/* * 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. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 <wtf/Vector.h> namespace WebCore { template <typename T> struct ScrollOffsetRange { T start; T end; }; template <typename T> struct ScrollSnapOffsetsInfo { Vector<T> horizontalSnapOffsets; Vector<T> verticalSnapOffsets; // Snap offset ranges represent non-empty ranges of scroll offsets in which scrolling may rest after scroll snapping. // These are used in two cases: (1) for proximity scroll snapping, where portions of areas between adjacent snap offsets // may emit snap offset ranges, and (2) in the case where the snap area is larger than the snap port, in which case areas // where the snap port fits within the snap area are considered to be valid snap positions. Vector<ScrollOffsetRange<T>> horizontalSnapOffsetRanges; Vector<ScrollOffsetRange<T>> verticalSnapOffsetRanges; }; }; // namespace WebCore