4.3BSD - /usr/src/new/X/libsun/textutil.c

   1: #ifndef lint
   2: static char *rcsid_textutil_c = "$Header: textutil.c,v 10.2 86/02/01 16:21:27 tony Rel $";
   3: #endif	lint
   4: #ifdef  sun
   5: /*
   6:  * The Sun X drivers are a product of Sun Microsystems, Inc. and are provided
   7:  * for unrestricted use provided that this legend is included on all tape
   8:  * media and as a part of the software program in whole or part.  Users
   9:  * may copy or modify these drivers without charge, but are not authorized
  10:  * to license or distribute them to anyone else except as part of a product or
  11:  * program developed by the user.
  12:  *
  13:  * THE SUN X DRIVERS ARE PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND
  14:  * INCLUDING THE WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A
  15:  * PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE
  16:  * PRACTICE.
  17:  *
  18:  * The Sun X Drivers are provided with no support and without any obligation
  19:  * on the part of Sun Microsystems, Inc. to assist in their use, correction,
  20:  * modification or enhancement.
  21:  *
  22:  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  23:  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY THE SUN X
  24:  * DRIVERS OR ANY PART THEREOF.
  25:  *
  26:  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  27:  * or profits or other special, indirect and consequential damages, even if
  28:  * Sun has been advised of the possibility of such damages.
  29:  *
  30:  * Sun Microsystems, Inc.
  31:  * 2550 Garcia Avenue
  32:  * Mountain View, California  94043
  33:  */
  34: 
  35: #ifndef lint
  36: static char sccsid[] = "@(#)textutil.c 2.1 86/01/28 Copyright 1986 Sun Micro";
  37: #endif
  38: 
  39: /*-
  40:  * Copyright (c) 1986 by Sun Microsystems,  Inc.
  41:  */
  42: 
  43: /* textutil.c	text related utility routines.
  44:  *
  45:  *	CopyText	Copy text to bitmap
  46:  *	TextWidth	Returns width of a piece of text in a font
  47:  *	CharWidth	Returns width of a character in a font
  48:  *
  49:  */
  50: 
  51: /*
  52:  *	ToDo:
  53:  *		Use static pixrects
  54:  */
  55: 
  56: #include "Xsun.h"
  57: 
  58: CopyText (string, strlen, font, bm)
  59:     char *string;
  60:     int strlen;
  61:     FONT *font;
  62:     BITMAP *bm;
  63: {
  64:     struct pixrect *region;
  65:     int         i;
  66:     register struct pixfont *pf = (struct pixfont *) font->data;
  67:     char       *buf = (char *) Xalloc(strlen + 1);
  68: 
  69:     strncpy(buf, string, strlen);   /* XXX - to guarantee
  70: 					 * zero-termination (BARF!) */
  71:     region = mem_point(bm->width, bm->height, 1, (short *) bm->data);   /* XXX - slow!! */
  72: #define CHUNK   80
  73:     for (i = 0; i < strlen; i += CHUNK) {
  74:     register int j;
  75:     struct pr_prpos bat[CHUNK];
  76: 
  77:     for (j = 0; j < CHUNK && i + j < strlen; j++) {
  78:         int         c = string[i + j];
  79:         register struct pixchar *pc = &(pf->pf_char[c]);
  80: 
  81:         bat[j].pr = pc->pc_pr;
  82:         bat[j].pos = pc->pc_adv;
  83:     }
  84:     pr_batchrop(region, 0 - bat[0].pos.x, 0 - bat[0].pos.y, PIX_SRC, bat, j);
  85:     }
  86:     pr_destroy(region);     /* XXX - slow */
  87:     free((caddr_t) buf);
  88: }
  89: 
  90: /* Returns the width of a string in a font */
  91: 
  92: int TextWidth (string, strlen, spacepad, font)
  93:     register char *string;
  94:     register int strlen;
  95:     int spacepad;
  96:     register FONT *font;
  97: {
  98:     register unsigned int c;
  99:     register int width = 0;
 100: 
 101:     if (font->fixed) {
 102:         width = strlen * font->avg_width;
 103:         if (spacepad) {
 104:         while (--strlen >= 0)
 105:             if (*string++ == font->space)
 106:                 width += spacepad;
 107:         }
 108:     } else {
 109:         register struct pixfont *pf = (struct pixfont *)font->data;
 110:         while (--strlen >= 0) {
 111:         c = *string++;
 112:         if (c >= font->first && c <= font->last) {
 113:             if (c == font->space)
 114:                 width += spacepad;
 115:             width += pf->pf_char[c].pc_adv.x;
 116:         }
 117:         }
 118:     }
 119: 
 120:     return (width);
 121: }
 122: 
 123: /* Returns width of a character in a font. */
 124: 
 125: int CharWidth(c, font)
 126:     register unsigned int c;
 127:     register FONT *font;
 128: {
 129: 
 130:     if (c < font->first || c > font->last)
 131:         return (0);
 132:     else if (font->fixed)
 133:         return (font->avg_width);
 134:     else
 135:         return (((struct pixfont *) font->data)->pf_char[c].pc_adv.x);
 136: }
 137: #endif	sun

Defined functions

Defined variables

Defined macros