Added Noto Sans Arabic

Added a font for Arabic, making the glyphs available for rendering.

Of course, this doesn't solve Arabic text rendering yet. There is still the RTL direction to work out and possibly some missing glyph combining rules.

IssueID #195

2 files changed, 10 insertions, 1 deletions

diff --git a/src/ui/text.c b/src/ui/text.c
index 6aaf40f5..b4401abb 100644
--- a/src/ui/text.c
+++ b/src/ui/text.c
@@ -331,6 +331,7 @@ static void initFonts_Text_(iText *d) {
         DEFINE_FONT_SET(fontNotoSansJPRegular_Embedded),
         DEFINE_FONT_SET(fontNotoSansSCRegular_Embedded),
         DEFINE_FONT_SET(fontNanumGothicRegular_Embedded), /* TODO: should use Noto Sans here, too */
+        DEFINE_FONT_SET(fontNotoSansArabicUIRegular_Embedded),
     };
     iForIndices(i, fontData) {
         iFont *font = &d->fonts[i];
@@ -584,6 +585,13 @@ iLocalDef iFont *characterFont_Font_(iFont *d, iChar ch, uint32_t *glyphIndex) {
             return japanese;
         }
     }
+    /* Maybe Arabic. */
+    if (ch >= 0x600) {
+        iFont *arabic = font_Text_(arabic_FontId + d->sizeId);
+        if (arabic != d && (*glyphIndex = glyphIndex_Font_(arabic, ch)) != 0) {
+            return arabic;
+        }
+    }
 #if defined (iPlatformApple)
     /* White up arrow is used for the Shift key on macOS. Symbola's glyph is not a great
        match to the other text, so use the UI font instead. */
diff --git a/src/ui/text.h b/src/ui/text.h
index d86754cc..58941974 100644
--- a/src/ui/text.h
+++ b/src/ui/text.h
@@ -75,7 +75,8 @@ enum iFontId {
     japanese_FontId          = emoji_FontId + max_FontSize,
     chineseSimplified_FontId = japanese_FontId + max_FontSize,
     korean_FontId            = chineseSimplified_FontId + max_FontSize,
-    max_FontId               = korean_FontId + max_FontSize,
+    arabic_FontId            = korean_FontId + max_FontSize,
+    max_FontId               = arabic_FontId + max_FontSize,
 
     /* Meta: */
     mask_FontId               = 0xffff,