1 /*
2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include "config.h"
31
32 #include "core/rendering/RenderLayerFilterInfo.h"
33
34 #include "core/fetch/DocumentResourceReference.h"
35 #include "core/rendering/FilterEffectRenderer.h"
36 #include "core/rendering/RenderLayer.h"
37 #include "core/rendering/svg/ReferenceFilterBuilder.h"
38 #include "core/rendering/svg/RenderSVGResourceContainer.h"
39 #include "core/svg/SVGFilterElement.h"
40 #include "core/svg/SVGFilterPrimitiveStandardAttributes.h"
41 #include "core/svg/graphics/filters/SVGFilter.h"
42 #include "platform/graphics/filters/custom/CustomFilterOperation.h"
43 #include "platform/graphics/filters/custom/CustomFilterProgram.h"
44
45 namespace WebCore {
46
47 RenderLayerFilterInfoMap* RenderLayerFilterInfo::s_filterMap = 0;
48
filterInfoForRenderLayer(const RenderLayer * layer)49 RenderLayerFilterInfo* RenderLayerFilterInfo::filterInfoForRenderLayer(const RenderLayer* layer)
50 {
51 if (!s_filterMap)
52 return 0;
53 RenderLayerFilterInfoMap::iterator iter = s_filterMap->find(layer);
54 return (iter != s_filterMap->end()) ? iter->value : 0;
55 }
56
createFilterInfoForRenderLayerIfNeeded(RenderLayer * layer)57 RenderLayerFilterInfo* RenderLayerFilterInfo::createFilterInfoForRenderLayerIfNeeded(RenderLayer* layer)
58 {
59 if (!s_filterMap)
60 s_filterMap = new RenderLayerFilterInfoMap();
61
62 RenderLayerFilterInfoMap::iterator iter = s_filterMap->find(layer);
63 if (iter != s_filterMap->end()) {
64 ASSERT(layer->hasFilterInfo());
65 return iter->value;
66 }
67
68 RenderLayerFilterInfo* filter = new RenderLayerFilterInfo(layer);
69 s_filterMap->set(layer, filter);
70 layer->setHasFilterInfo(true);
71 return filter;
72 }
73
removeFilterInfoForRenderLayer(RenderLayer * layer)74 void RenderLayerFilterInfo::removeFilterInfoForRenderLayer(RenderLayer* layer)
75 {
76 if (!s_filterMap)
77 return;
78 RenderLayerFilterInfo* filter = s_filterMap->take(layer);
79 if (s_filterMap->isEmpty()) {
80 delete s_filterMap;
81 s_filterMap = 0;
82 }
83 if (!filter) {
84 ASSERT(!layer->hasFilterInfo());
85 return;
86 }
87 layer->setHasFilterInfo(false);
88 delete filter;
89 }
90
RenderLayerFilterInfo(RenderLayer * layer)91 RenderLayerFilterInfo::RenderLayerFilterInfo(RenderLayer* layer)
92 : m_layer(layer)
93 {
94 }
95
~RenderLayerFilterInfo()96 RenderLayerFilterInfo::~RenderLayerFilterInfo()
97 {
98 removeCustomFilterClients();
99 removeReferenceFilterClients();
100 }
101
setRenderer(PassRefPtr<FilterEffectRenderer> renderer)102 void RenderLayerFilterInfo::setRenderer(PassRefPtr<FilterEffectRenderer> renderer)
103 {
104 m_renderer = renderer;
105 }
106
notifyFinished(Resource *)107 void RenderLayerFilterInfo::notifyFinished(Resource*)
108 {
109 RenderObject* renderer = m_layer->renderer();
110 toElement(renderer->node())->scheduleLayerUpdate();
111 renderer->repaint();
112 }
113
updateReferenceFilterClients(const FilterOperations & operations)114 void RenderLayerFilterInfo::updateReferenceFilterClients(const FilterOperations& operations)
115 {
116 removeReferenceFilterClients();
117 for (size_t i = 0; i < operations.size(); ++i) {
118 RefPtr<FilterOperation> filterOperation = operations.operations().at(i);
119 if (filterOperation->type() != FilterOperation::REFERENCE)
120 continue;
121 ReferenceFilterOperation* referenceFilterOperation = toReferenceFilterOperation(filterOperation.get());
122 DocumentResourceReference* documentReference = ReferenceFilterBuilder::documentResourceReference(referenceFilterOperation);
123 DocumentResource* cachedSVGDocument = documentReference ? documentReference->document() : 0;
124
125 if (cachedSVGDocument) {
126 // Reference is external; wait for notifyFinished().
127 cachedSVGDocument->addClient(this);
128 m_externalSVGReferences.append(cachedSVGDocument);
129 } else {
130 // Reference is internal; add layer as a client so we can trigger
131 // filter repaint on SVG attribute change.
132 Element* filter = m_layer->renderer()->node()->document().getElementById(referenceFilterOperation->fragment());
133 if (!filter || !filter->hasTagName(SVGNames::filterTag))
134 continue;
135 if (filter->renderer())
136 toRenderSVGResourceContainer(filter->renderer())->addClientRenderLayer(m_layer);
137 else
138 toSVGFilterElement(filter)->addClient(m_layer->renderer()->node());
139 m_internalSVGReferences.append(filter);
140 }
141 }
142 }
143
removeReferenceFilterClients()144 void RenderLayerFilterInfo::removeReferenceFilterClients()
145 {
146 for (size_t i = 0; i < m_externalSVGReferences.size(); ++i)
147 m_externalSVGReferences.at(i)->removeClient(this);
148 m_externalSVGReferences.clear();
149 for (size_t i = 0; i < m_internalSVGReferences.size(); ++i) {
150 Element* filter = m_internalSVGReferences.at(i).get();
151 if (filter->renderer())
152 toRenderSVGResourceContainer(filter->renderer())->removeClientRenderLayer(m_layer);
153 else
154 toSVGFilterElement(filter)->removeClient(m_layer->renderer()->node());
155 }
156 m_internalSVGReferences.clear();
157 }
158
notifyCustomFilterProgramLoaded(CustomFilterProgram *)159 void RenderLayerFilterInfo::notifyCustomFilterProgramLoaded(CustomFilterProgram*)
160 {
161 RenderObject* renderer = m_layer->renderer();
162 toElement(renderer->node())->scheduleLayerUpdate();
163 renderer->repaint();
164 }
165
updateCustomFilterClients(const FilterOperations & operations)166 void RenderLayerFilterInfo::updateCustomFilterClients(const FilterOperations& operations)
167 {
168 if (!operations.size()) {
169 removeCustomFilterClients();
170 return;
171 }
172 CustomFilterProgramList cachedCustomFilterPrograms;
173 for (size_t i = 0; i < operations.size(); ++i) {
174 const FilterOperation* filterOperation = operations.at(i);
175 if (filterOperation->type() != FilterOperation::CUSTOM)
176 continue;
177 RefPtr<CustomFilterProgram> program = toCustomFilterOperation(filterOperation)->program();
178 cachedCustomFilterPrograms.append(program);
179 program->addClient(this);
180 }
181 // Remove the old clients here, after we've added the new ones, so that we don't flicker if some shaders are unchanged.
182 removeCustomFilterClients();
183 m_cachedCustomFilterPrograms.swap(cachedCustomFilterPrograms);
184 }
185
removeCustomFilterClients()186 void RenderLayerFilterInfo::removeCustomFilterClients()
187 {
188 for (size_t i = 0; i < m_cachedCustomFilterPrograms.size(); ++i)
189 m_cachedCustomFilterPrograms.at(i)->removeClient(this);
190 m_cachedCustomFilterPrograms.clear();
191 }
192
193 } // namespace WebCore
194
195