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/*
* Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2005 Eric Seidel <eric@webkit.org>
* 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 "third_party/blink/renderer/platform/graphics/filters/fe_morphology.h"
#include "SkMorphologyImageFilter.h"
#include "third_party/blink/renderer/platform/graphics/filters/filter.h"
#include "third_party/blink/renderer/platform/graphics/filters/paint_filter_builder.h"
#include "third_party/blink/renderer/platform/wtf/text/text_stream.h"
namespace blink {
FEMorphology::FEMorphology(Filter* filter,
MorphologyOperatorType type,
float radius_x,
float radius_y)
: FilterEffect(filter),
type_(type),
radius_x_(std::max(0.0f, radius_x)),
radius_y_(std::max(0.0f, radius_y)) {}
FEMorphology* FEMorphology::Create(Filter* filter,
MorphologyOperatorType type,
float radius_x,
float radius_y) {
return new FEMorphology(filter, type, radius_x, radius_y);
}
MorphologyOperatorType FEMorphology::MorphologyOperator() const {
return type_;
}
bool FEMorphology::SetMorphologyOperator(MorphologyOperatorType type) {
if (type_ == type)
return false;
type_ = type;
return true;
}
float FEMorphology::RadiusX() const {
return radius_x_;
}
bool FEMorphology::SetRadiusX(float radius_x) {
radius_x = std::max(0.0f, radius_x);
if (radius_x_ == radius_x)
return false;
radius_x_ = radius_x;
return true;
}
float FEMorphology::RadiusY() const {
return radius_y_;
}
bool FEMorphology::SetRadiusY(float radius_y) {
radius_y = std::max(0.0f, radius_y);
if (radius_y_ == radius_y)
return false;
radius_y_ = radius_y;
return true;
}
FloatRect FEMorphology::MapEffect(const FloatRect& rect) const {
FloatRect result = rect;
result.InflateX(GetFilter()->ApplyHorizontalScale(radius_x_));
result.InflateY(GetFilter()->ApplyVerticalScale(radius_y_));
return result;
}
sk_sp<PaintFilter> FEMorphology::CreateImageFilter() {
sk_sp<PaintFilter> input(
PaintFilterBuilder::Build(InputEffect(0), OperatingInterpolationSpace()));
int radius_x = clampTo<int>(GetFilter()->ApplyHorizontalScale(radius_x_));
int radius_y = clampTo<int>(GetFilter()->ApplyVerticalScale(radius_y_));
PaintFilter::CropRect rect = GetCropRect();
MorphologyPaintFilter::MorphType morph_type =
type_ == FEMORPHOLOGY_OPERATOR_DILATE
? MorphologyPaintFilter::MorphType::kDilate
: MorphologyPaintFilter::MorphType::kErode;
return sk_make_sp<MorphologyPaintFilter>(morph_type, radius_x, radius_y,
std::move(input), &rect);
}
static WTF::TextStream& operator<<(WTF::TextStream& ts,
const MorphologyOperatorType& type) {
switch (type) {
case FEMORPHOLOGY_OPERATOR_UNKNOWN:
ts << "UNKNOWN";
break;
case FEMORPHOLOGY_OPERATOR_ERODE:
ts << "ERODE";
break;
case FEMORPHOLOGY_OPERATOR_DILATE:
ts << "DILATE";
break;
}
return ts;
}
WTF::TextStream& FEMorphology::ExternalRepresentation(WTF::TextStream& ts,
int indent) const {
WriteIndent(ts, indent);
ts << "[feMorphology";
FilterEffect::ExternalRepresentation(ts);
ts << " operator=\"" << MorphologyOperator() << "\" "
<< "radius=\"" << RadiusX() << ", " << RadiusY() << "\"]\n";
InputEffect(0)->ExternalRepresentation(ts, indent + 1);
return ts;
}
} // namespace blink
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