198 lines
7.9 KiB
C
198 lines
7.9 KiB
C
/* Pango
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* pango-ot.h:
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*
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* Copyright (C) 2000,2007 Red Hat Software
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __PANGO_OT_H__
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#define __PANGO_OT_H__
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#include <pango/pangofc-font.h>
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#include <pango/pango-glyph.h>
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#include <pango/pango-font.h>
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#include <pango/pango-script.h>
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#include <pango/pango-language.h>
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G_BEGIN_DECLS
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#ifdef PANGO_ENABLE_ENGINE
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typedef guint32 PangoOTTag;
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#define PANGO_OT_TAG_MAKE(c1,c2,c3,c4) ((PangoOTTag) FT_MAKE_TAG (c1, c2, c3, c4))
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#define PANGO_OT_TAG_MAKE_FROM_STRING(s) (PANGO_OT_TAG_MAKE(((const char *) s)[0], \
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((const char *) s)[1], \
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((const char *) s)[2], \
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((const char *) s)[3]))
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typedef struct _PangoOTInfo PangoOTInfo;
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typedef struct _PangoOTBuffer PangoOTBuffer;
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typedef struct _PangoOTGlyph PangoOTGlyph;
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typedef struct _PangoOTRuleset PangoOTRuleset;
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typedef struct _PangoOTFeatureMap PangoOTFeatureMap;
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typedef struct _PangoOTRulesetDescription PangoOTRulesetDescription;
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typedef enum
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{
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PANGO_OT_TABLE_GSUB,
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PANGO_OT_TABLE_GPOS
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} PangoOTTableType;
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#define PANGO_OT_ALL_GLYPHS ((guint) 0xFFFF)
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#define PANGO_OT_NO_FEATURE ((guint) 0xFFFF)
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#define PANGO_OT_NO_SCRIPT ((guint) 0xFFFF)
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#define PANGO_OT_DEFAULT_LANGUAGE ((guint) 0xFFFF)
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#define PANGO_OT_TAG_DEFAULT_SCRIPT PANGO_OT_TAG_MAKE ('D', 'F', 'L', 'T')
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#define PANGO_OT_TAG_DEFAULT_LANGUAGE PANGO_OT_TAG_MAKE ('d', 'f', 'l', 't')
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/* Note that this must match hb_glyph_info_t */
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struct _PangoOTGlyph
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{
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guint32 glyph;
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guint properties;
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guint cluster;
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gushort component;
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gushort ligID;
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guint internal;
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};
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struct _PangoOTFeatureMap
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{
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char feature_name[5];
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gulong property_bit;
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};
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struct _PangoOTRulesetDescription {
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PangoScript script;
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PangoLanguage *language;
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const PangoOTFeatureMap *static_gsub_features;
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guint n_static_gsub_features;
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const PangoOTFeatureMap *static_gpos_features;
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guint n_static_gpos_features;
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const PangoOTFeatureMap *other_features;
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guint n_other_features;
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};
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#define PANGO_TYPE_OT_INFO (pango_ot_info_get_type ())
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#define PANGO_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_INFO, PangoOTInfo))
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#define PANGO_IS_OT_INFO(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_INFO))
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GType pango_ot_info_get_type (void) G_GNUC_CONST;
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#define PANGO_TYPE_OT_RULESET (pango_ot_ruleset_get_type ())
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#define PANGO_OT_RULESET(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), PANGO_TYPE_OT_RULESET, PangoOTRuleset))
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#define PANGO_IS_OT_RULESET(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), PANGO_TYPE_OT_RULESET))
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GType pango_ot_ruleset_get_type (void) G_GNUC_CONST;
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PangoOTInfo *pango_ot_info_get (FT_Face face);
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gboolean pango_ot_info_find_script (PangoOTInfo *info,
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PangoOTTableType table_type,
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PangoOTTag script_tag,
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guint *script_index);
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gboolean pango_ot_info_find_language (PangoOTInfo *info,
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PangoOTTableType table_type,
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guint script_index,
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PangoOTTag language_tag,
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guint *language_index,
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guint *required_feature_index);
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gboolean pango_ot_info_find_feature (PangoOTInfo *info,
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PangoOTTableType table_type,
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PangoOTTag feature_tag,
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guint script_index,
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guint language_index,
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guint *feature_index);
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PangoOTTag *pango_ot_info_list_scripts (PangoOTInfo *info,
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PangoOTTableType table_type);
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PangoOTTag *pango_ot_info_list_languages (PangoOTInfo *info,
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PangoOTTableType table_type,
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guint script_index,
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PangoOTTag language_tag);
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PangoOTTag *pango_ot_info_list_features (PangoOTInfo *info,
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PangoOTTableType table_type,
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PangoOTTag tag,
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guint script_index,
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guint language_index);
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PangoOTBuffer *pango_ot_buffer_new (PangoFcFont *font);
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void pango_ot_buffer_destroy (PangoOTBuffer *buffer);
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void pango_ot_buffer_clear (PangoOTBuffer *buffer);
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void pango_ot_buffer_set_rtl (PangoOTBuffer *buffer,
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gboolean rtl);
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void pango_ot_buffer_add_glyph (PangoOTBuffer *buffer,
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guint glyph,
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guint properties,
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guint cluster);
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void pango_ot_buffer_get_glyphs (const PangoOTBuffer *buffer,
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PangoOTGlyph **glyphs,
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int *n_glyphs);
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void pango_ot_buffer_output (const PangoOTBuffer *buffer,
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PangoGlyphString *glyphs);
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void pango_ot_buffer_set_zero_width_marks (PangoOTBuffer *buffer,
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gboolean zero_width_marks);
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const PangoOTRuleset *pango_ot_ruleset_get_for_description (PangoOTInfo *info,
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const PangoOTRulesetDescription *desc);
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PangoOTRuleset *pango_ot_ruleset_new (PangoOTInfo *info);
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PangoOTRuleset *pango_ot_ruleset_new_for (PangoOTInfo *info,
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PangoScript script,
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PangoLanguage *language);
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PangoOTRuleset *pango_ot_ruleset_new_from_description (PangoOTInfo *info,
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const PangoOTRulesetDescription *desc);
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void pango_ot_ruleset_add_feature (PangoOTRuleset *ruleset,
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PangoOTTableType table_type,
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guint feature_index,
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gulong property_bit);
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gboolean pango_ot_ruleset_maybe_add_feature (PangoOTRuleset *ruleset,
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PangoOTTableType table_type,
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PangoOTTag feature_tag,
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gulong property_bit);
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guint pango_ot_ruleset_maybe_add_features (PangoOTRuleset *ruleset,
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PangoOTTableType table_type,
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const PangoOTFeatureMap *features,
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guint n_features);
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guint pango_ot_ruleset_get_feature_count (const PangoOTRuleset *ruleset,
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guint *n_gsub_features,
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guint *n_gpos_features);
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void pango_ot_ruleset_substitute (const PangoOTRuleset *ruleset,
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PangoOTBuffer *buffer);
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void pango_ot_ruleset_position (const PangoOTRuleset *ruleset,
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PangoOTBuffer *buffer);
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PangoScript pango_ot_tag_to_script (PangoOTTag script_tag) G_GNUC_CONST;
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PangoOTTag pango_ot_tag_from_script (PangoScript script) G_GNUC_CONST;
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PangoLanguage *pango_ot_tag_to_language (PangoOTTag language_tag) G_GNUC_CONST;
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PangoOTTag pango_ot_tag_from_language (PangoLanguage *language) G_GNUC_CONST;
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guint pango_ot_ruleset_description_hash (const PangoOTRulesetDescription *desc) G_GNUC_PURE;
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gboolean pango_ot_ruleset_description_equal (const PangoOTRulesetDescription *desc1,
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const PangoOTRulesetDescription *desc2) G_GNUC_PURE;
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PangoOTRulesetDescription *pango_ot_ruleset_description_copy (const PangoOTRulesetDescription *desc);
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void pango_ot_ruleset_description_free (PangoOTRulesetDescription *desc);
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#endif /* PANGO_ENABLE_ENGINE */
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G_END_DECLS
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#endif /* __PANGO_OT_H__ */
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