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/*
* Copyright (C) 2009 Dirk Schulze <krit@webkit.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_convolve_matrix_element.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/svg/graphics/filters/svg_filter_builder.h"
#include "third_party/blink/renderer/core/svg/svg_animated_boolean.h"
#include "third_party/blink/renderer/core/svg/svg_animated_integer.h"
#include "third_party/blink/renderer/core/svg/svg_animated_integer_optional_integer.h"
#include "third_party/blink/renderer/core/svg/svg_animated_number.h"
#include "third_party/blink/renderer/core/svg/svg_animated_number_list.h"
#include "third_party/blink/renderer/core/svg/svg_animated_number_optional_number.h"
#include "third_party/blink/renderer/core/svg/svg_animated_string.h"
#include "third_party/blink/renderer/core/svg/svg_enumeration_map.h"
#include "third_party/blink/renderer/core/svg_names.h"
#include "third_party/blink/renderer/platform/geometry/int_point.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
namespace blink {
template <>
CORE_EXPORT const SVGEnumerationMap&
GetEnumerationMap<FEConvolveMatrix::EdgeModeType>() {
static const SVGEnumerationMap::Entry enum_items[] = {
{FEConvolveMatrix::EDGEMODE_DUPLICATE, "duplicate"},
{FEConvolveMatrix::EDGEMODE_WRAP, "wrap"},
{FEConvolveMatrix::EDGEMODE_NONE, "none"},
};
static const SVGEnumerationMap entries(enum_items);
return entries;
}
class SVGAnimatedOrder : public SVGAnimatedIntegerOptionalInteger {
public:
SVGAnimatedOrder(SVGElement* context_element)
: SVGAnimatedIntegerOptionalInteger(context_element,
svg_names::kOrderAttr,
3) {}
SVGParsingError AttributeChanged(const String&) override;
protected:
static SVGParsingError CheckValue(SVGParsingError parse_status, int value) {
if (parse_status != SVGParseStatus::kNoError)
return parse_status;
if (value < 0)
return SVGParseStatus::kNegativeValue;
if (value == 0)
return SVGParseStatus::kZeroValue;
return SVGParseStatus::kNoError;
}
};
SVGParsingError SVGAnimatedOrder::AttributeChanged(const String& value) {
SVGParsingError parse_status =
SVGAnimatedIntegerOptionalInteger::AttributeChanged(value);
// Check for semantic errors.
parse_status = CheckValue(parse_status, FirstInteger()->BaseValue()->Value());
parse_status =
CheckValue(parse_status, SecondInteger()->BaseValue()->Value());
return parse_status;
}
SVGFEConvolveMatrixElement::SVGFEConvolveMatrixElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(svg_names::kFEConvolveMatrixTag,
document),
bias_(MakeGarbageCollected<SVGAnimatedNumber>(this,
svg_names::kBiasAttr,
0.0f)),
divisor_(MakeGarbageCollected<SVGAnimatedNumber>(this,
svg_names::kDivisorAttr,
1)),
in1_(MakeGarbageCollected<SVGAnimatedString>(this, svg_names::kInAttr)),
edge_mode_(MakeGarbageCollected<
SVGAnimatedEnumeration<FEConvolveMatrix::EdgeModeType>>(
this,
svg_names::kEdgeModeAttr,
FEConvolveMatrix::EDGEMODE_DUPLICATE)),
kernel_matrix_(MakeGarbageCollected<SVGAnimatedNumberList>(
this,
svg_names::kKernelMatrixAttr)),
kernel_unit_length_(MakeGarbageCollected<SVGAnimatedNumberOptionalNumber>(
this,
svg_names::kKernelUnitLengthAttr,
0.0f)),
order_(MakeGarbageCollected<SVGAnimatedOrder>(this)),
preserve_alpha_(MakeGarbageCollected<SVGAnimatedBoolean>(
this,
svg_names::kPreserveAlphaAttr)),
target_x_(
MakeGarbageCollected<SVGAnimatedInteger>(this,
svg_names::kTargetXAttr,
0)),
target_y_(
MakeGarbageCollected<SVGAnimatedInteger>(this,
svg_names::kTargetYAttr,
0)) {
AddToPropertyMap(preserve_alpha_);
AddToPropertyMap(divisor_);
AddToPropertyMap(bias_);
AddToPropertyMap(kernel_unit_length_);
AddToPropertyMap(kernel_matrix_);
AddToPropertyMap(in1_);
AddToPropertyMap(edge_mode_);
AddToPropertyMap(order_);
AddToPropertyMap(target_x_);
AddToPropertyMap(target_y_);
}
SVGAnimatedNumber* SVGFEConvolveMatrixElement::kernelUnitLengthX() {
return kernel_unit_length_->FirstNumber();
}
SVGAnimatedNumber* SVGFEConvolveMatrixElement::kernelUnitLengthY() {
return kernel_unit_length_->SecondNumber();
}
SVGAnimatedInteger* SVGFEConvolveMatrixElement::orderX() const {
return order_->FirstInteger();
}
SVGAnimatedInteger* SVGFEConvolveMatrixElement::orderY() const {
return order_->SecondInteger();
}
void SVGFEConvolveMatrixElement::Trace(Visitor* visitor) const {
visitor->Trace(bias_);
visitor->Trace(divisor_);
visitor->Trace(in1_);
visitor->Trace(edge_mode_);
visitor->Trace(kernel_matrix_);
visitor->Trace(kernel_unit_length_);
visitor->Trace(order_);
visitor->Trace(preserve_alpha_);
visitor->Trace(target_x_);
visitor->Trace(target_y_);
SVGFilterPrimitiveStandardAttributes::Trace(visitor);
}
IntSize SVGFEConvolveMatrixElement::MatrixOrder() const {
if (!order_->IsSpecified())
return IntSize(3, 3);
return IntSize(orderX()->CurrentValue()->Value(),
orderY()->CurrentValue()->Value());
}
IntPoint SVGFEConvolveMatrixElement::TargetPoint() const {
IntSize order = MatrixOrder();
IntPoint target(target_x_->CurrentValue()->Value(),
target_y_->CurrentValue()->Value());
// The spec says the default value is: targetX = floor ( orderX / 2 ))
if (!target_x_->IsSpecified())
target.SetX(order.Width() / 2);
// The spec says the default value is: targetY = floor ( orderY / 2 ))
if (!target_y_->IsSpecified())
target.SetY(order.Height() / 2);
return target;
}
float SVGFEConvolveMatrixElement::ComputeDivisor() const {
if (divisor_->IsSpecified())
return divisor_->CurrentValue()->Value();
float divisor_value = 0;
SVGNumberList* kernel_matrix = kernel_matrix_->CurrentValue();
uint32_t kernel_matrix_size = kernel_matrix->length();
for (uint32_t i = 0; i < kernel_matrix_size; ++i)
divisor_value += kernel_matrix->at(i)->Value();
return divisor_value ? divisor_value : 1;
}
bool SVGFEConvolveMatrixElement::SetFilterEffectAttribute(
FilterEffect* effect,
const QualifiedName& attr_name) {
FEConvolveMatrix* convolve_matrix = static_cast<FEConvolveMatrix*>(effect);
if (attr_name == svg_names::kEdgeModeAttr)
return convolve_matrix->SetEdgeMode(edge_mode_->CurrentEnumValue());
if (attr_name == svg_names::kDivisorAttr)
return convolve_matrix->SetDivisor(ComputeDivisor());
if (attr_name == svg_names::kBiasAttr)
return convolve_matrix->SetBias(bias_->CurrentValue()->Value());
if (attr_name == svg_names::kTargetXAttr ||
attr_name == svg_names::kTargetYAttr)
return convolve_matrix->SetTargetOffset(TargetPoint());
if (attr_name == svg_names::kPreserveAlphaAttr)
return convolve_matrix->SetPreserveAlpha(
preserve_alpha_->CurrentValue()->Value());
return SVGFilterPrimitiveStandardAttributes::SetFilterEffectAttribute(
effect, attr_name);
}
void SVGFEConvolveMatrixElement::SvgAttributeChanged(
const SvgAttributeChangedParams& params) {
const QualifiedName& attr_name = params.name;
if (attr_name == svg_names::kEdgeModeAttr ||
attr_name == svg_names::kDivisorAttr ||
attr_name == svg_names::kBiasAttr ||
attr_name == svg_names::kTargetXAttr ||
attr_name == svg_names::kTargetYAttr ||
attr_name == svg_names::kPreserveAlphaAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
PrimitiveAttributeChanged(attr_name);
return;
}
if (attr_name == svg_names::kInAttr || attr_name == svg_names::kOrderAttr ||
attr_name == svg_names::kKernelMatrixAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
Invalidate();
return;
}
SVGFilterPrimitiveStandardAttributes::SvgAttributeChanged(params);
}
FilterEffect* SVGFEConvolveMatrixElement::Build(
SVGFilterBuilder* filter_builder,
Filter* filter) {
FilterEffect* input1 = filter_builder->GetEffectById(
AtomicString(in1_->CurrentValue()->Value()));
DCHECK(input1);
auto* effect = MakeGarbageCollected<FEConvolveMatrix>(
filter, MatrixOrder(), ComputeDivisor(), bias_->CurrentValue()->Value(),
TargetPoint(), edge_mode_->CurrentEnumValue(),
preserve_alpha_->CurrentValue()->Value(),
kernel_matrix_->CurrentValue()->ToFloatVector());
effect->InputEffects().push_back(input1);
return effect;
}
} // namespace blink
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