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262 lines
6.9 KiB
262 lines
6.9 KiB
Overview of changes leading to 0.6.0 |
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Friday, May 27, 2011 |
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==================================== |
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- Vertical text support in GPOS |
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- Almost all API entries have unit tests now, under test/ |
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- All thread-safety issues are fixed |
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Summary of API changes follows. |
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* Simple Types API: |
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o New API: |
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HB_LANGUAGE_INVALID |
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hb_language_get_default() |
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hb_direction_to_string() |
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hb_direction_from_string() |
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hb_script_get_horizontal_direction() |
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HB_UNTAG() |
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o Renamed API: |
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hb_category_t renamed to hb_unicode_general_category_t |
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o Changed API: |
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hb_language_t is a typed pointers now |
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o Removed API: |
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HB_TAG_STR() |
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* Use ISO 15924 tags for hb_script_t: |
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o New API: |
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hb_script_from_iso15924_tag() |
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hb_script_to_iso15924_tag() |
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hb_script_from_string() |
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o Changed API: |
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HB_SCRIPT_* enum members changed value. |
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* Buffer API streamlined: |
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o New API: |
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hb_buffer_reset() |
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hb_buffer_set_length() |
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hb_buffer_allocation_successful() |
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o Renamed API: |
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hb_buffer_ensure() renamed to hb_buffer_pre_allocate() |
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hb_buffer_add_glyph() renamed to hb_buffer_add() |
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o Removed API: |
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hb_buffer_clear() |
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hb_buffer_clear_positions() |
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o Changed API: |
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hb_buffer_get_glyph_infos() takes an out length parameter now |
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hb_buffer_get_glyph_positions() takes an out length parameter now |
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* Blob API streamlined: |
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o New API: |
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hb_blob_get_data() |
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hb_blob_get_data_writable() |
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o Renamed API: |
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hb_blob_create_empty() renamed to hb_blob_get_empty() |
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o Removed API: |
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hb_blob_lock() |
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hb_blob_unlock() |
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hb_blob_is_writable() |
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hb_blob_try_writable() |
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o Changed API: |
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hb_blob_create() takes user_data before destroy now |
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* Unicode functions API: |
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o Unicode function vectors can subclass other unicode function vectors now. |
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Unimplemented callbacks in the subclass automatically chainup to the parent. |
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o All hb_unicode_funcs_t callbacks take a user_data now. Their setters |
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take a user_data and its respective destroy callback. |
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o New API: |
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hb_unicode_funcs_get_empty() |
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hb_unicode_funcs_get_default() |
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hb_unicode_funcs_get_parent() |
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o Changed API: |
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hb_unicode_funcs_create() now takes a parent_funcs. |
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o Removed func getter functions: |
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hb_unicode_funcs_get_mirroring_func() |
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hb_unicode_funcs_get_general_category_func() |
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hb_unicode_funcs_get_script_func() |
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hb_unicode_funcs_get_combining_class_func() |
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hb_unicode_funcs_get_eastasian_width_func() |
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* Face API: |
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o Renamed API: |
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hb_face_get_table() renamed to hb_face_reference_table() |
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hb_face_create_for_data() renamed to hb_face_create() |
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o Changed API: |
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hb_face_create_for_tables() takes user_data before destroy now |
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hb_face_reference_table() returns empty blob instead of NULL |
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hb_get_table_func_t accepts the face as first parameter now |
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* Font API: |
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o Fonts can subclass other fonts now. Unimplemented callbacks in the |
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subclass automatically chainup to the parent. When chaining up, |
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scale is adjusted if the parent font has a different scale. |
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o All hb_font_funcs_t callbacks take a user_data now. Their setters |
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take a user_data and its respective destroy callback. |
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o New API: |
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hb_font_get_parent() |
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hb_font_funcs_get_empty() |
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hb_font_create_sub_font() |
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o Removed API: |
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hb_font_funcs_copy() |
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hb_font_unset_funcs() |
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o Removed func getter functions: |
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hb_font_funcs_get_glyph_func() |
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hb_font_funcs_get_glyph_advance_func() |
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hb_font_funcs_get_glyph_extents_func() |
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hb_font_funcs_get_contour_point_func() |
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hb_font_funcs_get_kerning_func() |
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o Changed API: |
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hb_font_create() takes a face and references it now |
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hb_font_set_funcs() takes user_data before destroy now |
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hb_font_set_scale() accepts signed integers now |
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hb_font_get_contour_point_func_t now takes glyph first, then point_index |
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hb_font_get_glyph_func_t returns a success boolean now |
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* Changed object model: |
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o All object types have a _get_empty() now: |
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hb_blob_get_empty() |
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hb_buffer_get_empty() |
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hb_face_get_empty() |
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hb_font_get_empty() |
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hb_font_funcs_get_empty() |
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hb_unicode_funcs_get_empty() |
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o Added _set_user_data() and _get_user_data() for all object types: |
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hb_blob_get_user_data() |
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hb_blob_set_user_data() |
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hb_buffer_get_user_data() |
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hb_buffer_set_user_data() |
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hb_face_get_user_data() |
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hb_face_set_user_data() |
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hb_font_funcs_get_user_data() |
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hb_font_funcs_set_user_data() |
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hb_font_get_user_data() |
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hb_font_set_user_data() |
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hb_unicode_funcs_get_user_data() |
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hb_unicode_funcs_set_user_data() |
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o Removed the _get_reference_count() from all object types: |
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hb_blob_get_reference_count() |
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hb_buffer_get_reference_count() |
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hb_face_get_reference_count() |
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hb_font_funcs_get_reference_count() |
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hb_font_get_reference_count() |
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hb_unicode_funcs_get_reference_count() |
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o Added _make_immutable() and _is_immutable() for all object types except for buffer: |
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hb_blob_make_immutable() |
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hb_blob_is_immutable() |
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hb_face_make_immutable() |
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hb_face_is_immutable() |
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* Changed API for vertical text support |
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o The following callbacks where removed: |
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hb_font_get_glyph_advance_func_t |
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hb_font_get_kerning_func_t |
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o The following new callbacks added instead: |
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hb_font_get_glyph_h_advance_func_t |
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hb_font_get_glyph_v_advance_func_t |
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hb_font_get_glyph_h_origin_func_t |
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hb_font_get_glyph_v_origin_func_t |
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hb_font_get_glyph_h_kerning_func_t |
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hb_font_get_glyph_v_kerning_func_t |
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o The following API removed as such: |
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hb_font_funcs_set_glyph_advance_func() |
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hb_font_funcs_set_kerning_func() |
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hb_font_get_glyph_advance() |
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hb_font_get_kerning() |
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o New API added instead: |
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hb_font_funcs_set_glyph_h_advance_func() |
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hb_font_funcs_set_glyph_v_advance_func() |
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hb_font_funcs_set_glyph_h_origin_func() |
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hb_font_funcs_set_glyph_v_origin_func() |
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hb_font_funcs_set_glyph_h_kerning_func() |
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hb_font_funcs_set_glyph_v_kerning_func() |
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hb_font_get_glyph_h_advance() |
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hb_font_get_glyph_v_advance() |
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hb_font_get_glyph_h_origin() |
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hb_font_get_glyph_v_origin() |
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hb_font_get_glyph_h_kerning() |
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hb_font_get_glyph_v_kerning() |
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o The following higher-leve API added for convenience: |
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hb_font_get_glyph_advance_for_direction() |
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hb_font_get_glyph_origin_for_direction() |
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hb_font_add_glyph_origin_for_direction() |
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hb_font_subtract_glyph_origin_for_direction() |
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hb_font_get_glyph_kerning_for_direction() |
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hb_font_get_glyph_extents_for_origin() |
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hb_font_get_glyph_contour_point_for_origin() |
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* OpenType Layout API: |
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o New API: |
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hb_ot_layout_position_start() |
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hb_ot_layout_substitute_start() |
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hb_ot_layout_substitute_finish() |
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* Glue code: |
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o New API: |
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hb_glib_script_to_script() |
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hb_glib_script_from_script() |
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hb_icu_script_to_script() |
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hb_icu_script_from_script() |
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* Version API added: |
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o New API: |
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HB_VERSION_MAJOR |
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HB_VERSION_MINOR |
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HB_VERSION_MICRO |
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HB_VERSION_STRING |
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HB_VERSION_CHECK() |
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hb_version() |
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hb_version_string() |
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hb_version_check() |
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