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comparison font/font_peer_fn.cc @ 0:223b71206888

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Initial import
author thib
date Fri, 01 Aug 2008 16:32:45 +0000
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children 15a18fbe6f21
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-1:000000000000 0:223b71206888
1 /*
2 * Copyright (c) 2001 Yuki Sawada
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * This code uses some parts of AVG32 for Macintosh by Kenjo.
28 */
29
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <stdexcept>
33 #include <string>
34
35 using namespace std;
36
37 #include "font.h"
38 #include "font_peer.h"
39
40 namespace XKFont {
41
42 #define FN_DAT_SIZE 2544768
43
44 PeerFn::PeerFn(const char *name, int index, int hsize, int vsize) : buffer(0)
45 {
46 FILE *fp = 0;
47
48 buffer = new unsigned char[FN_DAT_SIZE];
49 fp = fopen(name, "rb");
50 if (!fp) {
51 delete[] buffer;
52 buffer = 0;
53 string err = string("XKFont::PeerFn::PeerFn : Cannot open font file ")+name;
54 throw std::invalid_argument(err);
55 }
56 fread(buffer, 1, FN_DAT_SIZE, fp);
57 fclose(fp);
58
59 return;
60 }
61
62
63 PeerFn::~PeerFn() {
64 delete[] buffer;
65 }
66
67 static unsigned int
68 font_glyph_fn_codeconv_euc_to_jis(unsigned int euc)
69 {
70 unsigned int h, l;
71
72 h = (euc >> 8) & 0xff;
73 l = euc & 0xff;
74
75 if (h < 0x81) {
76 l = h;
77 h = 0;
78 } else if (l == 0x8e)
79 h = 0;
80 else {
81 h -= 0x80;
82 l -= 0x80;
83 }
84
85 return (h << 8) | l;
86 }
87
88 bool
89 PeerFn::GlyphCreate(unsigned int code, Glyph* glyph)
90 {
91 unsigned char *p1, *p2;
92 unsigned int h, l, offset;
93 int x, y;
94
95 l = font_glyph_fn_codeconv_euc_to_jis(code);
96 l -= 0x2121;
97 h = l >> 8;
98 l &= 0xff;
99 offset = (h * 0x5e + l) * 12 * 24;
100 if (offset > FN_DAT_SIZE - 12 * 24)
101 offset = 0;
102
103 glyph->bitmap_left = 0;
104 glyph->bitmap_top = 21;
105 glyph->bitmap.width = 24;
106 glyph->bitmap.rows = 24;
107
108 #if 0
109 glyph->metrics.ascender = private->vsize - 4;
110 glyph->metrics.descender = -4;
111 #endif
112 glyph->advance.x = 24 + 1;
113 glyph->advance.y = 24 + 1;
114
115 glyph->bitmap.buffer = new unsigned char[24*24];
116
117 p1 = glyph->bitmap.buffer;
118 p2 = buffer + offset;
119 for (y = 0; y < 24; y++) {
120 for (x = 0; x < 12; x++) {
121 unsigned char c = ~*p2++;
122 unsigned char c1;
123 c1 = (c) & 0x0f; *p1++ = (c1<<4) | c1;
124 c1 = (c>>4)& 0x0f; *p1++ = (c1<<4) | c1;
125 }
126 }
127 return true;
128 }
129
130 } /* end of namespace XKFont */