPtr<FilterEffectRenderer> renderer) 90{ 91 m_renderer = renderer; 92} 93 94void RenderLayer::FilterInfo::notifyFinished(CachedResource*) 95{ 96 m_layer.filterNeedsRepaint(); 97} 98 99void RenderLayer::FilterInfo::updateReferenceFilterClients(const FilterOperations& operations) 100{ 101 removeReferenceFilterClients(); 102 for (size_t i = 0, size = operations.size(); i < size; ++i) { 103 FilterOperation* filterOperation = operations.operations()[i].get(); 104 if (filterOperation->type() != FilterOperation::REFERENCE) 105 continue; 106 ReferenceFilterOperation* referenceFilterOperation = toReferenceFilterOperation(filterOperation); 107 CachedSVGDocumentReference* documentReference = referenceFilterOperation->cachedSVGDocumentReference(); 108 CachedSVGDocument* cachedSVGDocument = documentReference ? documentReference->document() : 0; 109 110 if (cachedSVGDocument) { 111 // Reference is external; wait for notifyFinished(). 112 cachedSVGDocument->addClient(this); 113 m_externalSVGReferences.append(cachedSVGDocument); 114 } else { 115 // Reference is internal; add layer as a client so we can trigger 116 // filter repaint on SVG attribute change. 117 Element* filter = m_layer.renderer().document().getElementById(referenceFilterOperation->fragment()); 118 119 if (!filter || !filter->renderer() || !filter->renderer()->isSVGResourceFilter()) 120 continue; 121 toRenderSVGResourceContainer(*filter->renderer()).addClientRenderLayer(&m_layer); 122 m_internalSVGReferences.append(filter); 123 } 124 } 125} 126 127void RenderLayer::FilterInfo::removeReferenceFilterClients() 128{ 129 for (size_t i = 0, size = m_externalSVGReferences.size(); i < size; ++i) 130 m_externalSVGReferences[i]->removeClient(this); 131 m_externalSVGReferences.clear(); 132 for (size_t i = 0, size = m_internalSVGReferences.size(); i < size; ++i) { 133 Element* filter = m_internalSVGReferences[i].get(); 134 if (!filter->renderer()) 135 continue; 136 toRenderSVGResourceContainer(*filter->renderer()).removeClientRenderLayer(&m_layer); 137 } 138 m_internalSVGReferences.clear(); 139} 140 141} // namespace WebCore 142 143#endif // ENABLE(CSS_FILTERS) 144