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(svn r23279) -Codechange: try to prevent slanted and skinny fonts with fontconfig. This should generally make the fallback choice better legible

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rubidium 2011-11-20 12:10:41 +00:00
parent 9835600cd1
commit 7f390964c3
1 changed files with 21 additions and 3 deletions
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24
src/fontcache.cpp
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@ -709,7 +709,7 @@ bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, i
/* First create a pattern to match the wanted language. */
FcPattern *pat = FcNameParse((FcChar8*)lang);
/* We only want to know the filename. */
FcObjectSet *os = FcObjectSetBuild(FC_FILE, FC_SPACING, NULL);
FcObjectSet *os = FcObjectSetBuild(FC_FILE, FC_SPACING, FC_SLANT, FC_WEIGHT, NULL);
/* Get the list of filenames matching the wanted language. */
FcFontSet *fs = FcFontList(NULL, pat, os);
@ -718,6 +718,9 @@ bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, i
FcPatternDestroy(pat);
if (fs != NULL) {
int best_weight = -1;
const char *best_font = NULL;
for (int i = 0; i < fs->nfont; i++) {
FcPattern *font = fs->fonts[i];
@ -727,21 +730,36 @@ bool SetFallbackFont(FreeTypeSettings *settings, const char *language_isocode, i
continue;
}
/* Get a font with the right spacing .*/
int value = 0;
FcPatternGetInteger(font, FC_SPACING, 0, &value);
if (callback->Monospace() != (value == FC_MONO) && value != FC_DUAL) continue;
/* Do not use those that explicitly say they're slanted. */
FcPatternGetInteger(font, FC_SLANT, 0, &value);
if (value != 0) continue;
/* We want the fatter font as they look better at small sizes. */
FcPatternGetInteger(font, FC_WEIGHT, 0, &value);
if (value <= best_weight) continue;
callback->SetFontNames(settings, (const char*)file);
bool missing = callback->FindMissingGlyphs(NULL);
DEBUG(freetype, 1, "Font \"%s\" misses%s glyphs", file, missing ? "" : " no");
if (!missing) {
ret = true;
break;
best_weight = value;
best_font = (const char *)file;
}
}
if (best_font != NULL) {
ret = true;
callback->SetFontNames(settings, best_font);
InitFreeType(callback->Monospace());
}
/* Clean up the list of filenames. */
FcFontSetDestroy(fs);
}