raster_text.c revision 1.4 1 1.4 augustss /* $NetBSD: raster_text.c,v 1.4 2000/03/30 12:45:41 augustss Exp $ */
2 1.1 pk
3 1.1 pk /*-
4 1.1 pk * Copyright (c) 1991, 1993
5 1.1 pk * The Regents of the University of California. All rights reserved.
6 1.1 pk *
7 1.1 pk * This code is derived from software contributed to the Computer Systems
8 1.1 pk * Engineering Group at Lawrence Berkeley Laboratory and to the University
9 1.1 pk * of California at Berkeley by Jef Poskanzer.
10 1.1 pk *
11 1.1 pk * Redistribution and use in source and binary forms, with or without
12 1.1 pk * modification, are permitted provided that the following conditions
13 1.1 pk * are met:
14 1.1 pk * 1. Redistributions of source code must retain the above copyright
15 1.1 pk * notice, this list of conditions and the following disclaimer.
16 1.1 pk * 2. Redistributions in binary form must reproduce the above copyright
17 1.1 pk * notice, this list of conditions and the following disclaimer in the
18 1.1 pk * documentation and/or other materials provided with the distribution.
19 1.1 pk * 3. All advertising materials mentioning features or use of this software
20 1.1 pk * must display the following acknowledgement:
21 1.1 pk * This product includes software developed by the University of
22 1.1 pk * California, Berkeley and its contributors.
23 1.1 pk * 4. Neither the name of the University nor the names of its contributors
24 1.1 pk * may be used to endorse or promote products derived from this software
25 1.1 pk * without specific prior written permission.
26 1.1 pk *
27 1.1 pk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 1.1 pk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 1.1 pk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 1.1 pk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 1.1 pk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 1.1 pk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 1.1 pk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 1.1 pk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 1.1 pk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 1.1 pk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 1.1 pk * SUCH DAMAGE.
38 1.1 pk *
39 1.1 pk * @(#)raster_text.c 8.1 (Berkeley) 6/11/93
40 1.1 pk */
41 1.1 pk
42 1.1 pk /*
43 1.1 pk * Text routines for raster library.
44 1.1 pk */
45 1.1 pk
46 1.1 pk #ifdef _KERNEL
47 1.1 pk #include <sys/param.h>
48 1.3 cgd #include <sys/systm.h>
49 1.1 pk #include <dev/rcons/raster.h>
50 1.1 pk #ifdef COLORFONT_CACHE
51 1.1 pk #include <sys/malloc.h>
52 1.1 pk #define NEW(size) malloc(size, M_DEVBUF, M_NOWAIT)
53 1.1 pk #endif
54 1.1 pk #else
55 1.1 pk #include <sys/types.h>
56 1.3 cgd #include <string.h>
57 1.3 cgd #include "raster.h"
58 1.1 pk #ifdef COLORFONT_CACHE
59 1.1 pk #include <malloc.h>
60 1.1 pk #define NEW(size) malloc(size)
61 1.1 pk #endif
62 1.1 pk #endif
63 1.1 pk
64 1.1 pk /* Draws text. Returns 0 on success, -1 on failure. */
65 1.1 pk int
66 1.1 pk raster_text( r, x, y, rop, rf, text )
67 1.4 augustss struct raster* r;
68 1.1 pk int x, y;
69 1.1 pk int rop;
70 1.1 pk struct raster_font* rf;
71 1.2 pk unsigned char* text;
72 1.1 pk {
73 1.1 pk return raster_textn( r, x, y, rop, rf, text, strlen( text ) );
74 1.1 pk }
75 1.1 pk
76 1.1 pk /* Draws n characters of text. Returns 0 on success, -1 on failure. */
77 1.1 pk int
78 1.1 pk raster_textn( r, x, y, rop, rf, text, n )
79 1.4 augustss struct raster* r;
80 1.1 pk int x, y;
81 1.1 pk int rop;
82 1.1 pk struct raster_font* rf;
83 1.2 pk unsigned char* text;
84 1.1 pk int n;
85 1.1 pk {
86 1.1 pk int clip;
87 1.1 pk int x1, y1;
88 1.1 pk struct raster_char* c;
89 1.1 pk struct raster* charrast;
90 1.1 pk int i;
91 1.4 augustss unsigned char ch;
92 1.1 pk int thisx, thisy;
93 1.1 pk int phase;
94 1.1 pk
95 1.1 pk /* Check whether we can avoid clipping. */
96 1.1 pk clip = 0;
97 1.1 pk if ( rf->flags & RASFONT_FIXEDWIDTH &&
98 1.1 pk rf->flags & RASFONT_NOVERTICALMOVEMENT )
99 1.1 pk {
100 1.1 pk /* This font is well-behaved, we can compute the extent cheaply. */
101 1.1 pk c = &(rf->chars['@']);
102 1.1 pk charrast = c->r;
103 1.1 pk if ( x + c->homex < 0 || y + c->homey < 0 ||
104 1.1 pk x + c->homex + n * c->nextx > r->width ||
105 1.1 pk y + c->homey + charrast->height > r->height )
106 1.1 pk clip = 1;
107 1.1 pk }
108 1.1 pk else
109 1.1 pk {
110 1.1 pk /* Got to step through the string to compute the extent. */
111 1.1 pk for ( i = 0, x1 = x, y1 = y;
112 1.1 pk i < n;
113 1.1 pk ++i, x1 += c->nextx, y1 += c->nexty )
114 1.1 pk {
115 1.1 pk c = &(rf->chars[text[i]]);
116 1.1 pk charrast = c->r;
117 1.1 pk if ( charrast != (struct raster*) 0 )
118 1.1 pk {
119 1.1 pk if ( x1 + c->homex < 0 || y1 + c->homey < 0 ||
120 1.1 pk x1 + c->homex + charrast->width > r->width ||
121 1.1 pk y1 + c->homey + charrast->height > r->height )
122 1.1 pk {
123 1.1 pk clip = 1;
124 1.1 pk break;
125 1.1 pk }
126 1.1 pk }
127 1.1 pk }
128 1.1 pk }
129 1.1 pk
130 1.1 pk /* Now display the text. */
131 1.1 pk for ( i = 0, x1 = x, y1 = y;
132 1.1 pk i < n;
133 1.1 pk ++i, x1 += c->nextx, y1 += c->nexty )
134 1.1 pk {
135 1.1 pk ch = text[i];
136 1.1 pk c = &(rf->chars[ch]);
137 1.1 pk charrast = c->r;
138 1.1 pk if ( charrast != (struct raster*) 0 )
139 1.1 pk {
140 1.1 pk thisx = x1 + c->homex;
141 1.1 pk thisy = y1 + c->homey;
142 1.1 pk
143 1.1 pk phase = 0;
144 1.1 pk #ifdef COLORFONT_CACHE
145 1.1 pk if ( r->depth == 8 )
146 1.1 pk {
147 1.1 pk /* Initialize color font cache if necessary. */
148 1.1 pk if ( rf->cache == (struct raster_fontcache*) -1 )
149 1.1 pk {
150 1.1 pk int c;
151 1.1 pk
152 1.1 pk rf->cache = (struct raster_fontcache*)
153 1.1 pk NEW( sizeof(struct raster_fontcache) );
154 1.1 pk if ( rf->cache != (struct raster_fontcache*) 0 )
155 1.1 pk for ( c = 0; c < 256; ++c )
156 1.1 pk rf->cache->cr[c] = (struct raster*) 0;
157 1.1 pk }
158 1.1 pk
159 1.1 pk if ( rf->cache != (struct raster_fontcache*) 0 )
160 1.1 pk {
161 1.1 pk int color;
162 1.1 pk struct raster* cr;
163 1.1 pk
164 1.1 pk color = RAS_GETCOLOR( rop );
165 1.1 pk cr = rf->cache->cr[ch];
166 1.1 pk /* Is this character cached yet? */
167 1.1 pk if ( cr != (struct raster*) 0 )
168 1.1 pk {
169 1.1 pk /* Yes, but is it the right color? */
170 1.1 pk if ( rf->cache->color[ch] == color )
171 1.1 pk {
172 1.1 pk /* Yes - switch rasters. */
173 1.1 pk charrast = cr;
174 1.1 pk }
175 1.1 pk else
176 1.1 pk {
177 1.1 pk /* No, re-draw it. */
178 1.1 pk if ( raster_op_noclip(
179 1.1 pk cr, 0, 0, charrast->width,
180 1.1 pk charrast->height, rop, charrast, 0, 0 ) == 0 )
181 1.1 pk {
182 1.1 pk rf->cache->color[ch] = color;
183 1.1 pk charrast = cr;
184 1.1 pk }
185 1.1 pk }
186 1.1 pk }
187 1.1 pk else
188 1.1 pk {
189 1.1 pk /* It's not cached, so cache it. */
190 1.1 pk cr = raster_alloc(
191 1.1 pk charrast->width, charrast->height, 8 );
192 1.1 pk if ( cr != (struct raster*) 0 )
193 1.1 pk if ( raster_op_noclip(
194 1.1 pk cr, 0, 0, charrast->width, charrast->height,
195 1.1 pk rop, charrast, 0, 0 ) == 0 )
196 1.1 pk {
197 1.1 pk rf->cache->color[ch] = color;
198 1.1 pk charrast = rf->cache->cr[ch] = cr;
199 1.1 pk }
200 1.1 pk }
201 1.1 pk }
202 1.1 pk }
203 1.1 pk #endif /*COLORFONT_CACHE*/
204 1.1 pk
205 1.1 pk if ( clip )
206 1.1 pk {
207 1.1 pk if ( raster_op(
208 1.1 pk r, thisx, thisy, charrast->width, charrast->height,
209 1.1 pk rop, charrast, phase, 0 ) < 0 )
210 1.1 pk return -1;
211 1.1 pk }
212 1.1 pk else
213 1.1 pk {
214 1.1 pk if ( raster_op_noclip(
215 1.1 pk r, thisx, thisy, charrast->width, charrast->height,
216 1.1 pk rop, charrast, phase, 0 ) < 0 )
217 1.1 pk return -1;
218 1.1 pk }
219 1.1 pk }
220 1.1 pk }
221 1.1 pk
222 1.1 pk return 0;
223 1.1 pk }
224 1.1 pk
225 1.1 pk #ifdef COLORFONT_CACHE
226 1.1 pk /* Allocates a raster. Returns (struct raster*) 0 on failure. */
227 1.1 pk struct raster*
228 1.1 pk raster_alloc( width, height, depth )
229 1.1 pk int width, height, depth;
230 1.1 pk {
231 1.1 pk struct raster* r;
232 1.1 pk int linelongs;
233 1.1 pk
234 1.1 pk if ( width <= 0 || height <= 0 || ( depth != 1 && depth != 8 ) )
235 1.1 pk return (struct raster*) 0;
236 1.1 pk linelongs = ( ( width * depth + 31 ) >> 5 );
237 1.1 pk r = (struct raster*)
238 1.3 cgd NEW( sizeof(struct raster) + height * linelongs * sizeof(u_int32_t));
239 1.1 pk if ( r == (struct raster*) 0 )
240 1.1 pk return (struct raster*) 0;
241 1.1 pk
242 1.1 pk r->width = width;
243 1.1 pk r->height = height;
244 1.1 pk r->depth = depth;
245 1.1 pk r->linelongs = linelongs;
246 1.3 cgd r->pixels = (u_int32_t*) (r + 1);
247 1.1 pk r->data = (caddr_t) 0;
248 1.1 pk return r;
249 1.1 pk }
250 1.1 pk #endif
251