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