Add Noto fallback fonts.

Look up fallback fonts by unicode script, with a flag to select the serif or
sans-serif font style where such variants exist.

Move all builtin fonts into fitz namespace.

1 files changed, 335 insertions, 0 deletions

diff --git a/source/fitz/noto.c b/source/fitz/noto.c
new file mode 100644
index 00000000..f02bc524
--- /dev/null
+++ b/source/fitz/noto.c
@@ -0,0 +1,335 @@
+#include "mupdf/fitz.h"
+
+/*
+	Base 14 PDF fonts from URW.
+	Noto fonts from Google.
+	DroidSansFallback from Android for CJK.
+
+	Define TOFU to skip all the Noto fonts except CJK.
+
+	Define TOFU_CJK to skip CJK font.
+	Define TOFU_CJK_EXT to skip CJK Extension A support.
+
+	Define TOFU_EMOJI to skip emoji font.
+	Define TOFU_HISTORIC to skip ancient/historic scripts.
+	Define TOFU_SYMBOL to skip symbol font.
+*/
+
+#ifdef NOTO_SMALL
+#define TOFU_CJK_EXT
+#define TOFU_EMOJI
+#define TOFU_HISTORIC
+#define TOFU_SYMBOL
+#endif
+
+#include "gen_font_base14.h"
+
+#ifdef NOCJK
+#define TOFU_CJK
+#endif
+
+#ifdef TOFU
+#define TOFU_EMOJI
+#define TOFU_HISTORIC
+#define TOFU_SYMBOL
+#endif
+
+#ifndef TOFU_CJK
+#ifndef TOFU_CJK_EXT
+#include "gen_font_cjk_full.h"
+#else
+#include "gen_font_cjk.h"
+#endif
+#endif
+
+#ifndef TOFU
+#include "gen_font_noto.h"
+#endif
+
+unsigned char *
+fz_lookup_base14_font(fz_context *ctx, const char *name, unsigned int *len)
+{
+	if (!strcmp("Courier", name)) {
+		*len = sizeof fz_font_NimbusMono_Regular;
+		return (unsigned char*) fz_font_NimbusMono_Regular;
+	}
+	if (!strcmp("Courier-Bold", name)) {
+		*len = sizeof fz_font_NimbusMono_Bold;
+		return (unsigned char*) fz_font_NimbusMono_Bold;
+	}
+	if (!strcmp("Courier-Oblique", name)) {
+		*len = sizeof fz_font_NimbusMono_Oblique;
+		return (unsigned char*) fz_font_NimbusMono_Oblique;
+	}
+	if (!strcmp("Courier-BoldOblique", name)) {
+		*len = sizeof fz_font_NimbusMono_BoldOblique;
+		return (unsigned char*) fz_font_NimbusMono_BoldOblique;
+	}
+	if (!strcmp("Helvetica", name)) {
+		*len = sizeof fz_font_NimbusSanL_Reg;
+		return (unsigned char*) fz_font_NimbusSanL_Reg;
+	}
+	if (!strcmp("Helvetica-Bold", name)) {
+		*len = sizeof fz_font_NimbusSanL_Bol;
+		return (unsigned char*) fz_font_NimbusSanL_Bol;
+	}
+	if (!strcmp("Helvetica-Oblique", name)) {
+		*len = sizeof fz_font_NimbusSanL_RegIta;
+		return (unsigned char*) fz_font_NimbusSanL_RegIta;
+	}
+	if (!strcmp("Helvetica-BoldOblique", name)) {
+		*len = sizeof fz_font_NimbusSanL_BolIta;
+		return (unsigned char*) fz_font_NimbusSanL_BolIta;
+	}
+	if (!strcmp("Times-Roman", name)) {
+		*len = sizeof fz_font_NimbusRomNo9L_Reg;
+		return (unsigned char*) fz_font_NimbusRomNo9L_Reg;
+	}
+	if (!strcmp("Times-Bold", name)) {
+		*len = sizeof fz_font_NimbusRomNo9L_Med;
+		return (unsigned char*) fz_font_NimbusRomNo9L_Med;
+	}
+	if (!strcmp("Times-Italic", name)) {
+		*len = sizeof fz_font_NimbusRomNo9L_RegIta;
+		return (unsigned char*) fz_font_NimbusRomNo9L_RegIta;
+	}
+	if (!strcmp("Times-BoldItalic", name)) {
+		*len = sizeof fz_font_NimbusRomNo9L_MedIta;
+		return (unsigned char*) fz_font_NimbusRomNo9L_MedIta;
+	}
+	if (!strcmp("Symbol", name)) {
+		*len = sizeof fz_font_StandardSymL;
+		return (unsigned char*) fz_font_StandardSymL;
+	}
+	if (!strcmp("ZapfDingbats", name)) {
+		*len = sizeof fz_font_Dingbats;
+		return (unsigned char*) fz_font_Dingbats;
+	}
+	*len = 0;
+	return NULL;
+}
+
+unsigned char *
+fz_lookup_cjk_font(fz_context *ctx, int registry, int serif, int wmode, unsigned int *len, int *index)
+{
+#ifndef TOFU_CJK
+#ifndef TOFU_CJK_EXT
+	if (index) *index = wmode;
+	*len = sizeof fz_font_DroidSansFallbackFull;
+	return (unsigned char*) fz_font_DroidSansFallbackFull;
+#else
+	if (index) *index = wmode;
+	*len = sizeof fz_font_DroidSansFallback;
+	return (unsigned char*) fz_font_DroidSansFallback;
+#endif
+#else
+	*len = 0;
+	return NULL;
+#endif
+}
+
+#define Noto(SANS) \
+		*len = sizeof fz_font_Noto ## SANS ## _Regular; \
+		return (unsigned char*) fz_font_Noto ## SANS ## _Regular; \
+		break
+
+#define Noto2(SANS,SERIF) \
+		if (serif) { \
+			*len = sizeof fz_font_Noto ## SERIF ## _Regular; \
+			return (unsigned char*) fz_font_Noto ## SERIF ## _Regular; \
+		} else { \
+			*len = sizeof fz_font_Noto ## SANS ## _Regular; \
+			return (unsigned char*) fz_font_Noto ## SANS ## _Regular; \
+		} \
+		break
+
+#define Noto3(SANS,SERIF,UNUSED) \
+	Noto2(SANS,SERIF)
+
+unsigned char *
+fz_lookup_noto_font(fz_context *ctx, int script, int serif, unsigned int *len)
+{
+	/* Unused Noto fonts: NastaliqUrdu, SansSyriacEstrangela */
+
+	switch (script)
+	{
+	default:
+	case UCDN_SCRIPT_COMMON:
+	case UCDN_SCRIPT_INHERITED:
+	case UCDN_SCRIPT_UNKNOWN:
+		break;
+
+	case UCDN_SCRIPT_HANGUL:
+		return fz_lookup_cjk_font(ctx, FZ_ADOBE_KOREA_1, serif, 0, len, NULL);
+	case UCDN_SCRIPT_HIRAGANA:
+	case UCDN_SCRIPT_KATAKANA:
+		return fz_lookup_cjk_font(ctx, FZ_ADOBE_JAPAN_1, serif, 0, len, NULL);
+	case UCDN_SCRIPT_BOPOMOFO:
+		return fz_lookup_cjk_font(ctx, FZ_ADOBE_GB_1, serif, 0, len, NULL);
+	case UCDN_SCRIPT_HAN:
+		return fz_lookup_cjk_font(ctx, FZ_ADOBE_GB_1, serif, 0, len, NULL);
+
+#ifndef TOFU
+
+#ifndef TOFU_HISTORIC
+	case UCDN_SCRIPT_IMPERIAL_ARAMAIC: Noto(SansImperialAramaic);
+	case UCDN_SCRIPT_AVESTAN: Noto(SansAvestan);
+	case UCDN_SCRIPT_CARIAN: Noto(SansCarian);
+	case UCDN_SCRIPT_CYPRIOT: Noto(SansCypriot);
+	case UCDN_SCRIPT_EGYPTIAN_HIEROGLYPHS: Noto(SansEgyptianHieroglyphs);
+	case UCDN_SCRIPT_GLAGOLITIC: Noto(SansGlagolitic);
+	case UCDN_SCRIPT_GOTHIC: Noto(SansGothic);
+	case UCDN_SCRIPT_OLD_ITALIC: Noto(SansOldItalic);
+	case UCDN_SCRIPT_KHAROSHTHI: Noto(SansKharoshthi);
+	case UCDN_SCRIPT_KAITHI: Noto(SansKaithi);
+	case UCDN_SCRIPT_LINEAR_B: Noto(SansLinearB);
+	case UCDN_SCRIPT_LYCIAN: Noto(SansLycian);
+	case UCDN_SCRIPT_LYDIAN: Noto(SansLydian);
+	case UCDN_SCRIPT_OGHAM: Noto(SansOgham);
+	case UCDN_SCRIPT_OLD_TURKIC: Noto(SansOldTurkic);
+	case UCDN_SCRIPT_PHAGS_PA: Noto(SansPhagsPa);
+	case UCDN_SCRIPT_INSCRIPTIONAL_PAHLAVI: Noto(SansInscriptionalPahlavi);
+	case UCDN_SCRIPT_INSCRIPTIONAL_PARTHIAN: Noto(SansInscriptionalParthian);
+	case UCDN_SCRIPT_RUNIC: Noto(SansRunic);
+	case UCDN_SCRIPT_OLD_SOUTH_ARABIAN: Noto(SansOldSouthArabian);
+	case UCDN_SCRIPT_UGARITIC: Noto(SansUgaritic);
+	case UCDN_SCRIPT_OLD_PERSIAN: Noto(SansOldPersian);
+	case UCDN_SCRIPT_CUNEIFORM: Noto(SansCuneiform);
+	case UCDN_SCRIPT_COPTIC: Noto(SansCoptic);
+#endif
+
+	case UCDN_SCRIPT_LATIN: Noto2(Sans, Serif);
+	case UCDN_SCRIPT_GREEK: Noto2(Sans, Serif);
+	case UCDN_SCRIPT_CYRILLIC: Noto2(Sans, Serif);
+	case UCDN_SCRIPT_ARMENIAN: Noto2(SansArmenian, SerifArmenian);
+	case UCDN_SCRIPT_HEBREW: Noto(SansHebrew);
+	case UCDN_SCRIPT_ARABIC: Noto3(KufiArabic, NaskhArabic, NastaliqUrdu);
+	case UCDN_SCRIPT_SYRIAC: Noto3(SansSyriacEastern, SansSyriacWestern, SansSyriacEstrangela);
+	case UCDN_SCRIPT_THAANA: Noto(SansThaana);
+	case UCDN_SCRIPT_DEVANAGARI: Noto(SansDevanagari);
+	case UCDN_SCRIPT_BENGALI: Noto2(SansBengali, SerifBengali);
+	case UCDN_SCRIPT_GURMUKHI: Noto(SansGurmukhi);
+	case UCDN_SCRIPT_GUJARATI: Noto2(SansGujarati, SerifGujarati);
+	case UCDN_SCRIPT_ORIYA: Noto(SansOriya);
+	case UCDN_SCRIPT_TAMIL: Noto2(SansTamil, SerifTamil);
+	case UCDN_SCRIPT_TELUGU: Noto2(SansTelugu, SerifTelugu);
+	case UCDN_SCRIPT_KANNADA: Noto2(SansKannada, SerifKannada);
+	case UCDN_SCRIPT_MALAYALAM: Noto2(SansMalayalam, SerifMalayalam);
+	case UCDN_SCRIPT_SINHALA: Noto(SansSinhala);
+	case UCDN_SCRIPT_THAI: Noto2(SansThai, SerifThai);
+	case UCDN_SCRIPT_LAO: Noto2(SansLao, SerifLao);
+	case UCDN_SCRIPT_TIBETAN: Noto(SansTibetan);
+	case UCDN_SCRIPT_MYANMAR: Noto(SansMyanmar);
+	case UCDN_SCRIPT_GEORGIAN: Noto2(SansGeorgian, SerifGeorgian);
+	case UCDN_SCRIPT_ETHIOPIC: Noto(SansEthiopic);
+	case UCDN_SCRIPT_CHEROKEE: Noto(SansCherokee);
+	case UCDN_SCRIPT_CANADIAN_ABORIGINAL: Noto(SansCanadianAboriginal);
+	case UCDN_SCRIPT_KHMER: Noto2(SansKhmer, SerifKhmer);
+	case UCDN_SCRIPT_MONGOLIAN: Noto(SansMongolian);
+	case UCDN_SCRIPT_YI: Noto(SansYi);
+	case UCDN_SCRIPT_DESERET: Noto(SansDeseret);
+	case UCDN_SCRIPT_TAGALOG: Noto(SansTagalog);
+	case UCDN_SCRIPT_HANUNOO: Noto(SansHanunoo);
+	case UCDN_SCRIPT_BUHID: Noto(SansBuhid);
+	case UCDN_SCRIPT_TAGBANWA: Noto(SansTagbanwa);
+	case UCDN_SCRIPT_LIMBU: Noto(SansLimbu);
+	case UCDN_SCRIPT_TAI_LE: Noto(SansTaiLe);
+	case UCDN_SCRIPT_SHAVIAN: Noto(SansShavian);
+	case UCDN_SCRIPT_OSMANYA: Noto(SansOsmanya);
+	case UCDN_SCRIPT_BUGINESE: Noto(SansBuginese);
+	case UCDN_SCRIPT_NEW_TAI_LUE: Noto(SansNewTaiLue);
+	case UCDN_SCRIPT_TIFINAGH: Noto(SansTifinagh);
+	case UCDN_SCRIPT_SYLOTI_NAGRI: Noto(SansSylotiNagri);
+	case UCDN_SCRIPT_BALINESE: Noto(SansBalinese);
+	case UCDN_SCRIPT_PHOENICIAN: Noto(SansPhoenician);
+	case UCDN_SCRIPT_NKO: Noto(SansNKo);
+	case UCDN_SCRIPT_SUNDANESE: Noto(SansSundanese);
+	case UCDN_SCRIPT_LEPCHA: Noto(SansLepcha);
+	case UCDN_SCRIPT_OL_CHIKI: Noto(SansOlChiki);
+	case UCDN_SCRIPT_VAI: Noto(SansVai);
+	case UCDN_SCRIPT_SAURASHTRA: Noto(SansSaurashtra);
+	case UCDN_SCRIPT_KAYAH_LI: Noto(SansKayahLi);
+	case UCDN_SCRIPT_REJANG: Noto(SansRejang);
+	case UCDN_SCRIPT_CHAM: Noto(SansCham);
+	case UCDN_SCRIPT_TAI_THAM: Noto(SansTaiTham);
+	case UCDN_SCRIPT_TAI_VIET: Noto(SansTaiViet);
+	case UCDN_SCRIPT_SAMARITAN: Noto(SansSamaritan);
+	case UCDN_SCRIPT_LISU: Noto(SansLisu);
+	case UCDN_SCRIPT_BAMUM: Noto(SansBamum);
+	case UCDN_SCRIPT_JAVANESE: Noto(SansJavanese);
+	case UCDN_SCRIPT_MEETEI_MAYEK: Noto(SansMeeteiMayek);
+	case UCDN_SCRIPT_BATAK: Noto(SansBatak);
+	case UCDN_SCRIPT_BRAHMI: Noto(SansBrahmi);
+	case UCDN_SCRIPT_MANDAIC: Noto(SansMandaic);
+
+	/* No fonts available for these scripts: */
+#ifndef TOFU_HISTORIC
+	case UCDN_SCRIPT_AHOM: break;
+	case UCDN_SCRIPT_BASSA_VAH: break;
+	case UCDN_SCRIPT_ELBASAN: break;
+	case UCDN_SCRIPT_GRANTHA: break;
+	case UCDN_SCRIPT_HATRAN: break;
+	case UCDN_SCRIPT_ANATOLIAN_HIEROGLYPHS: break;
+	case UCDN_SCRIPT_OLD_HUNGARIAN: break;
+	case UCDN_SCRIPT_KHOJKI: break;
+	case UCDN_SCRIPT_LINEAR_A: break;
+	case UCDN_SCRIPT_MAHAJANI: break;
+	case UCDN_SCRIPT_MANICHAEAN: break;
+	case UCDN_SCRIPT_MEROITIC_CURSIVE: break;
+	case UCDN_SCRIPT_MEROITIC_HIEROGLYPHS: break;
+	case UCDN_SCRIPT_MODI: break;
+	case UCDN_SCRIPT_MULTANI: break;
+	case UCDN_SCRIPT_OLD_NORTH_ARABIAN: break;
+	case UCDN_SCRIPT_NABATAEAN: break;
+	case UCDN_SCRIPT_PALMYRENE: break;
+	case UCDN_SCRIPT_OLD_PERMIC: break;
+	case UCDN_SCRIPT_PSALTER_PAHLAVI: break;
+	case UCDN_SCRIPT_SIDDHAM: break;
+#endif
+	case UCDN_SCRIPT_BRAILLE: break; /* no dedicated font */
+	case UCDN_SCRIPT_CHAKMA: break;
+	case UCDN_SCRIPT_MIAO: break;
+	case UCDN_SCRIPT_SHARADA: break;
+	case UCDN_SCRIPT_SORA_SOMPENG: break;
+	case UCDN_SCRIPT_TAKRI: break;
+	case UCDN_SCRIPT_CAUCASIAN_ALBANIAN: break;
+	case UCDN_SCRIPT_DUPLOYAN: break;
+	case UCDN_SCRIPT_KHUDAWADI: break;
+	case UCDN_SCRIPT_MENDE_KIKAKUI: break;
+	case UCDN_SCRIPT_MRO: break;
+	case UCDN_SCRIPT_PAHAWH_HMONG: break;
+	case UCDN_SCRIPT_PAU_CIN_HAU: break;
+	case UCDN_SCRIPT_TIRHUTA: break;
+	case UCDN_SCRIPT_WARANG_CITI: break;
+	case UCDN_SCRIPT_SIGNWRITING: break;
+
+#endif
+	}
+
+	*len = 0;
+	return NULL;
+}
+
+unsigned char *
+fz_lookup_noto_symbol_font(fz_context *ctx, unsigned int *len)
+{
+#ifndef TOFU_SYMBOL
+	*len = sizeof fz_font_NotoSansSymbols_Regular;
+	return (unsigned char*) fz_font_NotoSansSymbols_Regular;
+#else
+	*len = 0;
+	return NULL;
+#endif
+}
+
+unsigned char *
+fz_lookup_noto_emoji_font(fz_context *ctx, unsigned int *len)
+{
+#ifndef TOFU_EMOJI
+	*len = sizeof fz_font_NotoEmoji_Regular;
+	return (unsigned char*) fz_font_NotoEmoji_Regular;
+#else
+	*len = 0;
+	return NULL;
+#endif
+}