mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-04 22:57:50 +03:00
8824c87490
## Summary * Adds (optional) Hyphenation for English, French, German, Russian languages ## Additional Context * Included hyphenation dictionaries add approximately 280kb to the flash usage (German alone takes 200kb) * Trie encoded dictionaries are adopted from hypher project (https://github.com/typst/hypher) * Soft hyphens (and other explicit hyphens) take precedence over dict-based hyphenation. Overall, the hyphenation rules are quite aggressive, as I believe it makes more sense on our smaller screen. --------- Co-authored-by: Dave Allie <dave@daveallie.com>
48 lines
2.1 KiB
C++
48 lines
2.1 KiB
C++
#pragma once
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#include <EpdFontFamily.h>
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#include <functional>
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#include <list>
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#include <memory>
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#include <string>
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#include <vector>
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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::list<std::string> words;
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std::list<EpdFontFamily::Style> wordStyles;
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TextBlock::Style style;
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bool extraParagraphSpacing;
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bool hyphenationEnabled;
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void applyParagraphIndent();
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std::vector<size_t> computeLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth, int spaceWidth,
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std::vector<uint16_t>& wordWidths);
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std::vector<size_t> computeHyphenatedLineBreaks(const GfxRenderer& renderer, int fontId, int pageWidth,
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int spaceWidth, std::vector<uint16_t>& wordWidths);
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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, int spaceWidth, const std::vector<uint16_t>& wordWidths,
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const std::vector<size_t>& lineBreakIndices,
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const std::function<void(std::shared_ptr<TextBlock>)>& processLine);
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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 TextBlock::Style style, const bool extraParagraphSpacing,
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const bool hyphenationEnabled = false)
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: style(style), extraParagraphSpacing(extraParagraphSpacing), hyphenationEnabled(hyphenationEnabled) {}
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~ParsedText() = default;
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void addWord(std::string word, EpdFontFamily::Style fontStyle);
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void setStyle(const TextBlock::Style style) { this->style = style; }
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TextBlock::Style getStyle() const { return style; }
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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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}; |