Add hb_ot_color_glyph_has_paint

docs/harfbuzz-sections.txt

@@ -544,6 +544,7 @@ hb_ot_color_glyph_reference_png
 hb_ot_color_glyph_reference_svg
 hb_ot_color_has_layers
 hb_ot_color_has_paint
+hb_ot_color_glyph_has_paint
 hb_ot_color_has_palettes
 hb_ot_color_has_png
 hb_ot_color_has_svg

src/hb-ot-color-colr-table.hh

@@ -2011,6 +2011,19 @@ struct COLR
     return true;
   }
 
+  bool
+  has_paint_for_glyph (hb_codepoint_t glyph) const
+  {
+    if (version == 1)
+    {
+      const Paint *paint = get_base_glyph_paint (glyph);
+
+      return paint != nullptr;
+    }
+
+    return false;
+  }
+
   bool
   paint_glyph (hb_font_t *font, hb_codepoint_t glyph, hb_paint_funcs_t *funcs, void *data, unsigned int palette, hb_color_t foreground, bool clip = true) const
   {

src/hb-ot-color.cc

@@ -224,6 +224,25 @@ hb_ot_color_has_paint (hb_face_t *face)
   return face->table.COLR->has_v1_data ();
 }
 
+/**
+ * hb_ot_color_glyph_has_paint:
+ * @face: #hb_face_t to work upon
+ * @glyph: The glyph index to query
+ *
+ * Tests where a face includes COLRv1 paint
+ * data for @glyph.
+ *
+ * Return value: `true` if data found, `false` otherwise
+ *
+ * Since: REPLACEME
+ */
+hb_bool_t
+hb_ot_color_glyph_has_paint (hb_face_t      *face,
+                             hb_codepoint_t  glyph)
+{
+  return face->table.COLR->has_paint_for_glyph (glyph);
+}
+
 /**
  * hb_ot_color_glyph_get_layers:
  * @face: #hb_face_t to work upon

src/hb-ot-color.h

@@ -125,6 +125,10 @@ hb_ot_color_glyph_get_layers (hb_face_t           *face,
 HB_EXTERN hb_bool_t
 hb_ot_color_has_paint (hb_face_t *face);
 
+HB_EXTERN hb_bool_t
+hb_ot_color_glyph_has_paint (hb_face_t      *face,
+                             hb_codepoint_t  glyph);
+
 /*
  * SVG
  */