1 /*
2 * FTGL - OpenGL font library
3 *
4 * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26 #include "config.h"
27
28 #include "FTGL/FTLibrary.h"
29 #include "FTCleanup.h"
30 #include <stdexcept>
31
Instance()32 FTLibrary& FTLibrary::Instance()
33 {
34 static FTLibrary ftlib;
35 return ftlib;
36 }
37
38
~FTLibrary()39 FTLibrary::~FTLibrary()
40 {
41 FTCleanup::Instance()->DestroyAll();
42
43 if(library != 0)
44 {
45 FT_Done_FreeType(*library);
46
47 delete library;
48 library= 0;
49 }
50 }
51
52
FTLibrary()53 FTLibrary::FTLibrary()
54 : library(0),
55 err(0),
56 LegacyOpenGLStateHandling(-1)
57 {
58 Initialise();
59 }
60
61
Initialise()62 bool FTLibrary::Initialise()
63 {
64 if(library != 0)
65 return true;
66
67 library = new FT_Library;
68
69 err = FT_Init_FreeType(library);
70 if(err)
71 {
72 delete library;
73 library = 0;
74 return false;
75 }
76
77 FTCleanup::Instance();
78
79 return true;
80 }
81
82
LegacyOpenGLState(bool On)83 void FTLibrary::LegacyOpenGLState(bool On)
84 {
85 int Old = LegacyOpenGLStateHandling.exchange(On);
86 if (Old >= 0 && Old != On)
87 throw std::logic_error
88 ("FTGL: inconsistent LegacyOpenGLState setting, see README-LegacyOpenGLState");
89 }
90