| /* |
| * Copyright © 2019-2020 Ebrahim Byagowi |
| * |
| * 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. |
| */ |
| |
| #if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) |
| #error "Include <hb.h> instead." |
| #endif |
| |
| #ifndef HB_DRAW_H |
| #define HB_DRAW_H |
| |
| #include "hb.h" |
| |
| HB_BEGIN_DECLS |
| |
| #ifdef HB_EXPERIMENTAL_API |
| typedef void (*hb_draw_move_to_func_t) (hb_position_t to_x, hb_position_t to_y, void *user_data); |
| typedef void (*hb_draw_line_to_func_t) (hb_position_t to_x, hb_position_t to_y, void *user_data); |
| typedef void (*hb_draw_quadratic_to_func_t) (hb_position_t control_x, hb_position_t control_y, |
| hb_position_t to_x, hb_position_t to_y, |
| void *user_data); |
| typedef void (*hb_draw_cubic_to_func_t) (hb_position_t control1_x, hb_position_t control1_y, |
| hb_position_t control2_x, hb_position_t control2_y, |
| hb_position_t to_x, hb_position_t to_y, |
| void *user_data); |
| typedef void (*hb_draw_close_path_func_t) (void *user_data); |
| |
| /** |
| * hb_draw_funcs_t: |
| * |
| * Glyph draw callbacks. |
| * |
| * _move_to, _line_to and _cubic_to calls are nessecary to be defined but we |
| * translate _quadratic_to calls to _cubic_to if the callback isn't defined. |
| * |
| * Since: EXPERIMENTAL |
| **/ |
| typedef struct hb_draw_funcs_t hb_draw_funcs_t; |
| |
| HB_EXTERN void |
| hb_draw_funcs_set_move_to_func (hb_draw_funcs_t *funcs, |
| hb_draw_move_to_func_t move_to); |
| |
| HB_EXTERN void |
| hb_draw_funcs_set_line_to_func (hb_draw_funcs_t *funcs, |
| hb_draw_line_to_func_t line_to); |
| |
| HB_EXTERN void |
| hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t *funcs, |
| hb_draw_quadratic_to_func_t quadratic_to); |
| |
| HB_EXTERN void |
| hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t *funcs, |
| hb_draw_cubic_to_func_t cubic_to); |
| |
| HB_EXTERN void |
| hb_draw_funcs_set_close_path_func (hb_draw_funcs_t *funcs, |
| hb_draw_close_path_func_t close_path); |
| |
| HB_EXTERN hb_draw_funcs_t * |
| hb_draw_funcs_create (void); |
| |
| HB_EXTERN hb_draw_funcs_t * |
| hb_draw_funcs_reference (hb_draw_funcs_t *funcs); |
| |
| HB_EXTERN void |
| hb_draw_funcs_destroy (hb_draw_funcs_t *funcs); |
| |
| HB_EXTERN void |
| hb_draw_funcs_make_immutable (hb_draw_funcs_t *funcs); |
| |
| HB_EXTERN hb_bool_t |
| hb_draw_funcs_is_immutable (hb_draw_funcs_t *funcs); |
| #endif |
| |
| HB_END_DECLS |
| |
| #endif /* HB_DRAW_H */ |