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/*
* Copyright (C) 2023 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 <WebCore/InlineLine.h>
#include <WebCore/InlineLineTypes.h>
#include <WebCore/LayoutUnits.h>
#include <WebCore/PlacedFloats.h>
namespace WebCore {
namespace Layout {
struct LineLayoutResult {
using PlacedFloatList = PlacedFloats::List;
using SuspendedFloatList = Vector<const Box*>;
InlineItemRange inlineItemRange;
Line::RunList runs;
struct FloatContent {
PlacedFloatList placedFloats;
SuspendedFloatList suspendedFloats;
OptionSet<UsedFloat> hasIntrusiveFloat { };
};
FloatContent floatContent { };
struct ContentGeometry {
InlineLayoutUnit logicalLeft { 0.f };
InlineLayoutUnit logicalWidth { 0.f };
InlineLayoutUnit logicalRightIncludingNegativeMargin { 0.f }; // Note that with negative horizontal margin value, contentLogicalLeft + contentLogicalWidth is not necessarily contentLogicalRight.
std::optional<InlineLayoutUnit> trailingOverflowingContentWidth { };
};
ContentGeometry contentGeometry { };
struct LineGeometry {
InlineLayoutPoint logicalTopLeft;
InlineLayoutUnit logicalWidth { 0.f };
InlineLayoutUnit initialLogicalLeft { 0.f };
InlineLayoutUnit intrusiveFloatsOffset { 0.f }; // Inherited floats from parent formatting context offseting line box.
std::optional<InlineLayoutUnit> initialLetterClearGap { };
};
LineGeometry lineGeometry { };
struct HangingContent {
bool shouldContributeToScrollableOverflow { false };
InlineLayoutUnit logicalWidth { 0.f };
InlineLayoutUnit hangablePunctuationStartWidth { 0.f };
};
HangingContent hangingContent { };
struct Directionality {
Vector<int32_t> visualOrderList;
TextDirection inlineBaseDirection { TextDirection::LTR };
};
Directionality directionality { };
struct IsFirstLast {
IsFirstFormattedLine isFirstFormattedLine { IsFirstFormattedLine::Yes };
bool isLastLineWithInlineContent { true };
};
IsFirstLast isFirstLast { };
struct Ruby {
HashMap<const Box*, InlineLayoutUnit> baseAlignmentOffsetList { };
InlineLayoutUnit annotationAlignmentOffset { 0.f };
};
Ruby ruby { };
// Misc
enum InlineContentEnding : uint8_t { Generic, Hyphen, LineBreak };
std::optional<InlineContentEnding> inlineContentEnding { }; // No value means line does not have any inline content (either float, out-of-flow or block inside inline)
enum class InflowContentType : uint8_t { Inline, Block };
std::optional<InflowContentType> inflowContentType() const
{
if (inlineContentEnding.has_value())
return InflowContentType::Inline;
if (!runs.isEmpty() && runs.last().isBlock())
return InflowContentType::Block;
return { };
}
bool hasContentfulInFlowContent() const { return inflowContentType().has_value(); }
bool hasContentfulInlineContent() const { return hasContentfulInFlowContent() && *inflowContentType() == InflowContentType::Inline; }
bool isBlockContent() const { return hasContentfulInFlowContent() && *inflowContentType() == InflowContentType::Block; }
bool endsWithHyphen() const { return inlineContentEnding && *inlineContentEnding == InlineContentEnding::Hyphen; }
bool endsWithLineBreak() const { return inlineContentEnding && *inlineContentEnding == InlineContentEnding::LineBreak; }
size_t nonSpanningInlineLevelBoxCount { 0 };
InlineLayoutUnit trimmedTrailingWhitespaceWidth { 0.f }; // only used for line-break: after-white-space currently
InlineLayoutUnit firstLineStartTrim { 0.f }; // This is how much text-box-trim: start adjusts the first line box. We only need it to adjust the initial letter float position (which will not be needed once we drop the float behavior)
std::optional<InlineLayoutUnit> hintForNextLineTopToAvoidIntrusiveFloat { }; // This is only used for cases when intrusive floats prevent any content placement at current vertical position.
};
}
}
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