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/*
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "config.h"
#include "core/rendering/RenderLayerFilterInfo.h"
#include "core/loader/cache/DocumentResource.h"
#include "core/loader/cache/DocumentResourceReference.h"
#include "core/platform/graphics/filters/custom/CustomFilterOperation.h"
#include "core/platform/graphics/filters/custom/CustomFilterProgram.h"
#include "core/rendering/FilterEffectRenderer.h"
#include "core/rendering/RenderLayer.h"
#include "core/rendering/svg/RenderSVGResourceContainer.h"
#include "core/svg/SVGElement.h"
#include "core/svg/SVGFilterPrimitiveStandardAttributes.h"
#include "core/svg/graphics/filters/SVGFilter.h"
namespace WebCore {
RenderLayerFilterInfoMap* RenderLayerFilterInfo::s_filterMap = 0;
RenderLayerFilterInfo* RenderLayerFilterInfo::filterInfoForRenderLayer(const RenderLayer* layer)
{
if (!s_filterMap)
return 0;
RenderLayerFilterInfoMap::iterator iter = s_filterMap->find(layer);
return (iter != s_filterMap->end()) ? iter->value : 0;
}
RenderLayerFilterInfo* RenderLayerFilterInfo::createFilterInfoForRenderLayerIfNeeded(RenderLayer* layer)
{
if (!s_filterMap)
s_filterMap = new RenderLayerFilterInfoMap();
RenderLayerFilterInfoMap::iterator iter = s_filterMap->find(layer);
if (iter != s_filterMap->end()) {
ASSERT(layer->hasFilterInfo());
return iter->value;
}
RenderLayerFilterInfo* filter = new RenderLayerFilterInfo(layer);
s_filterMap->set(layer, filter);
layer->setHasFilterInfo(true);
return filter;
}
void RenderLayerFilterInfo::removeFilterInfoForRenderLayer(RenderLayer* layer)
{
if (!s_filterMap)
return;
RenderLayerFilterInfo* filter = s_filterMap->take(layer);
if (s_filterMap->isEmpty()) {
delete s_filterMap;
s_filterMap = 0;
}
if (!filter) {
ASSERT(!layer->hasFilterInfo());
return;
}
layer->setHasFilterInfo(false);
delete filter;
}
RenderLayerFilterInfo::RenderLayerFilterInfo(RenderLayer* layer)
: m_layer(layer)
{
}
RenderLayerFilterInfo::~RenderLayerFilterInfo()
{
removeCustomFilterClients();
removeReferenceFilterClients();
}
void RenderLayerFilterInfo::setRenderer(PassRefPtr<FilterEffectRenderer> renderer)
{
m_renderer = renderer;
}
void RenderLayerFilterInfo::notifyFinished(Resource*)
{
RenderObject* renderer = m_layer->renderer();
toElement(renderer->node())->scheduleLayerUpdate();
renderer->repaint();
}
void RenderLayerFilterInfo::updateReferenceFilterClients(const FilterOperations& operations)
{
removeReferenceFilterClients();
for (size_t i = 0; i < operations.size(); ++i) {
RefPtr<FilterOperation> filterOperation = operations.operations().at(i);
if (filterOperation->getOperationType() != FilterOperation::REFERENCE)
continue;
ReferenceFilterOperation* referenceFilterOperation = static_cast<ReferenceFilterOperation*>(filterOperation.get());
DocumentResourceReference* documentReference = referenceFilterOperation->documentResourceReference();
DocumentResource* cachedSVGDocument = documentReference ? documentReference->document() : 0;
if (cachedSVGDocument) {
// Reference is external; wait for notifyFinished().
cachedSVGDocument->addClient(this);
m_externalSVGReferences.append(cachedSVGDocument);
} else {
// Reference is internal; add layer as a client so we can trigger
// filter repaint on SVG attribute change.
Element* filter = m_layer->renderer()->node()->document()->getElementById(referenceFilterOperation->fragment());
if (!filter || !filter->renderer() || !filter->renderer()->isSVGResourceFilter())
continue;
filter->renderer()->toRenderSVGResourceContainer()->addClientRenderLayer(m_layer);
m_internalSVGReferences.append(filter);
}
}
}
void RenderLayerFilterInfo::removeReferenceFilterClients()
{
for (size_t i = 0; i < m_externalSVGReferences.size(); ++i)
m_externalSVGReferences.at(i)->removeClient(this);
m_externalSVGReferences.clear();
for (size_t i = 0; i < m_internalSVGReferences.size(); ++i) {
Element* filter = m_internalSVGReferences.at(i).get();
if (!filter->renderer())
continue;
filter->renderer()->toRenderSVGResourceContainer()->removeClientRenderLayer(m_layer);
}
m_internalSVGReferences.clear();
}
void RenderLayerFilterInfo::notifyCustomFilterProgramLoaded(CustomFilterProgram*)
{
RenderObject* renderer = m_layer->renderer();
toElement(renderer->node())->scheduleLayerUpdate();
renderer->repaint();
}
void RenderLayerFilterInfo::updateCustomFilterClients(const FilterOperations& operations)
{
if (!operations.size()) {
removeCustomFilterClients();
return;
}
CustomFilterProgramList cachedCustomFilterPrograms;
for (size_t i = 0; i < operations.size(); ++i) {
const FilterOperation* filterOperation = operations.at(i);
if (filterOperation->getOperationType() != FilterOperation::CUSTOM)
continue;
const CustomFilterOperation* customFilterOperation = static_cast<const CustomFilterOperation*>(filterOperation);
RefPtr<CustomFilterProgram> program = customFilterOperation->program();
cachedCustomFilterPrograms.append(program);
program->addClient(this);
}
// Remove the old clients here, after we've added the new ones, so that we don't flicker if some shaders are unchanged.
removeCustomFilterClients();
m_cachedCustomFilterPrograms.swap(cachedCustomFilterPrograms);
}
void RenderLayerFilterInfo::removeCustomFilterClients()
{
for (size_t i = 0; i < m_cachedCustomFilterPrograms.size(); ++i)
m_cachedCustomFilterPrograms.at(i)->removeClient(this);
m_cachedCustomFilterPrograms.clear();
}
} // namespace WebCore
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