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feat: Arabic/Farsi/Urdu bidi reordering and contextual shaping — PR 1/3 (#2541)

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Co-authored-by: Uri Tauber <uritaube@gmail.com>
This commit is contained in:
Husam Younis
2026-07-13 16:02:21 +03:00
committed by GitHub
co-authored by Uri Tauber
parent 552b2683e6
commit 932a472835
18 changed files with 1087 additions and 62 deletions
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lib/EpdFont/SdCardFont.cpp
+10 -5
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@@ -1195,7 +1195,8 @@ int SdCardFont::fetchAdvancesForCodepoints(uint32_t* codepoints, uint32_t cpCoun
}
template <typename Iter>
int SdCardFont::buildAdvanceTableRange(Iter begin, Iter end, bool includeSpace, bool includeHyphen, uint8_t styleMask) {
int SdCardFont::buildAdvanceTableRange(Iter begin, Iter end, bool includeSpace, bool includeHyphen, uint8_t styleMask,
const char* extraText) {
if (!loaded_) return -1;
styleMask = resolveStyleMask(styleMask);
if (styleMask == 0) return 0;
@@ -1215,6 +1216,9 @@ int SdCardFont::buildAdvanceTableRange(Iter begin, Iter end, bool includeSpace,
for (auto it = begin; it != end && !hitCap; ++it) {
hitCap = collectUniqueCodepoints(asCStr(*it), codepoints, cpCount, MAX_UNIQUE_CODEPOINTS);
}
if (extraText && !hitCap) {
hitCap = collectUniqueCodepoints(extraText, codepoints, cpCount, MAX_UNIQUE_CODEPOINTS);
}
if (includeSpace && std::none_of(codepoints, codepoints + cpCount, [](uint32_t c) { return c == ' '; }))
codepoints[cpCount++] = ' ';
@@ -1232,12 +1236,13 @@ int SdCardFont::buildAdvanceTableRange(Iter begin, Iter end, bool includeSpace,
return totalMissed;
}
int SdCardFont::buildAdvanceTable(const char* utf8Text, uint8_t styleMask) {
return buildAdvanceTableRange(&utf8Text, &utf8Text + 1, false, false, styleMask);
int SdCardFont::buildAdvanceTable(const char* utf8Text, uint8_t styleMask, const char* extraText) {
return buildAdvanceTableRange(&utf8Text, &utf8Text + 1, false, false, styleMask, extraText);
}
int SdCardFont::buildAdvanceTable(const std::vector<std::string>& words, bool includeHyphen, uint8_t styleMask) {
return buildAdvanceTableRange(words.begin(), words.end(), words.size() > 1, includeHyphen, styleMask);
int SdCardFont::buildAdvanceTable(const std::vector<std::string>& words, bool includeHyphen, uint8_t styleMask,
const char* extraText) {
return buildAdvanceTableRange(words.begin(), words.end(), words.size() > 1, includeHyphen, styleMask, extraText);
}
// --- Stats ---