[MATH] Move API from hb-ot-layout.h to hb-ot-math.h
diff --git a/src/hb-ot-math.h b/src/hb-ot-math.h
index bf37975..5ff19fd 100644
--- a/src/hb-ot-math.h
+++ b/src/hb-ot-math.h
@@ -36,6 +36,14 @@
HB_BEGIN_DECLS
+/*
+ * MATH
+ */
+
+#define HB_OT_TAG_MATH HB_TAG('M','A','T','H')
+
+/* Types */
+
typedef enum {
HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN = 0,
HB_OT_MATH_CONSTANT_SCRIPT_SCRIPT_PERCENT_SCALE_DOWN = 1,
@@ -119,6 +127,54 @@
hb_math_glyph_part_flags_t flags;
} hb_math_glyph_part_t;
+/* Methods */
+
+HB_EXTERN hb_bool_t
+hb_ot_layout_has_math_data (hb_face_t *face);
+
+HB_EXTERN hb_position_t
+hb_ot_layout_get_math_constant (hb_font_t *font,
+ hb_ot_math_constant_t constant);
+
+HB_EXTERN hb_position_t
+hb_ot_layout_get_math_italics_correction (hb_font_t *font,
+ hb_codepoint_t glyph);
+
+HB_EXTERN hb_position_t
+hb_ot_layout_get_math_top_accent_attachment (hb_font_t *font,
+ hb_codepoint_t glyph);
+
+HB_EXTERN hb_bool_t
+hb_ot_layout_is_math_extended_shape (hb_face_t *face,
+ hb_codepoint_t glyph);
+
+HB_EXTERN hb_position_t
+hb_ot_layout_get_math_kerning (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_ot_math_kern_t kern,
+ hb_position_t correction_height);
+
+HB_EXTERN unsigned int
+hb_ot_layout_get_math_glyph_variants (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ unsigned int start_offset,
+ unsigned int *variants_count, /* IN/OUT */
+ hb_math_glyph_variant_t *variants /* OUT */);
+
+HB_EXTERN hb_position_t
+hb_ot_layout_get_math_min_connector_overlap (hb_font_t *font,
+ hb_direction_t direction);
+
+HB_EXTERN unsigned int
+hb_ot_layout_get_math_glyph_assembly (hb_font_t *font,
+ hb_codepoint_t glyph,
+ hb_direction_t direction,
+ unsigned int start_offset,
+ unsigned int *parts_count, /* IN/OUT */
+ hb_math_glyph_part_t *parts, /* OUT */
+ hb_position_t *italics_correction /* OUT */);
+
HB_END_DECLS
