Imported Upstream version 0.9.12

[platform/upstream/harfbuzz.git] / src / hb-ot-layout.h

diff --git a/src/hb-ot-layout.h b/src/hb-ot-layout.h
index 2ad4ff4..134f1a6 100644 (file)
--- a/src/hb-ot-layout.h
+++ b/src/hb-ot-layout.h
@@ -50,6 +50,24 @@ HB_BEGIN_DECLS
 hb_bool_t
 hb_ot_layout_has_glyph_classes (hb_face_t *face);
 
+typedef enum {
+  HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED        = 0,
+  HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH  = 1,
+  HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE    = 2,
+  HB_OT_LAYOUT_GLYPH_CLASS_MARK                = 3,
+  HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT   = 4
+} hb_ot_layout_glyph_class_t;
+
+hb_ot_layout_glyph_class_t
+hb_ot_layout_get_glyph_class (hb_face_t      *face,
+                             hb_codepoint_t  glyph);
+
+void
+hb_ot_layout_get_glyphs_in_class (hb_face_t                  *face,
+                                 hb_ot_layout_glyph_class_t  klass,
+                                 hb_set_t                   *glyphs /* OUT */);
+
+
 /* Not that useful.  Provides list of attach points for a glyph that a
  * client may want to cache */
 unsigned int
@@ -154,12 +172,60 @@ hb_ot_layout_language_find_feature (hb_face_t    *face,
                                    unsigned int *feature_index);
 
 unsigned int
-hb_ot_layout_feature_get_lookup_indexes (hb_face_t    *face,
+hb_ot_layout_feature_get_lookups (hb_face_t    *face,
+                                 hb_tag_t      table_tag,
+                                 unsigned int  feature_index,
+                                 unsigned int  start_offset,
+                                 unsigned int *lookup_count /* IN/OUT */,
+                                 unsigned int *lookup_indexes /* OUT */);
+
+void
+hb_ot_layout_collect_lookups (hb_face_t      *face,
+                             hb_tag_t        table_tag,
+                             const hb_tag_t *scripts,
+                             const hb_tag_t *languages,
+                             const hb_tag_t *features,
+                             hb_set_t       *lookup_indexes /* OUT */);
+
+void
+hb_ot_shape_plan_collect_lookups (hb_shape_plan_t *shape_plan,
+                                 hb_tag_t         table_tag,
+                                 hb_set_t        *lookup_indexes /* OUT */);
+
+void
+hb_ot_layout_lookup_collect_glyphs (hb_face_t    *face,
+                                   hb_tag_t      table_tag,
+                                   unsigned int  lookup_index,
+                                   hb_set_t     *glyphs_before, /* OUT. May be NULL */
+                                   hb_set_t     *glyphs_input,  /* OUT. May be NULL */
+                                   hb_set_t     *glyphs_after,  /* OUT. May be NULL */
+                                   hb_set_t     *glyphs_output  /* OUT. May be NULL */);
+
+#ifdef HB_NOT_IMPLEMENTED
+typedef struct
+{
+  const hb_codepoint_t *before,
+  unsigned int          before_length,
+  const hb_codepoint_t *input,
+  unsigned int          input_length,
+  const hb_codepoint_t *after,
+  unsigned int          after_length,
+} hb_ot_layout_glyph_sequence_t;
+
+typedef hb_bool_t
+(*hb_ot_layout_glyph_sequence_func_t) (hb_font_t    *font,
+                                      hb_tag_t      table_tag,
+                                      unsigned int  lookup_index,
+                                      const hb_ot_layout_glyph_sequence_t *sequence,
+                                      void         *user_data);
+
+void
+Xhb_ot_layout_lookup_enumerate_sequences (hb_face_t    *face,
                                         hb_tag_t      table_tag,
-                                        unsigned int  feature_index,
-                                        unsigned int  start_offset,
-                                        unsigned int *lookup_count /* IN/OUT */,
-                                        unsigned int *lookup_indexes /* OUT */);
+                                        unsigned int  lookup_index,
+                                        hb_ot_layout_glyph_sequence_func_t callback,
+                                        void         *user_data);
+#endif
 
 
 /*
@@ -170,15 +236,30 @@ hb_bool_t
 hb_ot_layout_has_substitution (hb_face_t *face);
 
 hb_bool_t
-hb_ot_layout_would_substitute_lookup (hb_face_t            *face,
+hb_ot_layout_lookup_would_substitute (hb_face_t            *face,
+                                     unsigned int          lookup_index,
                                      const hb_codepoint_t *glyphs,
                                      unsigned int          glyphs_length,
-                                     unsigned int          lookup_index);
+                                     hb_bool_t             zero_context);
 
 void
-hb_ot_layout_substitute_closure_lookup (hb_face_t    *face,
-                                       hb_set_t     *glyphs,
-                                       unsigned int  lookup_index);
+hb_ot_layout_lookup_substitute_closure (hb_face_t    *face,
+                                       unsigned int  lookup_index,
+                                       hb_set_t     *glyphs
+                                       /*TODO , hb_bool_t  inclusive */);
+
+#ifdef HB_NOT_IMPLEMENTED
+/* Note: You better have GDEF when using this API, or marks won't do much. */
+hb_bool_t
+Xhb_ot_layout_lookup_substitute (hb_font_t            *font,
+                               unsigned int          lookup_index,
+                               const hb_ot_layout_glyph_sequence_t *sequence,
+                               unsigned int          out_size,
+                               hb_codepoint_t       *glyphs_out,   /* OUT */
+                               unsigned int         *clusters_out, /* OUT */
+                               unsigned int         *out_length    /* OUT */);
+#endif
+
 
 /*
  * GPOS
@@ -187,6 +268,25 @@ hb_ot_layout_substitute_closure_lookup (hb_face_t    *face,
 hb_bool_t
 hb_ot_layout_has_positioning (hb_face_t *face);
 
+#ifdef HB_NOT_IMPLEMENTED
+/* Note: You better have GDEF when using this API, or marks won't do much. */
+hb_bool_t
+Xhb_ot_layout_lookup_position (hb_font_t            *font,
+                             unsigned int          lookup_index,
+                             const hb_ot_layout_glyph_sequence_t *sequence,
+                             hb_glyph_position_t  *positions /* IN / OUT */);
+#endif
+
+/* Optical 'size' feature info.  Returns true if found.
+ * http://www.microsoft.com/typography/otspec/features_pt.htm#size */
+hb_bool_t
+hb_ot_layout_get_size_params (hb_face_t    *face,
+                             unsigned int *design_size,       /* OUT.  May be NULL */
+                             unsigned int *subfamily_id,      /* OUT.  May be NULL */
+                             unsigned int *subfamily_name_id, /* OUT.  May be NULL */
+                             unsigned int *range_start,       /* OUT.  May be NULL */
+                             unsigned int *range_end          /* OUT.  May be NULL */);
+
 
 HB_END_DECLS