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1 | /* | |
2 | * $RCSId: $ | |
3 | * | |
4 | * Copyright © 2000 Keith Packard | |
5 | * | |
6 | * Permission to use, copy, modify, distribute, and sell this software and its | |
7 | * documentation for any purpose is hereby granted without fee, provided that | |
8 | * the above copyright notice appear in all copies and that both that | |
9 | * copyright notice and this permission notice appear in supporting | |
10 | * documentation, and that the name of Keith Packard not be used in | |
11 | * advertising or publicity pertaining to distribution of the software without | |
12 | * specific, written prior permission. Keith Packard makes no | |
13 | * representations about the suitability of this software for any purpose. It | |
14 | * is provided "as is" without express or implied warranty. | |
15 | * | |
16 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
17 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
18 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
19 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
20 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
21 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
22 | * PERFORMANCE OF THIS SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include <stdlib.h> | |
26 | #include "fcint.h" | |
27 | ||
28 | FcFontSet * | |
29 | FcFontSetCreate (void) | |
30 | { | |
31 | FcFontSet *s; | |
32 | ||
33 | s = (FcFontSet *) malloc (sizeof (FcFontSet)); | |
34 | if (!s) | |
35 | return 0; | |
36 | FcMemAlloc (FC_MEM_FONTSET, sizeof (FcFontSet)); | |
37 | s->nfont = 0; | |
38 | s->sfont = 0; | |
39 | s->fonts = 0; | |
40 | return s; | |
41 | } | |
42 | ||
43 | void | |
44 | FcFontSetDestroy (FcFontSet *s) | |
45 | { | |
46 | int i; | |
47 | ||
48 | for (i = 0; i < s->nfont; i++) | |
49 | FcPatternDestroy (s->fonts[i]); | |
50 | if (s->fonts) | |
51 | { | |
52 | FcMemFree (FC_MEM_FONTPTR, s->sfont * sizeof (FcPattern *)); | |
53 | free (s->fonts); | |
54 | } | |
55 | FcMemFree (FC_MEM_FONTSET, sizeof (FcFontSet)); | |
56 | free (s); | |
57 | } | |
58 | ||
59 | FcBool | |
60 | FcFontSetAdd (FcFontSet *s, FcPattern *font) | |
61 | { | |
62 | FcPattern **f; | |
63 | int sfont; | |
64 | ||
65 | if (s->nfont == s->sfont) | |
66 | { | |
67 | sfont = s->sfont + 32; | |
68 | if (s->fonts) | |
69 | f = (FcPattern **) realloc (s->fonts, sfont * sizeof (FcPattern *)); | |
70 | else | |
71 | f = (FcPattern **) malloc (sfont * sizeof (FcPattern *)); | |
72 | if (!f) | |
73 | return FcFalse; | |
74 | if (s->sfont) | |
75 | FcMemFree (FC_MEM_FONTPTR, s->sfont * sizeof (FcPattern *)); | |
76 | FcMemAlloc (FC_MEM_FONTPTR, sfont * sizeof (FcPattern *)); | |
77 | s->sfont = sfont; | |
78 | s->fonts = f; | |
79 | } | |
80 | s->fonts[s->nfont++] = font; | |
81 | return FcTrue; | |
82 | } | |
83 | ||
84 | static int * fcfs_pat_count; | |
85 | ||
86 | void | |
87 | FcFontSetNewBank (void) | |
88 | { | |
89 | FcPatternNewBank(); | |
90 | } | |
91 | ||
92 | int | |
93 | FcFontSetNeededBytes (FcFontSet *s) | |
94 | { | |
95 | int i, c, cum = 0; | |
96 | ||
97 | for (i = 0; i < s->nfont; i++) | |
98 | { | |
99 | c = FcPatternNeededBytes(s->fonts[i]); | |
100 | if (c < 0) | |
101 | return c; | |
102 | cum += c; | |
103 | } | |
104 | ||
105 | if (cum > 0) | |
106 | return cum + sizeof(int) + FcObjectNeededBytes(); | |
107 | else | |
108 | return 0; | |
109 | } | |
110 | ||
111 | /* Returns an overestimate of the number of bytes that | |
112 | * might later get eaten up by padding in the ALIGN macro. */ | |
113 | int | |
114 | FcFontSetNeededBytesAlign (void) | |
115 | { | |
116 | return __alignof__(int) + | |
117 | FcPatternNeededBytesAlign () + FcObjectNeededBytesAlign (); | |
118 | } | |
119 | ||
120 | void * | |
121 | FcFontSetDistributeBytes (FcCache * metadata, void * block_ptr) | |
122 | { | |
123 | block_ptr = ALIGN (block_ptr, int); | |
124 | fcfs_pat_count = (int *)block_ptr; | |
125 | block_ptr = (int *)block_ptr + 1; | |
126 | // we don't consume any bytes for the fontset itself, | |
127 | // since we don't allocate it statically. | |
128 | block_ptr = FcPatternDistributeBytes (metadata, block_ptr); | |
129 | ||
130 | // for good measure, write out the object ids used for | |
131 | // this bank to the file. | |
132 | return FcObjectDistributeBytes (metadata, block_ptr); | |
133 | } | |
134 | ||
135 | FcBool | |
136 | FcFontSetSerialize (int bank, FcFontSet * s) | |
137 | { | |
138 | int i; | |
139 | FcPattern * p; | |
140 | *fcfs_pat_count = s->nfont; | |
141 | ||
142 | for (i = 0; i < s->nfont; i++) | |
143 | { | |
144 | p = FcPatternSerialize (bank, s->fonts[i]); | |
145 | if (!p) return FcFalse; | |
146 | } | |
147 | FcObjectSerialize(); | |
148 | ||
149 | return FcTrue; | |
150 | } | |
151 | ||
152 | FcBool | |
153 | FcFontSetUnserialize(FcCache * metadata, FcFontSet * s, void * block_ptr) | |
154 | { | |
155 | int nfont; | |
156 | int i, n; | |
157 | ||
158 | block_ptr = ALIGN (block_ptr, int); | |
159 | nfont = *(int *)block_ptr; | |
160 | block_ptr = (int *)block_ptr + 1; | |
161 | ||
162 | if (s->sfont < s->nfont + nfont) | |
163 | { | |
164 | int sfont = s->nfont + nfont; | |
165 | FcPattern ** pp; | |
166 | pp = realloc (s->fonts, sfont * sizeof (FcPattern)); | |
167 | if (!pp) | |
168 | return FcFalse; | |
169 | s->fonts = pp; | |
170 | s->sfont = sfont; | |
171 | } | |
172 | n = s->nfont; | |
173 | s->nfont += nfont; | |
174 | ||
175 | if (nfont > 0) | |
176 | { | |
177 | FcPattern * p = (FcPattern *)block_ptr; | |
178 | ||
179 | /* The following line is a bit counterintuitive. The usual | |
180 | * convention is that FcPatternUnserialize is responsible for | |
181 | * aligning the FcPattern. However, the FontSet also stores | |
182 | * the FcPatterns in its own array, so we need to align here | |
183 | * too. */ | |
184 | p = ALIGN(p, FcPattern); | |
185 | for (i = 0; i < nfont; i++) | |
186 | s->fonts[n + i] = p+i; | |
187 | ||
188 | block_ptr = FcPatternUnserialize (metadata, block_ptr); | |
189 | block_ptr = FcObjectUnserialize (metadata, block_ptr); | |
190 | } | |
191 | ||
192 | return block_ptr != 0; | |
193 | } |