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Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/hb-wasm-api.h')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/hb-wasm-api.h | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-wasm-api.h b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-wasm-api.h new file mode 100644 index 00000000000..f9bd98e5ea0 --- /dev/null +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-wasm-api.h @@ -0,0 +1,319 @@ +/* + * Copyright © 2023 Behdad Esfahbod + * + * 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. + */ + +#ifndef HB_WASM_API_H +#define HB_WASM_API_H + +/* +#include "hb.h" +*/ + +#include <stdint.h> + + +#ifndef HB_WASM_BEGIN_DECLS +# ifdef __cplusplus +# define HB_WASM_BEGIN_DECLS extern "C" { +# define HB_WASM_END_DECLS } +# else /* !__cplusplus */ +# define HB_WASM_BEGIN_DECLS +# define HB_WASM_END_DECLS +# endif /* !__cplusplus */ +#endif + + +HB_WASM_BEGIN_DECLS + +#ifndef HB_WASM_API +#define HB_WASM_API(ret_t, name) ret_t name +#endif +#ifndef HB_WASM_API_COMPOUND /* compound return type */ +#define HB_WASM_API_COMPOUND(ret_t, name) HB_WASM_API(ret_t, name) +#endif +#ifndef HB_WASM_INTERFACE +#define HB_WASM_INTERFACE(ret_t, name) ret_t name +#endif +#ifndef HB_WASM_EXEC_ENV +#define HB_WASM_EXEC_ENV +#endif +#ifndef HB_WASM_EXEC_ENV_COMPOUND +#define HB_WASM_EXEC_ENV_COMPOUND HB_WASM_EXEC_ENV +#endif + + +#ifndef bool_t +#define bool_t uint32_t +#endif +#ifndef ptr_t +#define ptr_t(type_t) type_t * +#endif +#ifndef ptr_d +#define ptr_d(type_t, name) type_t *name +#endif + +typedef uint32_t codepoint_t; +typedef int32_t position_t; +typedef uint32_t mask_t; +typedef uint32_t tag_t; +#define TAG(c1,c2,c3,c4) ((tag_t)((((uint32_t)(c1)&0xFF)<<24)|(((uint32_t)(c2)&0xFF)<<16)|(((uint32_t)(c3)&0xFF)<<8)|((uint32_t)(c4)&0xFF))) + +typedef enum { + DIRECTION_INVALID = 0, + DIRECTION_LTR = 4, + DIRECTION_RTL, + DIRECTION_TTB, + DIRECTION_BTT +} direction_t; +#define DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) +#define DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) +#define DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) +#define DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) +#define DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) +#define DIRECTION_REVERSE(dir) ((direction_t) (((unsigned int) (dir)) ^ 1)) + +typedef tag_t script_t; /* ISO 15924 representation of Unicode scripts. */ + + +/* common */ + +HB_WASM_API (direction_t, script_get_horizontal_direction) (HB_WASM_EXEC_ENV + script_t script); + + +/* blob */ + +typedef struct +{ + uint32_t length; + ptr_t(char) data; +} blob_t; +#define BLOB_INIT {0, 0} + +HB_WASM_API (void, blob_free) (HB_WASM_EXEC_ENV + ptr_d(blob_t, blob)); + +/* buffer */ + +typedef struct +{ + uint32_t codepoint; + uint32_t mask; + uint32_t cluster; + uint32_t var1; + uint32_t var2; +} glyph_info_t; + +typedef struct +{ + position_t x_advance; + position_t y_advance; + position_t x_offset; + position_t y_offset; + uint32_t var; +} glyph_position_t; + +typedef struct +{ + uint32_t length; + ptr_t(glyph_info_t) info; + ptr_t(glyph_position_t) pos; +} buffer_contents_t; +#define BUFFER_CONTENTS_INIT {0, 0, 0} + +HB_WASM_API (bool_t, buffer_contents_realloc) (HB_WASM_EXEC_ENV + ptr_d(buffer_contents_t, contents), + uint32_t size); + +HB_WASM_API (void, buffer_contents_free) (HB_WASM_EXEC_ENV + ptr_d(buffer_contents_t, contents)); + +typedef struct buffer_t buffer_t; + +HB_WASM_API (bool_t, buffer_copy_contents) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer), + ptr_d(buffer_contents_t, contents)); + +HB_WASM_API (bool_t, buffer_set_contents) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer), + ptr_d(const buffer_contents_t, contents)); + +HB_WASM_API (direction_t, buffer_get_direction) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)); + +HB_WASM_API (script_t, buffer_get_script) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)); + +HB_WASM_API (void, buffer_reverse) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)); + +HB_WASM_API (void, buffer_reverse_clusters) (HB_WASM_EXEC_ENV + ptr_d(buffer_t, buffer)); + +/* face */ + +typedef struct face_t face_t; + +HB_WASM_API (ptr_t(face_t), face_create) (HB_WASM_EXEC_ENV + ptr_d(blob_t, blob), + unsigned int); + +HB_WASM_API (bool_t, face_copy_table) (HB_WASM_EXEC_ENV + ptr_d(face_t, face), + tag_t table_tag, + ptr_d(blob_t, blob)); + +HB_WASM_API (unsigned, face_get_upem) (HB_WASM_EXEC_ENV + ptr_d(face_t, face)); + +/* font */ + +typedef struct font_t font_t; + +HB_WASM_API (ptr_t(font_t), font_create) (HB_WASM_EXEC_ENV + ptr_d(face_t, face)); + +HB_WASM_API (ptr_t(face_t), font_get_face) (HB_WASM_EXEC_ENV + ptr_d(font_t, font)); + +HB_WASM_API (void, font_get_scale) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(int32_t, x_scale), + ptr_d(int32_t, y_scale)); + +HB_WASM_API (codepoint_t, font_get_glyph) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t unicode, + codepoint_t variation_selector); + +HB_WASM_API (position_t, font_get_glyph_h_advance) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph); + +HB_WASM_API (position_t, font_get_glyph_v_advance) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph); + +typedef struct +{ + position_t x_bearing; + position_t y_bearing; + position_t width; + position_t height; +} glyph_extents_t; + +HB_WASM_API (bool_t, font_get_glyph_extents) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + ptr_d(glyph_extents_t, extents)); + +HB_WASM_API (void, font_glyph_to_string) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + char *s, uint32_t size); + + +typedef struct +{ + unsigned int length; + ptr_t(int) coords; +} coords_t; + +HB_WASM_API (bool_t, font_copy_coords) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(coords_t, coords)); + +HB_WASM_API (bool_t, font_set_coords) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(coords_t, coords)); + +/* outline */ + +enum glyph_outline_point_type_t +{ + MOVE_TO, + LINE_TO, + QUADRATIC_TO, + CUBIC_TO, +}; + +typedef struct +{ + float x; + float y; + uint32_t type; +} glyph_outline_point_t; + +typedef struct +{ + uint32_t n_points; + ptr_t(glyph_outline_point_t) points; + uint32_t n_contours; + ptr_t(uint32_t) contours; +} glyph_outline_t; +#define GLYPH_OUTLINE_INIT {0, 0, 0, 0} + +HB_WASM_API (void, glyph_outline_free) (HB_WASM_EXEC_ENV + ptr_d(glyph_outline_t, outline)); + +HB_WASM_API (bool_t, font_copy_glyph_outline) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + codepoint_t glyph, + ptr_d(glyph_outline_t, outline)); + + +/* shape */ + +typedef struct +{ + tag_t tag; + uint32_t value; + uint32_t start; + uint32_t end; +} feature_t; +#define FEATURE_GLOBAL_START 0 +#define FEATURE_GLOBAL_END ((uint32_t) -1) + +HB_WASM_API (bool_t, shape_with) (HB_WASM_EXEC_ENV + ptr_d(font_t, font), + ptr_d(buffer_t, buffer), + ptr_d(const feature_t, features), + uint32_t num_features, + const char *shaper); + +/* Implement these in your shaper. */ + +HB_WASM_INTERFACE (ptr_t(void), shape_plan_create) (ptr_d(face_t, face)); + +HB_WASM_INTERFACE (bool_t, shape) (ptr_d(void, shape_plan), + ptr_d(font_t, font), + ptr_d(buffer_t, buffer), + ptr_d(const feature_t, features), + uint32_t num_features); + +HB_WASM_INTERFACE (void, shape_plan_destroy) (ptr_d(void, shape_plan)); + + +HB_WASM_END_DECLS + +#endif /* HB_WASM_API_H */ |