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/*
* $RCSId: $
*
* Copyright © 2000 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include "fcint.h"
FcFontSet *
FcFontSetCreate (void)
{
FcFontSet *s;
s = (FcFontSet *) malloc (sizeof (FcFontSet));
if (!s)
return 0;
FcMemAlloc (FC_MEM_FONTSET, sizeof (FcFontSet));
s->nfont = 0;
s->sfont = 0;
s->fonts = 0;
return s;
}
void
FcFontSetDestroy (FcFontSet *s)
{
int i;
for (i = 0; i < s->nfont; i++)
FcPatternDestroy (s->fonts[i]);
if (s->fonts)
{
FcMemFree (FC_MEM_FONTPTR, s->sfont * sizeof (FcPattern *));
free (s->fonts);
}
FcMemFree (FC_MEM_FONTSET, sizeof (FcFontSet));
free (s);
}
FcBool
FcFontSetAdd (FcFontSet *s, FcPattern *font)
{
FcPattern **f;
int sfont;
if (s->nfont == s->sfont)
{
sfont = s->sfont + 32;
if (s->fonts)
f = (FcPattern **) realloc (s->fonts, sfont * sizeof (FcPattern *));
else
f = (FcPattern **) malloc (sfont * sizeof (FcPattern *));
if (!f)
return FcFalse;
if (s->sfont)
FcMemFree (FC_MEM_FONTPTR, s->sfont * sizeof (FcPattern *));
FcMemAlloc (FC_MEM_FONTPTR, sfont * sizeof (FcPattern *));
s->sfont = sfont;
s->fonts = f;
}
s->fonts[s->nfont++] = font;
return FcTrue;
}
static int * fcfs_pat_count;
void
FcFontSetNewBank (void)
{
FcPatternNewBank();
}
int
FcFontSetNeededBytes (FcFontSet *s)
{
int i, c, cum = 0;
for (i = 0; i < s->nfont; i++)
{
c = FcPatternNeededBytes(s->fonts[i]);
if (c < 0)
return c;
cum += c;
}
if (cum > 0)
return cum + sizeof(int) + FcObjectNeededBytes();
else
return 0;
}
/* Returns an overestimate of the number of bytes that
* might later get eaten up by padding in the ALIGN macro. */
int
FcFontSetNeededBytesAlign (void)
{
return __alignof__(int) +
FcPatternNeededBytesAlign () + FcObjectNeededBytesAlign ();
}
void *
FcFontSetDistributeBytes (FcCache * metadata, void * block_ptr)
{
block_ptr = ALIGN (block_ptr, int);
fcfs_pat_count = (int *)block_ptr;
block_ptr = (int *)block_ptr + 1;
// we don't consume any bytes for the fontset itself,
// since we don't allocate it statically.
block_ptr = FcPatternDistributeBytes (metadata, block_ptr);
// for good measure, write out the object ids used for
// this bank to the file.
return FcObjectDistributeBytes (metadata, block_ptr);
}
FcBool
FcFontSetSerialize (int bank, FcFontSet * s)
{
int i;
FcPattern * p;
*fcfs_pat_count = s->nfont;
for (i = 0; i < s->nfont; i++)
{
p = FcPatternSerialize (bank, s->fonts[i]);
if (!p) return FcFalse;
}
FcObjectSerialize();
return FcTrue;
}
FcBool
FcFontSetUnserialize(FcCache * metadata, FcFontSet * s, void * block_ptr)
{
int nfont;
int i, n;
block_ptr = ALIGN (block_ptr, int);
nfont = *(int *)block_ptr;
block_ptr = (int *)block_ptr + 1;
/* comparing nfont and metadata.count is a bit like comparing
apples and oranges. Its just for rejecting totally insane
nfont values, and for that its good enough */
if (nfont > 0 && nfont < metadata->count / sizeof(void*))
{
FcPattern * p = (FcPattern *)block_ptr;
if (s->sfont < s->nfont + nfont)
{
int sfont = s->nfont + nfont;
FcPattern ** pp;
pp = realloc (s->fonts, sfont * sizeof (FcPattern));
if (!pp)
return FcFalse;
s->fonts = pp;
s->sfont = sfont;
}
n = s->nfont;
s->nfont += nfont;
/* The following line is a bit counterintuitive. The usual
* convention is that FcPatternUnserialize is responsible for
* aligning the FcPattern. However, the FontSet also stores
* the FcPatterns in its own array, so we need to align here
* too. */
p = ALIGN(p, FcPattern);
for (i = 0; i < nfont; i++)
s->fonts[n + i] = p+i;
block_ptr = FcPatternUnserialize (metadata, block_ptr);
block_ptr = FcObjectUnserialize (metadata, block_ptr);
return block_ptr != 0;
}
return FcFalse;
}
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