71 lines
3.5 KiB
C++
71 lines
3.5 KiB
C++
#pragma once
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#include <EpdFontFamily.h>
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#include <functional>
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#include <memory>
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#include <string>
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#include <vector>
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#include "blocks/BlockStyle.h"
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#include "blocks/TextBlock.h"
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class GfxRenderer;
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class ParsedText {
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std::vector<std::string> words;
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std::vector<EpdFontFamily::Style> wordStyles;
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std::vector<bool> wordContinues; // true = word attaches to previous with no break
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std::vector<bool> wordNoSpaceBefore; // true = may break before token, but no synthetic space when joined
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std::vector<bool> wordIsFocusSuffix; // true = token is the regular tail of a focus bold-prefix split
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BlockStyle blockStyle;
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bool extraParagraphSpacing;
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bool hyphenationEnabled;
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bool focusReadingEnabled;
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bool isNaturalAlign;
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bool hasRtlWord;
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std::vector<std::string> reorderedWordsScratch;
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std::vector<EpdFontFamily::Style> reorderedStylesScratch;
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std::vector<uint16_t> reorderedWidthsScratch;
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std::vector<bool> reorderedContinuesScratch;
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std::vector<bool> reorderedNoSpaceBeforeScratch;
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std::vector<bool> reorderedFocusSuffixScratch;
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std::vector<uint16_t> visualOrderScratch;
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int resolveFirstLineIndent(bool isFirstLine, const GfxRenderer& renderer, int fontId) const;
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std::vector<size_t> computeLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth,
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std::vector<uint16_t>& wordWidths, std::vector<bool>& continuesVec,
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std::vector<bool>& noSpaceBeforeVec);
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std::vector<size_t> computeHyphenatedLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth,
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std::vector<uint16_t>& wordWidths, std::vector<bool>& continuesVec,
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std::vector<bool>& noSpaceBeforeVec);
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bool hyphenateWordAtIndex(size_t wordIndex, int availableWidth, const GfxRenderer& renderer, int fontId,
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std::vector<uint16_t>& wordWidths, bool allowFallbackBreaks);
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void extractLine(size_t breakIndex, int pageWidth, const std::vector<uint16_t>& wordWidths,
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const std::vector<bool>& continuesVec, const std::vector<bool>& noSpaceBeforeVec,
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const std::vector<size_t>& lineBreakIndices,
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const std::function<void(std::shared_ptr<TextBlock>)>& processLine, const GfxRenderer& renderer,
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int fontId);
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std::vector<uint16_t> calculateWordWidths(const GfxRenderer& renderer, int fontId);
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public:
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explicit ParsedText(const bool extraParagraphSpacing, const bool hyphenationEnabled = false,
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const bool focusReadingEnabled = false, const BlockStyle& blockStyle = BlockStyle())
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: blockStyle(blockStyle),
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extraParagraphSpacing(extraParagraphSpacing),
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hyphenationEnabled(hyphenationEnabled),
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focusReadingEnabled(focusReadingEnabled),
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isNaturalAlign(false),
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hasRtlWord(false) {}
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~ParsedText() = default;
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void addWord(std::string word, EpdFontFamily::Style fontStyle, bool underline = false, bool attachToPrevious = false);
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void setBlockStyle(const BlockStyle& blockStyle) { this->blockStyle = blockStyle; }
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BlockStyle& getBlockStyle() { return blockStyle; }
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size_t size() const { return words.size(); }
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bool isEmpty() const { return words.empty(); }
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void layoutAndExtractLines(const GfxRenderer& renderer, int fontId, uint16_t viewportWidth,
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const std::function<void(std::shared_ptr<TextBlock>)>& processLine,
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bool includeLastLine = true);
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};
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