| /* |
| * Copyright © 2018 Adobe 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. |
| * |
| * Adobe Author(s): Michiharu Ariza |
| */ |
| |
| #include "hb.hh" |
| |
| #ifndef HB_NO_CFF |
| |
| #include "hb-draw.hh" |
| #include "hb-ot-cff1-table.hh" |
| #include "hb-cff1-interp-cs.hh" |
| |
| using namespace CFF; |
| |
| /* SID to code */ |
| static const uint8_t standard_encoding_to_code [] = |
| { |
| 0, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, |
| 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, |
| 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, |
| 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, |
| 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, |
| 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, |
| 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 177, |
| 178, 179, 180, 182, 183, 184, 185, 186, 187, 188, 189, 191, 193, 194, 195, 196, |
| 197, 198, 199, 200, 202, 203, 205, 206, 207, 208, 225, 227, 232, 233, 234, 235, |
| 241, 245, 248, 249, 250, 251 |
| }; |
| |
| /* SID to code */ |
| static const uint8_t expert_encoding_to_code [] = |
| { |
| 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 45, 46, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 58, 59, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 47, 0, 0, 0, 0, 0, 0, 0, 0, 0, 87, 88, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 201, 0, 0, 0, 0, 189, 0, 0, 188, 0, |
| 0, 0, 0, 190, 202, 0, 0, 0, 0, 203, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 48, |
| 49, 50, 51, 52, 53, 54, 55, 56, 57, 60, 61, 62, 63, 65, 66, 67, |
| 68, 69, 73, 76, 77, 78, 79, 82, 83, 84, 86, 89, 90, 91, 93, 94, |
| 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, |
| 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, |
| 161, 162, 163, 166, 167, 168, 169, 170, 172, 175, 178, 179, 182, 183, 184, 191, |
| 192, 193, 194, 195, 196, 197, 200, 204, 205, 206, 207, 208, 209, 210, 211, 212, |
| 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, |
| 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, |
| 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 |
| }; |
| |
| /* glyph ID to SID */ |
| static const uint16_t expert_charset_to_sid [] = |
| { |
| 0, 1, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 13, 14, 15, 99, |
| 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 27, 28, 249, 250, 251, 252, |
| 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, |
| 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, |
| 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, |
| 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, |
| 315, 316, 317, 318, 158, 155, 163, 319, 320, 321, 322, 323, 324, 325, 326, 150, |
| 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, |
| 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, |
| 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, |
| 373, 374, 375, 376, 377, 378 |
| }; |
| |
| /* glyph ID to SID */ |
| static const uint16_t expert_subset_charset_to_sid [] = |
| { |
| 0, 1, 231, 232, 235, 236, 237, 238, 13, 14, 15, 99, 239, 240, 241, 242, |
| 243, 244, 245, 246, 247, 248, 27, 28, 249, 250, 251, 253, 254, 255, 256, 257, |
| 258, 259, 260, 261, 262, 263, 264, 265, 266, 109, 110, 267, 268, 269, 270, 272, |
| 300, 301, 302, 305, 314, 315, 158, 155, 163, 320, 321, 322, 323, 324, 325, 326, |
| 150, 164, 169, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, |
| 340, 341, 342, 343, 344, 345, 346 |
| }; |
| |
| /* code to SID */ |
| static const uint8_t standard_encoding_to_sid [] = |
| { |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, |
| 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, |
| 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, |
| 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, |
| 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, |
| 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, |
| 0, 111, 112, 113, 114, 0, 115, 116, 117, 118, 119, 120, 121, 122, 0, 123, |
| 0, 124, 125, 126, 127, 128, 129, 130, 131, 0, 132, 133, 0, 134, 135, 136, |
| 137, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 138, 0, 139, 0, 0, 0, 0, 140, 141, 142, 143, 0, 0, 0, 0, |
| 0, 144, 0, 0, 0, 145, 0, 0, 146, 147, 148, 149, 0, 0, 0, 0 |
| }; |
| |
| hb_codepoint_t OT::cff1::lookup_standard_encoding_for_code (hb_codepoint_t sid) |
| { |
| if (sid < ARRAY_LENGTH (standard_encoding_to_code)) |
| return (hb_codepoint_t)standard_encoding_to_code[sid]; |
| else |
| return 0; |
| } |
| |
| hb_codepoint_t OT::cff1::lookup_expert_encoding_for_code (hb_codepoint_t sid) |
| { |
| if (sid < ARRAY_LENGTH (expert_encoding_to_code)) |
| return (hb_codepoint_t)expert_encoding_to_code[sid]; |
| else |
| return 0; |
| } |
| |
| hb_codepoint_t OT::cff1::lookup_expert_charset_for_sid (hb_codepoint_t glyph) |
| { |
| if (glyph < ARRAY_LENGTH (expert_charset_to_sid)) |
| return (hb_codepoint_t)expert_charset_to_sid[glyph]; |
| else |
| return 0; |
| } |
| |
| hb_codepoint_t OT::cff1::lookup_expert_subset_charset_for_sid (hb_codepoint_t glyph) |
| { |
| if (glyph < ARRAY_LENGTH (expert_subset_charset_to_sid)) |
| return (hb_codepoint_t)expert_subset_charset_to_sid[glyph]; |
| else |
| return 0; |
| } |
| |
| hb_codepoint_t OT::cff1::lookup_standard_encoding_for_sid (hb_codepoint_t code) |
| { |
| if (code < ARRAY_LENGTH (standard_encoding_to_sid)) |
| return (hb_codepoint_t)standard_encoding_to_sid[code]; |
| else |
| return CFF_UNDEF_SID; |
| } |
| |
| struct bounds_t |
| { |
| void init () |
| { |
| min.set_int (INT_MAX, INT_MAX); |
| max.set_int (INT_MIN, INT_MIN); |
| } |
| |
| void update (const point_t &pt) |
| { |
| if (pt.x < min.x) min.x = pt.x; |
| if (pt.x > max.x) max.x = pt.x; |
| if (pt.y < min.y) min.y = pt.y; |
| if (pt.y > max.y) max.y = pt.y; |
| } |
| |
| void merge (const bounds_t &b) |
| { |
| if (empty ()) |
| *this = b; |
| else if (!b.empty ()) |
| { |
| if (b.min.x < min.x) min.x = b.min.x; |
| if (b.max.x > max.x) max.x = b.max.x; |
| if (b.min.y < min.y) min.y = b.min.y; |
| if (b.max.y > max.y) max.y = b.max.y; |
| } |
| } |
| |
| void offset (const point_t &delta) |
| { |
| if (!empty ()) |
| { |
| min.move (delta); |
| max.move (delta); |
| } |
| } |
| |
| bool empty () const { return (min.x >= max.x) || (min.y >= max.y); } |
| |
| point_t min; |
| point_t max; |
| }; |
| |
| struct cff1_extents_param_t |
| { |
| void init (const OT::cff1::accelerator_t *_cff) |
| { |
| path_open = false; |
| cff = _cff; |
| bounds.init (); |
| } |
| |
| void start_path () { path_open = true; } |
| void end_path () { path_open = false; } |
| bool is_path_open () const { return path_open; } |
| |
| bool path_open; |
| bounds_t bounds; |
| |
| const OT::cff1::accelerator_t *cff; |
| }; |
| |
| struct cff1_path_procs_extents_t : path_procs_t<cff1_path_procs_extents_t, cff1_cs_interp_env_t, cff1_extents_param_t> |
| { |
| static void moveto (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt) |
| { |
| param.end_path (); |
| env.moveto (pt); |
| } |
| |
| static void line (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt1) |
| { |
| if (!param.is_path_open ()) |
| { |
| param.start_path (); |
| param.bounds.update (env.get_pt ()); |
| } |
| env.moveto (pt1); |
| param.bounds.update (env.get_pt ()); |
| } |
| |
| static void curve (cff1_cs_interp_env_t &env, cff1_extents_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) |
| { |
| if (!param.is_path_open ()) |
| { |
| param.start_path (); |
| param.bounds.update (env.get_pt ()); |
| } |
| /* include control points */ |
| param.bounds.update (pt1); |
| param.bounds.update (pt2); |
| env.moveto (pt3); |
| param.bounds.update (env.get_pt ()); |
| } |
| }; |
| |
| static bool _get_bounds (const OT::cff1::accelerator_t *cff, hb_codepoint_t glyph, bounds_t &bounds, bool in_seac=false); |
| |
| struct cff1_cs_opset_extents_t : cff1_cs_opset_t<cff1_cs_opset_extents_t, cff1_extents_param_t, cff1_path_procs_extents_t> |
| { |
| static void process_seac (cff1_cs_interp_env_t &env, cff1_extents_param_t& param) |
| { |
| unsigned int n = env.argStack.get_count (); |
| point_t delta; |
| delta.x = env.argStack[n-4]; |
| delta.y = env.argStack[n-3]; |
| hb_codepoint_t base = param.cff->std_code_to_glyph (env.argStack[n-2].to_int ()); |
| hb_codepoint_t accent = param.cff->std_code_to_glyph (env.argStack[n-1].to_int ()); |
| |
| bounds_t base_bounds, accent_bounds; |
| if (likely (!env.in_seac && base && accent |
| && _get_bounds (param.cff, base, base_bounds, true) |
| && _get_bounds (param.cff, accent, accent_bounds, true))) |
| { |
| param.bounds.merge (base_bounds); |
| accent_bounds.offset (delta); |
| param.bounds.merge (accent_bounds); |
| } |
| else |
| env.set_error (); |
| } |
| }; |
| |
| bool _get_bounds (const OT::cff1::accelerator_t *cff, hb_codepoint_t glyph, bounds_t &bounds, bool in_seac) |
| { |
| bounds.init (); |
| if (unlikely (!cff->is_valid () || (glyph >= cff->num_glyphs))) return false; |
| |
| unsigned int fd = cff->fdSelect->get_fd (glyph); |
| cff1_cs_interpreter_t<cff1_cs_opset_extents_t, cff1_extents_param_t> interp; |
| const byte_str_t str = (*cff->charStrings)[glyph]; |
| interp.env.init (str, *cff, fd); |
| interp.env.set_in_seac (in_seac); |
| cff1_extents_param_t param; |
| param.init (cff); |
| if (unlikely (!interp.interpret (param))) return false; |
| bounds = param.bounds; |
| return true; |
| } |
| |
| bool OT::cff1::accelerator_t::get_extents (hb_font_t *font, hb_codepoint_t glyph, hb_glyph_extents_t *extents) const |
| { |
| #ifdef HB_NO_OT_FONT_CFF |
| /* XXX Remove check when this code moves to .hh file. */ |
| return true; |
| #endif |
| |
| bounds_t bounds; |
| |
| if (!_get_bounds (this, glyph, bounds)) |
| return false; |
| |
| if (bounds.min.x >= bounds.max.x) |
| { |
| extents->width = 0; |
| extents->x_bearing = 0; |
| } |
| else |
| { |
| extents->x_bearing = font->em_scalef_x (bounds.min.x.to_real ()); |
| extents->width = font->em_scalef_x (bounds.max.x.to_real () - bounds.min.x.to_real ()); |
| } |
| if (bounds.min.y >= bounds.max.y) |
| { |
| extents->height = 0; |
| extents->y_bearing = 0; |
| } |
| else |
| { |
| extents->y_bearing = font->em_scalef_y (bounds.max.y.to_real ()); |
| extents->height = font->em_scalef_y (bounds.min.y.to_real () - bounds.max.y.to_real ()); |
| } |
| |
| return true; |
| } |
| |
| struct cff1_path_param_t |
| { |
| cff1_path_param_t (const OT::cff1::accelerator_t *cff_, hb_font_t *font_, |
| const hb_draw_funcs_t *funcs_, void *user_data_, |
| point_t *delta_) |
| { |
| path_open = false; |
| cff = cff_; |
| font = font_; |
| funcs = funcs_; |
| user_data = user_data_; |
| delta = delta_; |
| } |
| ~cff1_path_param_t () { end_path (); } |
| |
| void start_path () { path_open = true; } |
| void end_path () { if (path_open) funcs->close_path (user_data); path_open = false; } |
| bool is_path_open () const { return path_open; } |
| |
| void move_to (const point_t &p) |
| { |
| point_t point = p; |
| if (delta) point.move (*delta); |
| funcs->move_to (font->em_scalef_x (point.x.to_real ()), font->em_scalef_y (point.y.to_real ()), |
| user_data); |
| } |
| |
| void line_to (const point_t &p) |
| { |
| point_t point = p; |
| if (delta) point.move (*delta); |
| funcs->line_to (font->em_scalef_x (point.x.to_real ()), font->em_scalef_y (point.y.to_real ()), |
| user_data); |
| } |
| |
| void cubic_to (const point_t &p1, const point_t &p2, const point_t &p3) |
| { |
| point_t point1 = p1, point2 = p2, point3 = p3; |
| if (delta) |
| { |
| point1.move (*delta); |
| point2.move (*delta); |
| point3.move (*delta); |
| } |
| funcs->cubic_to (font->em_scalef_x (point1.x.to_real ()), font->em_scalef_y (point1.y.to_real ()), |
| font->em_scalef_x (point2.x.to_real ()), font->em_scalef_y (point2.y.to_real ()), |
| font->em_scalef_x (point3.x.to_real ()), font->em_scalef_y (point3.y.to_real ()), |
| user_data); |
| } |
| |
| bool path_open; |
| hb_font_t *font; |
| const hb_draw_funcs_t *funcs; |
| void *user_data; |
| point_t *delta; |
| |
| const OT::cff1::accelerator_t *cff; |
| }; |
| |
| struct cff1_path_procs_path_t : path_procs_t<cff1_path_procs_path_t, cff1_cs_interp_env_t, cff1_path_param_t> |
| { |
| static void moveto (cff1_cs_interp_env_t &env, cff1_path_param_t& param, const point_t &pt) |
| { |
| param.end_path (); |
| param.move_to (pt); |
| env.moveto (pt); |
| } |
| |
| static void line (cff1_cs_interp_env_t &env, cff1_path_param_t& param, const point_t &pt1) |
| { |
| if (!param.is_path_open ()) param.start_path (); |
| param.line_to (pt1); |
| env.moveto (pt1); |
| } |
| |
| static void curve (cff1_cs_interp_env_t &env, cff1_path_param_t& param, const point_t &pt1, const point_t &pt2, const point_t &pt3) |
| { |
| if (!param.is_path_open ()) param.start_path (); |
| param.cubic_to (pt1, pt2, pt3); |
| env.moveto (pt3); |
| } |
| }; |
| |
| static bool _get_path (const OT::cff1::accelerator_t *cff, hb_font_t *font, hb_codepoint_t glyph, |
| const hb_draw_funcs_t *funcs, void *user_data, |
| bool in_seac = false, point_t *delta = nullptr); |
| |
| struct cff1_cs_opset_path_t : cff1_cs_opset_t<cff1_cs_opset_path_t, cff1_path_param_t, cff1_path_procs_path_t> |
| { |
| static void process_seac (cff1_cs_interp_env_t &env, cff1_path_param_t& param) |
| { |
| unsigned int n = env.argStack.get_count (); |
| point_t delta; |
| delta.x = env.argStack[n-4]; |
| delta.y = env.argStack[n-3]; |
| hb_codepoint_t base = param.cff->std_code_to_glyph (env.argStack[n-2].to_int ()); |
| hb_codepoint_t accent = param.cff->std_code_to_glyph (env.argStack[n-1].to_int ()); |
| |
| if (unlikely (!(!env.in_seac && base && accent |
| && _get_path (param.cff, param.font, base, param.funcs, param.user_data, true) |
| && _get_path (param.cff, param.font, accent, param.funcs, param.user_data, true, &delta)))) |
| env.set_error (); |
| } |
| }; |
| |
| bool _get_path (const OT::cff1::accelerator_t *cff, hb_font_t *font, hb_codepoint_t glyph, |
| const hb_draw_funcs_t *funcs, void *user_data, bool in_seac, point_t *delta) |
| { |
| if (unlikely (!cff->is_valid () || (glyph >= cff->num_glyphs))) return false; |
| |
| unsigned int fd = cff->fdSelect->get_fd (glyph); |
| cff1_cs_interpreter_t<cff1_cs_opset_path_t, cff1_path_param_t> interp; |
| const byte_str_t str = (*cff->charStrings)[glyph]; |
| interp.env.init (str, *cff, fd); |
| interp.env.set_in_seac (in_seac); |
| cff1_path_param_t param (cff, font, funcs, user_data, delta); |
| if (unlikely (!interp.interpret (param))) return false; |
| return true; |
| } |
| |
| bool OT::cff1::accelerator_t::get_path (hb_font_t *font, hb_codepoint_t glyph, |
| const hb_draw_funcs_t *funcs, void *user_data) const |
| { |
| #ifdef HB_NO_OT_FONT_CFF |
| /* XXX Remove check when this code moves to .hh file. */ |
| return true; |
| #endif |
| |
| return _get_path (this, font, glyph, funcs, user_data); |
| } |
| |
| struct get_seac_param_t |
| { |
| void init (const OT::cff1::accelerator_t *_cff) |
| { |
| cff = _cff; |
| base = 0; |
| accent = 0; |
| } |
| |
| bool has_seac () const { return base && accent; } |
| |
| const OT::cff1::accelerator_t *cff; |
| hb_codepoint_t base; |
| hb_codepoint_t accent; |
| }; |
| |
| struct cff1_cs_opset_seac_t : cff1_cs_opset_t<cff1_cs_opset_seac_t, get_seac_param_t> |
| { |
| static void process_seac (cff1_cs_interp_env_t &env, get_seac_param_t& param) |
| { |
| unsigned int n = env.argStack.get_count (); |
| hb_codepoint_t base_char = (hb_codepoint_t)env.argStack[n-2].to_int (); |
| hb_codepoint_t accent_char = (hb_codepoint_t)env.argStack[n-1].to_int (); |
| |
| param.base = param.cff->std_code_to_glyph (base_char); |
| param.accent = param.cff->std_code_to_glyph (accent_char); |
| } |
| }; |
| |
| bool OT::cff1::accelerator_t::get_seac_components (hb_codepoint_t glyph, hb_codepoint_t *base, hb_codepoint_t *accent) const |
| { |
| if (unlikely (!is_valid () || (glyph >= num_glyphs))) return false; |
| |
| unsigned int fd = fdSelect->get_fd (glyph); |
| cff1_cs_interpreter_t<cff1_cs_opset_seac_t, get_seac_param_t> interp; |
| const byte_str_t str = (*charStrings)[glyph]; |
| interp.env.init (str, *this, fd); |
| get_seac_param_t param; |
| param.init (this); |
| if (unlikely (!interp.interpret (param))) return false; |
| |
| if (param.has_seac ()) |
| { |
| *base = param.base; |
| *accent = param.accent; |
| return true; |
| } |
| return false; |
| } |
| |
| |
| #endif |
