/* cairo - a vector graphics library with display and print output * * Copyright © 2006 Red Hat, Inc * * This library is free software; you can redistribute it and/or * modify it either under the terms of the GNU Lesser General Public * License version 2.1 as published by the Free Software Foundation * (the "LGPL") or, at your option, under the terms of the Mozilla * Public License Version 1.1 (the "MPL"). If you do not alter this * notice, a recipient may use your version of this file under either * the MPL or the LGPL. * * You should have received a copy of the LGPL along with this library * in the file COPYING-LGPL-2.1; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA * You should have received a copy of the MPL along with this library * in the file COPYING-MPL-1.1 * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY * OF ANY KIND, either express or implied. See the LGPL or the MPL for * the specific language governing rights and limitations. * * The Original Code is the cairo graphics library. * * The Initial Developer of the Original Code is Red Hat, Inc. * * Contributor(s): * Kristian Høgsberg * Adrian Johnson */ #ifndef CAIRO_TRUETYPE_SUBSET_PRIVATE_H #define CAIRO_TRUETYPE_SUBSET_PRIVATE_H #include "cairoint.h" #if CAIRO_HAS_FONT_SUBSET /* The structs defined here should strictly follow the TrueType * specification and not be padded. We use only 16-bit integer * in their definition to guarantee that. The fields of type * "FIXED" in the TT spec are broken into two *_1 and *_2 16-bit * parts, and 64-bit members are broken into four. * * The test truetype-tables in the test suite makes sure that * these tables have the right size. Please update that test * if you add new tables/structs that should be packed. */ #define MAKE_TT_TAG(a, b, c, d) (a<<24 | b<<16 | c<<8 | d) #define TT_TAG_CFF MAKE_TT_TAG('C','F','F',' ') #define TT_TAG_cmap MAKE_TT_TAG('c','m','a','p') #define TT_TAG_cvt MAKE_TT_TAG('c','v','t',' ') #define TT_TAG_fpgm MAKE_TT_TAG('f','p','g','m') #define TT_TAG_glyf MAKE_TT_TAG('g','l','y','f') #define TT_TAG_head MAKE_TT_TAG('h','e','a','d') #define TT_TAG_hhea MAKE_TT_TAG('h','h','e','a') #define TT_TAG_hmtx MAKE_TT_TAG('h','m','t','x') #define TT_TAG_loca MAKE_TT_TAG('l','o','c','a') #define TT_TAG_maxp MAKE_TT_TAG('m','a','x','p') #define TT_TAG_name MAKE_TT_TAG('n','a','m','e') #define TT_TAG_OS2 MAKE_TT_TAG('O','S','/','2') #define TT_TAG_post MAKE_TT_TAG('p','o','s','t') #define TT_TAG_prep MAKE_TT_TAG('p','r','e','p') /* All tt_* structs are big-endian */ typedef struct _tt_cmap_index { uint16_t platform; uint16_t encoding; uint32_t offset; } tt_cmap_index_t; typedef struct _tt_cmap { uint16_t version; uint16_t num_tables; tt_cmap_index_t index[1]; } tt_cmap_t; typedef struct _segment_map { uint16_t format; uint16_t length; uint16_t version; uint16_t segCountX2; uint16_t searchRange; uint16_t entrySelector; uint16_t rangeShift; uint16_t endCount[1]; } tt_segment_map_t; typedef struct _tt_head { int16_t version_1; int16_t version_2; int16_t revision_1; int16_t revision_2; uint16_t checksum_1; uint16_t checksum_2; uint16_t magic_1; uint16_t magic_2; uint16_t flags; uint16_t units_per_em; int16_t created_1; int16_t created_2; int16_t created_3; int16_t created_4; int16_t modified_1; int16_t modified_2; int16_t modified_3; int16_t modified_4; int16_t x_min; /* FWORD */ int16_t y_min; /* FWORD */ int16_t x_max; /* FWORD */ int16_t y_max; /* FWORD */ uint16_t mac_style; uint16_t lowest_rec_pppem; int16_t font_direction_hint; int16_t index_to_loc_format; int16_t glyph_data_format; } tt_head_t; typedef struct _tt_hhea { int16_t version_1; int16_t version_2; int16_t ascender; /* FWORD */ int16_t descender; /* FWORD */ int16_t line_gap; /* FWORD */ uint16_t advance_max_width; /* UFWORD */ int16_t min_left_side_bearing; /* FWORD */ int16_t min_right_side_bearing; /* FWORD */ int16_t x_max_extent; /* FWORD */ int16_t caret_slope_rise; int16_t caret_slope_run; int16_t reserved[5]; int16_t metric_data_format; uint16_t num_hmetrics; } tt_hhea_t; typedef struct _tt_maxp { int16_t version_1; int16_t version_2; uint16_t num_glyphs; uint16_t max_points; uint16_t max_contours; uint16_t max_composite_points; uint16_t max_composite_contours; uint16_t max_zones; uint16_t max_twilight_points; uint16_t max_storage; uint16_t max_function_defs; uint16_t max_instruction_defs; uint16_t max_stack_elements; uint16_t max_size_of_instructions; uint16_t max_component_elements; uint16_t max_component_depth; } tt_maxp_t; typedef struct _tt_name_record { uint16_t platform; uint16_t encoding; uint16_t language; uint16_t name; uint16_t length; uint16_t offset; } tt_name_record_t; typedef struct _tt_name { uint16_t format; uint16_t num_records; uint16_t strings_offset; tt_name_record_t records[1]; } tt_name_t; /* bitmask for fsSelection field */ #define TT_FS_SELECTION_ITALIC 1 #define TT_FS_SELECTION_BOLD 32 /* _unused fields are defined in TT spec but not used by cairo */ typedef struct _tt_os2 { uint16_t _unused1[2]; uint16_t usWeightClass; uint16_t _unused2[28]; uint16_t fsSelection; uint16_t _unused3[11]; } tt_os2_t; /* composite_glyph_t flags */ #define TT_ARG_1_AND_2_ARE_WORDS 0x0001 #define TT_WE_HAVE_A_SCALE 0x0008 #define TT_MORE_COMPONENTS 0x0020 #define TT_WE_HAVE_AN_X_AND_Y_SCALE 0x0040 #define TT_WE_HAVE_A_TWO_BY_TWO 0x0080 typedef struct _tt_composite_glyph { uint16_t flags; uint16_t index; uint16_t args[6]; /* 1 to 6 arguments depending on value of flags */ } tt_composite_glyph_t; typedef struct _tt_glyph_data { int16_t num_contours; int8_t data[8]; tt_composite_glyph_t glyph; } tt_glyph_data_t; #endif /* CAIRO_HAS_FONT_SUBSET */ #endif /* CAIRO_TRUETYPE_SUBSET_PRIVATE_H */