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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) 2010 Zoltan Herczeg <zherczeg@webkit.org>
* 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_CONVOLVE_MATRIX_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_CONVOLVE_MATRIX_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/graphics/filters/filter.h"
#include "third_party/blink/renderer/platform/graphics/filters/filter_effect.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
enum EdgeModeType {
EDGEMODE_UNKNOWN = 0,
EDGEMODE_DUPLICATE = 1,
EDGEMODE_WRAP = 2,
EDGEMODE_NONE = 3
};
class PLATFORM_EXPORT FEConvolveMatrix final : public FilterEffect {
public:
static FEConvolveMatrix* Create(Filter*,
const IntSize&,
float,
float,
const IntPoint&,
EdgeModeType,
bool,
const Vector<float>&);
FEConvolveMatrix(Filter*,
const IntSize&,
float,
float,
const IntPoint&,
EdgeModeType,
bool,
const Vector<float>&);
bool SetDivisor(float);
bool SetBias(float);
bool SetTargetOffset(const IntPoint&);
bool SetEdgeMode(EdgeModeType);
bool SetPreserveAlpha(bool);
WTF::TextStream& ExternalRepresentation(WTF::TextStream&,
int indention) const override;
private:
FloatRect MapEffect(const FloatRect&) const final;
sk_sp<PaintFilter> CreateImageFilter() override;
bool ParametersValid() const;
IntSize kernel_size_;
float divisor_;
float bias_;
IntPoint target_offset_;
EdgeModeType edge_mode_;
bool preserve_alpha_;
Vector<float> kernel_matrix_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_FILTERS_FE_CONVOLVE_MATRIX_H_
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