| /* |
| * 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 "InlineFormattingState.h" |
| #include "InlineItem.h" |
| #include "LayoutInlineTextBox.h" |
| |
| namespace WebCore { |
| namespace Layout { |
| |
| class InlineTextItem : public InlineItem { |
| public: |
| static void createAndAppendTextItems(InlineItems&, const InlineTextBox&); |
| |
| unsigned start() const { return m_startOrPosition; } |
| unsigned end() const { return start() + length(); } |
| unsigned length() const { return m_length; } |
| |
| bool isWhitespace() const { return m_textItemType == TextItemType::Whitespace; } |
| bool isCollapsible() const { return m_isCollapsible; } |
| Optional<InlineLayoutUnit> width() const { return m_hasWidth ? makeOptional(m_width) : Optional<InlineLayoutUnit> { }; } |
| bool isEmptyContent() const; |
| |
| const InlineTextBox& inlineTextBox() const { return downcast<InlineTextBox>(layoutBox()); } |
| |
| InlineTextItem left(unsigned length) const; |
| InlineTextItem right(unsigned length) const; |
| |
| private: |
| using InlineItem::TextItemType; |
| |
| InlineTextItem(const InlineTextBox&, unsigned start, unsigned length, Optional<InlineLayoutUnit> width, TextItemType); |
| InlineTextItem(const InlineTextBox&); |
| |
| static InlineTextItem createWhitespaceItem(const InlineTextBox&, unsigned start, unsigned length, Optional<InlineLayoutUnit> width); |
| static InlineTextItem createNonWhitespaceItem(const InlineTextBox&, unsigned start, unsigned length, Optional<InlineLayoutUnit> width); |
| static InlineTextItem createEmptyItem(const InlineTextBox&); |
| }; |
| |
| inline InlineTextItem InlineTextItem::createWhitespaceItem(const InlineTextBox& inlineTextBox, unsigned start, unsigned length, Optional<InlineLayoutUnit> width) |
| { |
| return { inlineTextBox, start, length, width, TextItemType::Whitespace }; |
| } |
| |
| inline InlineTextItem InlineTextItem::createNonWhitespaceItem(const InlineTextBox& inlineTextBox, unsigned start, unsigned length, Optional<InlineLayoutUnit> width) |
| { |
| return { inlineTextBox, start, length, width, TextItemType::NonWhitespace }; |
| } |
| |
| inline InlineTextItem InlineTextItem::createEmptyItem(const InlineTextBox& inlineTextBox) |
| { |
| return { inlineTextBox }; |
| } |
| |
| inline InlineTextItem::InlineTextItem(const InlineTextBox& inlineTextBox, unsigned start, unsigned length, Optional<InlineLayoutUnit> width, TextItemType textItemType) |
| : InlineItem(inlineTextBox, Type::Text) |
| { |
| m_startOrPosition = start; |
| m_length = length; |
| m_hasWidth = !!width; |
| m_isCollapsible = textItemType == TextItemType::Whitespace && inlineTextBox.style().collapseWhiteSpace(); |
| m_width = width.valueOr(0); |
| m_textItemType = textItemType; |
| } |
| |
| inline InlineTextItem::InlineTextItem(const InlineTextBox& inlineTextBox) |
| : InlineItem(inlineTextBox, Type::Text) |
| { |
| } |
| |
| inline InlineTextItem InlineTextItem::left(unsigned length) const |
| { |
| RELEASE_ASSERT(length <= this->length()); |
| ASSERT(m_textItemType != TextItemType::Undefined); |
| ASSERT(length); |
| return { inlineTextBox(), start(), length, WTF::nullopt, m_textItemType }; |
| } |
| |
| inline InlineTextItem InlineTextItem::right(unsigned length) const |
| { |
| RELEASE_ASSERT(length <= this->length()); |
| ASSERT(m_textItemType != TextItemType::Undefined); |
| ASSERT(length); |
| return { inlineTextBox(), end() - length, length, WTF::nullopt, m_textItemType }; |
| } |
| |
| } |
| } |
| |
| SPECIALIZE_TYPE_TRAITS_INLINE_ITEM(InlineTextItem, isText()) |
| |
| #endif |