![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to font.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [CSRG BSD Unix] / 43BSD / contrib / X / libsun|
Return to font.c CVS log | Up to [CSRG BSD Unix] / 43BSD / contrib / X / libsun |
1.1 root 1: #ifdef sun
2: /*
3: * The Sun X drivers are a product of Sun Microsystems, Inc. and are provided
4: * for unrestricted use provided that this legend is included on all tape
5: * media and as a part of the software program in whole or part. Users
6: * may copy or modify these drivers without charge, but are not authorized
7: * to license or distribute them to anyone else except as part of a product or
8: * program developed by the user.
9: *
10: * THE SUN X DRIVERS ARE PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND
11: * INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A
12: * PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE
13: * PRACTICE.
14: *
15: * The Sun X Drivers are provided with no support and without any obligation
16: * on the part of Sun Microsystems, Inc. to assist in their use, correction,
17: * modification or enhancement.
18: *
19: * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
20: * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THE SUN X
21: * DRIVERS OR ANY PART THEREOF.
22: *
23: * In no event will Sun Microsystems, Inc. be liable for any lost revenue
24: * or profits or other special, indirect and consequential damages, even if
25: * Sun has been advised of the possibility of such damages.
26: *
27: * Sun Microsystems, Inc.
28: * 2550 Garcia Avenue
29: * Mountain View, California 94043
30: */
31:
32: #ifndef lint
33: static char sccsid[] = "@(#)font.c 2.1 86/01/28 Copyright 1986 Sun Micro";
34: #endif
35:
36: /*-
37: * Copyright 1985, Massachusetts Institute of Technology
38: * Copyright (c) 1986 by Sun Microsystems, Inc.
39: */
40:
41: /* font.c Reads a font from a file and stores it on the workstation
42: *
43: * GetFont Takes a font name and stores it
44: * FreeFont Frees the storage taken by a font
45: *
46: */
47:
48: /*
49: * ToDo:
50: * Use Sun fonts too
51: */
52:
53: #include "Xsun.h"
54: #include "vssite.h"
55: #include "../libvs100/param.h"
56: #include <errno.h>
57:
58: extern int errno;
59:
60: char *Xalloc(), *strcpy(), *strcat();
61: long lseek();
62:
63: #define CHARPERFONT 256
64:
65: static short ReverseBitsInByte[256] = {
66: 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
67: 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
68: 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
69: 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
70: 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
71: 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
72: 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
73: 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
74: 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
75: 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
76: 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
77: 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
78: 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
79: 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
80: 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
81: 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff,
82: };
83:
84: #define ReverseBitsInShort(s) ((ReverseBitsInByte[(unsigned char)(s)]<<8)|ReverseBitsInByte[(unsigned char)((s)>>8)])
85:
86: /*
87: * this routine converts strike format into Sun font format
88: * XXX - it's embarrasingly slow, but I'm in too much of a hurry
89: * to do anything better for now. The font stuff is for the deep
90: * six anyway..... (DSHR).
91: */
92: struct pixfont *
93: striketopixfont(fn)
94: FONT *fn;
95: {
96: register FontPriv *fp = (FontPriv *)fn->data;
97: register struct pixfont *pf;
98: register int fheight = fn->height;
99: register int i, j;
100:
101: ((struct pixfont *)fn->data) = pf = (struct pixfont *) Xalloc(sizeof(struct pixfont));
102: if (pf != NULL) {
103: extern struct pixrectops mem_ops;
104: static struct mpr_data mprd;
105: static struct pixrect spr = {&mem_ops,2000,1000,1,(caddr_t)&mprd};
106: { register short *sh = (short *) fp->fltable[0];
107: register short limit = (fp->wpitch>>1)*fheight;
108: do *sh = ReverseBitsInShort(*sh), sh++;
109: while (--limit != -1);
110: }
111: mprd.md_linebytes = fp->wpitch;
112: mprd.md_image = (short *) fp->fltable[0];
113: bzero((caddr_t) pf, sizeof(struct pixfont));
114: pf->pf_defaultsize.y = fheight;
115: if (fn->fixed)
116: pf->pf_defaultsize.x = fn->avg_width;
117: for (i = fn->first; i <= fn->last; i++) {
118: register w = fp->widths[i];
119: #ifdef undef
120: register offset = fp->leftarray[i];
121: #endif
122: register struct pixchar *pc = &(pf->pf_char[i]);
123:
124: if (w < 0)
125: continue; /* Sanity check */
126: pc->pc_pr = mem_create(w, fheight, 1);
127: pc->pc_home.x = 0;
128: pc->pc_home.y = fheight - fn->base;
129: pc->pc_adv.x = w;
130: pc->pc_adv.y = 0;
131: pr_rop(pc->pc_pr,0,0,w,fheight,PIX_SRC,
132: &spr, fp->leftarray[i], 0);
133: #ifdef undef
134: for (j = 0; j < fheight; j++) {
135: register int k;
136: for (k = 0; k < w; k++) {
137: int bit;
138:
139: bit = (*((u_short *)fp->fltable[j] + ((offset+k) >> 4)));
140: bit >>= ((offset + k) % 16);
141: bit &= 1;
142: pr_put(pc->pc_pr, k, j, bit);
143:
144: }
145: }
146: #endif
147: }
148: }
149: free((caddr_t) fp);
150: return ((struct pixfont *)fn->data);
151: }
152:
153: FONT *GetFont (name)
154: char *name;
155: {
156: char fontname[256];
157: int fontfile = -1;
158: FontData font;
159: #define chars ((BitMap *) font.f_characters)
160: int fontsize, leftsize, width, i, j;
161: char *fontarea;
162: register short *leftarea, *leftarray;
163: register FONT *fd;
164: register FontPriv *fpriv;
165: int tablesize = (CHARPERFONT + 1) * sizeof(short);
166: extern char *getenv(), *index();
167: static char *Fontpath = NULL;
168: char *fontpath;
169:
170: if (!Fontpath) {
171: char *temp = getenv("XFONTPATH");
172:
173: if (temp) {
174: Fontpath = Xalloc(strlen(temp) + 1);
175: strcpy(Fontpath, temp);
176: }
177: }
178:
179: if ((fontpath = Fontpath) == NULL)
180: fontpath = DEFAULT_FONT_PATH;
181:
182: fontfile = open (name, 0, 0);
183:
184: while (fontfile < 0) {
185: char *fend;
186:
187: if ((fend = index(fontpath, ':')) != 0)
188: *fend = '\0';
189: if (*fontpath == '\0') {
190: errno = EINVAL;
191: return (NULL);
192: }
193:
194: if (*fontpath == '~') {
195: /* XXX - should implement ~foobar as well */
196: strcpy (fontname, getenv("HOME"));
197: strcat (fontname, "/");
198: fontpath++;
199: } else
200: *fontname = '\0';
201: strcat (fontname, fontpath);
202: strcat (fontname, "/");
203: strcat (fontname, name);
204: strcat (fontname, DEFAULT_FONT_SUFFIX);
205:
206: fontfile = open (fontname, 0, 0);
207: if (fend) {
208: *fend = ':';
209: fontpath = ++fend;
210: } else
211: break;
212: }
213:
214: if (read (fontfile, (caddr_t) &font, sizeof (FontData)) != sizeof (FontData)) {
215: close (fontfile);
216: errno = EINVAL;
217: return (NULL);
218: }
219: Swap_shorts((short *) &font, sizeof (FontData)>>1);
220:
221: fontsize = BitmapSize(chars->bm_width, chars->bm_height);
222: fontarea = (char *) Xalloc (fontsize);
223: lseek (fontfile, (long) font.f_characters[0], 0);
224: if (read (fontfile, fontarea, fontsize) != fontsize) {
225: close (fontfile);
226: free (fontarea);
227: errno = EINVAL;
228: return (NULL);
229: }
230: Swap_shorts((short *)fontarea, fontsize>>1);
231:
232: leftarea = (short *) Xalloc (tablesize);
233: bzero(leftarea, tablesize);
234: leftarray = (short *) Xalloc (tablesize);
235: if (font.f_fixedWidth == 0) {
236: leftsize = (font.f_lastChar - font.f_firstChar + 2) * sizeof (short);
237: lseek (fontfile, (long) font.f_leftArray[0], 0);
238: if (read (fontfile, & leftarea[font.f_firstChar], leftsize)
239: != leftsize) {
240: close (fontfile);
241: free (fontarea);
242: free ((caddr_t) leftarea);
243: free ((caddr_t) leftarray);
244: errno = EINVAL;
245: return (NULL);
246: }
247: Swap_shorts(((short *)& leftarea[font.f_firstChar]), leftsize>>1);
248: } else { /* if fixed with font, generate leftarray for use later */
249: j = 0;
250: for (i = font.f_firstChar; i <= font.f_lastChar + 1; i++) {
251: leftarea[i] = j;
252: j += font.f_fixedWidth;
253: }
254: }
255: bcopy(leftarea, leftarray, tablesize);
256:
257: close (fontfile);
258:
259: fd = (FONT *) Xalloc (sizeof (FONT));
260:
261: fd->height = chars->bm_height;
262: fd->first = font.f_firstChar;
263: fd->last = font.f_lastChar;
264:
265: fd->base = font.f_baseline;
266: fd->space = font.f_spaceIndex;
267: fd->space += fd->first;
268: fpriv = (FontPriv *) Xalloc (sizeof (FontPriv));
269: if (fd->avg_width = font.f_fixedWidth) {
270: fd->fixed = 1;
271: fpriv->maxwidth = fd->avg_width;
272: }
273: else
274: fd->fixed = 0;
275:
276: fd->refcnt = 1;
277: fd->data = (caddr_t) fpriv;
278: fpriv->widths = leftarea;
279: fpriv->leftarray = leftarray;
280:
281: if ((fpriv->strike = (BITMAP *) Xalloc(sizeof(BITMAP))) == NULL) {
282: free (fontarea);
283: free ((caddr_t) leftarea);
284: free ((caddr_t) leftarray);
285: free ((caddr_t) fd);
286: free ((caddr_t) fpriv);
287: errno = EINVAL;
288: return (NULL);
289: }
290: fpriv->wpitch = (((chars->bm_width + 15) >> 3) & ~1);
291: fpriv->strike->width = chars->bm_width;
292: fpriv->strike->height = chars->bm_height;
293: fpriv->strike->refcnt = 1;
294: fpriv->strike->data = (caddr_t) fontarea;
295: /*
296: * compute line table for font to eliminate multiply to find beginning
297: * of line.
298: */
299: fpriv->fltable = (char **)Xalloc(chars->bm_height * sizeof(caddr_t));
300: for (i = 0; i < chars->bm_height; i++)
301: fpriv->fltable[i] = ((caddr_t) fontarea) + i * fpriv->wpitch;
302:
303: fd->name = (char *) Xalloc (strlen (name) + 1);
304: strcpy (fd->name, name);
305:
306: fpriv->maxwidth = 0;
307:
308: /* convert the leftarray to the width table */
309: for (i = fd->first; i <= fd->last; i++) {
310: width = fpriv->leftarray[i + 1] - fpriv->leftarray[i];
311: if (width > fpriv->maxwidth) fpriv->maxwidth = width;
312: if (width < 0) {
313: width = 0; /* font sanity check */
314: #ifdef notdef
315: DeviceError ("Bad font leftarray!\n");
316: #else
317: errno = EINVAL;
318: return(NULL);
319: #endif
320: }
321: fpriv->widths[i] = width;
322: }
323:
324: fd->avg_width = ((fpriv->leftarray[fd->last] -
325: fpriv->leftarray[fd->first]) / (fd->last - fd->first));
326:
327: striketopixfont(fd);
328: return (fd);
329: #undef chars
330: }
331:
332: FreeFont (font)
333: register FONT *font;
334: {
335: free ((caddr_t) font->data);
336: free (font->name);
337: free ((caddr_t) font);
338: }
339: #endif sun
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.