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