bindbc.hb.bind.ot.var source code

1 
2 //          Copyright Ahmet Sait Koçak 2020.
3 // Distributed under the Boost Software License, Version 1.0.
4 //    (See accompanying file LICENSE_1_0.txt or copy at
5 //          https://www.boost.org/LICENSE_1_0.txt)
6 
7 module bindbc.hb.bind.ot.var;
8 
9 import bindbc.hb.config;
10 
11 import bindbc.hb.bind.common;
12 import bindbc.hb.bind.face;
13 import bindbc.hb.bind.ot.name;
14 
15 extern(C) @nogc nothrow:
16 
17 enum HB_OT_TAG_VAR_AXIS_ITALIC = HB_TAG('i', 't', 'a', 'l');
18 enum HB_OT_TAG_VAR_AXIS_OPTICAL_SIZE = HB_TAG('o', 'p', 's', 'z');
19 enum HB_OT_TAG_VAR_AXIS_SLANT = HB_TAG('s', 'l', 'n', 't');
20 enum HB_OT_TAG_VAR_AXIS_WIDTH = HB_TAG('w', 'd', 't', 'h');
21 enum HB_OT_TAG_VAR_AXIS_WEIGHT = HB_TAG('w', 'g', 'h', 't');
22 
23 /*
24  * fvar / avar
25  */
26 
27 version(BindHB_Static)
28     hb_bool_t hb_ot_var_has_data (hb_face_t* face);
29 else
30 {
31     private alias fp_hb_ot_var_has_data = hb_bool_t function (hb_face_t* face);
32     __gshared fp_hb_ot_var_has_data hb_ot_var_has_data;
33 }
34 
35 /*
36  * Variation axes.
37  */
38 
39 version(BindHB_Static)
40     uint hb_ot_var_get_axis_count (hb_face_t* face);
41 else
42 {
43     private alias fp_hb_ot_var_get_axis_count = uint function (hb_face_t* face);
44     __gshared fp_hb_ot_var_get_axis_count hb_ot_var_get_axis_count;
45 }
46 
47 static if (hbSupport >= HBSupport.v2_6_3)
48 {
49 	/**
50 	 * hb_ot_var_axis_flags_t:
51 	 * @HB_OT_VAR_AXIS_FLAG_HIDDEN: The axis should not be exposed directly in user interfaces.
52 	 *
53 	 * Since: 2.2.0
54 	 */
55 	enum : hb_tag_t
56 	{
57 		/*< flags >*/
58 		HB_OT_VAR_AXIS_FLAG_HIDDEN = 0x00000001u,
59 
60 		_HB_OT_VAR_AXIS_FLAG_MAX_VALUE = HB_TAG_MAX_SIGNED /*< skip >*/
61 	}
62 	alias hb_ot_var_axis_flags_t = hb_tag_t;
63 
64 	/**
65 	 * hb_ot_var_axis_info_t:
66 	 *
67 	 * Since: 2.2.0
68 	 */
69 	struct hb_ot_var_axis_info_t
70 	{
71 		uint axis_index;
72 		hb_tag_t tag;
73 		hb_ot_name_id_t name_id;
74 		hb_ot_var_axis_flags_t flags;
75 		float min_value;
76 		float default_value;
77 		float max_value;
78 		/*< private >*/
79 		uint reserved;
80 	}
81 
82 	/* IN/OUT */
83 	/* OUT */
84 	version(BindHB_Static)
85 		uint hb_ot_var_get_axis_infos (
86 			hb_face_t* face,
87 			uint start_offset,
88 			uint* axes_count,
89 			hb_ot_var_axis_info_t* axes_array);
90 	else
91 	{
92 		private alias fp_hb_ot_var_get_axis_infos = uint function (
93 			hb_face_t* face,
94 			uint start_offset,
95 			uint* axes_count,
96 			hb_ot_var_axis_info_t* axes_array);
97 		__gshared fp_hb_ot_var_get_axis_infos hb_ot_var_get_axis_infos;
98 	}
99 
100 	version(BindHB_Static)
101 		hb_bool_t hb_ot_var_find_axis_info (
102 			hb_face_t* face,
103 			hb_tag_t axis_tag,
104 			hb_ot_var_axis_info_t* axis_info);
105 	else
106 	{
107 		private alias fp_hb_ot_var_find_axis_info = hb_bool_t function (
108 			hb_face_t* face,
109 			hb_tag_t axis_tag,
110 			hb_ot_var_axis_info_t* axis_info);
111 		__gshared fp_hb_ot_var_find_axis_info hb_ot_var_find_axis_info;
112 	}
113 
114 	/*
115 	 * Named instances.
116 	 */
117 
118 	version(BindHB_Static)
119 		uint hb_ot_var_get_named_instance_count (hb_face_t* face);
120 	else
121 	{
122 		private alias fp_hb_ot_var_get_named_instance_count = uint function (hb_face_t* face);
123 		__gshared fp_hb_ot_var_get_named_instance_count hb_ot_var_get_named_instance_count;
124 	}
125 
126 	version(BindHB_Static)
127 		hb_ot_name_id_t hb_ot_var_named_instance_get_subfamily_name_id (
128 			hb_face_t* face,
129 			uint instance_index);
130 	else
131 	{
132 		private alias fp_hb_ot_var_named_instance_get_subfamily_name_id = hb_ot_name_id_t function (
133 			hb_face_t* face,
134 			uint instance_index);
135 		__gshared fp_hb_ot_var_named_instance_get_subfamily_name_id hb_ot_var_named_instance_get_subfamily_name_id;
136 	}
137 
138 	version(BindHB_Static)
139 		hb_ot_name_id_t hb_ot_var_named_instance_get_postscript_name_id (
140 			hb_face_t* face,
141 			uint instance_index);
142 	else
143 	{
144 		private alias fp_hb_ot_var_named_instance_get_postscript_name_id = hb_ot_name_id_t function (
145 			hb_face_t* face,
146 			uint instance_index);
147 		__gshared fp_hb_ot_var_named_instance_get_postscript_name_id hb_ot_var_named_instance_get_postscript_name_id;
148 	}
149 
150 	/* IN/OUT */
151 	/* OUT */
152 	version(BindHB_Static)
153 		uint hb_ot_var_named_instance_get_design_coords (
154 			hb_face_t* face,
155 			uint instance_index,
156 			uint* coords_length,
157 			float* coords);
158 	else
159 	{
160 		private alias fp_hb_ot_var_named_instance_get_design_coords = uint function (
161 			hb_face_t* face,
162 			uint instance_index,
163 			uint* coords_length,
164 			float* coords);
165 		__gshared fp_hb_ot_var_named_instance_get_design_coords hb_ot_var_named_instance_get_design_coords;
166 	}
167 }
168 
169 /*
170  * Conversions.
171  */
172 
173 /* IN */
174 
175 /* OUT */
176 version(BindHB_Static)
177     void hb_ot_var_normalize_variations (
178         hb_face_t* face,
179         const(hb_variation_t)* variations,
180         uint variations_length,
181         int* coords,
182         uint coords_length);
183 else
184 {
185     private alias fp_hb_ot_var_normalize_variations = void function (
186         hb_face_t* face,
187         const(hb_variation_t)* variations,
188         uint variations_length,
189         int* coords,
190         uint coords_length);
191     __gshared fp_hb_ot_var_normalize_variations hb_ot_var_normalize_variations;
192 }
193 
194 /* IN */
195 /* OUT */
196 version(BindHB_Static)
197     void hb_ot_var_normalize_coords (
198         hb_face_t* face,
199         uint coords_length,
200         const(float)* design_coords,
201         int* normalized_coords);
202 else
203 {
204     private alias fp_hb_ot_var_normalize_coords = void function (
205         hb_face_t* face,
206         uint coords_length,
207         const(float)* design_coords,
208         int* normalized_coords);
209     __gshared fp_hb_ot_var_normalize_coords hb_ot_var_normalize_coords;
210 }