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TeX 1995 July
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TeX CD-ROM July 1995 (Disc 1)(Walnut Creek)(1995).ISO
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dvi2pcl
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downloadchar.c
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C/C++ Source or Header
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1992-11-24
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5KB
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150 lines
/* $Log: downloadchar.c,v $
* Revision 0.8 92/11/23 19:46:43 19:46:43 bt (Bo Thide')
* Fixed resolution bug. Portable downloading. Added/changed options. PJXL color support
*
* Revision 0.7 92/11/13 02:41:27 02:41:27 bt (Bo Thide')
* More bug fixes and improvements. Support for PaintJet XL
*
* Revision 0.6 92/11/10 21:47:43 21:47:43 bt (Bo Thide')
* Bug fixes. Added -R option. Better font handling.
*
* Revision 0.5 92/11/09 16:25:30 16:25:30 bt (Bo Thide')
* Rewrite of dospecial.c. Extended \special support
*
* Revision 0.4 92/11/08 02:45:45 02:45:45 bt (Bo Thide')
* Changed to portable bit manipulations. Replaced strrstr for non-POSIX compliant C. Fixed numerous bugs. Added support for more \special's.
*
* Revision 0.3 92/08/24 12:45:38 12:45:38 bt (Bo Thide')
* Fixed 8 bit (dc font) support.
*
* Revision 0.2 92/08/23 17:28:56 17:28:56 bt (Bo Thide')
* Source cleaned up. Changed certain function calls. Removed globals.
*
* Revision 0.1 92/08/22 23:58:47 23:58:47 bt (Bo Thide')
* First Release.
* */
/*
* Download character 'c', assuming that the corresponding font file is in
* .pk format. Therefore, 'pktopxl(c)' is called which converts the pk-coded
* character into the corresponding byte aligned pixel pattern, stored in
* 'pxlbuffer'. 'pktopxl(c)' also determines the global variables
* c_width, c_height, c_hoffset, c_voffset.
*
* For landscape mode the pixel pattern then will be rotated and stored at
* the end of the character pixel pattern at 'endofchardata' in pxlbuffer.
* The appropriate pixel pattern then is downloaded, i.e is put in bitfile,
* if possible, including the corresponding character descriptor for the
* printer. For those characters which don't fit into the printer's maximum
* character cell (use_count < 0) raster information is stored in *gfont
* and memory space is allocated to store the corresponding pixel pattern.
* Stored characters are drawn in graphics mode by 'drawchar(c)'.
*/
#include <stdio.h>
#include <stdlib.h>
#include "globals.h"
#include "pcl.h"
static char rcsid[] = "$Header: downloadchar.c,v 0.8 92/11/23 19:46:43 bt Exp $";
int downloadchar(bitfile, c, device)
FILE *bitfile;
int c;
short device;
{
int i;
charfmt *u;
int length;
int width_bytes;
int width, height;
byte *p;
pktopxl(c);
/* Determine the char descriptor values */
cd.format = 4;
cd.continuation = 0;
cd.size = 14;
cd.class = 1;
cd.reserved = 0;
if(landscape){
p = (byte *)rotatechar();
width = c_height;
height = c_width;
cd.orientation = '\1';
cd.left_offset = -c_voffset;
cd.top_offset = height - c_hoffset - 1;
}
else{
width = c_width;
height = c_height;
cd.orientation = '\0';
cd.left_offset = -c_hoffset;
cd.top_offset = c_voffset;
p = pxlbuffer;
}
width_bytes = (width + 7) / 8;
length = height*width_bytes;
/* This is for empty characters */
if(!length) {
length = 1;
if(!width)
width=1;
if(!height) {
height = 1;
cd.top_offset = 1;
}
}
u = cbase + c;
cd.char_width = (ushort)width;
cd.char_height = (ushort)height;
cd.delta_x = (short)(4*u->pxl_width); /* In quarterdots! */
if(device == DEV_LJPLUS) {
if(c <= 32)
c += 160;
}
#ifdef DEBUG2
fprintf(stderr,"downloadchar: cd.format = %d\n", cd.format);
fprintf(stderr,"downloadchar: cd.continuation = %d\n", cd.continuation);
fprintf(stderr,"downloadchar: cd.size = %d\n", cd.size);
fprintf(stderr,"downloadchar: cd.class = %d\n", cd.class);
fprintf(stderr,"downloadchar: cd.orientation = %d\n", cd.orientation);
fprintf(stderr,"downloadchar: cd.reserved = %d\n", cd.reserved);
fprintf(stderr,"downloadchar: cd.left_offset = %d\n", cd.left_offset);
fprintf(stderr,"downloadchar: cd.top_offset = %d\n", cd.top_offset);
fprintf(stderr,"downloadchar: cd.char_width = %d\n", cd.char_width);
fprintf(stderr,"downloadchar: cd.char_height = %d\n", cd.char_height);
fprintf(stderr,"downloadchar: cd.delta_x = %d\n", cd.delta_x);
#endif /* DEBUG2 */
/* Send character ID escape sequence to printer */
fprintf(bitfile, PCL4_CHAR_ID, c, length + (int)cd.size + 2);
/*
* Download each char descriptor value individually to avoid
* possible struct alignment problems.
*/
fwrite((void *)&cd.format, sizeof(cd.format), 1, bitfile);
fwrite((void *)&cd.continuation, sizeof(cd.continuation), 1, bitfile);
fwrite((void *)&cd.size, sizeof(cd.size), 1, bitfile);
fwrite((void *)&cd.class, sizeof(cd.class), 1, bitfile);
fwrite((void *)&cd.orientation, sizeof(cd.orientation), 1, bitfile);
fwrite((void *)&cd.reserved, sizeof(cd.reserved), 1, bitfile);
fwrite((void *)&cd.left_offset, sizeof(cd.left_offset), 1, bitfile);
fwrite((void *)&cd.top_offset, sizeof(cd.top_offset), 1, bitfile);
fwrite((void *)&cd.char_width, sizeof(cd.char_width), 1, bitfile);
fwrite((void *)&cd.char_height, sizeof(cd.char_height), 1, bitfile);
fwrite((void *)&cd.delta_x, sizeof(cd.delta_x), 1, bitfile);
/* Now download pixel pattern for c */
for(i = 0 ; i < length ; i++)
putc(*p++, bitfile);
return(height*((width + 7)/8) + (int)cd.size + 2);
}