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/*
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2015-2024 Apple 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.
*/
#pragma once
#include "SVGPathConsumer.h"
namespace WebCore {
enum FloatBlendMode {
BlendHorizontal,
BlendVertical
};
class SVGPathSource;
class SVGPathBlender {
WTF_MAKE_TZONE_ALLOCATED(SVGPathBlender);
WTF_MAKE_NONCOPYABLE(SVGPathBlender);
public:
static bool addAnimatedPath(SVGPathSource& from, SVGPathSource& to, SVGPathConsumer&, unsigned repeatCount);
static bool blendAnimatedPath(SVGPathSource& from, SVGPathSource& to, SVGPathConsumer&, float);
static bool canBlendPaths(SVGPathSource& from, SVGPathSource& to);
private:
SVGPathBlender(SVGPathSource&, SVGPathSource&, SVGPathConsumer* = nullptr);
bool canBlendPaths();
bool addAnimatedPath(unsigned repeatCount);
bool blendAnimatedPath(float progress);
bool blendMoveToSegment(float progress);
bool blendLineToSegment(float progress);
bool blendLineToHorizontalSegment(float progress);
bool blendLineToVerticalSegment(float progress);
bool blendCurveToCubicSegment(float progress);
bool blendCurveToCubicSmoothSegment(float progress);
bool blendCurveToQuadraticSegment(float progress);
bool blendCurveToQuadraticSmoothSegment(float progress);
bool blendArcToSegment(float progress);
float blendAnimatedDimensonalFloat(float from, float to, FloatBlendMode, float progress);
FloatPoint blendAnimatedFloatPoint(const FloatPoint& from, const FloatPoint& to, float progress);
SingleThreadWeakRef<SVGPathSource> m_fromSource;
SingleThreadWeakRef<SVGPathSource> m_toSource;
SingleThreadWeakPtr<SVGPathConsumer> m_consumer; // A null consumer indicates that we're just checking blendability.
FloatPoint m_fromCurrentPoint;
FloatPoint m_toCurrentPoint;
FloatPoint m_fromSubpathPoint;
FloatPoint m_toSubpathPoint;
PathCoordinateMode m_fromMode { AbsoluteCoordinates };
PathCoordinateMode m_toMode { AbsoluteCoordinates };
unsigned m_addTypesCount { 0 };
bool m_isInFirstHalfOfAnimation { false };
};
} // namespace WebCore
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