static SkScalar drawCharacter(SkCanvas* canvas, uint32_t character, SkScalar x,
SkScalar y, SkPaint& paint, SkFontMgr* fm,
const char* fontName, const char* bcp47[], int bcp47Count,
const SkFontStyle& fontStyle) {
// find typeface containing the requested character and draw it
SkString ch;
ch.appendUnichar(character);
SkTypeface* typeface = fm->matchFamilyStyleCharacter(fontName, fontStyle,
bcp47, bcp47Count, character);
SkSafeUnref(paint.setTypeface(typeface));
x = drawString(canvas, ch, x, y, paint) + 20;
if (NULL == typeface) {
return x;
}
// repeat the process, but this time use the family name of the typeface
// from the first pass. This emulates the behavior in Blink where it
// it expects to get the same glyph when following this pattern.
SkString familyName;
typeface->getFamilyName(&familyName);
SkTypeface* typefaceCopy = fm->legacyCreateTypeface(familyName.c_str(), typeface->style());
SkSafeUnref(paint.setTypeface(typefaceCopy));
return drawString(canvas, ch, x, y, paint) + 20;
}
Typeface* Typeface::createFromFamilies(const std::vector<FontFamily*>& families) {
Typeface* result = new Typeface;
result->fFontCollection = new FontCollection(families);
if (families.empty()) {
ALOGW("createFromFamilies creating empty collection");
result->fSkiaStyle = SkTypeface::kNormal;
} else {
const FontStyle defaultStyle;
FontFamily* firstFamily = reinterpret_cast<FontFamily*>(families[0]);
MinikinFont* mf = firstFamily->getClosestMatch(defaultStyle).font;
if (mf != NULL) {
SkTypeface* skTypeface = reinterpret_cast<MinikinFontSkia*>(mf)->GetSkTypeface();
// TODO: probably better to query more precise style from family, will be important
// when we open up API to access 100..900 weights
result->fSkiaStyle = skTypeface->style();
} else {
result->fSkiaStyle = SkTypeface::kNormal;
}
}
result->fBaseWeight = 400;
resolveStyle(result);
return result;
}