Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 247 insertions, 0 deletions

diff --git a/gfx/harfbuzz/src/hb-subset.h b/gfx/harfbuzz/src/hb-subset.h
new file mode 100644
index 0000000000..d79e7f762a
--- /dev/null
+++ b/gfx/harfbuzz/src/hb-subset.h
@@ -0,0 +1,247 @@
+/*
+ * Copyright © 2018  Google, Inc.
+ *
+ *  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
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Rod Sheeter
+ */
+
+#ifndef HB_SUBSET_H
+#define HB_SUBSET_H
+
+#include "hb.h"
+#include "hb-ot.h"
+
+HB_BEGIN_DECLS
+
+/**
+ * hb_subset_input_t:
+ *
+ * Things that change based on the input. Characters to keep, etc.
+ */
+
+typedef struct hb_subset_input_t hb_subset_input_t;
+
+/**
+ * hb_subset_plan_t:
+ *
+ * Contains information about how the subset operation will be executed.
+ * Such as mappings from the old glyph ids to the new ones in the subset.
+ */
+
+typedef struct hb_subset_plan_t hb_subset_plan_t;
+
+/**
+ * hb_subset_flags_t:
+ * @HB_SUBSET_FLAGS_DEFAULT: all flags at their default value of false.
+ * @HB_SUBSET_FLAGS_NO_HINTING: If set hinting instructions will be dropped in
+ * the produced subset. Otherwise hinting instructions will be retained.
+ * @HB_SUBSET_FLAGS_RETAIN_GIDS: If set glyph indices will not be modified in
+ * the produced subset. If glyphs are dropped their indices will be retained
+ * as an empty glyph.
+ * @HB_SUBSET_FLAGS_DESUBROUTINIZE: If set and subsetting a CFF font the
+ * subsetter will attempt to remove subroutines from the CFF glyphs.
+ * @HB_SUBSET_FLAGS_NAME_LEGACY: If set non-unicode name records will be
+ * retained in the subset.
+ * @HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG:	If set the subsetter will set the
+ * OVERLAP_SIMPLE flag on each simple glyph.
+ * @HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED: If set the subsetter will not
+ * drop unrecognized tables and instead pass them through untouched.
+ * @HB_SUBSET_FLAGS_NOTDEF_OUTLINE: If set the notdef glyph outline will be
+ * retained in the final subset.
+ * @HB_SUBSET_FLAGS_GLYPH_NAMES: If set the PS glyph names will be retained
+ * in the final subset.
+ * @HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES: If set then the unicode ranges in
+ * OS/2 will not be recalculated.
+ * @HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE: If set don't perform glyph closure on layout
+ * substitution rules (GSUB). Since: 7.2.0.
+ * @HB_SUBSET_FLAGS_IFTB_REQUIREMENTS: If set enforce requirements on the output subset
+ * to allow it to be used with incremental font transfer IFTB patches. Primarily,
+ * this forces all outline data to use long (32 bit) offsets. Since: EXPERIMENTAL
+ *
+ * List of boolean properties that can be configured on the subset input.
+ *
+ * Since: 2.9.0
+ **/
+typedef enum { /*< flags >*/
+  HB_SUBSET_FLAGS_DEFAULT =		     0x00000000u,
+  HB_SUBSET_FLAGS_NO_HINTING =		     0x00000001u,
+  HB_SUBSET_FLAGS_RETAIN_GIDS =		     0x00000002u,
+  HB_SUBSET_FLAGS_DESUBROUTINIZE =	     0x00000004u,
+  HB_SUBSET_FLAGS_NAME_LEGACY =		     0x00000008u,
+  HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG =	     0x00000010u,
+  HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED = 0x00000020u,
+  HB_SUBSET_FLAGS_NOTDEF_OUTLINE =	     0x00000040u,
+  HB_SUBSET_FLAGS_GLYPH_NAMES =		     0x00000080u,
+  HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES =  0x00000100u,
+  HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE =        0x00000200u,
+#ifdef HB_EXPERIMENTAL_API
+  HB_SUBSET_FLAGS_IFTB_REQUIREMENTS       =  0x00000400u,
+#endif
+} hb_subset_flags_t;
+
+/**
+ * hb_subset_sets_t:
+ * @HB_SUBSET_SETS_GLYPH_INDEX: the set of glyph indexes to retain in the subset.
+ * @HB_SUBSET_SETS_UNICODE: the set of unicode codepoints to retain in the subset.
+ * @HB_SUBSET_SETS_NO_SUBSET_TABLE_TAG: the set of table tags which specifies tables that should not be
+ * subsetted.
+ * @HB_SUBSET_SETS_DROP_TABLE_TAG: the set of table tags which specifies tables which will be dropped
+ * in the subset.
+ * @HB_SUBSET_SETS_NAME_ID: the set of name ids that will be retained.
+ * @HB_SUBSET_SETS_NAME_LANG_ID: the set of name lang ids that will be retained.
+ * @HB_SUBSET_SETS_LAYOUT_FEATURE_TAG: the set of layout feature tags that will be retained
+ * in the subset.
+ * @HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG: the set of layout script tags that will be retained
+ * in the subset. Defaults to all tags. Since: 5.0.0
+ *
+ * List of sets that can be configured on the subset input.
+ *
+ * Since: 2.9.1
+ **/
+typedef enum {
+  HB_SUBSET_SETS_GLYPH_INDEX = 0,
+  HB_SUBSET_SETS_UNICODE,
+  HB_SUBSET_SETS_NO_SUBSET_TABLE_TAG,
+  HB_SUBSET_SETS_DROP_TABLE_TAG,
+  HB_SUBSET_SETS_NAME_ID,
+  HB_SUBSET_SETS_NAME_LANG_ID,
+  HB_SUBSET_SETS_LAYOUT_FEATURE_TAG,
+  HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG,
+} hb_subset_sets_t;
+
+HB_EXTERN hb_subset_input_t *
+hb_subset_input_create_or_fail (void);
+
+HB_EXTERN hb_subset_input_t *
+hb_subset_input_reference (hb_subset_input_t *input);
+
+HB_EXTERN void
+hb_subset_input_destroy (hb_subset_input_t *input);
+
+HB_EXTERN hb_bool_t
+hb_subset_input_set_user_data (hb_subset_input_t  *input,
+			       hb_user_data_key_t *key,
+			       void *		   data,
+			       hb_destroy_func_t   destroy,
+			       hb_bool_t	   replace);
+
+HB_EXTERN void *
+hb_subset_input_get_user_data (const hb_subset_input_t *input,
+			       hb_user_data_key_t      *key);
+
+HB_EXTERN void
+hb_subset_input_keep_everything (hb_subset_input_t *input);
+
+HB_EXTERN hb_set_t *
+hb_subset_input_unicode_set (hb_subset_input_t *input);
+
+HB_EXTERN hb_set_t *
+hb_subset_input_glyph_set (hb_subset_input_t *input);
+
+HB_EXTERN hb_set_t *
+hb_subset_input_set (hb_subset_input_t *input, hb_subset_sets_t set_type);
+
+HB_EXTERN hb_map_t*
+hb_subset_input_old_to_new_glyph_mapping (hb_subset_input_t *input);
+
+HB_EXTERN hb_subset_flags_t
+hb_subset_input_get_flags (hb_subset_input_t *input);
+
+HB_EXTERN void
+hb_subset_input_set_flags (hb_subset_input_t *input,
+			   unsigned value);
+
+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_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);
+
+#ifdef HB_EXPERIMENTAL_API
+HB_EXTERN hb_bool_t
+hb_subset_input_set_axis_range (hb_subset_input_t  *input,
+				hb_face_t          *face,
+				hb_tag_t            axis_tag,
+				float               axis_min_value,
+				float               axis_max_value,
+				float              *axis_def_value);
+
+HB_EXTERN hb_bool_t
+hb_subset_input_override_name_table (hb_subset_input_t  *input,
+				     hb_ot_name_id_t     name_id,
+				     unsigned            platform_id,
+				     unsigned            encoding_id,
+				     unsigned            language_id,
+				     const char         *name_str,
+				     int                 str_len);
+
+#endif
+
+HB_EXTERN hb_face_t *
+hb_subset_preprocess (hb_face_t *source);
+
+HB_EXTERN hb_face_t *
+hb_subset_or_fail (hb_face_t *source, const hb_subset_input_t *input);
+
+HB_EXTERN hb_face_t *
+hb_subset_plan_execute_or_fail (hb_subset_plan_t *plan);
+
+HB_EXTERN hb_subset_plan_t *
+hb_subset_plan_create_or_fail (hb_face_t                 *face,
+                               const hb_subset_input_t   *input);
+
+HB_EXTERN void
+hb_subset_plan_destroy (hb_subset_plan_t *plan);
+
+HB_EXTERN hb_map_t *
+hb_subset_plan_old_to_new_glyph_mapping (const hb_subset_plan_t *plan);
+
+HB_EXTERN hb_map_t *
+hb_subset_plan_new_to_old_glyph_mapping (const hb_subset_plan_t *plan);
+
+HB_EXTERN hb_map_t *
+hb_subset_plan_unicode_to_old_glyph_mapping (const hb_subset_plan_t *plan);
+
+
+HB_EXTERN hb_subset_plan_t *
+hb_subset_plan_reference (hb_subset_plan_t *plan);
+
+HB_EXTERN hb_bool_t
+hb_subset_plan_set_user_data (hb_subset_plan_t   *plan,
+                              hb_user_data_key_t *key,
+                              void               *data,
+                              hb_destroy_func_t   destroy,
+                              hb_bool_t	          replace);
+
+HB_EXTERN void *
+hb_subset_plan_get_user_data (const hb_subset_plan_t *plan,
+                              hb_user_data_key_t     *key);
+
+
+HB_END_DECLS
+
+#endif /* HB_SUBSET_H */