summaryrefslogtreecommitdiff
path: root/chars.c
blob: 3eef5374b22254e522862e8dcaa947f0eb7fca38 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
/*

Copyright 1990, 1998  The Open Group

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.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.

 * Copyright 1990 Network Computing Devices;
 * Portions Copyright 1987 by Digital Equipment Corporation
 *
 * 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 names of Network Computing Devices, or Digital
 * not be used in advertising or publicity pertaining to distribution
 * of the software without specific, written prior permission.
 *
 * NETWORK COMPUTING DEVICES, AND DIGITAL DISCLAIM ALL WARRANTIES WITH
 * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL NETWORK COMPUTING DEVICES,
 * OR DIGITAL 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.
 */

/* Morten Storgaard Nielsen: chars.c,v 3.2-1 2000/01/30 14:11:19 kat Exp */

#include	<stdio.h>
#include	<X11/Xlib.h>
#include	"fstobdf.h"

#define BIT_ORDER	BitmapFormatBitOrderMSB
#ifdef BYTE_ORDER
#undef BYTE_ORDER
#endif
#define BYTE_ORDER	BitmapFormatByteOrderMSB
#define SCANLINE_UNIT	BitmapFormatScanlineUnit8
#define SCANLINE_PAD	BitmapFormatScanlinePad8
#define EXTENTS		BitmapFormatImageRectMin

#define SCANLINE_PAD_BYTES	1

#define GLWIDTHBYTESPADDED(bits, nBytes)				    \
	((nBytes) == 1 ? (((bits)  +  7) >> 3)		/* pad to 1 byte  */\
	:(nBytes) == 2 ? ((((bits) + 15) >> 3) & ~1)	/* pad to 2 bytes */\
	:(nBytes) == 4 ? ((((bits) + 31) >> 3) & ~3)	/* pad to 4 bytes */\
	:(nBytes) == 8 ? ((((bits) + 63) >> 3) & ~7)	/* pad to 8 bytes */\
	: 0)


static void
EmitBitmap(FILE *outFile,
	   FSXFontInfoHeader *fontHeader,
	   FSXCharInfo *charInfo,
	   unsigned int encoding,
	   int bpr,
	   unsigned char *data)
{
    char       *glyphName;
    unsigned int row;

    /*-
     * format:
     * STARTCHAR name
     * ENCODING index
     * SWIDTH scalablewidth 0
     * DWIDTH pixels 0
     * BBX width height xoff yoff
     * ATTRIBUTES xxxx
     * BITMAP hhhhhhhh ...
     * ENDCHAR
     *
     * where, SWIDTH * (point / 1000) * (yres / 72) = DWIDTH or,
     *        SWIDTH = 72000 *
     * DWIDTH / (point * yres)
     */

    fprintf(outFile, "STARTCHAR ");
    glyphName = XKeysymToString((KeySym) encoding);
    if (glyphName)
	fputs(glyphName, outFile);
    else
	fprintf(outFile, (fontHeader->char_range.min_char.low > 0 ?
			  "C%06o" : "C%03o"), encoding);
    fputc('\n', outFile);
    fprintf(outFile, "ENCODING %u\n", encoding);
    fprintf(outFile, "SWIDTH %ld 0\n",
	    (((long) charInfo->width) * 72000L) /
	    (pointSize * yResolution));
    fprintf(outFile, "DWIDTH %d 0\n", charInfo->width);
    fprintf(outFile, "BBX %d %d %d %d\n",
	    charInfo->right - charInfo->left,
	    charInfo->ascent + charInfo->descent,
	    charInfo->left,
	    -charInfo->descent);
    if (charInfo->attributes)
	fprintf(outFile, "ATTRIBUTES %04x\n", charInfo->attributes);

    /*
     * emit the bitmap
     */
    fprintf(outFile, "BITMAP\n");
    for (row = 0; row < (charInfo->ascent + charInfo->descent); row++) {
	unsigned    byte;
	unsigned    bit;

	static unsigned maskTab[] =
	{
	    (1 << 7), (1 << 6), (1 << 5), (1 << 4),
	    (1 << 3), (1 << 2), (1 << 1), (1 << 0),
	};

	byte = 0;
	for (bit = 0; bit < (charInfo->right - charInfo->left); bit++) {
	    byte |= maskTab[bit & 7] & data[bit >> 3];
	    if ((bit & 7) == 7) {
		fprintf(outFile, "%02x", byte);
		byte = 0;
	    }
	}
	if ((bit & 7) != 0)
	    fprintf(outFile, "%02x", byte);
	fputc('\n', outFile);
	data += bpr;
    }
    fprintf(outFile, "ENDCHAR\n");
}


Bool
EmitCharacters(FILE *outFile,
	       FSServer *fontServer,
	       FSXFontInfoHeader *fontHeader,
	       Font fontID)
{
    FSXCharInfo *extents;
    FSXCharInfo *charInfo;
    unsigned int encoding;
    FSOffset   *offsets;
    unsigned char *glyph;
    unsigned char *glyphs;
    unsigned int nChars;
    unsigned int firstCharLow;
    unsigned int firstCharHigh;
    unsigned int lastCharLow;
    unsigned int lastCharHigh;
    unsigned int chLow;
    unsigned int chHigh;
    FSBitmapFormat format;

    nChars = 0;

    format = BYTE_ORDER | BIT_ORDER | SCANLINE_UNIT |
	SCANLINE_PAD | EXTENTS;
    firstCharLow = fontHeader->char_range.min_char.low;
    firstCharHigh = fontHeader->char_range.min_char.high;
    lastCharLow = fontHeader->char_range.max_char.low;
    lastCharHigh = fontHeader->char_range.max_char.high;

    (void) FSQueryXExtents16(fontServer, fontID, True, (FSChar2b *) 0, 0,
			     &extents);
    (void) FSQueryXBitmaps16(fontServer, fontID, format, True, (FSChar2b *) 0,
			     0, &offsets, &glyphs);

    charInfo = extents;
    /* calculate the actual number of chars */
    for (chHigh = 0; chHigh <= (lastCharHigh-firstCharHigh); chHigh++) {
      for (chLow = 0; chLow <= (lastCharLow-firstCharLow); chLow++) {
	if ((charInfo->width != 0) || (charInfo->left != charInfo->right))
	    nChars++;
	charInfo++;
      }
    }

    fprintf(outFile, "CHARS %u\n", nChars);

    /*
     * actually emit the characters
     */
    charInfo = extents;
    glyph = glyphs;
    for (chHigh = firstCharHigh; chHigh <= lastCharHigh; chHigh++) {
      for (chLow = firstCharLow; chLow <= lastCharLow; chLow++) {
	int         bpr;

	bpr = GLWIDTHBYTESPADDED((charInfo->right - charInfo->left),
				 SCANLINE_PAD_BYTES);
  	  encoding=(chHigh << 8)+chLow;
	if ((charInfo->width != 0) || (charInfo->right != charInfo->left))
	    EmitBitmap(outFile, fontHeader, charInfo, encoding, bpr, glyph);
	glyph = glyphs +
	    offsets[encoding-((firstCharHigh << 8)+firstCharLow) + 1].position;
	charInfo++;
      }
    }
    FSFree((char *) extents);
    FSFree((char *) glyphs);
    FSFree((char *) offsets);
    return (True);
}