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comparison font/font_face.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 fa8511a21d05
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-1:000000000000 0:223b71206888
1 /*
2 * Copyright (c) 2000, 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
28 #include <stdlib.h>
29 #include <stdio.h>
30 #include"font.h"
31 #include"font_peer.h"
32 #include <map>
33 #include <string>
34 #include <iostream>
35
36 namespace XKFont {
37
38 class Cache : public std::map<unsigned int, Glyph*> {
39 public:
40 Cache() {}
41 ~Cache() {
42 iterator it;
43 for (it = begin(); it != end(); it++)
44 delete (it->second);
45 }
46 };
47
48 Face::Face(const char *name_orig, int index, int hsize, int vsize)
49 {
50 cache = new Cache;
51
52 /* name: ';' 区切りで複数指定可能 */
53 char* name = new char[strlen(name_orig)+1];
54 while(*name_orig != 0) {
55 const char* next_name = strchr(name_orig, ';');
56 if (next_name) {
57 strncpy(name, name_orig, next_name - name_orig);
58 name[next_name-name_orig] = 0;
59 name_orig = next_name + 1;
60 } else {
61 strcpy(name, name_orig);
62 name_orig += strlen(name_orig);
63 }
64 if (strstr(name, "fn.dat")) {
65 peer.push_back(new PeerFn(name, index, hsize, vsize));
66 } else if (strstr(name, ".ttf") || strstr(name, ".ttc")) {
67 peer.push_back(new PeerFt2(name, index, hsize, vsize));
68 #if USE_X11
69 } else {
70 peer.push_back(new PeerX11(name, index, hsize, vsize));
71 #endif
72 }
73 }
74 return;
75 }
76
77 Face::~Face() {
78 delete cache;
79 }
80
81 Glyph*
82 Face::GlyphLoad(unsigned int code) {
83 if (cache->count(code))
84 return (*cache)[code];
85
86 Glyph* g = new Glyph;
87 iterator it;
88 for (it=peer.begin(); it != peer.end(); it++) {
89 if ( (*it)->GlyphCreate(code, g)) break;
90 }
91 if (it == peer.end()) {
92 fprintf(stderr,"Cannot find glyph, code %04x\n",code);
93 g->bitmap_left = 0;
94 g->bitmap_top = 0;
95 g->bitmap.width = 0;
96 g->bitmap.rows = 0;
97 g->bitmap.buffer = new unsigned char[1];
98 g->bitmap.buffer[0] = 0;
99 g->advance.x = 0;
100 g->advance.y = 0;
101 }
102 (*cache)[code] = g;
103 return g;
104 }
105
106 class FontImpl {
107 public:
108 std::map<int, Face*> cache;
109 std::string fontname;
110 int size;
111 ~FontImpl();
112 };
113
114 FontImpl::~FontImpl() {
115 std::map<int,Face*>::iterator it;
116 for (it=cache.begin(); it!=cache.end(); it++) delete it->second;
117 }
118
119 Font::Font(const char* name, int size) {
120 pimpl = new FontImpl;
121 pimpl->fontname = name;
122 pimpl->size = size;
123 vsize = size;
124 };
125 Font::~Font() {
126 delete pimpl;
127 }
128 Face*
129 Font::FaceLoad(double scale) {
130 std::map<int, Face*>& cache = pimpl->cache;
131 int size = int(scale * pimpl->size);
132 if (cache.find(size) != cache.end()) return cache[size];
133 try {
134 Face* face = new Face(pimpl->fontname.c_str(), 0, size, size);
135 cache[size] = face;
136 return face;
137 } catch(...) {
138 std::cerr << "Cannot create font face; font "<<pimpl->fontname<<", size "<<size<<std::endl;
139 /* 別の大きさを探す */
140 int i;
141 for (i=0; i<size; i++) {
142 if (cache.find(size-i) != cache.end()) return cache[size-i];
143 if (cache.find(size+i) != cache.end()) return cache[size+i];
144 try {
145 Face* face = new Face(pimpl->fontname.c_str(), 0, size-i, size-i);
146 cache[size-i] = face;
147 return face;
148 } catch(...) {};
149 try {
150 Face* face = new Face(pimpl->fontname.c_str(), 0, size+i, size+i);
151 cache[size+i] = face;
152 return face;
153 } catch(...) {};
154 }
155 /* 見つからない */
156 throw;
157 }
158 }
159
160 } /* namespace XKFont */