| /* |
| * Copyright (C) 2019-2021 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 "InlineIteratorBox.h" |
| #include "RenderText.h" |
| |
| namespace WebCore { |
| |
| namespace InlineIterator { |
| |
| class TextBox : public Box { |
| public: |
| TextBox(PathVariant&&); |
| |
| bool hasHyphen() const; |
| StringView text() const; |
| |
| unsigned start() const; |
| unsigned end() const; |
| unsigned length() const; |
| |
| unsigned offsetForPosition(float x, bool includePartialGlyphs = true) const; |
| float positionForOffset(unsigned) const; |
| |
| TextBoxSelectableRange selectableRange() const; |
| LayoutRect selectionRect(unsigned start, unsigned end) const; |
| |
| bool isCombinedText() const; |
| const FontCascade& fontCascade() const; |
| |
| TextRun createTextRun(CreateTextRunMode = CreateTextRunMode::Painting) const; |
| |
| const RenderText& renderer() const { return downcast<RenderText>(Box::renderer()); } |
| |
| // FIXME: Remove. For intermediate porting steps only. |
| const LegacyInlineTextBox* legacyInlineBox() const { return downcast<LegacyInlineTextBox>(Box::legacyInlineBox()); } |
| |
| // This returns the next text box generated for the same RenderText/Layout::InlineTextBox. |
| TextBoxIterator nextTextBox() const; |
| }; |
| |
| class TextBoxIterator : public LeafBoxIterator { |
| public: |
| TextBoxIterator() { } |
| TextBoxIterator(Box::PathVariant&&); |
| TextBoxIterator(const Box&); |
| |
| TextBoxIterator& operator++() { return traverseNextTextBox(); } |
| |
| const TextBox& operator*() const { return get(); } |
| const TextBox* operator->() const { return &get(); } |
| |
| // This traverses to the next text box generated for the same RenderText/Layout::InlineTextBox. |
| TextBoxIterator& traverseNextTextBox(); |
| |
| private: |
| BoxIterator& traverseNextOnLine() = delete; |
| BoxIterator& traversePreviousOnLine() = delete; |
| BoxIterator& traverseNextOnLineIgnoringLineBreak() = delete; |
| BoxIterator& traversePreviousOnLineIgnoringLineBreak() = delete; |
| |
| const TextBox& get() const { return downcast<TextBox>(m_box); } |
| }; |
| |
| class TextBoxRange { |
| public: |
| TextBoxRange(TextBoxIterator begin) |
| : m_begin(begin) |
| { |
| } |
| |
| TextBoxIterator begin() const { return m_begin; } |
| EndIterator end() const { return { }; } |
| |
| private: |
| TextBoxIterator m_begin; |
| }; |
| |
| TextBoxIterator firstTextBoxFor(const RenderText&); |
| TextBoxIterator textBoxFor(const LegacyInlineTextBox*); |
| #if ENABLE(LAYOUT_FORMATTING_CONTEXT) |
| TextBoxIterator textBoxFor(const LayoutIntegration::InlineContent&, const InlineDisplay::Box&); |
| TextBoxIterator textBoxFor(const LayoutIntegration::InlineContent&, size_t boxIndex); |
| #endif |
| TextBoxRange textBoxesFor(const RenderText&); |
| |
| inline bool TextBox::hasHyphen() const |
| { |
| return WTF::switchOn(m_pathVariant, [](auto& path) { |
| return path.hasHyphen(); |
| }); |
| } |
| |
| inline TextBox::TextBox(PathVariant&& path) |
| : Box(WTFMove(path)) |
| { |
| } |
| |
| inline StringView TextBox::text() const |
| { |
| return WTF::switchOn(m_pathVariant, [](auto& path) { |
| return path.text(); |
| }); |
| } |
| |
| inline unsigned TextBox::start() const |
| { |
| return WTF::switchOn(m_pathVariant, [](auto& path) { |
| return path.start(); |
| }); |
| } |
| |
| inline unsigned TextBox::end() const |
| { |
| return WTF::switchOn(m_pathVariant, [](auto& path) { |
| return path.end(); |
| }); |
| } |
| |
| inline unsigned TextBox::length() const |
| { |
| return WTF::switchOn(m_pathVariant, [](auto& path) { |
| return path.length(); |
| }); |
| } |
| |
| inline TextBoxSelectableRange TextBox::selectableRange() const |
| { |
| return WTF::switchOn(m_pathVariant, [&](auto& path) { |
| return path.selectableRange(); |
| }); |
| } |
| |
| inline TextRun TextBox::createTextRun(CreateTextRunMode mode) const |
| { |
| return WTF::switchOn(m_pathVariant, [&](auto& path) { |
| return path.createTextRun(mode); |
| }); |
| } |
| |
| } |
| } |
| |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::InlineIterator::TextBox) |
| static bool isType(const WebCore::InlineIterator::Box& box) { return box.isText(); } |
| SPECIALIZE_TYPE_TRAITS_END() |
| |
| SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::InlineIterator::TextBoxIterator) |
| static bool isType(const WebCore::InlineIterator::BoxIterator& box) { return !box || box->isText(); } |
| SPECIALIZE_TYPE_TRAITS_END() |
| |