63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
/*
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* Copyright (C) 2021 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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 ON
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* 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 THIS
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* 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 <optional>
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namespace WebCore {
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struct TextBoxSelectableRange {
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const unsigned start;
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const unsigned length;
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const unsigned additionalLengthAtEnd { 0 };
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const bool isLineBreak { false };
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const std::optional<unsigned> truncation { };
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unsigned clamp(unsigned offset) const
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{
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auto clampedOffset = std::clamp(offset, start, start + length) - start;
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if (truncation)
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return std::min<unsigned>(clampedOffset, *truncation);
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if (clampedOffset == length)
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clampedOffset += additionalLengthAtEnd;
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return clampedOffset;
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}
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std::pair<unsigned, unsigned> clamp(unsigned startOffset, unsigned endOffset) const
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{
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return { clamp(startOffset), clamp(endOffset) };
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}
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bool intersects(unsigned startOffset, unsigned endOffset) const
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{
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return clamp(startOffset) < clamp(endOffset);
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}
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};
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}
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