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feat(epub): improve text-decoration support (#2397)

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Co-authored-by: JiangoJ <jiangj2620@gmail.com>
This commit is contained in:
Leopoldo Pla Sempere
2026-07-02 12:35:24 +03:00
committed by GitHub
co-authored by JiangoJ
parent 5c86bfe1fd
commit 57447a56a6
11 changed files with 183 additions and 81 deletions
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lib/EpdFont/EpdFontFamily.cpp
+1 -1
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@@ -1,7 +1,7 @@
#include "EpdFontFamily.h"
const EpdFont* EpdFontFamily::getFont(const Style style) const {
// Extract font style bits (ignore UNDERLINE bit for font selection)
// Extract font style bits; render-time overlay bits do not affect font selection.
const bool hasBold = (style & BOLD) != 0;
const bool hasItalic = (style & ITALIC) != 0;
lib/EpdFont/EpdFontFamily.h
+4
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@@ -17,6 +17,7 @@ class EpdFontFamily {
SUP = 16, // superscript: glyph scaled 50%, raised ~40% of ascender
SUB = 32, // subscript: glyph scaled 50%, lowered ~25% of ascender
};
static constexpr uint8_t TEXT_DECORATION_MASK = static_cast<uint8_t>(UNDERLINE | STRIKETHROUGH);
explicit EpdFontFamily(const EpdFont* regular, const EpdFont* bold = nullptr, const EpdFont* italic = nullptr,
const EpdFont* boldItalic = nullptr)
@@ -27,6 +28,9 @@ class EpdFontFamily {
const EpdGlyph* getGlyph(uint32_t cp, Style style = REGULAR) const;
int8_t getKerning(uint32_t leftCp, uint32_t rightCp, Style style = REGULAR) const;
uint32_t applyLigatures(uint32_t cp, const char*& text, Style style = REGULAR) const;
static constexpr bool hasTextDecoration(const Style style) {
return (static_cast<uint8_t>(style) & TEXT_DECORATION_MASK) != 0;
}
private:
const EpdFont* regular;