| /* |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * Copyright (C) 2013 Google Inc. 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. |
| */ |
| |
| #include "config.h" |
| #include "SVGFilter.h" |
| |
| #include "SVGFilterBuilder.h" |
| #include "SVGFilterElement.h" |
| #include "SourceGraphic.h" |
| |
| namespace WebCore { |
| |
| RefPtr<SVGFilter> SVGFilter::create(SVGFilterElement& filterElement, SVGFilterBuilder& builder, RenderingMode renderingMode, const FloatSize& filterScale, const FloatRect& sourceImageRect, const FloatRect& filterRegion, FilterEffect& previousEffect) |
| { |
| return create(filterElement, builder, renderingMode, filterScale, sourceImageRect, filterRegion, filterRegion, &previousEffect); |
| } |
| |
| RefPtr<SVGFilter> SVGFilter::create(SVGFilterElement& filterElement, SVGFilterBuilder& builder, RenderingMode renderingMode, const FloatSize& filterScale, const FloatRect& sourceImageRect, const FloatRect& filterRegion, const FloatRect& targetBoundingBox) |
| { |
| return create(filterElement, builder, renderingMode, filterScale, sourceImageRect, filterRegion, targetBoundingBox, nullptr); |
| } |
| |
| RefPtr<SVGFilter> SVGFilter::create(SVGFilterElement& filterElement, SVGFilterBuilder& builder, RenderingMode renderingMode, const FloatSize& filterScale, const FloatRect& sourceImageRect, const FloatRect& filterRegion, const FloatRect& targetBoundingBox, FilterEffect* previousEffect) |
| { |
| bool primitiveBoundingBoxMode = filterElement.primitiveUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX; |
| |
| auto filter = adoptRef(*new SVGFilter(renderingMode, filterScale, sourceImageRect, filterRegion, targetBoundingBox, primitiveBoundingBoxMode)); |
| |
| if (!previousEffect) |
| builder.setupBuiltinEffects(SourceGraphic::create()); |
| else |
| builder.setupBuiltinEffects({ *previousEffect }); |
| |
| builder.setTargetBoundingBox(targetBoundingBox); |
| builder.setPrimitiveUnits(filterElement.primitiveUnits()); |
| |
| auto lastEffect = builder.buildFilterEffects(filterElement); |
| if (!lastEffect) |
| return nullptr; |
| |
| FilterEffectVector expression; |
| if (!builder.buildExpression(expression)) |
| return nullptr; |
| |
| ASSERT(!expression.isEmpty()); |
| filter->setExpression(WTFMove(expression)); |
| |
| #if USE(CORE_IMAGE) |
| if (!filter->supportsCoreImageRendering()) |
| filter->setRenderingMode(RenderingMode::Unaccelerated); |
| #endif |
| |
| return filter; |
| } |
| |
| SVGFilter::SVGFilter(RenderingMode renderingMode, const FloatSize& filterScale, const FloatRect& sourceImageRect, const FloatRect& filterRegion, const FloatRect& targetBoundingBox, bool effectBBoxMode) |
| : Filter(Filter::Type::SVGFilter, renderingMode, filterScale, sourceImageRect, filterRegion) |
| , m_targetBoundingBox(targetBoundingBox) |
| , m_effectBBoxMode(effectBBoxMode) |
| { |
| } |
| |
| FloatSize SVGFilter::scaledByFilterScale(FloatSize size) const |
| { |
| if (m_effectBBoxMode) |
| size = size * m_targetBoundingBox.size(); |
| |
| return Filter::scaledByFilterScale(size); |
| } |
| |
| #if USE(CORE_IMAGE) |
| bool SVGFilter::supportsCoreImageRendering() const |
| { |
| if (renderingMode() == RenderingMode::Unaccelerated) |
| return false; |
| |
| ASSERT(!m_expression.isEmpty()); |
| for (auto& effect : m_expression) { |
| if (!effect->supportsCoreImageRendering()) |
| return false; |
| } |
| |
| return true; |
| } |
| #endif |
| |
| bool SVGFilter::apply(const Filter& filter) |
| { |
| setSourceImage({ filter.sourceImage() }); |
| return apply(); |
| } |
| |
| bool SVGFilter::apply() |
| { |
| ASSERT(!m_expression.isEmpty()); |
| for (auto& effect : m_expression) { |
| if (!effect->apply(*this)) |
| return false; |
| } |
| return true; |
| } |
| |
| IntOutsets SVGFilter::outsets() const |
| { |
| ASSERT(lastEffect()); |
| return lastEffect()->outsets(); |
| } |
| |
| void SVGFilter::clearResult() |
| { |
| ASSERT(!m_expression.isEmpty()); |
| for (auto& effect : m_expression) |
| effect->clearResult(); |
| } |
| |
| } // namespace WebCore |