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/*
* Copyright (C) 2023 ChangSeok Oh <changseok@webkit.org>
*
* 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 <variant>
#include <wtf/Markable.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
struct FloatMarkableTraits {
constexpr static bool isEmptyValue(float value)
{
return value != value;
}
constexpr static float emptyValue()
{
return std::numeric_limits<float>::quiet_NaN();
}
};
struct FontSizeAdjust {
bool operator==(const FontSizeAdjust& other) const
{
return metric == other.metric && value == other.value
&& isFromFont == other.isFromFont;
}
enum class Metric : uint8_t {
ExHeight,
CapHeight,
ChWidth,
IcWidth,
IcHeight
};
Metric metric { Metric::ExHeight };
bool isFromFont { false };
Markable<float, FloatMarkableTraits> value { };
};
inline void add(Hasher& hasher, const FontSizeAdjust& fontSizeAdjust)
{
add(hasher, fontSizeAdjust.metric, *fontSizeAdjust.value);
}
inline TextStream& operator<<(TextStream& ts, const FontSizeAdjust& fontSizeAdjust)
{
switch (fontSizeAdjust.metric) {
case FontSizeAdjust::Metric::CapHeight:
ts << "cap-height";
break;
case FontSizeAdjust::Metric::ChWidth:
ts << "ch-width";
break;
case FontSizeAdjust::Metric::IcWidth:
ts << "ic-width";
break;
case FontSizeAdjust::Metric::IcHeight:
ts << "ic-height";
break;
case FontSizeAdjust::Metric::ExHeight:
default:
if (fontSizeAdjust.isFromFont)
return ts << "from-font";
return ts << *fontSizeAdjust.value;
}
if (fontSizeAdjust.isFromFont)
return ts << " " << "from-font";
return ts << " " << fontSizeAdjust.value;
}
}
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