/*
- * Copyright (C) 2007,2008,2009 Red Hat, Inc.
+ * Copyright © 2007,2008,2009 Red Hat, Inc.
*
- * This is part of HarfBuzz, an OpenType Layout engine library.
+ * This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* Red Hat Author(s): Behdad Esfahbod
*/
+#ifndef HB_OT_H_IN
+#error "Include <hb-ot.h> instead."
+#endif
+
#ifndef HB_OT_LAYOUT_H
#define HB_OT_LAYOUT_H
-#include "hb-common.h"
-#include "hb-buffer.h"
-#include "hb-font.h"
+#include "hb.h"
+
+#include "hb-ot-tag.h"
HB_BEGIN_DECLS
+
#define HB_OT_TAG_GDEF HB_TAG('G','D','E','F')
#define HB_OT_TAG_GSUB HB_TAG('G','S','U','B')
#define HB_OT_TAG_GPOS HB_TAG('G','P','O','S')
* GDEF
*/
-typedef enum {
- HB_OT_LAYOUT_GLYPH_CLASS_UNCLASSIFIED = 0x0000,
- HB_OT_LAYOUT_GLYPH_CLASS_BASE_GLYPH = 0x0002,
- HB_OT_LAYOUT_GLYPH_CLASS_LIGATURE = 0x0004,
- HB_OT_LAYOUT_GLYPH_CLASS_MARK = 0x0008,
- HB_OT_LAYOUT_GLYPH_CLASS_COMPONENT = 0x0010
-} hb_ot_layout_glyph_class_t;
-
-/* XXX These should eventually be removed as we move synthesized glyph
- * classes in harfbuzz. */
-
hb_bool_t
-hb_ot_layout_has_font_glyph_classes (hb_face_t *face);
-
-hb_ot_layout_glyph_class_t
-hb_ot_layout_get_glyph_class (hb_face_t *face,
- hb_codepoint_t glyph);
-
-void
-hb_ot_layout_set_glyph_class (hb_face_t *face,
- hb_codepoint_t glyph,
- hb_ot_layout_glyph_class_t klass);
-
-void
-hb_ot_layout_build_glyph_classes (hb_face_t *face,
- uint16_t num_total_glyphs,
- hb_codepoint_t *glyphs,
- unsigned char *klasses,
- uint16_t count);
+hb_ot_layout_has_glyph_classes (hb_face_t *face);
/* Not that useful. Provides list of attach points for a glyph that a
* client may want to cache */
-hb_bool_t
+unsigned int
hb_ot_layout_get_attach_points (hb_face_t *face,
hb_codepoint_t glyph,
+ unsigned int start_offset,
unsigned int *point_count /* IN/OUT */,
unsigned int *point_array /* OUT */);
/* Ligature caret positions */
-hb_bool_t
-hb_ot_layout_get_lig_carets (hb_face_t *face,
- hb_font_t *font,
- hb_codepoint_t glyph,
- unsigned int *caret_count /* IN/OUT */,
- int *caret_array /* OUT */);
+unsigned int
+hb_ot_layout_get_ligature_carets (hb_font_t *font,
+ hb_direction_t direction,
+ hb_codepoint_t glyph,
+ unsigned int start_offset,
+ unsigned int *caret_count /* IN/OUT */,
+ hb_position_t *caret_array /* OUT */);
/*
#define HB_OT_LAYOUT_NO_SCRIPT_INDEX ((unsigned int) 0xFFFF)
#define HB_OT_LAYOUT_NO_FEATURE_INDEX ((unsigned int) 0xFFFF)
#define HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX ((unsigned int) 0xFFFF)
-#define HB_OT_LAYOUT_TAG_DEFAULT_SCRIPT HB_TAG ('D', 'F', 'L', 'T')
-#define HB_OT_LAYOUT_TAG_DEFAULT_LANGUAGE HB_TAG ('d', 'f', 'l', 't')
-hb_bool_t
+unsigned int
hb_ot_layout_table_get_script_tags (hb_face_t *face,
hb_tag_t table_tag,
+ unsigned int start_offset,
unsigned int *script_count /* IN/OUT */,
hb_tag_t *script_tags /* OUT */);
hb_tag_t script_tag,
unsigned int *script_index);
+/* Like find_script, but takes zero-terminated array of scripts to test */
hb_bool_t
+hb_ot_layout_table_choose_script (hb_face_t *face,
+ hb_tag_t table_tag,
+ const hb_tag_t *script_tags,
+ unsigned int *script_index,
+ hb_tag_t *chosen_script);
+
+unsigned int
hb_ot_layout_table_get_feature_tags (hb_face_t *face,
hb_tag_t table_tag,
+ unsigned int start_offset,
unsigned int *feature_count /* IN/OUT */,
hb_tag_t *feature_tags /* OUT */);
-hb_bool_t
-hb_ot_layout_table_find_feature (hb_face_t *face,
- hb_tag_t table_tag,
- hb_tag_t feature_tag,
- unsigned int *feature_index);
-
-hb_bool_t
+unsigned int
hb_ot_layout_script_get_language_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
+ unsigned int start_offset,
unsigned int *language_count /* IN/OUT */,
hb_tag_t *language_tags /* OUT */);
unsigned int language_index,
unsigned int *feature_index);
-hb_bool_t
+unsigned int
hb_ot_layout_language_get_feature_indexes (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
+ unsigned int start_offset,
unsigned int *feature_count /* IN/OUT */,
unsigned int *feature_indexes /* OUT */);
-hb_bool_t
+unsigned int
hb_ot_layout_language_get_feature_tags (hb_face_t *face,
hb_tag_t table_tag,
unsigned int script_index,
unsigned int language_index,
+ unsigned int start_offset,
unsigned int *feature_count /* IN/OUT */,
hb_tag_t *feature_tags /* OUT */);
hb_tag_t feature_tag,
unsigned int *feature_index);
-hb_bool_t
+unsigned int
hb_ot_layout_feature_get_lookup_indexes (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 */);
hb_bool_t
hb_ot_layout_has_substitution (hb_face_t *face);
+/* Should be called before all the substitute_lookup's are done. */
+void
+hb_ot_layout_substitute_start (hb_buffer_t *buffer);
+
hb_bool_t
hb_ot_layout_substitute_lookup (hb_face_t *face,
hb_buffer_t *buffer,
unsigned int lookup_index,
hb_mask_t mask);
+/* Should be called after all the substitute_lookup's are done */
+void
+hb_ot_layout_substitute_finish (hb_buffer_t *buffer);
+
+
+void
+hb_ot_layout_substitute_closure_lookup (hb_face_t *face,
+ hb_set_t *glyphs,
+ unsigned int lookup_index);
+
/*
* GPOS
*/
hb_bool_t
hb_ot_layout_has_positioning (hb_face_t *face);
+/* Should be called before all the position_lookup's are done. Resets positions to zero. */
+void
+hb_ot_layout_position_start (hb_buffer_t *buffer);
+
hb_bool_t
-hb_ot_layout_position_lookup (hb_face_t *face,
- hb_font_t *font,
- hb_buffer_t *buffer,
- unsigned int lookup_index,
- hb_mask_t mask);
+hb_ot_layout_position_lookup (hb_font_t *font,
+ hb_buffer_t *buffer,
+ unsigned int lookup_index,
+ hb_mask_t mask);
+
+/* Should be called after all the position_lookup's are done */
+void
+hb_ot_layout_position_finish (hb_buffer_t *buffer);
HB_END_DECLS
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