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Codechange: Pass face index as font os_handle for FreeType fonts. (#11073) 

This allows fallback font detection to test the specific face within the
font rather instead of only the first.
This commit is contained in:
PeterN 2023-06-27 12:30:46 +01:00 committed by GitHub
parent 794b642b9a
commit 8465559488
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 14 additions and 5 deletions
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4
src/fontcache/freetypefontcache.cpp
View File

@ -141,7 +141,9 @@ void LoadFreeTypeFont(FontSize fs)
FT_Face face = nullptr;
/* If font is an absolute path to a ttf, try loading that first. */
FT_Error error = FT_New_Face(_library, font_name, 0, &face);
int32_t index = 0;
if (settings->os_handle != nullptr) index = *static_cast<const int32_t *>(settings->os_handle);
FT_Error error = FT_New_Face(_library, font_name, index, &face);
if (error != FT_Err_Ok) {
/* Check if font is a relative filename in one of our search-paths. */

15
src/os/unix/font_unix.cpp
View File

@ -111,8 +111,8 @@ bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_is
/* First create a pattern to match the wanted language. */
FcPattern *pat = FcNameParse((const FcChar8 *)lang.c_str());
/* We only want to know the filename. */
FcObjectSet *os = FcObjectSetBuild(FC_FILE, FC_SPACING, FC_SLANT, FC_WEIGHT, nullptr);
/* We only want to know these attributes. */
FcObjectSet *os = FcObjectSetBuild(FC_FILE, FC_INDEX, FC_SPACING, FC_SLANT, FC_WEIGHT, nullptr);
/* Get the list of filenames matching the wanted language. */
FcFontSet *fs = FcFontList(nullptr, pat, os);
@ -123,6 +123,7 @@ bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_is
if (fs != nullptr) {
int best_weight = -1;
const char *best_font = nullptr;
int best_index = 0;
for (int i = 0; i < fs->nfont; i++) {
FcPattern *font = fs->fonts[i];
@ -146,7 +147,12 @@ bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_is
FcPatternGetInteger(font, FC_WEIGHT, 0, &value);
if (value <= best_weight) continue;
callback->SetFontNames(settings, (const char *)file);
/* Possible match based on attributes, get index. */
int32_t index;
res = FcPatternGetInteger(font, FC_INDEX, 0, &index);
if (res != FcResultMatch) continue;
callback->SetFontNames(settings, (const char *)file, &index);
bool missing = callback->FindMissingGlyphs();
Debug(fontcache, 1, "Font \"{}\" misses{} glyphs", (char *)file, missing ? "" : " no");
@ -154,12 +160,13 @@ bool SetFallbackFont(FontCacheSettings *settings, const std::string &language_is
if (!missing) {
best_weight = value;
best_font = (const char *)file;
best_index = index;
}
}
if (best_font != nullptr) {
ret = true;
callback->SetFontNames(settings, best_font);
callback->SetFontNames(settings, best_font, &best_index);
InitFontCache(callback->Monospace());
}