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/*
* 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
#include "InlineItem.h"
#include "LayoutInlineTextBox.h"
namespace WebCore {
namespace Layout {
class InlineItemsBuilder;
using InlineItems = Vector<InlineItem>;
class InlineTextItem : public InlineItem {
public:
static InlineTextItem createWhitespaceItem(const InlineTextBox&, unsigned start, unsigned length, UBiDiLevel, bool isWordSeparator, std::optional<InlineLayoutUnit> width);
static InlineTextItem createNonWhitespaceItem(const InlineTextBox&, unsigned start, unsigned length, UBiDiLevel, bool hasTrailingSoftHyphen, std::optional<InlineLayoutUnit> width);
static InlineTextItem createEmptyItem(const InlineTextBox&);
unsigned start() const { return m_startOrPosition; }
unsigned end() const { return start() + length(); }
unsigned length() const { return m_length; }
bool isEmpty() const { return !length() && m_textItemType == TextItemType::Undefined; }
bool isWhitespace() const { return m_textItemType == TextItemType::Whitespace; }
bool isWordSeparator() const { return m_isWordSeparator; }
bool isZeroWidthSpaceSeparator() const;
bool isQuirkNonBreakingSpace() const;
bool isFullyTrimmable() const;
bool hasTrailingSoftHyphen() const { return m_hasTrailingSoftHyphen; }
std::optional<InlineLayoutUnit> width() const { return m_hasWidth ? std::make_optional(m_width) : std::optional<InlineLayoutUnit> { }; }
const InlineTextBox& inlineTextBox() const { return downcast<InlineTextBox>(layoutBox()); }
InlineTextItem left(unsigned length) const;
InlineTextItem right(unsigned length, std::optional<InlineLayoutUnit> width) const;
static bool shouldPreserveSpacesAndTabs(const InlineTextItem&);
private:
friend class InlineItemsBuilder;
using InlineItem::TextItemType;
InlineTextItem split(size_t leftSideLength);
InlineTextItem(const InlineTextBox&, unsigned start, unsigned length, UBiDiLevel, bool hasTrailingSoftHyphen, bool isWordSeparator, std::optional<InlineLayoutUnit> width, TextItemType);
explicit InlineTextItem(const InlineTextBox&);
};
inline InlineTextItem InlineTextItem::createWhitespaceItem(const InlineTextBox& inlineTextBox, unsigned start, unsigned length, UBiDiLevel bidiLevel, bool isWordSeparator, std::optional<InlineLayoutUnit> width)
{
return { inlineTextBox, start, length, bidiLevel, false, isWordSeparator, width, TextItemType::Whitespace };
}
inline InlineTextItem InlineTextItem::createNonWhitespaceItem(const InlineTextBox& inlineTextBox, unsigned start, unsigned length, UBiDiLevel bidiLevel, bool hasTrailingSoftHyphen, std::optional<InlineLayoutUnit> width)
{
// FIXME: Use the following list of non-whitespace characters to set the "isWordSeparator" bit: noBreakSpace, ethiopicWordspace, aegeanWordSeparatorLine aegeanWordSeparatorDot ugariticWordDivider.
return { inlineTextBox, start, length, bidiLevel, hasTrailingSoftHyphen, false, width, TextItemType::NonWhitespace };
}
inline InlineTextItem InlineTextItem::createEmptyItem(const InlineTextBox& inlineTextBox)
{
ASSERT(!inlineTextBox.content().length());
return InlineTextItem { inlineTextBox };
}
}
}
SPECIALIZE_TYPE_TRAITS_INLINE_ITEM(InlineTextItem, isText())
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