blob: c1311f9c6e99609be430f058145d0d0ef363af34 [file] [log] [blame]
/*
* Copyright (C) 2018 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
#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
#include "LayoutUnit.h"
#include "LayoutPoint.h"
#include "LayoutRect.h"
#include "MarginTypes.h"
#include <wtf/Optional.h>
namespace WebCore {
#define USE_FLOAT_AS_INLINE_LAYOUT_UNIT 1
#if USE_FLOAT_AS_INLINE_LAYOUT_UNIT
using InlineLayoutUnit = float;
using InlineLayoutPoint = FloatPoint;
using InlineLayoutSize = FloatSize;
using InlineLayoutRect = FloatRect;
#else
using InlineLayoutUnit = LayoutUnit;
using InlineLayoutPoint = LayoutPoint;
using InlineLayoutSize = LayoutSize;
using InlineLayoutRect = LayoutRect;
#endif
namespace Layout {
struct Position {
operator LayoutUnit() const { return value; }
LayoutUnit value;
};
inline bool operator<(const Position& a, const Position& b)
{
return a.value < b.value;
}
inline bool operator==(const Position& a, const Position& b)
{
return a.value == b.value;
}
struct Point {
// FIXME: Use Position<Horizontal>, Position<Vertical> to avoid top/left vs. x/y confusion.
LayoutUnit x; // left
LayoutUnit y; // top
Point() = default;
Point(LayoutUnit, LayoutUnit);
Point(LayoutPoint);
static Point max() { return { LayoutUnit::max(), LayoutUnit::max() }; }
void move(LayoutSize);
void moveBy(LayoutPoint);
operator LayoutPoint() const { return { x, y }; }
};
// FIXME: Wrap these into structs.
using PointInContextRoot = Point;
using PositionInContextRoot = Position;
inline Point::Point(LayoutPoint point)
: x(point.x())
, y(point.y())
{
}
inline Point::Point(LayoutUnit x, LayoutUnit y)
: x(x)
, y(y)
{
}
inline void Point::move(LayoutSize offset)
{
x += offset.width();
y += offset.height();
}
inline void Point::moveBy(LayoutPoint offset)
{
x += offset.x();
y += offset.y();
}
// Margin, border, padding
struct HorizontalEdges {
LayoutUnit left;
LayoutUnit right;
LayoutUnit width() const { return left + right; }
};
struct VerticalEdges {
LayoutUnit top;
LayoutUnit bottom;
LayoutUnit height() const { return top + bottom; }
};
struct Edges {
HorizontalEdges horizontal;
VerticalEdges vertical;
};
struct ContentWidthAndMargin {
LayoutUnit contentWidth;
UsedHorizontalMargin usedMargin;
ComputedHorizontalMargin computedMargin;
};
struct ContentHeightAndMargin {
LayoutUnit contentHeight;
UsedVerticalMargin::NonCollapsedValues nonCollapsedMargin;
};
struct HorizontalGeometry {
LayoutUnit left;
LayoutUnit right;
ContentWidthAndMargin contentWidthAndMargin;
};
struct VerticalGeometry {
LayoutUnit top;
LayoutUnit bottom;
ContentHeightAndMargin contentHeightAndMargin;
};
struct HorizontalConstraints {
LayoutUnit logicalRight() const { return logicalLeft + logicalWidth; }
LayoutUnit logicalLeft;
LayoutUnit logicalWidth;
};
struct OutOfFlowHorizontalConstraints {
HorizontalConstraints value;
// Borders and paddings are resolved against the containing block's content box as if the box was an in-flow box.
LayoutUnit borderAndPaddingSpecificWidth;
};
struct VerticalConstraints {
LayoutUnit logicalTop;
Optional<LayoutUnit> logicalHeight;
};
struct OverrideHorizontalValues {
Optional<LayoutUnit> width;
Optional<UsedHorizontalMargin> margin;
};
struct OverrideVerticalValues {
// Consider collapsing it.
Optional<LayoutUnit> height;
};
inline LayoutUnit toLayoutUnit(InlineLayoutUnit value)
{
return LayoutUnit { value };
}
inline LayoutUnit ceiledLayoutUnit(InlineLayoutUnit value)
{
return LayoutUnit::fromFloatCeil(value);
}
inline LayoutPoint toLayoutPoint(const InlineLayoutPoint& point)
{
return LayoutPoint { point };
}
inline LayoutRect toLayoutRect(const InlineLayoutRect& rect)
{
return LayoutRect { rect };
}
inline InlineLayoutUnit maxInlineLayoutUnit()
{
#if USE_FLOAT_AS_INLINE_LAYOUT_UNIT
return std::numeric_limits<float>::max();
#else
return LayoutUnit::max();
#endif
}
}
}
#endif