jpayne@69: /*
jpayne@69:  * Copyright © 2019-2020  Ebrahim Byagowi
jpayne@69:  *
jpayne@69:  *  This is part of HarfBuzz, a text shaping library.
jpayne@69:  *
jpayne@69:  * Permission is hereby granted, without written agreement and without
jpayne@69:  * license or royalty fees, to use, copy, modify, and distribute this
jpayne@69:  * software and its documentation for any purpose, provided that the
jpayne@69:  * above copyright notice and the following two paragraphs appear in
jpayne@69:  * all copies of this software.
jpayne@69:  *
jpayne@69:  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
jpayne@69:  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
jpayne@69:  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
jpayne@69:  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
jpayne@69:  * DAMAGE.
jpayne@69:  *
jpayne@69:  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
jpayne@69:  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
jpayne@69:  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
jpayne@69:  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
jpayne@69:  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
jpayne@69:  */
jpayne@69: 
jpayne@69: #ifndef HB_H_IN
jpayne@69: #error "Include <hb.h> instead."
jpayne@69: #endif
jpayne@69: 
jpayne@69: #ifndef HB_DRAW_H
jpayne@69: #define HB_DRAW_H
jpayne@69: 
jpayne@69: #include "hb.h"
jpayne@69: 
jpayne@69: HB_BEGIN_DECLS
jpayne@69: 
jpayne@69: #ifdef HB_EXPERIMENTAL_API
jpayne@69: typedef void (*hb_draw_move_to_func_t) (hb_position_t to_x, hb_position_t to_y, void *user_data);
jpayne@69: typedef void (*hb_draw_line_to_func_t) (hb_position_t to_x, hb_position_t to_y, void *user_data);
jpayne@69: typedef void (*hb_draw_quadratic_to_func_t) (hb_position_t control_x, hb_position_t control_y,
jpayne@69: 					     hb_position_t to_x, hb_position_t to_y,
jpayne@69: 					     void *user_data);
jpayne@69: typedef void (*hb_draw_cubic_to_func_t) (hb_position_t control1_x, hb_position_t control1_y,
jpayne@69: 					 hb_position_t control2_x, hb_position_t control2_y,
jpayne@69: 					 hb_position_t to_x, hb_position_t to_y,
jpayne@69: 					 void *user_data);
jpayne@69: typedef void (*hb_draw_close_path_func_t) (void *user_data);
jpayne@69: 
jpayne@69: /**
jpayne@69:  * hb_draw_funcs_t:
jpayne@69:  *
jpayne@69:  * Glyph draw callbacks.
jpayne@69:  *
jpayne@69:  * _move_to, _line_to and _cubic_to calls are nessecary to be defined but we
jpayne@69:  * translate _quadratic_to calls to _cubic_to if the callback isn't defined.
jpayne@69:  *
jpayne@69:  * Since: EXPERIMENTAL
jpayne@69:  **/
jpayne@69: typedef struct hb_draw_funcs_t hb_draw_funcs_t;
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_set_move_to_func (hb_draw_funcs_t        *funcs,
jpayne@69: 				hb_draw_move_to_func_t  move_to);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_set_line_to_func (hb_draw_funcs_t        *funcs,
jpayne@69: 				hb_draw_line_to_func_t  line_to);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_set_quadratic_to_func (hb_draw_funcs_t             *funcs,
jpayne@69: 				     hb_draw_quadratic_to_func_t  quadratic_to);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_set_cubic_to_func (hb_draw_funcs_t         *funcs,
jpayne@69: 				 hb_draw_cubic_to_func_t  cubic_to);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_set_close_path_func (hb_draw_funcs_t           *funcs,
jpayne@69: 				   hb_draw_close_path_func_t  close_path);
jpayne@69: 
jpayne@69: HB_EXTERN hb_draw_funcs_t *
jpayne@69: hb_draw_funcs_create (void);
jpayne@69: 
jpayne@69: HB_EXTERN hb_draw_funcs_t *
jpayne@69: hb_draw_funcs_reference (hb_draw_funcs_t *funcs);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_destroy (hb_draw_funcs_t *funcs);
jpayne@69: 
jpayne@69: HB_EXTERN void
jpayne@69: hb_draw_funcs_make_immutable (hb_draw_funcs_t *funcs);
jpayne@69: 
jpayne@69: HB_EXTERN hb_bool_t
jpayne@69: hb_draw_funcs_is_immutable (hb_draw_funcs_t *funcs);
jpayne@69: #endif
jpayne@69: 
jpayne@69: HB_END_DECLS
jpayne@69: 
jpayne@69: #endif /* HB_DRAW_H */