diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-subset-input.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-subset-input.cc | 130 |
1 files changed, 124 insertions, 6 deletions
diff --git a/thirdparty/harfbuzz/src/hb-subset-input.cc b/thirdparty/harfbuzz/src/hb-subset-input.cc index 4885280996..fd250104bb 100644 --- a/thirdparty/harfbuzz/src/hb-subset-input.cc +++ b/thirdparty/harfbuzz/src/hb-subset-input.cc @@ -32,7 +32,7 @@ * * Creates a new subset input object. * - * Return value: (transfer full): New subset input, or %NULL if failed. Destroy + * Return value: (transfer full): New subset input, or `NULL` if failed. Destroy * with hb_subset_input_destroy(). * * Since: 1.8.0 @@ -48,7 +48,9 @@ hb_subset_input_create_or_fail (void) for (auto& set : input->sets_iter ()) set = hb_set_create (); - if (input->in_error ()) + input->axes_location = hb_hashmap_create<hb_tag_t, float> (); + + if (!input->axes_location || input->in_error ()) { hb_subset_input_destroy (input); return nullptr; @@ -87,7 +89,6 @@ hb_subset_input_create_or_fail (void) hb_tag_t default_no_subset_tables[] = { HB_TAG ('a', 'v', 'a', 'r'), - HB_TAG ('f', 'v', 'a', 'r'), HB_TAG ('g', 'a', 's', 'p'), HB_TAG ('c', 'v', 't', ' '), HB_TAG ('f', 'p', 'g', 'm'), @@ -96,7 +97,6 @@ hb_subset_input_create_or_fail (void) HB_TAG ('D', 'S', 'I', 'G'), HB_TAG ('M', 'V', 'A', 'R'), HB_TAG ('c', 'v', 'a', 'r'), - HB_TAG ('S', 'T', 'A', 'T'), }; input->sets.no_subset_tables->add_array (default_no_subset_tables, ARRAY_LENGTH (default_no_subset_tables)); @@ -140,7 +140,20 @@ hb_subset_input_create_or_fail (void) HB_TAG ('r', 't', 'l', 'a'), HB_TAG ('r', 't', 'l', 'm'), - //Complex shapers + //random + HB_TAG ('r', 'a', 'n', 'd'), + + //justify + HB_TAG ('j', 'a', 'l', 't'), // HarfBuzz doesn't use; others might + + //private + HB_TAG ('H', 'a', 'r', 'f'), + HB_TAG ('H', 'A', 'R', 'F'), + HB_TAG ('B', 'u', 'z', 'z'), + HB_TAG ('B', 'U', 'Z', 'Z'), + + //shapers + //arabic HB_TAG ('i', 'n', 'i', 't'), HB_TAG ('m', 'e', 'd', 'i'), @@ -190,6 +203,8 @@ hb_subset_input_create_or_fail (void) input->sets.layout_features->add_array (default_layout_features, ARRAY_LENGTH (default_layout_features)); + input->sets.layout_scripts->invert (); // Default to all scripts. + if (input->in_error ()) { hb_subset_input_destroy (input); @@ -231,6 +246,8 @@ hb_subset_input_destroy (hb_subset_input_t *input) for (hb_set_t* set : input->sets_iter ()) hb_set_destroy (set); + hb_hashmap_destroy (input->axes_location); + hb_free (input); } @@ -329,7 +346,7 @@ hb_subset_input_set_flags (hb_subset_input_t *input, * * Attaches a user-data key/data pair to the given subset input object. * - * Return value: %true if success, %false otherwise + * Return value: `true` if success, `false` otherwise * * Since: 2.9.0 **/ @@ -361,3 +378,104 @@ hb_subset_input_get_user_data (const hb_subset_input_t *input, { return hb_object_get_user_data (input, key); } + +#ifdef HB_EXPERIMENTAL_API +#ifndef HB_NO_VAR +/** + * hb_subset_input_pin_axis_to_default: (skip) + * @input: a #hb_subset_input_t object. + * @axis_tag: Tag of the axis to be pinned + * + * Pin an axis to its default location in the given subset input object. + * + * Return value: `true` if success, `false` otherwise + * + * Since: EXPERIMENTAL + **/ +HB_EXTERN hb_bool_t +hb_subset_input_pin_axis_to_default (hb_subset_input_t *input, + hb_face_t *face, + hb_tag_t axis_tag) +{ + hb_ot_var_axis_info_t axis_info; + if (!hb_ot_var_find_axis_info (face, axis_tag, &axis_info)) + return false; + + return input->axes_location->set (axis_tag, axis_info.default_value); +} + +/** + * hb_subset_input_pin_axis_location: (skip) + * @input: a #hb_subset_input_t object. + * @axis_tag: Tag of the axis to be pinned + * @axis_value: Location on the axis to be pinned at + * + * Pin an axis to a fixed location in the given subset input object. + * + * Return value: `true` if success, `false` otherwise + * + * Since: EXPERIMENTAL + **/ +HB_EXTERN hb_bool_t +hb_subset_input_pin_axis_location (hb_subset_input_t *input, + hb_face_t *face, + hb_tag_t axis_tag, + float axis_value) +{ + hb_ot_var_axis_info_t axis_info; + if (!hb_ot_var_find_axis_info (face, axis_tag, &axis_info)) + return false; + + float val = hb_clamp(axis_value, axis_info.min_value, axis_info.max_value); + return input->axes_location->set (axis_tag, val); +} +#endif +#endif + +#ifdef HB_EXPERIMENTAL_API +/** + * hb_subset_preprocess + * @input: a #hb_face_t object. + * + * Preprocesses the face and attaches data that will be needed by the + * subsetter. Future subsetting operations can then use the precomputed data + * to speed up the subsetting operation. + * + * Since: EXPERIMENTAL + **/ + +HB_EXTERN hb_face_t * +hb_subset_preprocess (hb_face_t *source) +{ + hb_subset_input_t* input = hb_subset_input_create_or_fail (); + + hb_set_clear (hb_subset_input_set(input, HB_SUBSET_SETS_UNICODE)); + hb_set_invert (hb_subset_input_set(input, HB_SUBSET_SETS_UNICODE)); + + hb_set_clear (hb_subset_input_set(input, + HB_SUBSET_SETS_LAYOUT_FEATURE_TAG)); + hb_set_invert (hb_subset_input_set(input, + HB_SUBSET_SETS_LAYOUT_FEATURE_TAG)); + + hb_set_clear (hb_subset_input_set(input, + HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG)); + hb_set_invert (hb_subset_input_set(input, + HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG)); + + hb_set_clear (hb_subset_input_set(input, + HB_SUBSET_SETS_NAME_ID)); + hb_set_invert (hb_subset_input_set(input, + HB_SUBSET_SETS_NAME_ID)); + + hb_subset_input_set_flags(input, + HB_SUBSET_FLAGS_NOTDEF_OUTLINE | + HB_SUBSET_FLAGS_GLYPH_NAMES | + HB_SUBSET_FLAGS_RETAIN_GIDS); + input->attach_accelerator_data = true; + + hb_face_t* new_source = hb_subset_or_fail (source, input); + hb_subset_input_destroy (input); + + return new_source; +} +#endif |