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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Oliver Hunt <oliver@nerget.com>
*
* 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_specular_lighting_element.h"
#include "third_party/blink/renderer/core/dom/node_computed_style.h"
#include "third_party/blink/renderer/core/style/computed_style.h"
#include "third_party/blink/renderer/core/svg/graphics/filters/svg_filter_builder.h"
#include "third_party/blink/renderer/platform/graphics/filters/fe_specular_lighting.h"
#include "third_party/blink/renderer/platform/graphics/filters/filter.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
namespace blink {
SVGFESpecularLightingElement::SVGFESpecularLightingElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(svg_names::kFESpecularLightingTag,
document),
specular_constant_(MakeGarbageCollected<SVGAnimatedNumber>(
this,
svg_names::kSpecularConstantAttr,
1)),
specular_exponent_(MakeGarbageCollected<SVGAnimatedNumber>(
this,
svg_names::kSpecularExponentAttr,
1)),
surface_scale_(
MakeGarbageCollected<SVGAnimatedNumber>(this,
svg_names::kSurfaceScaleAttr,
1)),
kernel_unit_length_(MakeGarbageCollected<SVGAnimatedNumberOptionalNumber>(
this,
svg_names::kKernelUnitLengthAttr,
0.0f)),
in1_(MakeGarbageCollected<SVGAnimatedString>(this, svg_names::kInAttr)) {
AddToPropertyMap(specular_constant_);
AddToPropertyMap(specular_exponent_);
AddToPropertyMap(surface_scale_);
AddToPropertyMap(kernel_unit_length_);
AddToPropertyMap(in1_);
}
void SVGFESpecularLightingElement::Trace(Visitor* visitor) {
visitor->Trace(specular_constant_);
visitor->Trace(specular_exponent_);
visitor->Trace(surface_scale_);
visitor->Trace(kernel_unit_length_);
visitor->Trace(in1_);
SVGFilterPrimitiveStandardAttributes::Trace(visitor);
}
bool SVGFESpecularLightingElement::SetFilterEffectAttribute(
FilterEffect* effect,
const QualifiedName& attr_name) {
FESpecularLighting* specular_lighting =
static_cast<FESpecularLighting*>(effect);
if (attr_name == svg_names::kLightingColorAttr) {
const ComputedStyle& style = ComputedStyleRef();
return specular_lighting->SetLightingColor(
style.VisitedDependentColor(GetCSSPropertyLightingColor()));
}
if (attr_name == svg_names::kSurfaceScaleAttr)
return specular_lighting->SetSurfaceScale(
surface_scale_->CurrentValue()->Value());
if (attr_name == svg_names::kSpecularConstantAttr)
return specular_lighting->SetSpecularConstant(
specular_constant_->CurrentValue()->Value());
if (attr_name == svg_names::kSpecularExponentAttr)
return specular_lighting->SetSpecularExponent(
specular_exponent_->CurrentValue()->Value());
LightSource* light_source =
const_cast<LightSource*>(specular_lighting->GetLightSource());
SVGFELightElement* light_element = SVGFELightElement::FindLightElement(*this);
DCHECK(light_source);
DCHECK(light_element);
DCHECK(effect->GetFilter());
if (attr_name == svg_names::kAzimuthAttr)
return light_source->SetAzimuth(
light_element->azimuth()->CurrentValue()->Value());
if (attr_name == svg_names::kElevationAttr)
return light_source->SetElevation(
light_element->elevation()->CurrentValue()->Value());
if (attr_name == svg_names::kXAttr || attr_name == svg_names::kYAttr ||
attr_name == svg_names::kZAttr)
return light_source->SetPosition(
effect->GetFilter()->Resolve3dPoint(light_element->GetPosition()));
if (attr_name == svg_names::kPointsAtXAttr ||
attr_name == svg_names::kPointsAtYAttr ||
attr_name == svg_names::kPointsAtZAttr)
return light_source->SetPointsAt(
effect->GetFilter()->Resolve3dPoint(light_element->PointsAt()));
if (attr_name == svg_names::kSpecularExponentAttr)
return light_source->SetSpecularExponent(
light_element->specularExponent()->CurrentValue()->Value());
if (attr_name == svg_names::kLimitingConeAngleAttr)
return light_source->SetLimitingConeAngle(
light_element->limitingConeAngle()->CurrentValue()->Value());
return SVGFilterPrimitiveStandardAttributes::SetFilterEffectAttribute(
effect, attr_name);
}
void SVGFESpecularLightingElement::SvgAttributeChanged(
const QualifiedName& attr_name) {
if (attr_name == svg_names::kSurfaceScaleAttr ||
attr_name == svg_names::kSpecularConstantAttr ||
attr_name == svg_names::kSpecularExponentAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
PrimitiveAttributeChanged(attr_name);
return;
}
if (attr_name == svg_names::kInAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
Invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::SvgAttributeChanged(attr_name);
}
void SVGFESpecularLightingElement::LightElementAttributeChanged(
const SVGFELightElement* light_element,
const QualifiedName& attr_name) {
if (SVGFELightElement::FindLightElement(*this) != light_element)
return;
// The light element has different attribute names so attrName can identify
// the requested attribute.
PrimitiveAttributeChanged(attr_name);
}
FilterEffect* SVGFESpecularLightingElement::Build(
SVGFilterBuilder* filter_builder,
Filter* filter) {
FilterEffect* input1 = filter_builder->GetEffectById(
AtomicString(in1_->CurrentValue()->Value()));
DCHECK(input1);
const ComputedStyle* style = GetComputedStyle();
if (!style)
return nullptr;
Color color = style->VisitedDependentColor(GetCSSPropertyLightingColor());
const SVGFELightElement* light_node =
SVGFELightElement::FindLightElement(*this);
scoped_refptr<LightSource> light_source =
light_node ? light_node->GetLightSource(filter) : nullptr;
auto* effect = MakeGarbageCollected<FESpecularLighting>(
filter, color, surface_scale_->CurrentValue()->Value(),
specular_constant_->CurrentValue()->Value(),
specular_exponent_->CurrentValue()->Value(), std::move(light_source));
effect->InputEffects().push_back(input1);
return effect;
}
bool SVGFESpecularLightingElement::TaintsOrigin() const {
const ComputedStyle* style = GetComputedStyle();
// TaintsOrigin() is only called after a successful call to Build()
// (see above), so we should have a ComputedStyle here.
DCHECK(style);
return style->SvgStyle().LightingColor().IsCurrentColor();
}
} // namespace blink
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