63 lines
2.5 KiB
C++
63 lines
2.5 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ScrollOptions.h"
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#include <cmath>
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namespace WebCore {
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struct ScrollToOptions : ScrollOptions {
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std::optional<double> left;
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std::optional<double> top;
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ScrollToOptions() = default;
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ScrollToOptions(double x, double y)
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: left(x)
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, top(y)
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{ }
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};
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inline double normalizeNonFiniteValueOrFallBackTo(std::optional<double> value, double fallbackValue)
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{
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// Normalize non-finite values (https://drafts.csswg.org/cssom-view/#normalize-non-finite-values).
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return value ? (std::isfinite(*value) ? *value : 0) : fallbackValue;
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}
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// FIXME(https://webkit.org/b/88339): Consider using FloatPoint or DoublePoint for fallback and return values.
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inline ScrollToOptions normalizeNonFiniteCoordinatesOrFallBackTo(const ScrollToOptions& value, double x, double y)
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{
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ScrollToOptions options = value;
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options.left = normalizeNonFiniteValueOrFallBackTo(value.left, x);
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options.top = normalizeNonFiniteValueOrFallBackTo(value.top, y);
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return options;
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}
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}
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