bitsource.c revision 7f7f5e4e 
1/* $Xorg: bitsource.c,v 1.4 2001/02/09 02:04:03 xorgcvs Exp $ */
2
3/*
4
5Copyright 1991, 1998  The Open Group
6
7Permission to use, copy, modify, distribute, and sell this software and its
8documentation for any purpose is hereby granted without fee, provided that
9the above copyright notice appear in all copies and that both that
10copyright notice and this permission notice appear in supporting
11documentation.
12
13The above copyright notice and this permission notice shall be included in
14all copies or substantial portions of the Software.
15
16THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
19OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
20AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22
23Except as contained in this notice, the name of The Open Group shall not be
24used in advertising or otherwise to promote the sale, use or other dealings
25in this Software without prior written authorization from The Open Group.
26
27*/
28/* $XFree86: xc/lib/font/fontfile/bitsource.c,v 1.3 2001/01/17 19:43:29 dawes Exp $ */
29
30/*
31 * Author:  Keith Packard, MIT X Consortium
32 */
33
34#ifdef HAVE_CONFIG_H
35#include <config.h>
36#endif
37#include <X11/fonts/fntfilst.h>
38
39BitmapSourcesRec	FontFileBitmapSources;
40
41Bool
42FontFileRegisterBitmapSource (FontPathElementPtr fpe)
43{
44    FontPathElementPtr	*new;
45    int			i;
46    int			newsize;
47
48    for (i = 0; i < FontFileBitmapSources.count; i++)
49	if (FontFileBitmapSources.fpe[i] == fpe)
50	    return TRUE;
51    if (FontFileBitmapSources.count == FontFileBitmapSources.size)
52    {
53	newsize = FontFileBitmapSources.size + 4;
54	new = realloc (FontFileBitmapSources.fpe, newsize * sizeof *new);
55	if (!new)
56	    return FALSE;
57	FontFileBitmapSources.size = newsize;
58	FontFileBitmapSources.fpe = new;
59    }
60    FontFileBitmapSources.fpe[FontFileBitmapSources.count++] = fpe;
61    return TRUE;
62}
63
64void
65FontFileUnregisterBitmapSource (FontPathElementPtr fpe)
66{
67    int	    i;
68
69    for (i = 0; i < FontFileBitmapSources.count; i++)
70	if (FontFileBitmapSources.fpe[i] == fpe)
71	{
72	    FontFileBitmapSources.count--;
73	    if (FontFileBitmapSources.count == 0)
74	    {
75		FontFileBitmapSources.size = 0;
76		free (FontFileBitmapSources.fpe);
77		FontFileBitmapSources.fpe = 0;
78	    }
79	    else
80	    {
81	    	for (; i < FontFileBitmapSources.count; i++)
82		    FontFileBitmapSources.fpe[i] = FontFileBitmapSources.fpe[i+1];
83	    }
84	    break;
85	}
86}
87
88/*
89 * Our set_path_hook: unregister all bitmap sources.
90 * This is necessary because already open fonts will keep their FPEs
91 * allocated, but they may not be on the new font path.
92 * The bitmap sources in the new path will be registered by the init_func.
93 */
94void
95FontFileEmptyBitmapSource(void)
96{
97    if (FontFileBitmapSources.count == 0)
98	return;
99
100    FontFileBitmapSources.count = 0;
101    FontFileBitmapSources.size = 0;
102    free (FontFileBitmapSources.fpe);
103    FontFileBitmapSources.fpe = 0;
104}
105
106int
107FontFileMatchBitmapSource (FontPathElementPtr fpe,
108			   FontPtr *pFont,
109			   int flags,
110			   FontEntryPtr entry,
111			   FontNamePtr zeroPat,
112			   FontScalablePtr vals,
113			   fsBitmapFormat format,
114			   fsBitmapFormatMask fmask,
115			   Bool noSpecificSize)
116{
117    int			source;
118    FontEntryPtr	zero;
119    FontBitmapEntryPtr	bitmap;
120    int			ret;
121    FontDirectoryPtr	dir;
122    FontScaledPtr	scaled;
123
124    /*
125     * Look through all the registered bitmap sources for
126     * the same zero name as ours; entries along that one
127     * can be scaled as desired.
128     */
129    ret = BadFontName;
130    for (source = 0; source < FontFileBitmapSources.count; source++)
131    {
132    	if (FontFileBitmapSources.fpe[source] == fpe)
133	    continue;
134	dir = (FontDirectoryPtr) FontFileBitmapSources.fpe[source]->private;
135	zero = FontFileFindNameInDir (&dir->scalable, zeroPat);
136	if (!zero)
137	    continue;
138    	scaled = FontFileFindScaledInstance (zero, vals, noSpecificSize);
139    	if (scaled)
140    	{
141	    if (scaled->pFont)
142	    {
143		*pFont = scaled->pFont;
144		(*pFont)->fpe = FontFileBitmapSources.fpe[source];
145		ret = Successful;
146	    }
147	    else if (scaled->bitmap)
148	    {
149		entry = scaled->bitmap;
150		bitmap = &entry->u.bitmap;
151		if (bitmap->pFont)
152		{
153		    *pFont = bitmap->pFont;
154		    (*pFont)->fpe = FontFileBitmapSources.fpe[source];
155		    ret = Successful;
156		}
157		else
158		{
159		    ret = FontFileOpenBitmap (
160				FontFileBitmapSources.fpe[source],
161				pFont, flags, entry, format, fmask);
162		    if (ret == Successful && *pFont)
163			(*pFont)->fpe = FontFileBitmapSources.fpe[source];
164		}
165	    }
166	    else /* "cannot" happen */
167	    {
168		ret = BadFontName;
169	    }
170	    break;
171    	}
172    }
173    return ret;
174}
175