1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009, 2013 The FreeBSD Foundation 5 * 6 * This software was developed by Ed Schouten under sponsorship from the 7 * FreeBSD Foundation. 8 * 9 * Portions of this software were developed by Oleksandr Rybalko 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef _SYS_FONT_H_ 35 #define _SYS_FONT_H_ 36 37 #include <sys/queue.h> 38 39 /* 40 * Fonts. 41 * 42 * Fonts support normal and bold weights, and single and double width glyphs. 43 * Mapping tables are used to map Unicode points to glyphs. They are sorted by 44 * code point, and vtfont_lookup() uses this to perform a binary search. Each 45 * font has four mapping tables: two weights times two halves (left/single, 46 * right). When a character is not present in a bold map the glyph from the 47 * normal map is used. When no glyph is available, it uses glyph 0, which is 48 * normally equal to U+FFFD. 49 */ 50 51 enum vfnt_map_type { 52 VFNT_MAP_NORMAL = 0, /* Normal font. */ 53 VFNT_MAP_NORMAL_RIGHT, /* Normal font right hand. */ 54 VFNT_MAP_BOLD, /* Bold font. */ 55 VFNT_MAP_BOLD_RIGHT, /* Bold font right hand. */ 56 VFNT_MAPS /* Number of maps. */ 57 }; 58 59 struct font_info { 60 int32_t fi_checksum; 61 uint32_t fi_width; 62 uint32_t fi_height; 63 uint32_t fi_bitmap_size; 64 uint32_t fi_map_count[VFNT_MAPS]; 65 }; 66 67 struct vfnt_map { 68 uint32_t vfm_src; 69 uint16_t vfm_dst; 70 uint16_t vfm_len; 71 } __packed; 72 typedef struct vfnt_map vfnt_map_t; 73 74 struct vt_font { 75 vfnt_map_t *vf_map[VFNT_MAPS]; 76 uint8_t *vf_bytes; 77 uint32_t vf_height; 78 uint32_t vf_width; 79 uint32_t vf_map_count[VFNT_MAPS]; 80 uint32_t vf_refcount; 81 }; 82 83 typedef struct vt_font_bitmap_data { 84 uint32_t vfbd_width; 85 uint32_t vfbd_height; 86 uint32_t vfbd_compressed_size; 87 uint32_t vfbd_uncompressed_size; 88 uint8_t *vfbd_compressed_data; 89 struct vt_font *vfbd_font; 90 } vt_font_bitmap_data_t; 91 92 typedef enum { 93 FONT_AUTO, /* This font is loaded by software */ 94 FONT_MANUAL, /* This font is loaded manually by user */ 95 FONT_BUILTIN, /* This font was built in at compile time */ 96 FONT_RELOAD /* This font is marked to be re-read from file */ 97 } FONT_FLAGS; 98 99 struct fontlist { 100 char *font_name; 101 FONT_FLAGS font_flags; 102 vt_font_bitmap_data_t *font_data; 103 vt_font_bitmap_data_t *(*font_load)(char *); 104 STAILQ_ENTRY(fontlist) font_next; 105 }; 106 107 typedef STAILQ_HEAD(font_list, fontlist) font_list_t; 108 109 #define FONT_HEADER_MAGIC "VFNT0002" 110 struct font_header { 111 uint8_t fh_magic[8]; 112 uint8_t fh_width; 113 uint8_t fh_height; 114 uint16_t fh_pad; 115 uint32_t fh_glyph_count; 116 uint32_t fh_map_count[VFNT_MAPS]; 117 } __packed; 118 119 #endif /* !_SYS_FONT_H_ */ 120