1 76193d7c 2003-09-30 devnull #include <u.h>
  2 76193d7c 2003-09-30 devnull #include <libc.h>
  3 76193d7c 2003-09-30 devnull #include <draw.h>
  4 76193d7c 2003-09-30 devnull 
  5 76193d7c 2003-09-30 devnull static int	fontresize(Font*, int, int, int);
  6 76193d7c 2003-09-30 devnull #if 0
  7 76193d7c 2003-09-30 devnull static int	freeup(Font*);
  8 76193d7c 2003-09-30 devnull #endif
  9 76193d7c 2003-09-30 devnull 
 10 76193d7c 2003-09-30 devnull #define	PJW	0	/* use NUL==pjw for invisible characters */
 11 76193d7c 2003-09-30 devnull 
 12 76193d7c 2003-09-30 devnull static Rune empty[] = { 0 };
 13 76193d7c 2003-09-30 devnull int
 14 76193d7c 2003-09-30 devnull cachechars(Font *f, char **ss, Rune **rr, ushort *cp, int max, int *wp, char **subfontname)
 15 76193d7c 2003-09-30 devnull {
 16 76193d7c 2003-09-30 devnull 	int i, th, sh, h, ld, w, rw, wid, nc;
 17 76193d7c 2003-09-30 devnull 	char *sp;
 18 76193d7c 2003-09-30 devnull 	Rune r, *rp, vr;
 19 76193d7c 2003-09-30 devnull 	ulong a;
 20 76193d7c 2003-09-30 devnull 	Cacheinfo *c, *tc, *ec;
 21 76193d7c 2003-09-30 devnull 
 22 76193d7c 2003-09-30 devnull 	if(ss){
 23 76193d7c 2003-09-30 devnull 		sp = *ss;
 24 76193d7c 2003-09-30 devnull 		rp = empty;
 25 76193d7c 2003-09-30 devnull 	}else{
 26 76193d7c 2003-09-30 devnull 		sp = "";
 27 76193d7c 2003-09-30 devnull 		rp = *rr;
 28 76193d7c 2003-09-30 devnull 	}
 29 76193d7c 2003-09-30 devnull 	wid = 0;
 30 76193d7c 2003-09-30 devnull 	*subfontname = 0;
 31 15680d56 2004-03-05 devnull 	for(i=0; i<max && (*sp || *rp); sp+=w, rp+=rw){
 32 76193d7c 2003-09-30 devnull 		if(ss){
 33 76193d7c 2003-09-30 devnull 			r = *(uchar*)sp;
 34 76193d7c 2003-09-30 devnull 			if(r < Runeself)
 35 76193d7c 2003-09-30 devnull 				w = 1;
 36 76193d7c 2003-09-30 devnull 			else{
 37 76193d7c 2003-09-30 devnull 				w = chartorune(&vr, sp);
 38 76193d7c 2003-09-30 devnull 				r = vr;
 39 76193d7c 2003-09-30 devnull 			}
 40 76193d7c 2003-09-30 devnull 			rw = 0;
 41 76193d7c 2003-09-30 devnull 		}else{
 42 76193d7c 2003-09-30 devnull 			r = *rp;
 43 76193d7c 2003-09-30 devnull 			w = 0;
 44 76193d7c 2003-09-30 devnull 			rw = 1;
 45 76193d7c 2003-09-30 devnull 		}
 46 76193d7c 2003-09-30 devnull 
 47 76193d7c 2003-09-30 devnull 		sh = (17 * (uint)r) & (f->ncache-NFLOOK-1);
 48 76193d7c 2003-09-30 devnull 		c = &f->cache[sh];
 49 76193d7c 2003-09-30 devnull 		ec = c+NFLOOK;
 50 76193d7c 2003-09-30 devnull 		h = sh;
 51 76193d7c 2003-09-30 devnull 		while(c < ec){
 52 76193d7c 2003-09-30 devnull 			if(c->value==r && c->age)
 53 76193d7c 2003-09-30 devnull 				goto Found;
 54 76193d7c 2003-09-30 devnull 			c++;
 55 76193d7c 2003-09-30 devnull 			h++;
 56 76193d7c 2003-09-30 devnull 		}
 57 fa325e9b 2020-01-10 cross 
 58 76193d7c 2003-09-30 devnull 		/*
 59 76193d7c 2003-09-30 devnull 		 * Not found; toss out oldest entry
 60 76193d7c 2003-09-30 devnull 		 */
 61 76193d7c 2003-09-30 devnull 		a = ~0;
 62 76193d7c 2003-09-30 devnull 		th = sh;
 63 76193d7c 2003-09-30 devnull 		tc = &f->cache[th];
 64 76193d7c 2003-09-30 devnull 		while(tc < ec){
 65 76193d7c 2003-09-30 devnull 			if(tc->age < a){
 66 76193d7c 2003-09-30 devnull 				a = tc->age;
 67 76193d7c 2003-09-30 devnull 				h = th;
 68 76193d7c 2003-09-30 devnull 				c = tc;
 69 76193d7c 2003-09-30 devnull 			}
 70 76193d7c 2003-09-30 devnull 			tc++;
 71 76193d7c 2003-09-30 devnull 			th++;
 72 76193d7c 2003-09-30 devnull 		}
 73 76193d7c 2003-09-30 devnull 
 74 76193d7c 2003-09-30 devnull 		if(a && (f->age-a)<500){	/* kicking out too recent; resize */
 75 76193d7c 2003-09-30 devnull 			nc = 2*(f->ncache-NFLOOK) + NFLOOK;
 76 76193d7c 2003-09-30 devnull 			if(nc <= MAXFCACHE){
 77 76193d7c 2003-09-30 devnull 				if(i == 0)
 78 76193d7c 2003-09-30 devnull 					fontresize(f, f->width, nc, f->maxdepth);
 79 76193d7c 2003-09-30 devnull 				/* else flush first; retry will resize */
 80 76193d7c 2003-09-30 devnull 				break;
 81 76193d7c 2003-09-30 devnull 			}
 82 76193d7c 2003-09-30 devnull 		}
 83 76193d7c 2003-09-30 devnull 
 84 76193d7c 2003-09-30 devnull 		if(c->age == f->age)	/* flush pending string output */
 85 76193d7c 2003-09-30 devnull 			break;
 86 76193d7c 2003-09-30 devnull 
 87 76193d7c 2003-09-30 devnull 		ld = loadchar(f, r, c, h, i, subfontname);
 88 76193d7c 2003-09-30 devnull 		if(ld <= 0){
 89 76193d7c 2003-09-30 devnull 			if(ld == 0)
 90 76193d7c 2003-09-30 devnull 				continue;
 91 76193d7c 2003-09-30 devnull 			break;
 92 76193d7c 2003-09-30 devnull 		}
 93 76193d7c 2003-09-30 devnull 		c = &f->cache[h];	/* may have reallocated f->cache */
 94 fa325e9b 2020-01-10 cross 
 95 76193d7c 2003-09-30 devnull 	    Found:
 96 76193d7c 2003-09-30 devnull 		wid += c->width;
 97 76193d7c 2003-09-30 devnull 		c->age = f->age;
 98 76193d7c 2003-09-30 devnull 		cp[i] = h;
 99 76193d7c 2003-09-30 devnull 		i++;
100 76193d7c 2003-09-30 devnull 	}
101 76193d7c 2003-09-30 devnull 	if(ss)
102 76193d7c 2003-09-30 devnull 		*ss = sp;
103 76193d7c 2003-09-30 devnull 	else
104 76193d7c 2003-09-30 devnull 		*rr = rp;
105 76193d7c 2003-09-30 devnull 	*wp = wid;
106 76193d7c 2003-09-30 devnull 	return i;
107 76193d7c 2003-09-30 devnull }
108 76193d7c 2003-09-30 devnull 
109 76193d7c 2003-09-30 devnull void
110 76193d7c 2003-09-30 devnull agefont(Font *f)
111 76193d7c 2003-09-30 devnull {
112 76193d7c 2003-09-30 devnull 	Cacheinfo *c, *ec;
113 76193d7c 2003-09-30 devnull 	Cachesubf *s, *es;
114 76193d7c 2003-09-30 devnull 
115 76193d7c 2003-09-30 devnull 	f->age++;
116 76193d7c 2003-09-30 devnull 	if(f->age == 65536){
117 76193d7c 2003-09-30 devnull 		/*
118 76193d7c 2003-09-30 devnull 		 * Renormalize ages
119 76193d7c 2003-09-30 devnull 		 */
120 76193d7c 2003-09-30 devnull 		c = f->cache;
121 76193d7c 2003-09-30 devnull 		ec = c+f->ncache;
122 76193d7c 2003-09-30 devnull 		while(c < ec){
123 76193d7c 2003-09-30 devnull 			if(c->age){
124 76193d7c 2003-09-30 devnull 				c->age >>= 2;
125 76193d7c 2003-09-30 devnull 				c->age++;
126 76193d7c 2003-09-30 devnull 			}
127 76193d7c 2003-09-30 devnull 			c++;
128 76193d7c 2003-09-30 devnull 		}
129 76193d7c 2003-09-30 devnull 		s = f->subf;
130 76193d7c 2003-09-30 devnull 		es = s+f->nsubf;
131 76193d7c 2003-09-30 devnull 		while(s < es){
132 76193d7c 2003-09-30 devnull 			if(s->age){
133 76193d7c 2003-09-30 devnull 				if(s->age<SUBFAGE && s->cf->name != nil){
134 76193d7c 2003-09-30 devnull 					/* clean up */
135 16d00819 2018-11-16 rsc 					freesubfont(s->f);
136 76193d7c 2003-09-30 devnull 					s->cf = nil;
137 76193d7c 2003-09-30 devnull 					s->f = nil;
138 76193d7c 2003-09-30 devnull 					s->age = 0;
139 76193d7c 2003-09-30 devnull 				}else{
140 76193d7c 2003-09-30 devnull 					s->age >>= 2;
141 76193d7c 2003-09-30 devnull 					s->age++;
142 76193d7c 2003-09-30 devnull 				}
143 76193d7c 2003-09-30 devnull 			}
144 76193d7c 2003-09-30 devnull 			s++;
145 76193d7c 2003-09-30 devnull 		}
146 76193d7c 2003-09-30 devnull 		f->age = (65536>>2) + 1;
147 76193d7c 2003-09-30 devnull 	}
148 76193d7c 2003-09-30 devnull }
149 76193d7c 2003-09-30 devnull 
150 76193d7c 2003-09-30 devnull static Subfont*
151 76193d7c 2003-09-30 devnull cf2subfont(Cachefont *cf, Font *f)
152 76193d7c 2003-09-30 devnull {
153 76193d7c 2003-09-30 devnull 	int depth;
154 76193d7c 2003-09-30 devnull 	char *name;
155 76193d7c 2003-09-30 devnull 	Subfont *sf;
156 76193d7c 2003-09-30 devnull 
157 76193d7c 2003-09-30 devnull 	name = cf->subfontname;
158 76193d7c 2003-09-30 devnull 	if(name == nil){
159 76193d7c 2003-09-30 devnull 		depth = 0;
160 76193d7c 2003-09-30 devnull 		if(f->display){
161 76193d7c 2003-09-30 devnull 			if(f->display->screenimage)
162 76193d7c 2003-09-30 devnull 				depth = f->display->screenimage->depth;
163 4e206880 2004-04-25 devnull 		}else
164 4e206880 2004-04-25 devnull 			depth = 8;
165 76193d7c 2003-09-30 devnull 		name = subfontname(cf->name, f->name, depth);
166 76193d7c 2003-09-30 devnull 		if(name == nil)
167 76193d7c 2003-09-30 devnull 			return nil;
168 76193d7c 2003-09-30 devnull 		cf->subfontname = name;
169 76193d7c 2003-09-30 devnull 	}
170 76193d7c 2003-09-30 devnull 	sf = lookupsubfont(f->display, name);
171 76193d7c 2003-09-30 devnull 	return sf;
172 76193d7c 2003-09-30 devnull }
173 76193d7c 2003-09-30 devnull 
174 76193d7c 2003-09-30 devnull /* return 1 if load succeeded, 0 if failed, -1 if must retry */
175 76193d7c 2003-09-30 devnull int
176 76193d7c 2003-09-30 devnull loadchar(Font *f, Rune r, Cacheinfo *c, int h, int noflush, char **subfontname)
177 76193d7c 2003-09-30 devnull {
178 76193d7c 2003-09-30 devnull 	int i, oi, wid, top, bottom;
179 d4aef6a0 2005-05-12 devnull 	int pic;	/* need >16 bits for adding offset below */
180 76193d7c 2003-09-30 devnull 	Fontchar *fi;
181 76193d7c 2003-09-30 devnull 	Cachefont *cf;
182 76193d7c 2003-09-30 devnull 	Cachesubf *subf, *of;
183 76193d7c 2003-09-30 devnull 	uchar *b;
184 76193d7c 2003-09-30 devnull 
185 76193d7c 2003-09-30 devnull 	pic = r;
186 76193d7c 2003-09-30 devnull     Again:
187 76193d7c 2003-09-30 devnull 	for(i=0; i<f->nsub; i++){
188 76193d7c 2003-09-30 devnull 		cf = f->sub[i];
189 76193d7c 2003-09-30 devnull 		if(cf->min<=pic && pic<=cf->max)
190 76193d7c 2003-09-30 devnull 			goto Found;
191 76193d7c 2003-09-30 devnull 	}
192 76193d7c 2003-09-30 devnull     TryPJW:
193 76193d7c 2003-09-30 devnull 	if(pic != PJW){
194 76193d7c 2003-09-30 devnull 		pic = PJW;
195 76193d7c 2003-09-30 devnull 		goto Again;
196 76193d7c 2003-09-30 devnull 	}
197 76193d7c 2003-09-30 devnull 	return 0;
198 76193d7c 2003-09-30 devnull 
199 76193d7c 2003-09-30 devnull     Found:
200 76193d7c 2003-09-30 devnull 	/*
201 76193d7c 2003-09-30 devnull 	 * Choose exact or oldest
202 76193d7c 2003-09-30 devnull 	 */
203 76193d7c 2003-09-30 devnull 	oi = 0;
204 76193d7c 2003-09-30 devnull 	subf = &f->subf[0];
205 76193d7c 2003-09-30 devnull 	for(i=0; i<f->nsubf; i++){
206 76193d7c 2003-09-30 devnull 		if(cf == subf->cf)
207 76193d7c 2003-09-30 devnull 			goto Found2;
208 76193d7c 2003-09-30 devnull 		if(subf->age < f->subf[oi].age)
209 76193d7c 2003-09-30 devnull 			oi = i;
210 76193d7c 2003-09-30 devnull 		subf++;
211 76193d7c 2003-09-30 devnull 	}
212 76193d7c 2003-09-30 devnull 	subf = &f->subf[oi];
213 76193d7c 2003-09-30 devnull 
214 76193d7c 2003-09-30 devnull 	if(subf->f){
215 76193d7c 2003-09-30 devnull 		if(f->age-subf->age>SUBFAGE || f->nsubf>MAXSUBF){
216 76193d7c 2003-09-30 devnull     Toss:
217 76193d7c 2003-09-30 devnull 			/* ancient data; toss */
218 76193d7c 2003-09-30 devnull 			freesubfont(subf->f);
219 76193d7c 2003-09-30 devnull 			subf->cf = nil;
220 76193d7c 2003-09-30 devnull 			subf->f = nil;
221 76193d7c 2003-09-30 devnull 			subf->age = 0;
222 76193d7c 2003-09-30 devnull 		}else{				/* too recent; grow instead */
223 76193d7c 2003-09-30 devnull 			of = f->subf;
224 94b38bdb 2017-04-08 gsoares 			f->subf = realloc(of, (f->nsubf+DSUBF)*sizeof *subf);
225 76193d7c 2003-09-30 devnull 			if(f->subf == nil){
226 76193d7c 2003-09-30 devnull 				f->subf = of;
227 76193d7c 2003-09-30 devnull 				goto Toss;
228 76193d7c 2003-09-30 devnull 			}
229 76193d7c 2003-09-30 devnull 			memset(f->subf+f->nsubf, 0, DSUBF*sizeof *subf);
230 76193d7c 2003-09-30 devnull 			subf = &f->subf[f->nsubf];
231 76193d7c 2003-09-30 devnull 			f->nsubf += DSUBF;
232 76193d7c 2003-09-30 devnull 		}
233 76193d7c 2003-09-30 devnull 	}
234 76193d7c 2003-09-30 devnull 	subf->age = 0;
235 76193d7c 2003-09-30 devnull 	subf->cf = nil;
236 76193d7c 2003-09-30 devnull 	subf->f = cf2subfont(cf, f);
237 76193d7c 2003-09-30 devnull 	if(subf->f == nil){
238 76193d7c 2003-09-30 devnull 		if(cf->subfontname == nil)
239 76193d7c 2003-09-30 devnull 			goto TryPJW;
240 76193d7c 2003-09-30 devnull 		*subfontname = cf->subfontname;
241 76193d7c 2003-09-30 devnull 		return -1;
242 76193d7c 2003-09-30 devnull 	}
243 76193d7c 2003-09-30 devnull 
244 76193d7c 2003-09-30 devnull 	subf->cf = cf;
245 4e206880 2004-04-25 devnull 	if(subf->f->ascent > f->ascent && f->display){
246 76193d7c 2003-09-30 devnull 		/* should print something? this is a mistake in the font file */
247 76193d7c 2003-09-30 devnull 		/* must prevent c->top from going negative when loading cache */
248 76193d7c 2003-09-30 devnull 		Image *b;
249 76193d7c 2003-09-30 devnull 		int d, t;
250 76193d7c 2003-09-30 devnull 		d = subf->f->ascent - f->ascent;
251 76193d7c 2003-09-30 devnull 		b = subf->f->bits;
252 76193d7c 2003-09-30 devnull 		draw(b, b->r, b, nil, addpt(b->r.min, Pt(0, d)));
253 76193d7c 2003-09-30 devnull 		draw(b, Rect(b->r.min.x, b->r.max.y-d, b->r.max.x, b->r.max.y), f->display->black, nil, b->r.min);
254 76193d7c 2003-09-30 devnull 		for(i=0; i<subf->f->n; i++){
255 76193d7c 2003-09-30 devnull 			t = subf->f->info[i].top-d;
256 76193d7c 2003-09-30 devnull 			if(t < 0)
257 76193d7c 2003-09-30 devnull 				t = 0;
258 76193d7c 2003-09-30 devnull 			subf->f->info[i].top = t;
259 76193d7c 2003-09-30 devnull 			t = subf->f->info[i].bottom-d;
260 76193d7c 2003-09-30 devnull 			if(t < 0)
261 76193d7c 2003-09-30 devnull 				t = 0;
262 76193d7c 2003-09-30 devnull 			subf->f->info[i].bottom = t;
263 76193d7c 2003-09-30 devnull 		}
264 76193d7c 2003-09-30 devnull 		subf->f->ascent = f->ascent;
265 76193d7c 2003-09-30 devnull 	}
266 76193d7c 2003-09-30 devnull 
267 76193d7c 2003-09-30 devnull     Found2:
268 76193d7c 2003-09-30 devnull 	subf->age = f->age;
269 76193d7c 2003-09-30 devnull 
270 d4aef6a0 2005-05-12 devnull 	/* possible overflow here, but works out okay */
271 76193d7c 2003-09-30 devnull 	pic += cf->offset;
272 d4aef6a0 2005-05-12 devnull 	pic -= cf->min;
273 d4aef6a0 2005-05-12 devnull 	if(pic >= subf->f->n)
274 76193d7c 2003-09-30 devnull 		goto TryPJW;
275 d4aef6a0 2005-05-12 devnull 	fi = &subf->f->info[pic];
276 76193d7c 2003-09-30 devnull 	if(fi->width == 0)
277 76193d7c 2003-09-30 devnull 		goto TryPJW;
278 76193d7c 2003-09-30 devnull 	wid = (fi+1)->x - fi->x;
279 76193d7c 2003-09-30 devnull 	if(f->width < wid || f->width == 0 || f->maxdepth < subf->f->bits->depth){
280 76193d7c 2003-09-30 devnull 		/*
281 76193d7c 2003-09-30 devnull 		 * Flush, free, reload (easier than reformatting f->b)
282 76193d7c 2003-09-30 devnull 		 */
283 76193d7c 2003-09-30 devnull 		if(noflush)
284 76193d7c 2003-09-30 devnull 			return -1;
285 76193d7c 2003-09-30 devnull 		if(f->width < wid)
286 76193d7c 2003-09-30 devnull 			f->width = wid;
287 76193d7c 2003-09-30 devnull 		if(f->maxdepth < subf->f->bits->depth)
288 76193d7c 2003-09-30 devnull 			f->maxdepth = subf->f->bits->depth;
289 76193d7c 2003-09-30 devnull 		i = fontresize(f, f->width, f->ncache, f->maxdepth);
290 76193d7c 2003-09-30 devnull 		if(i <= 0)
291 76193d7c 2003-09-30 devnull 			return i;
292 76193d7c 2003-09-30 devnull 		/* c is still valid as didn't reallocate f->cache */
293 76193d7c 2003-09-30 devnull 	}
294 76193d7c 2003-09-30 devnull 	c->value = r;
295 76193d7c 2003-09-30 devnull 	top = fi->top + (f->ascent-subf->f->ascent);
296 76193d7c 2003-09-30 devnull 	bottom = fi->bottom + (f->ascent-subf->f->ascent);
297 76193d7c 2003-09-30 devnull 	c->width = fi->width;
298 76193d7c 2003-09-30 devnull 	c->x = h*f->width;
299 76193d7c 2003-09-30 devnull 	c->left = fi->left;
300 4e206880 2004-04-25 devnull 	if(f->display == nil)
301 4e206880 2004-04-25 devnull 		return 1;
302 76193d7c 2003-09-30 devnull 	flushimage(f->display, 0);	/* flush any pending errors */
303 76193d7c 2003-09-30 devnull 	b = bufimage(f->display, 37);
304 76193d7c 2003-09-30 devnull 	if(b == 0)
305 76193d7c 2003-09-30 devnull 		return 0;
306 76193d7c 2003-09-30 devnull 	b[0] = 'l';
307 76193d7c 2003-09-30 devnull 	BPLONG(b+1, f->cacheimage->id);
308 76193d7c 2003-09-30 devnull 	BPLONG(b+5, subf->f->bits->id);
309 76193d7c 2003-09-30 devnull 	BPSHORT(b+9, c-f->cache);
310 76193d7c 2003-09-30 devnull 	BPLONG(b+11, c->x);
311 76193d7c 2003-09-30 devnull 	BPLONG(b+15, top);
312 76193d7c 2003-09-30 devnull 	BPLONG(b+19, c->x+((fi+1)->x-fi->x));
313 76193d7c 2003-09-30 devnull 	BPLONG(b+23, bottom);
314 76193d7c 2003-09-30 devnull 	BPLONG(b+27, fi->x);
315 76193d7c 2003-09-30 devnull 	BPLONG(b+31, fi->top);
316 76193d7c 2003-09-30 devnull 	b[35] = fi->left;
317 76193d7c 2003-09-30 devnull 	b[36] = fi->width;
318 76193d7c 2003-09-30 devnull 	return 1;
319 76193d7c 2003-09-30 devnull }
320 76193d7c 2003-09-30 devnull 
321 76193d7c 2003-09-30 devnull /* release all subfonts, return number freed */
322 76193d7c 2003-09-30 devnull #if 0
323 76193d7c 2003-09-30 devnull static
324 76193d7c 2003-09-30 devnull int
325 76193d7c 2003-09-30 devnull freeup(Font *f)
326 76193d7c 2003-09-30 devnull {
327 76193d7c 2003-09-30 devnull 	Cachesubf *s, *es;
328 76193d7c 2003-09-30 devnull 	int nf;
329 76193d7c 2003-09-30 devnull 
330 76193d7c 2003-09-30 devnull 	if(f->sub[0]->name == nil)	/* font from mkfont; don't free */
331 76193d7c 2003-09-30 devnull 		return 0;
332 76193d7c 2003-09-30 devnull 	s = f->subf;
333 76193d7c 2003-09-30 devnull 	es = s+f->nsubf;
334 76193d7c 2003-09-30 devnull 	nf = 0;
335 76193d7c 2003-09-30 devnull 	while(s < es){
336 76193d7c 2003-09-30 devnull 		if(s->age){
337 76193d7c 2003-09-30 devnull 			freesubfont(s->f);
338 76193d7c 2003-09-30 devnull 			s->cf = nil;
339 76193d7c 2003-09-30 devnull 			s->f = nil;
340 76193d7c 2003-09-30 devnull 			s->age = 0;
341 76193d7c 2003-09-30 devnull 			nf++;
342 76193d7c 2003-09-30 devnull 		}
343 76193d7c 2003-09-30 devnull 		s++;
344 76193d7c 2003-09-30 devnull 	}
345 76193d7c 2003-09-30 devnull 	return nf;
346 76193d7c 2003-09-30 devnull }
347 76193d7c 2003-09-30 devnull #endif
348 76193d7c 2003-09-30 devnull 
349 76193d7c 2003-09-30 devnull /* return whether resize succeeded && f->cache is unchanged */
350 76193d7c 2003-09-30 devnull static int
351 76193d7c 2003-09-30 devnull fontresize(Font *f, int wid, int ncache, int depth)
352 76193d7c 2003-09-30 devnull {
353 76193d7c 2003-09-30 devnull 	Cacheinfo *i;
354 76193d7c 2003-09-30 devnull 	int ret;
355 76193d7c 2003-09-30 devnull 	Image *new;
356 76193d7c 2003-09-30 devnull 	uchar *b;
357 76193d7c 2003-09-30 devnull 	Display *d;
358 76193d7c 2003-09-30 devnull 
359 76193d7c 2003-09-30 devnull 	ret = 0;
360 76193d7c 2003-09-30 devnull 	if(depth <= 0)
361 76193d7c 2003-09-30 devnull 		depth = 1;
362 76193d7c 2003-09-30 devnull 
363 4e206880 2004-04-25 devnull 	d = f->display;
364 4e206880 2004-04-25 devnull 	if(d == nil)
365 4e206880 2004-04-25 devnull 		goto Nodisplay;
366 4e206880 2004-04-25 devnull 
367 76193d7c 2003-09-30 devnull 	new = allocimage(d, Rect(0, 0, ncache*wid, f->height), CHAN1(CGrey, depth), 0, 0);
368 76193d7c 2003-09-30 devnull 	if(new == nil){
369 76193d7c 2003-09-30 devnull 		fprint(2, "font cache resize failed: %r\n");
370 76193d7c 2003-09-30 devnull 		abort();
371 76193d7c 2003-09-30 devnull 		goto Return;
372 76193d7c 2003-09-30 devnull 	}
373 76193d7c 2003-09-30 devnull 	flushimage(d, 0);	/* flush any pending errors */
374 76193d7c 2003-09-30 devnull 	b = bufimage(d, 1+4+4+1);
375 76193d7c 2003-09-30 devnull 	if(b == 0){
376 76193d7c 2003-09-30 devnull 		freeimage(new);
377 76193d7c 2003-09-30 devnull 		goto Return;
378 76193d7c 2003-09-30 devnull 	}
379 76193d7c 2003-09-30 devnull 	b[0] = 'i';
380 76193d7c 2003-09-30 devnull 	BPLONG(b+1, new->id);
381 76193d7c 2003-09-30 devnull 	BPLONG(b+5, ncache);
382 76193d7c 2003-09-30 devnull 	b[9] = f->ascent;
383 76193d7c 2003-09-30 devnull 	if(flushimage(d, 0) < 0){
384 76193d7c 2003-09-30 devnull 		fprint(2, "resize: init failed: %r\n");
385 76193d7c 2003-09-30 devnull 		freeimage(new);
386 76193d7c 2003-09-30 devnull 		goto Return;
387 76193d7c 2003-09-30 devnull 	}
388 76193d7c 2003-09-30 devnull 	freeimage(f->cacheimage);
389 76193d7c 2003-09-30 devnull 	f->cacheimage = new;
390 4e206880 2004-04-25 devnull     Nodisplay:
391 76193d7c 2003-09-30 devnull 	f->width = wid;
392 76193d7c 2003-09-30 devnull 	f->maxdepth = depth;
393 76193d7c 2003-09-30 devnull 	ret = 1;
394 76193d7c 2003-09-30 devnull 	if(f->ncache != ncache){
395 76193d7c 2003-09-30 devnull 		i = malloc(ncache*sizeof f->cache[0]);
396 76193d7c 2003-09-30 devnull 		if(i != nil){
397 76193d7c 2003-09-30 devnull 			ret = 0;
398 76193d7c 2003-09-30 devnull 			free(f->cache);
399 76193d7c 2003-09-30 devnull 			f->ncache = ncache;
400 76193d7c 2003-09-30 devnull 			f->cache = i;
401 76193d7c 2003-09-30 devnull 		}
402 76193d7c 2003-09-30 devnull 		/* else just wipe the cache clean and things will be ok */
403 76193d7c 2003-09-30 devnull 	}
404 76193d7c 2003-09-30 devnull     Return:
405 76193d7c 2003-09-30 devnull 	memset(f->cache, 0, f->ncache*sizeof f->cache[0]);
406 76193d7c 2003-09-30 devnull 	return ret;
407 76193d7c 2003-09-30 devnull }