71 lines
2.8 KiB
C++
71 lines
2.8 KiB
C++
/*
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* Copyright (C) Research In Motion Limited 2011. All rights reserved.
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "ExceptionOr.h"
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#include "FloatRect.h"
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#include "SVGLengthValue.h"
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#include "SVGUnitTypes.h"
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namespace WebCore {
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class SVGElement;
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struct Length;
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class SVGLengthContext {
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public:
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explicit SVGLengthContext(const SVGElement*);
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template<typename T>
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static FloatRect resolveRectangle(const T* context, SVGUnitTypes::SVGUnitType type, const FloatRect& viewport)
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{
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return SVGLengthContext::resolveRectangle(context, type, viewport, context->x(), context->y(), context->width(), context->height());
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}
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static FloatRect resolveRectangle(const SVGElement*, SVGUnitTypes::SVGUnitType, const FloatRect& viewport, const SVGLengthValue& x, const SVGLengthValue& y, const SVGLengthValue& width, const SVGLengthValue& height);
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static FloatPoint resolvePoint(const SVGElement*, SVGUnitTypes::SVGUnitType, const SVGLengthValue& x, const SVGLengthValue& y);
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static float resolveLength(const SVGElement*, SVGUnitTypes::SVGUnitType, const SVGLengthValue&);
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float valueForLength(const Length&, SVGLengthMode = SVGLengthMode::Other);
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ExceptionOr<float> convertValueToUserUnits(float, SVGLengthType, SVGLengthMode) const;
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ExceptionOr<float> convertValueFromUserUnits(float, SVGLengthType, SVGLengthMode) const;
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bool determineViewport(FloatSize&) const;
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private:
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SVGLengthContext(const SVGElement*, const FloatRect& viewport);
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ExceptionOr<float> convertValueFromUserUnitsToPercentage(float value, SVGLengthMode) const;
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ExceptionOr<float> convertValueFromPercentageToUserUnits(float value, SVGLengthMode) const;
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ExceptionOr<float> convertValueFromUserUnitsToEMS(float value) const;
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ExceptionOr<float> convertValueFromEMSToUserUnits(float value) const;
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ExceptionOr<float> convertValueFromUserUnitsToEXS(float value) const;
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ExceptionOr<float> convertValueFromEXSToUserUnits(float value) const;
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const SVGElement* m_context;
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FloatRect m_overriddenViewport;
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};
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} // namespace WebCore
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