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24330d27 | 1 | /* |
4bd4418a | 2 | * $RCSId: $ |
24330d27 | 3 | * |
46b51147 | 4 | * Copyright © 2000 Keith Packard |
24330d27 KP |
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 | ||
24330d27 | 25 | #include "fcint.h" |
f045376c | 26 | #include <stdlib.h> |
24330d27 KP |
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 | } | |
cd2ec1a9 | 83 | |
4262e0b3 PL |
84 | static int * fcfs_pat_count; |
85 | ||
86 | void | |
87 | FcFontSetNewBank (void) | |
cd2ec1a9 | 88 | { |
4262e0b3 | 89 | FcPatternNewBank(); |
4262e0b3 PL |
90 | } |
91 | ||
92 | int | |
93 | FcFontSetNeededBytes (FcFontSet *s) | |
94 | { | |
95 | int i, c, cum = 0; | |
cd2ec1a9 PL |
96 | |
97 | for (i = 0; i < s->nfont; i++) | |
4262e0b3 PL |
98 | { |
99 | c = FcPatternNeededBytes(s->fonts[i]); | |
100 | if (c < 0) | |
101 | return c; | |
102 | cum += c; | |
103 | } | |
cd2ec1a9 | 104 | |
4262e0b3 | 105 | if (cum > 0) |
7f37423d | 106 | return cum + sizeof(int) + FcObjectNeededBytes(); |
4262e0b3 PL |
107 | else |
108 | return 0; | |
109 | } | |
110 | ||
7fd7221e PL |
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 | { | |
44415a07 | 116 | return fc_alignof (int) + |
7fd7221e PL |
117 | FcPatternNeededBytesAlign () + FcObjectNeededBytesAlign (); |
118 | } | |
119 | ||
4262e0b3 PL |
120 | void * |
121 | FcFontSetDistributeBytes (FcCache * metadata, void * block_ptr) | |
122 | { | |
7fd7221e | 123 | block_ptr = ALIGN (block_ptr, int); |
4262e0b3 PL |
124 | fcfs_pat_count = (int *)block_ptr; |
125 | block_ptr = (int *)block_ptr + 1; | |
bb6b1993 PL |
126 | /* we don't consume any bytes for the fontset itself, */ |
127 | /* since we don't allocate it statically. */ | |
4262e0b3 PL |
128 | block_ptr = FcPatternDistributeBytes (metadata, block_ptr); |
129 | ||
bb6b1993 PL |
130 | /* for good measure, write out the object ids used for */ |
131 | /* this bank to the file. */ | |
4262e0b3 | 132 | return FcObjectDistributeBytes (metadata, block_ptr); |
cd2ec1a9 PL |
133 | } |
134 | ||
135 | FcBool | |
4262e0b3 | 136 | FcFontSetSerialize (int bank, FcFontSet * s) |
cd2ec1a9 PL |
137 | { |
138 | int i; | |
139 | FcPattern * p; | |
4262e0b3 | 140 | *fcfs_pat_count = s->nfont; |
cd2ec1a9 PL |
141 | |
142 | for (i = 0; i < s->nfont; i++) | |
143 | { | |
4262e0b3 | 144 | p = FcPatternSerialize (bank, s->fonts[i]); |
cd2ec1a9 | 145 | if (!p) return FcFalse; |
cd2ec1a9 | 146 | } |
7f37423d | 147 | FcObjectSerialize(); |
cd2ec1a9 PL |
148 | |
149 | return FcTrue; | |
150 | } | |
151 | ||
212c9f43 | 152 | FcBool |
61571f3f | 153 | FcFontSetUnserialize(FcCache * metadata, FcFontSet * s, void * block_ptr) |
212c9f43 | 154 | { |
4262e0b3 PL |
155 | int nfont; |
156 | int i, n; | |
212c9f43 | 157 | |
1c5b6345 | 158 | block_ptr = ALIGN (block_ptr, int); |
4262e0b3 PL |
159 | nfont = *(int *)block_ptr; |
160 | block_ptr = (int *)block_ptr + 1; | |
212c9f43 | 161 | |
86e75dfb PL |
162 | /* comparing nfont and metadata.count is a bit like comparing |
163 | apples and oranges. Its just for rejecting totally insane | |
164 | nfont values, and for that its good enough */ | |
165 | if (nfont > 0 && nfont < metadata->count / sizeof(void*)) | |
212c9f43 | 166 | { |
7f37423d | 167 | FcPattern * p = (FcPattern *)block_ptr; |
1c5b6345 | 168 | |
a8e4d9eb PL |
169 | if (s->sfont < s->nfont + nfont) |
170 | { | |
171 | int sfont = s->nfont + nfont; | |
172 | FcPattern ** pp; | |
173 | pp = realloc (s->fonts, sfont * sizeof (FcPattern)); | |
174 | if (!pp) | |
175 | return FcFalse; | |
176 | s->fonts = pp; | |
177 | s->sfont = sfont; | |
178 | } | |
179 | n = s->nfont; | |
180 | s->nfont += nfont; | |
181 | ||
1c5b6345 PL |
182 | /* The following line is a bit counterintuitive. The usual |
183 | * convention is that FcPatternUnserialize is responsible for | |
184 | * aligning the FcPattern. However, the FontSet also stores | |
185 | * the FcPatterns in its own array, so we need to align here | |
186 | * too. */ | |
187 | p = ALIGN(p, FcPattern); | |
4262e0b3 PL |
188 | for (i = 0; i < nfont; i++) |
189 | s->fonts[n + i] = p+i; | |
7f37423d | 190 | |
1c5b6345 | 191 | block_ptr = FcPatternUnserialize (metadata, block_ptr); |
7f37423d | 192 | block_ptr = FcObjectUnserialize (metadata, block_ptr); |
a8e4d9eb | 193 | return block_ptr != 0; |
212c9f43 | 194 | } |
212c9f43 | 195 | |
a8e4d9eb | 196 | return FcFalse; |
212c9f43 | 197 | } |