100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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* Copyright (C) 2013-2017 Igalia S.L.
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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 are
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* 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
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* OF 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 <wtf/text/WTFString.h>
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namespace WebCore {
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enum GridPositionType {
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AutoPosition,
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ExplicitPosition, // [ <integer> || <string> ]
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SpanPosition, // span && [ <integer> || <string> ]
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NamedGridAreaPosition // <ident>
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};
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enum GridPositionSide {
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ColumnStartSide,
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ColumnEndSide,
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RowStartSide,
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RowEndSide
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};
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class GridPosition {
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public:
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GridPosition()
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: m_type(AutoPosition)
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, m_integerPosition(0)
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{
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}
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bool isPositive() const { return integerPosition() > 0; }
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GridPositionType type() const { return m_type; }
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bool isAuto() const { return m_type == AutoPosition; }
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bool isSpan() const { return m_type == SpanPosition; }
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bool isNamedGridArea() const { return m_type == NamedGridAreaPosition; }
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WEBCORE_EXPORT void setExplicitPosition(int position, const String& namedGridLine);
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void setAutoPosition();
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WEBCORE_EXPORT void setSpanPosition(int position, const String& namedGridLine);
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void setNamedGridArea(const String&);
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WEBCORE_EXPORT int integerPosition() const;
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String namedGridLine() const;
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WEBCORE_EXPORT int spanPosition() const;
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bool operator==(const GridPosition& other) const;
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bool shouldBeResolvedAgainstOppositePosition() const { return isAuto() || isSpan(); }
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// Note that grid line 1 is internally represented by the index 0, that's why the max value for
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// a position is kGridMaxTracks instead of kGridMaxTracks + 1.
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static int max();
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static int min();
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WEBCORE_EXPORT static void setMaxPositionForTesting(unsigned);
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private:
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static std::optional<int> gMaxPositionForTesting;
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void setIntegerPosition(int integerPosition) { m_integerPosition = clampTo(integerPosition, min(), max()); }
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GridPositionType m_type;
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int m_integerPosition;
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String m_namedGridLine;
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};
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WTF::TextStream& operator<<(WTF::TextStream&, const GridPosition&);
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} // namespace WebCore
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