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/*
* Copyright (C) 2021 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 "LayoutUnit.h"
#include <wtf/OptionSet.h>
namespace WebCore {
namespace Layout {
struct HorizontalConstraints {
LayoutUnit logicalRight() const { return logicalLeft + logicalWidth; }
LayoutUnit logicalLeft;
LayoutUnit logicalWidth;
};
struct VerticalConstraints {
LayoutUnit logicalTop;
LayoutUnit logicalHeight;
};
struct ConstraintsForInFlowContent {
ConstraintsForInFlowContent(HorizontalConstraints, LayoutUnit logicalTop);
HorizontalConstraints horizontal() const { return m_horizontal; }
LayoutUnit logicalTop() const { return m_logicalTop; }
enum BaseTypeFlag : uint8_t {
GenericContent = 1 << 0,
InlineContent = 1 << 1,
TableContent = 1 << 2,
FlexContent = 1 << 3
};
bool isConstraintsForInlineContent() const { return baseTypeFlags().contains(InlineContent); }
bool isConstraintsForTableContent() const { return baseTypeFlags().contains(TableContent); }
bool isConstraintsForFlexContent() const { return baseTypeFlags().contains(FlexContent); }
protected:
ConstraintsForInFlowContent(HorizontalConstraints, LayoutUnit logicalTop, OptionSet<BaseTypeFlag>);
private:
OptionSet<BaseTypeFlag> baseTypeFlags() const { return OptionSet<BaseTypeFlag>::fromRaw(m_baseTypeFlags); }
unsigned m_baseTypeFlags : 3; // OptionSet<BaseTypeFlag>
HorizontalConstraints m_horizontal;
LayoutUnit m_logicalTop;
};
struct ConstraintsForOutOfFlowContent {
HorizontalConstraints horizontal;
VerticalConstraints vertical;
// Borders and padding are resolved against the containing block's content box as if the box was an in-flow box.
LayoutUnit borderAndPaddingConstraints;
};
inline ConstraintsForInFlowContent::ConstraintsForInFlowContent(HorizontalConstraints horizontal, LayoutUnit logicalTop, OptionSet<BaseTypeFlag> baseTypeFlags)
: m_baseTypeFlags(baseTypeFlags.toRaw())
, m_horizontal(horizontal)
, m_logicalTop(logicalTop)
{
}
inline ConstraintsForInFlowContent::ConstraintsForInFlowContent(HorizontalConstraints horizontal, LayoutUnit logicalTop)
: ConstraintsForInFlowContent(horizontal, logicalTop, GenericContent)
{
}
enum class IntrinsicWidthMode {
Minimum,
Maximum
};
struct IntrinsicWidthConstraints {
void expand(LayoutUnit horizontalValue);
IntrinsicWidthConstraints& operator+=(const IntrinsicWidthConstraints&);
IntrinsicWidthConstraints& operator+=(LayoutUnit);
IntrinsicWidthConstraints& operator-=(const IntrinsicWidthConstraints&);
IntrinsicWidthConstraints& operator-=(LayoutUnit);
LayoutUnit minimum;
LayoutUnit maximum;
};
inline void IntrinsicWidthConstraints::expand(LayoutUnit horizontalValue)
{
minimum += horizontalValue;
maximum += horizontalValue;
}
inline IntrinsicWidthConstraints& IntrinsicWidthConstraints::operator+=(const IntrinsicWidthConstraints& other)
{
minimum += other.minimum;
maximum += other.maximum;
return *this;
}
inline IntrinsicWidthConstraints& IntrinsicWidthConstraints::operator+=(LayoutUnit value)
{
expand(value);
return *this;
}
inline IntrinsicWidthConstraints& IntrinsicWidthConstraints::operator-=(const IntrinsicWidthConstraints& other)
{
minimum -= other.minimum;
maximum -= other.maximum;
return *this;
}
inline IntrinsicWidthConstraints& IntrinsicWidthConstraints::operator-=(LayoutUnit value)
{
expand(-value);
return *this;
}
}
}
#define SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_CONSTRAINTS(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::Layout::ToValueTypeName) \
static bool isType(const WebCore::Layout::ConstraintsForInFlowContent& constraints) { return constraints.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
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