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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
*
* 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 "third_party/blink/renderer/core/svg/svg_fe_component_transfer_element.h"
#include "third_party/blink/renderer/core/dom/element_traversal.h"
#include "third_party/blink/renderer/core/svg/graphics/filters/svg_filter_builder.h"
#include "third_party/blink/renderer/core/svg/svg_animated_string.h"
#include "third_party/blink/renderer/core/svg/svg_fe_func_a_element.h"
#include "third_party/blink/renderer/core/svg/svg_fe_func_b_element.h"
#include "third_party/blink/renderer/core/svg/svg_fe_func_g_element.h"
#include "third_party/blink/renderer/core/svg/svg_fe_func_r_element.h"
#include "third_party/blink/renderer/core/svg_names.h"
#include "third_party/blink/renderer/platform/graphics/filters/fe_component_transfer.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
namespace blink {
SVGFEComponentTransferElement::SVGFEComponentTransferElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(svg_names::kFEComponentTransferTag,
document),
in1_(MakeGarbageCollected<SVGAnimatedString>(this, svg_names::kInAttr)) {
AddToPropertyMap(in1_);
}
void SVGFEComponentTransferElement::Trace(Visitor* visitor) const {
visitor->Trace(in1_);
SVGFilterPrimitiveStandardAttributes::Trace(visitor);
}
void SVGFEComponentTransferElement::SvgAttributeChanged(
const SvgAttributeChangedParams& params) {
if (params.name == svg_names::kInAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
Invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::SvgAttributeChanged(params);
}
FilterEffect* SVGFEComponentTransferElement::Build(
SVGFilterBuilder* filter_builder,
Filter* filter) {
FilterEffect* input1 = filter_builder->GetEffectById(
AtomicString(in1_->CurrentValue()->Value()));
DCHECK(input1);
ComponentTransferFunction red;
ComponentTransferFunction green;
ComponentTransferFunction blue;
ComponentTransferFunction alpha;
for (SVGElement* element = Traversal<SVGElement>::FirstChild(*this); element;
element = Traversal<SVGElement>::NextSibling(*element)) {
if (auto* func_r = DynamicTo<SVGFEFuncRElement>(*element))
red = func_r->TransferFunction();
else if (auto* func_g = DynamicTo<SVGFEFuncGElement>(*element))
green = func_g->TransferFunction();
else if (auto* func_b = DynamicTo<SVGFEFuncBElement>(*element))
blue = func_b->TransferFunction();
else if (auto* func_a = DynamicTo<SVGFEFuncAElement>(*element))
alpha = func_a->TransferFunction();
}
auto* effect = MakeGarbageCollected<FEComponentTransfer>(filter, red, green,
blue, alpha);
effect->InputEffects().push_back(input1);
return effect;
}
} // namespace blink
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