item_builder.hpp

[詳解]

#ifndef TYPESET_INL_ITEM_BUILDER_HPP
#define TYPESET_INL_ITEM_BUILDER_HPP
 
#include <vector>
 
#include "typeset/font/font_set.hpp"
#include "typeset/inl/annotation.hpp"
#include "typeset/inl/line_item.hpp"
#include "typeset/inl/shaped.hpp"
#include "typeset/text/hyphenation.hpp"
#include "typeset/style.hpp"
#include "typeset/writing_mode.hpp"
 
namespace typeset::inl {
 
struct ItemBuildContext {
    font::FontSet& fonts;
    WritingMode writingMode = WritingMode::HorizontalTb;
    TextOrientation orientation = TextOrientation::Mixed;
    const std::vector<TextStyle>* styles = nullptr;   
    const TextStyle* baseStyle = nullptr;
    float letterSpacing = 0.0f;
    bool preserveSpaces = false;
    WrapMode wrap = WrapMode::Mixed;
    const std::vector<TabStop>* tabStops = nullptr;
    int tabWidth = 4;
    const text::HyphenationDictionary* hyphenation = nullptr;
    float hyphenPenalty = 50.0f;
    int hyphenMinLeft = 2;
    int hyphenMinRight = 3;
};
 
std::vector<LineItem> buildLineItems(const ShapedText& shaped,
                                     const std::vector<Annotation>& annotations,
                                     const SpacingOptions& opts,
                                     const ItemBuildContext& ctx);
 
inline float annotationSide(WritingMode wm) { return isVertical(wm) ? 1.0f : -1.0f; }
 
} // namespace typeset::inl
 
#endif // TYPESET_INL_ITEM_BUILDER_HPP