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/*
* 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