+++ /dev/null
-/*
- * pcl.c -- printing the "partial" bar encoding in PCL format
- *
- * Copyright (c) 1999 Alessandro Rubini (rubini@gnu.org)
- * Copyright (c) 1999 Prosa Srl. (prosa@prosa.it)
- * Copyright (c) 2001 Andrea Scopece (a.scopece@tin.it)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "barcode.h"
-
-#define SHRINK_AMOUNT 0.15 /* shrink the bars to account for ink spreading */
-
-
-/*
- * How do the "partial" and "textinfo" strings work? See file "ps.c"
- */
-
-
-int Barcode_pcl_print(struct Barcode_Item *bc, FILE *f)
-{
- int i, j, k, barlen;
- double f1, f2, fsav=0;
- int mode = '-'; /* text below bars */
- double scalef=1, xpos, x0, y0, yr;
- unsigned char *ptr;
- unsigned char c;
-
- char font_id[6]; /* default font, should be "scalable" */
- /* 0 Line printer, use on older LJet II, isn't scalable */
- /* 4148 Univers, use on LJet III series, and Lj 4L, 5L */
- /* 16602 Arial, default LJ family 4, 5, 6, Color, Djet */
-
- if (!bc->partial || !bc->textinfo) {
- bc->error = EINVAL;
- return -1;
- }
-
- /*
- * Maybe this first part can be made common to several printing back-ends,
- * we'll see how that works when other ouput engines are added
- */
-
- /* First, calculate barlen */
- barlen = bc->partial[0] - '0';
- for (ptr = bc->partial+1; *ptr; ptr++)
- if (isdigit(*ptr))
- barlen += (*ptr - '0');
- else if (islower(*ptr))
- barlen += (*ptr - 'a'+1);
-
- /* The scale factor depends on bar length */
- if (!bc->scalef) {
- if (!bc->width) bc->width = barlen; /* default */
- scalef = bc->scalef = (double)bc->width / (double)barlen;
- }
-
- /* The width defaults to "just enough" */
- if (!bc->width) bc->width = barlen * scalef +1;
-
- /* But it can be too small, in this case enlarge and center the area */
- if (bc->width < barlen * scalef) {
- int wid = barlen * scalef + 1;
- bc->xoff -= (wid - bc->width)/2 ;
- bc->width = wid;
- /* Can't extend too far on the left */
- if (bc->xoff < 0) {
- bc->width += -bc->xoff;
- bc->xoff = 0;
- }
- }
-
- /* The height defaults to 80 points (rescaled) */
- if (!bc->height) bc->height = 80 * scalef;
-
-#if 0
- /* If too small (5 + text), enlarge and center */
- i = 5 + 10 * ((bc->flags & BARCODE_NO_ASCII)==0);
- if (bc->height < i * scalef ) {
- int hei = i * scalef;
- bc->yoff -= (hei-bc->height)/2;
- bc->height = hei;
- if (bc->yoff < 0) {
- bc->height += -bc->yoff;
- bc->yoff = 0;
- }
- }
-#else
- /* If too small (5 + text), reduce the scale factor and center */
- i = 5 + 10 * ((bc->flags & BARCODE_NO_ASCII)==0);
- if (bc->height < i * scalef ) {
- double scaleg = ((double)bc->height) / i;
- int wid = bc->width * scaleg / scalef;
- bc->xoff += (bc->width - wid)/2;
- bc->width = wid;
- scalef = scaleg;
- }
-#endif
-
- /*
- * deal with PCL output
- */
-
- xpos = bc->margin + (bc->partial[0]-'0') * scalef;
- for (ptr = bc->partial+1, i=1; *ptr; ptr++, i++) {
- /* special cases: '+' and '-' */
- if (*ptr == '+' || *ptr == '-') {
- mode = *ptr; /* don't count it */ i++; continue;
- }
-
- /* j is the width of this bar/space */
- if (isdigit (*ptr)) j = *ptr-'0';
- else j = *ptr-'a'+1;
- if (i%2) { /* bar */
- x0 = bc->xoff + xpos;
- y0 = bc->yoff + bc->margin;
- yr = bc->height;
- if (!(bc->flags & BARCODE_NO_ASCII)) { /* leave space for text */
- if (mode == '-') {
- /* text below bars: 10 points or five points */
- yr -= (isdigit(*ptr) ? 10 : 5) * scalef;
- } else { /* '+' */
- /* text above bars: 10 or 0 from bottom, and 10 from top */
- y0 += (isdigit(*ptr) ? 10 : 0) * scalef;
- yr -= (isdigit(*ptr) ? 20 : 10) * scalef;
- }
- }
-
- fprintf(f,"%c&a%.0fH", 27, x0 * 10.0);
- fprintf(f,"%c&a%.0fV", 27, y0 * 10.0);
- fprintf(f,"%c*c%.0fH", 27, ((j*scalef)-SHRINK_AMOUNT) * 10.0);
- fprintf(f,"%c*c%.0fV", 27, yr * 10.0);
- fprintf(f,"%c*c0P\n", 27);
- }
- xpos += j * scalef;
- }
-
- /* the text */
-
- mode = '-'; /* reinstantiate default */
- if (!(bc->flags & BARCODE_NO_ASCII)) {
- k=0; /* k is the "previous font size" */
- for (ptr = bc->textinfo; ptr; ptr = strchr(ptr, ' ')) {
- while (*ptr == ' ') ptr++;
- if (!*ptr) break;
- if (*ptr == '+' || *ptr == '-') {
- mode = *ptr; continue;
- }
- if (sscanf(ptr, "%lf:%lf:%c", &f1, &f2, &c) != 3) {
- fprintf(stderr, "barcode: impossible data: %s\n", ptr);
- continue;
- }
-
- /* select a Scalable Font */
-
- if (fsav != f2)
- {
- if ((bc->flags & BARCODE_OUT_PCL_III) == BARCODE_OUT_PCL_III)
- { strcpy(font_id, "4148"); /* font Univers */
- }
- else
- { strcpy(font_id, "16602"); /* font Arial */
- }
-
- fprintf(f,"%c(8U%c(s1p%5.2fv0s0b%sT", 27, 27, f2 * scalef, font_id);
- }
- fsav = f2;
-
- fprintf(f,"%c&a%.0fH", 27, (bc->xoff + f1 * scalef + bc->margin) * 10.0);
- fprintf(f,"%c&a%.0fV", 27,
- mode != '-'
- ? ((double)bc->yoff + bc->margin + 8*scalef) * 10.0
- : ((double)bc->yoff + bc->margin + bc->height ) * 10.0);
-
- fprintf(f, "%c", c);
- }
-
- }
-
- return 0;
-}
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